Bending nail plate of flat stapler and flat stapler

Abstract

The present invention relates to a bending plate for a flat stapler and the flat stapler. The upper surface of the bending plate is provided with a V-shaped flat staple groove. The notch width of the V-shaped flat staple groove is 1 mm to 2 mm, and the groove depth of the V-shaped flat staple groove is 0.3 mm to 0.5 mm. The V-shaped flat staple groove is used to limit the position of the staple legs and flatten the staple legs. The V-shaped flat staple groove can limit the position of the staple legs, prevent the staple legs from shaking or twisting and causing bending deformation, and can effectively prevent the occurrence of reversed staples. The wire diameters of currently commonly used staples are 0.511 mm, 0.574 mm, and 0.404 mm. When the staple legs are flattened by the V-shaped flat staple groove, the staple legs will protrude a portion outside the V-shaped flat staple groove, which facilitates the V-shaped flat staple groove to flatten the staple legs.

Description

Technical Field

[0001] The present invention relates to the technical field of flat staplers, and more specifically to a bent staple plate of a flat stapler and the flat stapler. Background Art

[0002] When a flat stapler is binding papers, the two staple legs are completely flattened, making the effective length of the staple legs that can be used to bind papers longer, and the number of papers that can be bound is also larger, and the bound documents can be placed flat. For example, the Chinese patent application number CN201610246349.2 discloses a flat stapler, including a base, a pressure cover and a nail box located between the base and the pressure cover, the rear end of the nail box is hinged to the rear end of the base, the rear end of the pressure cover is hinged to the rear end of the base, and a nail plate that can swing up and down relative to the base is provided between the base and the nail box, the front end of the nail plate has a flat nail opening, and two bent nail plates arranged side by side are provided in the flat nail opening, and the upper surface of the bent nail plate is provided with a flat nail straight groove, and the ends of the two bent nail plates away from each other are respectively hinged to the inner wall of the flat nail opening, and the front end of the base has a plate-shaped upward protrusion and the upper surface of the protrusion is flat. When the two bent nail plates rotate downward around their respective hinge points and the lower ends of the bent nail plates rest against the upper surface of the protrusion, the upper surfaces of the two bent nail plates are located on the same plane. When stapling, the flat stapler of this patent swings downward and the staples are pushed out of the staple box. The two nail legs of the staple pass through the paper and press downward into the flat nail straight groove on the upper surface of the corresponding bent nail plate in the flat nail opening. The two bent nail plates are forced to swing downward around the hinge point respectively. When the bent nail plate swings until its lower surface abuts against the upper surface of the raised portion at the front end of the base, the bent nail plate is blocked by the raised portion and swings upward in the opposite direction. In this way, the flat nail straight groove on the upper surface of the bent nail plate will bend and flatten the two nail legs of the staple, thereby achieving the final flat stapling function.

[0003] In the above patented technology, a flat nail straight groove is provided on the upper surface of the bent nail plate. When nailing, the two nail legs of the staples often bend and deform due to excessive force when passing through multiple sheets of paper and pressing against the flat nail straight groove, which is a phenomenon of reversed nails. This phenomenon occurs frequently and is difficult to avoid. After the reversed nail phenomenon occurs, the bent nail plate cannot completely flatten the two nail legs, resulting in failure of flat nailing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a bending plate of a flat stapler so that the two nail legs of the staple will not be bent or deformed after passing through multiple sheets of paper, thereby effectively preventing the occurrence of the reversed nail phenomenon.

[0005] The technical solution of the present invention is to provide a bending nail plate of a flat stapler, wherein a V-shaped flat nail groove is provided on the upper surface of the bending nail plate, the groove width of the V-shaped flat nail groove is 1 mm to 2 mm, and the groove depth of the V-shaped flat nail groove is 0.3 mm to 0.5 mm. The V-shaped flat nail groove is used to limit the nail feet of the staples and flatten the nail feet of the staples.

[0006] Compared with the prior art, the bending plate of the flat stapler of the present invention has the following advantages: a V-shaped flat staple groove is provided on the upper surface of the bending plate. After the staples pass through multiple sheets of paper, they are pressed against the V-shaped flat staple groove. The V-shaped flat staple groove can limit the staple legs, preventing the staple legs from shaking or twisting and bending and deformation, and effectively preventing the occurrence of reversed staples. Currently commonly used staple models are 24 / 6, 23 / 6, and 26 / 6, and the corresponding wire diameters, i.e., the thicknesses of the staple legs after being flattened, are 0.511 mm, 0.574 mm, and 0.404 mm, respectively. The notch width of the V-shaped flat staple groove is 1 mm to 2 mm, and the groove depth of the V-shaped flat staple groove is 0.3 mm to 0.5 mm. When the staple legs of currently commonly used staples are flattened by the V-shaped flat staple groove, the staple legs will protrude a portion outside the V-shaped flat staple groove, which is conducive to the V-shaped flat staple groove flattening the staple legs.

[0007] Preferably, the V-shaped flat nail groove has a notch width of 1.1 mm, a groove depth of 0.4 mm, and an angle of 108 degrees between the two groove walls. With this structure, for the most commonly used 26 / 6 size staples, the flattened thickness of the staple foot is approximately 0.4 mm. When combined with the V-shaped flat nail groove of this structure, the flattened staple foot protrudes approximately 0.18 mm above the V-shaped flat nail groove, facilitating the V-shaped flat nail groove to flatten the staple foot.

[0008] Preferably, the bent nail plate is provided with a hinge hole, and a sliding arc surface is provided on one side of the lower surface of the bent nail plate. The sliding arc surface is used to contact and slide relative to the external resistance member. With this structure, the bent nail plate can be hinged to the flat stapler through the hinge hole, so that the bent nail plate can rotate about the hinge point under the action of the external resistance member. When the bent nail plate rotates, the sliding arc surface contacts and slides relative to the external resistance member, and the sliding arc surface can prevent the bent nail plate from being obstructed in rotation.

[0009] Preferably, a paper-protecting arc surface is provided on one side of the upper surface of the nail-bending plate. The paper-protecting arc surface is configured to contact and slide relative to the paper surface. With this structure, when the nail-bending plate rotates, the paper-protecting arc surface slides over the lower surface of the paper, the V-shaped flat nail groove gradually presses the nail legs, and the upper surface of the nail-bending plate gradually contacts the lower surface of the paper. The provision of the paper-protecting arc surface helps protect the paper and prevents the upper surface of the nail-bending plate from being subjected to excessive resistance from the paper, which could hinder the rotation of the nail-bending plate.

[0010] Preferably, the upper surface of the bent nail plate is provided with a flat nailing surface, which is tangent to and connected to the circular arc surface of the paper guard, and is flush with the notch of the V-shaped flat nailing groove. The flat nailing surface is used to contact the paper surface during flat nailing. The lower surface of the bent nail plate is provided with a supporting surface, which is used to contact the external resistance member during flat nailing. The flat nailing surface is parallel to the supporting surface. With this structure, the final position and posture of the supporting surface can be controlled by the external resistance member. In this way, the final position and posture of the flat nailing surface and the V-shaped flat nailing groove can be controlled, ensuring that the V-shaped flat nailing groove on the upper surface of the bent nail plate can bend and flatten the two nail legs of the staple, thereby achieving the final flat nailing function.

[0011] The technical problem to be solved by the present invention is to provide a flat stapler, in which the two nail legs of the staple will not bend or deform after passing through multiple sheets of paper during stapling, thereby effectively preventing the occurrence of the reversed staple phenomenon.

[0012] The technical solution of the present invention is to provide a flat stapler, including a pressure cover, a nail box, a nail plate, and a base arranged in sequence from top to bottom, the rear end of the pressure cover is hinged to the rear end of the base, the rear end of the nail box is hinged to the rear end of the base, the nail box is used to place staples, the front end of the pressure cover is provided with a nail pressing piece, the nail pressing piece is opposite to the front end of the nail box up and down, the nail pressing piece is used to push the staples out of the nail box, the nail plate is arranged between the base and the nail box and can swing up and down relative to the base, the front end of the nail plate has a flat nail opening, the two bent nail plates of the flat stapler as described above are hinged side by side in the flat nail opening through a hinge hole, and a resisting piece is further provided on the base, the resisting piece is used to resist the two bent nail plates, and the V-shaped flat nail grooves in the two bent nail plates are opposite to the nail pressing piece up and down.

[0013] Compared with the prior art, the flat stapler of the present invention has the following advantages: when flat stapling, the pressure cover is pressed down, the nail pressing piece pushes the staple out of the staple box and makes the staple hit the V-shaped flat nail groove on the upper surface of the bent nail plate after passing through multiple sheets of paper. The V-shaped flat nail groove can limit the nail legs of the staple, preventing the nail legs from shaking or twisting and bending and deformation, and can effectively prevent the occurrence of reverse nails. The nail pressing piece also pushes the two bent nail plates and the nail plate to swing downward through the staples until the two bent nail plates contact the resistance piece. The resistance piece blocks the downward movement of the two bent nail plates and causes the bent nail plates to rotate upward. The V-shaped flat nail groove on the upper surface of the bent nail plate gradually bends and flattens the two nail legs of the staple, achieving the final flat stapling function.

[0014] Preferably, when the two bent nail plates of the flat stapler are not in contact with the abutment, the angle between them is 60 to 90 degrees. After the two bent nail plates of the flat stapler come into contact with the abutment, they can rotate toward each other about their respective hinge points until the notches of the two V-shaped flat nail grooves are located on the same plane. With this structure, when the staple penetrates multiple sheets of paper, the two staple legs will bend along the angle between the two bent nail plates, which facilitates the smooth penetration of the staple legs. The two bent nail plates rotating toward each other can cause the notches of the V-shaped flat nail grooves to be located on the same plane, which facilitates the flattening of the two staple legs.

[0015] Preferably, when the bent nail plates of the two flat staplers are not in contact with the abutment, the angle between them is 80 degrees. This structure is conducive to the two nail legs of the staples penetrating the paper smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the bent nail plate of the flat stapler of the present invention.

[0017] Figure 2 for Figure 1 Front view of .

[0018] Figure 3 for Figure 1 Top view of .

[0019] Figure 4 for Figure 1 Left view of .

[0020] Figure 5 The present invention is a schematic diagram of the two bent nail plates of the flat stapler before stapling.

[0021] Figure 6 The present invention is a schematic diagram of the two bent nail plates of the flat stapler during stapling.

[0022] Figure 7 The figure is a schematic diagram of the two bent nail plates of the flat stapler of the present invention after stapling.

[0023] As shown in the figure: 1. Bending nail plate, 1-1. V-shaped flat nail groove, 1-2. Hinge hole, 1-3. Flat nail surface, 1-4. Paper protection arc surface, 1-5. Abutment surface, 1-6. Sliding arc surface, 2. Nail pressing piece, 3. Staples, 4. Paper. DETAILED DESCRIPTION

[0024] In order to better understand the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0025] In the drawings, the thickness, size and shape of objects have been slightly exaggerated for ease of explanation. The drawings are only examples and are not drawn strictly to scale.

[0026] It should also be understood that the terms "comprising," "having," "including," and "containing," when used in this specification, indicate the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof. Furthermore, expressions such as "...at least one of" when following a list of listed features modify the entire list, rather than modifying the individual elements in the list.

[0027] Example 1:

[0028] like Figures 1 to 4 As shown in the figure, the bent nail plate of the flat stapler of the present invention includes a bent nail plate 1, a hinge hole 1-2 is provided on the bent nail plate, the hinge hole 1-2 is close to the end of one end of the bent nail plate, and a supporting surface 1-5 is provided on the lower surface of the bent nail plate 1. A smooth sliding arc surface 1-6 is provided on the end of the lower surface of the bent nail plate 1 away from the hinge hole 1-2. The supporting surface 1-5 is tangent to and connected to the sliding arc surface 1-6. The upper surface of the bent nail plate is provided with a flat nail surface 1-3. The upper surface of the bent nail plate 1 is close to the hinge hole 1-2. A smooth paper protection arc surface 1-4 is provided at one end of the connecting hole 1-2, the flat nail surface 1-3 is tangent to and connected to the paper protection arc surface 1-4, the flat nail surface 1-3 is parallel to the abutting surface 1-5, and a V-shaped flat nail groove 1-1 is provided on the flat nail surface 1-3. The flat nail surface 1-3 is flush with the notch of the V-shaped flat nail groove 1-1, the notch width of the V-shaped flat nail groove 1-1 is 1 mm, and the groove depth is 0.5 mm, or the notch width of the V-shaped flat nail groove 1-1 is 2 mm, and the groove depth is 0.3 mm.

[0029] When flat nailing, a resistance piece can be set under the bent nail plate, and the resistance piece can push the bent nail plate 1 to rotate around the hinge hole 1-2. During this process, the sliding arc surface 1-6 first contacts the external resistance piece and slides relative to the external resistance piece, and the paper protection arc surface 1-4 contacts the paper surface and slides relative to the paper surface. The nail feet of the staples are pressed into the V-shaped flat nail groove and are gradually bent by the V-shaped flat nail groove. The V-shaped flat nail groove limits the nail feet of the staples to prevent the nail feet of the staples from shaking or twisting during the bending process and bending and deformation, which can effectively prevent the occurrence of inverted nails. Until the bent nail plate 1 rotates until the abutment surface 1-5 is completely in contact with the external resistance piece, and the flat nail surface 1-3 is completely in contact with the paper surface, the V-shaped flat nail groove completely flattens the nail feet of the staples.

[0030] Example 2:

[0031] The bending plate of the flat stapler of this embodiment differs from that of Example 1 in that the V-shaped flat staple groove 1-1 has a notch width of 1.1 mm and a depth of 0.4 mm, resulting in an included angle of 108 degrees between the two groove walls. For the most commonly used 26 / 6 size staples, the flattened foot is approximately 0.4 mm thick. When used with the V-shaped flat staple groove of this embodiment, the flattened foot protrudes approximately 0.18 mm above the V-shaped flat staple groove, facilitating the V-shaped flat staple groove's ability to flatten the foot.

[0032] Example 3:

[0033] The flat stapler of the present invention (not shown) includes a pressure cover, a nail box, a nail plate, and a base, which are arranged in sequence from top to bottom. The rear end of the pressure cover is hinged to the rear end of the base, and the rear end of the nail box is hinged to the rear end of the base. Staples 3 are placed in the nail box. The front end of the pressure cover is provided with a nail pressing piece 2. The lower surface of the nail pressing piece 2 is flat and opposite to the front end of the nail box. The nail plate is arranged between the base and the nail box and can swing up and down relative to the base. The front end of the nail plate has a flat nail opening. Two bent nail plates of the flat stapler as described in Example 1 or 2 are hinged side by side in the flat nail opening through hinge holes. When the two bent nail plates 1 are in a natural state, the angle between the two bent nail plates is 60 degrees, 80 degrees or 90 degrees. A resistance member is also provided on the base. The upper surface of the resistance member is flat and opposite to the lower surfaces of the two bent nail plates 1. The V-shaped flat nail grooves 1-1 in the two bent nail plates are opposite to the nail pressing piece 2 up and down.

[0034] The stapling and flat stapling process of the flat stapling machine of the present invention is as follows: Figures 5 to 7 As shown in the figure, several sheets of paper 4 are placed between the nail box and the nail plate, and the pressure cover is pressed down. The nail pressing piece 2 pushes the staples 3 out of the nail box and makes the staples hit the V-shaped flat nail groove 1-1 on the upper surface of the bent nail plate 1 after passing through all the papers 4. The V-shaped flat nail groove 1-1 limits the nail feet of the staples to prevent the nail feet from shaking or twisting and bending deformation, thereby preventing the occurrence of reverse nailing. Continue to press the pressure cover down, the two nail feet will bend along the angle between the two bent nail plates, and the nail pressing piece 2 pushes the two bent nail plates 1 and the nail plate to swing downward through the staples until the two bent nail plates conflict with the upper surface of the resistance piece, and the resistance piece blocks the two bent nail plates from moving downward and makes the two The bent nail plates rotate toward each other around their respective hinge points until the abutment surfaces 1-5 are completely in contact with the external abutment. At this time, the flat nail surface 1-3 is also completely in contact with the paper surface, and the notches of the two V-shaped flat nail grooves are located on the same plane. During this process, the V-shaped flat nail groove 1-1 and the nail pressing piece 2 on the upper surface of the bent nail plate press the staples below and above the staples respectively, and the two nail legs of the staples are gradually bent and flattened, and the final flat nailing function is achieved; the pressure cover is released, so that the pressure cover and the nail plate return to their original positions, and the two bent nail plates also rotate downward around their respective hinge points until the angle in the natural state is restored, and the staples remain on the paper 4 with the two nail legs flattened.

[0035] The above are only specific embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. If the present invention is modified or replaced with equivalents without departing from the spirit and scope of the present invention, they should be included in the scope of protection of the claims of the present invention.

Claims

1. A flat stapler, comprising a pressure cover, a nail box, a nail plate, and a base, which are sequentially arranged from top to bottom. The rear end of the pressure cover is hinged to the rear end of the base, the rear end of the nail box is hinged to the rear end of the base, the nail box is used to place staples (3), the front end of the pressure cover is provided with a nail pressing piece (2), the nail pressing piece (2) and the front end of the nail box are vertically opposite, and the nail pressing piece (2) is used to push the staples (3) out of the nail box, the nail plate is arranged between the base and the nail box and can swing up and down relative to the base, and the front end of the nail plate has a flat nail opening; characterized in that Two bent nail plates are arranged in the flat nail opening, and the upper surface of the bent nail plate is provided with a V-shaped flat nail groove (1-1), the groove width of the V-shaped flat nail groove (1-1) is 1.1 mm, the groove depth is 0.4 mm, and the angle between the two groove walls is 108 degrees. A hinge hole (1-2) is provided on the bent nail plate, and the two bent nail plates are hinged side by side in the flat nail opening through the hinge hole (1-2). When the two bent nail plates are not in contact with the conflicting member, the angle between them is 80 degrees. The two The V-shaped flat nail grooves (1-1) in the bent nail plate are opposite to the nail pressing plate (2) in the upper and lower directions; a resisting member is also provided on the base, and the resisting member is used to resist the two bent nail plates. A sliding arc surface (1-6) is provided on one side of the lower surface of the bent nail plate. The sliding arc surface (1-6) is used to contact the resisting member and can slide relative to the external resisting member. After the two bent nail plates resist the resisting member, they can rotate toward each other around their respective hinge points until the notches of the two V-shaped flat nail grooves (1-1) are located on the same plane.

2. The side-stitch stapler according to claim 1, wherein: A paper protecting circular arc surface (1-4) is provided on one side of the upper surface of the bent nail plate. The paper protecting circular arc surface (1-4) is used for contacting the paper surface and can slide relative to the paper surface.

3. The side-stitch stapler according to claim 2, wherein: The upper surface of the bent nail plate is provided with a flat nail surface (1-3), the flat nail surface (1-3) is tangent to and connected with the paper protection arc surface (1-4), and the flat nail surface (1-3) is flush with the notch of the V-shaped flat nail groove (1-1), and the flat nail surface (1-3) is used to contact the paper surface during flat nailing. The lower surface of the bent nail plate is provided with a supporting surface (1-5), and the supporting surface (1-5) is used to contact an external resistance member during flat nailing. The flat nail surface (1-3) and the supporting surface (1-5) are parallel.

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