Quick-release clamp for releasably attaching an instrument, especially a percussion instrument, to a stand

Abstract

A quick-release clamp for releasably attaching an instrument, in particular a percussion instrument, to a stand includes a passage opening for the stand, at least one movable clamping jaw for changing a cross-section of the passage opening, an operating element for influencing a position of the clamping jaw, and a housing. In the rest position of the at least one clamping jaw there is a form-fit connection between the at least one clamping jaw, the operating element and the housing to prevent the movement of the clamping jaw.

Claims

1. A quick-release clamp (1) for releasably attaching an instrument to a stand, the quick-release clamp (1) comprising: a passage opening (14) for the stand; at least one movable clamping jaw (12) for changing a cross-section of the passage opening (14); an operating element (13) for influencing a position of the at least one clamping jaw (12); and a housing (11), wherein the at least one clamping jaw (12) is adjustable between a released position and a rest position, wherein in the rest position of the at least one clamping jaw (12) there is a form-fit connection between the at least one clamping jaw (12), the operating element (13) and the housing (11) to prevent movement of the at least one clamping jaw (12); wherein a spring element (15) is arranged between the housing (11) and the operating element (13) to hold the operating element (13) in a position through which the at least one clamping jaw (12) can be brought into the rest position and/or locked and no force input directly acts from the spring element (15) onto the at least one clamping jaw (12); and wherein the operating element (13) is movable relative to the housing (11) and the at least one clamping jaw (12) to separate the form-fit connection between the at least one clamping jaw (12), the operating element (13) and the housing (11) and to enable the at least one clamping jaw (12) to move into the released position.

2. The quick-release clamp according to claim 1, wherein the form-fit connection in the rest position of the at least one clamping jaw (12) is effected without action of a spring force (F.sub.F) by the spring element (15).

3. The quick-release clamp according to claim 1, wherein the form-fit connection between the at least one clamping jaw (12), the operating element (13) and the housing (11) is suitable for deriving a holding force (F.sub.H) from a surface of the at least one clamping jaw (12) onto the housing (11).

4. The quick-release clamp according to claim 1, wherein the at least one clamping jaw (12) comprises at least two clamping jaws (12); and wherein the form-fit connection between the operating element (13), the housing (11) and at least two clamping jaws (12) in the rest position is effected by a single operating element (13).

5. The quick-release clamp according to claim 4, wherein the at least two clamping jaws (12) can be rotated about a common axis (122) which extends parallel to the passage opening (14).

6. The quick-release clamp according to claim 4, wherein the operating element (13) has a first portion for producing the form-fit connection (131); and wherein the operating element (13) has a second portion (132) by which, when the operating element (13) is moved, the at least two clamping jaws (12) are moved relative to the housing (11) and the cross-section of the passage (14) between the at least two clamping jaws (12) is adjusted.

7. The quick-release clamp according to claim 1, wherein in the rest position the cross-section between the at least two clamping jaws (12) is minimal.

8. The quick-release clamp according to one of claim 4, wherein movement directions of the operating element (13) and the at least two clamping jaws (12) are not parallel to one another when the cross-section changes.

9. The quick-release clamp according to claim 4, wherein, in the rest position, a spring force (F.sub.F) between the housing (11) and the operating element (13) is perpendicular to a holding force (F.sub.H) which can be transmitted to the housing by the form-fit connection.

10. The quick-release clamp according to claim 1, wherein the at least one clamping jaw (12) has a clamping surface (121) formed as an additional layer with a structured surface.

11. The quick-release clamp according to claim 10, wherein the structured surface has notches perpendicular to the passage opening.

12. A system, comprising: the quick-release clamp (1) as in claim 10; and a stand for an instrument, wherein the clamping surface (121) of the at least one clamping jaw (12) and part of a surface of the stand have structures that are complementary to one another.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is an external view of a quick-release clamp.

(2) FIG. 2 is a horizontal section through the quick-release clamp in rest position.

(3) FIG. 3 is a horizontal section through the quick-release clamp in the released position.

DETAILED DESCRIPTION

(4) The invention is described in detail below with reference to the figures mentioned in the form of exemplary embodiments. In all figures, the same technical elements are provided with the same reference symbols.

(5) FIG. 1 shows an exterior view of a quick-release clamp 1. A round outer housing 11, a passage opening 14 for a stand 2 and an operating element 13 are shown in a rest position. In the passage opening 14, a part of a clamping jaw 12 can be seen, which reduces the cross-section of the passage opening 14 in the quick-release clamp 1.

(6) FIG. 2 shows a horizontal section through a quick-release clamp 1. The quick-release clamp 1 and its operating element 13 are in the rest position. A spring 15 in the form of a helical spring is arranged between the housing 11 and the operating element 13 and pushes the operating element 13 outwardly against the wall of the housing 11. The two clamping jaws 12 reach around the passage opening 14 and include an additional structured layer on the respective clamping surface 121. The clamping jaws 12 themselves are both mounted pivotably about an axis 122 which extends parallel to the passage opening 14.

(7) In the rest position shown in FIG. 2, the cross-section of the passage opening 14 is reduced by the two clamping jaws 12 and there is a form fit between the clamping jaw 12, operating element 13 and housing 11. Moving the operating element in direction B towards the passage opening 14 in housing 11 shifts the portion of the operating element 13 which produces the form fit relative to the clamping jaw 12 and the housing 11 and thus releases the form fit. The clamping jaw 12 can then rotate about the pivot axis 122 and thereby enlarge the cross-section and release a possible connection to a stand.

(8) FIG. 3 shows a quick-release clamp 1 with the operating element 13 in the released position. Due to the corresponding design of the operating element 13, both clamping jaws 12 move at the same time during the movement B of the operating element 13. The movement K of the clamping jaws 12 about the bearing or axis 122 of the clamping jaws 12 is only possible when the corresponding form fit has been released. The operating element 13 then pushes both clamping jaws 12 outwardly so that the cross-section in the passage opening 14 increases. A possible connection with a stand is thereby released.

REFERENCE NUMBER

(9) 1 Quick-release clamp 11 Housing 12 Clamping jaw 121 Clamping surface 122 Axis of rotation of the clamping jaws with bearing 13 Operating element 131 Form-fit area 132 Release area 14 Passage opening 15 Spring element B Direction of movement of operating element K Direction of movement of the clamping j aw F.sub.F Spring force F.sub.H Holding forces