Flat staple trigger mechanism of stapler

Abstract

A stapler's flat-staple trigger mechanism includes a flat-staple block disposed on a flat-staple platform of a base and capable of moving up and down. The mechanism also includes a drive shaft, a cam, and a push block disposed on the base. The drive shaft is disposed behind the flat-staple block and has its ends rotatably mounted on opposite sides of the base. The cam is mounted on the drive shaft and rotates synchronously with the drive shaft. The push block is mounted within the base, with one end abutting against a side of the cam proximal to the flat-staple block and the other end having a first inclined surface abutting against a second inclined surface disposed at the bottom of the flat-staple block. A forward-backward translation structure is also provided between the push block and the base for pushing the push block forward and backward when the drive shaft drives the cam to rotate, thereby causing the flat-staple block to move up and down along the push block's first inclined surface. This stapler's flat-staple trigger mechanism has higher transmission accuracy and more stable and reliable movement.

Description

Technical Field

[0001] The present invention relates to the technical field of staplers, and in particular to a flat staple triggering mechanism of a stapler. Background Art

[0002] The conventional stapler's flat-stitch trigger mechanism generally utilizes a lever mechanism to trigger the up-and-down movement of the flat-stitch block, thereby achieving the flat-stitching action. However, the lever mechanism has low transmission accuracy, is prone to impact, and has an unsteady and unreliable movement. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a flat staple trigger mechanism for a stapler with higher transmission accuracy and more stable and reliable movement.

[0004] The technical solution of the present invention is: a flat nail trigger mechanism of a stapler, including a flat nail block that can move up and down and is arranged on the flat nail platform of the base, characterized in that it also includes a driving shaft, a cam, and a push block arranged on the base, the driving shaft is arranged behind the flat nail block and its two ends are rotatably installed on both sides of the base, the cam is installed on the driving shaft and rotates synchronously with the driving shaft, the push block is installed in the base, and one end is abutted against the side of the cam close to the flat nail block, and the other end is provided with a first inclined surface and abutted against the second inclined surface provided at the bottom of the flat nail block, and a forward and backward translation structure is also provided between the push block and the base, which is used to push the push block to move forward and backward when the driving shaft drives the cam to rotate, so that the flat nail block moves up and down along the first inclined surface of the push block.

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

[0006] The flat nail trigger mechanism of the stapler of the present invention utilizes a cam to drive the push block to move forward and backward, and a first inclined surface and a second inclined surface are provided between the push block and the flat nail block, so that the forward and backward movement of the push block can be converted into the up and down movement of the flat nail block. Compared with the traditional lever transmission structure, the translation structure of the cam plus the push block has higher transmission accuracy, is less likely to generate impact, and has smoother and more reliable movement.

[0007] Preferably, the front-to-back translation structure includes a first shaft and a second shaft, the first shaft being disposed in front of the second shaft with a horizontal distance therebetween. The first shaft has its ends fixed to the sides of the push block, while the second shaft has its ends fixed to the sides of the base. The base is provided with first horizontal slides on both sides that slidably engage with the ends of the first shaft, and the push block is provided with second horizontal slides on both sides that slidably engage with the second shaft. This front-to-back translation structure is provided with two sets of sliders and slides in the horizontal direction, making translation more stable. Furthermore, the arrangement of the first and second shafts facilitates the use of sliders at their ends.

[0008] Preferably, the front-to-back translation structure includes a first shaft and a second shaft, the first shaft being disposed in front of the second shaft with a horizontal distance therebetween. The first shaft has its ends fixed to the sides of the base, while the second shaft has its ends fixed to the sides of the push block. The push block is provided with first horizontal slots on both sides that slidably engage with the ends of the first shaft, and the base is provided with second horizontal slots on both sides that slidably engage with the second shaft. This front-to-back translation structure is provided with two sets of sliders and slots in the horizontal direction, making translation more stable. Furthermore, the arrangement of the first and second shafts facilitates the use of sliders at their ends.

[0009] Preferably, an elastic return device is provided between the first and second shafts to drive the push block to automatically retract following the cam. This arrangement enables the push block to automatically return, and the elastic return device can be installed on the first and second shafts, which not only facilitates installation but also enables structural reuse, further simplifying the overall structure.

[0010] Preferably, the elastic reset device comprises a tension spring, one end of which is connected to the first shaft, and the other end of which is connected to the second shaft. The elastic reset device has a simple structure and reliable reset.

[0011] Preferably, both ends of the first shaft are provided with first limit blocks sandwiched between the base and the push block. This arrangement can assist in guiding the movement of the push block, making the movement more stable and reliable.

[0012] Preferably, the two ends of the second shaft are provided with second limit blocks sandwiched between the base and the push block. This arrangement can assist in guiding the movement of the push block, making the movement more stable and reliable.

[0013] Preferably, the push block has a third inclined surface at one end close to the cam, and the push block abuts against the cam via the third inclined surface. This arrangement can make the connection between the push block and the cam more reliable, thereby effectively converting the radial size change of the cam into the forward and backward translation movement of the push block.

[0014] Preferably, the drive shaft is a hexagonal pin. This arrangement utilizes a simple structure to achieve synchronous rotation of the cam and the drive shaft.

[0015] Preferably, the push block is U-shaped with its opening facing downwards. Setting the push block to be U-shaped not only facilitates the installation of the first shaft and the second shaft, but also allows the tension spring to be hidden in the push block, resulting in a simpler and more compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the flat staple trigger mechanism of the stapler in Example 1 installed on the stapler;

[0017] Figure 2 This is a schematic structural diagram of the flat staple trigger mechanism of the stapler in Example 1 installed on the base;

[0018] Figure 3 Schematic diagram of the structure of the flat staple trigger mechanism of the stapler in Example 1;

[0019] Figure 4 This is another structural schematic diagram of the flat staple triggering mechanism of the stapler in Example 1;

[0020] In the figure: 1-base, 2-flat nail table, 3-flat nail block, 4-driving shaft, 5-elastic reset device, 6-cam, 7-push block, 8-first inclined plane, 9-second inclined plane, 10-front and rear translation structure, 11-first axis, 12-second axis, 13-first horizontal slide, 14-second horizontal slide, 15-first limit block, 16-second limit block, 17-third inclined plane. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Example 1:

[0023] like Figure 1-4 As shown, a flat nail trigger mechanism of a stapler includes a flat nail block 3 that can move up and down and is arranged on the flat nail table 2 of the base 1, and also includes a driving shaft 4, a cam 6, and a push block 7 arranged on the base 1. The driving shaft 4 is arranged behind the flat nail block 3 and its two ends are rotatably installed on both sides of the base 1. The cam 6 is installed on the driving shaft 4 and rotates synchronously with the driving shaft 4. The push block 7 is installed in the base 1, and one end is abutted against the side of the cam 6 close to the flat nail block 3, and the other end is provided with a first inclined surface 8 and abutted against the second inclined surface 9 provided at the bottom of the flat nail block 3. A forward and backward translation structure 10 is also provided between the push block 7 and the base 1, which is used to push the push block 7 to move forward and backward when the drive shaft 4 drives the cam 6 to rotate, so that the flat nail block 3 moves up and down along the first inclined surface 8 of the push block 7.

[0024] The front-rear translation structure 10 includes a first shaft 11 and a second shaft 12, the first shaft 11 is arranged in front of the second shaft 12 and the two are horizontally spaced a distance apart, the two ends of the first shaft 11 are fixed on both sides of the push block 7, and the two ends of the second shaft 12 are fixed on both sides of the base 1, and the two sides of the base 1 are provided with first horizontal sliding grooves 13 that slide with the two ends of the first shaft 11, and the two sides of the push block 7 are provided with second horizontal sliding grooves 14 that slide with the second shaft 12; an elastic reset device 5 is also provided between the first shaft 11 and the second shaft 12, which is used to drive the push block 7 to automatically retreat following the cam 6; the elastic reset device 5 includes a tension spring, one end of which is connected to the first shaft 11, and the other end is connected to the second shaft 12.

[0025] Both ends of the first shaft 11 are provided with first limit blocks 15 clamped between the base 1 and the push block 7; both ends of the second shaft 12 are provided with second limit blocks 16 clamped between the base 1 and the push block 7; the end of the push block 7 close to the cam 6 is provided with a third inclined surface 17, and the push block 7 is abutted against the cam 6 through the third inclined surface 17; the drive shaft 4 is a hexagonal pin; the push block 7 is U-shaped and the opening is facing downward.

[0026] The working principle of the flat staple trigger mechanism of the stapler of the present invention is as follows:

[0027] Before the flat nailing starts, the minimum diameter of the cam 6 abuts against the third inclined surface 17 of the push block 7, and the flat nailing block 3 is at the lowest point; when the flat nailing starts, the drive shaft 4 drives the cam 6 to rotate, and the rotation of the cam 6 makes the radial dimension of the abutment with the third inclined surface 17 larger and larger, thereby continuously pushing the push block 7 forward. During the movement of the push block 7, the two ends of the first shaft 11 slide in the first horizontal slide groove 13, and the two ends of the second shaft 12 slide in the second horizontal slide groove 14, and the push block 7 moves forward, which will cause the flat nailing block 3 to slide along the first inclined surface 8 of the first push block 7 to make the flat nailing When the maximum diameter of the cam 6 abuts against the third inclined surface 17, the flat nail block 3 moves to the highest point, and the flat nailing action is completed; then the cam 6 continues to rotate, so that the radial dimension abutting against the third inclined surface 17 becomes smaller and smaller, and then the push block 7 automatically follows the cam 6 to retreat backward under the tension of the tension spring, and the backward movement of the push block 7 will cause the flat nail block 3 to slide in the opposite direction along the first inclined surface 8 of the first push block 7, causing the flat nail block 3 to continue to descend. When the minimum diameter of the cam 6 abuts against the third inclined surface 17, the flat nail block 3 returns to the lowest point, waiting for the next flat nailing action.

[0028] Example 2:

[0029] The other structures of this embodiment are the same as those of Example 1, with the difference being the front-to-back translation structure 10. In this embodiment, the front-to-back translation structure 10 includes a first shaft 11 and a second shaft 12. The first shaft 11 is disposed in front of the second shaft 12 and the two are horizontally spaced a distance apart. The two ends of the first shaft 11 are fixed to the two sides of the base 1, and the two ends of the second shaft 12 are fixed to the two sides of the push block 7. The two sides of the push block 7 are provided with first horizontal slides 13 that slide with the two ends of the first shaft 11, and the two sides of the base 1 are provided with second horizontal slides 14 that slide with the second shaft 12. In Example 1, the first shaft 11 is fixed to the push block 7 and the second shaft 12 is fixed to the base 1. In this embodiment, the first shaft 11 is fixed to the base 1 and the second shaft 12 is fixed to the push block 7, so that the arrangement of the first horizontal slide 13 and the second horizontal slide 14 are also modified for applicability. The front-to-back translation structure 10 of Example 2 is similar to that of Example 1, and therefore is no longer shown in the figure.

[0030] The above embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention. For example, the above-mentioned front and rear translation structure 10 can also be that the first axis 11 and the second axis 12 are both set on the push block 7 and the first horizontal slide groove 13 and the second horizontal slide groove 14 are both set on the base 1, or the first axis 11 and the second axis 12 are both set on the base 1 and the first horizontal slide groove 13 and the second horizontal slide groove 14 are both set on the push block 7.

Claims

1. A staple trigger mechanism for a stapler, comprising a staple block (3) movable up and down on a staple table (2) of a base (1), characterized in that: The invention also includes a driving shaft (4), a cam (6), and a push block (7) arranged on the base (1), wherein the driving shaft (4) is arranged behind the flat nail block (3) and its two ends are rotatably mounted on both sides of the base (1), the cam (6) is mounted on the driving shaft (4) and rotates synchronously with the driving shaft (4), the push block (7) is mounted in the base (1), and one end is against the side of the cam (6) close to the flat nail block (3), and the other end is provided with a first inclined surface (8) and is against the second inclined surface (9) provided at the bottom of the flat nail block (3), and a forward and backward translation structure (10) is further provided between the push block (7) and the base (1), for pushing the push block (7) to move forward and backward when the driving shaft (4) drives the cam (6) to rotate, so that the flat nail block (3) moves up and down along the first inclined surface (8) of the push block (7), and a third inclined surface (17) is provided at one end of the push block (7) close to the cam (6), and the push block (7) is against the cam (6) through the third inclined surface (17).

2. The flat staple trigger mechanism of a stapler according to claim 1, characterized in that: The front-back translation structure (10) includes a first shaft (11) and a second shaft (12), wherein the first shaft (11) is arranged in front of the second shaft (12) and the two are horizontally spaced apart by a distance, the two ends of the first shaft (11) are fixed on the two sides of the push block (7), the two ends of the second shaft (12) are fixed on the two sides of the base (1), the two sides of the base (1) are provided with first horizontal sliding grooves (13) that are slidably matched with the two ends of the first shaft (11), and the two sides of the push block (7) are provided with second horizontal sliding grooves (14) that are slidably matched with the second shaft (12).

3. The flat staple trigger mechanism of a stapler according to claim 1, characterized in that: The front-rear translation structure (10) comprises a first shaft (11) and a second shaft (12), wherein the first shaft (11) is arranged in front of the second shaft (12) and the two are horizontally spaced apart by a distance, the two ends of the first shaft (11) are fixed on the two sides of the base (1), the two ends of the second shaft (12) are fixed on the two sides of the push block (7), the two sides of the push block (7) are provided with first horizontal sliding grooves (13) that are slidably matched with the two ends of the first shaft (11), and the two sides of the base (1) are provided with second horizontal sliding grooves (14) that are slidably matched with the second shaft (12).

4. A flat staple trigger mechanism for a stapler according to claim 2 or 3, characterized in that: An elastic reset device (5) is also provided between the first shaft (11) and the second shaft (12), for driving the push block (7) to automatically retreat following the cam (6).

5. The flat staple trigger mechanism of a stapler according to claim 4, characterized in that: The elastic reset device (5) comprises a tension spring, one end of which is connected to the first shaft (11), and the other end of which is connected to the second shaft (12).

6. The flat staple trigger mechanism of a stapler according to claim 2 or 3, characterized in that: Both ends of the first shaft (11) are provided with first limiting blocks (15) clamped between the base (1) and the push block (7).

7. The flat staple trigger mechanism of a stapler according to claim 2 or 3, characterized in that: Both ends of the second shaft (12) are provided with second limiting blocks (16) clamped between the base (1) and the push block (7).

8. The flat staple trigger mechanism of a stapler according to claim 1, characterized in that: The drive shaft (4) is a hexagonal pin.

9. The flat staple trigger mechanism of a stapler according to claim 1, characterized in that: The push block (7) is U-shaped and has an opening facing downward.

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