An electric stapler

Abstract

The utility model relates to an electric stapler, which comprises a base, one side of the base is hinged to an upper stapling cover, the other side of the base is fixed to a flat stapling table, the upper stapling cover is provided with a stapling assembly, the base is further provided with a motor and a transmission mechanism connected to the motor, characterized in that the flat stapling table is further provided with a flat stapling assembly, the upper stapling cover and the flat stapling assembly are connected to the transmission mechanism, and the transmission mechanism is used for sequentially controlling the upper stapling cover to rise, to descend and to be stationary, and the stapling assembly is triggered to staple when the upper stapling cover descends, and the flat stapling assembly is triggered to flat staple by the transmission mechanism when the upper stapling cover is stationary. The stapling structure and the flat stapling structure of the electric stapler are separated, and the stapling action and the flat stapling action are executed separately.

Description

Technical Field

[0001] This invention relates to the field of stapler technology, and more specifically to an electric stapler. Background Technology

[0002] Existing electric staplers typically integrate the staple-setting and flat-stitching mechanisms onto the top stapler cover, resulting in a complex cover structure. Furthermore, the staple-setting and flat-stitching actions are performed simultaneously, which is highly inefficient and leads to a decline in binding quality after a certain number of uses. Therefore, there is an urgent need to design an electric stapler with separate staple-setting and flat-stitching mechanisms, and where the staple-setting and flat-stitching actions are performed independently. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an electric stapler in which the stapleping structure and the flat stapleping structure are separated, and the stapleping action and the flat stapleping action are performed separately.

[0004] The technical solution of the present invention is: an electric stapler, comprising a base, an upper staple cover hinged to one side of the base, and a flat stapler fixed to the other side, a stapler assembly provided on the upper staple cover, a motor and a transmission mechanism connected to the motor on the base, characterized in that: a flat stapler assembly is also provided on the flat stapler assembly, and both the upper staple cover and the flat stapler assembly are connected to the transmission mechanism, for the transmission mechanism to sequentially control the upper staple cover to rise, fall, and remain stationary, and to trigger the stapler assembly to staple when the upper staple cover falls, and to trigger the flat stapler assembly to staple when the upper staple cover is stationary.

[0005] With the above structure, the present invention has the following advantages:

[0006] This invention, an electric stapler, not only structurally separates the stapleping and flat stapleping components (the stapleping component is located on the upper staple cover, while the flat stapleping component is located on the base), but also executes the stapleping and flat stapleping actions separately. The upper staple cover is controlled by a transmission mechanism to rise, fall, and remain stationary. Paper is inserted when the upper staple cover rises, staples are performed when it falls, and flat staples are performed when the upper staple cover is stationary. Separating the stapleping and flat stapleping structures simplifies the upper staple cover structure and facilitates the separate execution of the stapleping and flat stapleping actions. This separation results in better stapleping and flat stapleping effects. Furthermore, the flat stapleping effect is even better when the upper staple cover is stationary.

[0007] Preferably, the transmission mechanism includes a gear reduction mechanism, an upper nail cover swing mechanism, and a flat nail triggering mechanism. The primary gear of the gear reduction mechanism is connected to a motor, and the final gear is connected to the input end of the upper nail cover swing mechanism and the input end of the flat nail triggering mechanism. The output end of the upper nail cover swing mechanism is connected to the upper nail cover, and the output end of the flat nail triggering mechanism is connected to the flat nail assembly. The gear reduction mechanism ensures smooth and reliable nailing and flat nailing actions. The inclusion of the upper nail cover swing mechanism and the flat nail triggering mechanism provides a reasonable structural design, facilitating the separate driving of the nailing and flat nailing assemblies by the final gear of the gear reduction mechanism, thus separating the nailing and flat nailing actions and resulting in better binding quality.

[0008] Preferably, the gear reduction mechanism is a three-stage gear reduction mechanism. This configuration improves product performance without excessively increasing structural complexity.

[0009] Preferably, the upper nail cover swing mechanism includes two irregularly shaped pieces symmetrically arranged on both sides of the base. The gear reduction mechanism has two synchronously rotating final stage gears, which are also symmetrically arranged on the left and right sides of the base. One end of each irregularly shaped piece is connected to the corresponding final stage gear, and the other end is connected to the upper nail cover. This allows the irregularly shaped piece to move when the final stage gear rotates, thus controlling the upper nail cover's rising, falling, and stationary positions. The irregularly shaped piece structure is simple and inexpensive; moreover, the arrangement of irregularly shaped pieces and final stage gears on both sides of the base ensures smoother and more reliable movement of the upper nail cover.

[0010] Preferably, the upper nail cover swing mechanism further includes two gear shafts, an upper cover shaft, and a central shaft. The two gear shafts are respectively disposed on the outer surfaces of the two final gears of the gear reduction mechanism. The upper cover shaft passes through the upper nail cover from left to right, and the central shaft passes through the base from left to right. The irregularly shaped piece is provided with a pivot hole, a strip hole, and an arc hole. The two ends of the central shaft are pivotally connected to the irregularly shaped piece through the pivot hole. The two ends of the upper cover shaft pass through the strip holes of the two irregularly shaped pieces, and the two gear shafts pass through the arc holes of the two irregularly shaped pieces. When the center of the pitch circle of the final gear deviates from the arc center of the arc hole of the irregularly shaped piece, the irregularly shaped piece rotates around the central shaft. At the same time, the gear shaft slides along the arc hole, and the upper cover shaft slides up and down along the strip hole. The upper nail cover first rises and then falls. When the center of the pitch circle of the final gear coincides with the arc center of the arc hole of the irregularly shaped piece, the gear shaft slides along the arc hole, and the irregularly shaped piece remains stationary, and the upper nail cover remains stationary. This irregularly shaped piece can achieve complex movements simply by matching the design of relevant shafts and holes. It not only has a simple and ingenious structure with few required parts, but also moves smoothly and reliably.

[0011] Preferably, the central shaft is vertically movably mounted on the base, and its two ends are connected to the base via two elastic elements to provide a downward pulling force. This arrangement allows the central shaft to move slightly upward when binding thicker paper to accommodate the binding requirements of even thicker paper.

[0012] Preferably, the flat nail platform is provided with a bending through groove, and the flat nail assembly includes two flat nail blocks that are symmetrically arranged at left and right intervals within the bending through groove and can swing up and down reciprocally. The flat nail blocks are connected to a transmission mechanism. This flat nail assembly has a simple and compact structure and provides good flat nailing effect.

[0013] Preferably, the transmission mechanism includes a gear reduction mechanism, an upper nail cover swing mechanism, and a flat nail triggering mechanism. The primary gear of the gear reduction mechanism is connected to a motor, and the final gear is connected to the input end of the upper nail cover swing mechanism and the input end of the flat nail triggering mechanism. The output end of the upper nail cover swing mechanism is connected to the upper nail cover, and the output end of the flat nail triggering mechanism is connected to two flat nail blocks. The gear reduction mechanism ensures smooth and reliable nailing and flat nailing actions. The upper nail cover swing mechanism and flat nail triggering mechanism have a reasonable structural design, facilitating the separate driving of the upper nail cover and flat nail components by the final gear of the gear reduction mechanism, thus separating the nailing and flat nailing actions and resulting in better binding quality.

[0014] Preferably, the flat nail triggering mechanism includes a cam, a camshaft, and a lever. The two ends of the camshaft pass through the centers of the pitch circles of the two final-stage gears and rotate synchronously with them. The cam is mounted on the camshaft and rotates synchronously with it. The lever is positioned below the cam, with one end abutting against the cam and the other end abutting against the bottom of the two flat nail blocks. This allows the end of the lever near the flat nail blocks to move up and down with the rotation of the cam. This flat nail triggering mechanism only requires a cam and a lever; the rotation of the cam drives the lever to move up and down, and the movement of the lever drives the up and down swing of the flat nail blocks. The entire flat nail triggering mechanism is very simple and requires few components.

[0015] Preferably, the camshaft is a hexagonal pin. This configuration is simple in structure and easily achieves synchronous rotation of the final stage gear, cam, and camshaft.

[0016] Preferably, the lever includes a plate and a fixed shaft passing through the middle of the plate. The fixed shaft is a cylindrical pin with both ends extending through the base. This lever has a simple structure and reliable rotation.

[0017] Preferably, the central shaft is located above the fixed shaft, and two elastic elements at both ends of the central shaft are connected to the two ends of the fixed shaft respectively, providing a downward pulling force to the central shaft. This arrangement allows the central shaft to move slightly upward to accommodate the binding requirements of thicker paper, and the use of elastic elements at both ends of the fixed shaft not only facilitates installation but also simplifies the structure.

[0018] Preferably, the end of the lever near the cam has a first abutting surface that engages with the cam. This arrangement allows the lever to reliably abut against the cam.

[0019] Preferably, the end of the lever near the flat nail block has a second abutment that mates with the bottom of the flat nail block. This arrangement allows the lever to reliably abut against the flat nail block.

[0020] Preferably, the upper surface of the flat nail block includes a first plane and a second plane arranged on the left and right sides. The second plane is closer to the free end of the flat nail block than the first plane. The first plane is used to abut against the bottom of the nail leg when the flat nail block swings to the lowest position and the nail leg continues to move downward, so that the lower part of the nail leg bends upward to complete the first bend. The second plane is used to abut against the bent part of the nail leg when the nail leg completes the first bend and the flat nail block swings upward, so that the bent part of the nail leg continues to bend upward until the flat nail block swings to the highest position to complete the second bend. The sum of the angle of the first bend and the angle of the second bend is 90° plus the rebound deformation angle of the nail leg. The upper surface of the flat nail block is composed of two planes, which allows the nail leg to be bent twice at different stages. The sum of the two bending angles is equal to 90° plus the rebound deformation angle of the nail leg. After the second bending is completed and the effect of the second plane is removed, the rebound deformation of the nail leg will make the angle of the rebounded nail leg exactly 90°, which is a flat nail. This can compensate for the rebound deformation of the nail leg, avoid poor corner wrapping, and the flat nail has a better effect. It is not easy to scratch your hand when you touch it, and it is also not easy to tear the paper.

[0021] Preferably, the angle between the first plane and the second plane is an obtuse angle. This setting allows for smoother bending and better bending results. Attached Figure Description

[0022] Figure 1 This is a first-view structural schematic diagram of the electric stapler of the present invention;

[0023] Figure 2 This is a second-view structural schematic diagram of the electric stapler of the present invention;

[0024] Figure 3 This is a third-view structural diagram of the electric stapler of the present invention;

[0025] Figure 4This is a schematic diagram of the internal structure of the electric stapler of the present invention;

[0026] Figure 5 This is a side view of the electric stapler of the present invention during staple making;

[0027] Figure 6 This is a side view of the electric stapler of the present invention at the start of flat stapleping;

[0028] Figure 7 This is a side view of the electric stapler of the present invention at the end of the flat stapleing process;

[0029] Figure 8 This is a side view of the flat nail triggering mechanism of the present invention driving the flat nail block to rise;

[0030] Figure 9 This is a side view of the flat nail triggering mechanism of the present invention driving the flat nail block to descend.

[0031] Figure 10 This is a schematic diagram showing the U-shaped nail after the flat nail block has undergone its first bend.

[0032] Figure 11 This is a schematic diagram showing the U-shaped nail after the flat nail block has been bent a second time.

[0033] Figure 12 This is a schematic diagram of the U-shaped nail after it springs back.

[0034] In the diagram: 1-base, 2-upper nail cover, 3-flat nail platform, 4-motor, 5-upper nail cover swing mechanism, 6-flat nail triggering mechanism, 7-gear reduction mechanism, 8-primary gear, 9-irregular piece, 10-gear shaft, 11-upper cover shaft, 12-central shaft, 13-final gear, 14-pivot hole, 15-strip hole, 16-arc hole, 17-bending through groove, 18-flat nail block, 19-cam, 20-camshaft, 21-lever, 22-plate, 23-fixed shaft, 24-first abutment surface, 25-second abutment surface, 26-elastic element, 27-first plane, 28-second plane, 29-nail leg, 30-U-shaped nail, 31-paper, 32-nailing assembly, 33-flat nail assembly. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] Example:

[0037] like Figure 1-12As shown, an electric stapler includes a base 1, with an upper staple cover 2 hinged to one side and a flat stapler 3 fixed to the other side. The upper staple cover 2 has a staple-driving assembly 32. The base also has a motor 4 and a transmission mechanism connected to the motor 4. The flat stapler 3 has a flat stapler assembly 33. Both the upper staple cover 2 and the flat stapler assembly 33 are connected to the transmission mechanism, which sequentially controls the upper staple cover 2 to rise, fall, and remain stationary. When the upper staple cover 2 falls, the staple-driving assembly 32 is triggered to staple; when the upper staple cover 2 is stationary, the transmission mechanism triggers the flat stapler assembly 33 to staple. The mounting structure of the stapler assembly 32 and the upper staple cover 2, as well as the structure that triggers the stapler assembly 32 to work when the upper staple cover 2 falls, are existing technologies and will not be described further here.

[0038] The flat nail table 3 is provided with a bending through groove 17, and the flat nail assembly 33 includes two flat nail blocks 18 that are symmetrically arranged at left and right intervals in the bending through groove 17 and can swing up and down. The flat nail blocks 18 are connected to the transmission mechanism.

[0039] The transmission mechanism includes a gear reduction mechanism 7, an upper nail cover swing mechanism 5, and a flat nail triggering mechanism 6. The primary gear 8 of the gear reduction mechanism 7 is connected to the motor 4, and the final gear 13 is connected to the input end of the upper nail cover swing mechanism 5 and the input end of the flat nail triggering mechanism 6. The output end of the upper nail cover swing mechanism 5 is connected to the upper nail cover 2, and the output end of the flat nail triggering mechanism 6 is connected to two flat nail blocks 18. The gear reduction mechanism 7 is a three-stage gear reduction mechanism 7.

[0040] The upper nail cover swing mechanism 5 includes two irregularly shaped pieces 9 symmetrically arranged on both sides of the base 1. The gear reduction mechanism 7 is provided with two synchronously rotating final stage gears 13, which are also symmetrically arranged on the left and right sides of the base 1. One end of each irregularly shaped piece 9 is connected to the corresponding final stage gear 13, and the other end is connected to the upper nail cover 2. It is used to drive the irregularly shaped piece 9 to move when the final stage gear 13 rotates, thereby controlling the upper nail cover 2 to rise, fall, and remain stationary. The upper nail cover swing mechanism 5 also includes two gear shafts 10, one upper cover shaft 11, and one central shaft 12. The two gear shafts 10 are respectively arranged on the outer surfaces of the two final stage gears 13 of the gear reduction mechanism 7. The upper cover shaft 11 passes through the upper nail cover 2 on both sides, and the central shaft 12 passes through the base 1 on both sides. The irregularly shaped pieces 9... The upper cover is provided with a pivot hole 14, a strip hole 15, and an arc hole 16. The two ends of the central shaft 12 are pivotally connected to the irregular piece 9 through the pivot hole 14. The two ends of the upper cover shaft 11 are inserted into the strip holes 15 of the two irregular pieces 9. The two gear shafts 10 are inserted into the arc holes 16 of the two irregular pieces 9. When the center of the pitch circle of the last stage gear 13 deviates from the arc center of the arc hole 16 of the irregular piece 9, the irregular piece 9 rotates around the central shaft 12. At the same time, the gear shaft 10 slides along the arc hole 16 and the upper cover shaft 11 slides up and down along the strip hole 15. The upper nail cover 2 rises first and then falls. When the center of the pitch circle of the last stage gear 13 coincides with the arc center of the arc hole 16 of the irregular piece 9, the gear shaft 10 slides along the arc hole 16 and the irregular piece 9 remains stationary. The upper nail cover 2 remains stationary.

[0041] The flat nail triggering mechanism 6 includes a cam 19, a camshaft 20, and a lever 21. The two ends of the camshaft 20 are positioned at the centers of the pitch circles of the two final stage gears 13 and rotate synchronously with them. The cam 19 is mounted on the camshaft 20 and rotates synchronously with it. The lever 21 is positioned below the cam 19, with one end abutting against the cam 19 and the other end abutting against the bottom of the two flat nail blocks 18. This allows the end of the lever 21 near the flat nail blocks 18 to move up and down as the cam 19 rotates. Figure 8 , Figure 9 The diagram illustrates the positional changes of the flat nail block 18 as the cam 19 rotates to different positions; the lever 21 has a first abutment surface 24 that cooperates with the cam 19 at one end; and a second abutment surface 25 that cooperates with the bottom of the flat nail block 18 at one end.

[0042] The camshaft 20 is a hexagonal pin; the lever 21 includes a plate 22 and a fixed shaft 23 passing through the middle of the plate 22. The fixed shaft 23 is a cylindrical pin with both ends passing through the base 1; the central shaft 12 is movably mounted on the base 1, and the central shaft 12 is located above the fixed shaft 23. The two ends of the central shaft 12 are respectively connected to the two ends of the fixed shaft 23 through two elastic elements 26, which are used to provide a downward pulling force on the central shaft 12; the elastic elements can be tension springs.

[0043] The upper surface of the flat nail block 18 includes a first plane 27 and a second plane 28 arranged on the left and right sides. The second plane 28 is closer to the free end of the flat nail block 18 than the first plane 27. The first plane 27 is used to abut against the bottom of the nail leg 29 when the flat nail block 18 swings to the lowest position and the nail leg 29 continues to move downward, so that the lower part of the nail leg 29 bends upward to complete the first bend. The second plane 28 is used to abut against the bent part of the nail leg when the flat nail block 18 swings upward after the nail leg 29 has completed the first bend, so that the bent part of the nail leg continues to bend upward until the flat nail block 18 swings to the highest position. The second bend is formed by the sum of the angles of the first and second bends, which is 90° plus the springback deformation angle of the nail leg 29. The angle between the first plane 27 and the second plane 28 is an obtuse angle. The angle of the first bend is the angle at which the nail leg 29 is bent as the flat nail block 18 swings to its lowest position and the nail leg 29 moves downward to its lowest position. The angle of the second bend is the angle at which the nail leg 29 is bent as the flat nail block 18 swings from its lowest position to its highest position after the first bend is completed. The springback deformation angle of the nail leg 29 is an empirical value obtained through multiple experiments.

[0044] The working process of the electric stapler of this invention is as follows:

[0045] Stabbing action: In the initial state, the center of the pitch circle of the final gear 13 deviates from the center of the arc of the arc hole 16 of the irregular piece 9. The irregular piece 9 rotates around the central axis 12. At the same time, the gear shaft 10 slides along the arc hole 16 and the upper cover shaft 11 slides up and down along the strip hole 15. The upper staple cover 2 rises first and then falls. After the upper staple cover 2 rises, the paper 31 to be stapled is inserted. During the descent of the upper staple cover 2, the staple assembly 32 is triggered to work. The staple leg 29 of the U-shaped staple 30 moves downward to abut against the first plane 27 of the flat staple block 18, and continues to move downward a certain distance. However, at this time, the flat staple block 18 has swung to the lowest position. Therefore, the staple leg 29 bends inward for the first time under the resistance of the flat staple block 18. The schematic diagram of the flat staple block 18 bending the U-shaped staple 30 for the first time is shown below. Figure 10 As shown;

[0046] Flat pin action: When the center of the pitch circle of the last stage gear 13 coincides with the center of the arc of the arc-shaped hole 16 of the profiled piece 9, as... Figure 6 As shown, the nailing action ends and the flat nailing action begins. The gear shaft 10 slides along the arc-shaped hole 16 while the irregular piece 9 and the upper nail cover 2 remain stationary. At the same time, the flat nail triggering mechanism 6 triggers the two flat nail blocks 18 inside the flat nail platform 3 to swing up and down, so as to bend the U-shaped nail 30 that enters the bending groove 17 of the flat nail platform 3. At the beginning of the flat nailing action, the nail leg 29 of the U-shaped nail 30 is still abutting against the first plane 27 of the flat nail block 18. Then, as the cam 19 rotates and drives the flat nail block 18 to swing upward, the nail leg 29 of the U-shaped nail 30 will abut against the second plane 28 of the U-shaped nail 30 and bend for the second time. The schematic diagram of the flat nail block 18 bending the U-shaped nail 30 for the second time is shown below. Figure 11 As shown, after the second bend, the rotation of cam 19 causes the flat nail block 18 to swing downwards, and the nail leg 29 of the U-shaped nail 30 leaves the second plane 28. Due to the springback deformation of the nail leg 29, the angle of the springback nail leg 29 is exactly 90°, which is a flat nail. Figure 12 As shown, when the gear shaft 10 slides to the other side of the arc-shaped hole 16, as Figure 7 As shown, the flat nailing action is completed; in this embodiment, the angle of the arc-shaped hole 16 is set to 120°. The final gear 13 rotates one revolution, performing a nailing action at the front 240° and a flat nailing action at the rear 120°; to clearly show each state, Figures 10-12 The image above shows the U-shaped nail 30 and the paper 31.

Claims

1. An electric stapler, comprising a base (1), wherein an upper staple cover (2) is hinged to one side of the base (1), and a flat stapler (3) is fixed to the other side; a stapler assembly (32) is provided on the upper staple cover (2); and a motor (4) and a transmission mechanism connected to the motor (4) are also provided on the base, characterized in that: The flat nailing platform (3) is also provided with a flat nail assembly (33). The upper nail cover (2) and the flat nail assembly (33) are both connected to the transmission mechanism. The transmission mechanism is used to control the upper nail cover (2) to rise, fall, and stop in sequence. When the upper nail cover (2) falls, the nailing assembly (32) is triggered to nail, and when the upper nail cover (2) stops, the flat nail assembly (33) is triggered to nail. The transmission mechanism includes a gear reduction mechanism (7) and an upper nail cover swing mechanism (5). The upper nail cover swing mechanism (5) includes two irregularly shaped pieces (9) symmetrically arranged on both sides of the base (1). The gear reduction mechanism (7) is provided with two synchronously rotating final stage gears (13), and the two final stage gears (13) are also symmetrically arranged on the left and right sides of the base (1). The upper nail cover swing mechanism (5) also includes two gear shafts (10), an upper cover shaft (11), and a central shaft (12). The two gear shafts (10) are respectively set on the outer surfaces of the two final gears (13) of the gear reduction mechanism (7). The upper cover shaft (11) passes through the upper nail cover (2) on the left and right. The central shaft (12) passes through the base (1) on the left and right. The two ends of the central shaft (12) are pivotally connected to the irregular piece (9). One end of the irregular piece (9) is connected to the gear shaft (10) of the corresponding final gear (13), and the other end is connected to the upper cover shaft (11) of the upper nail cover (2). It is used to drive the irregular piece (9) to move when the final gear (13) rotates so as to control the upper nail cover (2) to rise, fall, and stay still.

2. The electric stapler according to claim 1, characterized in that: The transmission mechanism also includes a flat nail triggering mechanism (6). The primary gear (8) of the gear reduction mechanism (7) is connected to the motor (4), the final gear (13) is connected to the input end of the upper nail cover swing mechanism (5) and the input end of the flat nail triggering mechanism (6), the output end of the upper nail cover swing mechanism (5) is connected to the upper nail cover (2), and the output end of the flat nail triggering mechanism (6) is connected to the flat nail assembly (33).

3. The electric stapler according to claim 2, characterized in that: The gear reduction mechanism (7) is a three-stage gear reduction mechanism (7).

4. The electric stapler according to claim 1, characterized in that: The irregularly shaped piece (9) is provided with a pivot hole (14), a strip hole (15), and an arc hole (16). The two ends of the central shaft (12) are pivotally connected to the irregularly shaped piece (9) through the pivot hole (14). The two ends of the upper cover shaft (11) are inserted into the strip holes (15) of the two irregularly shaped pieces (9). The two gear shafts (10) are inserted into the arc holes (16) of the two irregularly shaped pieces (9). When the center of the pitch circle of the last stage gear (13) deviates from the arc hole (16) of the irregularly shaped piece (9), When the center of the arc of the special-shaped piece (9) is reached, the special-shaped piece (9) rotates around the central axis (12), while the gear shaft (10) slides along the arc hole (16) and the upper cover shaft (11) slides up and down along the strip hole (15). The upper nail cover (2) rises first and then falls. When the center of the pitch circle of the last stage gear (13) coincides with the center of the arc of the arc hole (16) of the special-shaped piece (9), the gear shaft (10) slides along the arc hole (16) and the special-shaped piece (9) remains stationary, and the upper nail cover (2) remains stationary.

5. An electric stapler according to claim 4, characterized in that: The central shaft (12) is movably mounted on the base (1). The two ends of the central shaft (12) are connected to the base (1) through two elastic elements (26) to provide a downward pulling force to the central shaft (12).

6. An electric stapler according to claim 1, characterized in that: The flat nail table (3) is provided with a bending through groove (17), and the flat nail assembly (33) includes two flat nail blocks (18) that can swing up and down symmetrically arranged in the bending through groove (17) at left and right intervals. The flat nail blocks (18) are connected to the transmission mechanism.

7. An electric stapler according to claim 6, characterized in that: The transmission mechanism also includes a flat nail triggering mechanism (6). The primary gear (8) of the gear reduction mechanism (7) is connected to the motor (4), the final gear (13) is connected to the input end of the upper nail cover swing mechanism (5) and the input end of the flat nail triggering mechanism (6), the output end of the upper nail cover swing mechanism (5) is connected to the upper nail cover (2), and the output end of the flat nail triggering mechanism (6) is connected to two flat nail blocks (18).

8. An electric stapler according to claim 7, characterized in that: The flat nail triggering mechanism (6) includes a cam (19), a camshaft (20), and a lever (21). The two ends of the camshaft (20) are inserted into the center of the pitch circle of the two final gears (13) and rotate synchronously with the final gears (13). The cam (19) is mounted on the camshaft (20) and rotates synchronously with the camshaft (20). The lever (21) is mounted below the cam (19). One end of the lever (21) abuts against the cam (19), and the other end abuts against the bottom of the two flat nail blocks (18). The lever (21) is used to move up and down with the rotation of the cam (19) at the end of the lever (21) close to the flat nail block (18).

9. An electric stapler according to claim 8, characterized in that: The camshaft (20) is a hexagonal pin.

10. An electric stapler according to claim 8, characterized in that: The lever (21) includes a plate (22) and a fixed shaft (23) passing through the middle of the plate (22). The fixed shaft (23) is a cylindrical pin with both ends passing through the base (1).

11. An electric stapler according to claim 5, characterized in that: The flat nail table (3) is provided with a bending through groove (17). The flat nail assembly (33) includes two flat nail blocks (18) that can swing up and down symmetrically arranged in the bending through groove (17) at left and right intervals. The flat nail blocks (18) are connected to the transmission mechanism. The transmission mechanism also includes a flat nail triggering mechanism (6). The primary gear (8) of the gear reduction mechanism (7) is connected to the motor (4). The final gear (13) is connected to the input end of the upper nail cover swing mechanism (5) and the input end of the flat nail triggering mechanism (6). The output end of the upper nail cover swing mechanism (5) is connected to the upper nail cover (2). The output end of the flat nail triggering mechanism (6) is connected to the two flat nail blocks (18). The flat nail triggering mechanism (6) includes a cam (19), a camshaft (20) and a lever (21). The two ends of the camshaft (20) pass through the indexing of the two final gears (13) on the left and right. The center of the circle rotates synchronously with the final gear (13). The cam (19) is set on the camshaft (20) and rotates synchronously with the camshaft (20). The lever (21) is set below the cam (19). One end of the lever (21) abuts against the cam (19), and the other end abuts against the bottom of two flat nail blocks (18). It is used to make the end of the lever (21) close to the flat nail block (18) move up and down with the rotation of the cam (19). The lever (21) includes a plate (22) and a fixed shaft (23) passing through the middle of the plate (22). The fixed shaft (23) is a cylindrical pin and its two ends pass through the base (1) on the left and right. The central shaft (12) is located above the fixed shaft (23). The two elastic elements (26) at both ends of the central shaft (12) are connected to the two ends of the fixed shaft (23) respectively, which are used to provide a downward pulling force to the central shaft (12).

12. An electric stapler according to claim 8, characterized in that: The lever (21) has a first abutment (24) at the end near the cam (19) that engages with the cam (19).

13. An electric stapler according to claim 8, characterized in that: The lever (21) has a second abutment (25) at one end near the flat nail block (18) that mates with the bottom of the flat nail block (18).

14. An electric stapler according to claim 6, characterized in that: The upper surface of the flat nail block (18) includes a first plane (27) and a second plane (28) arranged on the left and right. The second plane (28) is closer to the free end of the flat nail block (18) than the first plane (27). The first plane (27) is used to make the flat nail block (18) abut against the bottom of the nail leg (29) when the flat nail block (18) swings to the lowest position and the nail leg (29) continues to move down, and make the lower part of the nail leg (29) bend upward to complete the first bend. The second plane (28) is used to make the nail leg (29) abut against the bent part of the nail leg when the flat nail block (18) swings upward after the nail leg (29) completes the first bend, and make the bent part of the nail leg continue to bend upward until the flat nail block (18) swings to the highest position to complete the second bend. The sum of the angle of the first bend and the angle of the second bend is 90º plus the spring deformation angle of the nail leg (29).

15. An electric stapler according to claim 14, characterized in that: The angle between the first plane (27) and the second plane (28) is an obtuse angle.

Images