| CPC B21J 15/386 (2013.01) [B21J 15/043 (2013.01); B21J 15/383 (2013.01)] | 8 Claims |
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1. A hand riveter, characterized by comprising a first handle, a second handle, and a clamping and pulling mechanism, wherein the second handle is capable of rotating around a pivoting shaft with respect to the first handle;
the second handle is separated into a force applying end and a warping end by the pivoting shaft, and the warping end and the clamping and pulling mechanism are connected via a connecting shaft;
when the force applying end of the second handle is rotated and opened with respect to the first handle, the warping end of the second handle drives the clamping and pulling mechanism to move in a rivet-driving direction;
when the force applying end of the second handle is rotated and closed with respect to the first handle, the warping end of the second handle drives the clamping and pulling mechanism to move in a rivet-pulling direction; and
a relative position between the connecting shaft and the pivoting shaft is provided as:
a first force bearing point is located at an axis of the connecting shaft, a second force bearing point is located on the second handle, and when the first handle and the second handle are closed, a largest grip distance position exists, and a ratio of a distance between the first force bearing point and an axis of the pivoting shaft to a distance between the second force bearing point and the axis of the pivoting shaft is 1:16-1:25;
or
a distance between the axis of the connecting shaft and the axis of the pivoting shaft is 8-12 mm;
wherein the clamping and pulling mechanism comprises a pulling sleeve, and the pulling sleeve is connected to the warping end via the connecting shaft and drives the clamping and pulling mechanism to move; and at an interference area, which refers to a position where the pulling sleeve is spatially closest to the pivoting shaft, the pivoting shaft is provided with a space avoidance groove;
wherein a position at which the force applying end of the second handle is maximumly rotated and opened with respect to the first handle is a first position, a position at which the force applying end of the second handle is maximally closed with respect to the first handle is a second position, a line penetrating through the axis of the pivoting shaft and being perpendicular to a moving direction of the clamping and pulling mechanism is an auxiliary line, and the auxiliary line is in the same plane as the first handle, the second handle and the axis of the pivoting shaft; and at the first position, an angle between the auxiliary line and a line connecting centers of the connecting shaft and the pivoting shaft is a first angle, and at the second position, an angle between the auxiliary line and the line connecting the centers of the connecting shaft and the pivoting shaft is a second angle, and the first angle and the second angle are on two sides of the auxiliary line.
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