DE8815514U1 - Ratchet with angled handle - Google Patents

Description

GM5030/88

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Applicant Hans MesenhölLer
5630 Remscheid

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The invention relates to a ratchet with a 1 Ratchet-shaped, hinged to a handle |

Working head, which has an attachment piece which is supported by a
The joint axis is penetrated and the
opposite narrow sides perpendicular to the plane of rotation are enclosed by a joint fork d*4 handle

which is opposite the plane of rotation of the ratchet }

can be angled and is equipped with a safety device ^

for the selected handle angle, which allows a hand-f

adjustable latch with a perpendicular to the;

Rotating plane of the ratchet standing ring of locking \

locking openings on the extension piece, l

whereby the latch is made from the fork base of the handle [

protrudes and by means of a in a slot of the \

Handle handle guided, with a gripping surface j

seen slider against the force of a spring to {

Fork base is retractable. \ In such a case, as provided for in DE-PS 29 41 616 j

known ratchet is the hand-operated \

Slider is arranged on the joint fork, which is why there, the setting and locking of a certain

Handle bending only with the use of both hands,

can be made, but in many cases, ;

especially in the case of &iacgr;

Working is annoying!

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The invention is intended to improve the ratchet of this type so that the angled grip and the locking of the angled position can be carried out with just one hand*

To solve this problem, the invention provides that the handle is provided with a central guide channel that extends to the handle and that the latch consists of a rod that can be moved in the guide channel and is rigidly connected to a slide that is located approximately within thumb reach of the handle. These measures now make it possible to use the same hand that is used to hold the ratchet handle to operate the slide with the thumb, whereby the latch is pulled back from the locking openings for unlocking or is released for re-engaging under the action of the spring.

According to a further development of the invention, it can be provided that the rod can be rotated through an angle of approximately 20° to 90°*, preferably 30°/, and that its slide is guided in an angled handle slide ζ, which consists of a front axial part and a rear radial part. This makes it possible to secure the bolt pulled out of the locking opening in the retracted position, so that the ratchet is first placed on the screw connection to be released with a freely movable handle, after which the handle is then pivoted into the desired angular position corresponding to the specific conditions. The slide is then rotated back from the secured rotational position with the same operating hand and released for engagement in the locking opening under the action of the spring.

The slider expediently comprises a ring that surrounds the handle and is provided with a thumb recess that has gripping surfaces that rise both towards the back and in the circumferential directions. These features and in particular the long guide of the rod create a locking device that is very easy to handle.

According to further features of the invention, the rod

■ The locking lugs can have a screwdriver blade-shaped locking opening and the locking openings can be designed as slots. To facilitate locking, the locking lugs or slots can have bevelled edges or slightly diverging side surfaces.

The ratchet according to the invention is described in more detail below with reference to the drawing, in which:

Fig. 1 the new ratchet in side view,

Fig. 2 the gun in Drau

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Fig. 3 a partial longitudinal section through the ratchet

according to the section line III-III in Fig. 2,

Fig. 4 in a plan view similar to Fig. 2 the

Ratchet with locking device engaged,

Fig. 5 the ratchet in secured

Locking device in unlocked position,

Fig. 6 the contour of a locking opening and the contours of two associated embodiments of the locking opening and

Fig. 7 shows a further embodiment of a locking opening with associated locking lug.

The ratchet shown in Fig. 1 to 5 consists of a handle 1, a handle 2, and a working head 3 with a square piece 4 mounted as a ratchet, which are pivotably connected to one another via a joint axis 5. The handle 1 is designed at one end as a bearing fork 6, which encloses an attachment piece 7 of the working head 3 provided with a hole for the joint axis 5. The handle 1 is pivotable around the

I Joint axis 5 can be pivoted and thus opposite the rotary

ij plane of the ratchet can be angled.

I The handle 1 is provided with a central, up to about

j Handle 2 extending guide channel 8 for a rod

I 9, which at its front end is Jus the fork I base 10 hsrsusrsgt and sn of a widened head

' a screwdriver-type blade

Locking lug 12 which has a perpendicular to the

. Level of the ratchet standing ring of locking

, openings 13 on the extension piece 7. At their

j handle end, the rod 9 is secured by means of a

f diametrical pin 14 is rigidly connected to a ring-shaped slider 15 that surrounds the handle 1, &igr;

whereby the diametrical pin 14 passes through two ^angled slots 16, 17 of the handle 1. Each

i Grip slot consists of a front, axial part

17a and a rear, radially directed slotted part 17o. Between the rear end of the rod 9 and the bottom 18 of the blind hole-like guide channel 8, a compression spring 19 is clamped, which loads the rod 9 in the direction of engagement of the locking nose 12 in one of the locking openings 13, as shown in Fig . 3.

To change the angle of the handle, the ring or slider 15, which is provided with a suitable thumb recess 20, which has gripping surfaces 21, 22, 23 facing both to the rear and in the circumferential direction, is first pulled back axially against the force of the spring 19 with the thumb of the hand holding the handle 2, so that the nose 12 emerges from the locking opening and a desired angle of the handle can be set. In order not to have to constantly hold the slider back against the force of the spring 19, the slider 15 can be rotated by about 30° in the retracted position, after which the locking device is in the position shown in fig. 5, in which the locking lug 12 is pulled out of the locking opening of the extension piece 7 and this unlocked position is secured by the diametrical pin 14 resting on the wall of the radial slot part 17b.

Fig. 6 illustrates the contours of a slot-shaped locking opening 13, which here is provided with a bevel 24 on each of its longitudinal edges to facilitate the insertion of the locking lug 12, which is also provided with bevels 25 on both of its longitudinal edges. Alternatively, a locking lug 12 can also be assigned to the locking opening 13, the front end of which is semi-cylindrically rounded.

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A very advantageous embodiment of the locking opening and associated locking nose in terms of manufacturing technology is shown in Fig. 7, in which the locking opening 13' and the locking nose each have slightly diverging side surfaces 26/26 and 27/27, respectively, and thus form rounded V-grooves or V-wedges.

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Claims (1)

GH 5030/83 Protection claims Ratchet with a working head designed as a ratchet and articulated on a handle (1) which has an attachment piece (7) through which an articulated axis (5) lying in the plane of rotation of the ratchet passes and which is enclosed on its opposite narrow sides perpendicular to the plane of rotation by an articulated fork (6) of the handle (1) which can be bent relative to the plane of rotation of the ratchet, and with a securing device for the selected handle angle, which has a manually adjustable bolt to which a ring of locking openings (13) perpendicular to the plane of rotation of the ratchet is assigned on the attachment piece (7), the bolt protruding from the fork base (12) of the handle (1) and being retractable to the fork base against the force of a spring (19) by means of a slider (15) guided in a slot (16, 17) of the handle, characterized in that the The handle (1) is provided with a central guide channel (8) extending approximately to the handle (2) and that the latch consists of a rod (9) which can be moved in the guide channel and which is rigidly connected to a slider (15) which is located approximately within thumb reach from the handle (2). Ratchet according to claim 1, characterized in that the rod (9) can be rotated through an angle of approximately 20° to 90°/preferably 30°, and that its slide (15) is guided in an angled handle slot (16, 17) which consists of a front axial part (17a) and a rear radial part (17b). 3. Ratchet according to claims 1 and 2, characterized in that the slide (15) comprises a ring enclosing the handle, which is provided with a thumb recess (20) which has gripping surfaces (21, 22, 23) rising both towards the rear and in the circumferential directions. 4. Ratchet according to one of claims 1 to 3, characterized in that the rod (8) has a locking nose (12) in the form of a screw-blade at its end protruding from the fork base (10), and that the locking openings (13) are designed as guards. 5. Ratchet according to claim 4, characterized in that the locking nose (12«, 12") or the slots (13, 13') have edge-side chamfers (24, 25) or ; slightly diverging side surfaces (26/26, 27/27) exhibit. I I ■ · « I III « III III II« III