Labor saving stapler

Abstract

The utility model relates to a labor-saving stapler, which comprises, from top to bottom, an upper cover, a cutter holder assembly, a nail channel assembly and a support base, the tail ends of the upper cover, the cutter holder assembly and the nail channel assembly are hingedly connected to the support base through a first fixing shaft, a connecting frame is further arranged between the upper cover and the cutter holder assembly, the front end of the connecting frame is hingedly connected to the upper cover through a second fixing shaft, a first guide part is arranged between the middle part of the connecting frame and the cutter holder assembly for guiding the movement of the connecting frame relative to the cutter holder assembly, and a second guide part is arranged between the tail end of the connecting frame and the support base for guiding the movement of the connecting frame relative to the support base. The connection between the connecting frame and the upper cover of the labor-saving stapler is more reliable.

Description

Technical Field

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

[0002] Effort-saving staplers utilize the lever principle to achieve a certain level of effort reduction. For example, Chinese utility model patent CN218462107U discloses an effort-saving stapler. The structure of this effort-saving stapler is as follows... Figure 1 As shown, it includes a support base 1a, a top cover 2a, a tool holder assembly 3a, and a pin path assembly 4a. The tail ends of the top cover 2a, the tool holder assembly 3a, and the pin path assembly 4a are hinged to the support base 1a via a first shaft 5a. A connecting frame 6a is also provided between the top cover 2a and the tool holder assembly 3a. The front end of the connecting frame 6a is slidably connected to the top cover 2a via a first guide portion. The middle part of the connecting frame 6a is hinged to the outside of the middle part of the tool holder assembly 3a via a second shaft 7a. The tail end of the connecting frame 6a is located in front of the support base 1a, and a second guide portion 8a is provided between the two. This labor-saving stapler uses a connecting frame 6a to link the top cover 2a, the blade holder assembly 3a, and the support base 1a. When the top cover 2a is pressed down, the front end of the connecting frame 6a moves forward under the guidance of the first guide part, and the tail end of the connecting frame 6a moves backward under the guidance of the second guide part 8a. This causes the connecting frame 6a to press down the blade holder assembly 3a, which in turn causes the blade 11a of the blade holder assembly 3a to press down the staples in the staple path assembly 4a, thus completing the stapleping action.

[0003] However, existing labor-saving staplers have the following technical problems: Since the connecting frame 6a is fixed to the knife holder assembly 3a, a first guide part and a second guide part 8a need to be set between the connecting frame 6a and the upper cover 2a and between the connecting frame 6a and the support base 1a, so that the connecting frame 6a can move relative to the upper cover 2a and the support base 1a. Since the first guide part includes a third shaft 9a set on the left and right sides of the front end of the connecting frame 6a and a sliding groove 10a set on the left and right inner side walls of the upper cover 2a, the depth of the sliding groove 10a is limited by the wall thickness of the upper cover 2a, and the upper cover 2a is very easy to be pushed open to the left and right sides during the pressing process, so that the third shaft 9a is very easy to fall out of the sliding groove 10a, resulting in an unreliable connection between the connecting frame 6a and the upper cover 2a. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a labor-saving stapler with a more reliable connection between the connecting frame and the top cover.

[0005] The technical solution of this utility model is: a labor-saving stapler, comprising an upper cover, a blade assembly, a staple path assembly, and a support base arranged sequentially from top to bottom. The tail ends of the upper cover, the blade assembly, and the staple path assembly are hinged to the support base via a first fixed shaft. A connecting frame is also provided between the upper cover and the blade assembly. The front end of the connecting frame is hinged to the upper cover via a second fixed shaft. A first guide portion is provided between the middle part of the connecting frame and the blade assembly for guiding the movement of the connecting frame relative to the blade assembly. A second guide portion is provided between the tail end of the connecting frame and the support base for guiding the movement of the connecting frame relative to the support base.

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

[0007] This utility model of a labor-saving stapler achieves linkage between the top cover, the blade assembly, and the support base through a connecting frame. However, it changes the traditional connection relationship between them, fixing the connecting frame to the top cover and allowing the connecting frame to move relative to the blade assembly and the support base. Since the first guide part and the second guide part are transferred to the blade assembly and the support base, the front end of the top cover and the connecting frame are hinged through the second fixed shaft. Because the position of the shaft is fixed, the connecting frame is less likely to fall off the top cover, thus making the connection between the connecting frame and the top cover more reliable.

[0008] Preferably, the second fixed shaft is located at the front end of the upper cover. This arrangement results in better labor-saving performance.

[0009] Preferably, two positioning posts are provided on the left and right inner sidewalls of the top cover, and the second fixing shaft passes through the left and right sides of the connecting frame with its two ends respectively installed in the two positioning posts. The front end of the connecting frame is rotatably connected between the two positioning posts through the second fixing shaft. The positioning posts make the second fixing shaft more secure, thereby making the connection between the connecting frame and the top cover more reliable; in addition, the positioning posts also restrict the left and right movement of the front end of the connecting frame, further making the connection of the connecting frame more stable and reliable.

[0010] Preferably, the front end of the connecting frame is provided with two ears on each of its left and right sides. The two ears are respectively attached to the inner sides of the two positioning posts, and the front end of the connecting frame is mounted on the second fixed shaft via the two ears. This arrangement facilitates the mounting of the connecting frame to the second fixed shaft using the ears, and the placement of the two ears on the inner sides of the two positioning posts provides better lateral positioning of the front end of the connecting frame.

[0011] Preferably, the tool holder assembly is disposed outside the pin guide assembly, and the connecting frame is disposed outside the tool holder assembly. The first guide portion includes first guide holes disposed on the left and right sides of the middle portion of the connecting frame, and a first movable shaft disposed on the tool holder assembly. The middle portion of the connecting frame is hinged to the left and right sides of the tool holder assembly via the first movable shaft and the first guide holes. When the upper cover is pressed down, the first movable shaft slides backward relative to the first guide holes; when the upper cover is opened, the first movable shaft slides forward relative to the first guide holes. This first guide portion has a simple structure and can reliably guide the movement of the connecting frame relative to the tool holder assembly.

[0012] Preferably, the first guide hole is a through hole, and both ends of the first movable shaft protrude out of the two first guide holes respectively. This arrangement facilitates the installation of the first movable shaft onto the connecting frame and the tool holder assembly through the through hole, and the protrusion of both ends of the first movable shaft out of the two first guide holes makes the connection between the connecting frame and the tool holder assembly more reliable.

[0013] Preferably, the connecting frame is disposed outside the support base. The second guide portion includes second guide holes disposed on the left and right sides of the tail end of the connecting frame, and a second movable shaft disposed on the support base. The tail end of the connecting frame is hinged to the left and right sides of the support base via the second movable shaft and the second guide holes. When the top cover is pressed down, the second movable shaft slides forward relative to the second guide holes; when the top cover is opened, the second movable shaft slides backward relative to the second guide holes. This second guide portion has a simple structure and can reliably guide the movement of the connecting frame relative to the support base.

[0014] Preferably, the rear end of the second guide hole is provided with an opening, so that when the top cover is opened, the second movable shaft can disengage from the second guide hole through the opening, thereby separating the connecting bracket from the support base. The detachable connecting bracket from the support base allows the opening angle of the top cover to be unrestricted, making it easier to insert staples into the staple path assembly.

[0015] Preferably, the tool holder assembly has a mounting portion on its top, and the first movable shaft is disposed on the mounting portion and extends through the left and right sides of the mounting portion. This arrangement facilitates the installation of the first movable shaft using the mounting portion.

[0016] Preferably, the front end of the mounting part is hinged to the tool holder assembly and the rear end is snap-fitted to the tool holder assembly, with the first movable shaft disposed at the rear end of the mounting part. By disposing the first movable shaft at the rear end of the mounting part and snap-fitting the rear end of the mounting part to the tool holder assembly, the rear end of the mounting part can be opened, providing more installation space and making it easier to install the connecting bracket onto the tool holder assembly and the support base. Attached image description:

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

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

[0019] Figure 3 This is another structural diagram of the labor-saving stapler of this utility model in its open state;

[0020] Figure 4 This is a schematic diagram of the structure of the labor-saving stapler of this utility model in the open state with the base hidden.

[0021] Figure 5 This is a schematic diagram of the structure of the labor-saving stapler of this utility model in the open state with the top cover and base hidden.

[0022] Figure 6 This is a schematic diagram of the structure of the labor-saving stapler of this utility model in the open state with the top cover, connecting frame and base hidden.

[0023] Figure 7 This is a schematic diagram of the structure of the labor-saving stapler of this utility model in the staple-holding state;

[0024] Figure 8 This is a schematic diagram of the structure of the labor-saving stapler of this utility model in the open state with the top cover and base hidden.

[0025] In the existing technical diagram: 1a-bracket base, 2a-top cover, 3a-tool holder assembly, 4a-spin track assembly, 5a-first axis, 6a-connecting frame, 7a-second axis, 8a-second guide part, 9a-third axis, 10a-slide groove, 11a-blade;

[0026] In the figures of this utility model: 1-top cover, 2-blade holder assembly, 3-nail path assembly, 4-bracket base, 5-first fixed shaft, 6-connecting frame, 7-second fixed shaft, 8-first guide part, 9-second guide part, 10-positioning post, 11-ear part, 12-first guide hole, 13-first movable shaft, 14-second guide hole, 15-second movable shaft, 16-opening, 17-mounting part, 18-blade, 19-base. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Example:

[0029] like Figure 2-8As shown, a labor-saving stapler includes, from top to bottom, an upper cover 1, a blade holder assembly 2, a staple path assembly 3, and a support base 4. The tail ends of the upper cover 1, the blade holder assembly 2, and the staple path assembly 3 are hinged to the support base 4 via a first fixed shaft 5. A connecting frame 6 is also provided between the upper cover 1 and the blade holder assembly 2. The front end of the connecting frame 6 is hinged inside the upper cover 1 via a second fixed shaft 7. A first guide part 8 is provided between the middle part of the connecting frame 6 and the blade holder assembly 2 to guide the movement of the connecting frame 6 relative to the blade holder assembly 2. A second guide part 9 is provided between the tail end of the connecting frame 6 and the support base 4 to guide the movement of the connecting frame 6 relative to the support base 4. In this embodiment, the support base 4 is mounted on a base 19, and its upper, lower, left, right, front, and rear positions are arranged as follows: Figure 2 As the standard.

[0030] In this embodiment, the labor-saving stapler achieves linkage between the upper cover 1, the blade assembly 2, and the support base 4 through the connecting frame 6. However, it changes the traditional connection relationship between them, fixing the connecting frame 6 to the upper cover 1 and allowing the connecting frame 6 to move relative to the blade assembly 2 and the support base 4. Since the first guide part 8 and the second guide part 9 are transferred to the blade assembly 2 and the support base 4, the upper cover 1 and the front end of the connecting frame 6 are hinged through the second fixed shaft 7. Because the position of the shaft is fixed, the connecting frame 6 is less likely to fall off the upper cover 1, thus making the connection between the connecting frame 6 and the upper cover 1 more reliable.

[0031] The second fixed shaft 7 is located at the front end of the upper cover 1. This arrangement makes the effort-saving effect even better.

[0032] Two positioning posts 10 are respectively provided on the left and right inner side walls of the top cover 1. The second fixing shaft 7 passes through the left and right sides of the connecting frame 6 and its two ends are respectively installed in the two positioning posts 10. The front end of the connecting frame 6 is rotatably connected between the two positioning posts 10 through the second fixing shaft 7. The positioning posts 10 make the fixing of the second fixing shaft 7 more secure, thereby making the connection between the connecting frame 6 and the top cover 1 more reliable; and the positioning posts 10 also restrict the left and right movement of the front end of the connecting frame 6, further making the connection of the connecting frame 6 more stable and reliable.

[0033] Two ears 11 are provided on the left and right sides of the front end of the connecting frame 6. The two ears 11 are respectively attached to the inner sides of the two positioning posts 10. The front end of the connecting frame 6 is mounted on the second fixed shaft 7 through the two ears 11. This arrangement facilitates the installation of the connecting frame 6 onto the second fixed shaft 7 using the ears 11, and the fact that the two ears 11 are respectively attached to the inner sides of the two positioning posts 10 improves the lateral positioning effect of the front end of the connecting frame 6.

[0034] The tool holder assembly 2 is disposed outside the pin guide assembly 3, and the connecting frame 6 is disposed outside the tool holder assembly 2. The first guide part 8 includes first guide holes 12 disposed on the left and right sides of the middle part of the connecting frame 6, and a first movable shaft 13 disposed on the tool holder assembly 2. The middle part of the connecting frame 6 is hinged to the left and right sides of the tool holder assembly 2 through the first movable shaft 13 and the first guide holes 12. When the upper cover 1 is pressed down, the first movable shaft 13 slides backward relative to the first guide holes 12; when the upper cover 1 is opened, the first movable shaft 13 slides forward relative to the first guide holes 12. The first guide part 8 has a simple structure and can reliably guide the movement of the connecting frame 6 relative to the tool holder assembly 2.

[0035] The first guide hole 12 is a through hole, and both ends of the first movable shaft 13 protrude out of the two first guide holes 12 respectively. This arrangement facilitates the installation of the first movable shaft 13 onto the connecting frame 6 and the tool holder assembly 2 through the through hole, and the fact that both ends of the first movable shaft 13 protrude out of the two first guide holes 12 makes the connection between the connecting frame 6 and the tool holder assembly 2 more reliable.

[0036] The connecting frame 6 is disposed outside the support base 4. The second guide part 9 includes second guide holes 14 disposed on the left and right sides of the tail end of the connecting frame 6, and a second movable shaft 15 disposed on the support base 4. The tail end of the connecting frame 6 is hinged to the left and right sides of the support base 4 through the second movable shaft 15 and the second guide holes 14. When the upper cover 1 is pressed down, the second movable shaft 15 slides forward relative to the second guide holes 14; when the upper cover 1 is opened, the second movable shaft 15 slides backward relative to the second guide holes 14. The second guide part 9 has a simple structure and can reliably guide the movement of the connecting frame 6 relative to the support base 4.

[0037] An opening 16 is provided at the rear end of the second guide hole 14. When the top cover 1 is opened, the second movable shaft 15 can disengage from the second guide hole 14 through the opening 16, thereby separating the connecting frame 6 from the support base 4. The fact that the connecting frame 6 can be separated from the support base 4 makes the opening angle of the top cover 1 unrestricted, thus making it easier to insert staples into the staple path assembly 3.

[0038] The tool holder assembly 2 has a mounting portion 17 on its top, and a first movable shaft 13 is mounted on the mounting portion 17 and extends through both sides of the mounting portion 17. This arrangement facilitates the mounting of the first movable shaft 13 using the mounting portion 17.

[0039] The front end of the mounting part 17 is hinged to the tool holder assembly 2, and the rear end is snap-fitted to the tool holder assembly 2. The first movable shaft 13 is located at the rear end of the mounting part 17. By placing the first movable shaft 13 at the rear end of the mounting part 17 and snap-fitting the rear end of the mounting part 17 to the tool holder assembly 2, the rear end of the mounting part 17 can be opened, providing more installation space and making it easier to install the connecting bracket 6 onto the tool holder assembly 2 and the support base 4.

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

[0041] When in use, pressing down on the top cover 1 causes the blade holder assembly 2 and the stapler assembly 3 to rotate downwards around the first fixed axis 5 of the support base 4 until the stapler assembly 3 presses against the paper. Continuing to press down on the top cover 1, since the front end of the connecting frame 6 is hinged to the top cover 1, the force applied to the top cover 1 is transmitted to the front end of the connecting frame 6. This causes the connecting frame 6 to use the second movable axis 15 on the support base 4 as a fulcrum, continuing to transmit the force to the first movable axis 13 of the blade holder assembly 2. During this process, the hinge angle between the front end of the connecting frame 6 and the top cover 1 changes; the first movable axis 13 slides backwards relative to the first guide hole 12, and the second movable axis 15 slides forward relative to the second guide hole 14; the force is transmitted to the blade holder assembly 2... The force applied at the first movable shaft 13 causes the blade holder assembly 2 to continue transmitting force to the blade 18 at the front end of the blade holder assembly 2, with the first fixed shaft 5 as the fulcrum. This causes the blade 18 to press down on the staples in the staple path assembly 3 to complete the stapleping action. When the top cover 1 is released, the top cover 1, the blade holder assembly 2, and the staple path assembly 3 return to their initial positions. The first movable shaft 13 slides forward relative to the first guide hole 12, and the second movable shaft 15 slides backward relative to the second guide hole 14. When staples need to be inserted, the top cover 1 is opened, and the second movable shaft 15 disengages from the second guide hole 14 through the rear opening 16. The connecting frame 6 separates from the support base 4, and the top cover 1 can be opened at a larger angle, thus facilitating the insertion of staples into the staple path assembly 3.

Claims

1. A labor-saving stapler, comprising, from top to bottom, an upper cover (1), a blade holder assembly (2), a staple path assembly (3), and a support base (4), wherein the tail ends of the upper cover (1), the blade holder assembly (2), and the staple path assembly (3) are hinged to the support base (4) via a first fixed shaft (5), and a connecting frame (6) is further provided between the upper cover (1) and the blade holder assembly (2), characterized in that: The front end of the connecting frame (6) is hinged to the upper cover (1) through the second fixed shaft (7). A first guide part (8) is provided between the middle part of the connecting frame (6) and the tool holder assembly (2) to guide the connecting frame (6) to move relative to the tool holder assembly (2). A second guide part (9) is provided between the tail end of the connecting frame (6) and the support base (4) to guide the connecting frame (6) to move relative to the support base (4).

2. The labor-saving stapler according to claim 1, characterized in that: The second fixed shaft (7) is located at the front end of the upper cover (1).

3. The labor-saving stapler according to claim 1, characterized in that: Two positioning posts (10) are respectively provided on the left and right inner walls of the top cover (1). The second fixing shaft (7) passes through the left and right sides of the connecting frame (6) and its two ends are respectively installed in the two positioning posts (10). The front end of the connecting frame (6) is rotatably connected between the two positioning posts (10) through the second fixing shaft (7).

4. The labor-saving stapler according to claim 3, characterized in that: The front end of the connecting frame (6) is provided with two ears (11) on the left and right sides respectively. The two ears (11) are respectively attached to the inner side of the two positioning posts (10). The front end of the connecting frame (6) is mounted on the second fixed shaft (7) through the two ears (11).

5. The labor-saving stapler according to claim 1, characterized in that: The tool holder assembly (2) is disposed outside the nail channel assembly (3), and the connecting frame (6) is disposed outside the tool holder assembly (2). The first guide part (8) includes a first guide hole (12) disposed on the left and right sides of the middle part of the connecting frame (6) and a first movable shaft (13) disposed on the tool holder assembly (2). The middle part of the connecting frame (6) is hinged to the left and right sides of the tool holder assembly (2) through the first movable shaft (13) and the first guide hole (12). When the upper cover (1) is pressed down, the first movable shaft (13) slides backward relative to the first guide hole (12). When the upper cover (1) is opened, the first movable shaft (13) slides forward relative to the first guide hole (12).

6. The labor-saving stapler according to claim 5, characterized in that: The first guide hole (12) is a through hole, and the two ends of the first movable shaft (13) protrude out of the two first guide holes (12) respectively.

7. The labor-saving stapler according to claim 1, characterized in that: The connecting frame (6) is disposed outside the support base (4). The second guide part (9) includes a second guide hole (14) disposed on the left and right sides of the tail end of the connecting frame (6) and a second movable shaft (15) disposed on the support base (4). The tail end of the connecting frame (6) is hinged to the left and right sides of the support base (4) through the second movable shaft (15) and the second guide hole (14). When the upper cover (1) is pressed down, the second movable shaft (15) slides forward relative to the second guide hole (14). When the upper cover (1) is opened, the second movable shaft (15) slides backward relative to the second guide hole (14).

8. The labor-saving stapler according to claim 7, characterized in that: An opening (16) is provided at the rear end of the second guide hole (14). When the upper cover (1) is opened, the second movable shaft (15) can disengage from the second guide hole (14) through the opening (16), thereby separating the connecting frame (6) from the support base (4).

9. A labor-saving stapler according to claim 5, characterized in that: The top of the tool holder assembly (2) is provided with a mounting part (17), and the first movable shaft (13) is disposed on the mounting part (17) and passes through the left and right sides of the mounting part (17).

10. A labor-saving stapler according to claim 9, characterized in that: The front end of the mounting part (17) is hinged to the tool holder assembly (2) and the rear end is snapped to the tool holder assembly (2), and the first movable shaft (13) is disposed at the rear end of the mounting part (17).

Images