TWI622470B - An Anvil Piece Of A Stapler - Google Patents

Abstract

The invention relates to an anvil for a stapler. The anvil for a stapler includes a body, a needle groove unit and a lead-out unit. The needle groove unit is recessed in the body and corresponding to a nail opening, the needle groove unit comprises at least one needle groove, each of the needle grooves is for receiving one of the nail pins, and each of the needle grooves is provided with a guide a guiding surface extending from the guiding path, wherein each of the blocking surfaces is configured to block the pin to be bent along the guiding path; the guiding unit is recessed in the body and communicates with the needle groove unit in a pulling direction The lead-out unit includes at least one lead-out slot, and each of the lead-out slots is provided with a lead-out surface, and each of the lead-out surfaces is provided for the bent stitch to abut against the slip.

Description

Anvil for stapler

The present invention relates to an anvil for a stapler.

The stapler is the most commonly used instrument tool, which mainly uses nails to pierce the objects to be nailed (such as multiple papers and different objects) and matches the needle grooves in the anvil relative to the nail opening. The unit bends the stitches, and then binds the objects to be nailed together to achieve the purpose of binding into a book or connecting different objects. For example, the anvil for the stapler disclosed in M527368, CN1305689, etc. .

It can be understood that, in the stapler mentioned above, the distance between the nail opening and the anvil is the maximum thickness that can be stapled by the stapler. However, it is neglected that when the staples are bound, the thickness will increase, and the staples will often be stuck in the needle groove, so that the bound items cannot be smoothly pulled out, or the stitches of the staples are deformed in the hard pull. However, it is impossible to actually set up articles that are constrained, and there are drawbacks that need to be improved.

Therefore, it is necessary to provide a novel and progressive anvil for a stapler to solve the above problems.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide an anvil for a stapler that allows a stapled article (plurality of paper) to be smoothly pulled away from the stapler by the use of a stapler when the maximum thickness of the stapler is used.

In order to achieve the above object, the present invention provides an anvil for a stapler, comprising a body, a needle groove unit and a lead-out unit. The needle groove unit is recessed in the body and corresponding to a nail opening, the needle groove unit comprises at least one needle groove, each of the needle grooves is for receiving one of the nail pins, and each of the needle grooves is provided with a guide a guiding surface extending from the guiding path, wherein each of the blocking surfaces is configured to block the pin to be bent along the guiding path; the guiding unit is recessed in the body and communicates with the needle groove unit in a pulling direction The ejecting direction is transverse to the guiding path and is away from the needle groove unit, the deriving unit includes at least one lead-out slot, and each of the lead-out slots is provided with a lead-out surface, and each of the lead-out surfaces is provided for bending The pins are slipped against each other.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Referring to FIG. 1 to FIG. 12, an embodiment of the present invention is shown. The anvil for the stapler 7 of the present invention comprises a body 1, a needle groove unit 2 and a lead-out unit 3.

The needle groove unit 2 is recessed in the body 1 and corresponding to a nail opening 71. The needle groove unit 2 includes at least one needle groove 21, and each of the needle grooves 21 is configured to receive a pin 81 of one of the nail pins 8. The needle groove 21 is provided with a stop surface 22 extending along a guiding path 61, each of the blocking surfaces 22 for blocking the stitch 81 to be bent along the guiding path 61; the lead-out unit 3 is recessed The body 1 communicates with the needle groove unit 2 in a direction away from the guide channel 61 and is away from the needle groove unit 2, and the lead-out unit 3 includes at least one The lead-out grooves 31 are provided, and each of the lead-out grooves 31 is provided with a lead-out surface 32, and each of the lead-out surfaces 32 is bent against the bent pin 81.

When the thicker object to be loaded (such as a plurality of sheets) is bound, the derivation unit 3 provides sufficient margin to the bent staple 8 so that the staple 8 is moved from the needle groove unit 2 to the lead After the unit 3, it can be slid away from the anvil along the lead-out surface 32. In other words, the operator can quickly and smoothly pull the stapled object away from the stapler 7 in the withdrawal direction 62. Moreover, the deriving unit 3 can also ensure that the pin 81 of the staple pin 8 is not deformed by unintended impact or obstruction during the pulling process, thereby ensuring the bonding between the pin 8 and the object to be loaded. stability.

In this embodiment, the anvil is further provided with two coupling holes 43. The guiding unit 3 is located between the two coupling holes 43. Each of the coupling holes 43 is connected to the stapler 7 through a coupling member 9 ( Not limited to manual, electric), the anvil can be positioned in the stapler 7. Moreover, the body 1 is made of a metal material, so that it has a relatively rigid structure to bend the pin 81 and has a better service life. In addition, the number of the at least one needle groove 21 is two, and the number of the at least one lead-out groove 31 is also two. The two-needle grooves 21 are spaced apart from each other in the withdrawal direction 62 and respectively communicate with the two lead-out grooves 31. The lead-out slot 31 does not penetrate the body 1 in the extraction direction 62, so that the body 1 can maintain a relatively complete structure without being easily broken. It can be understood that the arrangement position of the two needle grooves 21 is not limited to the above. In other embodiments, the two needle grooves may be integrally formed in the same straight line.

Preferably, the anvil further comprises a continuous groove 42. The through groove 42 extends through the body 1 and is transverse to the needle groove unit 2. When the shape of the anvil is slightly different due to a machining error, the groove 42 can provide a slight margin of deformation, and the anvil is smoothly assembled to the stapler 7. The through groove 42 is oblique to the needle groove unit 2 and the lead unit 3 to provide deformation in different degrees and directions. Moreover, if any debris falls on the needle groove unit 2, the stitch 81 can be pushed into the through groove 42 in the bending over fold, so that the debris does not hinder the movement of the stitch 81.

It is worth mentioning that the body 1 is provided with a first surface 11 and a second surface 12 opposite to each other to face the first surface 11. The body 1 has a trapezoidal shape, and the needle groove 21 is inclined. Toward the extraction direction 62, the two-needle grooves 21 are partially overlapped in the extraction direction 62. The needle groove 21 and the lead-out groove 31 are recessed from the first surface 11 toward the second surface 12, and the maximum depth of the needle groove 21 is greater than the maximum depth of the lead-out groove 31, and the stop surface 22 is further A step surface 41 is formed between the lead-out surface 32 and the step surface 41 to provide a lateral restraining force to the stitch 81 so as to be surely bent along the guiding path 61 during the bending process.

Preferably, the step surface 41 is obliquely extended from the blocking surface 22 in the withdrawal direction 62 to the lead-out surface 32. When the operator wants to pull away the binding object, the stitch 81 can be smoothly operated by an external force. The ground slips against the step 41 and is surely moved in the withdrawal direction 62 to disengage the needle groove. It can be understood that the lead-out slot 31 is further provided with a wall portion 33. Preferably, the wall portion 33 is connected to the lead-out surface 32 and the first surface 11 in an arc shape, which can also facilitate the slipping of the stitch 81. Move to disengage the export slot 31.

In the embodiment, the needle groove unit 2 and the lead-out unit 3 are formed on the body 1 by means of stamping, so that the overall manufacturing process of the anvil is convenient and fast. In the direction of the exiting direction 62, the needle groove 21 protrudes from the second surface 12, and the farthest distance from the convex portion of the needle groove 21 to the second surface 12 is equivalent to the first surface 11 to The distance of the second face 12. Similarly, the lead-out slot 31 protrudes from the second surface 12, and the farthest distance from the protruding portion of the lead-out slot 31 to the second surface 12 is substantially equal to the first surface 11 to the second surface 12 Half the distance.

More specifically, the first end portion 221 of the blocking surface 22 is received and introduced into the pin 81, and the second end portion 222 of the blocking surface 22 is for guiding the pin 81. The guiding path 61 is The first end portion 221 extends in a hook shape toward the second end portion 222 , and has a maximum depth at the first end portion 221 . The lead-out slot 31 is connected to the first end portion 221 in the pulling direction 62 . In order to ensure that the portion of the pin 81 that is bent after being bent is smoothly slid along the lead-out groove 31.

More specifically, each of the needle grooves 21 is further provided with a chamfered surface 23 obliquely to the first surface 11 , and the chamfered surface 23 extends from the second end portion 222 of the needle groove 21 in the withdrawal direction 62 to The other end portion 221 of the needle groove 21 is another. Moreover, a spacer block 5 is defined between the two needle grooves 21, and one of the top surfaces 51 of the spacer block 5 is lower than the first surface 11, and the opposite ends of the top surface 51 are respectively connected with the chamfered surface 23.

In summary, the anvil for the stapler of the present invention enables the bent nail to be smoothly moved from the needle groove to the lead-out groove, and can be slid on the lead-out surface of the lead-out groove to quickly disengage from the body, so When the operator binds the thicker nails, the nails can still be smoothly pulled out of the stapler without the problem of jamming, making the overall use very convenient.

1‧‧‧ Ontology
11‧‧‧ first side
12‧‧‧ second side
2‧‧‧ditch unit
21‧‧‧Ditch
22‧‧‧stop surface
221‧‧‧ first end
222‧‧‧ second end
23‧‧‧ Oblique cut surface
3‧‧‧Export unit
31‧‧‧Export slot
32‧‧‧Extracted face
33‧‧‧ wall
41‧‧‧ step
42‧‧‧Tough
43‧‧‧Combination hole
5‧‧‧ interval block
51‧‧‧ top surface
61‧‧‧Guided path
62‧‧‧Drawaway direction
7‧‧‧ stapler
71‧‧‧ nail opening
8‧‧‧ staples
81‧‧‧ stitches
9‧‧‧Connected parts

1 is a perspective view of a stapler according to an embodiment of the present invention. 2 is a schematic view of an anvil separated from a stapler according to an embodiment of the invention. 3 to 7 are schematic views of an anvil according to an embodiment of the present invention at different viewing angles. Figure 8 is a cross-sectional view taken along line A-A of Figure 7; Figure 9 is a cross-sectional view taken along line B-B of Figure 7; Figure 10 is a cross-sectional view taken along line C-C of Figure 7; Figure 11 is a schematic illustration of the withdrawal of the stapled material. Figure 12 is a cross-sectional view of Figure 11 .

Claims (10)

An anvil for a stapler, comprising: a body; a needle groove unit recessed in the body and corresponding to a nail opening, comprising at least one needle groove, each of the needle grooves for receiving a nail a pin, each of the pin grooves is provided with a stop surface extending along a guiding path, each of the blocking surfaces for blocking the pin to be bent along the guiding path; a lead-out unit recessed on the body And connecting the needle groove unit in a direction away from the guide path and away from the needle groove unit, the lead-out unit includes at least one lead-out slot, and each of the lead-out slots is provided with a The lead-out faces are provided, and each of the lead-out faces is bent against the bent pin. The anvil for a stapler according to claim 1, further comprising a continuous groove, the groove passing through the body and transverse to the needle groove unit. The anvil for a stapler according to claim 1, wherein the number of the at least one needle groove is two, and the number of the at least one lead groove is two, and the two needle grooves are respectively connected to the extraction direction. Two export slots. The anvil for a stapler according to claim 3, wherein the body is provided with a first surface and a second surface opposite to each other, the needle groove and the guiding groove are oriented by the first surface toward the second surface The surface is recessed, and the maximum depth of the needle groove is greater than the maximum depth of the lead-out groove, and a step surface is formed between the stop surface and the lead-out surface, the step surface is obliquely extended by the stop surface along the withdrawal direction Connect to the exported face. An anvil for a stapler according to claim 4, wherein a first end of the stop surface is for receiving and introducing the pin, and a second end of the stop surface is for guiding the pin, the guide The lead-in path has a hook shape extending from the first end portion toward the second end portion, and has a maximum depth at the first end portion, and the lead-out groove corresponds to the first end portion in the pulling direction. An anvil for a stapler according to claim 5, wherein each of the needle grooves is further provided with a chamfered surface oblique to the first surface, the chamfered surface being along a second end of the needle groove The withdrawal direction extends to the other end of the other of the needle grooves. The anvil for a stapler according to claim 4, wherein the needle groove protrudes from the second surface along the direction of the withdrawal, and the convex portion of the needle groove is to the second surface The farthest distance is equivalent to the distance from the first face to the second face. An anvil for a stapler according to claim 7, wherein the lead-out groove protrudes from the second face and the convex portion of the lead-out groove to the second face The farthest distance is approximately equal to half the distance from the first face to the second face. The anvil for a stapler according to any one of claims 1 to 8, wherein the needle groove unit and the lead-out unit are formed on the body by stamping. The anvil for a stapler according to claim 6, further comprising a continuous groove, the groove is disposed through the body and transverse to the needle groove unit; and the needle groove is convex along the direction of the withdrawal For the second side, and the farthest distance from the convex portion of the needle groove to the second surface is equivalent to the distance from the first surface to the second surface; the lead-out slot is viewed along the direction of the extraction Projecting from the second surface, and the farthest distance from the protruding portion of the lead-out groove to the second surface is substantially equal to a half of the distance from the first surface to the second surface; the needle groove unit and the lead-out unit are via Stamping is formed on the body; the lead-out groove does not penetrate the body in the pulling direction; to face the first face view, the needle groove is oblique to the pulling direction, and in the pulling direction The two needle grooves are partially overlapped; the anvil is further provided with two coupling holes, and the outlet unit is located between the two coupling holes, and each of the coupling holes is connected to a stapler through a coupling member; The slot is further provided with a wall portion which is connected to the lead-out surface and the first surface in an arc shape; The body is formed in a trapezoidal shape; the system is composed of a metal material; a spacer block is defined between the two needle grooves, and a top surface of the spacer block is lower than the first surface, and opposite ends of the top surface are respectively connected There is the chamfered surface; the through groove is oblique to the needle groove unit and the lead-out unit.