CN101224683A - lever clamp mechanism - Google Patents

Abstract

A lever clamp mechanism comprising: a substrate; the lever clamp mechanism comprises two first ring parts which are fixedly arranged on a base plate and are spaced and parallel, and a ring part which is movably arranged on the base plate, wherein the ring part comprises two second ring parts which are spaced and parallel, and the two first ring parts and the two second ring parts are respectively arranged opposite to each other, so that the first ring parts and the second ring parts which are respectively opposite to each other can form a closed ring when the lever clamp mechanism is closed; an elastic member having one end mounted to the base plate and the other end abutting against the ring member, for urging the ring member away from the base plate by an elastic force; a boss protruding upward from the substrate; and a lever fitted with an abutting portion, the lever being rotatably mounted to the boss such that the abutting portion is in contact with the ring member; the lever is provided with a first operation end and a second operation end which can be operated by a user. According to the lever clamp mechanism of the present invention, the force required to operate the lever can be reduced, and the lever clamp mechanism is also convenient to use.

Description

lever clamp mechanism

technical field

The invention relates to a lever clamp mechanism.

Background technique

The lever clip mechanism is a type of stationery widely used to store paper sheets such as loose-leaf papers. The applicant's Chinese patent 01124645.6 discloses a lever clamp mechanism comprising a substantially flat base plate; two first ring portions spaced apart from each other and fixedly mounted to one longitudinal side of the base plate at one end thereof, Two first ring portions extend substantially vertically upward from the base plate and are slightly bent at their other ends to form a bend; Two rings, the two second rings extend substantially vertically upwards from the base plate and also form additional bends at their other ends to cooperate with the bends at the other ends of the two first rings when the lever clamp mechanism is closed Forming a closed loop, the two second ring parts are integrally connected to each other at one end close to the substrate by a connecting part so that the two second ring parts move together, and the connecting part is formed at its middle part toward the center of the substrate A curved generally U-shaped bend; a substantially upright raised portion formed at a central portion of the substrate by cutting the substrate and bending the cut portion upward; one side of which is mounted adjacent to the cut formed on said other longitudinal side of the substrate The other side of the groove elastically abuts against a spring leaf on the underside of the substantially U-shaped bend of the connecting portion, the spring leaf is used to push the connecting portion away from the plane of the substrate, causing the two The second rings move together away from the fixedly mounted two first rings to open the lever clamp mechanism; and a lever rotatably mounted to said boss, said lever mounted to said boss There are rollers on the ends on the top. By pressing down and turning the lever, the roller can overcome the upward thrust of the spring plate and move away from the handle of the lever to a position where the connecting portion is pressed against the base plate, thereby driving the two The second ring parts move together to a position in contact with the two fixedly mounted first ring parts, forming a closed ring; by turning the lever upwards away from the base plate, the roller can be moved in a direction towards the handle part of the lever to disengage. The position of the connecting part pressed against, so that the connecting part moves away from the base plate under the upward thrust of the spring leaf, causing the two second ring parts to move together and leave the fixedly installed two first ring parts section, forming an opening loop to open the lever clamp mechanism.

In this prior art lever clamp mechanism, one end of the lever is mounted on the boss and the other end of the lever is used to operate the lever clamp mechanism. When in use, the user can only open or close the lever clamp mechanism by operating the only operating end of the lever, which requires a relatively large force, and in some cases (for example, the user is at the end opposite to the operating end of the lever) Not easy to operate.

Therefore, it is necessary to improve the lever clamp mechanism in the prior art.

Contents of the invention

The present invention is proposed in view of the problems existing in the above-mentioned lever clamp mechanism of the prior art.

Therefore, it is an object of the present invention to provide a lever clamp mechanism which can be opened or closed with a relatively small force applied and which is also convenient for the user to operate the lever clamp mechanism.

According to the present invention, a kind of lever clamp mechanism is provided, and described lever clamp mechanism comprises:

flat substrate;

Two mutually spaced apart and parallel first ring parts fixedly installed on the base plate, and a ring part movably mounted on the said base plate, said ring part including two mutually spaced apart and parallel first ring parts Two ring parts, the two first ring parts and the two second ring parts are arranged opposite to each other, so that when the lever clamp mechanism is closed, the first ring part and the second ring part respectively opposite to each other can form a closed loop;

one end is mounted on the base plate, and the other end is against the elastic member of the ring part, which is used to push the ring part away from the base plate by elastic force;

a raised portion protruding upward from the substrate; and

a lever provided with an abutment, said lever being rotatably mounted to said protrusion such that said abutment is in contact with said 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 operating end and a second operating end that can be operated by the user, the user can simultaneously operate the first operating end and the second operating end with two hands, thereby being different from a single hand. The force required to operate the lever is reduced compared to operating the lever. Alternatively, the user can operate the lever with one hand at either end of the lever clamp mechanism for ease of use.

Description of drawings

1 is an exploded perspective view of a lever clamp mechanism according to the present invention;

2 is a perspective view of a lever clamp mechanism in a closed state according to the present invention;

Fig. 3 is another side perspective view of the lever clamp mechanism in a closed state according to the present invention;

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

Figure 5 is a front view of the lever clamp mechanism in a closed state according to the present invention;

6 is a top view of the lever clamp mechanism in a closed state according to the present invention;

7 is a perspective view of the lever clamp mechanism in an open state according to the present invention;

8 is another side perspective view of the lever clamp mechanism in an open state according to the present invention;

9 is a perspective view of the bottom side of the lever clamp mechanism in an open state according to the present invention;

Fig. 10 is another perspective view of the bottom side of the lever clamp mechanism in an open state according to the present invention;

11 is a front view of the lever clamp mechanism in an open state according to the present invention;

12 is a top view of the lever clamp mechanism in an open state according to the present invention;

13 is a perspective view of a lever of a lever clamp mechanism according to the present invention;

Figure 14 is the front view of the lever of the lever clamp mechanism according to the present invention;

Figure 15 is an end view of the lever of the lever clamp mechanism according to the present invention; and

16 is a top view of a lever of a lever clamp mechanism according to the present invention.

Detailed ways

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 generally flat base plate 101 . On one longitudinal side of the base plate 101 are fixedly mounted two mutually spaced apart and parallel first ring portions 103 extending substantially vertically upward from the base plate 101 and slightly bent at their free ends to form a bend. A ring member 105 is movably mounted on the other longitudinal side of the base plate 101 . The ring member 105 includes two second ring parts 105a spaced apart from each other and parallel to each other, and a connecting part 105b connecting the two second ring parts 105a into one body. Each second ring portion 105a is respectively formed with a bent portion at its free end, so that the two second ring portions 105a of the ring member 105 can cooperate with the corresponding opposite first ring portion 103 fixedly mounted on the base plate 101 to form closed loop. The two second ring portions 105a of the ring member 105 are integrally connected to each other by a connection portion 105b at their other ends close to the substrate. The middle portion of the connecting portion 105b is bent substantially horizontally toward the center of the substrate to form a substantially U-shaped bent portion 105c, and the middle portion of the bent portion 105c slightly protrudes upward to form a protrusion 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 on the substrate 101 by cutting or punching both ends of one side of the substrate mounting ring member 105 and turning the cut or punched substrate portion upward and outward to form two rolled portions 107 .

A substantially upright raised portion 109 is formed at the center of the substrate 101 by cutting or punching near the longitudinal sides of the substrate mounting ring member 105 and bending the portion of the substrate to be cut or punched substantially upright from the substrate. A cutout 111 is formed on the substrate 101 due to upward bending of the raised portion 109 . Also formed near the longitudinal side edges of the substrate mounting ring member 105 are elongated grooves 113, the function of which will be described below. One or more holes 115 may also be formed in the base plate for securing the lever clamp mechanism to the cover of a folder or notebook or the like.

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

In the assembled lever clamp mechanism 100, the two first ring parts 103 are fixedly installed on one longitudinal side of the base plate 101 by such as 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 two rolled-up portions 107, and the middle part of the U-shaped bending portion 105c of each connecting portion 105b is substantially located near the raised portion 109, so that The ring member 105 is movably mounted on the other longitudinal side of the base plate 101 such that the two second ring portions 105a of the ring member 105 are aligned with the fixedly mounted two first ring portions 103, respectively. A lever 117 equipped with a 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 bent portion 105c of the ring member 105 when the lever 117 is turned. A generally slightly arcuately bent leaf spring 125 is retained on the base plate 101 by being inserted into the elongated slot 113 on the base plate 101 at one end, and the other end thereof is placed under the bent portion 105c of the ring member 105 and elastically rests against the ring member 105. The bent portion 105c of the member 105 is used to push the bent portion 105c of the ring member 105 upward by elastic force. Of course, the installation position of the spring piece 125 is not limited to the position shown, as long as the spring piece 125 can abut against the lower side of the bent portion 105c. In addition, the shape of the spring piece 125 is not limited to the shown shape, as long as the spring piece 125 can abut against the lower side of the bent portion 105c to generate an upward thrust.

Different from the lever clamp mechanism in the prior art, the lever 117 of the lever clamp mechanism 100 according to the present invention has two operating ends that can be grasped by the user, that is, the first operating end 117a and the 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. Another position of the lever 117 between the first operating end 117 a and the second operating end 117 b is mounted on the protrusion 109 through a fixing member 123 . 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, so as to be easily grasped by the user. Preferably, as shown in FIGS. 5 and 6 , both the first operating end 117 a and the second operating end 117 b extend beyond the corresponding first ring portion 103 and second ring portion 105 a. Although the levers shown in Figures 13-16 are generally plate-shaped, other shaped levers, such as elongated rods, are also possible. According to the present invention, the maximum distance that 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 not greater than 40mm. When the operating end extends beyond the corresponding first ring portion 103 and second ring portion 105a, it will interfere with the paper sheet held by the lever clamp mechanism, thereby hindering the turning of the paper sheet.

In the open state of the lever clamp mechanism shown in FIGS. 7-12 , by holding the first operating end 117a of the lever 117 to turn the lever 117 upward away from the substrate, and holding the second operating end 117b of the lever 117 to turn the lever downward toward the substrate 117, or one hand holds the first operating end 117a of the lever 117 and turns the lever 117 upwards away from the substrate while the other hand holds the second operating end 117b of the lever 117 and turns the lever 117 downward toward the substrate, which can make the lever 117 rotates counterclockwise around the fixing member 123 from the state shown in FIG. 105d, to overcome the upward thrust of the spring piece 125 and press the connecting part 105b against the base plate 101, so as to drive the two second ring parts 105a of the ring part 105 to move together to a position in contact with the two opposite first ring parts 103 , as shown in Figure 2, forming a closed loop to hold the loose-leaf paper. On the contrary, in the closed state of the lever clamp mechanism shown in FIGS. Turn the lever 117 away from the substrate, or hold the first operating end 117a of the lever 117 with one hand and turn the lever 117 downward toward the substrate while the other hand holds the second operating end 117b of the lever 117 and turn the lever 117 upward away from the substrate, All can make the lever 117 rotate clockwise around the fixing part 123 from the state shown in FIG. Loosen the pressing against the connecting portion 105b, so that the connecting portion 105b moves away from the base plate 101 under the upward thrust of the spring leaf 125, and drives the two second ring portions 105a of the ring member 105 to move away from the two oppositely fixedly installed The first ring portion 103 forms an opening ring to open the lever clamp mechanism for accessing loose-leaf pages.

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

According to the present invention, when the lever clamp mechanism moves between the open state and the closed state, the angle range of rotation of the first operating end 117a and the second operating end 117b is less than or equal to 45°. Furthermore, the rod 119 travels a horizontal distance over the ring member 105 of no greater than 8.5 mm when the lever clamp mechanism is moved between the open and closed positions.

In order to make the gap between the opposing ring portions of the open lever clamp mechanism as large as possible for easy access to loose-leaf pages, there is preferably a protrusion on the curved portion 105c of the ring member 105 towards which the roller 119 will move when the lever clamp mechanism is opened. A recess 105e is formed on one side of 105d for accommodating a roller 119 when the lever clamp mechanism is opened. For ease of processing, recesses 105e may also be symmetrically formed on both sides of the protrusion 105d. Preferably, the vertical distance between the lowest point of the concave surface of the recess 105 e and the highest point of the convex surface of the protrusion 105 d is made equal to or greater than the diameter of the ring member 105 .

When the lever clamp was in the closed state, the distance between the first operating end 117a and the ring in the vertical direction was at least 8mm, so as to avoid hindering the turning of the paper along the ring; and the second operating end 117b and the base plate 101 The distance between them in the vertical direction is at least 6 mm, so as to facilitate the grasping of the second operating end. When the lever clamp is in a fully open state, the distance between the second operating end 117b and the ring portion in the vertical direction is at least 8mm, so as to avoid hindering access or turning over the paper; and the first operating end 117a and the base plate 101 The distance between them in the vertical direction is at least 6mm, so as to facilitate the grasping of the first operating end.

In order to facilitate the user's grip and improve the comfort of operation, one or both of the first operating end 117a and the second operating end 117b of the lever may be provided with a sheath 117d made of rubber, plastic or other flexible materials. . Colored sheaths in different colors are available upon request for easy identification. Of course, the first operating end 117a and the second operating end 117b may also be directly painted in different colors.

Although the preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings in a non-limiting manner, it should be understood that various changes and modifications can be made to the present invention without departing from the scope defined by the claims of the present invention. . For example, a cam may be mounted at the end of the lever instead of a roller. In addition, protrusions and recesses can also be provided at the free ends of the opposite rings to prevent the mutually mating rings from being disengaged. These changes and modifications should all fall within the protection scope of the present invention.

Claims (28)

1. lever clamp mechanism, described lever clamp mechanism comprises:

Flat substrate;

Be fixedly mounted in that on the described substrate two are spaced from each other and parallel first ring portion and movably be installed in ring component on the described substrate, described ring component comprises also two the second parallel ring portions that are spaced from each other, described two first ring portions and described two second ring portions relatively are provided with respectively mutually, make that mutual respectively relative first ring portion and second ring portion can form closed hoop when described lever clamp mechanism was closed;

One end is installed on the described substrate, its other end is against the elastic component of described ring component, is used for by elastic force described ring component being pushed away described substrate;

From the lug boss of described substrate to upper process; And

The lever of butting section is housed, and described lever is pivotally mounted on the described lug boss, makes described butting section contact with described ring component;

Wherein, described lever has first operating side and second operating side that is available for users to operate.

2. lever clamp mechanism as claimed in claim 1 is characterized in that, described butting section is installed on the described lever on the position between first operating side and second operating side.

3. lever clamp mechanism as claimed in claim 1 is characterized in that, the another location of described lever between first operating side and second operating side is installed on the described lug boss.

4. lever clamp mechanism as claimed in claim 1 is characterized in that, in first operating side and second operating side one extends to outside the closed hoop of corresponding mutual relative first ring portion and the formation of second ring portion.

5. lever clamp mechanism as claimed in claim 1 is characterized in that, first operating side and second operating side all extend to outside the closed hoop of corresponding mutual relative first ring portion and the formation of second ring portion.

6. as claim 4 or 5 described lever clamp mechanisms, it is characterized in that the operating side extends to the first corresponding ring portion and the ultimate range outside second ring portion is not more than 40mm.

7. lever clamp mechanism as claimed in claim 1 is characterized in that, described lever is a sheet.

8. lever clamp mechanism as claimed in claim 1 is characterized in that, described lever is an elongated rod-shaped.

9. lever clamp mechanism as claimed in claim 1 is characterized in that, is formed with at least one outstanding stop part on the described lever.

10. lever clamp mechanism as claimed in claim 1 is characterized in that, is formed with two outstanding stop parts on the described lever.

11. lever clamp mechanism as claimed in claim 1 is characterized in that, is formed with at least one outstanding stop part on the described lug boss.

12. lever clamp mechanism as claimed in claim 1 is characterized in that, is formed with two outstanding stop parts on the described lug boss.

13. lever clamp mechanism as claimed in claim 1 is characterized in that, described two second ring portions link into an integrated entity by connecting portion, and described connecting portion comprises towards the bend of described substrate center bending.

14. lever clamp mechanism as claimed in claim 13 is characterized in that, the mid portion of the described bend projection that makes progress forms jut, closed lever clamp mechanism when described butting section is pressed against on the jut.

15. lever clamp mechanism as claimed in claim 14 is characterized in that, forms recess on the bend of jut one side that the butting section is shifted to when opening lever clamp mechanism.

16. lever clamp mechanism as claimed in claim 14 is characterized in that, forms the recess that is positioned on the described bend respectively in described jut both sides.

17., it is characterized in that the vertical range between the peak of the minimum point of the concave surface of described recess and the convex surface of described jut is equal to, or greater than the diameter of described ring component as claim 15 or 16 described lever clamp mechanisms.

18. lever clamp mechanism as claimed in claim 1 is characterized in that, the slewing area of first operating side and second operating side is equal to or less than 45 °.

19. lever clamp mechanism as claimed in claim 1 is characterized in that, when lever clamp mechanism was mobile between open mode and closure state, the horizontal range that move on described ring component described butting section was not more than 8.5mm.

20. lever clamp mechanism as claimed in claim 1, it is characterized in that, when first operating side or second operating side were in from the immediate position of described substrate, the spacing distance of first operating side or the described substrate in the vertical direction of second operating side distance was at least 6mm.

21. lever clamp mechanism as claimed in claim 1, it is characterized in that, when first operating side or second operating side were in from the immediate position of described ring portion, the spacing distance of first operating side or the described ring portion in the vertical direction of second operating side distance was at least 8mm.

22. lever clamp mechanism as claimed in claim 1 is characterized in that, at least one in first operating side and second operating side is provided with the flexible material sheath.

23. lever clamp mechanism as claimed in claim 22 is characterized in that, described sheath is colored sheath.

24. lever clamp mechanism as claimed in claim 1 is characterized in that, first operating side and second operating side have different colours.

25. lever clamp mechanism as claimed in claim 1 is characterized in that, described elastic component is a spring leaf.

26. lever clamp mechanism as claimed in claim 1 is characterized in that, described elastic component is a spring wire.

27. lever clamp mechanism as claimed in claim 1 is characterized in that, described butting section is a cam part.

28. lever clamp mechanism as claimed in claim 1 is characterized in that, described butting section is a roller.

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