JPH0441034A - Key reproducing method - Google Patents

Abstract

PURPOSE:To easily reproduce a key at a low cost by arraying and fixing a master key and a key base material in parallel, and pressing and positioning the individual key patterns of the master key to the front end of a puncher, then lowering the puncher. CONSTITUTION:The master key is mounted at the front end of an upper plate 28 and a stationary member 27 and the key base material is disposed at the front end of a lower plate 29 and the stationary member 27 by corresponding this material to the above-mentioned master key. A key holding means 16 is shifted forward until the front end of the key base material rides on a die 11. The puncher 14 is thereafter pressed to the valley part of the key pattern of the master key and a pressing handle 18 is pressed to form the one key pattern to the key base material by the puncher 14. While the key holding means 16 is laterally moved with respect to a revolving shaft 26, the above- mentioned stage is repeated, by which the key patterns corresponding to all the key peaks of the master key are formed on the key base material.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a key duplication method for duplicating keys by press processing.

[Conventional technology]

A conventional key duplication method uses a rotating cutter, moves the cutter to follow the original key to be duplicated, and forms a key thread on the key base material (blank key).

[Problem to be solved by the invention]

Therefore, since an apparatus using this method requires a rotating cutter, a motor for driving the cutter, etc., the overall size of the apparatus becomes large, making it inconvenient to carry.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a key duplication method that allows keys to be duplicated using an unprecedentedly simple method and that can be manufactured at low manufacturing costs.

[Means to solve the problem]

The key duplication method according to the present invention, which achieves the above object, uses a columnar puncher in which the individual key shapes of the key are formed at the tip thereof, and a die paired with the puncher, and uses the key duplication method to duplicate the original key to be duplicated. A new key base material to be duplicated is lined up and fixed, and the key thread forming part of the key base material is placed between the puncher and the die, and the individual key shapes of the original key are brought into contact with the tip of the puncher. The puncher is positioned with respect to the key base material, and then the puncher is lowered to form the key shape of the original key on the key base material, and by sequentially moving the key base material and the original key laterally, all of one side is removed. The key shape is formed on the key base material.

[Operation] In the key duplication method according to the present invention, a puncher having an individual key shape formed at the tip thereof and a die paired with the puncher are used to separate the original key to be duplicated and the key motherboard to be newly duplicated. By arranging and fixing the key base materials, placing the key thread forming part of the key base material between the puncher and the die, and bringing the individual key shapes of the original key into contact with the tip of the puncher, the key base material By determining the punch position and lowering the puncher, the key shape of the original key is duplicated on the key base material, and by moving horizontally in accordance with the pitch of each key shape, all key shapes are copied into the key material. It can be formed on the base material.

〔Example〕

Next, embodiments embodying the present invention will be described with reference to the attached drawings to provide an understanding of the present invention.

Here, FIG. 1 is a side view of a duplicate key duplicating machine using an embodiment method of the present invention, FIGS. 2 and 3 are enlarged sectional views of the same parts, and FIG. 4 is a view taken in the direction of arrow 1-- in FIG. r sectional view, Figure 5 is a partial sectional view taken along arrows ■-■ in Figure 2, Figures 6 and 7.
The figure is a perspective view showing the state in which the duplicate key duplicating machine is used.

As shown in FIGS. 1 to 3, a duplicate key duplicating machine 10 to which an embodiment of the present invention is applied includes a frame 12 having a substantially C-shaped side surface to which a die 11 serving as a lower mold is fixed, and a frame 12 having a substantially C-shaped side surface. 1
2, a guide member 1 integrally formed with the die 11;
3, a puncher 14 serving as an upper die attached via the guide member 13, and left and right support arms 1 attached to the frame 12 so as to be rotatable and movable in the radial direction.
5, a key holding means 16 rotatably attached to the tip of the support arm 15, and a height adjusting plate 17 attached to the frame 12. below,
These will be explained in detail.

The frame 12 is made of aluminum, zinc, etc., cast iron, or cast steel, and has a push handle 18 on the top.
is rotatably attached by a pin 19, and a guide member 13 in which a puncher 14 is slidably disposed is disposed. The pressing handle 18 is in contact with the upper end of the puncher 14, and the head of the puncher 14 has a circular cross section and a spring 20 is disposed inside to constantly urge the puncher 14 upward. I have to.

In this embodiment, the guide member 13 and the lower die 11 are integrally constructed so that the press cores are always aligned, but the guide member 13 and the lower die 11 may be separated. It is also possible to do so.

As shown in FIGS. 4 and 5, the puncher 14 has the following features:
The cut portion 21 has a cross section of 70 to 120 degrees (preferably approximately 85 degrees).
The guide member 13 has a short plane part C (which may have a circular arc shape with a large radius of curvature) 22 at the front thereof, and the guide member 13 is designed to prevent the puncher 14 having such a shape from rotating. A sliding hole 23 that can be moved up and down is formed.

As shown in FIGS. 1, 6, and 7, support arms 15 made of plates are attached to the frame 12 via pins 24 on both sides. The base end of the support arm 15 forms a long hole 25, and the support arm 15 is attached so that it can rotate and move back and forth in the radial direction.

A support shaft 26 is attached to the tip of the support arm 15, and a key holding means 16 is attached to the support shaft 26 so as to be rotatable and slidable in the lateral direction. The handle 3 is used to simultaneously tighten the fixing member 27, the upper plate 28 and lower plate 29 attached to the fixing member 27, and the upper plate 28 and the lower plate 29 to the fixing member 27.
0 and hooks 31 rotatably attached to both sides of the fixing member 27.

At the tip of the fixing member 27, there is a stepped portion 3 that becomes thinner vertically.
2.33 is formed so that either of the thinned parts on both sides of the original key 34 and the key base material 35 can be easily held, and the lower plate 29 has the above-mentioned tightening function. For tightening the handle 30, a female screw 37 is formed into which a male screw 36 is screwed, and a female screw 38 is formed on both left and right sides of the fixing member 27, and the upper plate 28 and the lower plate 29 are tightened. A guide rod 41 that loosely fits into guide holes 39 and 40 formed on both sides is screwed into the male thread 38. Note that the guide rod may be fixed to the fixing member by press fitting without using screws.

Further, the lower plate 29 is provided with a protrusion 43 that is pressed by an elastic body 42 (for example, a spring, weak rubber), and the tip of the protrusion 43 protrudes from the lower end of the lower plate 29. Note that this protrusion 43 is originally W! Don't use 34,
This is to engage a scale hole formed at a predetermined position on a code plate (not shown) used when manufacturing a duplicate key using a key code, so when duplicating a duplicate key from only the original key, the above protrusion is used. The body 43 is not needed, so it is removed. Note that 44 indicates a set screw, and 44a indicates an O-ring (which may be a spring) as an example of an elastic body.

Hooks 31 are rotatably provided on both sides of the fixing member 27 via a bottle 45 and a seat plate 46. Holding means 16
This is for adjusting the base 1134 and the key base material 35 in the left and right direction when the key base material 35 is attached to the key body.

The frame 12 is provided with pins 47 and 48 that protrude on both sides, so that the height adjustment plate 17 can be removably attached, and the plate that displays the key code described above can be attached to this part. It looks like this. And the frame 12 in the part where the support arm 15 is provided.
A rubber plate 49 is arranged on the top of the key holding means 16 so that the key holding means 16 can be placed thereon without causing any damage.

Therefore, when using this duplicate key duplicating machine 10, first rotate the key holding means 16 and place it on the rubber plate 49 as shown in FIG. Loosen the upper plate 28 and lower plate 29 attached to 27. Then, attach the main key 34 to the tip of the upper plate 2 and the fixing member 27, and then slightly tighten it by operating the handle 30, and apply the elastic force of the O-ring 44a located inside. The upper plate 28 and the fixing member 27 which becomes the middle plate are
, before tightening the lower plate 29 and the fixing member 27, clamp the base 134, and then attach the key base material 35\ to the tips of the lower plate 29 and the fixing member 27, corresponding to the base key 34. The above-mentioned tightening is performed by further tightening the handle 30 to clamp and fix the key base material 35 and the original key 34 to the key holding means 16. Adjust the key base material 35 in the front, back, left and right directions.

Then, the key holding means 16 is tilted forward as shown in FIG. 7 so that the key thread forming portion of the key base material 35 rests on the die 11. In this case, since the height (thickness) differs depending on the key, a height adjusting plate 17 of an appropriate thickness is used and placed on the upper end of the die 11 so that the blade portion of the key to be processed comes into contact with it.

After this, the puncher 1 is inserted into the key-shaped valley part of the original key 34.
4, and press the key holding means 16 sufficiently with one hand, press the pressing handle 18 with the other hand, and punch a key shape into the key base material 35 with the puncher 14. to form. Then, the process is repeated while moving the key holding means 16 laterally with respect to the rotation shaft 26. By forming joint molds on the key base material 35 that correspond to all the key threads provided in the key base material 34, the key threads can be attached to the key base material 3.
5, and copy the key thread on the other side using the same process. In this way, a duplicate key is manufactured.

In this embodiment, a gap is provided on both sides of the intermediate fixing member 27 to sandwich the original key 34 and the key base material 35. Therefore, for example, synthetic resin may be used for the relatively thick grip portion. It has the feature that even if it is a key, duplicate keys can be easily manufactured.

〔Effect of the invention〕

As is clear from the above explanation, the key duplication method according to the present invention forms individual key shapes on the key base material using a puncher and die using the original key as a reference, so it is easy to form a key pile. can.

Therefore, the structure of the apparatus to which the method of the present invention is applied is extremely simple.

[Brief explanation of the drawing]

FIG. 1 is a side view of a duplicate key duplicating machine to which an embodiment of the present invention is applied, FIGS. 2 and 3 are enlarged sectional views of the same parts, and FIG. 4 is a sectional view taken along arrow 1-1 in FIG. FIG. 5 is a partial cross-sectional view taken along arrows 1--2 in FIG. 2, and FIGS. 6 and 7 are perspective views showing the duplicating machine in use. [Explanation of symbols]

Claims (1)

[Claims] Using a columnar puncher with individual key shapes formed on the tip of the key, and a die paired with the puncher, the original key to be duplicated and the new key base material to be duplicated are lined up and fixed. Positioning the puncher with respect to the key base material by arranging the key thread forming part of the key base material between the puncher and the die and bringing the individual key shapes of the original key into contact with the tip of the puncher, and then positioning the puncher with respect to the key base material. The key shape of the original key is formed on the key base material by lowering the puncher, and all the key shapes on one side are formed on the key base material by sequentially moving the key base material and the original key laterally. key duplication method.