A flat-stitch stapler

Abstract

The present application discloses a flat-stitch stapler, comprising an upper cover, a staple channel and a base, wherein the staple channel and the upper cover are hingedly connected to the rear portion of the base, a pressing device is provided in the upper cover, and a staple outlet is provided at the front end of the staple channel. When the upper cover is pressed down, the pressing device is suitable for pushing the staple out of the staple outlet, and a flat-stitch device and an interlocking device are provided on the base, the flat-stitch device is suitable for cooperating with the pressing device to bend the two ends of the staple pushed out of the staple outlet, the flat-stitch device is suitable for making the two ends of the bent staple straight, the interlocking device has a locked state and an unlocked state, and the interlocking device is suitable for preventing the flat-stitch device from contacting the staple in the locked state, and a pusher is rotatably connected to the upper cover, the pusher includes push arm parts located on both sides of the staple channel, and the push arm parts are suitable for cooperating with the rotation of the upper cover and the pusher to push the interlocking device into the unlocked state. The flat-stitch stapler is simple and convenient to operate, and the upper cover and the base can cooperate and link to automatically trigger the flat-stitch device to make the two ends of the stapled staples straight.

Description

Technical Field

[0001] The present application relates to the technical field of binding tools, and in particular to a flat-stitch stapler. Background Art

[0002] Staplers are stationery items that are often used in work, life, and study. They can bind multiple pages of stacked paper. There is at least one stapler in every office. It provides us with an ideal means to bind many pages of paper together for preservation.

[0003] However, existing staplers have the following defects: after the binding is completed, the two ends of the stapler of a common stapler are bent to form a convex structure. When a large number of bound papers are stacked together, the convex binding position of the stapler will cause the papers to be uneven and easily skewed, and the stacking will be unstable, and it will also easily cause scratches between the papers. Summary of the Invention

[0004] One object of the present application is to provide a flat-stitch stapler that has a stable structure, is simple and convenient to operate, and can staple staples with straight ends.

[0005] To achieve the above objectives, the technical solution adopted in the present application is: a flat-stitch stapler, comprising an upper cover, a staple channel and a base, the staple channel and the upper cover being hinged to the rear portion of the base, a pressing device being provided in the upper cover, the staple channel being suitable for accommodating staples, a staple outlet being provided at the front end of the staple channel, and when the upper cover is pressed down, the pressing device being suitable for pushing the staple out of the staple outlet, a flat-stitch device and an interlocking device being provided on the base, the flat-stitch device being suitable for cooperating with the pressing device to bend the two ends of the staple pushed out of the staple outlet, the flat-stitch device being suitable for straightening the two ends of the bent staple after being bent, the interlocking device having a locked state and an unlocked state, the interlocking device being suitable for preventing the flat-stitch device from contacting the staple in the locked state, a pusher being rotatably connected to the upper cover, the pusher comprising push arm portions located on both sides of the staple channel, the push arm portions being suitable for cooperating with the rotation of the upper cover and the pusher to push the interlocking device into the unlocked state.

[0006] As an improvement, the interlocking device is provided with guiding parts on both sides of the nail channel, and the push arm part is suitable for reaching the interlocking device under the guidance of the guiding parts. The pusher also includes a limiting part, and an active cavity is provided between the pressing device and the upper cover. The limiting part is suitable for moving in the active cavity, and the limiting part is suitable for freely hanging to the bottom of the active cavity so that the push arm part is in soft contact with the guide part.

[0007] As an improvement, the interlocking device includes a sliding locking member and a resetter, the front part of the sliding locking member is suitable for cooperating to lock the flat nail device, the resetter is suitable for restoring the sliding locking member to a locked state, the rear part of the sliding locking member is provided with a pushing part cooperating with the guide part, and the push arm part is suitable for contacting the pushing part when the downward pressure device contacts the stapler.

[0008] As an improvement, the flat nail device includes a movable seat, a flat nailer and a lifting member. The rear part of the movable seat is rotatably connected to the base. The flat nailer is symmetrically rotatably arranged at the front part of the movable seat. The lifting member is arranged below the movable seat. The lifting member is suitable for pressing against the flat nailer so that it cooperates with the pressing device for compression. The sliding locking member is suitable for preventing the lifting member from pressing against the flat nailer in the locked state.

[0009] As an improvement, the sliding locking member is slidably arranged under the movable seat, a locking piece is arranged under the movable seat, a cavity is opened on the movable seat, the locking piece is suitable for entering the cavity when the movable seat and the lifting member are close to each other, and the sliding locking member is suitable for preventing the locking piece from entering the cavity in a locked state, and the height of the locking piece is the same as the height required for the lifting member to lift the stapler to straighten the two ends of the staple; at least one end of the guide portion is arc-shaped, and at least one arc-shaped end of the guide portion is located on the movable path of the top end of the push arm portion, and the edge of the guide portion is provided with an arc-shaped transition structure.

[0010] Specifically, the pressing device includes a pressing piece and a pressing rod, the pressing piece is arranged at the front part of the upper cover, the pressing piece includes an elastic part and a nail-out part, the elastic part is suitable for making the upper cover and the pressing rod move away from each other, the nail-out part passes through the pressing rod and extends into the nail channel, and the nail-out part is suitable for pushing the stapler out of the nail-out port when the upper cover and the pressing rod are close to each other, connecting parts are provided on both sides of the rear part of the pressing rod, the connecting parts are suitable for being hinged to the base, and a reinforcing part connected to the pressing rod is provided between the connecting parts, and the reinforcing part is suitable for being snapped and engaged between the connecting parts on both sides; the reinforcing part and the pressing rod are formed as one piece, and the connecting part is suitable for being bent between the connecting parts on both sides.

[0011] As an improvement, a first clamping groove is provided on the connecting part, and first clamping parts are provided on both sides of the reinforcing part, and the first clamping part is suitable for fitting and clamping into the first clamping groove; the first clamping groove extends to the outside of the connecting part to form a second clamping groove, and the connecting part is provided with a reinforcing rib on the inner side corresponding to the second clamping groove, and the first clamping part is provided with a second clamping part that fits and clamps into the second clamping groove.

[0012] As an improvement, a plurality of mounting positions are provided on the pressure rod along the length direction, a slider is provided in the nail channel, and a connector is provided between the pressure rod and the slider. The connector is suitable for driving the slider to move toward the rear of the nail channel when the pressure rod rotates away from the nail channel, and the connector is suitable for connecting with any of the mounting positions.

[0013] As an improvement, the connector includes a pull rod, the mounting position includes a first connecting hole, the first connecting hole is arranged on both sides of the pressure rod, and the ends of the pull rod are cooperatively connected with the first connecting hole; the connector includes a pull rod, the mounting position includes a second connecting hole, the second connecting hole is arranged on both sides of the pressure rod, the end of the pull rod is provided with a rotating shaft, and the two ends of the rotating shaft are cooperatively connected with the second connecting hole; the connector includes a tension spring, the mounting position includes a connecting hook, and the end of the tension spring is cooperatively connected with the connecting hook.

[0014] As an improvement, a positioning protrusion is provided on the connecting part, and the connector includes a pull strip, which is suitable for approaching the connecting part when the pressure rod rotates away from the nail channel, and the pull strip is suitable for pressing the connecting part to deform it outward so as to pass through the positioning protrusion, and the positioning protrusion is suitable for preventing the pull strip from moving away from the connecting part.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. The flat-stitch stapler is equipped with a pusher to link the upper cover and the base. The downward pressure device can trigger the flat stapling mechanism while pushing the staple out of the staple outlet, so that the downward pressure device and the flat stapling mechanism automatically cooperate to achieve the straight bending of the staple. The pusher can disengage and automatically dock with the interlocking device without manual operation. The operation is simple and convenient. The docking of the pusher and the interlocking device is stable and smooth, and it is not prone to jamming failures.

[0017] 2. The flat-stitch stapler is equipped with a reinforcement structure on the pressure rod to strengthen the structure of the pressure rod. The reinforcement structure is integrally processed and formed on the basis of the original structure of the pressure rod, which reduces the assembly process and makes the assembly process simpler and more convenient. No additional parts need to be installed for auxiliary fixation during assembly, so that the pressure rod can withstand greater pressure when matched with the upper cover, and is not prone to deformation and loosening, thereby improving durability and service life.

[0018] 3. The pressure rod of the flat-stitch stapler has multiple installation positions. Different installation positions can realize the coordinated linkage between pressure rods of different structural forms and staple channels, thereby increasing applicability.

[0019] 4. The flat-stitch stapler is equipped with a positioning protection structure on the pressure rod. When the pressure rod rotates with the upper cover to open to the maximum, the positioning protrusion can cooperate with the pull strip to engage and limit the position, preventing the pressure rod and the upper cover from rotating and closing in the direction of the staple channel, playing a temporary positioning role, facilitating the operation of the staple channel and improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of a preferred embodiment according to the present application;

[0021] Figure 2 is an exploded structural view according to a preferred embodiment of the present application;

[0022] Figure 3 is a front view according to a preferred embodiment of the present application;

[0023] Figure 4 According to a preferred embodiment of the present application Figure 3 Sectional view along AA direction;

[0024] Figure 5 is a schematic diagram of the structural coordination of a pusher and an interlocking device according to a preferred embodiment of the present application;

[0025] Figure 6 This is a schematic diagram of the structure of a flat nail device according to a preferred embodiment of the present application;

[0026] Figure 7 is a perspective view of the outer side of a pressure rod according to a preferred embodiment of the present application;

[0027] Figure 8 According to a preferred embodiment of the present application Figure 7 Enlarged view at point a;

[0028] Figure 9 is a perspective view of the inner side of a pressure rod according to a preferred embodiment of the present application;

[0029] Figure 10 It is a structural diagram of a connector and a positioning protrusion when they are engaged with each other according to a preferred embodiment of the present application.

[0030] In the figure: 1, upper cover; 2, nail channel; 21, nail outlet; 3, base; 4, pressing device; 41, pressing piece; 411, elastic portion; 412, nail outlet; 42, pressing rod; 421, connecting portion; 4211, positioning bump; 4212, first clamping groove; 4213, second clamping groove; 4214, reinforcing rib; 422, reinforcing portion; 4221, first clamping portion; 4222, second clamping portion; 423, mounting position; 4231. First connecting hole; 4232. Second connecting hole; 4233. Connecting hook; 5. Flat nail device; 51. Guide portion; 52. Movable seat; 521. Locking member; 522. Receiving cavity; 53. Flat nailer; 531. Fixing groove; 54. Lifting member; 6. Interlocking device; 61. Sliding locking member; 611. Pushing portion; 7. Pusher; 71. Push arm portion; 72. Limiting portion; 8. Movable cavity; 9. Connector. DETAILED DESCRIPTION

[0031] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0032] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this 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 cannot be understood as limiting the specific scope of protection of this application.

[0033] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0034] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0035] The present application will be further described below with reference to the accompanying drawings:

[0036] like Figures 1 to 10As shown, a preferred embodiment of the present application includes an upper cover 1, a nail channel 2 and a base 3. The nail channel 2 and the upper cover 1 are hinged to the rear of the base 3. A downward pressing device 4 is provided in the upper cover 1. The nail channel 2 is suitable for accommodating staples. A staple outlet 21 is provided at the front end of the nail channel 2. When the upper cover 1 is pressed down, the downward pressing device 4 is suitable for pushing the staples out from the staple outlet 21.

[0037] A flat stapling device 5 and an interlocking device 6 are provided on the base 3. The flat stapling device 5 is suitable for cooperating with the pressing device 4 to bend the two ends of the staple pushed out of the staple outlet 21. The flat stapling device 5 is suitable for making the two ends of the bent staple straight, so that the two ends of the bent staple can fit the paper, which facilitates the stacking of the paper and reduces the stacking space occupied.

[0038] The interlocking device 6 has a locked state and an unlocked state. The interlocking device 6 is suitable for preventing the flat nail device 5 from contacting the staples in the locked state. A pusher 7 is rotatably connected to the upper cover 1. The pusher 7 includes push arm portions 71 located on both sides of the staple channel 2. The push arm portions 71 are suitable for cooperating with the rotation of the upper cover 1 and the pusher 7 to push the interlocking device 6 into the unlocked state. When the push arm portion 71 reaches the interlocking device 6, the upper cover 1 continues to rotate, and the top of the push arm portion 71 continues to move to push the interlocking device 6. At this time, the pusher 7 will also rotate to a certain angle under the reaction force of the resistance of the interlocking device 6, further increasing the moving distance of the top of the push arm portion 71, thereby realizing stable linkage between the upper cover 1 and the interlocking device 6 within a smaller rotation angle range.

[0039] The push arm portion 71 faces the hinge between the upper cover 1 and the base 3. The angle between the push arm portion 71 and the upper cover 1 is preferably less than 90 degrees, which can facilitate the hiding of the push arm portion 71, make the appearance of the stapler more overall beautiful, and reduce the risk of the push arm portion 71 being clamped when the upper cover 1 and the base 3 are close.

[0040] The interlocking device 6 is provided with a guide portion 51 on both sides of the nail channel 2, and the push arm portion 71 is suitable for reaching the interlocking device 6 under the guidance of the guide portion 51. The guide portion 51 can make the push arm portion 71 and the interlocking device 6 cooperate more smoothly, and avoid the push arm portion 71 from moving outside the interlocking device 6 and failing to successfully interfere; at least one end of the guide portion 51 is arc-shaped, and at least one arc-shaped end of the guide portion 51 is located on the moving path of the top end of the push arm portion 71, which improves the movement smoothness of the push arm portion 71, and the edge of the guide portion 51 is provided with an arc-shaped transition structure, which further improves the movement smoothness of the push arm portion 71 and avoids the push arm portion 71 from getting stuck.

[0041] The pusher 7 also includes a limiting portion 72. An active cavity 8 is provided between the pressing device 4 and the upper cover 1. The limiting portion 72 is suitable for moving in the active cavity 8. The limiting portion 72 is suitable for freely hanging to the bottom of the active cavity 8 so that the push arm portion 71 is in soft contact with the guide portion 51, thereby improving the smoothness and stability of the movement of the push arm portion 71. The meaning of soft contact is: when the push arm portion 71 contacts the guide portion 51, if the push arm portion 71 is a fixed structure, the guide portion 51 will interfere with the movement of the push arm portion 71 to a certain extent. At this time, the limiting portion 72 can move in the active cavity 8 to guide the push arm portion 71 to move along the guide portion 51, thereby eliminating this interference phenomenon.

[0042] The interlocking device 6 includes a sliding locking member 61 and a resetter. The front part of the sliding locking member 61 is suitable for cooperating with the locking flat nail device 5. The resetter is arranged between the base 3 and the sliding locking member 61. The resetter is suitable for making the sliding locking member 61 slide and restore it to a locked state. The reset member preferably uses a spring. The rear part of the sliding locking member 61 is provided with a pushing portion 611 that cooperates with the guide portion 51. The push arm portion 71 is suitable for contacting the pushing portion 611 when the downward pressure device 4 contacts the stapler. A groove can be provided on the pushing portion 611 according to the direction of the push arm portion 71. The groove can be used to guide the rotation of the pusher 7 to prevent the push arm portion 71 from slipping off the pushing portion 611.

[0043] The flat nail device 5 includes a movable seat 52, a flat nailer 53 and a lifting member 54. The rear part of the movable seat 52 is rotatably connected to the base 3. The flat nailer 53 is symmetrically rotatably arranged at the front part of the movable seat 52. The lifting member 54 is arranged below the movable seat 52. The lifting member 54 is suitable for pressing against the flat nailer 53 so that it cooperates with the pressing device 4 for compression. The sliding locking member 61 is suitable for preventing the lifting member 54 from pressing against the flat nailer 53 in a locked state. The relative movement and fixation between the lifting member 54 and the flat nailer 53 can be easily achieved through the sliding locking member 61, thereby avoiding the flat nailer 53 from being triggered accidentally and improving the stability of use.

[0044] A fixing groove 531 is provided on the stapler 53, which is suitable for preventing the two ends of the stapler from slipping off the stapler 53, thereby increasing the bending stability of the stapler. The outer side of the stapler 53 is rotatably connected to the movable seat 52. When the lifting member 54 rises, the outer end of the fixing groove 531 will first contact the stapler and bend. As the lifting member 54 drives the stapler 53 to rotate, the two ends of the stapler will bend along with the stapler 53 and finally be squeezed into a straight state.

[0045] The sliding locking member 61 is slidably arranged under the movable seat 52, and a locking piece 521 is arranged under the movable seat 52. A cavity 522 is opened on the movable seat 52, and the locking piece 521 is suitable for entering the cavity 522 when the movable seat 52 and the lifting member 54 are close to each other. The sliding locking member 61 is suitable for preventing the locking piece 521 from entering the cavity 522 in the locked state. The height of the locking piece 521 is the same as the height required by the lifting member 54 to lift the stapler 53 to make the two ends of the staples straight. The stapler 53 moves with the movable seat 52. When the height of the movable seat 52 changes, it means that the stapler 53 is successfully triggered and operated. This design can not only prevent the stapler 53 from being exposed outside the movable seat 52 and improving the use and structural stability of the stapler 53, but also facilitate observation of the use status of the stapler, which is conducive to use.

[0046] The push arm portion 71 and the sliding locking member 61 are preferably plate-like structures, and the push portion 611 is symmetrically integrally formed on both sides of the plate-like structure. The push portion 611 is also preferably a plate-like structure, which can save space and prevent the stapler from being too large, affecting storage and use.

[0047] A spring is provided between the staple channel 2 and the flat stapling device 5, which is used to move the staple channel 2 and the flat stapling device 5 away from each other to facilitate the next stapling operation. A spring is also provided in the staple channel 2, which is used to move the slider toward the front of the staple channel 2 to facilitate the staple to be used to be pushed to the staple outlet 21 for easy removal.

[0048] The pressing device 4 includes a pressing piece 41 and a pressing rod 42. The pressing piece 41 is arranged at the front part of the upper cover 1. The pressing piece 41 includes an elastic part 411 and a nail-out part 412. The elastic part 411 is suitable for making the upper cover 1 and the pressing rod 42 move away from each other. The nail-out part 412 passes through the pressing rod 42 and extends into the nail channel 2. The nail-out part 412 is suitable for pushing the staple out from the nail outlet 21 when the upper cover 1 and the pressing rod 42 are close to each other. When the pressing piece 41 is pressed, it can play a nail-out role. When the pressure at the pressing piece 41 contacts, it can play a reset role to make the upper cover 1 and the pressing rod 42 work. One component can have multiple functions, saving space.

[0049] like Figure 6 As shown, arc-shaped transitions are provided on both sides of the lifting member 54 and below the inner side of the flat nailer 53, so that the flat nailer 53 can rotate smoothly when lifted by the lifting member 54, thereby improving the stability of the flat needle operation.

[0050] like Figures 7 to 10As shown, connecting parts 421 are provided on both sides of the rear part of the pressure rod 42, and the connecting parts 421 are suitable for being hinged to the base 3. A reinforcing part 422 connected to the pressure rod 42 is provided between the connecting parts 421, and the reinforcing part 422 is suitable for being snap-fitted and engaged between the connecting parts 421 on both sides. The stability of the connection structure between the reinforcing part 422 and the connecting part 421 can be ensured by the snap-fitting and engaging structure. The reinforcing structure can be applied to components of smaller volume without the use of additional connecting parts, and is relatively convenient to produce and assemble.

[0051] The extension line of the length direction of the connecting part 421 and the extension line of the length direction of the pressure rod 42 intersect with each other, which can improve the anti-deformation ability. The reinforcement part 422 and the pressure rod 42 are formed as one piece, and the connecting part 421 is suitable for bending between the connecting parts 421 on both sides. The one-piece molding structure can further improve the stability between the reinforcement part 422 and the connecting part 421, and the reinforcement part 422 and the connecting part 421 after connection are less likely to deform.

[0052] An assembly gap is provided between the reinforcing portion 422 and the connecting portion 421 near one end of the pressure rod 42 to prevent the reinforcing portion 422 from structurally interfering with the connecting portion 421 due to assembly error during the bending process, thereby increasing assembly difficulty or even causing damage.

[0053] The connection form between the reinforcing portion 422 and the connecting portion 421 is: a first snap-in groove 4212 is provided on the connecting portion 421, and first snap-in portions 4221 are provided on both sides of the reinforcing portion 422. The first snap-in portions 4221 are suitable for fitting into the first snap-in groove 4212, and the cooperation between the first snap-in portion 4221 and the first snap-in groove 4212 prevents deformation and movement between the reinforcing portion 422 and the connecting portion 421.

[0054] In order to further enhance the connection strength between the reinforcing portion 422 and the connecting portion 421, the first snap-fitting groove 4212 extends to the outside of the connecting portion 421 to form a second snap-fitting groove 4213, and the connecting portion 421 is provided with a reinforcing rib 4214 on the inner side corresponding to the second snap-fitting groove 4213, and the first snap-fitting portion 4221 is provided with a second snap-fitting portion 4222 that is engaged and snapped into the second snap-fitting groove 4213. This structure enables the reinforcing portion 422 to prevent the connecting portion 421 from deforming to both sides, and has better reset ability. When using the positioning protrusion 4211 of the positioning protection structure described below, the structural stability of the pressure rod 42 can be guaranteed.

[0055] A plurality of mounting positions 423 are provided on the pressure rod 42 along the length direction, a slidable slider is provided in the nail channel 2, and a connector 9 is provided between the pressure rod 42 and the slider. The connector 9 is suitable for driving the slider to move toward the rear of the nail channel 2 when the pressure rod 42 rotates away from the nail channel 2. The connector 9 is suitable for connecting with any mounting position 423. Different mounting positions 423 can be connected to connectors 9 of different structural forms, thereby improving the applicability of assembly and use.

[0056] One structural form of the connector 9 includes a pull rod, and the mounting position 423 includes a first connecting hole 4231. The first connecting hole 4231 is arranged on both sides of the pressure rod 42, and the two sides of the end of the pull rod are matched and connected with the first connecting hole 4231. The advantages of the pull rod are high structural strength, good durability, not easy to detach, and stronger follow-up performance of the slider.

[0057] Another structural form of the connector 9 includes a pull rod, and the mounting position 423 includes a second connecting hole 4232. The second connecting hole 4232 is arranged on both sides of the pressure rod 42. A rotating shaft is provided at the end of the pull rod, and the two ends of the rotating shaft are connected with the second connecting hole 4232. The advantage of the pull rod is that it is more convenient to install.

[0058] Another structural form of the connector 9 includes a tension spring, and the mounting position 423 includes a connecting hook 4233. The end of the tension spring is cooperatively connected with the connecting hook 4233. The advantage of the tension spring is that the pulling of the slider is more flexible, and the movement of the slider and the rotation of the pressure rod 42 can be separated from each other, and the position of the slider can be adjusted manually by pulling.

[0059] The connection part 421 is provided with a positioning protrusion 4211, and the connector 9 includes a pull strip, which is suitable for approaching the connection part 421 when the pressure rod 42 rotates away from the nail channel 2. The two sides of the pull strip are suitable for pressing the connection part 421 to deform it outward so as to pass through the positioning protrusion 4211. This deformation process should not be too difficult or too simple. It is necessary to select a suitable material to make the connection part 421. A material with certain flexibility and toughness can be selected to reduce the difficulty of deformation and improve the reset ability. The connection part 421 also needs to be set with a suitable thickness to avoid the pull strip from having difficulty passing through the positioning protrusion 4211, or the positioning protrusion 4211 cannot play its due positioning role. The positioning protrusion 4211 is suitable for preventing the pull strip from moving away from the connection part 421. The positioning protrusion 4211 can clamp and limit the pull strip to prevent the pressure rod 42 and the upper cover 1 from rotating and closing in the direction of the nail channel 2, thereby playing a temporary positioning role, facilitating the operation of the nail channel 2, and improving safety of use.

[0060] A rotating shaft is provided on the base 3, the pressure rod 42 and the nail channel 2 are hinged to the rotating shaft, and the positioning protrusion 4211 is suitable for cooperating with the rotating shaft to clamp and fix the connector 9, further improving the positioning stability of the connector 9 and preventing the connector 9 from moving.

[0061] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A flat-stitch stapler, characterized in that: The cam is hinged on the rear portion of the base, and a pressing device is provided in the upper cover, wherein the nail channel is suitable for accommodating staples, and a staple outlet is provided at the front end of the nail channel. When the upper cover is pressed down, the pressing device is suitable for pushing the staples out of the staple outlet. A flat nail device and an interlocking device are provided on the base, wherein the flat nail device is suitable for cooperating with the pressing device to bend the two ends of the staple pushed out of the staple outlet, and the flat nail device is suitable for straightening the two ends of the bent staples. The interlocking device has a locked state and an unlocked state, and the interlocking device is suitable for preventing the flat nail device from contacting the staples in the locked state. A pusher is rotatably connected to the upper cover, and the pusher includes push arm portions located on both sides of the nail channel, and the push arm portions are suitable for cooperating with the rotation of the upper cover and the pusher to push the interlocking device into the unlocked state. The interlocking device is provided with guide parts on both sides of the nail channel, the guide parts are suitable for limiting the movement of the push arm part, and the push arm part is suitable for reaching the interlocking device under the guidance of the guide parts. The pusher also includes a limiting part, and an active cavity is provided between the pressing device and the upper cover. The limiting part is suitable for moving in the active cavity, and the limiting part is suitable for freely hanging to the bottom of the active cavity so that the push arm part is in soft contact with the guide part; The pressing device includes a pressure rod, and connecting parts are provided on both sides of the rear part of the pressure rod, and the connecting parts are suitable for being hinged to the base, and a reinforcement part connected to the pressure rod is provided between the connecting parts, and the reinforcement part is suitable for being snapped and embedded between the connecting parts on both sides. The reinforcement part and the pressure rod are formed as one piece, and the connecting part is suitable for being bent between the connecting parts on both sides. A first snap-in groove is provided on the connecting part, and first snap-in parts are provided on both sides of the reinforcement part. The first snap-in part is suitable for being fitted and snapped into the first snap-in groove; the first snap-in groove extends to the outside of the connecting part to form a second snap-in groove, and the connecting part is provided with a reinforcement rib on the inner side corresponding to the second snap-in groove, and a second snap-in part is provided on the first snap-in part to be fitted and snapped into the second snap-in groove.

2. A flat-stitch stapler according to claim 1, characterized in that: The interlocking device includes a sliding locking member and a resetter, the front portion of the sliding locking member is suitable for cooperating to lock the flat nail device, the resetter is suitable for restoring the sliding locking member to a locked state, the rear portion of the sliding locking member is provided with a pushing portion cooperating with the guide portion, and the push arm portion is suitable for contacting the pushing portion when the pressing device contacts the staple.

3. A flat-stitch stapler according to claim 2, characterized in that: The flat nail device includes a movable seat, a flat nailer and a lifting member. The rear part of the movable seat is rotatably connected to the base. The flat nailer is symmetrically rotatably arranged at the front part of the movable seat. The lifting member is arranged below the movable seat. The lifting member is suitable for pressing against the flat nailer so that it cooperates with the pressing device for compression. The sliding locking member is suitable for preventing the lifting member from pressing against the flat nailer in a locked state.

4. A flat-stitch stapler according to claim 3, characterized in that: The sliding locking member is slidably arranged under the movable seat, and a locking piece is provided under the movable seat. A cavity is opened on the movable seat, and the locking piece is adapted to enter the cavity when the movable seat and the lifting member are close to each other. The sliding locking member is adapted to prevent the locking piece from entering the cavity in a locked state, and the height of the locking piece is the same as the height required for the lifting member to lift the stapler to straighten the two ends of the staple; at least one end of the guide portion is arc-shaped, and at least one arc-shaped end of the guide portion is located on the movable path of the top end of the push arm portion, and the edge of the guide portion is provided with an arc-shaped transition structure.

5. The flat-stitch stapler according to claim 1, wherein: The pressing device includes a pressing plate, which is arranged at the front part of the upper cover. The pressing plate includes an elastic part and a nail-out part. The elastic part is suitable for making the upper cover and the pressure rod move away from each other. The nail-out part passes through the pressure rod and extends into the nail channel. The nail-out part is suitable for pushing the staple out of the nail-out port when the upper cover and the pressure rod are close to each other.

6. A flat-stitch stapler according to claim 5, characterized in that: A plurality of mounting positions are provided on the pressure rod along the length direction, a slider is provided in the nail channel, a connector is provided between the pressure rod and the slider, the connector is suitable for driving the slider to move toward the rear of the nail channel when the pressure rod rotates away from the nail channel, and the connector is suitable for connecting with any of the mounting positions.

7. A flat-stitch stapler according to claim 6, characterized in that: The connector includes a pull rod, and the mounting position includes a first connecting hole, which is arranged on both sides of the pressure rod, and the ends of the pull rod are matched and connected with the first connecting hole; the connector includes a pull rod, and the mounting position includes a second connecting hole, which is arranged on both sides of the pressure rod, and the ends of the pull rod are provided with a rotating shaft, and the two ends of the rotating shaft are matched and connected with the second connecting hole; the connector includes a tension spring, and the mounting position includes a connecting hook, and the ends of the tension spring are matched and connected with the connecting hook.

8. The flat-stitch stapler according to claim 7, wherein: A positioning protrusion is provided on the connecting portion, and the connector includes a pull strip, which is suitable for approaching the connecting portion when the pressure rod rotates away from the nail channel. The pull strip is suitable for pressing the connecting portion to deform it outward so as to pass through the positioning protrusion, and the positioning protrusion is suitable for preventing the pull strip from moving away from the connecting portion.

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