CN1034798C - stapler - Google Patents

Abstract

The invention relates to a stapler having a base (14), a staple magazine (22) and a top plate (36), a staple pressing plate (32) being arranged in the top plate (36). A brake block (46) is arranged on the nail box cover plate (31). The cover (34) has an end wall (42) whose lower edge reaches the brake shoe (46), and on the inner surface of which two side faces are arranged facing each other, respectively on both sides of the brake shoe, facing the flange (58) in front of the broad side of the presser foot (32). It closes the slot between the end face wall (42) and the stop block (46) for passage of the staple pressing plate (32).

Description

stapler

The invention relates to a stapler, which has a base; a staple box that can swing around a horizontal axis at the rear of the base; a staple box that can swing around a horizontal axis relative to the staple box and the base, with There is a top cover or a top plate made like a top cover; there is a support arm placed on the top plate like a pendulum block, which can be pressed into the staple output slot of the staple box and move toward the direction of staple output through the swing of the top plate There is also a nail box set on the nail box or the nail box cover on the top plate, which passes through the long hole parallel to the moving direction on the nail box from the back to the front, and is placed on the top plate and the nail box or the nail box cover. Under the action of the spring between the plates, withstand the lower limiting edge of the slotted hole, and protrude from the brake block in front of the broadside of the nail plate with its end.

In a stapler driven from above, it is arranged to be guided by the nail box thrust guide rod, supported by a spring, and push the nail pushing plate toward the head, while the top plate can be moved from the closed position to the nail box and the base relative to the nail box and the base. The open nail entry position swings about 180°, and drives the nail pushing plate to move when swinging, and another one can swing around the horizontal axis under the action of a spring, and presses the nail box from above in the closed position of the top plate, and the nail box with the brake block cover plate. When the top plate is opened, the cover plate of the nail box is lifted from the nail box through the brake block that it hangs on the nail pressure plate, and is driven to the nail-in position. When the nail box cover plate swings against the force of the spring relative to the top plate at this position, the brake block then rises from the lower edge of the nail plate elongated hole. There is a danger that the nail presser will pivot around its pivot axis beyond the range of action of the stopper and loosen from the magazine cover, with the result that the stapler loses its function. In order to avoid this situation, it was once suggested that the brake block be made into a positioning block that catches the lower edge and both sides of the slotted hole. Unavoidably, however, there will be incorrect handling which will result in partial removal of the nail plate, the nail box cover and the springs cooperating with them.

In a stapler with a carriage for holding staples, the staple magazine has a thrust guide for the spring-loaded pusher plate guide, and a thrust guide that is movable parallel to the pusher plate and can be positioned In the nail box, there is a sliding frame with a nail groove on the end surface, which is used for placing staples. The stoppers are fixedly connected to the magazines or to a magazine cover fixedly connected to them. When the carriage is closed, the lower edge of the nail plate that is pressed in the nail outlet groove is surrounded by the upper edge of the carriage, and it will be disengaged when the carriage is opened. Therefore, there will be a danger that the nail plate will be released from the brake if the operation is not correct. Depending on the configuration, the nail plate may fall from its support arm and be lost. In addition, the spring-loaded connection between the magazine cover and the top plate may separate, rendering the entire stapler unusable. If additional precautions are not taken, a spring loosely located between the top box cover and the top plate can also be lost.

From this point, the task of the present invention is: to improve the known stapler that enters the nail or has the slide bracket to hold the nail, so that the nail box or the nail box cover plate and the top plate can be made by simple means. There is no undesired loosening of the connection with the nail plate.

In order to solve this object, the combined features described in claim 1 are proposed, further advantageous designs and configurations of the invention can be found in the relevant claims.

The idea of the present invention is that: the nail plate can be prevented from loosening inadvertently from its installation position in a way, that is, the top cover is provided with an end wall whose lower edge reaches near the stopper or overlaps with its end face , it has at least one setting near its lower edge on the inner side facing the brake block, on both sides of the brake block, and on the flange in front of the broadside of the nail plate. The distance between the free ends of the projections with sides facing each other and the stopper should be chosen to be smaller than the thickness of the nail plate material. It is preferred that the flange and the stopper overlap laterally in the region of their ends. With this measure it is possible to ensure that there is no gap between the brake pad on the one hand and the flange of the top cover end wall on the other hand for the passage of the nail plate.

A better design of the present invention is that the top cover is provided with two side faces facing each other, and flanges on both sides of the brake block are respectively provided.

In order not to affect the smooth movement of the nail-pressing plate even if the usual manufacturing tolerances occur, the support arm of the pendulum presents two guide grooves on both sides, pointing in the longitudinal direction, to receive the nail-pressing plate from the The swing arm protruding from the side has a certain length gap, and there are at least two stoppers on the inner side of the top cover end wall on the guide section of the guide groove, toward the front side of the wide side of the nail plate, to limit the longitudinal gap. plate.

The invention will be explained in more detail below using two structural examples represented schematically. They are:

Figures 1 and 1a are longitudinal sectional views of the stapler driven from above

Figure 1a Figure 1 Partial enlarged view.

Fig. 2 Longitudinal sectional view of a stapler with a nail holder

Fig. 3 Fig. 2 The partially cut-away view of the stapler

Figure 4 Figure 2 Horizontal sectional view of the end face of the top plate

The stapler shown in Fig. 1 and 1a is mainly made up of following parts by the stapler that enters nails from above: an elongated one has an anvil block 10 at the front, and a base 14 of a support 12 at the rear; Can surround transverse axis 16 on the top, the nail box 22 that swings toward the direction of anvil 10 with its head 20 from the power of counterspring 18 from the static position higher than base; Head 20 direction moves, has the nail pushing plate 28 of spring support; And one relative to nail box 22 and base 14, can swing about 180 ° top plate 36 from closing position to the nailing position that opens around transverse axis 16, drives when swinging Nail pushing plate 28 swings, and it has the nail box 22 that a spring 30 supports, also has a nail pressing plate 32 matching with nail box 22 head 20, and a top cover 34 is arranged, and the top of nail pressing plate 32 is with its two The lateral swing arms 38 rest on longitudinally playable support arms 40 that are limited by the guide slots that open at the edges. Longitudinal clearance is subjected to the position-limiting baffle plate 44 that places on the end face wall 42 of cover plate 34 toward the broadside front side direction of nail press plate 32 in the guide slot and can not move forward, so that swing arm 38 cannot move forward from The support arm 40 slides down forward. A forward protruding brake block 46 is set on the nail box cover plate 31, and it passes through the long hole 48 on the nail plate 32 from the back to the front and holds it in the same direction as the moving direction, and it is formed under the action of the spring 30. A stop for the lower limit edge 50 of the elongated hole 48 in the raised end position. The nail box cover plate 31 engages in the gap 52 of the edge opening of the nail box 22 from top to bottom with the protruding part of its stop block 46 beyond the nail pressure plate 32 . In this position, the nail pressing plate 32 acts in the nail outlet groove 54 of the nail box 22 .

When the nail is to be packed into the nail box 22, the top plate 36 can be improved, together with the nail box cover plate 31 and the nail pressing plate 32, the brake block 46 is disengaged from the positioning gap 52, and the nail box 22 is lifted away, in order to avoid the nail pressing plate 32 will slide down from the brake block 46 due to the improper operation of raising the nail box cover plate 31 when the top plate is in the raised position, and two flanges 58 on both sides are set near the lower edge of the top cover end wall 42, Its front end faces the broadside direction of the nail pressing plate 32 , and closes the through gap between the stop block 46 and the inner surface of the end wall 42 .

In the structural illustration shown in Fig. 2, the nail box 22 has a slide bracket 60 for placing the staples, which can move on the guide rod of the nail box, and can snap and be positioned on the staples in the pushed-in terminal position. box 22. The stop block 46 is arranged on the non-movable nail box cover plate 31 ′ of the nail box 22 , and protrudes through the long hole 48 of the nail pressing plate 32 from back to front. In order to prevent the nail presser plate 32 from slipping out accidentally through the gap between the stopper 46 and the top cover end wall, near the lower edge of the top cover end wall 42, facing the direction of the broadside of the nail presser plate 32, inwardly protruding Flange 58.

To sum up, the main points are: the present invention relates to a stapler, which has a base 14; a nail box 22 that can swing around the transverse axis 16 on the base 14 and a nail box that can swing around the transverse axis relative to the nail box 22 and the base 14; 16 swings, have a top cover 34 or make the same top plate 36 as top cover. In the top plate 36, a nail pressing plate 32 is placed on the supporting wall 40 with the edge opened like a pendulum. Move in the nail-out direction. In the nail box cover plate 31, 31 ', there is a brake block 46, which passes through the elongated hole 48 parallel to the moving direction on the nail pressing plate 32 and protrudes forward and is blocked by the lower limit edge 50 of the elongated hole 48 . In order to ensure that the nail pressing plate 32 can also stay in the installation position when the nail box 22 is re-stapled, the top cover 34 has an end wall 42 whose lower edge reaches the stopper 46, and there are two separate parts on the inner surface of the end wall. On both sides of the brake shoe, facing the broad front side of the nail holder 32, is a flange 58 which closes the gap between the end wall 42 and the brake shoe 46 for the passage of the nail holder 32 .

Claims (5)

1. There is a stapler with a base (14); it has a staple box (22) that can swing around the horizontal axis (16) at the rear of the base; there is a staple box (22) that can swing around the horizontal axis (16) ) and the base (14) swing, with a top cover (34) or a top plate (36) made as the top cover; The nail outlet groove (54) of the nail box (22) and the nail pressure plate (32) that can move toward the nail outlet direction by the swing of the top plate (36); there is also a nail box (22) or a nail box cover plate (31), pass a long hole (48) parallel to the direction of movement on a nail pressing plate (32), stretch out from back to front, and be on top plate (36) and nail box (22) or nail box cover plate Under the effect of the spring (30) between (31), it withstands the lower limiting edge (50) of the slotted hole (48), and its end protrudes outside the brake block on the wide side front side of the nail plate (32). The feature is: the top cover (34) is presented as an end wall (42) that reaches near the brake block (46) with its lower edge (56) or overlaps with its end face, and it faces at least the inner side of the brake block (46). There is a flange (58) near its lower edge (56), disposed on either side of the brake block, facing forwardly of the wide edge of the nail presser plate (32). 2. The stapler according to claim 1, characterized in that: the distance between the ends of the flanges (58) facing each other and the stopper (46) is smaller than the thickness of the nail plate (32) material. 3. The stapler according to claim 1, characterized in that the ends of the flange (58) and the stopper (46) overlap laterally. 4. The stapler according to claim 1, characterized in that: the end wall (42) of the top cover has two flanges (58) facing each other, and the two sides of the brake block (46) are respectively provided. 5. The stapler according to claim 1, characterized in that: the support arm (40) presents two guide grooves on the top plate (36) along the length direction, which are separately arranged on both sides, for receiving the slave plate (32) The swing arm (38) protruding from the side has a certain gap in the longitudinal direction, and the inner side of the top cover end wall (42) has at least two on the guide section of the guide groove, wide towards the nail plate (32). The limit baffle (44) that stretches out in the direction of edge front.

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