Staple processing mechanism of electric stapler and electric stapler

Abstract

The present invention discloses a staple handling mechanism for an electric stapler, comprising a drive mechanism, a transmission mechanism, a pop-up staple channel assembly, a controller, and an ejection mechanism. The drive mechanism is connected to an ejection switch of the pop-up staple channel assembly via the ejection mechanism. When the controller controls the drive mechanism to rotate in the stapling direction, the ejection mechanism does not activate the staple channel assembly. When the controller controls the drive mechanism to rotate in the opposite direction of stapling, the transmission mechanism activates the ejection switch via the ejection mechanism to eject the staple channel of the staple channel assembly, thereby facilitating the removal of jammed staples. Also disclosed is an electric stapler. The ejection mechanism is provided on an existing electric stapler. When a staple is jammed, the mechanism of the existing electric stapler can be utilized to reversely activate the drive mechanism and eject the staple channel assembly via the ejection mechanism, thereby allowing the staples stuck in the staple channel assembly to be removed smoothly, conveniently resolving the problem of staple jams.

Description

Technical Field

[0001] The invention relates to an electric stapler, in particular to a staple processing mechanism thereof. Background Art

[0002] Existing electric staplers, such as the electronically controlled stapler disclosed in Chinese patent document CN2369864Y, comprise a base, a motor, a gear transmission mechanism, an eccentric assembly, a lever mechanism, a blade assembly, a staple track assembly, and a controller. A microswitch is installed at the paper feed of the base. The microswitch, controlled by the controller, drives the motor, which is connected to the gear transmission mechanism. The gear transmission mechanism drives the eccentric assembly, which in turn drives the blade assembly to move up and down, ejecting the staples from the staple track assembly. During stapling, each document triggers the microswitch, causing the motor to rotate once, completing the stapling process. Specifically, existing electric staplers generally comprise a base, a driver (motor), a transmission mechanism (gear transmission mechanism, eccentric assembly, lever mechanism), a blade assembly, a pop-up staple track assembly, and a controller. The controller activates the motor, which, through the transmission mechanism, changes the motor's rotational direction into up and down movement of the blade assembly. The blade assembly then ejects the staples from the staple track assembly, completing the stapling process. When staples are needed, the pop-up staple channel assembly can be operated to pop out the inner staple channel, thereby facilitating the installation of staples.

[0003] Because electric staplers are prone to staple jams, users often find the staple path stuck and difficult to remove. Forcibly removing the stapler can deform the upper blade or even completely damage the binding mechanism, rendering the electric stapler unusable. Therefore, improvements are needed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a staple processing mechanism for an electric stapler, so that the staple jam problem can be conveniently solved.

[0005] The present invention also provides an electric stapler, which can conveniently solve the problem of staple jamming.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a staple processing mechanism of an electric stapler, characterized in that it includes a driving mechanism, a transmission mechanism, a pop-up staple channel assembly, a controller, and an ejection mechanism. The transmission mechanism is connected to an ejection switch of the pop-up staple channel assembly through the ejection mechanism. When the controller controls the driving mechanism to rotate in the stapling direction, the ejection mechanism does not activate the staple channel assembly; when the controller controls the driving mechanism to rotate in the opposite direction of stapling, the transmission mechanism activates the ejection switch through the ejection mechanism to eject the staple channel of the staple channel assembly, thereby facilitating the removal of the jammed staples.

[0007] Preferably, the pop-up mechanism includes a side wheel, a lever, and a pressure pin, and the pop-up switch is a button lock assembly. The side wheel is fixed to the transmission mechanism and rotates with the transmission mechanism. The middle part of the lever is rotatably fixed to the machine base, one end of which is driven by the side wheel, and the other end is unidirectionally transmitted with the pressure pin. The pressure pin is guided by the machine base and set on the button lock assembly of the nail track assembly. When the side wheel rotates in the stapling direction, one end of the lever is driven downward and the other end is moved upward to leave the pressure pin; when the side wheel rotates in the opposite direction of stapling, one end of the lever is driven upward and the other end is pressed down on the pressure pin. The downward movement of the pressure pin unlocks the button lock assembly of the nail track assembly and pops out the nail track of the nail track assembly.

[0008] Preferably, the pop-up mechanism includes a side wheel, a lever, and a pressure pin. The side wheel is fixed on the transmission gear of the transmission mechanism, and the middle part of the lever is rotatably fixed on the machine base. One end of the lever is driven by the side wheel, and the other end is connected to the pressure pin. The pressure pin is guided by guide grooves on both sides of the machine base and is set on the key lock of the nail channel assembly. When the side wheel rotates in the stapling direction, one end of the lever is driven downward and the other end is moved upward to leave the pressure pin; when the side wheel rotates in the opposite direction of stapling, one end of the lever is driven upward and the other end is pressed down on the pressure pin. The downward movement of the pressure pin unlocks the key lock of the nail channel assembly and pops out the nail channel of the nail channel assembly.

[0009] More specifically, a cam is provided on the circumference of the side wheel. When the side wheel rotates in the stapling direction, the cam drives one end of the lever downward and the other end downward to leave the pressing pin; when the side wheel rotates in the opposite direction of stapling, the cam drives one end of the lever upward and the other end presses the pressing pin downward, and the downward movement of the pressing pin unlocks the button lock of the nail track assembly and pops out the nail track of the nail track assembly.

[0010] Preferably, a disc is provided on the outside of the cam, and the disc limits one end of the lever, thereby preventing the lever from separating from the cam.

[0011] Preferably, a restoring mechanism is provided between the lever and the base, and when the lever loses external force, the restoring mechanism enables the lever to return to its original position.

[0012] More specifically, the return mechanism is a tension spring, one end of which is connected to the machine base, and the other end is connected to one end of the lever, so that the lever can be reset when the lever loses its driving force.

[0013] Preferably, the pop-up nail channel assembly includes an inner nail channel, an outer nail channel, a long pin pusher, a nail pusher, a nail pusher spring, and a button lock assembly. The inner nail channel is placed in the outer nail channel and can slide in the outer nail channel. A hook groove is provided at the tail of the inner nail channel. One end of the long pin pusher is fixed to the tail of the outer nail channel and the other end is fixed to the front of the outer nail channel. The nail pusher spring is sleeved on the long pin pusher, one end of which is limited by the tail of the outer nail channel and the other end is fixed on the nail pusher. The nail pusher is placed in the inner nail channel and can slide in the inner nail channel. The staple is placed between the head of the inner nail channel and the front end of the nail pusher, so that the stapling of the nail channel assembly is consistent with the staple processing mechanism; the button lock assembly includes a button, a button lock spring, and a fixing pin. A pressing portion is provided at one end of the button and a hook portion is provided at the other end. A hook groove corresponding to the hook portion is provided at the tail of the inner nail channel of the nail channel assembly. The hook portion hooks the hook groove in the normal state. One end of the button lock spring is limited by the inside of the button and the other end is limited by the tail end of the nail channel.

[0014] An electric stapler is also provided, which includes the staple processing mechanism.

[0015] Compared with the prior art, the present invention has the following advantages: since an ejection mechanism is provided on the existing electric stapler, when a staple is stuck, the mechanism of the existing electric stapler can be utilized to reversely start the driving mechanism and eject the staple channel in the staple channel assembly through the ejection mechanism, thereby enabling the staples stuck in the staple channel assembly to be smoothly removed, thereby conveniently solving the staple jam problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a perspective view of an electric stapler according to an embodiment of the present invention.

[0017] FIG2 is a front view of the electric stapler according to the embodiment of the present invention.

[0018] FIG3 is a top view of the electric stapler according to the embodiment of the present invention.

[0019] FIG. 4 is a schematic structural diagram of the staple processing mechanism during normal binding according to an embodiment of the present invention.

[0020] FIG5 is a schematic structural diagram of the motor, transmission mechanism, staple track assembly, and blade assembly of the electric stapler according to an embodiment of the present invention.

[0021] FIG6 is a perspective view of the combination of the transmission gear and the side wheel according to an embodiment of the present invention.

[0022] FIG7 is an exploded schematic diagram of the transmission gear and side wheels according to an embodiment of the present invention.

[0023] FIG8 is a schematic structural diagram of the staple processing mechanism when staples are clamped according to an embodiment of the present invention.

[0024] Figure 9 is an enlarged view of part A in Figure 8.

[0025] FIG. 10 is a perspective view of a pop-up stapler channel assembly of an electric stapler according to an embodiment of the present invention.

[0026] FIG. 11 is a structural diagram of a pop-up stapler assembly of an electric stapler in a normal state according to an embodiment of the present invention.

[0027] FIG. 12 is a schematic structural diagram of the pop-up stapler assembly of the electric stapler according to an embodiment of the present invention when the stapler is popped out. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] For the convenience of description, the directional words used below, such as front, back, clockwise, counterclockwise, etc., are described according to the existing drawings. They are not limitations on the scope of protection of the present invention and can still change accordingly according to different visual directions of the drawings.

[0030] As shown in FIG1-12 , the electric stapler includes a base 2 , a motor 3 , a transmission mechanism 4 , an ejection mechanism 5 , a staple channel assembly 8 , a blade assembly 9 , and a controller (not shown).

[0031] The main improvement of the present invention lies in the staple processing mechanism of the electric stapler, which includes a driving mechanism, a transmission mechanism, a pop-up staple channel assembly, a controller, and an ejection mechanism.

[0032] The motor 3 , transmission mechanism 4 , ejection mechanism, nail channel assembly 8 , blade assembly 9 , and controller are all fixed on the machine base 2 .

[0033] The ejection mechanism includes a side wheel 5 , a lever 6 , and a pressing pin 65 .

[0034] A cam 51 is provided on the circumference of the side wheel 50, with a fixed portion in the middle, which is fixed to the transmission mechanism through the fixed portion. In this embodiment, the transmission mechanism 4 includes a group of gears, wherein a connecting groove 411 is provided at the center of one of the transmission gears 41, which cooperates with the side wheel central shaft 52. The side wheel central shaft 52 is inserted into the connecting groove 411, so that the transmission gear 41 and the side wheel 5 are combined together, so that they can be driven by the transmission mechanism to rotate synchronously in forward and reverse directions.

[0035] The middle portion of the lever 6 is rotatably fixed to the machine base 2 via a pin 66 , one end 61 of the lever 6 is driven by the driving cam 51 of the side wheel 5 , and the other end 62 is connected to the top of the pressing pin 65 .

[0036] The pressing pin 65 is guided by the guide grooves 21 on both sides of the machine base and is set on the button lock assembly 80 of the nail channel assembly.

[0037] When the controller controls the driving mechanism to rotate in the stapling direction, the side wheels rotate in the stapling direction, driving one end 61 of the lever 6 downward and causing the other end 62 to move upward and leave the pressing pin 65, and the entire ejection mechanism does not activate the key lock 80, thereby also not activating the entire nail track assembly; when the controller controls the driving mechanism to rotate in the opposite direction of stapling, the side wheels rotate in the opposite direction of stapling, driving one end 61 of the lever 6 upward and causing the other end 62 to press the pressing pin downward, and the pressing pin 65 moves downward to unlock the key lock 80 of the nail track assembly and eject the nail track.

[0038] A disc 53 is further provided on the outside of the cam 51 , and the disc 53 limits one end 61 of the lever 6 , thereby preventing the lever 6 from being separated from the cam 51 .

[0039] A tension spring 7 is also provided. One end 71 of the spring is connected to the base 2, and the other end 72 is connected to the end 61 of the lever 6. This allows the lever 6 to return to its original position if the lever 6 loses its driving force. In this embodiment, the lever end 61 is shaped like a tree spur, and the other end 72 of the spring is connected to the spur branch 63, which facilitates connection.

[0040] The base 2 is provided with a column 74 at the middle position corresponding to the tension spring 7, so that the tension spring 7 can move with the column 74 as a fulcrum when the end 61 of the lever 6 moves upward, and the tension spring 7 will not bounce randomly.

[0041] The nail channel assembly 8 includes an inner nail channel 81, an outer nail channel 82, a long pin pusher 83, a nail pusher 84, a nail pusher spring 85, and a button lock assembly 80. The inner nail channel 81 is placed in the outer nail channel and can slide in the outer nail channel. A hook groove 811 is provided at the tail of the inner nail channel 81. One end of the long pin pusher 83 is fixed to the tail of the outer nail channel, and the other end is fixed to the front of the outer nail channel. The nail pusher spring 85 is sleeved on the long pin pusher 83, one end of which is limited by the tail of the outer nail channel 82, and the other end is fixed to the nail pusher 84. The nail pusher 84 is placed in the inner nail channel and can slide in the inner nail channel. The staples are placed between the head of the inner nail channel and the front end of the nail pusher 84.

[0042] The staple channel assembly 8 is fixed to the base of the machine frame through the outer staple channel 82 and cooperates with the blade assembly. The blades in the blade assembly push out the staples installed in the inner staple channel 81 and staple.

[0043] A nail channel handle 816 is further provided at the other end of the inner nail channel 81 , and the inner nail channel 81 can be moved by the nail channel handle 816 .

[0044] The button lock assembly 80 includes a button 86, a button lock spring 87, and a fixing pin 88. A pressing portion 861 is provided at one end of the button 86, and a hook portion 862 is provided at the other end. In the normal state, the hook portion 862 hooks the tail hook groove 811 of the inner nail channel 81. One end of the button lock spring 87 is limited by the inner side of the button 86, and the other end is limited by the tail end 821 of the nail channel.

[0045] The pressing portion 861 of the button 86 is provided with a pressing pin 65 . When the pressing portion 861 is pressed downward by the pressing pin 65 , the button 86 overcomes the spring force and rotates outward, thereby disengaging the button hook portion 862 from the tail hook groove 811 of the inner nail channel 81 .

[0046] The above-mentioned blade assembly is a common electric stapler mechanism and has nothing to do with the technical problem to be solved by the present invention. Reference may be made to its common structure or the structure disclosed in CN2369864Y, and will not be described in detail here.

[0047] The ejection mechanism 5 includes a swinging tooth 51 and a lever 6. The swinging tooth 51 is rotatably fixed to the circumference of the side wheel 64 by screws. The lever 6 is arranged below the swinging tooth 51 and is movably connected to the base 1 and can move back and forth on the base 1.

[0048] The lever 6 is provided with a push portion 521 at the rear thereof, which cooperates with one end of the button 41 of the button lock assembly 4. When the lever 6 moves to the right, the push portion 521 causes one end of the button 41 to rotate upward, causing the hook portion 412 at the end to disengage from the tail hook groove 811 of the inner nail channel 81.

[0049] A return mechanism is further provided between the lever 6 and the base 1. In this embodiment, the return mechanism comprises a return spring 53. The front end of the return spring 53 is limited by the end of the lever 6, and the rear end of the return spring 53 is limited by the bracket 13 on the base 1. The lever 6 is also provided with a guide groove 523, into which a guide pin 54 is inserted. The guide pin 54 is fixed to the base 1 (not shown). In this way, when the lever 6 is moved to the right by the swing tooth 51, it can be guided by the guide pin 54 and compress the return spring 53. When the lever 6 loses the external force of the swing tooth 51, the return force of the return spring 53 resets the lever 6.

[0050] During normal stapling, the electric stapler operates similarly to the electric stapler disclosed in Chinese patent document CN2369864Y, and reference can be made to the description in the aforementioned document. The newly added operating process of the present invention is as follows: During stapling, the controller activates the motor to rotate forward, driving the transmission mechanism. The side wheel 5 rotates clockwise, and the convex portion 51 on its circumference hits the lever 6, driving the lever 6 to rotate. After the front end 61 of the lever 6 is downward, the rear end 62 is raised, clearing the pressing pin 65, allowing normal stapling. Figure 4 .

[0051] When a staple jam occurs in the electric stapler and needs to be processed, the controller starts the motor to reverse and drive the transmission mechanism to rotate. The side wheel 5 rotates counterclockwise, and the protrusion 51 on its circumference hits one end 61 of the lever 6 when rotating, driving the lever 6 to rotate upward. The front end 61 of the lever 6 is lifted upward, and the rear end 62 presses the pressing pin 65 downward. The pressing pin 65 drives the button lock 80 downward, causing one end of the button 86 to rotate upward, so that the hook portion 862 of the end is disengaged from the tail hook groove 811 of the inner nail channel 81, and the inner nail channel 81 is ejected under the action of the staple pusher spring 85. Therefore, the staples stuck in the stapler can be easily removed, as shown in Figure 8.

Claims

1. A staple handling mechanism for an electric stapler, characterized in that: The ejection mechanism comprises a driving mechanism, a transmission mechanism, a pop-up nail channel assembly, a controller, and an ejection mechanism, wherein the transmission mechanism is connected to the ejection switch of the pop-up nail channel assembly through the ejection mechanism, and when the controller controls the driving mechanism to rotate in the stapling direction, the ejection mechanism does not cause the nail channel assembly to move; when the controller controls the driving mechanism to rotate in the opposite direction of stapling, the transmission mechanism activates the ejection switch through the ejection mechanism to eject the nail channel of the nail channel assembly, thereby facilitating the removal of the staples; the ejection mechanism comprises a side wheel, a lever, and a pressing pin, and the ejection switch is a button lock assembly, the side wheel is fixed on the transmission mechanism and rotates with the transmission mechanism, the middle part of the lever is rotatably fixed on the machine base, one end of the lever is driven by the side wheel, and the other end is unidirectionally transmitted with the pressing pin, the pressing pin is guided by the machine base and is arranged on the button lock assembly of the nail channel assembly, when the side wheel rotates in the stapling direction, one end of the lever is driven downward and the other end is moved upward to leave the pressing pin; when the side wheel rotates in the opposite direction of stapling, one end of the lever is driven upward and the other end is pressed downward to press the pressing pin, and the downward movement of the pressing pin unlocks the button lock assembly of the nail channel assembly and ejects the nail channel of the nail channel assembly.

2. The staple handling mechanism of the electric stapler according to claim 1, characterized in that: The ejection mechanism includes a side wheel, a lever, and a pressing pin. The side wheel is fixed on the transmission gear of the transmission mechanism. The middle part of the lever is rotatably fixed on the machine base. One end of the lever is driven by the side wheel, and the other end is connected to the pressing pin. The pressing pin is guided by the guide grooves on both sides of the machine base and is set on the button lock assembly of the nail track assembly. When the side wheel rotates in the stapling direction, one end of the lever is driven downward and the other end is moved upward to leave the pressing pin; when the side wheel rotates in the opposite direction of stapling, one end of the lever is driven upward and the other end is pressed downward to press the pressing pin. The downward movement of the pressing pin unlocks the button lock assembly of the nail track assembly and pops out the nail track of the nail track assembly.

3. The staple handling mechanism of the electric stapler according to claim 2, characterized in that: A cam is provided on the circumference of the side wheel. When the side wheel rotates in the stapling direction, the cam drives one end of the lever downward and the other end downward to leave the pressing pin. When the side wheel rotates in the opposite direction of stapling, the cam drives one end of the lever upward and the other end presses the pressing pin downward. The downward movement of the pressing pin unlocks the button lock of the nail track assembly and the nail track of the nail track assembly pops out.

4. The staple handling mechanism of the electric stapler according to claim 3, characterized in that: A disc is arranged on the outside of the cam, and one end of the disc limit lever.

5. The staple handling mechanism of the electric stapler according to claim 1, characterized in that: A return mechanism is provided between the lever and the machine base, and when the lever loses external force, the return mechanism enables the lever to return to its original position.

6. The staple handling mechanism of the electric stapler according to claim 5, characterized in that: The restoring mechanism is a tension spring, one end of which is connected to the machine base, and the other end is connected to one end of the lever.

7. The staple handling mechanism of the electric stapler according to claim 1, characterized in that: The pop-up nail channel assembly includes an inner nail channel, an outer nail channel, a long pin pusher, a nail pusher, a nail pusher spring, and a button lock assembly. The inner nail channel is placed in the outer nail channel and can slide in the outer nail channel. A hook groove is provided at the tail of the inner nail channel. One end of the long pin pusher is fixed to the tail of the outer nail channel and the other end is fixed to the front of the outer nail channel. The nail pusher spring is sleeved on the long pin pusher, one end of which is limited by the tail of the outer nail channel and the other end is fixed on the nail pusher. The nail pusher is placed in the inner nail channel and can slide in the inner nail channel. The staple is placed between the head of the inner nail channel and the front end of the nail pusher, so that the stapling of the nail channel assembly is consistent with the staple processing mechanism; the button lock assembly includes a button, a button lock spring, and a fixing pin. A pressing portion is provided at one end of the button and a hook portion is provided at the other end. A hook groove corresponding to the hook portion is provided at the tail of the inner nail channel of the nail channel assembly. The hook portion hooks the hook groove in the normal state. One end of the button lock spring is limited by the inside of the button and the other end is limited by the tail end of the nail channel.

8. Electric stapler, characterized by: A staple processing mechanism comprising any one of claims 1-7.

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