Labor saving stapler

Abstract

A labor-saving stapler comprises an upper cover, a hinge, an upper blade assembly, a nail channel assembly and a support seat arranged in sequence from top to bottom, the tail ends of the upper cover, the upper blade assembly and the nail channel assembly are hingedly connected to the tail end of the support seat, the upper blade assembly is located outside the nail channel assembly, the hinge is located outside the upper blade assembly and is hingedly connected to the left and right sides of the upper blade assembly, a first guide part is arranged between the tail end of the hinge and the tail end of the upper cover, the first guide part comprises a rolling piece arranged at the top of the hinge and a guide surface arranged at the bottom of the upper cover, the guide surface is arranged in a structure capable of abutting against the rolling piece when the upper cover is pressed down and moving the rolling piece upward to the tail end of the upper cover and pressing it down. The labor-saving stapler has the advantages of reduced overall product width, simple appearance, more convenient installation and more reliable transmission of the nail hitting force.

Description

Technical Field

[0001] This utility model relates to the field of stapler technology, and specifically to a labor-saving stapler. Background Technology

[0002] A labor-saving stapler has recently emerged, achieving a certain labor-saving effect through the lever principle. For example, Chinese invention patent CN105328641B discloses a labor-saving stapler with the following structure: Figure 1 As shown, the device includes a support base 1a, a pin channel 2a, an upper blade assembly 3a, a hinge 4a, and an upper cover 5a. The tail ends of the pin channel 2a, the upper blade assembly 3a, and the upper cover 5a are all hinged to the tail end of the support base 1a. A first guide portion is provided on the two side walls of the upper cover 5a. One end of the hinge 4a is slidably connected to the first guide portion. A second guide portion is provided on the side wall of the support base 1a. The other end of the hinge 4a is slidably connected to the second guide portion. The middle part of the hinge 4a is hinged to the upper blade assembly 3a. The first guide portion includes a first sliding groove 6a provided on the upper cover 5a and a first shaft 7a provided at the rear end of the hinge 4a. The second guide portion includes a second sliding groove 8a with a rearward opening provided on the support base 1a and a second shaft 9a provided at the front end of the hinge 4a. When this labor-saving stapler is in use, when the top cover 5a is pressed down, the second shaft 9a at the front end of the hinge 4a moves towards the front of the support base 1a and enters the second slide groove 8a. At the same time, the first shaft 7a at the rear end of the hinge 4a moves towards the tail of the top cover 5a in the first slide groove 6a of the top cover 5a. The top cover 5a presses down the upper blade assembly 3a through the hinge 4a and presses out the staples in the staple track 2a, completing the stapleping action. When the top cover 5a is pressed down, the first shaft 7a in the first slide groove 6a moves quickly towards the tail of the top cover 5a, which reduces the resistance arm when the top cover 5a is pressed down. Thus, the more the top cover 5a is pressed down, the better the labor-saving effect.

[0003] However, existing labor-saving staplers still have the following technical problems: Firstly, because the first guide section is located and exposed on the left and right sides of the top cover, the overall width of the product is relatively large and the appearance is not simple enough. Secondly, the first guide section places the hinge 4a inside the top cover 5a, and the first shaft 7a of the hinge 4a needs to be installed into the first groove 6a of the top cover 5a, which is not very convenient. Furthermore, this first guide section causes the force acting on the top cover during staple making to not be directly transmitted to the hinge, but rather to be transmitted through the intermediate transmission between the first shaft 7a and the first groove 6a. This intermediate transmission leads to the accumulation of errors, making the transmission of staple making unreliable. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a labor-saving stapler with a reduced overall product width, simple appearance, more convenient installation, and more reliable transmission of staple force.

[0005] The technical solution of this utility model is: a labor-saving stapler, comprising, from top to bottom, an upper cover, a hinge, an upper blade assembly, a staple path assembly, and a support base. The tail ends of the upper cover, the upper blade assembly, and the staple path assembly are all hinged to the tail end of the support base. The upper blade assembly is located outside the staple path assembly. The hinge is located outside the upper blade assembly and is hinged in the middle to the left and right sides of the upper blade assembly. A first guide portion is provided between the tail end of the hinge and the tail end of the upper cover. The first guide portion includes a rolling element disposed at the top of the hinge and a guide surface disposed at the bottom of the upper cover. The guide surface is configured to abut against the rolling element and cause the rolling element to move towards the tail end of the upper cover and press down when the upper cover is pressed down.

[0006] With the above structure, this utility model has the following advantages:

[0007] The first guide section of this labor-saving stapler is not located on the left and right sides of the product, but is moved to the area between the bottom of the top cover and the top of the hinge. This avoids increasing the width of the left and right sides and prevents them from being exposed to the outside, thus reducing the overall product width and simplifying the appearance. Secondly, the guide surface of the top cover and the rolling element of the hinge directly abut against each other, making installation more convenient. More importantly, when staples are being made, the guide surface of the top cover directly presses against the rolling element of the hinge, so that the force acting on the top cover is directly transmitted to the hinge without passing through other transmission links, resulting in less error accumulation and more reliable transmission of staple force.

[0008] Preferably, the rolling element is a roller, and a first shaft is provided at the top of the tail end of the hinge. The roller is rotatably mounted on the tail end of the hinge via the first shaft. The roller has a simple structure, uniform force distribution, and can cooperate well with the guide surface to reduce friction. By cooperating with the guide surface, the contact area during rolling can be increased, avoiding excessive force and deformation of the guide surface caused by direct contact between the first shaft and the guide surface.

[0009] Preferably, the hinge has two lugs on its left and right sides at its tail end. The first shaft is mounted on the two lugs, and the roller is rotatably mounted between the two lugs via the first shaft. The lugs facilitate the installation of the first shaft and also limit the movement of the roller on its left and right sides.

[0010] Preferably, the bottom of the top cover has a protrusion, and the guide surface is disposed at the bottom of the protrusion. This arrangement facilitates the formation of the desired guide surface on the protrusion.

[0011] Preferably, the protrusion is injection molded from plastic, and the protrusion includes a plurality of sheet-like protrusions arranged side by side and spaced apart. Cutting the protrusion into a plurality of sheet-like protrusions can prevent shrinkage on the surface of the protrusion during injection molding.

[0012] Preferably, the system also includes a base, on which the support is mounted. A second guide portion is provided between the front end of the hinge and the base. This second guide portion is configured to allow the front end of the hinge to move towards the front end of the base when the top cover is pressed down, and to allow the front end of the hinge to disengage from the base when the top cover is opened. This configuration guides the movement of the front end of the hinge using the second guide portion, and the ability of the front end of the hinge to disengage from the base allows the top cover to open at a larger angle, making it easier to insert staples into the staple path assembly.

[0013] Preferably, the left and right sides of the hinge are located inside the left and right sides of the base. The second guide portion includes a groove on the inner sidewall of the base and a second shaft at the front end of the hinge. The front end of the groove is closed and the rear end has a first opening. When the top cover is pressed down, the second shaft slides towards the front end of the groove. When the top cover is opened, the second shaft slides towards the rear end of the groove and can disengage from the groove through the first opening. This second guide portion has a simple structure, occupies little space, and further reduces the overall product width.

[0014] Preferably, the base has sliding grooves on both its left and right sides, and the hinge has second shafts on both its left and right front ends. This arrangement ensures that second guide portions are provided between the left and right sides of the hinge and the left and right sides of the base, resulting in more even force distribution and more reliable guidance.

[0015] Preferably, the front section of the slide is a horizontal groove and the rear section is a curved groove, with the curved groove gradually curving upwards from front to back. The first opening is located at the tail end of the curved groove. A first elastic element is provided between the top of the hinge and the top of the upper blade assembly. The first elastic element guides the second shaft to align with the first opening of the slide and provides a force to the second shaft in the direction of the horizontal groove. This arrangement allows the second shaft to smoothly enter the slide using the force of the first elastic element when the staples are installed and the top cover is closed again, and keeps it within the horizontal groove, preventing it from easily slipping out.

[0016] Preferably, the middle part of the hinge is hinged to the left and right sides of the upper blade assembly via a third axis, and the tail ends of the upper cover, the upper blade assembly, and the nail channel assembly are hinged to the tail end of the bracket via a fourth axis. The second axis, the third axis, the first axis, and the fourth axis are arranged sequentially from front to back. This arrangement is reasonable, forms a stable and reliable labor-saving structure, and has a better labor-saving effect. Attached image description:

[0017] Figure 1 A schematic diagram of the structure of an existing labor-saving stapler;

[0018] Figure 2This is a schematic diagram of the structure of the labor-saving stapler of this utility model;

[0019] Figure 3 This is a cross-sectional view of the labor-saving stapler of this utility model;

[0020] Figure 4 An exploded view of the labor-saving stapler of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the labor-saving stapler after the top cover and base are hidden.

[0022] Figure 6 This is a schematic diagram of the structure of the top cover of the labor-saving stapler of this utility model;

[0023] Figure 7 This is a schematic diagram of the base of the labor-saving stapler of this utility model;

[0024] In the existing technical diagram: 1a-bracket base, 2a-screw track, 3a-upper blade assembly, 4a-hinge, 5a-upper cover, 6a-first slide groove, 7a-first shaft, 8a-second slide groove, 9a-second shaft;

[0025] In the figures of this utility model: 1-top cover, 2-hinge, 3-upper blade assembly, 4-nail track assembly, 5-support base, 6-rolling element, 7-guide surface, 8-first shaft, 9-ear, 10-protrusion, 11-sheet protrusion, 12-base, 13-sliding groove, 14-second shaft, 15-first opening, 16-horizontal groove, 17-curved groove, 18-first elastic element, 19-third shaft, 20-fourth shaft, 21-arc groove, 22-limiting block, 23-second opening, 24-stop block, 25-second elastic element, 26-nail groove. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Example:

[0028] like Figures 2-7 As shown, a labor-saving stapler includes an upper cover 1, a hinge 2, an upper blade assembly 3, a staple path assembly 4, and a support base 5 arranged sequentially from top to bottom. The tail ends of the upper cover 1, the upper blade assembly 3, and the staple path assembly 4 are all hinged to the tail end of the support base 5. The upper blade assembly 3 is located outside the staple path assembly 4. The hinge 2 is located outside the upper blade assembly 3 and is hinged in the middle to the left and right sides of the upper blade assembly 3. A first guide portion is provided between the tail end of the hinge 2 and the tail end of the upper cover 1. The first guide portion includes a rolling element 6 provided at the top of the hinge 2 and a guide surface 7 provided at the bottom of the upper cover 1. The guide surface 7 is configured to abut against the rolling element 6 when the upper cover 1 is pressed down, so that the rolling element 6 moves to the tail end of the upper cover 1 and presses down.

[0029] In this embodiment, the first guide section of the labor-saving stapler is not located on the left and right sides of the product, but is moved to the area between the bottom of the top cover 1 and the top of the hinge 2. This avoids increasing the width of the left and right sides and prevents them from being exposed externally, thus reducing the overall product width and simplifying the appearance. Secondly, the guide surface 7 of the top cover 1 and the rolling element 6 of the hinge 2 directly abut against each other, making installation more convenient. More importantly, when staples are applied, the guide surface 7 of the top cover 1 directly presses against the rolling element 6 of the hinge 2, allowing the force acting on the top cover 1 to be directly transmitted to the hinge 2 without passing through other transmission links, resulting in less error accumulation and more reliable staple force transmission. In this embodiment, the upper, lower, left, right, front, and rear directions are... Figure 2 As the standard.

[0030] The rolling element 6 is a roller, and a first shaft 8 is provided at the top of the tail end of the hinge 2. The roller is rotatably mounted on the tail end of the hinge 2 via the first shaft 8. The roller has a simple structure, uniform force distribution, and can cooperate well with the guide surface 7 to reduce friction. By cooperating with the guide surface 7, the contact area during rolling can be increased, avoiding the first shaft 8 directly contacting the guide surface 7, which would cause the guide surface 7 to be subjected to excessive force and deform.

[0031] Two lugs 9 are provided on the left and right sides of the tail end of hinge 2. The first shaft 8 is mounted on the two lugs 9, and the roller is mounted between the two lugs 9 by rotating through the first shaft 8. The lugs 9 facilitate the installation of the first shaft 8 and also limit the movement of the roller on both sides.

[0032] The bottom of the top cover 1 is provided with a protrusion 10, and a guide surface 7 is provided at the bottom of the protrusion 10. This arrangement facilitates the formation of the required guide surface 7 on the protrusion 10.

[0033] The protrusion 10 is injection molded from plastic and includes a plurality of sheet-like protrusions 11 arranged side by side and spaced apart. Dividing the protrusion 10 into a plurality of sheet-like protrusions 11 can prevent shrinkage from occurring on the surface of the protrusion 10 during injection molding.

[0034] It also includes a base 12, on which a support 5 is mounted. The base is also provided with a staple slot 26. A second guide is provided between the front end of the hinge 2 and the base 12. The second guide is configured to allow the front end of the hinge 2 to move toward the front end of the base 12 when the top cover 1 is pressed down, and to allow the front end of the hinge 2 to detach from the base 12 when the top cover 1 is opened. This configuration not only guides the movement of the front end of the hinge 2 using the second guide, but also allows the front end of the hinge 2 to detach from the base 12, enabling the top cover 1 to open at a larger angle, thus making it easier to insert staples into the staple path assembly 4.

[0035] The left and right sides of the hinge 2 are located inside the left and right sides of the base 12. The second guide part includes a slide groove 13 provided on the inner side wall of the base 12 and a second shaft 14 provided at the front end of the hinge 2. The front end of the slide groove 13 is closed and the rear end has a first opening 15. When the upper cover 1 is pressed down, the second shaft 14 slides towards the front end of the slide groove 13. When the upper cover 1 is opened, the second shaft 14 slides towards the rear end of the slide groove 13 and can disengage from the slide groove 13 through the first opening 15. This second guide part has a simple structure, occupies little space, and further reduces the overall product width.

[0036] The base 12 has sliding grooves 13 on both the left and right sides, and the hinge 2 has second shafts 14 on both the left and right sides of its front end. This arrangement ensures that there are second guide parts between the left and right sides of the hinge 2 and the left and right sides of the base 12, resulting in more even force distribution and more reliable guidance.

[0037] The front section of the slide groove 13 is a horizontal groove 16, and the rear section is a curved groove 17. The curved groove 17 gradually curves upward from front to back. The first opening 15 is located at the tail end of the curved groove 17. A first elastic element 18 is provided between the top of the hinge 2 and the top of the upper blade assembly 3. The first elastic element 18 guides the second shaft 14 to align with the first opening 15 of the slide groove 13 and provides a force to the second shaft 14 in the direction of the horizontal groove 16. This arrangement allows the second shaft 14 to smoothly enter the slide groove 13 and remain within the horizontal groove 16 when the top cover 1 is closed again after the staples are installed, using the force of the first elastic element 18.

[0038] The middle part of hinge 2 is hinged to the left and right sides of the upper blade assembly 3 via the third shaft 19. The tail ends of the upper cover 1, upper blade assembly 3, and nail channel assembly 4 are hinged to the tail end of the bracket base 5 via the fourth shaft 20. The second shaft 14, third shaft 19, first shaft 8, and fourth shaft 20 are arranged sequentially from front to back. This arrangement is reasonable and can form a stable and reliable labor-saving structure with better labor-saving effect.

[0039] The left and right sides of the top cover 1 are located inside the left and right sides of the base 12. The inner walls of the left and right sides of the base 12 have arc-shaped grooves 21, and the outer walls of the left and right sides of the top cover 1 have limiting blocks 22. The lower end of the arc-shaped groove 21 is closed, and the upper end has a second opening 23. A stop block 24 is provided in the middle of the arc-shaped groove 21. A second elastic element 25 is provided between the stapler assembly 4 and the support base 5. When the top cover 1 is pressed, the limiting block 22 slides between the lower end of the arc-shaped groove 21 and the stop block 24. When the top cover 1 is opened, the limiting block 22 can pass over the stop block 24 and slide out of the arc-shaped groove 21 through the second opening 23. This design, when not stapled, uses the stop block 24 to restrict the top cover 1 to a suitable opening angle; it also uses the stop block 24 to provide resistance when opening the top cover 1, preventing the stapler from falling out when the top cover 1 is opened due to the stapler being held upside down.

[0040] The working principle of the labor-saving stapler in this embodiment is as follows:

[0041] In use, press down the top cover 1, causing the upper blade assembly 3 and the staple path assembly 4 to rotate downwards around the fourth axis 20 of the support base 5 until the staple path assembly 4 presses against the paper; continue pressing down on the top cover 1, the guide surface 7 of the top cover 1 presses against the roller at the tail end of the hinge 2, the roller rotates around the first axis 8 and moves towards the tail end of the top cover 1 and presses down, then the hinge 2 rotates around the third axis 19 of the upper blade assembly 3, and the second axis 14 at the front end of the hinge 2 slides towards the front end of the slide groove 13, so that the hinge 2 uses the third axis 19 as the fulcrum and the first axis 8 as the power point. The second shaft 14 forms a lever structure with resistance point, which causes the upper cover 1 to press down the upper blade assembly 3 through the hinge 2 and press out the staples in the staple path assembly 4 to complete the stapleping action; when stapleping is required, the upper cover 1 is opened, the second shaft 14 at the front end of the hinge 2 disengages from the first opening 15 of the slide groove 13, and the upper cover 1 can be opened freely, so as to facilitate the insertion of staples into the staple path assembly 4; when the upper cover 1 is closed again, the first elastic element 18 guides the second shaft 14 to slide into the first opening 15 of the slide groove 13 and slide towards the horizontal groove 16 of the slide groove 13.

Claims

1. A labor-saving stapler, comprising, from top to bottom, an upper cover (1), a hinge (2), an upper blade assembly (3), a staple path assembly (4), and a support base (5), wherein the tail ends of the upper cover (1), the upper blade assembly (3), and the staple path assembly (4) are all hinged to the tail end of the support base (5), the upper blade assembly (3) is located outside the staple path assembly (4), the hinge (2) is located outside the upper blade assembly (3) and is hinged in the middle to the left and right sides of the upper blade assembly (3), and a first guide portion is provided between the tail end of the hinge (2) and the tail end of the upper cover (1), characterized in that: The first guide portion includes a rolling element (6) disposed at the top of the hinge (2) and a guide surface (7) disposed at the bottom of the upper cover (1). The guide surface (7) is configured to abut against the rolling element (6) and cause the rolling element (6) to move toward the tail end of the upper cover (1) and press down when the upper cover (1) is pressed down.

2. The labor-saving stapler according to claim 1, characterized in that: The rolling element (6) is a roller, and a first shaft (8) is provided at the top of the tail end of the hinge (2). The roller is rotatably mounted on the tail end of the hinge (2) through the first shaft (8).

3. The labor-saving stapler according to claim 2, characterized in that: The hinge (2) has two ears (9) on the left and right sides of its tail end. The first shaft (8) is mounted on the two ears (9), and the roller is rotatably mounted between the two ears (9) via the first shaft (8).

4. The labor-saving stapler according to claim 1, characterized in that: The bottom of the top cover (1) is provided with a protrusion (10), and the guide surface (7) is provided at the bottom of the protrusion (10).

5. The labor-saving stapler according to claim 4, characterized in that: The protrusion (10) is injection molded from plastic, and the protrusion (10) includes a plurality of sheet-like protrusions (11) arranged side by side and spaced apart.

6. The labor-saving stapler according to claim 2, characterized in that: It also includes a base (12), the bracket (5) is mounted on the base (12), and a second guide part is provided between the front end of the hinge (2) and the base (12). The second guide part is configured to allow the front end of the hinge (2) to move toward the front end of the base (12) when the upper cover (1) is pressed down, and to allow the front end of the hinge (2) to disengage from the base (12) when the upper cover (1) is opened.

7. A labor-saving stapler according to claim 6, characterized in that: The left and right sides of the hinge (2) are located inside the left and right sides of the base (12). The second guide part includes a slide groove (13) provided on the inner side wall of the base (12) and a second shaft (14) provided at the front end of the hinge (2). The front end of the slide groove (13) is closed and the tail end is provided with a first opening (15). When the upper cover (1) is pressed down, the second shaft (14) slides towards the front end of the slide groove (13). When the upper cover (1) is opened, the second shaft (14) slides towards the tail end of the slide groove (13) and can disengage from the slide groove (13) through the first opening (15).

8. The labor-saving stapler according to claim 7, characterized in that: The base (12) is provided with the sliding groove (13) on both the left and right sides, and the hinge (2) is provided with the second shaft (14) on both the left and right sides of the front end.

9. A labor-saving stapler according to claim 7, characterized in that: The front section of the slide (13) is a horizontal groove (16) and the rear section is a curved groove (17). The curved groove (17) gradually curves upward from front to back. The first opening (15) is located at the tail end of the curved groove (17). A first elastic element (18) is provided between the top of the hinge (2) and the top of the upper blade assembly (3). The first elastic element (18) guides the second shaft (14) to align with the first opening (15) of the slide (13) and provides a force to the second shaft (14) in the direction of the horizontal groove (16).

10. A labor-saving stapler according to claim 7, characterized in that: The middle part of the hinge (2) is hinged to the left and right sides of the upper blade assembly (3) via the third shaft (19). The tail ends of the upper cover (1), the upper blade assembly (3) and the nail channel assembly (4) are hinged to the tail end of the bracket (5) via the fourth shaft (20). The second shaft (14), the third shaft (19), the first shaft (8) and the fourth shaft (20) are arranged sequentially from front to back.

Images