WO2008089605A1

WO2008089605A1 - A lever folder mechanism

Info

Publication number: WO2008089605A1
Application number: PCT/CN2007/001100
Authority: WO
Inventors: Chunyuen To
Original assignee: Leco Stationery Manufacturing Company Limited
Priority date: 2007-01-19
Filing date: 2007-04-04
Publication date: 2008-07-31
Also published as: CN101224683A

Abstract

A lever folder mechanism comprises: a base (101); two first arched sections (103) secured to the base and spaced apart from each other in parallel; a ring element (105) mounted moveably on the base including two second arched sections, wherein the first and second sections form closed rings; an elastic element (125), one end of which is mounted on the base, and the other end is pressed against the ring element; a male portion (109) ejected from the base; a lever (117) mounted pivotally on the male portion. The mechanism further comprises a first handle end and a second handle end for the user. The mechanism in the invention could be operatedmore laborsaving.

Description

Lever clamp mechanism

The invention relates to a lever clamp mechanism. Background technique

The lever clamp mechanism is a stationery widely used to store sheets such as loose-leaf paper. The applicant's Chinese Patent No. 01124645.6 discloses a lever clamp mechanism comprising a substantially flat substrate; two first ring portions spaced apart from each other and fixedly mounted at one end thereof to one longitudinal side of the substrate, The two first ring portions extend substantially vertically upward from the substrate and are slightly curved at the other end thereof to form a bent portion; two first portions spaced apart from each other and movably mounted at one end thereof to the other longitudinal side of the substrate a second ring portion, the two second ring portions extending substantially vertically upward from the substrate, and forming another curved portion at the other end thereof so as to cooperate with the bent portions at the other ends of the two first ring portions when the lever clamp mechanism is closed Forming a closed loop, the two second loop portions being integrally connected to each other at one end close to the substrate by a connecting portion, so that the two second loop portions move together, the connecting portion being formed at a middle portion thereof toward the center of the substrate a curved substantially U-shaped bent portion; forming a substantially upright raised portion by cutting the substrate and bending the cut portion upward at a central portion of the substrate; Mounted in a cutting groove formed adjacent to the other longitudinal side of the substrate, the other side elastically abuts against a spring piece on the underside of the substantially U-shaped bent portion of the connecting portion, the spring piece being used to connect the connection Pushing away from the plane of the substrate, thereby causing the two second loop portions to move together away from the two first ring portions that are fixedly mounted to open the lever clamp mechanism; and rotatably mounted to the boss portion Lever, the lever A roller is attached to the end thereof mounted to the boss. By rotating the lever downwardly, the roller can be moved against the upward thrust of the spring piece in a direction away from the handle portion of the lever to a position where the connecting portion is pressed against the substrate, thereby driving the two The second ring portions are moved together to a position in contact with the two first ring portions that are fixedly mounted to form a closed loop; by rotating the lever upwardly away from the substrate, the rollers can be moved in a direction toward the lever handle portion to release the pair a position at which the connecting portion is pressed, thereby moving the connecting portion away from the substrate under the upward thrust of the spring piece, causing the two second ring portions to move together away from the two first rings fixedly mounted The part forms an open loop to open the lever clamp mechanism.

In this prior art lever clamp mechanism, one end of the lever is mounted to the boss and the other end of the lever is used to operate the lever mechanism. In use, the user can only slam or close the lever clamp mechanism by operating the only operating end of the lever, which requires a large force to be applied, and in some cases (eg, the user is at the end opposite the lever operating end) ) is not easy to operate.

Therefore, it is necessary to improve the prior art lever clamp mechanism. Summary of the invention

The present invention has been made in view of the problems of the prior art lever clamp mechanism described above. Accordingly, it is an object of the present invention to provide a lever clamp mechanism that can open or close a lever clamp mechanism with a relatively small force applied, and also facilitates a user to operate the lever clamp mechanism.

According to the present invention, there is provided a lever clamp mechanism, the lever clamp mechanism comprising:

Flat substrate

Two first ring portions spaced apart from each other and fixed in parallel on the substrate, and a ring member movably mounted on the substrate, the ring member including two second ring portions spaced apart from each other and parallel, the two first ring portions and the two second ring portions respectively mutually Relatively disposed, the first ring portion and the second ring portion respectively facing each other when the lever clamp mechanism is closed may form a closed loop;

An elastic member attached to the substrate at one end and abutting against the ring member at the other end thereof for pushing the ring member away from the substrate by elastic force;

a raised portion that protrudes upward from the substrate;

a lever having an abutment portion rotatably mounted to the boss portion such that the abutment portion is in contact with the ring member;

Wherein, the lever has a first operating end and a second operating end operable by a user. According to the lever clamp mechanism of the present invention, since the lever has a first operation end and a second operation end that are operable by a user, the user can simultaneously operate the first operation end and the second operation end with both hands, thereby interacting with the single hand Operating the lever reduces the force required to operate the lever. On the other hand, the user can also operate the lever by one hand at either end of the lever mechanism, which is convenient for use. DRAWINGS

Figure 1 is an exploded perspective view of a lever clamp mechanism in accordance with the present invention;

Figure 2 is a perspective view of the lever clamp mechanism in a closed state in accordance with the present invention;

Figure 3 is a perspective view of the other side of the lever clamp mechanism in a closed state in accordance with the present invention;

Figure 4 is a bottom perspective view of the lever clamp mechanism in a closed state according to the present invention; Figure 5 is a front elevational view of the lever clamp mechanism in a closed state in accordance with the present invention;

Figure 6 is a plan view of the lever clamp mechanism in a closed state in accordance with the present invention; Figure 7 is a perspective view of the lever clamp mechanism in an open state in accordance with the present invention;

Figure 8 is a perspective view of the other side of the lever clamp mechanism in an open state according to the present invention; Figure 9 is a bottom perspective view of the lever clamp mechanism in an open state according to the present invention; Figure 10 is a lever clamp mechanism in an open state according to the present invention. The bottom side perspective view of the other side;

Figure 11 is a front elevational view of the lever clamp mechanism in an open state in accordance with the present invention;

Figure 12 is a plan view of the lever clamp mechanism in an open state in accordance with the present invention;

Figure 13 is a perspective view of the lever of the lever clamp mechanism in accordance with the present invention;

Figure 14 is a front elevational view of the lever of the lever clamp mechanism in accordance with the present invention;

Figure 15 is an end elevational view of the lever of the lever clamp mechanism in accordance with the present invention;

Figure 16 is a top plan view of the lever of the lever clamp mechanism in accordance with the present invention. detailed description

Figures 1-12 illustrate a lever clamp mechanism 100 in accordance with the present invention. The lever clamp mechanism 100 according to the present invention includes a substantially flat substrate 101. Two mutually spaced and parallel first ring portions 103 are fixedly mounted on one longitudinal side of the substrate 101. The two first ring portions 103 extend substantially vertically upward from the substrate 101 and are slightly bent at their free ends. To form a curved portion. A ring member 105 is movably mounted on the other longitudinal side portion of the substrate 101. The ring member 105 includes two second ring portions 105a spaced apart from each other and parallel, and a connecting portion 105b that connects the two second ring portions 105a in one body. Each of the second ring portions 105a is formed with a bent portion at its free end, respectively, such that the two second ring portions 105a of the ring member 105 can be mated with the corresponding opposing first ring portions 103 fixedly mounted to the substrate 101. Close the loop. Two second ring portions of the ring member 105 The 105a is integrally connected to each other through the connecting portion 105b at the other end thereof close to the substrate. The connecting portion 105b is bent substantially horizontally toward the center of the substrate at a central portion thereof to form a substantially U-shaped bent portion 105c, and the intermediate portion of the bent portion 105c is slightly protruded upward to form a protruding portion 105d. The first ring portion 103 and the ring member 105 each have a substantially circular or elliptical cross section and are made of a suitable material such as steel. The ring member 105 is movably mounted to the substrate 101 by cutting or stamping at both ends of the substrate mounting ring member 105, and winding and punching the substrate portions up and down to form the two rolled portions 107.

The portion of the substrate that is cut or stamped is bent substantially upwardly from the substrate in the vicinity of the longitudinal side of the substrate mounting ring member 105, thereby forming a substantially upright projection 109 at the center of the substrate 101. A slit 111 is formed on the substrate 101 by bending the convex portion 109 upward. An elongated groove 113 is also formed in the vicinity of the longitudinal side edge of the substrate mounting ring member 105, and the function of the elongated groove 113 will be described below. It is also possible to form one or more holes 115 on the substrate for fixing the lever clamp mechanism to the cover of a folder or a notebook or the like.

The lever clamp mechanism 100 according to the present invention further includes a lever 117 and a roller 119, which is preferably made of plastic. The roller 119 is mounted to the lever through the pin 121.

In the assembled lever clamp mechanism 100, the two first ring portions 103 are fixedly mounted on the longitudinal side of the substrate 101 by means of, for example, riveting, welding or other known connection. The ring member 105 movably fixes both ends of the connecting portion 105b of the ring member 105 by the two rolled portions 107, and the intermediate portion of the U-shaped bent portion 105c of each of the connecting portions 105b is substantially located near the convex portion 109, thereby The ring member 105 is movably mounted to the other longitudinal side portion of the substrate 101 such that the two second ring portions 105a of the ring member 105 are respectively fixedly mounted to the two first ring portions 103 Align with each other. The lever 117 equipped with the stick 119 is rotatably mounted to the boss 109 by a fixing member 123 such as a rivet, so that the stick 119 is substantially movable on the curved portion 105c of the ring member 105 as the lever 117 rotates. The spring plate 125, which is substantially slightly curved, is inserted into the elongated slot 113 on the substrate 101 to be held on the substrate 101, and the other end thereof is placed under the curved portion 105c of the ring member 105 and elastically abuts The curved portion 105c of the ring member 105 is for urging the curved portion 105c of the ring member 105 upward by the elastic force. Of course, the mounting position of the spring piece 125 is not limited to the illustrated position as long as the spring piece 125 can abut against the lower side of the curved portion 105c. Further, the shape of the spring piece 125 is not limited to the illustrated shape as long as the spring piece 125 can generate an upward thrust against the lower side of the curved portion 105c.

Unlike the prior art lever clamp mechanism, the lever of the lever clamp mechanism 100 according to the present invention

The 117 has two operating ends for the user to grasp, namely a first operating end 117a and a second operating end 117b. The roller 119 is mounted on the lever 117 at a position between the first operating end 117a and the second operating end 117b. The lever 117 is attached to the boss 109 by a fixing member 123 at another position between the first operating end 117a and the second operating end 117b. One of the first operating end 117a and the second operating end 117b may extend beyond the corresponding first ring portion 103 and second ring portion 105a to facilitate gripping by a user. Preferably, as shown in Figures 5 and 6, both the first operating end 117a and the second operating end 117b extend beyond the corresponding first ring portion 103 and second ring portion 105a. Although the levers shown in Figures 13-16 are generally sheet-like, other shaped levers such as elongated rods are also possible. According to the present invention, the maximum distance at which one or both of the first operating end 117a and the second operating end 117b extend beyond the corresponding first ring portion 103 and second ring portion 105a is preferably no more than 40 mm. When the distance from the operating end to the corresponding first ring portion 103 and the second ring portion 105a is too large, interference may be formed with the sheet held on the lever mechanism, thereby Hinder the paper sheet.

In the open state of the lever clamp mechanism shown in FIGS. 7-12, the first operating end 117a of the lever 117 is moved away from the substrate rotating lever 117, and the second operating end 117b of the lever 117 is held downward to rotate the lever toward the substrate. 117, or the first operating end 117a of the lever 117 held by one hand is moved away from the substrate rotating lever 117 and the other hand holds the second operating end 117b of the lever 117 downwardly toward the substrate rotating lever 117, which can make the lever 117 is rotated counterclockwise from the state shown in FIG. 5 around the fixing member 123, causing the roller 119 attached to the lever to move toward the protruding portion toward the raised first operating end 117a on the curved portion 105c of the ring member 105. 105d, pressing the connecting portion 105b against the substrate 101 against the upward thrust of the spring piece 125, thereby moving the two second ring portions 105a of the ring member 105 to move into contact with the two opposing first ring portions 103. Position, as shown in Figure 2, forms a closed loop to hold loose-leaf paper. In contrast, in the closed state of the lever clamp mechanism shown in Figs. 2-6, the first operating end 117a of the lever 117 is held downward by the lever 117, and the second operating end 117b of the lever 117 is held upward. The first operating end 117a remote from the substrate rotating lever 117, or one hand holding the lever 117, rotates the lever 117 downward toward the substrate, and the other hand holds the second operating end 117b of the lever 117 upwardly away from the substrate rotating lever 117, Both of the levers 117 can be rotated clockwise about the fixing member 123 from the state shown in Fig. 2, causing the roller 119 attached to the lever 117 to move away from the projection 105d in the direction toward the second operating end 117b being lifted. The pressing of the connecting portion 105b is released, so that the connecting portion 105b is moved away from the substrate 101 by the upward thrust of the spring piece 125, and the two second ring portions 105a of the ring member 105 are moved away from the two fixedly mounted relative positions. The first ring portion 103 forms an open loop to open the lever clamp mechanism for accessing the loose-leaf paper.

In order to ensure proper closing and opening of the lever clamp mechanism, at least one is formed on the lever 117 A prominent blocking portion 117c. Preferably, as shown in Figures 13-16, two protruding blocking portions 117c are formed on the lever 117 for respectively limiting the first operating end 117a and the second operating end 117b of the lever when opening and closing the lever clamping mechanism The range of rotation. It should be understood that one or two protruding blocking portions may also be formed on the boss portion 109, which may also be used to limit the range in which the first operating end 117a and the second operating end 117b are rotated, respectively.

According to the present invention, when the lever clamp mechanism is moved between the open state and the closed state, the first operating end 117a and the second operating end 117b are rotated at an angle range of less than or equal to 45 °. Further, when the lever clamp mechanism is moved between the open state and the closed state, the horizontal distance that the stick 119 moves on the ring member 105 is not more than 8.5 mm.

In order to make the gap between the opposing ring portions of the open lever clamp mechanism as large as possible in order to access the loose-leaf paper, preferably the projection of the roller 119 is about to move when the lever clamp mechanism is opened on the curved portion 105c of the ring member 105. The 105d-side is formed with a recess 105e for accommodating the roller 119 when the lever clamp mechanism is opened. In order to facilitate the processing, a concave portion 105e may be formed symmetrically on both sides of the protruding portion 105d. Preferably, the vertical distance between the lowest point of the concave surface of the recess 105e and the highest point of the convex surface of the projection 105d is equal to or larger than the diameter of the ring member 105.

When the lever clamp is in the closed state, the distance between the first operating end 117a and the ring portion in the vertical direction is at least 8 mm to avoid obstructing the reverse of the sheet along the ring portion; and the second operating end 117b and the substrate 101 The distance between the vertical directions is at least 6 mm to facilitate gripping the second operating end. When the lever clamp is in the fully open state, the distance between the second operating end 117b and the ring portion in the vertical direction is at least 8 mm to avoid obstructing access or flipping the sheet; and the first operating end 117a and the substrate 101 The distance between the vertical directions is at least 6mm, in order to grasp the first operating end.

In order to facilitate the user's grip and improve the comfort of the operation, a sheath 117d made of rubber, plastic or other flexible material may be disposed on one or both of the first operating end 117a and the second operating end 117b of the lever. . Color jackets of different colors can be used as needed for easy identification. Of course, it is also possible to directly apply the first operating end 117a and the second operating end 117b to different colors.

While the invention has been described in detail herein with reference to the preferred embodiments of the embodiments of the invention . For example, a cam portion may be attached to the end of the lever instead of the roller. Further, it is also possible to provide the projections and the recesses at the opposite ends of the opposite loops to prevent the mating loops from being disengaged. These changes and modifications are intended to fall within the scope of the invention.

Claims

Rights request

1. A lever clamp mechanism, the lever clamp mechanism comprising:

Flat substrate

Two first ring portions spaced apart from each other and fixed in parallel on the substrate, and a ring member movably mounted on the substrate, the ring members including two first and second spaced apart a second ring portion, the two first ring portions and the two second ring portions are respectively disposed opposite to each other such that the first ring portion and the second ring portion respectively facing each other when the lever clamp mechanism is closed may be formed Closed loop

a raised portion that protrudes upward from the substrate;

Wherein, the lever has a first operating end and a second operating end operable by a user.

The lever clamp mechanism according to claim 1, wherein the abutting portion is mounted on the lever at a position between the first operation end and the second operation end.

3. The lever clamp mechanism according to claim 1, wherein the lever is attached to the boss at another position between the first operating end and the second operating end.

4. The lever clamp mechanism according to claim 1, wherein one of the first operating end and the second operating end extends to a corresponding closed loop formed by the opposing first and second ring portions .

5. The lever clamp mechanism of claim 1 wherein both the first operational end and the second operational end extend to a respective closed loop formed relative to the first and second loop portions.

The lever clamp mechanism according to claim 4 or 5, wherein the operation end extends to a maximum distance beyond the corresponding first ring portion and the second ring portion of not more than 40 mm.

The lever clamp mechanism according to claim 1, wherein the lever is in the form of a sheet.

8. The lever clamp mechanism according to claim 1, wherein the lever has an elongated rod shape.

9. The lever arch mechanism of claim 1 wherein said lever is formed with at least one protruding stop.

The lever clamp mechanism according to claim 1, wherein the lever is formed with two protruding blocking portions.

A lever clamp mechanism according to claim 1, wherein said boss portion is formed with at least one protruding blocking portion.

The lever clamp mechanism according to claim 1, wherein the boss portion is formed with two protruding blocking portions.

The lever clamp mechanism according to claim 1, wherein the two second loop portions are integrally connected by a connecting portion including a bent portion that is curved toward a center of the substrate.

14. The lever arch mechanism according to claim 13, wherein the intermediate portion of the curved portion protrudes upward to form a protruding portion, and the abutting portion presses the lever clamping mechanism when pressed against the protruding portion.

The lever mechanism according to claim 14, wherein a concave portion is formed in a curved portion on a side of the projection on which the abutment portion is moved when the lever clamp mechanism is opened.

The lever mechanism according to claim 14, wherein a concave portion on the curved portion is formed on both sides of the protruding portion.

The lever mechanism according to claim 15 or 16, wherein a vertical distance between a lowest point of the concave surface of the recess and a highest point of the convex surface of the protrusion is equal to or greater than The diameter of the ring member.

A lever clamp mechanism according to claim 1, wherein the first operating end and the second operating end have a range of rotation equal to or less than 45 °.

The lever clamp mechanism according to claim 1, wherein when the lever clamp mechanism is moved between an open state and a closed state, a horizontal distance of the abutment portion on the ring member is not more than 8.5 Mm.

The lever mechanism according to claim 1, wherein when the first operating end or the second operating end is in a position closest to the substrate, the first operating end or the second operating end is away from the The substrate is spaced apart in the vertical direction by a distance of at least 6 mm.

The lever mechanism according to claim 1, wherein when the first operating end or the second operating end is in a position closest to the ring portion, the first operating end or the second operating end is at a distance The spacing of the ring portions in the vertical direction is at least 8 mm.

The lever clamp mechanism of claim 1, wherein at least one of the first operating end and the second operating end is provided with a sheath of flexible material.

23. The lever clamp mechanism of claim 22, wherein the sheath is a colored sheath.

A lever clamp mechanism according to claim 1, wherein the first operating end and the second operating end have different colors.

The lever mechanism according to claim 1, wherein the elastic member is a spring piece.

The lever clamp mechanism according to claim 1, wherein the elastic member is a spring wire.

The lever mechanism according to claim 1, wherein the abutting portion is a cam portion.

The lever clamp mechanism according to claim 1, wherein the abutting portion is a roller.