摘要:
The invention relates to a stapler (10) for stapling sheet material by means of staples (12), each staple (12) having two staple legs (14) and a staple crown (16) interconnecting the staple legs (14) and extending transversely to them, with an anvil arm (26) having a support plate (38) for placing the sheet material thereon, the anvil arm (26) carrying a cutting pad (40) with two cutting edges (42) for cutting off excess end parts of the staple legs (14), with a stapling unit (30) that is pivotally mounted relative to the anvil arm (26), which stapling unit (30) comprises a staple magazine (32) receiving the staples (12) in a row with the staple crowns (16) mutually abutting and being aligned parallel to each other and a driver (36) for pushing individual staples (12) with the free ends of their staple legs (14) first through the sheet material, with a base part (18), on which the anvil arm (16) is mounted movably towards it against a restoring force, and with two two-armed bending levers (50) pivotably mounted on the anvil arm (26) about a respective pivot axis (52), each bending lever (50) having a first lever arm (54) with a bending surface (56) for bending the staple legs (14) and a second lever arm (58), wherein upon approach of the anvil arm (26) to the base part (18), the second lever arms (58) are pivoted by action of the base part (18) about the pivot axes (52) and the bending surfaces (56) bend the staple legs (14) towards each other and cut off any excess end portions by pressing against the cutting edges (42). According to the invention, it is provided that the pivot axes (52) extend substantially perpendicular to the staple crowns (16) of the staples (12) received in the staple magazine (32) and that the second lever arms (58) have end portions (66) beginning at their free ends (64) which are arranged offset to one another in the axial direction of the pivot axes (52) so that they move past one another as the anvil arm (26) approaches the base part (18).
摘要:
A detector arrangement included in an electric circuit arrangement which includes a stand by shut down and which comprises a first power supply (1) which is connected to mains voltage and which converts the mains voltage to a first voltage adapted for an electric motor (5) included in the electric circuit, the first power supply being, by means of a supply conductor (3) across a switch (4) by which the electric circuit may be closed or opened, is connected with its positive pole (2) to said motor, and the motor is, by means of a return conductor (6), connected to the negative pole (7) of said first power supply, as well as a control circuit (15) which, on the one hand, is connected via a first signal conductor (16), to the first power supply and, on the other hand, to an included second power supply (1 1) which feeds the control circuit with a second voltage which is substantially lower than the first voltage and which, with its negative pole, is connected to the return conductor, and detector means for registering the state of the switch, said means being connected to the control circuit for control thereof by the first power supply between the energised state in which the switch is in the on position and in which the power supply emits voltage, and a shut down state in which the switch is in the off position and in which the power supply emits no voltage where the detector arrangement includes a resistor (17) and a first diode (18) which are connected in series and are included in a crosswire.
摘要:
Hammer tacker (1) for driving staples (7) into a workpiece, which tacker comprises a body (2) and a magazine (5) which is pivotably connected by connecting element (6) to the body in such a way that at the front edge of the tacker the magazine can move into and out of the body, and which magazine is provided with an endpiece (9) containing an elongate staple rail (10) which in the longitudinal direction of the magazine is slidably fitted to the magazine and is secured to the magazine by securing elements (13,14) and which, when fitted, leaves a gap (23) between its front edge (16) and the tacker's front edge (22), whereby the securing elements (13,14) take the form of a hook (13) integral with the staple rail/magazine (10, 5) and an aperture (14) on the magazine/staple rail (5, 10) and lockingly engage with one another when the staple strip is fitted to the magazine.
摘要:
A locking device in a stapler is adapted to lock a member displaceable along a bar in an optional displacement position, said member carrying a catch for the object to be stapled. The locking device has a locking element connected to the displaceable member and displaceable together with the same, said locking elements having a through hole, through which the bar extends. The hole is designed such that the locking element is tiltable along the bar between a front position, pinch position, in which the locking element portion defining the hole engages the bar and pinches the locking element thereto, and a rear position, free position, in which this hole-defining portion goes clear of the bar. The locking element is spring biased towards its pinch position. The locking device further has an operating handle which is mounted on the displaceable member and operable from the outside of the stapler, said operating handle being displaceable to a limited extent in relation to the displaceable member and essentially parallel with the bar in order to move, in connection with forwards displacement, the displaceable member and, thus, the catch forwards along the bar and in order to be engaged, in connection with backwards displacement, with the locking element and tilt the same towards its free position and thereby move the displaceable member and, thus, the catch backwards along the bar.
摘要:
Staple gun for driving staples into a workpiece, which gun includes a frame, arranged in which is a driver, which can be conveyed in an up and downward movement and which in the downward movement (N) executes a drive stroke in which the staple is driven and which can be conveyed by an activation member in the upward movement (U) to a highest height h, in which the activation member releases the driver for the execution of the drive stroke, and which driver is coupled to a first end of an elongated elastic member, which is tensioned when the driver is conveyed in the upward movement for execution of the drive stroke, and which is connected at a second end to a bearing pin assigned to the frame as well as a first breakpoint pin placed between the bearing pin and the driver at a first distance (a) from the bearing pin and around which the elastic member is bent and tensioned when the driver is moved in the upward movement, and a second breakpoint pin placed between the driver and the first breakpoint pin at a second distance (b) from the bearing pin and arranged so that it can be moved between a first position, in which it does not engage with the elastic member when this is moved by the driver in the upward movement, and a second position, in which it engages with the elastic member when the driver is moved in the upward movement and tensions the member, wherein the first distance (a) at which the first breakpoint pin is placed from the bearing pin is related to (h) as 1.6-2.0:1.
摘要:
Embodiments include a stapler with a built-in staple remover, the staple remover movable between a non-operational position where it is retracted in a stapler body of the stapler and locked by a locking device and an operational position where it is partly extended from the stapler body, the staple remover being acted upon by a first elastic unit which is tensioned when the staple remover is in the non-operational position and which pushes the staple remover to the operational position when the locking device is released in the non-operational position.
摘要:
Circuit-breaker arrangement (32) in an indicating arrangement (33) forming part of an electrically powered stapler (1). The stapler comprises a stapling head (2) and an anvil (3). The stapling head comprises an interchangeably fitted staple cassette (5) containing staple blanks (36), and the indicating arrangement. The circuit-breaker arrangement is so positioned that it is moved by the staple cassette from a first to a second position when the staple cassette is fitted to the stapling head and when the power supply via the indicating arrangement changes. The circuit-breaker arrangement (32) comprises an input line (22) and output line (23), of which at least the input line is dimensionally stable and resiliency flexible. The input line is impinged upon by an electrically non-conductive region (34) of the staple cassette when the latter is fitted to the stapling head, with the result that the line is moved against its resilient resistance so that the circuit-breaker arrangement switches from the first position to the second position. The resilient resistance returns the circuit-breaker arrangement to the first position when the cassette is removed from the stapling head.