JPH0111423Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The invention is a hand type used for office purposes, etc., and in particular, it is designed to easily load staples by pulling out the magazine toward the front. This is an invention related to the stapler.

[Conventional technology]

In a conventional stapler, three members, a base member, a handle member, and a magazine, are coaxially supported at the base end. When loading staples into the magazine, only the handle member is rotated rearward to open the upper part of the magazine. Furthermore, during use, the range of rotation of the handle member, magazine, and base member is usually restricted by a click mechanism to prevent the handle member from rotating unintentionally.

There is also an idea, as in Utility Model Publication No. 46-25251, in which the magazine is pulled out forward and a number of members are used to perform various movements as a stapler.

[Problem that the invention attempts to solve]

Conventional general staplers have the inconvenience of having to rotate the handle member each time to open the upper part of the magazine in order to load staples. Moreover, when returning to the use state, the staples are often inadvertently ejected, for example, due to the recoil that overcomes the click mechanism. moreover,
The back surface of the proximal end, which pivotally supports the three members, must be left open so that at least the handle member can rotate, and the internal mechanism is exposed, resulting in an unsightly appearance.

Furthermore, the structure described in Japanese Utility Model Publication No. 46-25251 not only has a complicated structure and may cause malfunctions, but also does not necessarily provide a well-balanced overall movement, making it impractical.

In view of these points, the present invention has a very simple structure as a whole, and the magazine is rotatable relative to the base member, and when the magazine is pulled out, the staple pressing member is locked inside the machine body. This invention devised a stapler that can be pulled out and easily loaded with staples.

[Means for solving problems]

The handle member 1, which has a claw 17 at its tip for driving out staples, and the base member 2, which has side walls 2a, 2a upright on approximately half of the proximal end, are rotated within a certain range necessary for driving out staples. Freely supported.

Long holes 6, 6 serving as guides are provided in the side walls 2a, 2a of the base member 2, and a magazine 5, which moves back and forth along the long holes, is disposed between the handle member 1 and the base member 2. A staple pressing member 8 biased forward by a coil spring 13 is provided in the magazine 5, and an engaging protrusion 14 is provided on the upper surface of this pressing member 8.

Separately from the magazine 5, the base end of a leaf spring 15 bent into a substantially L-shape is fixed to the base end of the base member 2. The front portion of the leaf spring 15 extends forward above the magazine 5, and a portion thereof comes into contact with the magazine 5 and the handle member 1.

A long hole 16 is provided in the forward portion of the leaf spring 15 in the moving direction of the magazine 5, and this long hole 16 is engaged with the engagement protrusion 14 of the pressing member 8.

[Effect]

When the handle member 1 is pressed, the staple located at the tip in the magazine 5 is ejected by the claw 17.

When the pressure on the handle member 1 is released, the leaf spring 1
5 maintains a constant distance between the magazine 5 and the handle member 1 by its own elasticity, and returns the handle member 1 upward. At this time, if the handle member 1 and the base member 2 are rotated only within the range necessary for firing the staples, there is no possibility that the handle member 1 will be opened wide upward.

To replenish the magazine 5 with staples, pull the magazine 5 forward. When the magazine 5 is pulled out forward, the engaging protrusion 14 of the pressing member 8 that urges the staples forward engages with the elongated hole 16 of the leaf spring 15 and is locked in a predetermined position. Therefore, the upper part of the pulled out magazine 5 is released from the staple pressing member, and new staples can be loaded therein. If the magazine 5 is pushed rearward, it returns to its original state of use.

[Embodiments] Hereinafter, embodiments of the stapler of the present invention will be described based on the attached drawings.

As understood from FIGS. 1 and 2, the handle member 1 and the base member 2 are pivotally supported at their proximal ends.

In the illustrated embodiment, the handle member 1 is formed to have a substantially U-shaped cross section, and shaft holes 4, 4 are bored in the base end portions of the side walls 1a, 1a. On the other hand, the base member 2 has side walls 2a, 2a erected between the base end and the middle thereof, which fit inside the side walls of the handle member, and at the base ends of the side walls 2a, 2a. axis 3,
3 is provided in a protruding manner and is fitted into the shaft holes 4, 4 so as to be freely rotatable.

The handle member 1 and the base member 2 do not necessarily need to be relatively wide apart as long as staples can be driven out. Therefore, in the illustrated example,
A pivot 3 is attached to the handle member and the base member respectively.
Alternatively, when a rear wall portion of an arcuate curved surface centered around the shaft hole 4 is molded and both are pivotally connected, only a gap X exists between the lower end of the rear wall portion of the handle member and the upper end of the rear wall portion of the base member. I try to keep it.

In this way, both the handle member and the base member do not rotate unnecessarily large, and
The internal mechanism is covered by the rear wall portion, allowing for a clean design.

A magazine 5 is disposed between the handle member 1 and the base member 2, and is slidable in the front and rear directions with respect to the base member 2.

In order to make the magazine 5 slidable with respect to the base member 2, long holes 6, 6 are formed in the side walls 2a, 2a of the base member 2, and a protrusion 7 provided at the base end of the side wall of the magazine 5 is formed. , 7 are engaged. This results in
The magazine 5 can slide back and forth, and the protrusion 7
It is possible to rotate around the center.

However, a portion of the rear end of the magazine 5 is extended to form a leg shape, and the tip thereof is brought into contact with the surface of the base member 2. Further, on the lower surface of the magazine 5, a part of the bottom wall is cut into a U-shape and the inner part thereof is curved downward to form a spring piece 19, which is brought into contact with the surface of the base member 2. There is. Therefore, the magazine 5 is stabilized by the spring piece 19 and a portion of the rear end coming into contact with the base member.

However, as can be seen from FIG. 2, a plurality of concave grooves are carved on the surface of the base member to reduce contact resistance with the leg-shaped parts and spring pieces 19 that are part of the magazine 5, and the magazine 5 can be smoothly moved. I want it to move back and forth.

Note that the elongated hole 6 formed in the side wall 2a may be replaced by a groove, or a guide means such as a guide rod having a pair of opposing ridges.

A pressing member 8 for pressing the loaded staples against the front wall 5a is disposed in the gutter-shaped magazine 5 having a width that allows the staples to be inserted therein. This pressing member 8 has a substantially U-shaped cross section and presses the staple with its end face, and has flanges 9, 9 protruding outward on the side thereof, and is engraved on the inner surface of the side wall of the magazine 5. The guide grooves 10, 10 are engaged with each other. Further, a hooking piece 11 protruding from the bottom wall of the front end of the magazine 5,
A coil spring 13 is engaged between engagement pieces 12 protruding from the base end of the pressing member 8 to bias the pressing member 8 forward.

Incidentally, a fin-like engagement protrusion 14 is provided on the top wall of the pressing member 8 in a protruding manner.

A base end of a plate spring 15 formed into a substantially L-shape is fixed to the base end of the base member 2 . In the illustrated example,
Projections 23, 23 provided vertically at the base end of the base member 2
A base end portion of a leaf spring 15 made of synthetic fiber resin is fitted in between.

The front portion of the leaf spring 15 is formed into a chevron shape, and its apex portion is brought into contact with the inner surface of the handle member, and its tip portion is brought into contact with the upper surface of the side wall of the magazine 5.

A long hole 16 is provided in the front part of the leaf spring 15 in the front-rear direction, that is, in the moving direction of the magazine.
and the engaging protrusion 14 of the pressing member 8 are engaged with each other. In this engaged state, when in use, the front end of the pressing member 8 reaches the front end inside the magazine 5, and the magazine 5
When the machine is pulled forward, the engagement protrusion 14 engages with the front end of the elongated hole 16, and the pressing member is locked inside the machine.

In other drawings, 17 is a claw attached to the tip of the handle member 1, 21 is a staple seat fixed to the base member 2, 20 is a finger hook for pulling out the magazine forward, and 22 is a hook attached to the top surface of the base member 2. This is a concave stepped portion formed. Note that the magazine 5 can be freely pulled out forward and is independent of the movement of the pressing member. Therefore, protrusions 18, 18 are provided on the inner surface of the side wall of the magazine 5 to serve as guides for the claw 17 so that the claw 17 drives out only the staples located at the most extreme position in the magazine and to prevent erroneous firing.

Next, the operation status of the stapler according to the above embodiment will be explained.

In the state of use shown in FIG. 3, staples can be driven freely by pressing the huddle member. After firing the staples, the handle member 1 is moved by the leaf spring 15 and the magazine 5
are returned to their original positions by spring pieces 19 formed on their bottom walls.

To load staples into magazine 5, use the fourth
Hold the finger hook on the magazine 5 and pull it forward as shown in the figure.

When the magazine 5 is pulled out forward, the pressing member 8 is locked inside the machine by engaging with the elongated hole 16 of the leaf spring, and the upper part of the magazine 5 that has been pulled out is opened and the staples can be inserted there. Can be loaded freely. However, the convoluted spring 13 for biasing the pressing member 8 forward acts as a force for drawing the magazine 5 into the machine. For this reason, in the embodiment, a part of the magazine, that is, a leg portion at the rear end of the magazine, engages with a stepped portion 22 provided on the base member to prevent the magazine from being drawn into the machine. Therefore, as shown in FIG.
By lowering the rear end by the height of the stepped portion 22, the front side is slightly upwardly directed.

After loading staples, the front end of the magazine is pushed down, disengaged from the stepped portion 22, and pushed rearward, resulting in a ready state with staples loaded.

In the illustrated embodiment, the claw 17 and the coil spring 1
All parts other than 3 and seat 21 are made of synthetic resin and can be supplied at low cost, but the pivot and plate spring may be made of metal.

[Effect of idea]

According to the stapler of the present invention, in order to load staples, there is no need to make a large rotation of the handle member relative to other members, or to insert staples while pushing the staple pressing member in the magazine backward.

Further, the present invention has a very simple structure as a whole, has few failures, and can be provided at a low cost as a simple stapler.

[Brief explanation of the drawing]

The attached drawings show an embodiment of the stapler of the present invention, with Figure 1 being a side view, Figure 2 being an exploded perspective view, and Figure 2 being an exploded perspective view.
3 is a longitudinal sectional view of FIG. 1, and FIG. 4 is a longitudinal sectional view of the magazine with the magazine pulled out. 1...Handle member, 2...Base member, 1
a, 2a...Side wall, 3...Pivot, 4...Shaft hole, 5
...Magazine, 6...Long hole, 7...Protrusion, 8...
Pressing member, 13... Coil spring, 14... Engaging protrusion, 15... Leaf spring, 16... Long hole, 17...
Claw, 18... protruding piece, 19... spring piece, 22... stepped portion.

Claims (1)

[Scope of utility model registration request] A handle member 1 having a claw 17 for driving out staples at the tip and a base member 2 are pivotally supported at the base end, and the base member 2 is provided with left and right side walls 2a, 2a facing forward from the base end. , long holes 6, 6 serving as guides are bored in the side wall, and a magazine 5 is disposed between the handle member 1 and the base member 2 so as to move back and forth along the long holes 6, 6, and A substantially L-shaped leaf spring 15 is attached to the base end of the base member 2.
The proximal end of the handle member 1 is fixed, and the front end thereof is extended above the magazine 5, so that a part can be brought into contact with the inner surface of the handle member 1 and the other part can be brought into contact with the magazine 5, and a coil spring is installed inside the magazine 5. A staple pressing member 8 is provided which is biased forward by 13;
A stapler characterized in that an engaging protrusion 14 protruding from the pressing member 8 is engaged with a long hole 16 formed in a forward portion of a leaf spring 15.