JPH04189477A - Plural rod built-in type driver - Google Patents

Abstract

PURPOSE:To dispense with the necessity of driving various kinds of drivers in a working site and allow the use of one driver as plural drivers with a simple operation by one hand by providing a plurality of driver rods necessary for work in a bushing. CONSTITUTION:Among a plurality of built-in driver rods 1, 11, the end part opposite to the extended shaft 3 (or 31) of a required driver rod 1 (or 11) is axially pushed toward the top end of a bushing 12, whereby a required driver bit 2 (or 21) is fixed in a position protruded from the funnel-shaped hole 11 of the bushing 12. Thereafter, it is used as the driver of a required kind by rotating the bushing 12. When the driver bit 21 (or 2) of the different kind is required, then, the end part opposite to the extended shaft 31 (or 3) of the corresponding driver rod 11 (or 1) is axially pushed toward the top end, whereby the used driver rod 1 (or 11) is changed to the driver rod 11 (or 1) provided with the required driver bit 21 (or 2).

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a driver, and particularly to a portable driver incorporating a plurality of types of driver rods.

[Prior Art] Conventionally, this type of portable screwdriver has only had one driver rod with one type of driver bit per handle, as shown in FIG.

[Problems to be Solved by the Invention] When working with the above-mentioned conventional portable screwdriver, the driver only has one screwdriver opening equipped with one type of screwdriver pin. Since there was no
When installing or removing multiple types of screws in the field, prepare a driver for each type of screw, or at least a driver rod equipped with driver bits for each type of screw, and use it as necessary. There was a problem in that it had to be attached to and removed from the mantle at the site. An object of the present invention is to provide a multi-rod built-in type driver rod equipped with a plurality of types of driver bits that can be easily replaced in the field by a simple one-handed operation in order to solve the problems of the conventional technology. The purpose is to provide drivers.

[Means for Solving the Problems] In order to achieve the above object, the multi-rod built-in driver of the present invention includes a driver spindle having a driver bit at one end, and a driver spindle connected to the other end of the driver spindle via a joint. The driver is provided with an extension shaft and a sleeve housing a plurality of sets of driver rods, each extension shaft having an extension shaft of another set near the end opposite to the joint connection end with the main shaft. It has a protrusion that can freely engage with the convex end of the shaft, and a cannula-like sliding guide part, and has a bent part made of a flexible material in the middle of the extended shaft, and the tip of the cannula has a set of The driver shaft has a funnel-shaped hole through which the driver bit can freely move in and out, and the shape of the opening of the funnel-shaped hole is polygonal or partially has a protrusion, and the cross section of at least the entrance/exit part of the driver shaft is A liner ring that is similar in shape and fits into each other and has extension shaft through holes of the same number as the number of sets of driver rods is fixed on the rear inner surface of the mantle,
A spring is elastically loaded between a spring retaining flange provided on each extension shaft and a spring stopper portion provided in each extension shaft through hole of the liner ring. Equipped with a guide groove for the moving guide section.

[Action 1] Therefore, by pushing the ends of the plurality of built-in driver rods opposite to the desired extension axes in the axial direction toward the tip of the cannula, the desired driver bit is inserted into the funnel-shaped hole of the cannula. It is fixed in a position protruding from the shaft, and can be used as the desired type of driver by rotating the sleeve, and if a different type of driver bit is required, the built-in extension shaft of the driver rod can be used. By pushing the opposite end axially toward the tip, a conventionally used driver rod can be easily converted into a driver rod equipped with the required driver bit.

[Example] Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal cross-sectional view of an embodiment of a multi-rod built-in driver of the present invention, FIG. 2 is a cross-sectional view of FIG. 1 taken along line A-A', and FIG. 3 is a cross-sectional view of FIG. FIG. 4 is a right side view of FIG. 1 viewed from direction C. - On the set of driver rods, one end is provided with a driver bit 2, the other end is connected to one end of an extension shaft 3 and a driver main shaft 5 which is rotatably connected only on an arbitrary plane by a joint 4, and a driver shaft 5 is provided in the middle. For example, the extension shaft 3 has a bent portion 6 made of a flexible material such as hard rubber. The extension shaft 3 has an end 7 that is visible from the outside of the cannula.
It has a terminal protrusion 8 and a protrusion 9 that can freely engage with the terminal protrusion 81 of the extension shaft 31 of the credit union, and a cannula-like sliding guide part IO near the end 7 thereof. The cannula 12, which has a funnel-shaped longitudinal section on the inner wall surface at its tip and has a funnel-shaped hole 11 into which the driver main shafts 5 of one set of driver rods 1 can freely move in and out, and which houses two sets of driver rods, has two extensions. A liner ring 14 having a shaft through hole 13 is fixedly provided, and a spring locking flange 15 is provided on the extension shaft 3, and a spring stopper portion 16 provided in the extension shaft through hole 13 of the liner ring 14 is connected between the liner ring 14 and the spring stopper portion 16 provided in the extension shaft through hole 13. A spring 17 is loaded. Further, the opening surface shape of the funnel-shaped hole 11 is square in this embodiment, and as shown in FIG. On the inner surface, there is a guide groove 1 of the sleeve-like sliding guide portion 10° 10 of each of the extension shafts 3, 3.
8,181 are equipped.

The above is an example in which two sets of driver rods are built into the mantle, but many driver rods built in may be used in the same way, and the opening surface shape of the funnel-shaped hole may be square or other shapes. A rectangular shape or a shape having a protrusion on a part is used, and instead of the identifiable end 7, a stamp is pre-marked on the cannula for identification, although it cannot be directly identified from the outside of the cannula. This structure has a wide range of applications, such as an indirect identification device in which a part of the cannula is movable so that it can be matched with the markings on the required driver rod, and the desired driver rod can be selected by pressing the suppression part at the end of the cannula. It can be used as

Next, the operation of this embodiment will be explained.

Among the driver rods equipped with different driver bits 2゜21 built into the cannula 12, identify the ends 7 on the driver rods necessary for the work in the direction of the funnel-shaped hole 11 along the upper axis. When pressed, the extension shaft 3 passes through the extension shaft through hole 13.
Then, the sliding guide part lO in the cannula slides while being guided by the guide groove 18, and the tip of the driver bit 2 at one end of the driver main shaft 5, which is connected by the joint 4, protrudes from the funnel-shaped hole 11 by a required distance, and at the same time the end The convex portion 8 corresponds to the protrusion 9 of the extension shaft 31 of the other driver rod upper unit. is engaged with. Work is started in this state, but the repulsive force in the rotational direction applied to the driver bit 2 is similar to the square cross-sectional shape of the driver main shaft 5 with the driver bit 2 protruding from the funnel-shaped hole 11. Due to the shape of the funnel-shaped hole 11 into which the driver main shaft 5 is fitted, the repulsive force in the axial direction that is absorbed by the sleeve 12 and applied to the driver bit 2 is caused by the terminal protrusion 8 of the extension shaft 3 and the other parts. The protrusion 9 of the extension shaft 31 of the driver rod of
It is absorbed by the engagement force between I and I.

Next, when using the driver bit 2 of the other driver rod b, push the end 71 along the upper axis of the identification in the direction of the funnel-shaped hole 11, so that the driver bit 2 that has been engaged with the protrusion 91 until now is pressed. The engagement of the terminal convex portion 8 on the other driver rod is released, and the spring stopper portion 16 provided in the extension shaft through hole 13 of the lychee ring 14 and the spring locking flange 15 provided on the extension shaft 3 are disengaged. The upper part of the driver rod returns to its original built-in position due to the action of the spring 17 loaded between the ends 7 and 7. By continuing to press , the driver rod Eyu performs the same operation as the other driver rods 1, and repeats the same action. In this embodiment, two sets of driver rods are built-in, but three or more sets of built-in driver rods may also be considered as a design application. In addition, in this embodiment, a part of the cross section of the driver main shaft and the funnel-shaped hole of the cannula were square in shape, but the heels or protrusions of each other were engaged with each other, so that the rotational direction applied to the driver bit was It is sufficient that the repulsive force is absorbed by the sleeve, and therefore a polygonal shape other than a square or a shape with protrusions can be considered, but this is also a matter of design.

Furthermore, the bent portion 6 made of a flexible material that the extension shaft 3 has in the middle has the effect of smoothing the movement along the axis on the driver rod.

[Effects of the Invention] As explained above, the multi-rod built-in driver of the present invention has a plurality of driver rods necessary for work built into the mantle, and the required ends of the mantle can be moved according to the needs of the work site. Since a single screwdriver can be used with the same effect as a screwdriver with multiple screwdriver bits by using the fingers of one hand from outside the pipe, there is no need to bring multiple types of screwdrivers to the work site, and it is also possible to use a single screwdriver with one hand. One driver can be used as multiple drivers depending on the operation,
It has the effect of promoting efficiency in on-site work.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of an embodiment of the multi-rod built-in driver of the present invention, FIG. 2 is a cross-sectional view of FIG. 1 taken along line A-A', and FIG. 3 is a cross-sectional view of FIG. 4 is a right side view of FIG. 1 viewed from direction C, and FIG. 5 is a perspective view of a conventional portable driver. 1, ↓Y, 101...driver rod, 2.2. ．． 1
02...Driver bit, 3.31...Extension shaft, 4...-joint, 5...Driver main shaft, 6...Bending part, 7.71...End part, 8.8,・Terminal convex portion, 9.9. ...protrusion, 10.10. ... Mantle-like sliding guide part, 11 ... Funnel-shaped hole, 12 ... Mantle tube, 13 ... - Extension shaft through hole, 14 ... Liner ring, 15 ... Spring latching flange , 16... Spring stopper portion, 17... Spring, 18.18. ...Guide groove, 103...Handle.

Claims (1)

[Claims] 1. A driver provided with a mantle housing a plurality of sets of driver rods each consisting of a driver main shaft having a driver bit at one end and an extension shaft connected to the other end of the driver main shaft via a joint. , each of the extension shafts is provided with a protrusion that can freely engage with the terminal protrusion of the other set of extension shafts near the end opposite to the joint connection end with the main shaft, and a sliding guide in the sleeve, and It has a bent part made of flexible material in the middle,
The tip of the cannula has a funnel-shaped hole into which the driver bits of a set of driver main shafts can freely enter and exit. A liner ring that is similar in cross-sectional shape to at least the inlet/outlet portion and that fit into each other, and has extension shaft through holes of the same number as the number of sets of driver rods is fixed on the rear inner surface of the mantle, and a liner ring is fixed to each extension shaft. A spring is elastically loaded between the provided spring retaining flange and a spring stopper portion provided in each extension shaft through hole of the liner ring, and furthermore, a spring is provided on the rear inner surface of the sleeve for a sliding guide portion in the sleeve for each extension shaft. A multi-rod built-in driver characterized by being equipped with a guide groove.