Stapler

Abstract

The utility model discloses a stapler which comprises a paper carrying platform, a base arranged below the paper carrying platform, a staple feeding part arranged above the paper carrying platform, a handle arranged above the staple feeding part, a staple groove plate arranged on the paper carrying platform, and grooves with at least two lengths arranged on the staple groove plate, a plate groove for embedding a needle groove plate is formed in the paper carrying platform under the staple feeding part; a first shaft hole and a second shaft hole are correspondingly formed in the middle parts of the plate groove and the needle groove plate; the stapler further comprises a switching mechanism used for switching the grooves, the switching mechanism comprises a rotating shaft, and the top end of the rotating shaft sequentially penetrates through the first shaft holes from bottom to top and then is connected with the needle groove plate in a clamped mode through the second shaft holes. According to the stapler disclosed by the utility model, the switching of the stapling needle grooves of various specifications is realized through the switching mechanism, the expansion of application scenes is realized, meanwhile, the stapling efficiency and the stapling quality are also ensured, the structure is compact, and the use is more convenient.

Description

Technical Field

[0001] The utility model relates to a stapler. Background Art

[0002] Existing staplers are mostly used to bind small amounts of paper. If thicker paper is to be bound, the market requires a dedicated stapler. This type of stapler is not only large in structure, but is usually only suitable for one type of binding needle. For thinner or thicker paper, the binding needle is not sufficiently squeezed and deformed during the binding process, resulting in poor binding effect. At the same time, there are also problems such as poor binding efficiency and limited applicable scenarios. Utility Model Content

[0003] The technical problem to be solved by the present invention is to overcome the defects of the staplers in the prior art in that the binding effect for thicker paper is poor, the efficiency is low and the applicable scenarios are relatively limited, and a stapler is proposed.

[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0005] A stapler includes a paper loading platform, a base is provided below the paper loading platform, a stapler feeding part is provided above the paper loading platform, and a handle is provided above the stapler feeding part. The stapler is characterized in that: a needle groove plate is provided on the paper loading platform, and grooves of at least two lengths are provided on the needle groove plate; a plate groove for embedding the needle groove plate is provided on the paper loading platform directly below the stapler feeding part, and a first axial hole and a second axial hole are correspondingly provided in the plate groove and the middle part of the needle groove plate; the stapler also includes a switching mechanism for switching the grooves, and the switching mechanism includes a rotating shaft, and the top end of the rotating shaft passes through the first axial hole from bottom to top in sequence, and is then engaged with the needle groove plate through the second axial hole.

[0006] Preferably, the rotating shaft includes a dial seat with a U-shaped cross-section and a support column extending upward along the central axis of the dial seat, the support column includes a base column connected to the dial seat and a connecting column extending upward from the base column, and a step is provided at the connection between the base column and the connecting column; the top end of the connecting column is clamped with the needle groove plate through the second axial hole; a spring is sleeved on the base column, the upper end of the spring abuts against the inner surface of the base, and the lower end of the spring abuts against the dial seat; the switching mechanism also includes a pressure rod for driving the dial seat to rotate around the central axis of the first axial hole.

[0007] Preferably, a spring slot is provided on the top of the dial seat around the support column, and the lower end of the spring is located in the spring slot.

[0008] Preferably, a positioning post is provided on the base at a position directly below the needle groove plate, the top of the positioning post is provided with an opening, the dial seat is inserted into the positioning post from the opening, and two guide posts extending vertically upward are symmetrically provided inside the positioning post; the bottom of the dial seat is provided with a convex ring adapted to fit the pressure rod, the convex ring has two relatively protruding lower edges and a relatively raised lower edge, and there is a smooth and continuous transition between adjacent lower edges; a first fin and a second fin are provided on the outer wall of the convex ring with the lower edge extending obliquely upward in a clockwise direction, and the first fin and the second fin are centrally symmetrically distributed with the central axis of the positioning post as the center, and the lower edges of the first fin and the second fin are higher than the lower edge of the convex ring; an accommodating groove adapted to the guide post is formed between the opposite sides of the first fin and the second fin.

[0009] Preferably, the pressure rod includes a horizontal rod and a pry rod connected to the horizontal rod and extending obliquely upward, and the pry rod is symmetrically provided with two horizontal rotating shafts near the end of the horizontal rod; the base is provided with symmetrical support plates for supporting the pressure rod, and each of the support plates is provided with an axial hole adapted for the horizontal rotating shaft; the free end of the horizontal rod is provided with a C-shaped lifting portion, and the upper surfaces of the two ends of the C-shaped lifting portion are provided with upward protrusions, and the free end of the pry rod is provided with a pressing portion; after the horizontal rotating shaft is provided in the axial hole, the C-shaped lifting portion extends to the bottom of the dial seat and abuts against the bottom surface of the convex ring; the side wall of the positioning column is provided with a first slot passing through the opening for inserting the horizontal rod; the side wall of the base and the side wall of the paper loading platform are respectively provided with a second slot and a third slot for passing the pry rod, and the pressing portion extends to the outside of the side walls of the base and the paper loading platform.

[0010] Preferably, the middle part of the positioning column is provided with a pin extending upward and pointing to the middle part of the bottom surface of the dial seat, the bottom surface of the dial seat is provided with a pin hole opposite to the pin, and the height of the pin is greater than the thickness of the C-shaped lifting portion at the free end of the horizontal rod, and the pin extends upward from the middle of the C-shaped lifting portion to the pin hole.

[0011] Preferably, a baffle is further provided on the paper loading platform, the baffle is located at the rear end of the stapling and feeding portion, and a thickness scale is provided on the side wall of the baffle.

[0012] Preferably, a binding ruler for locating the distance between the stapler binding position and the edge of the paper is further provided between the stapler feeding portion and the baffle.

[0013] The above technical solution can achieve the following beneficial effects: the stapler in the utility model realizes the switching of binding needle grooves of various specifications through the switching mechanism, thereby expanding the applicable scenarios, while also ensuring the binding efficiency and binding quality, with a compact structure and more convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a stapler in a preferred embodiment of the present utility model.

[0015] Figure 2 yes Figure 1 Exploded view of the stapler.

[0016] Figure 3 yes Figure 1 Cross-section of the stapler in .

[0017] Figure 4 yes Figure 3 Enlarged view of part A in .

[0018] Figure 5 yes Figure 1 Schematic diagram of the structure of the dial base of the stapler.

[0019] Figure 6 yes Figure 5 Schematic diagram of the bottom structure of the middle dial seat.

[0020] Figure 7 yes Figure 1 Schematic diagram of the structure of the pressure rod of the stapler.

[0021] Figure 8 yes Figure 1 Schematic diagram of the structure of the stapler when the pressure rod and the dial seat cooperate.

[0022] Figure 9 yes Figure 1 Schematic diagram of the bottom structure of the stapler when the pressure rod and the dial base are in coordination. DETAILED DESCRIPTION

[0023] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0024] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] like Figure 1-9 As shown, the stapler in this embodiment includes a base 1, a paper loading platform 2, a stapler feeding portion 3 provided above the paper loading platform 2, and a handle provided above the stapler feeding portion 3. A needle groove plate 22 is provided on the upper surface of the paper loading platform 2, and two grooves 221, 222 are provided on the needle groove plate 22 for accommodating longer staples and shorter staples. A plate groove 21 for embedding the needle groove plate 22 is provided on the paper loading platform 2 directly below the stapler feeding portion 3, and the rear end of the bottom of the plate groove 21 is higher than the front end of the bottom of the groove, thereby preventing the needle groove plate 22 from rotating during the binding process. A first axial hole 211 and a second axial hole 223 are correspondingly provided in the middle of the plate groove 21 and the needle groove plate 22, and the inner diameter of the first axial hole 211 is larger than the second axial hole 223. The stapler also includes a switching mechanism for rotating the needle groove plate 22 to switch the groove. The switching mechanism includes a rotating shaft 4. The top end of the rotating shaft 4 passes through the first shaft hole 211 from bottom to top and is then engaged with the needle groove plate 22 through the second shaft hole 223.

[0026] Specifically, the rotating shaft 4 includes a dial base 41 with a U-shaped cross-section and a support column 42 extending upward along the central axis of the dial base 41. The dial base 41 and support column 42 are integrally formed. The support column 42 includes a base column 421 and a connecting column 422. The diameter of the base column 421 is larger than that of the connecting column 422, forming a step 423 at the junction of the two. The top of the connecting column 422 engages with the needle groove plate 22 through the second axial hole 223. The step 423 abuts the lower surface of the needle groove plate 22, supporting the needle groove plate 22 from the plate slot 21. A spring 5 is mounted on the base column 421. The upper end of the spring 5 abuts the inner surface of the paper loading platform 2, while the lower end of the spring 5 abuts the dial base 41. Specifically, a spring retaining groove 411 is provided at the top of the dial base 41, surrounding the support column 42. The lower end of the spring 5 is located within the spring retaining groove 411.

[0027] The switching mechanism also includes a pressure rod 6 for driving the rotating shaft 4 to rotate around the central axis of the first axis hole 211. The pressure rod 6 includes a horizontal rod 61 and a prying rod 62 connected to the horizontal rod 61 and extending obliquely upward. The end of the prying rod 62 near the horizontal rod 61 is symmetrically provided with two horizontal rotating shafts 63. The free end of the horizontal rod 61 is provided with a C-shaped lifting portion 611, and the upper surfaces of the two ends of the C-shaped lifting portion 611 are provided with upward protrusions 612, and the free end of the prying rod 62 is provided with a pressing portion 621. The base 1 is provided with a support plate 13 for supporting the pressure rod 6 symmetrically, and each support plate 13 is provided with an axis hole 131 adapted to the horizontal rotating shaft 63. After the horizontal rotating shaft 63 is provided in the axis hole 131, the C-shaped lifting portion 611 extends to the bottom of the dial seat 41.

[0028] A positioning post 11 is also provided on the base 1, directly below the needle groove plate 22. The top of the positioning post 11 is open, and the dial seat 41 is inserted into the positioning post 11 through the opening. Two guide posts 111 extending vertically upward are symmetrically provided inside the positioning post 11. The inner profile of the bottom cross-section of the positioning post 11 is adapted to the cross-section of the C-shaped lifting portion 611.

[0029] like Figure 6 As shown, the bottom surface of the dial base 41 forms a raised ring 412, which has two relatively protruding lower edges and one relatively raised lower edge, with a smooth and continuous transition between the adjacent lower edges. The relatively raised lower edges engage with the protrusion 612 of the C-shaped lifting portion 611. When the protrusion 612 is lifted upward, the dial base 41 as a whole (i.e., the rotating shaft 4) undergoes a first-stage rotation under the mutual restraint and guidance of the positioning post 11, the protrusion 612, and the relatively raised lower edges. In this embodiment, the first-stage rotation angle is 90 degrees.

[0030] Furthermore, the outer wall of the raised ring 412 is provided with a first fin 413 and a second fin 413', each of which extends clockwise and upward. These fins 413 and 413' are symmetrically arranged about the central axis of the positioning post 11. Receiving grooves 414 adapted to fit within the guide post 111 are formed between the opposing sides of the first and second fins 413, 413'. In the static state, a relatively protruding lower edge of the raised ring 412 faces one of the receiving grooves 414. The lower edges of the first and second fins 413, 413' are both higher than the lower edge of the raised ring 412. During the first-stage rotation, the lower edges of the first wing 413 and the second wing 413' cooperate with the guide post 111 to continue the first-stage rotation and perform the second-stage rotation. The second-stage rotation angle is 90 degrees. While performing the first-stage rotation and the second-stage rotation, the rotating shaft 4 is lifted upward, and then the spring 5 is compressed until the guide post 111 falls into the accommodating groove 414 opposite to the position of the initial state. The rotating shaft 4 falls vertically under the action of the restoring force of the spring 5, the step 423 is loosened from the paper-carrying plane 2, and the needle groove plate 22 falls back into the plate groove 21, completing a groove switching.

[0031] A pin 112 is provided in the middle of the positioning column 11, extending upward and pointing to the middle of the bottom surface of the dial seat. A pin hole 415 opposite to the pin 112 is formed on the bottom surface of the dial seat 41, and the height of the pin 112 is greater than the thickness of the C-shaped lifting portion 611. The pin 415 extends upward from the middle of the C-shaped lifting portion 611 to the pin hole 415, thereby ensuring that the C-shaped lifting portion always falls back to the initial position when lifted and lowered, ensuring that the rotating shaft 4 is always in a vertical horizontal plane when operating.

[0032] Furthermore, the sidewall of the positioning post 11 is provided with a first slot 113 extending through the opening for inserting the horizontal rod 61. The sidewalls of the base 1 and the paper loading platform 2 are provided with a second slot 12 and a third slot 23, respectively, for inserting the prying rod 62. A pressing portion 65 extends beyond the sidewalls of the base 1 and the paper loading platform 2. Pressing this pressing portion 65 causes the horizontal rod 61 to drive the C-shaped lifting portion 611 to lift the dial base 41, switching slots.

[0033] The paper loading platform 2 is also provided with a baffle 24 located at the rear end of the stapler feed unit 3. A thickness scale is provided on the sidewall of the baffle 24. This scale is marked according to the paper thickness compatible with the installed staples, making it easier to consider the thickness of the paper stack and select the appropriate staple and groove when stapling. A stapling scale 25 is also provided between the stapler feed unit 3 and the baffle 24 on the paper loading platform 2 to determine the distance between the staples and the edge of the paper at the binding position.

[0034] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A stapler comprising a paper loading platform, a base provided below the paper loading platform, a staple feeding unit provided above the paper loading platform, and a handle provided above the staple feeding unit, characterized in that: A needle groove plate is provided on the paper loading platform, and grooves of at least two lengths are provided on the needle groove plate; a plate groove for embedding the needle groove plate is provided on the paper loading platform directly below the stapler feeding part, and a first axial hole and a second axial hole are correspondingly provided in the plate groove and the middle part of the needle groove plate; the stapler also includes a switching mechanism for switching the grooves, and the switching mechanism includes a rotating shaft, and the top end of the rotating shaft passes through the first axial hole in sequence from bottom to top, and is then clamped with the needle groove plate through the second axial hole.

2. The stapler according to claim 1, characterized in that: The rotating shaft includes a dial seat with a circular cross-section and a support column extending upward along the central axis of the dial seat, the support column includes a base column connected to the dial seat and a connecting column extending upward from the base column, and a step is provided at the connection between the base column and the connecting column; the top end of the connecting column is clamped with the needle groove plate through the second axial hole; a spring is sleeved on the base column, the upper end of the spring abuts against the inner surface of the base, and the lower end of the spring abuts against the dial seat; the switching mechanism also includes a pressure rod for driving the dial seat to rotate around the central axis of the first axial hole.

3. The stapler according to claim 2, characterized in that: A spring slot is provided on the top of the dial seat around the support column, and the lower end of the spring is located in the spring slot.

4. The stapler according to claim 3, wherein: A positioning post is provided on the base at a position directly below the needle groove plate, and the top of the positioning post is provided with an opening, and the dial seat is inserted into the positioning post from the opening, and two guide posts extending vertically upward are symmetrically provided inside the positioning post; the bottom of the dial seat is provided with a convex ring adapted to fit the pressure rod, and the convex ring has two relatively protruding lower edges and a relatively raised lower edge, and there is a smooth and continuous transition between adjacent lower edges; a first fin and a second fin are provided on the outer wall of the convex ring, and the lower edge extends obliquely upward in a clockwise direction, and the first fin and the second fin are centrally symmetrically distributed with the central axis of the positioning post as the center, and the lower edges of the first fin and the second fin are higher than the lower edge of the convex ring; an accommodating groove adapted to the guide post is formed between the opposite sides of the first fin and the second fin.

5. The stapler according to claim 4, characterized in that: The cam is connected to the horizontal rod and extends obliquely upward, and two horizontal rotating shafts are symmetrically provided on the end of the prying rod near the horizontal rod; the base is provided with symmetrical support plates for supporting the pressure rod, and each of the support plates is provided with an axial hole adapted for the horizontal rotating shaft; the free end of the horizontal rod is provided with a C-shaped lifting portion, and the upper surfaces of the two ends of the C-shaped lifting portion are provided with upward protrusions, and the free end of the prying rod is provided with a pressing portion; after the horizontal rotating shaft is provided in the axial hole, the C-shaped lifting portion extends to the bottom of the dial seat and abuts against the bottom surface of the convex ring; the side wall of the positioning column is provided with a first slot that passes through the opening for inserting the horizontal rod; the side wall of the base and the side wall of the paper loading platform are respectively provided with a second slot and a third slot for passing the prying rod, and the pressing portion extends to the outside of the side walls of the base and the paper loading platform.

6. The stapler according to claim 5, characterized in that: A pin is provided in the middle of the positioning column, extending upward and pointing to the middle of the bottom surface of the dial seat. The bottom surface of the dial seat is provided with a pin hole opposite to the pin, and the height of the pin is greater than the thickness of the C-shaped lifting portion at the free end of the horizontal rod. The pin extends upward from the middle of the C-shaped lifting portion to the pin hole.

7. The stapler according to claim 6, characterized in that: The paper carrying platform is further provided with a baffle, which is located at the rear end of the stapling and feeding portion, and a thickness scale is provided on the side wall of the baffle.

8. The stapler according to claim 7, characterized in that: A binding ruler for locating the distance between the stapler binding position and the edge of the paper is also provided between the stapler feeding portion and the baffle.

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