JPH0425351Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application The present application relates to a paper clipping tool for clamping paper sheets such as documents.

BACKGROUND TECHNOLOGY Conventionally, a presser member is provided at the front and back positions of a base plate and is moved up and down in parallel by a crankshaft, and at the center of the base plate, a shaft is inserted between a cut and raised claw plate and a wall plate. Attach the base end of the handle to this so that it can rotate freely, fit a coil spring into it, extend one end of this spring and lock it in the groove in the handle, and fold the other end of the coil spring into a crank shape. A paper clipping device which is bent and has its crank portion attached to the presser member and is configured to hold paper between the base plate and the presser member by pushing down the handle against a spring is known, for example, from the Utility Model Publication Act of 1973. It is publicly known from Publication No.-25679 and the like.

Problems to be Solved by the Invention Incidentally, according to the conventionally known paper clipping tool described above, the paper is pressed by the entire lower edge of the presser member, but the entire lower edge of the presser member presses the paper sheet. It is mechanically extremely difficult to press the presser evenly, especially since the biasing force of the coil spring is applied to the center of the presser member.
Paper sheets tend to be strongly pinched between the center part of the holding member and the base plate, and therefore, the paper sheets tend to rotate around the center part, and the paper sheets that are pinched during handling tend to be tightly pinched. There was a problem with the leaves falling off.

Means for Solving the Problem Therefore, in the present application, by rotating the handle, a presser member having a downward U-shaped cross section supported by the crankshaft is lowered against a spring, and is moved between the base plate and the presser member. Provided is a paper clamp configured to clamp paper sheets, characterized in that the lower edges of the front and rear ends of the left and right side wall plates of the presser member are formed lower than the intermediate lower edges thereof. This solves the above-mentioned inconvenience.

Function: When a sheet of paper is to be held, the sheet of paper is placed on the base plate and then the handle is rotated so that the holding member descends. Then, the spring is wound up and the holding member descends to clamp the paper sheet between it and the base plate. The presser member comes into contact with the top surface of the leaf, and then the presser member lowers uniformly, and the middle part of the side wall board comes into contact with the top surface of the paper leaf.
At this point, the paper sheet is strongly clamped, and there is no risk of the paper sheet rotating.

Example Embodiments of the present application will be described in detail below with reference to the drawings.

Reference numeral 1 designates a base plate, one edge of which is bent at right angles to form a wall plate 2, and this base plate 1 has claw plates 3 cut and raised at three places in the longitudinal direction to meet the wall plate 1. They are set up in parallel. A shaft 4 is inserted between the central nail plate 3a of these nail plates 3 and the wall plate 2,
The front end of the shaft 4 has a large-diameter head, and the rear end is pressed to form a stop to prevent the shaft 4 from being pulled out. The base end of a handle 6 is rotatably attached to the shaft 4, and a conical coil spring 7 whose diameter gradually decreases toward the distal end is rotatably fitted to the shaft. The large diameter end of the spring 7 is extended and locked in the groove of the handle 6, and the small diameter end of the coil spring 7 is extended to form a middle arm 8. At the same time, the tip of this middle arm 8 is bent into an L shape to form a forearm 9. Two claw plates 3b and 3c provided on the mount 1, front and back.
There is a crank 10 made of a metal rod between the wall plate 2 and the wall plate 2.
A middle arm 12 is inserted into the lower arm 11 and is bent in an L shape, extending from the tip thereof and bent in the opposite direction to the arm 11. A curved forearm 13 is formed. The front arm 13 located in the front and back is connected to the side wall plate 1 of the holding member 14, which is a frame having a downward U-shaped cross section.
4a, 14b in a direction perpendicular to the longitudinal direction thereof, and the front arm 19 of the spring 7
It is also rotatably attached to the side wall plates 14b, 14c of the presser member 14, and the presser member 1
4, as shown in FIG. 3, a rectangular metal plate extending in the front-rear direction is cut out in the middle of the left and right side edges, and protrusions 15 are formed at the front and rear ends of the metal plate. , the left and right side wall plates 14c and 14b are bent from two parallel bend lines a and a' in the central part to form a horizontal part 14a and left and right side wall plates 14c and 14b in which the lower edge of the protruding part 15 is lower than the intermediate lower edge. It is formed by integrally forming. Numeral 16 is an engagement hole that engages with a locking piece 17 provided at the free end of the handle 6 when the handle 6 is laid down to maintain the pressing member 14 in pressure contact with the base plate 1, and 18 fixes the base plate 1. Showing the cover plate.

When holding a paper sheet, the paper sheet is placed on the base plate 1 in the same manner as before, and then the handle 6
is rotated in the direction in which the holding member 14 is lowered.
Then, the spring 7 is wound up and the lower edges of the protrusions 15 of the side wall plates 14b, 14c of the presser member 14 first come into contact with the upper surface of the sheet P. When the handle 6 is further rotated in this state, the solid line in FIG. As shown in , the holding member 14 is lowered uniformly, and the side wall plates 14b,
The intermediate lower edge of 4c is also pressed against the sheet P, and the protruding portion 15 is strongly pressed against the upper surface of the sheet P. Therefore, the paper sheet P interposed between the base plate 1 and the pressing member 14
is strongly compressed mainly at four locations in the front and rear positions of both side wall plates of the presser member 14. Next, by further locking the locking piece 17 of the handle 6 into the engagement hole 16 of the wall plate 2, the sheet of paper is held between the base plate 1 and the pressing member 14.

Effects of the Device As described above, according to the present application, the lower edges of the front and rear end portions of the wall plates of the presser member are configured to be lower than those of the intermediate portion, so that the presser force for clamping the paper sheet is applied to both side walls of the presser member. It acts intensively on a total of four locations at each front and rear end of the board, that is, four locations in the plane direction, and can obtain a stronger clamping force compared to the case where the entire lower edge of the presser member is clamped. In this state, since there are two pinching points at the front and rear of the presser member, there is no risk that the paper sheets that are pinched will be subjected to rotational action, and there is an advantage that the paper sheets can be held securely and firmly.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, in which Fig. 1 is an overall perspective view with some parts omitted, Fig. 2 is a side view with some parts omitted showing the state in which the presser member is lowered, and Fig. 3 is an expanded view of the presser member. It is a diagram. In the figure, 1 is a base plate, 6 is a handle, 7 is a spring, 10 is a crankshaft, 14 is a presser member, 14
b and 14c are side wall plates, and 15 is a protrusion.

Claims (1)

[Scope of utility model registration request] By rotating the handle, a presser member with a downward U-shaped cross section supported by the crankshaft is lowered against a spring, and the sheet of paper is held between the base plate and the presser member. The paper clipping tool is characterized in that the lower edges of the front and rear ends of the left and right side wall plates of the holding member are formed lower than the intermediate lower edges thereof.