JPH081532A - driver - Google Patents

Abstract

(57) [Summary] [Purpose] The switching operation of the tip member can be easily and quickly performed with only one hand, and the tip member can be easily and reliably fixed to the handle member, and the total cost and weight can be reduced. A driver that can be reduced is provided. [Arrangement] The tip member 2 having the tip portions 2a, 2b of different types or sizes on both ends is slidably fitted in a through hole 1h formed in the handle member 1. Locking member 3
When the one tip end portion 2a of the tip member 2 projects to the use position and the other tip end portion 2b is in the storage position, the engaging recess 2c of the tip member 2 is aligned with the insertion hole 1j. By rotating the D-shaped cross-section portion 3d of the member 3 with the operation lever so as to engage with the engagement recess 2c, the tip member 2 is securely retained by the handle member 1. To release the locking, the operating lever of the locking member 3 is rotated 180 ° in the opposite direction to retract the D-shaped cross section 3d from the through hole 1h.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driver, and more particularly, to rotate a handle member by hand while pressing the tip of a spike member of a driver against the head of a screw such as a Phillips screw or a minus screw. The present invention relates to improvement of a driver for tightening or loosening the screw.

[0002]

2. Description of the Related Art The most standard screwdriver for tightening or loosening a Phillips screw or a minus screw (hereinafter referred to as a "standard driver") has a tip of a tip member having a minus shape or a plus ( It has a cross shape and is called a so-called minus driver or plus driver. In these drivers, the tip member is fitted and fixed in the handle member, and is not only dedicated to a minus screw and a plus screw, but also a plurality of drivers so as to be properly used according to the size of the head of the screw. You have to prepare.

[0003] As other types of drivers, there are a plurality of drivers having one handle member and a tip member of various sizes, and a plurality of drivers having different types such as a flat screw and a flat screw. A tip-member exchange-type driver, which selects an appropriate one of them according to the size and type of a screw to be fastened and can be mounted on the handle member and used, is often used.

In the case of this conventional example, a type in which a tip member is simply inserted into a fitting hole formed in a handle member (hereinafter referred to as a "plug-in type interchangeable driver"), and after being inserted into a fitting hole of a tip member, Tightening screw means provided at the entrance of the insertion hole (a male screw ring having a male screw formed on the outer periphery of a tapered ring and a plurality of slits formed in an axial direction), and a female screw being screwed on the outer periphery (Hereinafter referred to as a "semi-fixed exchangeable screwdriver") by fixing the spike member by reducing the diameter of the male screw ring by tightening the female screw ring.

[0005]

Among the conventional drivers described above, the standard driver has the advantages that the structure is simple and the unit price per one is relatively low. However, on the other hand, it is necessary to prepare a plurality of drivers that match the type of screw to be screwed (minus screw, plus screw) and the size of the screw, resulting in a large cost as a whole. In addition, when using the device, for example, when mounting the device on a telephone pole, the work involves inserting a plurality of drivers into the waist belt, which increases the bulk of the work tool for the operator and improves workability. Besides worsening, there is a problem that the fatigue level increases with the increase in weight.

Further, the above-mentioned "plug-in replacement driver"
In the "semi-fixed exchangeable driver", a plurality of tip members are required depending on the type and size of the screw to be screwed in, but since a relatively expensive handle member is commonly used, it is economical. Is much more advantageous than the standard driver.

[0007] However, the above-mentioned "plug-in replacement type driver" has to extract a tip member in accordance with the type and size of the screw, select a new tip member and insert it, and the operation is complicated. In particular, the replacement of the tip member requires the operation of both hands. For example, when one hand is occupied, the replacement is not possible.In addition, the tip member is simply inserted into the hole of the handle member. With the tip member facing down, the tip member is likely to fall off with only a slight shock or vibration, thus harming other workers located below or above the ground when working at heights. In addition, the work efficiency may be reduced as much as the user goes down to the ground to pick up the tip member that has fallen to the ground.

Further, the above-mentioned "semi-fixed exchangeable driver"
As in the case of the above-mentioned "insertable replacement type driver", when the type and size of the screw do not match, it is necessary to pull out the tip member one by one and select a new suitable tip member and insert it. In addition to this, when extracting the tip member, the tightening screw means must be loosened, a new tip member is inserted into the handle member, and then the tightening screw means is tightened again. Further, the operation of the tightening screw means is difficult to be performed with both hands, and when one hand is closed, the replacement and tightening operation cannot be performed.
The big problem remained.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has as its object the simple and inexpensive structure of the present invention, in which the switching operation of the tip member can be easily performed with one hand.
Moreover, since the tip member can be securely fixed to the handle member by a simple operation, and the tip member can be almost completely prevented from falling off from the handle member, the risk can be reduced especially at high places, and the work efficiency can be reduced. It is possible to provide a driver that can increase the power consumption.

[0010]

In order to achieve the above-mentioned object, according to the present invention, the handle member is manually pushed while pressing the tip end of the tip member of the driver against the head of a screw such as a plus screw or a minus screw. In a screwdriver that tightens or loosens the screw by rotating it, a through hole that extends from one end face to the other end face along the central axis is formed, and an insertion hole is formed in a direction substantially orthogonal to the central axis. Handle member having a length that is sufficiently longer than the handle member, one end and the other end of which are formed with a tip end portion of different size or type, and engaging recesses are provided at two positions of the intermediate portion. Is formed,
Locking that holds the tip member of the driver that is movably fitted in the through hole and one end side or the other end side of the tip member that is inserted into the insertion hole in a state in which the tip member projects to a use state. A member, and when the locking state of the locking member is released, the tip member can be replaced or moved, and one end side or the other end side of the tip member is projected in a used state. It is characterized in that it is configured such that the tip member can be locked by the locking portion.

Further, in order to achieve the above-mentioned object better, the insertion hole is formed so as to pass through a portion which is oriented in a direction orthogonal to the central axis and which is deviated from the central axis by a predetermined amount. The locking member has a diameter suitable for fitting into the insertion hole, and at least a portion of the portion facing the through hole is cut into a substantially semicircular shape to have a D-shaped cross section, which is formed on the tip member. The D of the locking member is moved in a state where the engaged concave portion is moved to a position corresponding to the insertion hole.
The sprocket member is configured to be locked by rotating the locking member so that the shaped cross section fits into the engagement recess.

In the present invention, the locking member may be
By operating the integrally connected operation lever member to a position oriented in one direction along the handle member, a locking function can be achieved. The locking function can be released.

The tip member according to the present invention includes:
A click stop groove is formed, a click ball elastically imparted to the click stop groove in the direction of falling is embedded in the handle member, and when one side of the tip member is positioned at a use state position, the click ball Is configured so as to be able to fall into the click stop groove.

[0014]

The driver constructed as described above has an ear member having a length that is sufficiently longer than the entire length of the handle member, and both ends thereof are of the type (plus or minus) or size. Since it is formed so as to differ, the desired ear tip is selectively made to protrude from the end of one of the through holes of the handle member, thereby immediately tightening the partner screw at the desired ear tip. Alternatively it can be used for loosening.

The state in which the one end side of the spike member protrudes can be reliably locked and held by the locking member. Further, in the present invention, the tips of different types or sizes are formed on both ends of the tip member, and since it is sufficient to simply slide on the handle member to select the tip on one side, it is possible to use only one hand. The selecting operation can be performed quickly and easily, and the locking / unlocking operation of the locking member can be performed with only one hand.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. 1 is a longitudinal sectional view showing the internal structure of a driver according to an embodiment of the present invention, FIG. 2 is a plan view of the same embodiment, FIG. 3 is a bottom view of the same embodiment, and FIG. An example front view, FIG. 5 is a rear view of the same embodiment, and FIG. 6 is a left side view showing a configuration of an example of a locking member used in the same embodiment.

1 to 6, reference numeral 1 denotes a handle member called a handle or a handle. The outer shape of the handle member 1 has a substantially columnar shape. More specifically, the large diameter portion 1a having a large diameter is formed in the middle portion, and the large diameter portion 1a is formed in the portions near both ends. Smaller diameter portion 1b formed to have a smaller diameter than
In the portion where 1c is sandwiched between the large diameter portion 1a and the small diameter portions 1b and 1c, recessed portions 1d and 1e each having a smaller diameter than the small diameter portions 1b and 1c are provided.

A through hole 1h extending from one end surface (front surface) to the other end surface (back surface) is formed in the handle member 1 with the central axis 1i as the center of circle. Further, the handle member 1 is provided with an insertion hole 1j extending from the upper surface of the outer peripheral surface to the bottom surface. Two
Is a spike member that tightens or loosens the screw by rotating the spike tip 2a or 2b while pressing the spike tip 2a or 2b against a driver groove formed in the head of a plus screw or a minus screw (not shown).

In this embodiment, the tip member 2 is entirely formed in a hexagonal column shape, and one end (the left side in FIG. 1) is engaged with a cross-shaped groove of a Phillips screw so as to be fitted to the Phillips screw. A cross-shaped (+) spike tip 2a is formed so as to be suitable for applying a rotating force (torque), and the other end (right side in FIG. 1) is engaged with a one-shaped groove of a minus screw. One-letter ear tip 2b is formed so as to be suitable for applying a rotating force (torque) to the minus screw.

The spike member 2 has a longitudinal direction 2.
Engagement recesses 2c and 2d are provided at the locations, each of which is a circular groove having a substantially semicircular cross section. These engagement recesses 2c,
Regarding the formation positional relationship of 2d, one engagement recess 2c
Is a position where the plus-side ear tip 2a protrudes largely to the left and the minus-side ear tip 2b is housed in the handle member 1 (the ear tip 2b is substantially flush with the other end face 1g of the handle member 1). Position), it is formed to match a position facing (corresponding to) the insertion hole 1j formed in the handle member 1.

The other engaging concave portion 2d is such that the minus side ear tip 2b protrudes greatly to the right and the plus side ear tip 2b.
In the state where “a” is stored in the handle member 1 (the position where the ear tip 2a is substantially flush with one end face 1f of the handle member 1), it faces the insertion hole 1j formed in the handle member 1. It is formed according to (corresponding) position. 3 is inserted and held in the insertion hole 1j of the handle member 1, and the spike tip 2a of the spike member 2
Alternatively, it is a locking member that locks and holds that state when one side of 2b is in use and the other side is in storage.

As shown in FIG. 6, the locking member 3 comprises a cylindrical shaft 3a, an operation lever 3b connected to one end of the shaft 3a, and a caulking portion 3c. In the middle of the portion 3a, as shown in FIG.
The D-shaped cross section 3d is provided by being subjected to a scraping process so as to be slid off along the longitudinal direction of the operation lever 3b.

At the initial stage, the caulking portion 3c is
After the shaft portion 3a is inserted into the insertion hole 1j of the handle member 1 and has a diameter equal to that of the shaft member 3a, it is caulked into a semi-spherical shape as shown in FIG. The function of preventing the escape from the handle member 1 can be achieved.

Next, the operation of the driver according to the embodiment of the present invention constructed as described above will be described. Although only one spike member 2 is shown in the figure, for example, one spike tip 2a and the other spike tip 2b are of different types (plus type, minus type) or of the same type. There are a plurality of different sizes (for example,
5 to 6) are prepared.

First, in consideration of whether a screw to be tightened or loosened is a plus screw or a minus screw, and the size of the screw, a tip member 2 suitable for the screw is selected. First, the locking member 3 is previously
The operation lever 3b is rotated to set the D-shaped cross section 3d in the retracted state from the through hole 1h.

Then, the tip member 2 is inserted into the through hole 1h of the handle member 1 from one side of the tip end portions 2a, 2b, and the ear tip end portion 2a or 2b on the side not to be used is penetrated through the through hole 1h.
And is inserted until it is flush with the end face 1f or 1g of the handle member 1. At this time, the engagement recess 2 of the tip member 2
Either c or 2d is the insertion hole 1j of the handle member 1.
Will correspond to.

Next, the operation lever 3b is turned by about 180 ° by hand to set it to the angular position shown in FIG. Then, the D-shaped cross section 3d of the locking member 3 engages with either of the engaging recesses 2c or 2d of the tip member 2 as shown in FIG. 1, so that the tip member 2 is securely engaged with the handle member 1. Is stopped.
The driver set in this way can be used for tightening or loosening screws with the same convenience as a normal driver.

If it is necessary to loosen the minus screw from the state shown in FIG. 1, first set the operating lever 3b of the locking member 3 from the set position in FIG. By rotating the D-shaped cross section 3d about 180 ° clockwise, the D-shaped cross section 3d is removed from the engagement recess 2c and retracted from the through hole 1h. As a result, the tip member 2 can freely slide in the through hole 1h of the handle member 1. In this state, the tip member 2 is pushed rightward in FIG. Push it in until it becomes almost the same surface.

At this time, since the engaging recess 2d faces the position where the insertion hole 1j is formed, the operating lever 3b of the locking member 3 is
The D-shaped cross section 3d is fitted into the engagement recess 2d by rotating counterclockwise by 180 °. Thereby, the tip member 2 is
The spike tip 2b is securely locked and held by the handle member 1 with the spike tip 2b set at the use position.

Further, in the above-mentioned place for matching the position of the engaging recess 2c or 2d formed of the circumferential groove with the insertion hole 1j, in the above description, the ear end 2a or 2b is the one end surface 1f and the other end surface of the handle member 1. An example in which they are aligned so that they are flush with 1 g has been described, but if a clip stop mechanism as shown in FIG.
One of a and 2b may be further housed inside the handle member 1.

That is, in FIG. 1, the through hole 1h is formed from the outer peripheral surface at a portion (which is offset by 90 ° in the embodiment shown in FIG. 1) of the large diameter portion 1a of the handle member 1 and the portion where the insertion hole 1j is formed. A click ball fitting hole 1k reaching the position is drilled. However, the diameter of the deep portion of the click ball insertion hole 1k (the portion near the through hole 1h) is gradually (or stepwise) reduced so as to be smaller than the diameter of the click ball 4.
The diameter of the click ball 4 is reduced so that the click ball 4 only partially faces the through hole 1h, but does not fall.

The click ball 4 fitted in the bottom portion of the click ball fitting hole 1k in this way is constantly pressed by the pressing spring 5 with an elastic force toward the center, and the other end of the pressing spring 5 is , Click ball insertion hole 1k
And is held by a spring retainer 6 screwed into the female screw formed in the above.

The click ball 4 of the click stop mechanism thus configured constantly presses the outer peripheral surface of the tip member 2 elastically, but allows the tip member 2 to move in the axial direction. For example, when fitting into one of the engagement recesses 2c and 2d also serving as at least two click stop grooves formed at appropriate positions of the tip member 2, the movement of the tip member 2 becomes heavy and substantially stops at that position. Will be done. This click stop position is set to the two engagement recesses 2c.
And 2d may be set to be positions corresponding to the insertion holes 1j.

According to the embodiment described above and shown in the drawings,
It is possible to provide a driver having various effects as described below. First, the spike tip member 2 has spike tip portions 2a and 2b of different types or sizes, and has a length much larger than the entire length of the handle member 1, and the spike tip portions 2a and 2b Since only one of them is projected to the use position and the state is locked and held, the screwdriver can be used with the same feeling as a normal driver.

In particular, when the tip of the ear on the other side is to be used, simply rotating the locking member 3 by 180 °
The locking member 3 can be released again in the opposite direction in a state where the locking member 3 can be released and the tip member 1 is moved so as to protrude to the other side.
The swivel member 1 can be switched and retained by simply rotating it. Moreover, the selection switching operation of the tip portions 2a, 2b is extremely simple and quick, and since one-handed operation can be performed, switching can be performed even when one hand is occupied, and a driver with excellent usability is provided. You can

Secondly, since only one handle member is sufficient and the tip member 2 has two spike tips, it is possible to use a conventional plug-in replaceable driver or semi-fixed replaceable driver. By comparison, the number of the ear members 2 is only half, and the total cost can be significantly reduced. In addition, the weight is reduced by that much, so that the degree of fatigue of the worker can be reduced.

Thirdly, since the tip member 2 is locked and held in its use state by the locking member 3, the tip member 2 is turned downward even when a considerable impact or vibration is applied. There is no danger that other workers on the lower level or on the ground may be harmed during work at a high place without falling off.

Fourth, according to the above-described embodiment, the click stop mechanism is used to position the spike member 2 at the set position on the handle member 1, in other words, the engaging recess 2c is engaged with the D-shaped cross section 3d of the locking member 3. , 2d, the selection switching operation of the tip member 1 is greatly facilitated and speeded up, and the efficiency of the screwing operation can be further improved. It is also possible to prevent the tip member 2 from accidentally falling off when the stop is released.

The present invention is not limited to the embodiment described above and shown in the drawings, but can be variously modified without departing from the gist of the present invention. For example, the locking member is
Although the configuration is such that the tip member is locked and released, a knob may be used instead of the operation lever, and instead of forming the D-shaped cross section 3d, it may fall into the through hole 1h,
The shaft portion may be configured to move up and down so as to retreat, and may be configured to apply a spring biasing force to the shaft portion in a direction in which the shaft portion always falls into the through hole 1h.

[0040]

As described above in detail, according to the present invention, 1
Since a plurality of tip members can be commonly used by individual handle members, and the tip members have one tip end portion of different type or size at each end, the tip member to be prepared is Half the number is sufficient, and the total cost can be significantly reduced, and the weight carried by the worker can be reduced to reduce the fatigue level of the worker, and the tip end of one of the tip members can be reduced. Part and the other tip part of the ear, select the switching, after releasing the locking member and moving the tip member,
Because it is sufficient with a simple operation just to lock again, it can be done quickly with one hand operation, and furthermore, the tip of the unused ear is completely housed in the through hole of the handle member, And since it is securely locked and held, there is no danger of getting stuck in the hand during the screwing operation, and even if vibration or impact is applied while the tip of the spike is directed downward, the spike member is a handle member. Therefore, it is possible to provide a driver that does not fall out of the vehicle and that is not likely to cause harm to other workers located below or on the ground while working at heights.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an internal configuration of a driver according to one embodiment of the present invention.

FIG. 2 is a plan view showing an external configuration of the embodiment.

FIG. 3 is a bottom view showing the external configuration of the embodiment.

FIG. 4 is a front view showing an external configuration of the embodiment.

FIG. 5 is a rear view showing the external configuration of the embodiment.

FIG. 6 is a left side view showing a configuration of an example of a locking member used in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handle member 1f One end surface 1g Other end surface 1h Through hole 1j Insertion hole 1k Click ball insertion hole 2 Ear member 2a, 2b Ear tip portion 2c, 2d Engagement recess 3 Lock member 3a Shaft portion 3b Operation lever 3c Caulking portion 3d D Mold cross section 4 Click ball 5 Press spring 6 Spring retainer

Claims (4)

[Claims] 1. A driver for tightening or loosening the screw by manually rotating the handle member while pressing the tip end of the tip member of the driver against the head of a screw such as a Phillips screw or a minus screw. A handle member having a through hole extending from one end surface to the other end surface along the axis and an insertion hole formed in a direction substantially orthogonal to the central axis, and a total length sufficiently longer than the total length of the handle member. Of a driver that has a tip end portion of different size or type formed at one end portion and the other end portion thereof and has engaging recesses formed at two portions of the intermediate portion, and is movably fitted into the through hole. A tip member, and a locking member that is inserted into the insertion hole and locks and holds one end side or the other end side of the tip member in a state of protruding to a use state. When the stop state is released, The tip member can be replaced or moved, and the tip member can be locked by the locking portion in a state in which one end side or the other end side of the tip member is projected to a use state. Driver to do. 2. The insertion hole is formed so as to pass through a portion which is oriented in a direction orthogonal to the central axis and is shifted by a predetermined amount with respect to the central axis. A cross section of a portion having a diameter suitable for fitting and facing at least the through hole is cut out in a substantially semicircular shape to form a D-shaped cross section, and the engaging recess formed in the tip member corresponds to the insertion hole. And rotating the locking member so that the D-shaped cross section of the locking member fits into the engagement concave portion in a state where the locking member is moved to a position where the hook member is locked. The driver according to claim 1, wherein: 3. The locking member may perform a locking function by rotating an operation lever integrally connected to a position in one direction along the handle member. The driver according to claim 2, wherein the locking function can be released by a further 180 ° rotation operation. 4. A click stop groove is formed on the tip member, and a click ball elastically imparted to the click member is embedded in the handle member so that one side of the tip member is used. The driver according to claim 1, wherein the click ball is configured so as to be able to fall into the click stop groove when positioned in the state position.