DE29900618U1 - Ratchet ring spanner - Google Patents

Description

TIME TIME DlGKEL V- V- PATENT ATTORNEYS EUROPEAN PATENT AND TRADEMARK ATTORNEYS

PO BOX 26 02 51 TELEPHONE: 089/22 18 06 HERRNSTRASSE 15

D-80059 MUNICH FAX: 089/22 26 27 D-80539 MUNICH

7116 ll/os

Chih-Ching HSIEH

No. 64, Lane 107, Liang Tsun Rd.

Fongyuan City

Taichung Hsien

Taiwan, R.O.C.

Ratchet ring spanner

The invention relates to a ratchet ring spanner according to the preamble of claim 1.

When operating a wrench to turn bolts, nuts, etc., the wrench must be held perpendicular to the workpiece, and a torque must be constantly applied to the wrench. If the wrench is not held perpendicular to the workpiece, it may slip off the workpiece, preventing the workpiece from being turned. Fig. 1 shows a known ratchet ring wrench designed to eliminate this problem. This ratchet ring wrench comprises a ring wrench with an inner annular groove at one end and a split stop ring arranged in the annular groove inside the ring wrench for locking the workpiece to be turned in the ring wrench so that the workpiece can be turned with the ratchet ring wrench. However, this arrangement of a ratchet ring wrench still has disadvantages. One disadvantage of this known ratchet ring wrench is the complicated installation procedure for the split stop ring. Since the inner annular groove is arranged inside the ratchet ring, a special tool is required to compress the split stop ring.

«••2

of the split stop ring is required to arrange the split stop ring or stop ring in the inner annular groove. Another disadvantage of this ratchet ring wrench known in the prior art is a complicated manufacturing process for producing the inner annular groove in the ratchet ring.

The invention is therefore based on the object of providing an improved ratchet ring spanner of the above-mentioned type, which eliminates the aforementioned disadvantages.

This object is achieved by the invention with the features characterized in claim 1. Advantageous embodiments emerge from the dependent claims.

The solution according to the invention has the advantage that the ratchet ring spanner is firmly locked in its position for turning screws, nuts, etc. without the risk of slipping off the workpiece to be turned. The ratchet ring spanner is thus firmly secured to the workpiece so that the latter can be easily turned with the wrench. At the same time, the ratchet ring spanner according to the invention is easy to assemble and inexpensive to manufacture.

In a preferred embodiment, the ratchet ring wrench according to the invention comprises a threaded recess on one side of the ratchet ring, wherein a fixing ring is provided which is screwed directly into the threaded recess for locking the ratchet ring when rotating the workpiece.

The invention is explained in more detail below with reference to the drawing.

Fig. 1 shows a ratchet ring spanner known in the prior art in Ex

explosion representation,

Fig. 2 shows a first preferred embodiment of an inventive

Ratchet ring spanner in exploded view,

■ ·

Fig. 3 in sectional view,

Fig. 4 shows a second preferred embodiment of an inventive

Ratchet ring spanner in exploded view.

The first preferred embodiment of a ratchet ring wrench according to the invention shown in Fig. 2 and 3 comprises a body 1 which ends on one side in a ratchet ring 11. The ratchet ring 11 comprises on one side a

&iacgr;&ogr; annular recess 12, with an internal thread 121 formed on the peripheral wall of the annular recess 12. In the annular recess 12 inside the ratchet ring 11, a stop ring or stop ring 2 is arranged for locking the ratchet ring 11 after it has been placed on a workpiece to be rotated, so that the workpiece can be rotated with the ratchet ring wrench. In the annular recess 12 inside the ratchet ring 11, a fixing ring 3 is also arranged for holding the stop ring 2. The fixing ring 3 has an external thread 31 which rises around its circumference and can be screwed into the internal thread 121 in the annular recess 12.

Fig. 4 shows an alternative preferred embodiment of a ratchet ring wrench according to the invention. In this preferred embodiment, the ratchet ring wrench comprises a body 1 with a ratchet ring 11 at one end, wherein the ratchet ring 11 has an annular recess 12 on one side, in which an internal thread 121 is formed on its peripheral wall. A fixing ring 3 is provided in the annular recess 12 for locking the ratchet ring 11 after it has been placed on a workpiece to be rotated, whereby the workpiece can be rotated by means of the ratchet ring wrench. The fixing ring 3 has an external thread 31 which can be screwed into the internal thread 121 of the annular recess 12. The fixing ring 3 also has an upper flange 32 which is formed around the inner circumference of the same for locking the workpiece to be rotated.

In summary, the invention relates to a ratchet ring wrench in which a stop ring or stop ring 2 is arranged in a threaded, annular recess on one side of the ratchet ring 11 of the ratchet ring wrench for locking the ratchet ring 11 in relation to the workpiece to be rotated, so that the workpiece can be rotated with the ratchet ring wrench. A fixing ring 3 is screwed into the threaded recess 12 to hold the stop ring 2.

Claims (4)

ll/os Protection claims 1. Ratchet ring spanner with a body (1) at one end of which a ratchet ring (11) is designed for turning screws, nuts, etc., &iacgr;&ogr; characterized by that a threaded, annular recess is formed on one side of the ratchet ring (11), wherein a stop ring (2) is screwed into the threaded recess (12) for locking with respect to the workpiece to be rotated, so that the workpiece can be rotated with the ratchet ring wrench. 2. Ratchet ring spanner according to claim 1, characterized in that the stop ring is designed as a split stop ring (2). 3. Ratchet ring spanner according to claim 1, characterized in that the stop ring is designed as a fixing ring (3) with an upper flange (32) formed around the inner circumference of the fixing ring (3). 4. Ratchet ring spanner according to claim 1, characterized in that for holding the stop ring (2) in the threaded recess (12) a fixing ring (3) is screwed into the thread of the annular recess (12).