WO2008052401A1

WO2008052401A1 - A lever clamp mechanism

Info

Publication number: WO2008052401A1
Application number: PCT/CN2007/000717
Authority: WO
Inventors: Hungyu Cheng; Wingyiu Ng; Xitao Deng
Original assignee: Leco Stationery Manufacturing Company Limited
Priority date: 2006-10-31
Filing date: 2007-03-06
Publication date: 2008-05-08
Also published as: AU2007314018A1; AR062206A1; CN101172435A; EP2098379A1; CN101172435B; TW200836939A

Abstract

A lever clamp mechanism includes a flat base plate; two ring parts which are in parallel to each other and spaced apart mutually with one end of each ring part fixedly mounted on said base plate; a ring assembly removably mounted on said base plate, which includes two other ring parts in parallel to each other and spaced apart mutually and a flexion part bending towards the center of the base plate, and the center part of the flexion part protrudes upwardly to form a protuberance part, so when the ring assembly moves, the two ring parts and the two other ring parts can make close loops respectively; an elastic member which acts to push said ring assembly away from said base plate; an embossment part which projects upwardly from said base plate; a lever mechanism which rotatablely mounts on said embossment part to connect with said ring assembly to make said ring assembly abut against or move away from said base plate so as to close or open said lever mechanism, and a concave part is formed on at least one side of the protuberance part of said flexion part. The turnover angle of the present handle part is reduced, and the handle can be raised higher, so when the papers in the clamp are flipped, the handle tail will not interfere with the papers, thus facilitating the operation.

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. A conventional lever clamp mechanism includes a substantially flat substrate; two ring portions spaced apart from each other and fixedly mounted at one end thereof to one longitudinal side of the substrate, the two ring portions extending substantially vertically upward from the substrate, and The other end thereof is slightly curved to form a bent portion; is spaced apart from each other and is movably mounted at one end thereof to the other two ring portions of the other longitudinal side portion of the substrate, the other two ring portions being substantially vertically upward from the substrate Extending, and forming another bend at the other end thereof to form a closed loop with the bent portion of the other end of the two loop portions when the lever clamp mechanism is closed, the other two loop portions passing through the joint portion at one end close to the substrate Integrally connected to each other such that the other two ring portions move together, the connecting portion forms a substantially U-shaped bent portion bent toward the center of the substrate at a middle portion thereof, and a middle portion of the bent portion has an upwardly protruding protrusion portion; Cutting the substrate and bending the cut portion upward to form a substantially upright projection at the center of the substrate; one side is mounted adjacent to a spring piece on the other side of the cutting groove formed by the other longitudinal side portion of the substrate elastically abutting against a lower side of the substantially u-shaped bent portion of the connecting portion, the spring piece being used to push the connecting portion away The substrate plane, thereby causing the other two ring portions to move together away from the fixedly mounted two ring portions to snooze the lever clamp mechanism; and a lever rotatably mounted to the boss portion, A roller that abuts against the protrusion is provided on the lever. By rotating the lever down, the roller can be made to overcome the bullet

1 P2007441M The upward thrust of the reed moves in a direction away from the handle portion of the lever to a position that presses the connecting portion against the substrate, thereby causing the other two ring portions to move together to the two ring portions that are fixedly mounted a position of contact, forming a closed loop; by rotating the lever upwardly away from the substrate, the roller can be moved in a direction toward the lever handle portion to release the position against which the connecting portion is pressed, so that the connecting portion is in the The upward force of the spring leaf is moved away from the substrate, causing the other two ring portions to move together away from the two ring portions that are fixedly mounted, forming an open ring to snooze the lever clamp mechanism.

In the prior art lever clamp mechanism, when the lever clamp mechanism is opened, the handle portion has a large flip angle, and the handle is lifted higher. When the paper in the clip is flipped, the handle tail easily interferes with the paper, thereby hindering the storage of the loose-leaf paper. It is very inconvenient to access the loose-leaf paper.

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

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 has a small angle of flipping of the handle portion and a low tilt of the handle when the lever clamp mechanism is opened, so that the tail of the handle is not easily attached to the paper when the paper in the clamp is turned Interference occurs, which facilitates operation.

According to the present invention, there is provided a lever clamp mechanism comprising: a flat substrate; two first ring portions spaced apart from each other in parallel and fixedly mounted to the substrate at one end; a ring movably mounted on the substrate a member, the ring member includes two second ring portions spaced apart from each other and parallel, the two second ring portions being integrally connected by a connecting portion, the connecting portion including a curved portion bent toward a center of the substrate, The middle portion of the bend

2 P2007441M Forming a protrusion upwardly, the two first ring portions and the two second ring portions are respectively disposed opposite to each other such that the two second ring portions and the second ring portion opposite to each other when the ring member moves a closed loop may be separately formed; an elastic member having one end mounted on the substrate and the other end abutting against the ring member for pushing the ring member away from the substrate by an elastic force; a protrusion protruding upward from the substrate a lever mechanism rotatably mounted to the boss for contact with the ring member, the lever mechanism for pressing the ring member against or away from the substrate to close or The lever clamp mechanism is opened, wherein a concave portion is formed on at least one side of the protruding portion on the curved portion.

According to an aspect of the invention, the depth of the recess is set such that a distance between a highest point of the protrusion and a lowest point of the recess is greater than or equal to a diameter of a wire forming the ring member.

According to another aspect of the invention, the depth of the recess is set such that the distance between the highest point of the projection and the lowest point of the recess is greater than or equal to 4.5 mm.

Further, preferably, the lever handle portion of the lever clamp mechanism of the present invention has an inclination angle with respect to the lever body as small as possible so that the handle is tilted lower. According to the lever clamp mechanism of the present invention, since the recessed portion on the curved portion is formed on at least one side of the protruding portion, when the lever clamp mechanism is opened, the handle portion has a small turning angle and the handle is tilted lower, thereby When the paper inside the clip is turned, the tail of the handle does not easily interfere with the paper, which facilitates the operation. DRAWINGS

1 is an exploded perspective view of a lever clamp mechanism according to a first embodiment of the present invention; FIG. 2 is a lever clamp mechanism according to a first embodiment of the present invention when viewed from one side

P2007441M a closed view of the state;

Figure 3 is a perspective view of the lever clamp mechanism according to the first embodiment of the present invention in a closed state when viewed from the other side;

Figure 4 is a bottom perspective view of the lever clamp mechanism in a closed state according to the first embodiment of the present invention;

Figure 5 is a perspective view showing the lever clamp mechanism according to the first embodiment of the present invention in an open state when viewed from one side;

Figure 6 is a perspective view of the lever clamp mechanism according to the first embodiment of the present invention in an open state when viewed from the other side;

Figure 7 is a bottom perspective view of the lever clamp mechanism according to the first embodiment of the present invention in an open state when viewed from one side;

Figure 8 is a bottom perspective view of the lever clamp mechanism according to the first embodiment of the present invention in an open state when viewed from the other side;

Figure 9A is a perspective view of a ring member of a lever clamp mechanism in accordance with a first embodiment of the present invention;

Figure 9B is a front elevational view of the ring member of the lever clamp mechanism in accordance with the first embodiment of the present invention;

Figure 9C is an enlarged view of the circled portion of Figure 9B in a ratio of 2:1; Figure 9D is a plan view of the ring member of the lever clamp mechanism according to the first embodiment of the present invention;

Figure 9E is a side elevational view of the ring member of the lever clamp mechanism in accordance with the first embodiment of the present invention;

4 P2007441M Figure 10A is a front elevational view of the lever clamp mechanism in a closed state in accordance with a first embodiment of the present invention;

Figure 10B is a plan view showing the lever clamp mechanism in a closed state according to the first embodiment of the present invention;

Figure 10C is a right side view of the lever clamp mechanism in a closed state according to the first embodiment of the present invention;

Figure 10D is a left side view of the lever clamp mechanism in a closed state according to the first embodiment of the present invention;

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

Figure 11B is a plan view showing the lever clamp mechanism in an open state according to the first embodiment of the present invention;

Figure 11C is a right side view of the lever clamp mechanism in an open state according to the first embodiment of the present invention;

Figure 11D is a left side view of the lever clamp mechanism in an open state according to the first embodiment of the present invention;

Figure 12 is an exploded perspective view of a lever clamp mechanism according to a second embodiment of the present invention. Figure 13 is a perspective view of the lever clamp mechanism according to the second embodiment of the present invention when viewed from one side;

Figure 14 is a perspective view of the lever clamp mechanism according to the second embodiment of the present invention in a closed state when viewed from the other side;

Figure 15 is a bottom view of the lever clamp mechanism in a closed state according to a second embodiment of the present invention.

5 P2007441M Side perspective view;

Figure 16 is a perspective view showing the lever clamp mechanism according to the second embodiment of the present invention in an open state when viewed from one side;

Figure 17 is a perspective view of the lever clamp mechanism according to the second embodiment of the present invention in an open state when viewed from the other side;

Figure 18 is a bottom perspective view of the lever clamp mechanism according to the second embodiment of the present invention in a snoring state when viewed from one side;

Figure 19 is a bottom perspective view of the lever clamp mechanism according to the second embodiment of the present invention in an open state when viewed from the other side;

Figure 20A is a perspective view of a ring member of a lever clamp mechanism in accordance with a second embodiment of the present invention;

Figure 20B is a front elevational view of the ring member of the lever clamp mechanism in accordance with a second embodiment of the present invention;

Figure 20C is an enlarged view of the circled portion of Figure 20B in a ratio of 2:1; Figure 20D is a plan view of the ring member of the lever clamp mechanism according to the second embodiment of the present invention;

Figure 20E is a side elevational view of the ring member of the lever clamp mechanism in accordance with a second embodiment of the present invention;

Figure 21A is a front elevational view of the lever clamp mechanism in a closed state in accordance with a second embodiment of the present invention;

Figure 21B is a plan view showing the lever clamp mechanism in a closed state according to a second embodiment of the present invention;

6 P2007441M Figure 21C is a right side view of the lever clamp mechanism in a closed state in accordance with a second embodiment of the present invention;

Figure 21D is a left side view of the lever clamp mechanism in a closed state in accordance with a second embodiment of the present invention;

Figure 22A is a front elevational view of the lever clamp mechanism in an open state in accordance with a second embodiment of the present invention;

Figure 22B is a plan view showing the lever clamp mechanism in an open state according to a second embodiment of the present invention;

Figure 22C is a right side elevational view of the lever clamp mechanism in an open state in accordance with a second embodiment of the present invention;

Figure 22D is a left side view of the lever clamp mechanism in an open state in accordance with a second embodiment of the present invention.

Figure 23 is an exploded perspective view of the lever clamp mechanism according to a third embodiment of the present invention. Figure 24 is a perspective view showing the lever clamp mechanism according to the third embodiment of the present invention in a closed state when viewed from one side;

Figure 25 is a perspective view showing the lever clamp mechanism according to the third embodiment of the present invention in a closed state when viewed from the other side;

Figure 26 is a bottom perspective view of the lever clamp mechanism in a closed state according to a third embodiment of the present invention;

Figure 27 is a perspective view showing the lever clamp mechanism according to the third embodiment of the present invention in an open state when viewed from one side;

Figure 28 is a view of the lever clamp mechanism according to the third embodiment of the present invention as seen from the other side

7 P2007441M a perspective view of the open state;

Figure 29 is a bottom perspective view of the lever clamp mechanism according to the third embodiment of the present invention in an open state when viewed from one side;

Figure 30 is a bottom perspective view of the lever clamp mechanism according to the third embodiment of the present invention in an open state when viewed from the other side;

Figure 31A is a perspective view of a ring member of a lever clamp mechanism in accordance with a third embodiment of the present invention;

Figure 31B is a front elevational view of a ring member of a lever clamp mechanism in accordance with a third embodiment of the present invention;

Figure 31C is an enlarged view of the circled portion of Figure 20B in a ratio of 2:1; Figure 31D is a plan view of the ring member of the lever clamp mechanism according to the third embodiment of the present invention;

Figure 31E is a side elevational view of the ring member of the lever clamp mechanism in accordance with a third embodiment of the present invention;

Figure 32A is a front elevational view of the lever clamp mechanism in a closed state in accordance with a third embodiment of the present invention;

Figure 32B is a plan view showing the lever clamp mechanism in a closed state according to a third embodiment of the present invention;

Figure 32C is a right side view of the lever clamp mechanism in a closed state according to a third embodiment of the present invention;

Figure 32D is a left side view of the lever clamp mechanism in a closed state in accordance with a third embodiment of the present invention;

8 P200744IM Figure 33A is a front elevational view of the lever clamp mechanism in an open state in accordance with a third embodiment of the present invention;

Figure 33B is a plan view showing the lever clamp mechanism in an open state according to a third embodiment of the present invention;

Figure 33C is a right side view of the lever clamp mechanism in an open state in accordance with a third embodiment of the present invention;

Figure 33D is a left side view of the lever clamp mechanism in an open state in accordance with a third embodiment of the present invention. detailed description

1-11 show a lever clamp mechanism 100 in accordance with a first embodiment of the present invention. The lever clamp mechanism 100 according to the first embodiment of the present invention includes a substantially flat substrate 101. Two mutually spaced and parallel ring portions 103 are fixedly mounted on one longitudinal side of the substrate 101. The two ring portions 103 extend substantially vertically upward from the substrate 101 and are slightly bent at their free ends to form a bent portion. . A ring member 105 is movably mounted on the other longitudinal side of the substrate 101. The ring member 105 includes two ring portions 105a spaced apart from each other and parallel, and a connecting portion 105b that connects the two ring portions 105a in one body. Each of the ring portions 105a is formed with a bent portion at its free end, respectively, so that the two ring portions 105a of the ring member 105 can cooperate with the corresponding opposing ring portions 103 fixedly mounted to the substrate 101 to form a closed loop. The two ring portions 105a of the ring member 105 are integrally connected to each other at their other ends close to the substrate via the connecting portion 105b. 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 a middle portion of the curved portion 105c is slightly protruded upward to form a protruding portion 105d, and a protruding portion 105d is formed on the curved portion 105c.

9 P2007441M Recessed portions 105e are formed on both sides. The ring portion 103 and the ring member 105 have a substantially circular or elliptical cross section, respectively, and are made of a suitable material such as a steel wire or the like. 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 rolling the two portions of the substrate portion which are cut or stamped upward and outward.

The portion of the substrate that is cut or stamped is bent substantially upwardly from the substrate in the vicinity of the longitudinal side portion of the substrate mounting ring member 105, thereby forming a substantially upright projection 109 at the center portion of the substrate 101. A slit 111 (see Figs. 1 and 4) 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 action 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 clip 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. The lever 117 includes a lever body 117a, a lever head portion 117b extending obliquely upward from the lever body 117a, and a lever handle portion (operating end) 117c extending from the lever body 117a toward the other end. The lever clamp mechanism 100 according to the present invention further includes a roller 119. Roller 119 is preferably made of plastic. The roller 119 is attached to the joint portion of the lever body 117a and the lever head 117b via the pin shaft 121.

In the assembled lever clamp mechanism 100, the two ring portions 103 are fixedly mounted on the longitudinal sides of the substrate 101 by means of, for example, riveting, welding or other known connection means. 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

10 P2007441M The upper portion is located adjacent to the boss portion 109, thereby movably mounting the ring member 105 to the other longitudinal side portion of the substrate 101 such that the two ring portions 105a of the ring member 105 are respectively aligned with the fixedly mounted two ring portions 103 . The lever 117 equipped with the roller 119 is rotatably mounted to the boss 109 at a free end of the lever head 117b by a fixing member 123 such as a rivet, so that the roller 119 is substantially movable on the curved portion 105c of the ring member 105. A substantially arcuately curved spring piece 125-end is inserted into the elongated slot 113 on the substrate 101 to remain on the substrate 101, the other end of which is placed under the curved portion 105c of the ring member 105 and resiliently 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 25 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.

As shown in FIG. 5, the lever clamp mechanism is in an open state. At this time, the lever head 117b can be rotated clockwise from the state shown in FIG. 5 around the fixing member 123 by holding the lever handle portion 117c toward the substrate rotation lever 117. The roller 119 which is attached to the joint portion of the lever body 117a and the lever head portion 117b is moved on the curved portion 105c of the ring member 105 in the direction away from the lever handle portion 17c to the projection portion 105d (i.e., the roller 119 is from the recess portion) The 105e is moved to the protrusion 105d), and the connecting portion 105b is pressed against the substrate 101 against the upward thrust of the spring piece 125, thereby moving the two ring portions 105a of the ring member 105 to move to the opposite ring portions 103. At the location of the contact, a closed loop as shown in Figure 2 is formed to hold the loose-leaf paper.

In contrast, in the closed state of the lever clamp mechanism shown in Fig. 2, by holding the lever

11 P2007441M The handle portion 117c is moved away from the substrate rotation lever 117, and the lever head portion 117b can be rotated counterclockwise from the state shown in Fig. 2 around the fixing member 123, resulting in the roller 119 attached to the joint portion of the lever body 117a and the lever head portion 117b. The projection 105d is moved away from the projection 105d in the direction toward the lever handle portion 117c (i.e., the roller 119 is moved from the projection 105d to the recess 105e), and the pressing of the connecting portion 105b is released, so that the connecting portion 105b is in the upward direction of the spring piece 125. The substrate 101 is moved under the action of the thrust, and the two ring portions 105a of the ring member 105 are moved away from the two oppositely mounted ring portions 103 to form an opening ring to open the lever mechanism for accessing the loose-leaf paper.

With respect to the conventional lever clamp mechanism, since the concave portion 105e is provided on the curved portion 105c, the flip angle of the lever handle portion 117c is significantly smaller than the conventional lever clamp mechanism from the open position to the closed position, so that the lever handle portion 117c Does not interfere with the paper inside the clip. Preferably, in the present invention, the depth of the recess 105e is set such that the distance between the highest point of the protrusion 105d and the lowest point of the recess 105e is greater than or equal to the diameter D of the wire of the ring member (as shown in FIG. 9B). And 9C). Further, preferably, in the present invention, the depth of the concave portion 105e is set such that the distance between the highest point of the protruding portion 105d and the lowest point of the concave portion 105e is greater than or equal to 4.5 mm.

In order to ensure proper closing and opening of the lever clamp mechanism, it is preferable to have a recess 105f in the middle of the projection 105d to facilitate positioning of the roller 119 when the lever clamp mechanism is closed.

Preferably, two blocking portions 127a and 127b are formed on the convex portion 109 on the side facing the ring member for limiting the range in which the lever head portion 117b can be rotated when the lever clamping mechanism is closed, and when the lever clamping mechanism is opened The range in which the lever head 117b can rotate. Of course, it is also possible to provide only one blocking portion 127b to limit the opening of the lever mechanism mechanism.

12 P2007441M The range in which the head portion 117b can rotate. The range in which the lever head portion 117b can be rotated when the closed lever clamp mechanism is restricted can be realized by abutting the lever body 117a against the substrate 101. Preferably, the lever clamp mechanism is in a position to open a certain range by the restriction of the blocking portion 127b.

Figures 12-22 illustrate a lever clamp mechanism 200 in accordance with a second embodiment of the present invention. The structure of the lever clamp mechanism 200 according to the second embodiment of the present invention is substantially similar to the lever clamp mechanism 100 according to the first embodiment of the present invention, except that the recessed portion 205d has a recess only on the side facing the lever handle portion. 205e. The same or similar components of the lever clamp mechanism 200 according to the second embodiment of the present invention are the same as those of the lever clamp mechanism 100 of the first embodiment of the present invention, and the description of the same components is omitted.

In the lever clamp mechanism 200 according to the second embodiment of the present invention, the two ring portions 205a of the ring member 205 are integrally connected to each other through the connecting portion 205b at the other end thereof close to the substrate. The connecting portion 205b is bent substantially horizontally toward the center of the substrate at a central portion thereof to form a substantially U-shaped bent portion 205c, and the intermediate portion of the curved portion 205c is slightly protruded upward to form a protruding portion 205d formed on a side of the protruding portion 205d facing the lever handle portion 217c. There is a recess 205e. In the second embodiment of the present invention, preferably, a blocking portion 227b is formed on a side of the boss portion 209 closer to the lever handle portion for limiting the range in which the lever head portion 217b can rotate when the lever lever mechanism is smashed , thereby limiting the lever clamp mechanism to a position that opens a certain range. Of course, two blocking portions can be provided on the boss portion 209 in the same manner as in the first embodiment.

In the open state of the lever clamp mechanism shown in Fig. 17, the lever head 217b can be wound around the fixing member by holding the lever handle portion 217c downwardly toward the substrate rotating lever 217

13 P2007441M The rotation of 223 from the state shown in Fig. 17 causes the roller 219 attached to the joint portion of the lever body 217a and the lever head portion 217b to move to the protrusion in the direction away from the lever handle portion 217c on the curved portion 205c of the ring member 205. The portion 205d (SP, moving from the concave portion 205e to the protruding portion 205d) presses the connecting portion 205b against the substrate 201 against the upward thrust of the spring piece 225, thereby moving the two ring portions 205a of the ring member 205 to move to and from The position where the two opposing ring portions 203 are in contact, as shown in Fig. 13, forms a closed loop to hold the loose-leaf paper.

On the contrary, in the closed state of the lever clamp mechanism shown in Fig. 13, by holding the lever handle portion 217c to rotate the lever 217 upward away from the substrate 201, the lever head portion 217b can be reversed from the fixing member 223 from the state shown in Fig. 13. When the hour hand is rotated, the roller 219 attached to the engaging portion of the lever body 217a and the lever head portion 217b is moved away from the protruding portion 205d in the direction toward the lever handle portion 217c, and the pressing of the connecting portion 205b is released, thereby making the connection The portion 205b is moved away from the substrate 201 by the upward thrust of the spring piece 225, and the two ring portions 205a of the ring member 205 are moved away from the two oppositely mounted ring portions 203 to form an open ring to open the lever clamp mechanism for storage. Take loose-leaf paper.

23-33 show a lever clamp mechanism 300 in accordance with a third embodiment of the present invention. The structure of the lever clamp mechanism 300 according to the third embodiment of the present invention is substantially similar to the lever clamp mechanism 100 according to the second embodiment of the present invention, except that the recess 305e is provided on the side away from the lever handle portion, and The joint portion of the lever body 317a and the lever head portion 317b is rotatably mounted to the boss portion 309 by a fixing member 323 such as a rivet, and the roller (abutment portion) 319 is attached to the free end of the lever head portion 317b. Lever clamp mechanism 300 according to third embodiment of the present invention and lever clamp mechanism of second embodiment of the present invention

14 P2007441M The same or similar components are denoted by the same reference numerals plus 200, and the description of the same components is omitted. The operation according to the third embodiment will be described in detail below.

In the closed state of the lever clamp mechanism shown in Fig. 24, by holding the lever handle portion 317c downwardly toward the substrate rotating lever 317, the lever head 317b can be rotated clockwise about the fixing member 323 from the state shown in Fig. 24, resulting in a clockwise rotation of the lever 317b. The roller 319 attached to the free end of the lever head 317b moves on the curved portion 305c of the ring member 305 in a direction away from the lever handle portion 317c to the recess 305e (gp, moving from the projection 305d to the recess 305e), releasing The connecting portion 305b is pressed so that the connecting portion 305b moves away from the substrate 301 by the upward thrust of the spring piece 325, thereby moving the two ring portions 305a of the ring member 305 away from the two fixed ring portions 303 that are fixedly mounted. , forming an open loop to open the lever clamp mechanism to access the loose-leaf paper.

On the contrary, in the open state of the lever mechanism shown in Fig. 27, by holding the lever handle portion 317c to rotate the lever 317 upward away from the substrate 301, the lever head 317b can be reversed from the fixing member 323 from the state shown in Fig. 27. The hour hand rotates, causing the roller 319 mounted to the free end of the lever head 317b to move away from the recess 305e (i.e., from the recess 305e to the protrusion 305d) in a direction toward the lever handle portion 317c, against the upward thrust of the spring piece 325. The connecting portion 305b is pressed against the substrate 301, and the two ring portions 305a of the ring member 305 are moved to a position in contact with the two opposite ring portions 303, as shown in Fig. 27, forming a closed loop to hold the leaflet. paper.

With respect to the conventional lever clamp mechanism, the lever clamp mechanism according to the second and third embodiments is provided with the recesses 205e, 305e on the curved portions 205c, 305c, so that the lever handle portions 217c, 317c are from the open position to the closed position. The flip angle is significantly better than the existing bar

15 P2007441M The lever mechanism is small so that the lever handle portions 217c, 317c do not interfere with the paper in the clip. Preferably, in the present invention, the depth of the recesses 205e, 305e is set such that the distance between the highest point of the protrusions 205d, 305d and the lowest point of the recesses 205e, 305e is greater than or equal to the diameter of the wire of the ring member. D (shown in Figures 20B, 20C, 31B and 31C). Further, preferably, in the present invention, the depth of the concave portions 205e, 305e is set such that the distance between the highest point of the protruding portions 205d, 305d and the lowest point of the concave portions 205e, 305e is greater than or equal to 4.5 mm.

Further, preferably, the lever handle portion of the lever clamp mechanism of the present invention has an inclination angle with respect to the lever body as small as possible so that the handle is tilted lower.

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 loop portions from being disengaged. These changes and modifications are intended to fall within the scope of the invention.

16 P2007441M

Claims

1. A lever clamp mechanism comprising:

Flat substrate

Two first ring portions spaced apart from each other and fixedly mounted to the substrate at one end;

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 second ring portions being integrally connected by a connecting portion, the connecting portion And including a curved portion bent toward a center of the substrate, wherein a middle portion of the curved portion protrudes upward to form a protruding portion, and the two first loop portions and the two second loop portions are respectively disposed opposite to each other, so that The first ring portion and the second ring portion opposite to each other when the ring member moves are respectively formed to 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 mechanism rotatably mounted to the boss for contact with the ring member, the lever mechanism for pressing the ring member against or away from the substrate to close or snore Lever clamp mechanism;

It is characterized in that a concave portion is formed on at least one side of the protruding portion on the curved portion.

2. The lever clamp mechanism according to claim 1, wherein a depth of the recess is set such that a distance between a highest point of the protrusion and a lowest point of the recess is greater than or equal to a manufacturing site The diameter of the wire of the ring member.

3. The lever clamp mechanism according to claim 2, wherein the lever mechanism

17 P2007441M The structure includes a lever, and an abutment portion mounted to the lever and engageable with the ring member, and when the lever clamp mechanism is closed, the abutment portion is from the recess on the curved portion The protrusion moves, and when the lever clamp mechanism is opened, the abutting portion moves from the protruding portion to the concave portion on the curved portion.

4. The lever arch mechanism of claim 3, wherein the lever comprises a lever body, a lever head extending obliquely upward from one end of the lever body, and an upward extending from the other end of the lever body a lever handle portion, and the lever mechanism is configured to move the abutment portion from the protrusion portion to the recess portion on the curved portion by rotating the handle portion upward away from the substrate to open the lever clamp mechanism, and The abutment portion is moved from the concave portion on the curved portion toward the protruding portion by rotating the handle portion downward toward the substrate to close the lever clamp mechanism.

The lever clamp mechanism according to claim 4, wherein the lever is rotatably attached to the boss at a free end of the lever head.

6. The lever arch mechanism according to claim 3, wherein the abutting portion is mounted at a joint portion of the lever body and the lever head.

7. The lever arch mechanism according to claim 2, wherein a blocking portion is formed on the convex portion for restricting a range of rotation of the lever head portion when the lever clamp mechanism is opened.

8. The lever clamp mechanism according to claim 2, wherein two blocking portions are formed on the convex portion for respectively restricting a rotation range of the lever head when the lever clamp mechanism is closed, And a range of rotation of the lever head when the lever clamp mechanism is opened.

18 P2007441M

The lever clamp mechanism according to claim 3, wherein the abutting portion is a cam portion.

The lever clamp mechanism according to claim 3, wherein the abutting portion is a roller.

The lever clamp mechanism according to claim 2, wherein the elastic member is a spring piece.

The lever clamp mechanism according to claim 2, wherein the elastic member is a spring wire.

13. The lever clamp mechanism according to claim 2, wherein a free end of one of the two mutually opposite ring portions is provided with a convex portion or a concave portion in the two mutually opposite ring portions A matching recess or projection is provided on the free end of the other ring portion.

14. The lever clamp mechanism according to claim 2, wherein the lever mechanism comprises a lever body, a lever head extending obliquely upward from an end of the lever body, and extending upward from the other end of the lever body a lever handle portion, and an abutment portion mounted to the lever and engageable with the ring member, and the lever mechanism is configured to abut the handle portion by rotating the handle portion downward toward the substrate Moving from the protruding portion to the concave portion on the curved portion to open the lever clamp mechanism, and rotating the handle portion upward from the substrate to move the abutting portion from the concave portion on the curved portion toward the protrusion The part moves to close the lever clamp mechanism.

15. The lever arch mechanism of claim 14, wherein the lever is rotatably mounted to the projection at a joint portion of the lever body and the lever head

19 P2007441M On the upper portion, the abutting portion is mounted at a free end of the lever head.

16. A lever clamp mechanism comprising:

Flat substrate

Two first ring portions spaced apart from each other in parallel and fixedly mounted to the substrate at one end;

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 second ring portions being integrally connected by a connecting portion, the connecting portion a curved portion bent toward a center of the substrate, wherein an intermediate portion of the curved portion protrudes upward to form a protrusion, and the two first ring portions and the two second ring portions are respectively disposed opposite to each other such that the The first ring portion and the second ring portion opposite to each other when the ring members move may respectively form a closed loop;

a raised portion that protrudes upward from the substrate;

a lever mechanism rotatably mounted to the boss for contact with the ring member for pressing the ring member against or away from the substrate to close or open the lever Clip mechanism

It is characterized in that at least one side of the protrusion is formed on the curved portion, and the depth of the recess is set such that a distance between a highest point of the protrusion and a lowest point of the recess Greater than or equal to 4.5mm.

17. The lever clamp mechanism of claim 16 wherein said lever mechanism includes a lever and abutment mounted to said lever and engageable with said ring member

20 P2007441M Abutting portion, and when the lever clamp mechanism is closed, the abutting portion moves from the concave portion on the curved portion to the protruding portion, and when the lever clamp mechanism is opened, the abutting portion is The protrusion moves toward the recess on the curved portion.

18. The lever clamp mechanism according to claim 17, wherein the lever includes a lever body, a lever head that is obliquely extended upward from an end of the lever body, and an upwardly extending from the other end of the lever body. a lever handle portion, and the lever mechanism is configured to move the abutment portion from the protrusion portion to the recess portion on the curved portion by rotating the handle portion upward away from the substrate to open the lever clamp mechanism, and The abutment portion is moved from the concave portion on the curved portion toward the protruding portion by rotating the handle portion downward toward the substrate to close the lever clamp mechanism.

19. The lever arch mechanism of claim 18, wherein the lever is rotatably mounted to the boss at a free end of the lever head.

The lever clamp mechanism according to claim 17, wherein the abutting portion is mounted at a joint portion of the lever body and the lever head.

A lever mechanism according to claim 16, wherein a stopper is formed on said projection for restricting a range of rotation of said lever head when said lever mechanism is opened.

The lever clamp mechanism according to claim 16, wherein two blocking portions are formed on the convex portion for respectively restricting a rotation range of the lever head when the lever clamp mechanism is closed, And a range of rotation of the lever head when the lever clamp mechanism is opened.

The lever clamp mechanism according to claim 17, wherein said abutting

21 P2007441M The part is a cam part.

The lever clamp mechanism according to claim 17, wherein the abutting portion is a roller.

The lever mechanism according to claim 16, wherein the elastic member is a spring piece.

The lever clamp mechanism according to claim 16, wherein the elastic member is a spring wire.

27. The lever clamp mechanism according to claim 16, wherein a free end of one of the two mutually opposite ring portions is provided with a convex portion or a concave portion in the two mutually opposite ring portions. A matching recess or projection is provided on the free end of the other ring portion.

The lever mechanism according to claim 16, wherein the lever mechanism comprises a lever body, a lever head extending obliquely upward from an end of the lever body, and an upward extending from the other end of the lever body a lever handle portion, and an abutment portion mounted to the lever and engageable with the ring member, and the lever mechanism is configured to cause the abutment portion by rotating the handle portion downward toward the substrate Moving from the protrusion to the recess on the curved portion to open the lever clamp mechanism, and rotating the handle portion upward from the substrate to the protrusion from the recess on the curved portion Move to close the lever clamp mechanism.

22 P2007441M