CN100410085C - Lever arch binder mechanism with complementary ring tips - Google Patents

Abstract

An annular binding device has a D-shaped ring which consists of a linear fixed part and an arc-shaped movable matching part. A concave part is arranged on the top of the movable part, a convex part is arranged on the top of the fixed part, and the convex part is arranged in the concave part. The side window of the top part having the concave part crosses with the concave part, thereby enabling the convex part to set in place on the top part having the concave part smoothly in spite of a large transverse component existing in the relative motion towards the top part.

Description

Has the complementary arch binder mechanism ring top, lever

Technical field

The present invention relates to a kind of circular binding device that activates crank that has.

Background technology

Many fashionable circular binding devices have actuation lever, with two of open and closes, three or more rings.In some this device, the ring that lever is also locked closed.The typical setting be, the bottom of each semi-ring all is connected on the hinged plate, and this plate is limited between the edge of metal shell of arch, and when plate was opening and closing between the position switch, this metal shell played toggle action.

Other device has been proposed, wherein, the opening and/or closed realizing of ring by cam gear.This structure of the prior art can be seen in U.S. Patent No. 778910, No.2494898, No.2789561 and No.2894513.U.S. Patent No. 778910 discloses a kind of dicyclo binding apparatus, and this device is opened by the end that promotes a lever, and this lever is pressed next crank, and the two ends of this crank are exactly the movable end of two rings.U.S. Patent No. 6637968 shows a kind of and the more closely-related device of the present invention.

In most of circular binding devices, relative annular section all is semicircle, like this, when they are closed, forms a circle in essence.A problem of semicircle annular portion structure is to take out in the ring that is not easy once a large amount of paper to be packed into or from ring.Be filled to such ring on especially difficult with automaton paper.Based on such reason, the inventor of some prior art has developed such ring, and wherein, one section of ring is straight, perhaps almost is straight.Use this ring that is commonly referred to D shape ring, a large amount of paper can be located straightway very simply and fastly.But because D shape ring is not symmetrical, meet on the left side or the right side of the central plane of device in each top, therefore not closer to each other along axis direction, and cross stream component is arranged, so its convergence line tilts with respect to the length direction of straightway.Amount of bias is bigger, and this cross stream component is bigger.

When a top had projection in the recess that is seated another top, the approach direction of inclination had caused difficulty.Under this structure, the convergence of inclination may cause interfering between the top of convergence, and obstruction or prevention are normally in place.Up to now, be that top with straightway curves inwardly to the solution of this problem always, thereby make it point to the convergence top of arc section.But, top curved and the target of being convenient to a large amount of paper packed into or take out are disagreed.

Summary of the invention

One of purpose of the present invention is, improves the operation with circular binding device two or more rings, that crank is handled.

One of purpose of the present invention is, a kind of circular binding device is provided, and no matter this device is that tilting or non-tilting all have D shape ring, and D shape ring has straightway completely, and a large amount of paper can be easily carried in this straightway and take away from this straightway.

A relevant purpose of the present invention is, a kind of geometry of encircling the top is provided, and it allows each top and length direction to be abundant angle ground convergence each other, and is smoothly in place, and does not have interference.

These purposes and other purpose obtain by a kind of circular binding device, and this circular binding device has: a gripper shoe; At least two rings, each ring comprise movable section of being connected pivotly on the gripper shoe and are fixed on movable section on the described gripper shoe; And crank, it moves ring between a position of opening and closed and locked position.Crank has one or more crank offset part that depart from longitudinal axis, and this crank is supported on the gripper shoe pivotly, to swing around longitudinal axis.Movable ring segment and crank are arranged to one.A slice spring makes the closed position of crank deflection ring, but and the lever of a manual control makes crank to the motion of ring open position.Lever is pivotably mounted on the described gripper shoe, and presses down the crank offset part, when lever is depressed, orders about crank towards the ring closing position.

Description of drawings

In the accompanying drawings,

Fig. 1 shows the binding apparatus that is in open mode for the isometric view of the dicyclo binding apparatus that the present invention embodied;

Fig. 2 is the similar view of another form of the present invention, shows the binding apparatus that is in closure state;

Fig. 3 is the such view of image pattern 3, shows another form of the present invention; With

Fig. 4 shows the top of each ring, and is half-open slightly.

The specific embodiment

The present invention is embodied as a kind of device, and this device comprises gripper shoe 10, and this gripper shoe 10 has the protrusion that processes with mold pressing, flat-top just, and it has strengthened this gripper shoe.Jut 12 on the flat-top 14 supports the bottom of the linear retainer ring element 16,18 that extends perpendicular to gripper shoe.20 places stop at the top in the upper end of retaining element.

Big tab 22 vertically comes out from the gripper shoe bending.Narrow groove 24 cuts out along the top in the space of tab distortion, reserves bridge portion 26, and this bridge portion is distortion slightly upwards, and the lower surface of support chip spring 28, and the anchor portion of sheet spring 28 remains in the groove.The free end of sheet spring provides the upwards bias voltage to crank, and this crank will illustrate below.

The top of tab installed or is welded on by pin 30 towards sheet spring one side.

One end of actuation lever 32 is pivotably mounted on the pin, and the head of pin is flattened, to keep lever.

Lever has the first end section 34, perpendicular to the interlude 36 of the first end section with perpendicular to the second end section 38 of interlude.Done flat top 40 and extended, be parallel to interlude since the second end section.Lever 32 is articulated in the central plane of this device.Lever is provided with the nylon roller 42 of making groove on its circumference, and this roller 42 is fixed on the pin 44 with head, and this pin is fixed on the lever, and is extending from lever near the first end section and interlude intersection.Distance between the pin 30 and 44 is about half inch.

Two movable ring segments 46,48 extend from the opposite end of public crank 50.Each movable ring segment is J-shaped, has the straightway 52 and the curved section 54 that are connected with crank.The end 55 (Fig. 3) of curved section has conical recess 57, and this recess holds the complementary with it top 20 of shape on the canned paragraph.

Crank 50 (Fig. 2) has the crank offset part, and this crank offset part is made of the line part 58 that is offset to crank journal 60.Crank is kept abutting on the gripper shoe by two tabs 62 pivotly, and this tab is bent upwards and curls around axle journal 60 from gripper shoe, thereby forms plain bearing.Sheet spring 28 tends to make crank along the direction action that ring segment is opened upwards against the bottom of crank offset part 58.

Nylon roller 42 contacts with above-mentioned crank offset part 58 from the top.Along with lever is depressed, this roller rolls along the crank offset part, pushes the crank offset part to gripper shoe, so make the ring segment closure.When lever arrived gripper shoe (Fig. 2), this roller was crossed the center line of crank offset part slightly, and locking crank offset part.The upwards bias voltage that sheet spring 28 provides makes lever remain on this position, till lever is by manual release.

Fig. 3 shows the ring top of greatly amplifying.The top 20 of fixed part 18 has projection 66, and its diameter is in essence less than the diameter of cross section of ring.This projection is depicted as has conical base portion 68, but these details only are to recommend.Regardless of the shape of projection, the top 55 of the curve part of each movable ring segment 46,48 has complementary recess 70, to hold projection 66.Be provided with window 72, enter recess to allow projection 66 along an angle, this is because the top is not a convergence each other along its length, but is angle ground convergence each other in essence with the length direction of fixed part.Window can have different shape, and but, in any case the cross section with projection 66 is the same big at least for it, like this, projection does not enter recess with can having interference.Consider the tolerance and the bending of element, window can be made greatly slightly, and but, excessive window can cause reducing in conjunction with fastness between the top of interworking.

Although projection describes on fixed part and illustrates, and complementary with it recess is arranged on movable section,, structure setting can be opposite.Fig. 4 shows this modification: at this, the fixing line part of ring has recess 170 at its top 155, and movable curve part has the projection 166 that is suitable for being seated in the recess.It may be noted that window 172 and recess intersect the opposition side at the top, that is, at the central plane of the medial surface that encircles to binding apparatus, but thought is the same--allow projection to have the ground of interference and smoothly be not seated in top with recess.

Although described device is two ring binding apparatus, should be appreciated that the present invention goes for having the binding apparatus more than two rings equally.

Since the present invention can make amendment and change, above-mentioned explanation and accompanying drawing thereof should be construed as merely explanation of the invention, and the present invention is limited by following each claim.

Claims (6)

1. circular binding device, this device comprises: substrate, it supports several rings, and each ring comprises fixed part and movable part; And crank, it makes the movable part motion of each ring, and like this, each ring can open and close, wherein,

In described fixed part and the movable part one is curved in essence, stop at first top, and another shape linearly in essence stops at second top,

One of described first top and second top have projection, and in described first top and second top another has complementary recess, and when each ring was closed, this recess held projection;

And the top with complementary recess also has the side window mouth that intersects with recess, and the shape of this window allows the projection edge to enter recess with the direction that the line part length direction tilts in essence.

2. circular binding device as claimed in claim 1, wherein, curved portions is a movable part, and line part is a fixed part.

3. circular binding device as claimed in claim 1, wherein, crank is connected with all movable ring parts, and the circular binding device further comprises: driving element, it drives crank to the ring open position; And spring element, it makes crank to the closed position bias voltage of ring.

4. circular binding device as claimed in claim 3, wherein, driving element is a lever, this lever is supported on the substrate pivotly, lever have one with the contacted element of crank.

5. circular binding device as claimed in claim 4 wherein, is one to be installed in the roller on the lever with the contacted element of crank.

6. circular binding device as claimed in claim 1, wherein, described recess is conical recess.

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