초록 ▼

A spring clamp includes a first body which comprises a gripping portion and a clamping portion, a second body which comprises a gripping portion and a clamping portion, a first pivot element which pivotally connects the first body and the second body, and a locking mechanism which comprises at least

A spring clamp includes a first body which comprises a gripping portion and a clamping portion, a second body which comprises a gripping portion and a clamping portion, a first pivot element which pivotally connects the first body and the second body, and a locking mechanism which comprises at least a pair of friction pair components. The first friction pair component is arranged on the first body, and includes a first friction pair element; and the second friction pair component is arranged on the second body, and includes a second friction pair element. The first and second friction pair elements rub against each other to effect the locking function. The rubbing of the friction pair elements occurs mainly in the plane perpendicular to the first pivot element axis.

대표청구항 ▼

1. A spring clamp, comprising: a first body which includes a gripping portion and a clamping portion;a second body which includes a gripping portion and a clamping portion;a first pivot element which pivotally connects the first body and the second body at a pivot joint for pivotal movement about a

1. A spring clamp, comprising: a first body which includes a gripping portion and a clamping portion;a second body which includes a gripping portion and a clamping portion;a first pivot element which pivotally connects the first body and the second body at a pivot joint for pivotal movement about a first pivot element axis; anda locking mechanism, which comprises at least a pair of friction pair components; wherein: a first friction pair component of the pair is provided on the first body and includes a first friction pair element; anda second friction pair component of the pair is provided on the second body and includes a second friction pair element;the friction pair components arranged in pairs has the first friction pair element and the second friction pair element therein, which form a pair of friction pair elements and effect a locking function through rubbing against each other, wherein the rubbing of the friction pair elements mainly occurs in a plane perpendicular to the first pivot element axis; and wherein the first friction pair element comprises an elongated sheet, having at least one main surface located in a plane substantially perpendicular to the first pivot element axis as a friction surface contacted with the second friction pair element. 2. The spring clamp according to claim 1, wherein the locking mechanism further comprises an unlocking mechanism to release the locking function between the first and second friction pair element. 3. The spring clamp according to claim 2, wherein the unlocking mechanism further comprises an operation handle, which can be handled by a finger pressing the operation handle, so that the unlocking mechanism releases the locking function between the first and the second friction pair element. 4. The spring clamp according to claim 1, wherein the first friction pair component is fixedly provided on the first body. 5. The spring clamp according to claim 3, wherein the second friction pair component is fixedly provided on the second body. 6. The spring clamp according to claim 3, wherein the second friction pair element comprises at least one needle. 7. The spring clamp according to claim 6, wherein the second friction pair component comprises: a clamp block which the first friction pair element can penetrate, the clamp block is provided with strip holes on its opposite sides and in the strip holes a needle is provided which has one end at least exposed out of the strip holes; after the first friction pair element penetrates the clamp block, an angle is formed between the strip hole and the first friction pair element to control two states of contact or disengagement of the needle of the strip hole and the first friction pair element; anda needle fixing ring provided on an outside of the clamp block by an elastic member in order to limit axis direction degree of freedom of the needle, the needle can move in the strip hole in a direction of contacting the first friction pair element by a role of the elastic element;a working portion of the operation handle during rotating makes the needle in the strip hole move in a direction of disengaging from the first friction pair element. 8. The spring clamp according to claim 3, wherein the second friction pair element comprises at least one wedge block. 9. The spring clamp according to claim 8, wherein the second friction pair component comprises a clamp block which the first friction pair element can penetrate, the clamp block is provided with a wedge block guide channel on its opposite sides and in the wedge block guide channel a wedge block is provided which has at least one end exposed out of the wedge block guide channel; after the first friction pair element penetrates the clamp block, an angle is formed between the wedge block guide channel and the first friction pair element to control two states of contact or disengagement of the wedge block of the wedge block guide channel and the first friction pair element; and a wedge block fixing ring provided on an outside of the clamp block by an elastic member in order to limit axis direction degree of freedom of the wedge block, the wedge block can move in the wedge block guide channel in a direction of contacting the first friction pair element by a role of the elastic element;a working portion of the operation handle during rotating makes the wedge block in the wedge block guide channel to move in a direction of disengaging from the first friction pair element. 10. The spring clamp according to claim 1, wherein the second friction pair element comprises at least one eccentric cam. 11. The spring clamp according to claim 10, wherein the second friction pair component comprises: a clamp block which the first friction pair element can penetrate; anda cam pivotedly provided on the clamp block by a torsion spring; after the first friction pair element penetrates the clamp block, rotation of the cam providing two states of contact or disengagement of the cam and the first friction pair element;an operation handle integrally molded with the cam, and the rotating of the operation handle making the cam disengage from the first friction pair element. 12. The spring clamp according to claim 1, wherein the gripping portions and the clamping portions of the first and second body are located on alternate sides of the pivot joint of the first body and second body, respectively. 13. The spring clamp according to claim 1, wherein the gripping portions and the clamping portions of the first and second body are located on a same side of the pivot joint of the first body and second body. 14. The spring clamp according to claim 3, wherein a half-open cavity is provided in the first body or in the second body. 15. The spring clamp according to claim 14, wherein at least part of the first friction pair component or the second friction pair component is disposed in the half-open cavity. 16. The spring clamp according to claim 15, wherein the operation handle may be provided in the half-open cavity and at least part of the operation handle is located outside the half-open cavity when clamping. 17. The spring clamp according to claim 1, wherein the first friction pair element has a shape a of circular arc. 18. The spring clamp according to claim 1, wherein thickness of the first friction pair element is substantially uniform. 19. The spring clamp according to claim 1, wherein the clamping portion of the first body or the second body is provided with a movable clamp. 20. The spring clamp according to claim 1, wherein part or all of the first body and the second body is coated with a soft coating layer. 21. The spring clamp according to claim 1, wherein a torsion spring is provided for the first pivot element, which connects the first body and the second body together, supplying a tension between the first body and the second body.