JP2001025983A - Operation grip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily adjust an operation grip to the size of a hand by changing the interval between half shells. SOLUTION: The operation grip for a machine, in particular, a machine tool is provided with two half shells 2, 3 fitted to a single hand, the half shells 2, 3 are arranged at a specified interval from each other to form a grip periphery corresponding to the hand size. The grip periphery is adjustable by changing the interval between the assembled half shells 2, 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating grip for a machine, in particular for a machine tool, provided with two half-shells adapted for one hand, the half-shells being spaced apart from one another by a predetermined distance. And forming a grip perimeter corresponding to the size of the hand.

[0002]

BACKGROUND OF THE INVENTION Operating grips for machines, which are fixed to the machine for guiding the machine by hand or for connecting and disconnecting the machine, are known. This operating grip is advantageously used with electronic tools, such as hand saws, drilling machines and the like. This operating grip is often ergonomically formed based on the average male hand in Europe. An operating grip of this kind can be formed in the form of a pistol grip with a front half shell and a rear half shell connected to one another via fixing means.

If a switch to be operated with the index finger is arranged in the area of the front half shell, it is disadvantageous to use an operating grip with a fixed predefined grip perimeter. The operating grip of the machine is different between women and men, Asians and Europeans,
When used by a user having a hand of different size, it is extremely inconvenient to operate the switch or the safety push button with the ball of the hand in contact with the rear half shell. As a result, safe and hassle-free work by users with different hand sizes is not possible.

[0004]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an operating grip for a machine in which a user with specially small or large hands can perform a safe and fatigue-free operation. It is in.

[0005]

According to the invention, the object is achieved according to the invention by adjusting the circumference of the grip by changing the spacing of the combined half shells. It is solved by.

[0006]

According to the present invention, the operating grip can be easily adjusted to the size of the hand by changing the interval between the half shells. In that case, the operating grip is at least two that can easily change the mutual spacing of the half shells, for example the mutual spacing of the center of gravity of the half shells
Formed by two half shells. The first half shell forms an outer grip periphery around which the finger or fingers of the hand contact. Second
Has formed the periphery of another grip, around which the ball of the user's hand contacts. By varying the spacing of the half-shells that combine to form one operating grip, the entire circumference of the grip is increased or decreased depending on the hand of the user. This allows the operating grip to be easily adjusted to different hand sizes. The machine is therefore also used with extra small or large hands.

It is advantageous if one half shell forms a front area around the grip and the other half shell forms a rear area around the grip. In the simplest case, each half shell is formed as a half of a longitudinally cut plastic hollow cylinder. In that case,
The front half-shell is slightly larger and has a cutout in the area behind it, into which the rear half-shell can be inserted. On the other hand, both half shells can be formed substantially solid. The two half-shells, when combined, form a cavity that is tight against dust and water, in which a mechanism is provided for varying the distance between the two half-shells.

It is advantageous if the two half-shells are connected to one another via fixing means, by means of which the predefined spacing of the half-shells can be adjusted. Through this fixing means, the first half shell is directly connected to the second half shell. On the other hand, each half shell can be separately fixed to the machine and movably mounted in its place inside the guide rail of the casing. In each case, the half-shell spacing is adjusted so that the grip circumference outside the operating grip increases or decreases.

A spacer holder is additionally provided between the two half shells. A fixing means is fixed to both half shells and cooperates with this spacer holder. In the simplest case, the fastening means consist of fastening screws which, when fixedly fastened, maintain a predetermined mutual position of the half shells. When the tightening screw is unfastened (released or loosened), the distance between both half shells can be adjusted. After the half-shell spacing, which corresponds to the size of the respective hand, has been adjusted, the clamping screw is then fixedly tightened. The fixing means thereby tightens both half shells on the spacer holder. The spacer holder has a special mechanism by which the defined mutual spacing of the half shells is adjusted. The fixing means has the function of fixing both half shells in that position and thus the function of adjusting the half shells around the required grip.

[0010] The fixing means may further comprise a pin with a metal part projecting at right angles to the longitudinal axis.
This pin can then be fixed, for example, to the rear half shell, and upon rotation of the pin about the longitudinal axis,
It engages in a groove provided in the other half shell. This also allows the rear half shell to be fixed in position with respect to the front half shell.

[0011] Advantageously, the spacer holder is formed as a stepped support surface provided on one half shell.
For example, the front half-shell may have a stepped support surface, which increases the spacing of the half-shells when the rear half-shell moves towards an ascending or descending step. Or guarantee a reduction.

In one advantageous embodiment of the invention, the rear half shell comprises two inner webs which rest on two corresponding step-like spacer holders, so that The half shells are arranged parallel to one another during the spacing adjustment. Instead of a stepped spacer holder, the spacer holder can also be formed as an inclined plane with or without notches, so that the distance between the two half-shells is likewise varied and tightened. It can be fixed with attached screws. According to the invention, a spacer holder and / or fixing means is provided between both half shells. With this configuration, the periphery of the operation grip can be particularly easily adjusted, and the operation grip can be formed compact.

[0013] The circumference of the grip is preferably adjusted by unclamping (or loosening) the fastening means and moving the half shell towards the step above or below the spacer holder. To the extent that both half shells form approximately one hollow cylinder, the rear half shell is moved towards the longitudinal axis of the hollow cylinder and at the same time simultaneously because of the stepped spacer holder. By increasing or decreasing the inter-shell spacing, adjustments around the grip can be made. For example, the web of the rear half shell is moved along the up or down steps of the spacer holder, so that the mutual spacing of the half shells increases or is perpendicular to the longitudinal axis of the hollow cylinder. Decrease. In a further embodiment of the invention, one half-shell has a slot in which the fixing means is displaceable in a direction perpendicular to its longitudinal axis. In this case, for example, a threaded bush is provided in the other half-shell, and a fixing means formed as a screw is screwed into the threaded bush. As the rear half shell is moved towards the step of the spacer holder during the change of the spacing, the fixing means can be displaced in the slot of the rear half shell. Then, at the position where the desired grip perimeter is obtained, the fixing means is fixedly screwed in to secure this adjusted position.

On the other side, it is also possible to provide in one half-shell a longitudinally displaceable thread which moves together when adjusting around the grip. In this case, during the adjustment around the grip, the locking means moves with the movable thread until the locking means is locked again.

Finally, it is also possible to provide a plurality of fixing bushes arranged side by side in one half shell. For adjustment of the grip around the operating grip, the screw or pin is first unfastened and then the desired grip circumference is obtained and at the same time until the position of the fixing means coincides with one fixing bush. The rear half shell is moved towards the step of the spacer holder. For fixing around the grip, screws or pins are fixedly screwed or screwed back into the fixing bushes.

In one particularly advantageous embodiment of the invention, a switch is provided on the half shell, in particular on the front half shell. This switch serves, for example, for connecting and disconnecting the machine or for controlling the rotational speed, for example, on a drilling machine. The advantage of this configuration according to the invention is that the switch is operated particularly reliably and without any hassle with the grip circumference being optimally adjusted.

When adjusting the half shell, the distance between the switch and the rear half shell is also adjusted so that the switch can be operated by one of the fingers with the ball of the hand in contact with the periphery of the grip. This is advantageous. In that case, the switch may be located in a fixed position within the front section of the front half shell and may be movable with the front half shell to change the distance to the rear half shell. . This allows the grip perimeter to be changed on one side when changing the spacing of both half shells, while on the other side the switch position is adjusted so that the switch is in the correct position for the corresponding finger. You.

The two half-shells combined have approximately the shape of a pistol grip. In this configuration, both half-shells are ergonomically adapted to a one-handed grip configuration. This special shape of the operating grip results in particularly good handling of the machine tool.

Advantageously, a rear half shell is provided for supporting the ball of the hand. Therefore, the shape of the rear half shell conforms to the ball of the hand. The rear half shell is dimensionally smaller than the front half shell and can be inserted into a cutout provided on the dorsal side of the front half shell. On the other hand, the front half shell may be formed as a switch as a whole and inserted into the cutout on the front side of the rear half shell.

In a further advantageous embodiment of the invention, one half-shell overlaps the edge region of the other half-shell. This prevents dust and water from entering the hollow chamber formed inside the half shell. Grooves or lowered steps may also be provided in the edge regions of one half shell, in which the edge regions of the other half shell engage.

The inner surface of one half shell can be provided with a cover plate which prevents dust and water from entering in the area of the fixing means. On the other hand, this cover plate can also be arranged in the area of the switch in order to seal the operating grip against ambient influences in the area of the switch.

A safety push button can additionally be provided around the grip. This safety push button can advantageously be arranged on the side of the front half shell and can thus be operated by the thumb of the hand. The position of the safety push button can be adjusted in relation to the rear half shell. Particularly when the safety push button is arranged in the front half shell, the safety push button is moved and adjusted together when the distance is adjusted. This changes the position of the switch as well as the position of the associated safety push button upon displacement of the front half shell with respect to the rear half shell. As a result, the switch and the safety push button are always optimally adapted to the predefined hand size.

As already mentioned, at least one half shell is ergonomically adapted to one hand. For this, a grip groove can be provided in the front half shell,
And the rear half shell can be ergonomically adapted to the thumb ball of the hand.

There are various possibilities which can be arranged in an advantageous manner within the framework of the invention. To this end, in one aspect reference is made to claims other than claim 1 and in the other to the following description of several embodiments.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the illustrated embodiments.

The operating grip 1 is fixed to the machine tool and has two half-shells 2, 3 which fit in one hand. The front half shell 2 is provided at a variable distance with respect to the rear half shell 3. Forward half shell 2
And the rear half shell 3 in combination have a substantially pistol grip shape. If both longitudinal half-shells are oriented vertically, their horizontal mutual spacing can be varied. This change is effected by moving the rear half-shell 3 vertically downward, by increasing or decreasing the distance between the two half-shells 2 and 3 by means of a special spacer holder 10.

The operating grip 1 has a grip periphery formed by the periphery of the front half shell 2 and the periphery of the rear half shell 3. The grip circumference of the operating grip 1 can be increased or decreased by changing the distance between the front half shell 2 and the rear half shell 3. The operating grip 1 is suitable for a user with a large hand when the grip circumference is increased, and is suitable for a user with a small hand when the grip circumference is reduced.

The front half shell 2 has a shape in which a hollow cylinder is substantially divided in the vertical direction. A cutout 4 is provided in the rear area of the front half shell 2, into which the rear half shell 3 is inserted. In this combined state, both half shells 2 and 3 have the operating grip 1
To form To this end, the outer surface is ergonomically formed and conforms to the shape of one hand. In this embodiment, the front half shell 2 is slightly larger than the rear half shell 3. As a result, the dorsal side of the rear half shell 3 is inserted into the notch 4 of the front half shell 2.

The front half shell 2 has a switch 5 for operating the machine tool and / or controlling the rotational speed of the machine tool. A safety push button 6 is provided on the side of the front half shell 2 to stop the machine tool in an emergency. On the other side, a push button for fixing the switch 5 may be provided. At the same time as adjusting the circumference of the grip, the distance between the switch 5 and the safety push button 6 and the support for the ball is adjusted.

As can be seen from FIG. 2, the front half shell 2
Has a greater wall thickness than the rear half shell 3.
The front half shell 2 has a lowered step 7 in its rear section, the rear half shell 3 is mountable on this step and is horizontal when the operating knob 1 is held vertically. Can be moved to This makes it possible to adjust the distance between the front half shell 2 and the rear half shell 3.

FIG. 3 shows a fixing means 8 for combining the front half shell 2 and the rear half shell 3. This fixing means 8 is formed as a tightening screw 9. When the tightening screw is fixedly tightened, the distance between the front half shell 2 and the rear half shell 3 cannot be adjusted. When the tightening screw is released (disengagement or loosening), the rear half shell 3 is moved in a plurality of directions with respect to the front half shell 2.

The front half shell 2 has a spacer holder 10 inside. The spacer holder 10 consists of two spaced spacer elements 11, 12, each of which has one or more steps 13. On this step 13 a respective web 14 connected to the inside of the rear half shell 3 is supported. Depending on which step 3 of the two spacer elements 11, 12 of the spacer holder 10 the web 14 of the rear half-shell 3 is placed between the front half-shell 2 and the rear half-shell 3. The corresponding spacing is adjusted. In order to adjust the distance between the two half shells 2 and 3 along the longitudinal direction of the tightening screw 9, the tightening screw 9 is first released, and the rear half shell 3 is vertically and laterally moved relative to the tightening screw 9. , So that the web 14 is placed at a relatively high or relatively low position, respectively.
The clamping screw 9 is then fixedly tightened again in order to maintain this adjusted spacing of the half shells 2,3.

The rear half shell 3 is supported on the stepped spacer holder 10 of the front half shell 2. The spacer holder 10 allows mutual alignment of the two half shells 2, 3 at a plurality of positions. These positions differ from one another depending on the horizontal spacing of the two half-shells 2, 3 and the vertical position of the rear half-shell 3 with respect to the front half-shell 2. The half shells 2, 3 are connected to one another by a clamping screw 9, which must be released during adjustment.

As can be seen from FIG. 4, the fixing means 8 according to another embodiment of the invention can be screwed into a fixed threaded bush 15 arranged in the front half shell 2. If the distance between the two half shells 2 and 3 is changed, the screw head 16 of the tightening screw 9 can slide back and forth inside the long hole 17 when the position of the rear half shell 3 is moved. This slot 17 is arranged in the rear half shell 3 so that the distance between the two half shells 2 and 3 can be easily adjusted. Rear half shell 3 to prevent infiltration of moisture or dust into the inside of the operating grip 1
Is provided with a cover plate 18 inside. The shank of the tightening screw 9 is provided with an annular groove 19 in which two spring tongues 20 of the cover plate 18 are supported, whereby the cover plate 18
Are preloaded on the inner wall of the rear half shell 3. Slot 1
Numeral 7 is provided to enable vertical movement of the rear half shell 3 with respect to the front half shell 2.

FIG. 5 shows a further embodiment of the fixing means 8 according to the invention, in which a vertically movable thread part 21 is provided, whereby the clamping is effected. The screw 9 can be displaced in a direction perpendicular to the longitudinal direction of the tightening screw together with the thread portion 21 when adjusting the distance. The clamping screw 9 is released in order to adjust the distance between the front half shell 2 and the rear half shell 3. Rear half shell 3 in a direction perpendicular to the longitudinal axis of the tightening screw 9
During the displacement, the screw 9 moves together with the thread 21 towards the step 13 of the spacer elements 11, 12. After adjusting the desired spacing of both half shells 2 and 3,
The fastening screw 9 is then fixedly fastened again. In this manner, the grip periphery of the operating grip 1 can be advantageously adjusted.

Of course, a plurality of threaded bushes can also be arranged in the front shell 2 side by side, so that a special threaded bush is provided for each step 13 of the spacer holder 10. In that case,
The clamping screw 9 is completely disengaged at each adjustment and is screwed again into the corresponding thread of the front half-shell 2 after the spacing adjustment. The threaded bush can lie in one plane or be correspondingly stepped corresponding to the adjusting step. In the latter case, the tightening screw 9 can be formed relatively short.

[Brief description of the drawings]

FIG. 1 is an overall view of an operation grip according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the operating grip according to FIG. 1;

FIG. 3 is a longitudinal sectional view of the operating grip according to FIG. 1;

FIG. 4 shows a fixing means between both half shells according to a second embodiment according to the invention.

FIG. 5 shows a fixing means between both half shells according to a third embodiment according to the invention.

[Explanation of symbols]

1 operating grip, 2,3 half shell, 4 notch,
Reference Signs List 5 switch, 6 safety push button, 7 lowered step, 8 fixing means, 9 fastening screw, 10 spacer holder, 11, 12 spacer element, 13
Step, 14 web, 15 threaded bush,
16 screw head, 17 long hole, 18 cover plate, 19 annular groove, 20 spring tongue, 21 thread part

Claims (19)

[Claims] An operating grip for a machine, in particular a machine tool, comprising two half-shells adapted for one hand.
In the form in which these half shells are arranged at a predetermined distance from one another and form a grip circumference corresponding to the size of the hand, wherein the grip circumference is Operating grip, characterized in that it is adjustable by changing the spacing between the combined half shells (2, 3). 2. The operating grip according to claim 1, wherein one half shell forms a front area around the grip and the other half shell forms a rear area around the grip. 3. A spacer holder (10) is provided between the two half-shells (2, 3), by means of which a predefined distance between the half-shells (2, 3) is adjusted. The operating grip according to claim 1, wherein the operating grip is possible. 4. The method according to claim 1, wherein the fixing means (8) connects the two half-shells (2, 3) and cooperates with the spacer holder (10) when adjusting the distance. Operation grip described in section. 5. The operating grip according to claim 4, wherein the fixing means comprises a pin or a screw with a metal part projecting at right angles for engaging in the groove. 6. A spacer element (11, 1) in which a spacer holder (10) is stepped on one half shell (2).
5. The operating grip according to claim 4, wherein the webs of the other half shell (3) rest on these spacer elements. 6. 7. The periphery of the grip is adjusted by releasing the fastening of the fixing means (8) and moving one half-shell towards the ascending or descending step (13) of the spacer holder (10). An operation grip according to any one of claims 1 to 6. 8. One half shell (3) having a slot in which the fixing means (8) is displaceable in a direction perpendicular to its longitudinal axis. The operation grip according to any one of claims 7 to 7. 9. A longitudinally movable thread portion (21) is provided in one half shell (2), said thread portion being moved together when adjusting around the grip. The operation grip according to any one of items 4 to 7. 10. One half-shell (2) has a plurality of locking bushes arranged side by side, in particular with threads, in which locking means (8) are located. The operating grip according to any one of claims 4 to 7, wherein the operating grip can be fixed at a corresponding position. 11. A switch for operating a machine (5).
11. Any one of claims 1 to 10, wherein
Operation grip described in section. 12. The operating grip according to claim 11, wherein the switch (5) is provided on the front half shell (2). 13. The distance between the switch (5) and the rear half shell (3) can also be adjusted when adjusting the half shells (2, 3), so that the thumb ball of the hand around the grip is adjusted. 13. The operating grip according to claim 11, wherein the switch (5) is easily operable with one of the fingers when in contact. 14. Both half shells (2, 2) combined
14. The operating grip according to claim 1, wherein 3) has the shape of a pistol grip. 15. The operating grip according to claim 1, wherein the rear half shell is provided for supporting the ball of the hand. 16. The operating grip according to claim 1, wherein one half shell (2, 3) overlaps the edge area of the other half shell (3, 2). 17. A cover plate (18) is provided on the inner surface of one of the half shells (2, 3), the cover plate being protected against dust or water intrusion in the area of the fixing means (8). 17. The operating grip according to claim 1, wherein the grip is protected. 18. A safety push button (6) or a fixed push button is additionally provided around the grip, the position of which is adjustable with respect to the rear half shell (3).
An operating grip according to any one of claims 1 to 17. 19. At least one half shell (2, 3).
Is ergonomically adapted to the hand.
The operation grip according to any one of the above.