JP4522810B2 - Closing device for rear opening of portable stapler - Google Patents

Description

  The present invention includes a needle receiving frame and an operation frame pivotally attached to each other at a base portion on the rear end side with a front end as a free end, and a rear of a portable stapler in which a needle storage frame is interposed between both the frames. The present invention relates to a closing device for a side opening.

  The needle receiving frame and the operation frame are pivotally attached to each other at the base portion on the rear end side, and the binding needle loaded in the needle housing frame interposed between the both frames is pushed out to one by operating the operation frame. A portable stapler in which a paper sheet is bound so that the front end of the binding needle is pressed against a needle receiving plate installed on the front end side of the needle receiving frame is well known.

  In the stapler, the bases on the rear end side are assembled to each other by the support shaft, and the upper surface side of the needle storage frame needs to be opened when the staple needle is loaded into the needle storage frame. It has a structure that must be reversed backward in the center.

  Since the conventional stapler is left in a state where each frame such as the operation frame on the rear end side is opened in use, that is, since there is an opening on the rear end side, for example, as described above When the operation frame is reversed backward, there is a risk that the fingertip may be pinched inadvertently, and the appearance is not good in the opened state.

  The present invention has been devised to eliminate such drawbacks of the conventional portable stapler, and to provide a stapler that is safer than the conventional stapler and has a good appearance.

  In a portable stapler having a base frame and an operation frame pivotably attached to each other at the rear end side base portion, a needle receiving frame is interposed between the two frames, and a back side direction is formed by an elastically deformable material. And a base piece of the sleeve piece is fixed to the base part of the base frame, and the distal end side is a free end and is fitted inside the operation frame. It is what.

  According to the present invention, the opening on the rear end side of the office stapler is surely worn by the closing piece, and the reversing operation of the operation frame that is performed when the staple is loaded into the needle housing frame is performed without any inconvenience. A fingertip is never sandwiched between frames such as a frame, and a portable stapler having a good appearance can be provided.

  The drawings show an embodiment of the closing device for the rear opening of the portable stapler according to the present invention. FIG. 1 is a longitudinal sectional view with a part omitted, FIG. 2 is a side view of FIG. FIG. 3 is a perspective view of a jacket piece.

  In the figure, reference numeral 1 denotes a base frame provided with a needle receiving disc 2 at its tip, and support part pieces 1a, 1a are erected relative to the rear end of the base frame 1, and a main shaft 3 is attached to the support part pieces 1a, 1a. As a result, the needle housing frame 4 and the needle operation frame 5 are pivotally attached at the rear end portion, and the operation frame 6 is pivotally pivoted at the rear end portion by the shafts 7 and 7 disposed above the main shaft 3. I wear it.

  The needle housing frame 4 is configured such that the pusher 8 is slid and the staple is fed into the discharge port 9 at the tip, and is arranged on the rear side so as to be interposed between the rear portion of the base frame 1. A return spring 10 holds a gap (for interposing a paper sheet) with the base frame 1 (needle receiving disc 2), and the needle operation frame 5 is provided with a needle pressure reducing rod 11 at the tip. A main frame 5A and an auxiliary frame 5B (to be used as a needle presser) arranged on the inner side of the main frame 5A, a second return spring 12 having a spring property stronger than the return spring 10 is provided between the frames 5A and 5B. One end of an intermediate piece 13 disposed on the main body frame 5A is pivotally pivoted by a first connecting shaft 16 at an intermediate portion in the front-rear direction of the main body frame 5A. A horizontally long receiving hole 14 is provided in the front upper piece 5A ', and the front end of the dressing piece 15 is locked to this. It is to so that.

  The mediating piece 13 is formed by connecting side pieces 13a and 13a relative to a central piece 13b, and an intermediate portion of the needle operation frame 5 (main body frame 5A) is interposed between the side pieces 13a and 13a. As described above, one end side of the side piece 13a is pivotally attached to the main body frame 5A of the needle operation frame 5 by the first connecting shaft 16 as described above, and the other end side is the side piece 13a (of the side piece 13a). At the other end), the second connecting shaft 17 is pivotally attached to the operation frame 6.

  The operation frame 6 is composed of a main frame formed by bending a metal plate like the base frame 1 and a synthetic resin decorative frame arranged so as to cover the surface of the main frame, and the central piece 6a. It consists of side piece 6b, 6b provided relatively along the longitudinal direction (front end direction) of the central piece 6a, and the rear end portion of the side piece 6b is supported by the shaft 7 with the shaft 7 as described above. While caulking to the piece 1a, the side piece 13a of the mediating piece 13 is connected to the intermediate part of the side piece 6b by the second connecting shaft 17 as described above.

  The jacket piece 15 is made of a hard synthetic resin that can be elastically deformed in the plate thickness direction, and is provided with a hinge portion 23 that is bulged in the back side direction and bent in the reverse direction (back side direction) in the middle portion. The side pieces 15c and 15c are provided on both sides of the horizontal piece 15b connected to the base end which is one end in the longitudinal direction of the curved main piece 15a, and the protrusion 18 is provided on the outer surface of the side piece 15c. And a tongue-like engaging portion 15d that protrudes in a bent shape at the central portion on the tip end side at the other end in the longitudinal direction of the main body piece 15a. The base frame 1 is fitted to the support piece 1a, 1a, and the protrusion 18 is locked in the through hole 19 provided in the support piece 1a so that the base end side is fixed to the rear end of the base frame 1. The other end that is the free end on the side of the locking piece 15d is fitted inside the central piece 6a of the operation frame 6, At the center along the longitudinal direction of the back surface of the body piece 15a, the guide protrusion 22 provided on the central part piece 6a of the operation frame 6 is engaged with the groove 21 provided on the tip side from the hinge part 23. Thus, the gap a ′ between the support pieces 1a and 1a of the base frame 1 and the gap a ″ between the side pieces 6b and 6b of the operation frame 6 are connected to each other to close the rear opening a. is there.

  Further, the covering piece 15 has a width in which each part of the main piece 15a substantially coincides with the gap width (inner diameter width) of the gap a ′ between the support pieces 1a and 1a or the gap a ″ between the side pieces 6b and 6b. The gap a ′, a ″ or the opening a is covered (covered), but both ends along the longitudinal direction constitute the gap a ′, a ″ (opening a) or the support piece 1a or Of course, the gap width and the width do not have to coincide with each other so as to come into contact with the inner edge of the side piece 6b. In short, it is possible to prevent the fingertip from entering the opening a and to satisfy the appearance. It ’s good.

  The state in which the opening a (gap a ′, a ″) is covered with the covering piece 15 is such that the bulging curved shape processed in a shape-retaining manner and one end on the side of the locking piece 15d are operated. The frame 6 is held on the lower surface of the rear end of the central piece 6a by pressure contact with elasticity in the thickness direction.

  Further, below the (surface) side of the central piece 6a of the operation frame 6, a movement path (gap) 20 sufficient for relatively moving (passing) one end of the dressing piece 15 on the locking piece 15d side. (In the embodiment, it is between the operation frame 6 and the intermediate piece 13 or the needle operation frame 5), and the receiving hole 14 is located at the tip position of the moving path 20, and the locking is performed. The arrangement is such that the piece 15d is locked thereto.

  In FIG. 1, when the distal end side of the operation frame 6 is pressed in the direction of the base frame 1 around the shaft 7, the operation frame 6 presses the needle operation frame 5 through the intermediate piece 13 and receives this pressure. The needle operation frame 5 tries to rotate and drop about the main shaft 3. However, since the return spring 10 is weaker than the second return spring 12, the pressing force appears on the return spring 10. As a result, the needle receiving frame 4 is pivoted and lowered about the main shaft 3 while being pushed by the needle operating frame 5 (auxiliary frame 5B), and is covered with the base frame 1 (needle receiving disc 2). A paper sheet that is a binding body is pinched.

  Then, when the rotation lowering operation of the operation frame 6 is continued, a force stronger than the elasticity of the second return spring 12 is applied to the needle operation frame 5 via the intermediate piece 13, so that the second return spring 12 Is reduced, and the pressing force associated with the reduction appears in the needle pressure lowering rod 11. The needle pressure lowering rod 11 strikes the staple in the needle housing frame 4 from the discharge port 9, and the needle housing frame 4 and the base frame 1 The sandwiched paper sheet is pierced and pressed against the needle receiving board 2 to perform a paper sheet binding operation.

  In this series of operations, the operation frame 6 is rotated about the rear end side shaft 7 as the front end side is pressed toward the base frame 1 via the needle housing frame 4 or the like. The (turning) operation appears as an action point at the connecting portion (second connecting shaft 17) of the intermediate piece 13 between the tip side and the shaft 7, so that a light pressing force against the operating frame 6 is applied by this principle. It appears as a large pressing force on the needle operation frame 5 and the like, and the needle binding operation can be performed easily. Further, during this series of operations, the dressing piece 15 maintains the state in which the tip thereof is in pressure contact with the central piece 6a of the operation frame 6 and maintains the closed state of the rear opening a.

  When the pressure on the operation frame 6 is released, the parts are returned to their original positions by the return springs 10 and 12.

  Then, when the operation frame 6 is inverted backward about the shaft 7, the needle operation frame 5 is connected to the operation frame 6 via the intermediate piece 13, so that the needle operation frame 5 is centered on the main shaft 3. As a result, the upper side of the needle housing frame 4 at the current position is opened, and the staple is loaded. At the time of the reversing operation centered on the shaft 7 of the operation frame 6 performed when the binding needle is loaded, the front end of the dressing piece 15 that closes the rear opening a on the side of the locking piece 15d is the reversal of the operation frame 6. Accordingly, the movement path (gap) 20 is moved relatively, and comes into contact with the upper piece 5A ′ of the main body frame 5A of the needle operation frame 5 that has been reversed along with the operation frame 6, and is relative to the upper piece 5A ′. Slidably contact with each other and engage with the receiving hole 14 provided in the upper piece 5A ′ at the final stage of the reversing operation.

  When the locking piece 15d is locked in the receiving hole 14 on the side of the needle operation frame 5A, the dressing piece 15 is pressed against the rear end edge of the central piece 6a of the operation frame 6 so that the hinge 22 is moved. As a boundary, the tip side is slightly reversed (warps back) so that it does not break following the movement of the operation frame 6.

  The portable stapler generally has a configuration in which three members, ie, a needle operation frame (main body frame), a needle housing frame, and a base frame, which are referred to in the embodiment, are pivotally attached at the rear end portion. There is no inconvenience even if the present invention is applied to a stapler configured with (in the embodiment, four members).

The longitudinal cross-sectional view which abbreviate | omitted and showed one part. The side view of FIG. Cloak.

Explanation of symbols

1 Base frame 5 Needle receiving frame 6 Operation frame 15 Dressing piece

Claims (1)

In a portable stapler having a base frame and an operation frame pivotably attached to each other at a base portion on the rear end side, and a needle-accommodating frame interposed between the two frames, a back side direction is provided by an elastically deformable material. A bent-shaped sleeve piece bulged to the base, the base end portion of the sleeve piece is fastened to the base portion of the base frame, and the distal end side is fitted into the inside of the operation frame as a free end; A device for closing a portable stapler rear opening.

Images