Safety stapler with multiple needle types

Abstract

The present invention provides a variety of needle-type safety staplers, including a pressing plate, a support frame, a base, a first rotating shaft, a rotating needle disk, a needle pressure piece, a second rotating shaft and a bending plate; one end of the pressing plate and one end of the support frame are rotatably connected to one end of the base through the first rotating shaft, the other end of the pressing plate is connected to the needle pressure piece, the other end of the support frame is connected to the rotating needle disk through the second rotating shaft, the rotating needle disk can rotate around the second rotating shaft, one or more needle grooves are arranged on the rotating needle disk, a needle type stapler is placed in a needle groove, and a bending plate is arranged on the other end of the base. The present invention has a simple and reasonable structure, and a rotating needle disk is arranged on the support frame, a plurality of needle grooves are arranged on the rotating needle disk, and different needle types of staplers are placed in different needle grooves, so that a plurality of staplers are integrated on a stapler, which is suitable for binding of different file thicknesses.

Description

Technical Field

[0001] The invention relates to the field of office supplies manufacturing, in particular to a multi-needle safety stapler. Background Art

[0002] As a document binding tool, stapler is a fairly common office stationery product and is often used in real work and study life.

[0003] Traditional staplers have two major drawbacks. First, the single-size needle slot has poor adaptability to the thickness of the document, and it is often necessary to manually replace staplers of different sizes, which is laborious and requires many processes. Buying multiple staplers of different sizes increases office costs and takes up space. Second, the staple opening often turns outward for slightly thicker documents, and hands are often cut when holding documents. Therefore, it is very necessary to propose a new technical solution to solve these problems.

[0004] The patent document with publication number CN208914033U discloses a stapler, including a base, a pressing handle, a nail channel, a nail storage slot and a transparent cover, wherein the pressing handle is hinged to the base at one end and the other end is a free end; the nail channel is located between the base and the pressing handle, and one end is hinged to the base and the other end is a free end, and the nail channel is used to place staples; the nail storage slot is provided on the surface of the pressing handle away from the base, and is used to store staples; and the transparent cover is used to cover or open the nail storage slot. The stapler disclosed in the patent document can increase the storage capacity of staples, but only has one type of stapler, and has poor adaptability to the thickness of documents. Summary of the invention

[0005] In view of the defects in the prior art, an object of the present invention is to provide a multi-needle safety stapler.

[0006] A multi-needle safety stapler provided according to the present invention comprises a pressing plate, a support frame, a base, a first rotating shaft, a rotating needle disk, a needle pressing piece, a second rotating shaft and a bending plate;

[0007] One end of the pressing plate and one end of the support frame are rotatably connected to one end of the base through the first rotating shaft, the other end of the pressing plate is connected to the needle pressing piece, and the other end of the support frame is connected to the rotating needle disk through the second rotating shaft. The rotating needle disk can rotate around the second rotating shaft, and one or more needle grooves are arranged on the rotating needle disk. A needle-type stapler is placed in a needle groove, and a bending plate is arranged on the other end of the base.

[0008] Preferably, the center of the rotating needle disk is connected to the second rotating shaft, and the needle grooves are arranged along the direction radiating outward from the center of the rotating needle disk.

[0009] Preferably, the needle groove is provided with a guide rail, an ejector pin and a needle groove spring;

[0010] The guide rails are arranged on the two side walls of the needle groove, and the ejector pin is arranged in the guide rails. The ejector pin is connected to one end of the needle groove spring, and the other end of the needle groove spring is connected to one end of the needle groove. The ejector pin can slide in the guide rails under the action of the needle groove spring. The position between the ejector pin and the other end of the needle groove is used to hold the stapler, and a needle outlet hole is arranged at the bottom of the other end of the needle groove.

[0011] Preferably, one end of the needle slot having the needle hole is arranged close to the second rotating shaft.

[0012] Preferably, a first limiting device is provided at a position corresponding to each needle slot on the rotating needle disk, and a second limiting device is provided on the support frame, and the first limiting device can interact with the second limiting device to achieve needle slot limiting.

[0013] Preferably, the first limiting device comprises a limiting spring and a ball, a mounting hole is provided at the bottom of the rotating needle disk near the needle slot, the limiting spring is arranged in the mounting hole, one end of the limiting spring is connected to the bottom of the mounting hole, and the other end of the limiting spring is connected to the ball;

[0014] The second limiting device includes a limiting groove, and the limiting groove can interact with the ball;

[0015] The first limiting device includes two states: contraction and extension;

[0016] In the tightened state, the ball and the support frame interact with each other, the limit spring is compressed, and the ball is completely or partially located in the mounting hole;

[0017] In the extended state, the ball interacts with the limiting groove, the limiting spring is extended, and the ball is partially located in the mounting hole and partially located in the limiting groove.

[0018] Preferably, the diameter of the mounting hole is equal to the diameter of the ball; the limiting groove is hemispherical to match the ball, and the diameter of the hemispherical shape is equal to the diameter of the ball.

[0019] Preferably, the bending plate is provided with a pin pressing groove, and there are two pin pressing grooves, which are symmetrically arranged on the left and right.

[0020] Preferably, the angle between the section at one end of the pin pressing grooves that are close to each other and the plane where the bending plate is located is 25-40 degrees.

[0021] Preferably, a chamfer is provided at one end of the pin pressing grooves close to each other, and the center of the chamfer is located above or below the plane of the bending plate;

[0022] When the center of the chamfer is located above the plane of the bending plate, the angle between the tangent of the arc at the end of the chamfer and the upper side of the plane of the bending plate on the side of the pin pressing groove where the chamfer is located is 80-90 degrees;

[0023] When the center of the chamfer is below the plane of the bending plate, the angle between the tangent of the arc at the end of the chamfer and the upper side of the plane of the bending plate on one side of the pin pressing groove where the chamfer is located is an acute angle.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The structure of the present invention is simple and reasonable. A rotating needle disk is arranged on the support frame, and a plurality of needle grooves are arranged on the rotating needle disk. Staples of different needle types are placed in different needle grooves, so that a plurality of staplers are integrated on one stapler, which is suitable for binding documents of different thicknesses.

[0026] 2. The present invention provides a limiting device so that the position of the needle groove is relatively fixed after it is rotated into position, thereby preventing the rotating needle disk from rotating during binding and affecting normal binding.

[0027] 3. The present invention sets the angle between the inner side of the stitch pressing groove and the plane of the bending plate to 25-40 degrees, that is, the inward cone angle of the stitch pressing groove is set to 25-40 degrees, so that the staplers can be pressed tighter, effectively reducing the outward turning of the stapler opening, avoiding the situation where the stitches scratch the hands, and improving the safety of use.

[0028] 4. The present invention sets a chamfer at the end of the stitch pressing groove. The setting of the chamfer ensures that the needle tip is effectively embedded in the document after binding, avoids the needle tip opening turning outward and prevents it from scratching fingers, thereby effectively improving the safety of binding. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0030] Figure 1 It is a schematic diagram of the structure of the present invention.

[0031] Figure 2 It is a schematic structural diagram of the pressing plate and the base of the present invention.

[0032] Figure 3 It is a cross-sectional view of the pin pressing groove of the present invention.

[0033] The figure shows:

[0034] Press plate 1 First rotating shaft 4 Second rotating shaft 7

[0035] Support frame 2 Rotating needle plate 5 Bending plate 8

[0036] Base 3 Needle pressing piece 6 Needle pressing groove 9 DETAILED DESCRIPTION

[0037] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0038] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] The present invention discloses a multi-needle safety stapler, which mainly includes a pressing plate 1, a support frame 2, a base 3, a first rotating shaft 4, a rotating needle disk 5, a needle pressing piece 6, a second rotating shaft 7 and a bending plate 8. The pressing plate 1, the support frame 2 and the base 3 are rotatably connected through the first rotating shaft 4. There is a raised strip at the end of the pressing plate 1 as a needle pressing piece 6, which is used to press the stapler. The rotating needle disk 5 is located at the front end of the support frame 2, which can be designed to be square or round, and is rotatably connected to the support frame 2 through the second rotating shaft 7. Two to four needle grooves can be designed on the rotating needle disk 5, and each needle groove is respectively configured with staplers of different lengths. In the needle groove, the stapler is fixed by a guide rail, an ejector pin and a needle groove spring. When it is necessary to bind documents of different thicknesses, the rotating needle disk 5 only needs to be rotated to the corresponding position to perform binding. Therefore, compared with the prior art, the present invention can adapt to the binding of multiple documents of different thicknesses, and its adaptability is stronger. In addition, a bending plate 8 is installed at one end of the base away from the rotating shaft, and a stitch pressing groove 9 is provided on the upper end surface of the bending plate 8. Compared with the prior art, the stitch pressing groove 9 has an increased inward taper and an end chamfer design, and appropriately shortens the horizontal stroke of the stitch to ensure that the needle tip is effectively embedded in the document after binding, thereby avoiding the occurrence of hand scratches and greatly improving the safety of the binding effect.

[0040] According to the present invention, a multi-needle type safety stapler is provided, such as Figure 1-2As shown, it includes a pressing plate 1, a support frame 2, a base 3, a first rotating shaft 4, a rotating needle disk 5, a needle pressing piece 6, a second rotating shaft 7 and a bending plate 8; one end of the pressing plate 1 and one end of the support frame 2 are rotatably connected to one end of the base 3 through the first rotating shaft 4, the other end of the pressing plate 1 is connected to the needle pressing piece 6, the other end of the support frame 2 is connected to the rotating needle disk 5 through the second rotating shaft 7, the rotating needle disk 5 can rotate around the second rotating shaft 7, one or more needle grooves are arranged on the rotating needle disk 5, a needle type of stapler is placed in a needle groove, and a bending plate 8 is arranged on the other end of the base 3.

[0041] like Figure 1 As shown, the center of the rotating needle disk 5 is connected to the second rotating shaft 7, and the needle groove is arranged along the direction radiating outward from the center of the rotating needle disk 5. The needle groove is provided with a guide rail, an ejector and a needle groove spring; the guide rail is arranged on the two side walls of the needle groove, the ejector is arranged in the guide rail, the ejector is connected to one end of the needle groove spring, and the other end of the needle groove spring is connected to one end of the needle groove. The ejector can slide in the guide rail under the action of the needle groove spring, and the position between the ejector and the other end of the needle groove is used to hold staplers, and a needle outlet hole is arranged at the bottom of the other end of the needle groove. The end of the needle groove having the needle outlet hole is arranged close to the second rotating shaft 7.

[0042] In one embodiment, four needle grooves are arranged on the rotating needle disk 5, and each needle groove is used to place staples of different lengths and specifications, which can be suitable for binding of various file thicknesses. The rotating needle disk 5 is circular, and the four needle grooves are arranged radially along the rotating needle disk 5 and are evenly distributed on the rotating needle disk 5. The side of the needle groove with the pinhole is arranged close to the center of the rotating needle disk 5, that is, the end of the needle groove with the pinhole is close to the second rotating shaft 7. The stapler can be replaced by rotating the needle disk. Preferably, the distance between the second rotating shaft 7 and the end of the needle groove with the pinhole is 7 mm, and this distance can also be fine-tuned up and down by 20% as needed. In a variation, the rotating needle disk 5 is square. Preferably, the depths of the four needle grooves are different to prevent the wrong placement of staples of different lengths. Preferably, the needle groove spring is mainly nested in the guide rail, and the front end is connected to the ejector pin and has a certain rigidity. It is in a compressed state throughout the whole process to ensure the normal installation of the stapler.

[0043] A first limiting device is provided at the position corresponding to each needle slot on the rotating needle disk 5, and a second limiting device is provided on the support frame 2. The first limiting device can interact with the second limiting device to limit the needle slot. The first limiting device includes a limiting spring and a ball. A mounting hole is provided at the bottom of the rotating needle disk 5 near the position of the needle slot. The limiting spring is provided in the mounting hole. One end of the limiting spring is connected to the bottom of the mounting hole, and the other end of the limiting spring is connected to the ball. The second limiting device includes a limiting groove, which can interact with the ball. The first limiting device includes two states: contraction and extension. In the contraction state, the ball interacts with the support frame 2, the limiting spring is compressed, and the ball is completely or partially located in the mounting hole. In the extension state, the ball interacts with the limiting groove, the limiting spring is extended, and the ball is partially located in the mounting hole and partially located in the limiting groove. The diameter of the mounting hole is equal to the diameter of the ball. The limiting groove is a hemispherical shape matching the ball, and the diameter of the hemispherical shape is equal to the diameter of the ball.

[0044] The first limiting device is set in one-to-one correspondence with the needle groove, and a limiting groove is set on the support frame 2. The first limiting device adopts the setting of ball + limiting spring. When the needle groove on the rotating needle disk 5 rotates to the corresponding position, the length direction of the needle groove is parallel to the length direction of the pressing plate 1. The needle hole and the pin pressing groove 9 are located on the movement path of the needle pressing plate. The limiting spring on the upper part of the ball is extended to push the ball into the limiting groove to play a limiting role, so as to prevent the rotating needle disk 5 from rotating during binding, causing the needle groove position to shake and affect normal binding. When the needle groove needs to be replaced, the rotating needle disk 5 is rotated, and the torque of the rotation causes the ball to gradually disengage from the limiting groove and return to the mounting hole. At this time, the limit is released, waiting for the new needle groove to rotate to the corresponding position.

[0045] like Figure 2-3 As shown, the bending plate 8 is provided with a pin pressing groove 9, and the pin pressing grooves 9 are two and are symmetrically arranged. The angle between the section of the end of the pin pressing groove 9 close to each other and the plane where the bending plate 8 is located is 25-40 degrees. Preferably, as Figure 3 As shown, the angle is 30 degrees. The ends of the pin pressing grooves 9 that are close to each other are chamfered, and the center of the chamfer is located above or below the plane of the bending plate 8; when the center of the chamfer is located above the plane of the bending plate 8, as shown in FIG. Figure 3 As shown in A2, the angle between the tangent of the arc at the end of the chamfer and the plane above the bending plate 8 on one side of the pin pressing groove 9 where the chamfer is located is 80-90 degrees. Preferably, the angle is 90 degrees. When the center of the chamfer is below the plane of the bending plate 8, as shown in FIG. Figure 3 As shown in A1, the angle between the tangent line of the arc line at the end of the chamfer and the plane above the bending plate 8 on one side of the pin pressing groove 9 where the chamfer is located is an acute angle. Figure 3The chamfer size in the figure can be used as a reference, and the actual numerical parameters can be adjusted according to the overall size. Compared with the prior art, the pin pressing groove 9 has an increased inward taper and end chamfer design, and the horizontal stroke of the pin is appropriately shortened to ensure that the needle tip is effectively embedded in the document after binding, thereby avoiding the phenomenon of scratching the hand and greatly improving the safety of the binding effect.

[0046] The distances from the needle pressing piece on the pressing plate 1, the needle outlet hole of the needle groove on the support frame 2, and the stitch pressing groove 9 on the bending plate 8 to the first rotating shaft 4 are equal, that is, the needle outlet hole and the stitch pressing groove 9 are located on the movement path of the needle pressing piece. The needle pressing piece 6 staples the staples in the needle groove into the documents, and the stitch pressing groove 9 presses the stitches of the staples that have stapled the documents, thereby realizing the binding of the documents.

[0047] The multi-needle safety stapler proposed in the present invention is equipped with a rotating needle disk 5 with multiple needle grooves built in the stapler head, and staplers of different lengths are respectively configured to meet the binding needs of documents of different thicknesses, thereby solving the problem of poor adaptability of a single needle groove to document thickness, reducing the tedious operation of frequently replacing staplers due to changes in document thickness, improving the binding efficiency, and effectively reducing the occurrence of stapler opening eversion, which is beneficial to improving the safety of the binding effect. In addition, the present invention increases the inward taper design and the end chamfer design of the base pin clamping groove 9, and appropriately shortens the pin stroke to ensure that the needle tip is effectively embedded in the document after binding, avoids the needle tip opening eversion, and prevents it from scratching fingers, thereby effectively improving the safety of the binding effect. Therefore, compared with the prior art, the present invention has better adaptability to document thickness and higher safety in the use of the binding effect.

[0048] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A multi-needle safety stapler, characterized in that: It comprises a pressing plate (1), a support frame (2), a base (3), a first rotating shaft (4), a rotating needle disk (5), a needle pressing sheet (6), a second rotating shaft (7) and a bending plate (8); One end of the pressing plate (1) and one end of the support frame (2) are rotatably connected to one end of the base (3) via a first rotating shaft (4); the other end of the pressing plate (1) is connected to a needle pressing piece (6); the other end of the support frame (2) is connected to a rotating needle disk (5) via a second rotating shaft (7); the rotating needle disk (5) is capable of rotating around the second rotating shaft (7); one or more needle grooves are provided on the rotating needle disk (5); a stapler of a needle type is placed in a needle groove; and a bending plate (8) is provided on the other end of the base (3); The bending plate (8) is provided with a pin pressing groove (9), and there are two pin pressing grooves (9), and the two pin pressing grooves (9) are symmetrically arranged on the left and right; A chamfer is provided at one end of the pin pressing groove (9) close to each other, and the center of the chamfer is located above or below the plane of the bending plate (8); When the center of the chamfer is located above the plane of the bending plate (8), the angle between the tangent of the arc at the end of the chamfer and the plane above the bending plate (8) on the side of the pin pressing groove (9) where the chamfer is located is 80-90 degrees; When the center of the chamfer is located below the plane of the bending plate (8), the angle between the tangent of the arc at the end of the chamfer and the plane above the bending plate (8) on one side of the pin pressing groove (9) where the chamfer is located is an acute angle.

2. The multi-needle safety stapler according to claim 1, characterized in that: The center of the rotating needle disk (5) is connected to the second rotating shaft (7), and the needle grooves are arranged along the direction radiating outward from the center of the rotating needle disk (5).

3. The multi-needle safety stapler according to claim 1, characterized in that: The needle groove is provided with a guide rail, an ejector pin and a needle groove spring; The guide rails are arranged on the two side walls of the needle groove, and the ejector pin is arranged in the guide rails. The ejector pin is connected to one end of the needle groove spring, and the other end of the needle groove spring is connected to one end of the needle groove. The ejector pin can slide in the guide rails under the action of the needle groove spring. The position between the ejector pin and the other end of the needle groove is used to hold the stapler, and a needle outlet hole is arranged at the bottom of the other end of the needle groove.

4. The multi-needle safety stapler according to claim 3, characterized in that: One end of the needle slot having the needle hole is arranged close to the second rotating shaft (7).

5. The multi-needle safety stapler according to claim 1, characterized in that: A first limiting device is provided at a position corresponding to each needle slot on the rotating needle disk (5), and a second limiting device is provided on the support frame (2). The first limiting device can interact with the second limiting device to achieve needle slot limiting.

6. The multi-needle safety stapler according to claim 5, characterized in that: The first limiting device comprises a limiting spring and a ball bearing. A mounting hole is provided at the bottom of the rotating needle disk (5) near the needle groove. The limiting spring is arranged in the mounting hole. One end of the limiting spring is connected to the bottom of the mounting hole, and the other end of the limiting spring is connected to the ball bearing. The second limiting device includes a limiting groove, and the limiting groove can interact with the ball; The first limiting device includes two states: contraction and extension; In the contracted state, the ball and the support frame (2) interact with each other, the limit spring is compressed, and the ball is completely or partially located in the mounting hole; In the extended state, the ball interacts with the limiting groove, the limiting spring is extended, and the ball is partially located in the mounting hole and partially located in the limiting groove.

7. The multi-needle safety stapler according to claim 6, characterized in that: The diameter of the mounting hole is equal to the diameter of the ball; the limiting groove is hemispherical to match the ball, and the diameter of the hemispherical is equal to the diameter of the ball.

8. The multi-needle safety stapler according to claim 1, characterized in that: The angle between the cut surface at one end of the pin pressing groove (9) close to each other and the plane where the bending plate (8) is located is 25-40 degrees.

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