JP3135810U - Directional control fittings for electric rotary tools - Google Patents

Abstract

An object of the present invention is to provide a lock when a power rotating tool main body is linearly arranged and can be used at a desired angle with respect to a tool of a driver bit attached to the tip of the electric rotating tool. Provided is a directional control joint that can be easily and reliably released, and that improves safety while ensuring safety.
A rod 1 on which an electric rotary tool is installed at a rear portion, a joint body 2 attached to the front portion of the rod 1, and a universal joint ball 5 that is rotatable at the tip of the joint body 2 are provided. It is provided with a connector 4 that can be detachably attached to a tool 6 such as a driver bit or a drill. The direction surface of the rod 5 of the ball 5 of the connector 4 is partly cut away, and the tip head portion 10 of the rod 1 is formed in a rod fitting recess 50 that can be freely fitted. In the locked state in which the head 10 of the rod 1 is fitted, the distal end direction of the connector 4 is locked in a linear arrangement with respect to the rod 1.
[Selection] Figure 1

Description

  The present invention relates to a technical field of a directional control joint used by being attached to an electric rotary tool.

  As a conventional type of joint having a universal joint attached to the tip of the electric rotary tool, for example, a driver bit or the like is attached to the tip of the electric rotary tool. The advantage is that when working at narrow corners, the main part of the electric rotary tool is bulky and obstructive. It is possible to work in the state that was made.

  However, the following problems have been pointed out when using it in a straight line instead of being bent in the middle. That is, if the universal joint portion is bent even slightly during operation, the tip of the driver bit swings, and the screw 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 attached with a hand to stop the shake, and the screw is screwed in. If there are several screws, this process can be repeated.However, if there are several tens of screws, the conventional type joint is removed and the screwdriver bit is directly attached to the electric rotary tool. Workability is better when attached. However, when the driver bit is directly attached to the electric rotary tool in this way, there is naturally a situation where the main body of the electric rotary tool becomes an obstacle, in which case the conventional type joint must be used again. .

  Therefore, as a joint tool for an electric rotary tool that eliminates the necessity of attaching and detaching the universal joint during the screw tightening operation as described above and allows the operation to be continued while being always mounted, for example, There exists a thing as described in Kaihei 8-118247 open patent gazette.

That is, in the publication, a base tube having a connecting portion to which various tools such as a driver bit and a drill are connected at the front end and a universal joint portion at the rear end is provided, and a first concave groove is formed on the outer periphery of the base tube. A second concave groove is further provided at a position in the rear end direction of the base cylinder with respect to the first concave groove, and the first concave groove is formed in an arc shape when viewed from the longitudinal direction of the base cylinder. A fitting cylinder to be fitted to the base cylinder is provided, a through hole is formed in the fitting cylinder, the through hole is closed with an elastic member, and the through hole of the fitting cylinder is formed in the first concave groove of the base cylinder. The fitting cylinder is fitted on the base cylinder so as to match, and a ball partially inserted into the through hole of the fitting cylinder is disposed in the first concave groove, and the fitting cylinder is slid backward with respect to the base cylinder. When moved, the ball moves and is inserted into the second concave groove so that the position of the fitted cylinder relative to the base cylinder is fixed. The joint A rear body having a connecting portion connected to the electric rotating tool at the rear end is provided, and the base tube and the rear body are positioned on the same axis, and the fitted tube is slid backward with respect to the base tube. By moving the rear end of the fitted cylinder into contact with the front end of the universal joint and fixing the fitted cylinder by moving the ball into the second concave groove, the positional relationship between the base cylinder and the rear body is maintained. A joint tool for an electric rotating tool configured as described above is disclosed.
Japanese Patent Application Laid-Open No. 8-118247

  The joint tool described in the above-mentioned published patent publication is provided with a fitting cylinder fitted to the base cylinder as means for maintaining the positional relationship between the front body and the rear body, and the fitting cylinder is fitted in the first concave groove. A ball partially inserted into the through-hole is disposed, and the base tube and the rear body are positioned on the same axis, and the back tube is slid backward with respect to the base tube to receive the back end of the back tube. It is done by abutting the front end of the universal joint and fixing the fitted cylinder by moving the ball into the second concave groove, but the connecting rod and the universal joint remain connected via a spring. In such a structure in which the fitted cylinder is simply slid on the outer periphery of the universal joint and the ball is moved, the locking situation on the same axis of the base cylinder and the rear body is uncertain.

  Therefore, the problem to be solved by the present invention is that the electric rotary tool body can be used at a desired angle with respect to a driver bit or a drill tool attached to the tip of the electric rotary tool. It is an object of the present invention to provide a directional control joint for an electric rotary tool that can easily and reliably lock and release the main body when it is arranged in a straight line, and improve work efficiency while ensuring safety.

  As means for solving the above-mentioned problems, a direction control joint for an electric rotary tool according to claim 1 is a rod 1 in which the electric rotary tool is installed at the rear part, and a joint attached to the front part of the rod 1. A directional control joint comprising a main body 2 and a universal joint ball 5 rotatable at the tip of the joint main body 2 and comprising a connector 4 to which a tool 6 such as a driver bit or a drill is detachable. A portion of the ball 5 in the direction of the rod 1 is partially cut away, and the tip head 10 of the rod 1 is formed in a rod fitting recess 50 that can be freely fitted. In the locked state in which one head 10 is fitted, the distal end direction of the connector 4 is locked in a linear arrangement with respect to the rod 1.

The direction control joint for an electric rotary tool according to the invention of claim 2 is:
a) A rear portion of the joint body 2 is formed in a shaft body 20 on which the rod 1 can slide, a receiving hole 21 for receiving a lock ball 22 is formed in a part of the shaft body 20, and the rod Two types of lock groove portions 12 and locking groove portions 13 are formed on the outer periphery of 1, and the lock balls 22 loaded in the receiving holes 21 can be locked at the positions of the respective groove portions 12 and 13.
b) A cylindrical control cylinder 3 slidably movable on the outer periphery of the shaft body 20 of the joint body 2 is attached, and a receiving recess 30 and a locking projection 31 are formed on the inner surface of the control cylinder 3. The locking ball 22 is sandwiched between the locking groove portion 12 and the locking projection portion 31 or the locking groove portion 13 and the locking projection portion 31 via the receiving recess portion 30, and can be positioned freely.
c) When the lock ball 22 is positioned and fixed between the lock groove 12 and the locking projection 31 of the rod 1, the fitting state in which the head 10 of the rod 1 fits into the rod fitting recess 50 of the ball 5. And the rotational force of the rod 1 is linearly transmitted to the tool 6 at the tip of the connector 4;
d) or when the lock ball 22 is positioned and fixed between the locking groove 13 and the locking projection 31 of the rod 1, the disengaged state between the head 10 of the rod 1 and the rod fitting recess 50 of the ball 5. The ball 5 of the universal joint is rotated, and the rotational force from the rod 1 is transmitted while the tool 6 at the tip of the connector 4 is inclined at a desired angle.

  A direction control joint for an electric rotary tool according to a third aspect of the invention has a ring base 23 attached to the base of the shaft body 20 of the joint body 2 and the front inner periphery of the control cylinder 3 is The ring base 23 is formed to be large enough to slide on the outer periphery, and a spring 24 is loaded on the inside thereof. The spring force of the lock ball 22 positions the lock groove 12 or the locking groove 13. Is fixed.

  In the direction control joint for an electric rotary tool according to the fourth aspect of the invention, the head 10 of the rod 1 is formed at a sharp point such as a cone, and the rod fitting recess 50 of the ball 5 is The rod head 10 is formed in a funnel shape that fits into the sharp part.

  In the direction control joint for an electric rotary tool according to the invention described in claim 5, the front portion of the joint body 2 houses the large space portion 27 in which the ball 5 of the universal joint is housed and the head portion 10 of the rod 1. A locking ring body 11 that is formed in a hollow shape having a small space portion 28 and that prevents the rod head 10 from falling off the joint body 2 is attached to the proximal end of the rod head 10 in the small space portion 28. And

  A direction control joint for an electric rotary tool related to the present invention according to claim 1 includes a rod on which the electric rotary tool is installed at the rear, a joint main body attached to the front of the rod, and a tip of the joint main body. It consists of a universal joint ball that can rotate, and a connector that can be attached and detached with a tool such as a driver bit or drill, and the rod direction surface of the ball of the connector is partly cut away, and the tip head of the rod is fitted. Since it is formed in a free rod fitting recess, when using a rod (electric rotating tool body) in a straight line with a tool such as a driver bit attached to the tip of the connector, the ball rod A locked state in which the head of the rod is securely fitted in the fitting recess is ensured, and the work can be performed safely. It can be easily unlocked, and can be used quickly and reliably with the use of tilting the rod with respect to the end tool, contributing to improved work efficiency.

  The directional control joint for an electric rotary tool according to the present invention according to claim 2, wherein a rear portion of the joint body is formed in a shaft body on which a rod can slide, and a lock ball is received in a part of the shaft body. A hole is formed, and two types of locking groove portions and locking groove portions are formed on the outer periphery of the rod, and lock balls loaded in the receiving holes can be locked at the positions of the groove portions, A cylindrical control cylinder that is slidable on the outer periphery of the shaft body of the joint body is attached, and a receiving recess and a locking projection are formed on the inner surface of the control cylinder. It can be positioned by being sandwiched between the locking groove and the locking projection or between the locking groove and the locking projection via the recess.

  Therefore, when the lock ball is positioned and fixed between the lock groove portion and the locking convex portion of the rod, the fitting state in which the head portion of the rod fits into the rod fitting concave portion of the ball is maintained. The rotational force is reliably transmitted linearly to the tool at the tip of the connector, and there is no problem with the electric rotary tool in a straight state.

  Also, when working at narrow corners, if the electric rotary tool (main body part) connected to the rod is bulky and obstructive, the lock ball is inserted into the locking groove of the rod. Since the disengagement state between the head of the rod and the rod fitting recess of the ball is maintained when the positioning is fixed between the protrusion and the locking protrusion, the main body portion is inclined at a desired angle in the disengagement state, that is, By rotating the ball of the universal joint and tilting the tool at the tip of the connector to a desired angle, the rotational force from the rod is reliably transmitted to the tip tool, and work at narrow corners can be performed easily.

  According to a third aspect of the present invention, there is provided a directional control joint for an electric rotary tool in which a ring base is attached to a base portion of a shaft body of a joint body, and a front inner periphery of the control cylinder is formed on the ring base. Since it is formed in a size sufficient to slide on the outer periphery and a spring is loaded inside it, the spring attaches the control cylinder to the ring body when the lock ball is positioned in the lock groove portion or the locking groove portion. It is firmly fixed, and every effort is made to control the direction of the rod (or tip tool).

  The directional control joint for an electric rotary tool according to the present invention according to claim 4 has a rod head formed in a cone-shaped sharp portion and a rod fitting concave portion of the ball at the sharp portion of the rod head. Since it is formed in a funnel shape that fits, when the tip tool and the rod (electric rotary tool body) are arranged in a straight line, the sharp portion that forms the head of the rod is formed on the ball A locked state in which the funnel is reliably engaged with the funnel-shaped rod fitting recess is ensured, and safety is improved.

  6. The direction control joint for an electric rotary tool according to the present invention according to claim 5, wherein the front portion of the joint body has a hollow portion having a large space portion in which a ball of a universal joint is internally provided and a small space portion in which a rod head portion is internally provided. Since the locking ring body is attached to the base end of the rod head in the small space portion, there is no fear that the rod will fall out of the joint body.

  The direction control joint for an electric rotary tool according to claims 1 to 5 is used as a joint for an electric rotary tool and a tool such as a driver bit or a drill attached to the tip of the electric rotary tool.

  Of course, the electric rotary tool body can be used while being inclined at a desired angle, and is suitable for easily and reliably locking and releasing the electric rotary tool body when the electric rotary tool body is arranged linearly. Hereinafter, an embodiment in which a driver bit is used as a tool will be described with reference to the drawings.

  The internal structure of the direction control joint of this embodiment is shown in FIG.

  This directional control joint basically includes a hexagonal rod 1 in which an electric rotary tool (not shown) is installed at the rear part, a joint body 2 attached to the front part of the rod 1, and the joint body 2. A universal joint ball 5 which is rotatable at the tip is provided, and a tool 6 such as a driver bit is constituted by a connector 4 which is detachable at the most advanced position (see FIG. 2).

  The direction surface of the rod 1 of the ball 5 of the connector 4 is partially cut away.

  That is, the head 10 of the rod 1 is formed at a sharp point such as a cone, and the direction surface of the rod 1 of the ball 5 is a funnel-like shape that fits into the sharp part of the rod head 10. It is formed in the rod fitting recess 50.

  Therefore, when the head portion 10 of the rod 1 is fitted into the rod fitting recess 50 of the ball 5, as shown in FIG. 3, the distal end direction of the connector 4 is relative to the rod 1 of the electric rotary tool. A straight line state is maintained. The lock structure will be described later.

  Next, the joint body 2 will be described.

  The front portion of the joint body 2 is formed in a hollow shape having a large space portion 27 in which the ball 5 of the universal joint is housed and a small space portion 28 in which the head 10 (sharp portion) of the rod 1 is housed. .

  In the ball 5 (universal joint) in the large space portion 27, the support rod 26 is penetrated through a tapered hole portion 51 formed in a tapered shape in the direction perpendicular to the axial direction of the ball 5, and the support rod 26 is connected to the joint. It is connected to the main body 2 and is rotatable within the large space portion 27.

  In the small space portion 28, the head portion 10 (sharp portion) of the rod 1 faces. Further, the ball 5 (rod fitting recess 50) supported in the large space portion 27 is biased by the spring 25 loaded in the large space portion 27.

  In the large space portion 27, an interval is provided between the head portion 10 (sharp portion) of the rod 1 and the rod fitting concave portion 50 of the ball 5 to allow a certain movement of the rod 1 in the axial direction. It has been.

  A locking ring body 11 is attached to the base end of the head 10 of the rod 1 so as to prevent the rod 1 from coming off from the joint body 2. That is, the locking ring body 11 is in contact with the proximal end inner wall portion of the small space portion 28 of the joint body 2, and the rod 1 is prevented from coming off from the joint body 2.

  The rear portion (left side portion in the figure) of the joint body 2 described above is formed in a shaft body 20 in which the rod 1 can slide in the axial direction. A receiving hole 21 for receiving the lock ball 22 is formed in a part of the shaft body 20.

  On the other hand, two types of lock groove portions 12 and locking groove portions 13 are formed on the outer periphery of the rod 1. A lock groove portion 12 is provided on the outer periphery of the rod 1 on the base end (electric rotating tool) side, and a locking groove portion 13 is provided on the outer periphery of the rod 1 on the distal end head portion 10 side. Therefore, the lock ball 22 loaded in the receiving hole 21 can be locked at any position of the groove 12 or 13.

  A cylindrical control cylinder 3 slidably movable on the outer periphery of the coaxial body 20 is attached to the shaft body 20 of the joint body 2.

  A receiving recess 30 and a locking projection 31 are formed on the inner side surface of the control cylinder 3, and the lock ball 22 is received by the receiving recess 30 by the movement of the rod 1 (or the connector 4) in the axial direction. The positioning is performed by being sandwiched between the locking groove 12 and the locking projection 31 or between the locking groove 13 and the locking projection 31.

  A ring base 23 is attached to the base of the joint body 2 near the connector 4 of the shaft body 20, and a ring body 29 slightly larger than the outer diameter of the shaft body 20 is attached to the end of the coaxial body 20 near the power tool. It has been. At the same time, the front inner periphery of the control cylinder 3 is formed to be large enough to slide on the outer periphery of the ring base 23, and a spring 24 is loaded on the inside thereof.

  Therefore, the spring 24 biases the control cylinder 3 toward the electric rotary tool, so that the position of the lock ball 22 is between the lock groove 12 and the locking protrusion 31 or between the locking groove 13 and the locking protrusion. It is held in a form sandwiched between any of the portions 31.

  Thus, FIG. 3 showing a locked state in which the rod (electric rotating tool) is linearly arranged with respect to the tip tool will be described.

  When the lock ball 22 is positioned between the lock groove 12 and the locking projection 31 of the rod 1, the head 10 of the rod 1 is fitted in the rod fitting recess 50 of the ball 5. At this time, the control cylinder 3 is brought into contact with the ring body 29 by the urging of the spring 24 and the immobile state is maintained.

  Therefore, the rotational force of the rod 1 of the electric rotary tool is transmitted to the tip tool 6 of the connector 4 through the ball 5.

  Next, the point of using the rod 1 of the electric rotary tool inclined at a desired angle will be described.

  To move the lock ball 22, the control cylinder 3 is pulled toward the tip tool 6 as shown in FIG. Then, the lock ball 22 sandwiched between the lock groove 12 and the locking projection 31 is relatively loosely fitted into the receiving recess 30.

  Therefore, while maintaining the loose state in which the control cylinder 3 is pulled toward the tip tool 6, the movable rod 1 (or the connector 4) is moved in the axial direction to lock the lock ball 22 into the locking groove 13. And the control cylinder 3 that is sandwiched between the protruding projection 31 and pulled toward the end tool 6 is released.

  Then, as shown in FIG. 5, the control cylinder 3 comes into contact with the ring body 29, and the lock ball 22 positioned between the locking groove 13 and the locking projection 31 is positioned and fixed and locked. In other words, in this state, the state in which the rod head 10 is completely detached from the rod fitting recess 50 of the ball 5 is locked, and the ball 5 is freely rotatable.

  Therefore, as shown in FIG. 6, the rod 1 side or the connector 4 side can be tilted, and the rotational force from the rod 1 side is transmitted to the tip while the tip tool 6 is tilted at a desired angle.

  Moreover, what is necessary is just to operate in the procedure reverse to the above in order to change from the state in which the tip tool 6 shown in FIG. 6 inclines to the straight state shown in FIG.

  That is, after making the tool 6 linear with respect to the rod 1 as shown in FIG. 5, in the loose state where the lock is released while the control cylinder 3 is pulled in the direction of the tool 6 as shown in FIG. After the rod head 10 is fitted into the rod fitting recess 50 of the ball 5, the control cylinder 3 is released. Then, the spring 24 is urged, and the control cylinder 3 automatically comes into contact with the ring body 29 and stops.

  Therefore, as shown in FIG. 3, the linear state is locked, and conversion in which the rotational force from the rod 1 side is linearly transmitted to the tip tool 6 without risk can be easily performed.

It is sectional drawing which showed the direction control coupling for electric rotary tools of this invention.

It is a whole use perspective view of a direction control joint.

It is sectional drawing which showed the linear lock state of the direction control coupling.

It is the partially cutaway sectional view showing the loose state which cancels the lock of a direction control joint.

It is the partially cutaway sectional view showing the rotation lock state of the direction control joint.

It is a partially cutaway sectional view showing a tilt lock state of a direction control joint.

Explanation of symbols

1 Rod 10 head (sharp part)
DESCRIPTION OF SYMBOLS 11 Locking ring body 12 Locking groove part 13 Locking groove part 2 Joint main body 20 Shaft body 21 Receiving hole 22 Locking ball 23 Ring base body 24 Spring 27 Large space part 28 Small space part 3 Control cylinder 30 Receiving recessed part 31 Locking convex part 4 Connector 5 Ball (universal joint)
50 Rod fitting recess 6 Tool

Claims (5)

A tool such as a driver bit or a drill that includes a rod on which an electric rotary tool is installed at the rear, a joint body attached to the front of the rod, and a universal joint ball that is rotatable at the tip of the joint body. A directional control joint consisting of a detachable connector,
The rod direction surface of the ball of the connector is partly cut off, and the tip end head of the rod is formed into a freely fitting rod fitting recess, and the rod head fits into the rod fitting recess of the ball A direction control joint for an electric rotary tool, wherein the distal end direction of the connector is locked in a linear arrangement with respect to the rod in the locked state. a) The rear part of the joint body is formed in a shaft body on which the rod can slide, a receiving hole for receiving a lock ball is formed in a part of the shaft body, and two kinds of outer periphery of the rod A locking groove and a locking groove are formed, and the lock ball loaded in the receiving hole can be locked at the position of each groove,
b) A cylindrical control cylinder that is slidably movable on the outer periphery of the shaft body of the joint body is attached, and a receiving recess and a locking projection are formed on the inner surface of the control cylinder. The sphere can be positioned by being sandwiched between the locking groove and the locking projection or the locking groove and the locking projection via the receiving recess,
c) When the lock ball is positioned and fixed between the lock groove portion and the locking convex portion of the rod, the fitting state in which the head portion of the rod fits into the rod fitting concave portion of the ball is maintained, and the rotational force of the rod Is transmitted linearly to the tool at the tip of the connector,
d) or when the locking ball is positioned and fixed between the locking groove and the locking projection of the rod, the disengaged state between the head of the rod and the rod fitting recess of the ball is maintained, and the ball of the universal joint Rotates and the tool at the tip of the connector is tilted to the desired angle while the rotational force from the rod is transmitted,
The direction control coupling for an electric rotary tool according to claim 1, wherein   A ring base is attached to the base of the shaft body of the joint body, and the front inner periphery of the control cylinder is formed to be large enough to slide on the outer periphery of the ring base, The direction control for the electric rotary tool according to claim 1 or 2, wherein a spring is loaded and positioning of the lock ball to the lock groove portion or the locking groove portion is fixed by the spring force. Fittings.   The head of the rod is formed in a sharp point such as a cone, and the rod fitting recess of the ball is formed in a funnel shape that fits in the sharp part of the rod head. A direction control joint for an electric rotary tool according to claim 1 or 2.   The front portion of the joint body is formed in a hollow shape having a large space portion for interior of the ball of the universal joint and a small space portion for interior of the head portion of the rod, and is formed at the base end of the rod head in the small space portion. 5. A directional control joint for an electric rotary tool according to claim 1, wherein a locking ring body for preventing the coupling body from falling off is attached. .

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