CN1049471A

CN1049471A - File puncher

Info

Publication number: CN1049471A
Application number: CN90106951A
Authority: CN
Inventors: 罗兰德·武尔特耐尔; 赛格弗莱德·豪夫; 特奥多尔·普夫鲁格费尔德
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-08-14
Filing date: 1990-08-14
Publication date: 1991-02-27
Anticipated expiration: 2005-08-14
Also published as: WO1991002634A1; EP0487544A1; ES2051020T3; CN1025302C; DD297110A5; DE59004829D1; EP0487544B1

Abstract

A kind of file puncher of the present invention has a base and one and is installed on the side bearing plate of base, rotating pressure handle, and the bounce that this pressure handle overcomes a spring can move the punching head under it in base.The left and right sides of pressure handle is bowed downward to limit group, and the back hypotenuse of limit group and the back hypotenuse of side bearing plate are scissors shape overlap joint.The danger of tong when avoiding the card punch misoperation, the back hypotenuse of limit group and side bearing plate depart from its instantaneous intersection point in the whole slewing area of pressure handle spacing has at least to be pointed widely, and the angle of shear must not be less than 50 °.

Description

File puncher

The present invention relates to a kind of file puncher, it has a base and one and is installed on the base side bearing plate rotating pressure handle.The bounce that this pressure handle overcomes a spring can move the punching head under pressure handle in base.The left and right sides of pressure handle is bent downwardly becomes limit group, and the back hypotenuse of limit group and the back hypotenuse of side bearing plate are scissors shape overlap joint.

The file puncher of many this forms, when pressure handle is depressed, gap between the hypotenuse of limit group and side bearing plate can narrow down, at this moment, if operate inadequately skillfully or not at that time, other position of finger or hand can be advanced in these gaps by folder and weigh wounded, and this situation mainly occurs in and is placed on the card punch that is used to the documents and materials punching on the desk.

Therefore, task of the present invention is, the known file puncher of the above-mentioned type improved, so that the danger that also can avoid injury when the card punch improper use.

A kind of file puncher of the present invention, having a base and one is installed on the base two-side supporting plate, can be around the pressure handle of rotating shaft rotation, the elastic force that this pressure handle overcomes a spring can move the punching head under pressure handle in base, the left and right sides of pressure handle is bent downwardly becomes limit group, and the back hypotenuse of limit group and the back hypotenuse of base side bearing plate intersect an angle of shear.It is characterized in that: the back hypotenuse of limit group and side bearing plate departs from its instantaneous intersection point in the whole slewing area of pressure handle spacing has at least finger wide, and the angle of shear when not depressing pressure handle is between 80 ° and 180 °; When depressing pressure handle, then between 50 ° and 110 °, the hypotenuse place rounding of side bearing plate and limit group, and have smooth top layer, when depressing pressure handle, the spacing between pressure handle and the base has digit at least, and two finger beams are preferably arranged.The angle of shear at most only reduces 25 ° when depressing pressure handle.The back hypotenuse of limit group and/or side bearing plate has the curved profile of smooth protrusion.The back hypotenuse of limit group has the circular contour coaxial with the rotating shaft of pressure handle.The angle of shear and/or intersection point remain unchanged in the whole slewing area of pressure handle basically.The hypotenuse of side bearing plate and limit group is out of shape rounding by punching press.The rounding at smooth top layer and/or hypotenuse position, back is realized by coating the powdery lacquer.Be provided with the finger-type block that stops limit group in the back hypotenuse scope of side bearing plate, the upper surface of block constitutes a braking surface to the pressure handle that presses down, and two upper surfaces have profile toward each other, that protrude, bend inwardly and downwardly then from the outward flange of its limit group place side.The bottom of curved surface shape form toward each other, inside, and then downward inclined-plane.

The main foundation of solution of the present invention is: as long as the angle of shear surpasses certain value in the whole slewing area of pressure handle, so, when pressure handle presses down, stretching into the interior finger of two hypotenuse crossover range of limit group and side bearing plate could avoid weighing wounded when two hypotenuses relatively move, then correspondingly proposed following suggestion according to the present invention: the back hypotenuse of limit group and side bearing plate departs from instantaneous intersection point in the whole slewing area of pressure handle interval has digit at least, the angle of shear when not depressing pressure handle is 80 ° to 180 °, when depressing pressure handle then be 50 ° to 110 °, the hypotenuse position rounding of side bearing plate and/or limit group, and have smooth top layer.When depressing pressure handle, the distance between pressure handle and the base has at least finger wide.

If when the angle of shear was acute angle, the angle of shear when depressing pressure handle at most only reduced 25 ° as much as possible.Prove in this case and particularly advantageously be: the hypotenuse of limit group and/or side bearing plate have one smooth, protrude, preferably circular external shape, and the angle of shear and/or intersection point almost remain unchanged in the whole slewing area of pressure handle.

In weighing process wounded, play main effect because adhere to friction, so especially at the angle of shear hour, side bearing plate and limit group at least will be by the crimp rounding at their hypotenuse position, and/or will coat powdery and coat with lacquer for making the hypotenuse rounding and obtaining smooth top layer.

In addition, be important for the safety operation file puncher a bit below: when depressing pressure handle, the distance of pressure handle and base preferably will have two finger beams.

According to another optimal design of the present invention, the back hypotenuse position of side bearing plate is provided with the finger-type block of helping the back side to contact with the limit, their upper surface constitutes a braking surface to the pressure handle that presses down, two upper surfaces have toward each other, from their outward flange of limit group place side protrude, reclinate inwardly profile then, the bottom of end face forms again toward each other, inside lower inclined plane.Take this measure just can to accomplish: when pressing down pressure handle since carelessness put in the finger of limit, side group can be to lower slider on curved surface, and be unlikely to be sandwiched between two blocks.

The invention will be further described by the represented structure example of several schematic diagrames below.They are:

Fig. 1 a: side view of the card punch that a kind of angle of shear is variable;

Fig. 2 a: side view of the card punch that a kind of angle of shear is constant;

Fig. 3: a kind of back perspective view of card punch;

Fig. 4: the sectional view of Fig. 1 card punch side bearing plate and limit group overlapping part.

File puncher shown in the figure mainly by a base 10 and one be installed on the side bearing plate 12 of base 10, can constitute around axle 14 rotating pressure handle 16 between two terminal positions.Pressure handle 16 has two reclinate limits to help 18, and the lateral overlap with adjacent side bearing plate 12 is helped on the limit.The following hypotenuse 20 of limit group back intersects at the K point with the back hypotenuse 22 of sides adjacent support plate 12, forms an open backward angle of shear α.According to

hypotenuse

20,22 different with respect to the position of run-on point 14 and profile, in the process that pressure handle 16 presses down, intersection point K moves along tilting section 22 more or less, and angle of shear α also changes more or less.

With regard to the situation of structure example shown in Figure 2,, can when pressing down pressure handle, intersection point K and angle of shear α be remained unchanged because hypotenuse 20 has the circular contour coaxial with rotating shaft 14.When intersection point K moves when changing with angle of shear α, below some is important for avoid tong at infall: promptly angle of shear α must not be less than 50 ° in the whole slewing area of pressure handle 16, and the spacing that

hypotenuse

20 and 22 departs from intersection point has finger wide (Fig. 1) at least.

As shown in Figure 4, scribble the powder enamelled coating 32,34 of high sliding in side bearing plate of making by sheet metal 12 and the limit group 18, the thickness of powder enamelled coating will be greatly to making the limit help 18 seamed edge 20 be coated with circular.The further effect of Tu Yuanyou at 36 pairs 20 places, formed punching press inclined-plane when punching press, iron plate limit of limit group 18.

With regard to structure example shown in Figure 3, in the scope of side bearing plate 12 back hypotenuses 22, respectively there is one to stop that the limit helps 18 downward finger-type blocks 24, their upper surface 26 constitutes a braking surface for the pressure handle 16 that has pressed down.Two end faces 26 have toward each other, from outward flange 28 projectioies of its limit group place side, reclinate then profile, lower inclined plane 30 is toward each other formed at the bottom of this profile.

Claims

1, a kind of file puncher, has the pressure handle that a base and are installed on the base two-side supporting plate, can rotate around rotating shaft, the elastic force that this pressure handle overcomes a spring can move the punching head under pressure handle in base, the left and right sides of pressure handle is bent downwardly becomes limit group, and the back hypotenuse of limit group and the back hypotenuse of base side bearing plate intersect an angle of shear.It is characterized in that: the back hypotenuse (20,22) of limit group (18) and side bearing plate (12) departs from its instantaneous intersection point (K) in the whole slewing area of pressure handle (16) spacing has at least finger wide, and the angle of shear (α) when not depressing pressure handle (16) is between 80 ° and 180 °; When depressing pressure handle (16), then between 50 ° and 110 °, the hypotenuse (20 of side bearing plate (12) and limit group, 22) locate rounding, and have smooth top layer, when depressing pressure handle (16), spacing between pressure handle (16) and the base (10) has digit at least, and two finger beams are preferably arranged.

2, file puncher according to claim 1 is characterized in that: the angle of shear (α) at most only reduces 25 ° when depressing pressure handle.

3, file puncher according to claim 1 and 2 is characterized in that: the back hypotenuse (20,22) of limit group (18) and/or side bearing plate (12) has the curved profile of smooth protrusion.

4, file puncher according to claim 3 is characterized in that: the back hypotenuse (20) of limit group (18) has the coaxial circular contour of rotating shaft (14) with pressure handle (16).

5, according to each the described file puncher in the claim 1 to 4, it is characterized in that: the angle of shear (α) and/or intersection point (K) remain unchanged in the whole slewing area of pressure handle (16) basically.

6, according to each the described file puncher in the claim 1 to 5, it is characterized in that: the back hypotenuse of side bearing plate (12) and limit group (18) is out of shape rounding by punching press.

7, according to each the described file puncher in the claim 1 to 6, it is characterized in that: the rounding at smooth top layer and/or hypotenuse position, back is realized by coating the powdery lacquer.

8, according to each the described file puncher in the claim 1 to 7, it is characterized in that: be provided with the finger-type block (24) that stops limit group (18) in back hypotenuse (22) scope of side bearing plate (12), the upper surface of block (26) constitutes a braking surface to the pressure handle (16) that presses down, and two upper surfaces (26) have profile toward each other, that protrude, bend inwardly and downwardly then from the outward flange (28) of its limit group place side.

9, file puncher according to claim 8 is characterized in that: toward each other, inside and then downward inclined-plane (30) is formed at the bottom of finger-type block end face (26) curved surface shape.