초록 ▼

The invention relates to a shaft of a tool or the like with an adjustable length, the shaft comprising a first shaft section (2 ) and a second shaft section (10) which are attached to each other by adjusting means and move telescopically with respect to each other when the shaft length is adjusted.

The invention relates to a shaft of a tool or the like with an adjustable length, the shaft comprising a first shaft section (2 ) and a second shaft section (10) which are attached to each other by adjusting means and move telescopically with respect to each other when the shaft length is adjusted. In that case, the adjusting means for adjusting the shaft length comprise a sleeve (4) provided in the second shaft section (10) and an at least partly toothed spindle (6) provided in the first shaft section (2), the first end of the spindle being taken through the sleeve (4). The sleeve ( 4) and the spindle (6) attach the first (2) and the second (10) shaft section adjustably to each other so that the sleeve (4) and the spindle (6) can be turned with respect to each other into a position preventing the adjustment of the shaft length and into a position allowing the adjustment of the shaft length where the spindle (6) can move in the sleeve (4) in the longitudinal direction.

대표청구항 ▼

The invention claimed is: 1. A shaft of a tool with an adjustable length, the shaft comprising a first shaft section and a second shaft section which are attached to each other by adjusting means and are movable telescopically with respect to each other when the shaft length is adjusted, the adjust

The invention claimed is: 1. A shaft of a tool with an adjustable length, the shaft comprising a first shaft section and a second shaft section which are attached to each other by adjusting means and are movable telescopically with respect to each other when the shaft length is adjusted, the adjusting means for adjusting the shaft length comprising a sleeve fixed to the second shaft section and having a flange with an opening and an at least partly toothed spindle fixed to the first shaft section and having several successive teeth along the spindle, the first end of the spindle being taken through the opening of the sleeve, the sleeve and the spindle attach the first and the second shaft section adjustably to each other so that the sleeve and the spindle can be turned with respect to each other into a position preventing the adjustment of the shaft length where the flange is tightened between a pair of successive teeth and into a position allowing the adjustment of the shaft length where the spindle can move in the opening of the flange of the sleeve in the longitudinal direction, the adjusting means also comprising a locking member by means of which the sleeve and the spindle can be turned with respect to each other into a position preventing the adjustment of the shaft length or into a position allowing the adjustment of the shaft length where the spindle can move in the sleeve in the longitudinal direction. 2. A shaft of a tool according to claim 1, wherein the tool further comprises a handle, the locking member being integrated into the handle. 3. A shaft of a tool according to claim 1, wherein the toothing of the spindle consists of successive cogs transverse to the longitudinal direction of the spindle, the cogs covering at least partly the outer surface of the spindle. 4. A shaft of a tool according to claim 3, wherein the toothing of the spindle consists of cog pairs which are transverse to the longitudinal direction of the spindle and match on the opposite sides of the spindle, in which case the areas between the opposite cog pairs of the spindle form a cog-free area which extends along most of the width of the spindle in the longitudinal direction. 5. A shaft of a tool according to claim 1, wherein the first end of the spindle is provided with an end flange which prevents the spindle from moving out of the opening of the flange of the sleeve when the shaft length is adjusted. 6. A shaft of a tool according to claim 5, wherein the end flange at the first end of the spindle has end toothing which is turned at an angle with respect to the rest of the toothing so as not to allow the spindle out of the sleeve when the shaft length is adjusted. 7. A shaft of a tool according to claim 1, wherein the spindle body is provided with a limiter, which moves in a groove provided in the shaft section, limiting the movement of the spindle when it is turned in the sleeve, such that the extreme positions of the limiter define the position preventing the length adjustment of the spindle and the position allowing the adjustment of the shaft length. 8. A shaft of a tool according to claim 1, wherein the second shaft section forms an inner shaft section, which moves telescopically inside an outer shaft section formed by the first shaft section when the shaft length is adjusted, in which case the sleeve is placed at the end of the second shaft section towards the first shaft section and the spindle is in the first shaft section. 9. A shaft of a tool according to claim 1, wherein the sleeve provided in the second shaft section is the flange. 10. A shaft of a tool according to claim 1, wherein the tool further comprises a tool portion, the locking member being integrated into the tool portion. 11. A shaft of a tool with an adjustable length, the shaft comprising a first shaft section and a second shaft section which are attached to each other by adjusting means and are movable telescopically with respect to each other when the shaft length is adjusted, the adjusting means for adjusting the shaft length comprising a sleeve fixed to the second shaft section and having a flange with an opening and an at least partly toothed spindle fixed to the first shaft section and having several successive teeth along the spindle, the first end of-the spindle being taken through the opening of the sleeve, the sleeve and the spindle attach the first and the second shaft section adjustably to each other so that the sleeve and the spindle can be turned with respect to each other into a position preventing the adjustment of the shaft length where the flange is tightened between a pair of successive teeth and into a position allowing the adjustment of the shaft length where the spindle can move in the opening of the flange of the sleeve in the longitudinal direction, wherein the spindle is provided with a limiter, which moves in a groove provided in the first shaft section, limiting the movement of the spindle when it is turned in the sleeve, such that the extreme positions of the limiter define the position preventing the length adjustment of the spindle and the position allowing the adjustment of the shaft length. 12. A shaft of a tool according to claim 11, wherein the adjusting means further comprise a locking member by means of which the sleeve and the spindle can be turned with respect to each other. 13. A shaft of a tool according to claim 12, wherein the tool further comprises a handle, the locking member being integrated into the handle. 14. A shaft of a tool according to claim 11, wherein the toothing of the spindle consists of successive cogs transverse to the longitudinal direction of the spindle, the cogs covering at least partly the outer surface of the spindle. 15. A shaft of a tool according to claim 14, wherein the toothing of the spindle includes cog pairs which are transverse to the longitudinal direction of the spindle and match on the opposite sides of the spindle, in which case the areas between the opposite cog pairs of the spindle form a cog-free area which extends along most of the width of the spindle in the longitudinal direction. 16. A shaft of a tool according to claim 11, wherein the first end of the spindle is provided with an end flange which prevents the spindle from moving out of the opening of the flange of the sleeve when the shaft length is adjusted. 17. A shaft of a tool according to claim 16, wherein the end flange at the first end of the spindle has end toothing which is turned at an angle with respect to the rest of the toothing so as not to allow the spindle out of the sleeve when the shaft length is adjusted. 18. A shaft of a tool according to claim 11, wherein the second shaft section forms an inner shaft section, which moves telescopically inside an outer shaft section formed by the first shaft section when the shaft length is adjusted, in which case the sleeve is placed at the end of the second shaft section towards the first shaft section and the spindle is in the first shaft section. 19. A shaft of a tool according to claim 12, wherein the tool further comprises a tool portion, the locking member being integrated into the tool portion.