Electric stapler structure

The present invention provides an improved electric stapler structure, structured to include a housing and a staple slot fixing piece. A driving arm is located at one side within a mount corresponding to staple pushing pieces of the staple slot fixing piece. The staple pushing pieces are used to cause a spring piece of a pressure piece to squeeze a staple. Furthermore, a central bearing base is located at another side of the mount, so that when a stop piece of a hook ring separates from an inverted hook portion of the central bearing base, then a groove and buffering of a stop portion is used to block a protruding piece of a blocking piece, thereby preventing the central bearing base from flicking out in a split second due to the elastic force of a pull piece spring, and thus safeguarding safety of the user during use.

BACKGROUND OF THE INVENTION

(a) Field of the Invention

The present invention provides an improved electric stapler structure, wherein when a stop piece of a hook ring separates from an inverted hook portion of a central bearing base, then the central bearing base flicks open due to the elastic force of a pull spring, at which time the central bearing base then uses a protruding piece of a blocking piece in a groove of a central bearing jacket to function as a buffer and block.

(b) Description of the Prior Art

Referring toFIG. 1andFIG. 2, which show a conventional electric stapler A, wherein when a hook ring A1is pressed causing a stop piece A2to separate from an inverted hook portion A4of a central bearing base A3, then a pull spring A5flicks open the central bearing base A3. However, because of a momentary excessive elastic force of a pull spring A5that causes the central bearing base A3to flick out in a split second, thus, injury to a user or striking of peripheral objects easily results.

Hence, the inventor of the present invention proposes to provide an improved electric stapler structure to resolve and surmount existent technical difficulties to eliminate the aforementioned shortcomings of prior art.

SUMMARY OF THE INVENTION

The present invention provides an improved electric stapler structure, wherein when a stop piece of a hook ring separates from an inverted hook portion of a central bearing base, then the central bearing base flicks open due to the elastic force of a pull spring, at which time the central bearing base uses a protruding piece of a blocking piece in a groove of a central bearing jacket to function as a buffer and block, thereby preventing the central bearing base from flicking out in a split second due to the elastic force of the pulling spring and injuring a user.

To enable a further understanding of said objectives and the technological methods of the invention herein, brief description of the drawings is provided below followed by detailed description of the preferred embodiments.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring toFIG. 3andFIG. 4, which show an electric stapler B of an improved electric stapler structure of the present invention, comprising a housing I and a staple slot fixing piece E, moreover, a mount C is installed interior of the housing I of the electric stapler B, and a circuit board Cl and a motor C3are configured within the mount C. A drive shaft C4penetrates the motor C3to the exterior of the mount C to accommodate a gear C6which actuates a drive gear C7. A drive piece C8is located at one side of the drive gear C7, and an eccentric wheel C9is located at another side of the drive gear C7. A hexagonal spindle C10fixes the drive gear C7, and the drive piece C8and the eccentric wheel C9respectively located on two sides thereof.

The drive piece C8actuates a driving arm D relatively clasped to staple pushing pieces E1. Moreover, a plurality of staple slot insertion pins E4penetrate the staple pushing pieces E1and a staple slot positioner E2. Furthermore, a positioning piece E3abuts against lower sides of the staple pushing pieces E1. A staple slot spring E5is installed at another side of the positioning piece E, and another side of the staple slot spring E5is fixed to the staple slot fixing piece E. Moreover, the staple slot positioner E2, the staple pushing pieces E1, the positioning piece E3and the staple slot spring E5are clasped within the staple slot fixing piece E by means of relatively located piece members. A pressure bar G is correspondingly located at a side of the eccentric

wheel C9, and a pressure bar pin G2fixedly fastens the pressure bar G. Moreover, the pressure bar G extends to a corresponding pressure piece G1lateral thereof. The pressure bar G and the pressure piece G1are mutually fixed using a pressure piece pin G4. Pressure piece springs G3are respectively located two sides of the pressure piece G1. One side of the pressure piece springs G3abuts onto the pressure piece pin G4, and another side abuts onto the pressure piece G1. Furthermore, a spring piece G5is located on a side of the pressure piece G1. Screws G6are used to fixedly screw the spring piece G5to the pressure piece G1.

Furthermore, a slide base F is located on the mount C and clasped to a serrated slide track C5. A touch member F1is located on the slide base F, and a side of the touch member F1abuts against an activating member F2, and further abuts against a touch switch C2of the circuit board C. Moreover, a central bearing jacket H is located within the mount C. A hook ring H5is located at a side of the central bearing jacket H, and the hook ring H5is fixed by means of a pin H6inserted into the central bearing jacket H. Moreover, a guide wheel H9is located at another side of the central bearing jacket H, and a central bearing base H1is installed interior of the central bearing jacket H. A blocking piece H7is located interior of the central bearing base H, and a spring H8is located on an upper side of the blocking piece H7. An inner auxiliary H2and a mutually clasped pull piece H3are located on the central bearing jacket H. One end of a pull piece spring H4is fastened to the pull piece H3, and another end of the pull piece spring H4extends and penetrates the guide wheel H9and is mounted onto the hook ring H5.

Referring toFIG. 4,FIG. 5,FIG. 6,FIG. 7,FIG. 8,FIG. 9andFIG. 10, which show an embodiment of the improved electric stapler structure of the present invention, wherein the circuit board Cl and the motor C3are configured within the mount C. When a user causes articles J he wishes to bind with staples to abut against the touch member F1of the slide base F, then the touch member F1immediately abuts against the activating member F2, thereby pressing the activating member F2up against the touch switch C2on the circuit board Cl, whereupon the touch switch C2actuates rotation of the motor C3and causes the drive shaft C4of the motor C3to drive the gear C6. Rotation of the gear C6actuates the drive gear C7, and because the drive gear C7and the correspondingly located drive piece C8are mutually fixed by the hexagonal spindle C10, thus, actuation of the drive gear C7causes mutual driving of the drive piece C8, which pushes the correspondingly located driving arm D, thereby causing the driving arm D to actuate the staple pushing pieces E1of the staple slot fixing piece E, whereupon the pressure bar G downwardly presses the pressure piece G1via rotation of the eccentric wheel C9and causes the spring piece G5of the pressure piece G1to squeeze a staple K, which then pierces the articles J to be fastened together, whereupon a staple pushing portion E6fixedly secures the staple K.

The drive gear C7simultaneously drives the relatively located drive gear C8and the eccentric wheel C9when rotating. Moreover, the drive gear C8actuates the driving arm D by means of an actuating protruding piece C11nudging a driving arm jacket D1, whereupon a fixed hook portion D2of the driving arm D upwardly pulls hook bar portions E7of the staple pushing pieces E1, at which time movement of the staple slot positioner E2and the staple slot insertion pins E4tighten the staple pushing pieces E1and downwardly presses the positioning piece E3. When the actuating protruding piece C11rotates to another side, the positioning piece E3uses the elastic force of the staple slot spring E5to upwardly push the positioning piece E3. When the correspondingly located staple pushing pieces E1separate, then the hook bar portions E7of the staple pushing pieces E1simultaneously move downward and downwardly actuate the driving arm D.

When the articles J to be fastened together are made to abut against a push bar F6of the touch member F1, then movement of the touch member F1and the slide base F actuated by an actuating bar F4causes an abutting portion F5to abut against the activating member F2, whereupon the drive member F2simultaneously actuates the touch switch C2, which further actuates the motor C3. Furthermore, when the user wants to adjust binding depth of the articles J to be fastened together, a protruding body F3of the slide base F can be adjusted on the serrated track C5of the mount C.

When a user needs to replenish the staples K, a stop piece H10of the hook ring H5must be separated from an inverted hook portion H11of the central bearing base H1, whereupon a groove and buffering of a stop portion H14is used to block a protruding piece H12of a blocking piece H7, thereby enabling a holding portion H15to be used to withdraw the central bearing base, thereby preventing the central bearing base H1from flicking out in a split second due to the elastic force of the pull piece spring H4, and thus safeguarding safety of the user during use and preventing striking of peripheral objects.

In order to better explicitly disclose advancement and practicability of the present invention, its advantages are described below:

1. When the pull piece H3is subjected to the elastic force of the pull piece spring H4, the protruding piece H12of the blocking piece H7in the groove functions as a buffer and block.

2. An excessive elastic force does not cause the central bearing base H1to flick open in a split second, injuring a user or striking peripheral objects.

3. Improves safety and practicability.

4. Provided with industrial competitiveness.

5. Provided with commercial utility value.

6. Provided with originality.

In conclusion, practicability and advancement of the present invention clearly comply with essential elements as required for a new patent application. Accordingly, a new patent application is proposed herein.