JPH09165956A - Lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock difficult to be released by a third person. SOLUTION: A key 3 has a plurality of irregular molding sections 3A, and an arbitrary release number can be set by detaching either of these irregular molding sections 3A. When the key 3, in which the release number is set, is inserted into a key hole 2A, each engaging pin 14 is engaged with each irregular molding section 3A. Consequently, when a sliding member 8 is pushed in deeply up to the place of release towards the right side and the key is released, the right end sections of engaging members 13 are engaged with annular grooves formed to each engaging pin 14. The notched sections 8c of the sliding member are separated from the engaging members 13 in the sliding member 8 returned to the left side by coil springs 11. When the sliding member 8 is pushed in up to the place of release towards the right, all notched sections 8c are interlinked with each engaging member 13, and the free end of a loop-shaped member 4B is sprung out from an inserting hole 2B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock, and more particularly to a lock suitable as a lock for bicycles.

[0002]

2. Description of the Related Art Conventionally, as a bicycle lock, a lock having the following structure is known. That is, a main body having a keyhole, a chain having one end fixed to the main body, and the other end having a free end removably inserted into an insertion hole formed in the main body, and a chain inserted into the keyhole of the main body. Locks with known keys are known.

[0003]

By the way, in the above-mentioned conventional lock, the key for unlocking is already specified when the user purchases the lock. Such a conventional lock has a drawback that it is often opened relatively easily by a third party. Therefore, there has conventionally been a demand for a lock that is difficult to be unlocked by a third party.
Further, from the standpoint of a lock manufacturing company, it is necessary for the above-described conventional general lock to manufacture different constituent members and different keys depending on the difference in the internal structure of the keyhole in the main body.
Therefore, the number of parts for manufacturing the lock increases,
There was a drawback that their management became complicated.

[0004]

[Means for Solving the Problems] In view of such circumstances,
The present invention has a loop-shaped member, one end of which is connected to a case and the other end of which is detachably fitted into an insertion hole provided in the case, and a concavo-convex molding portion capable of forming concavities and convexities at a plurality of predetermined locations. , The key to be inserted into the keyhole formed in the case and configured to be able to set an arbitrary unlocking number depending on which concave-convex shape part is formed with the concave-convex part A plurality of members configured to engage with the respective concave-convex shaped portions of the inserted key and to have different depths of engagement with the respective concave-convex shaped portions depending on whether the engaged concave-convex shaped portions have concaves and convexes. First engaging member, a first spring for urging each of the first engaging members toward the concave-convex shaped portion of the key inserted in the key hole, the case, and each of the first engaging members. A slide member that can be brought into and out of contact with the slide member And biased in a direction away from the engagement member, said second spring for the slide member is positioned in the normal position, the first with provided the same number as the first engagement member
A second engaging member that is disposed between the engaging member and the slide member and is engaged with and held by the engaging member and the slide member, and the other end of the loop-shaped member comes out of the insertion hole when the slide member is in the normal position. And a lock member that prevents the other end of the loop-shaped member from slipping out of the insertion hole when the slide member is pushed into the case against the second spring and is in the unlocked position. When the slide member is in the normal position before the unlocking number of the key is set, the second engagement member is weakly engaged with and held by the slide member in advance and is separated from the opposing first engagement member. When the slide member is pushed inward of the case to the unlocked position after the key having the unlocking number is inserted into the keyhole, the second engaging member is strongly engaged with the first engaging member. And the slide member is released And the second spring is positioned at the normal position by the second spring, the slide member is separated from the second engaging member, the second engaging member is held by the first engaging member, and the preset regular unlocking number is set. When a key different from the above is inserted and the first engaging member is moved to a position different from the regular position, the engagement between the second engaging member and the slide member becomes impossible and the slide member The present invention provides a lock that prevents the lock from being pushed to the unlocked position. Also, the second
The invention of (1) has a loop-shaped member, one end of which is connected to the case and the other end of which is detachably fitted into an insertion hole provided in the case, and a concavo-convex molding portion capable of forming concavities and convexities at a plurality of predetermined locations. , The key to be inserted into the keyhole formed in the case and configured to be able to set an arbitrary unlocking number depending on which concave-convex shape part is formed with the concave-convex part A plurality of members configured to engage with the respective concave-convex shaped portions of the inserted key and to have different depths of engagement with the respective concave-convex shaped portions depending on whether the engaged concave-convex shaped portions have concaves and convexes. First engaging member, a first spring for urging each of the first engaging members toward the concave-convex shaped portion of the key inserted in the key hole, and the case for contacting each of the first engaging members. The slide member provided so as to be separable, and the slide member And biased in a direction away from the engagement member, a second spring to position the slide member to the normal position, while being disposed by the same number and the first engagement member,
The slide member is movably mounted in the recess formed in one of the first engaging member and the slide member along the moving direction of the first engaging member, and the slide member is pushed inward of the case. When the locking position is reached, the convex portion formed on the other of the first engaging member and the slide member moves in the moving direction to move the mounting height in the concave portion. An engaging member,
When the slide member is in the normal position, the other end of the loop-shaped member is prevented from slipping out of the insertion hole, and when the slide member is pushed into the case against the second spring to reach the unlocked position, the loop-shaped member is looped. A lock member that allows the other end of the member to slip out of the insertion hole, and when the slide member is in the normal position before setting the unlocking number of the key, the second
The engaging member is located at the neutral position in the recess and is separated from the first engaging member or the slide member at the adjacent position, and the slide member is unlocked after the key having the unlocking number is inserted into the key hole. When pushed to the position, the second engaging member is moved in the moving direction by the convex portion to fix the mounting height in the concave portion, and a key different from the preset regular unlocking number is pressed. When the first engaging member is inserted and moved to a position different from the normal position, the second engaging member and the convex portion contact each other and the slide member is pushed into the unlocked position. It provides a blocking lock.

[0005]

According to the first aspect of the present invention, the purchaser of the lock can produce a key having an arbitrary unlocking number depending on which of the concave-convex forming portions of the key is to have the concave-convex shape. Then, after this, when the key is inserted into the key hole of the case and the slide member is pushed to the unlocked position, the second engaging member is strongly engaged with the first engaging member. At this time, the heights of the second engaging members engaged with all the first engaging members are supported at the same height. Then, after this, when the slide member is released, the slide member is positioned at the normal position by the second spring, so that the slide member is separated from the second engagement member, and the second engagement member is separated from the first engagement member. While being held by the coupling member, they are supported at the same height. In this state, the engagement position of the second engagement member with respect to the first engagement member is adjusted according to the unlocking number of the key. If the key is pulled outward from the keyhole from this state, the first spring biasing the first engaging member is compressed, so that the key can be removed from the keyhole without trouble. Then, after inserting the key into the keyhole again and pushing the slide member into the case, the slide member and the second engaging member can engage with each other, so that the slide member can be pushed to the unlocked position. As a result, the lock member allows the loop-shaped member to slip out, so that the end of the loop-shaped member can be taken out from the insertion hole. That is, it is unlocked. When a key having an unlocking number different from that of the regular key is inserted into the keyhole of the case and the slide portion is pushed inward, the height of the first engaging member in the case and The height of the held second engaging member is different from that when the regular key is inserted. Therefore, the unevenness of the slide portion that is pushed into the case cannot be engaged with the second engagement member, and the slide member cannot be pushed to the unlocked position. That is, it cannot be unlocked. Also in the second invention, by the same procedure as in the first invention,
A key with an arbitrary unlocking number can be manufactured, and the height at which the second engaging member in the case is attached can be determined accordingly. The subsequent operation of the key and the slide member is the same as in the case of the first invention. In this way, the purchaser of the lock can set an arbitrary unlocking number, so that it is possible to provide a lock that is less likely to be unlocked by a third party as compared with the related art. From the standpoint of a lock manufacturing company, it is sufficient to manufacture one set of components that make up the lock. Therefore, the number of parts is reduced as compared with the conventional one, and the management of the constituent parts of the lock is facilitated.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
1 to 3, the lock 1 of this embodiment will be described later.
The case 2 that contains the components that form
The key 3 that is detachably inserted into the keyhole 2A that is formed,
One end 4A is fixed to the case 2, and the free end 4B at the other end is fixed.
Loop-shaped part that is detachably fitted in the insertion hole 2B of the base 2.
The material 4 is provided. The key 3 of this embodiment is made of synthetic resin.
Manufactured as shown in FIG. 6 to FIG.
Is formed in the shape of an elongated plate. In the longitudinal direction of the key 3
Is a total of 9 uneven parts 3A arranged in a staggered pattern.
Has formed. Each concavo-convex molded part 3A has four thin bricks.
3a and one of them are integrally connected to each other, and
The square pillar-shaped connecting portion 3b located at the center and the adjacent bridges
And a triangular space 3c formed between the
ing. In addition, in this embodiment, each concave-convex molded portion 3A has
Open each of the four bridges 3a around the main body portion 3B
And separate the connecting portion 3b and each bridge 3a into a book.
It can be cut off from the body part 3B
You. By cutting off in such a manner,
Square through holes can be formed at the positions (see FIG. 12).
reference). As will be described later in detail, in this embodiment, the lock 1 is purchased.
And then any position on the concave / convex shaped portion 3A of the key 3
Depending on whether or not to cut off to form a square through hole.
Now you can make your own original key
According to the position of the components inside the case 2
The position can be adjusted. For each uneven molding part 3A
The state before the bridge 3a and the connecting portion 3b are cut off
In the state, as shown in FIG. 7, the connecting portion 3 of the concavo-convex shaped portion 3A is formed.
The height of the upper surface of b is the height of the upper surface of the main body portion 3B of the key 3.
Is the same as In addition, on the body part 3B of the key 3,
The concavo-convex shaped portions 3A on both sides in the longitudinal direction have irregularities.
The side close to the molding part 3A was inclined so that the height became low.
The guide surface is 3d. In the body part 3B of the key 3
The leading end 3e has a wedge-shaped cross section, and
A through hole for passing a string or the like at the other end of the body portion 3B
3f is drilled. Then, as shown in FIG. 1, the key
When 3 is inserted all the way into the keyhole 2A in Case 2
The end portion provided with the through hole 3f is slightly
It is designed to project outward. Next, FIG.
As shown in Fig. 5, the case 2 is formed in a rectangular box shape.
As described above, one end 4A of the loop-shaped member 4 is
While fixed to one side in the longitudinal direction of the space 4, looped
The free end 4B of the member 4 can be freely attached to and detached from the insertion hole 4a of the case 4.
To fit. As the loop-shaped member 4,
Wires and chains can be used, and as a whole
-Shaped, iron bar or iron pie whose free end can be bent
It may be As shown in FIG. 1 and FIG.
The free end 4B of the loop-shaped member 4 is made of a substantially cylindrical steel material.
The leading edge of the small diameter portion 4a and the cone portion 4b on the rear side thereof.
And the medium diameter portion 4c formed on the rear side of the conical portion 4b and
And a large-diameter portion 4d on the rear side of the
An annular groove 4e is formed at the boundary between the large diameter portion 4d and the large diameter portion 4c.
Is formed. The tip of the small-diameter portion 4a is located on the key 3.
Approximately + shaped concave portion according to the shape of each concave-convex shaped portion 3A
4f is formed. And shown in FIGS.
As described above, the tip of the free end 4B of the loop-shaped member 4 described above.
The (small diameter portion 4a) is replaced by
The ridge 3a, the connecting portion 3b, and the space portion 3c from above
Engage and then in that state, as shown in FIG.
Rotate the free end 4B of the loop-shaped member 4 with respect to the key 3.
Let In this way, the bridging in the unevenness forming portion 3A is performed.
The connector 3a and the connecting portion 3b are cut off from the main body portion 3B.
I'm trying. Therefore, the bridge 3a and
And the concavo-convex shaped portion 3A after the connecting portion 3b is cut off,
Square through holes are formed (see FIG. 12).
Concavo-convex shaped portion 3A at the right end of the reference). Next, as shown in FIG.
In addition, the case 4 has an L-shape at a position adjacent to the insertion hole 2B.
The lock member 5 is attached so as to be swingable by the pin 6.
There is a straight line on the side of the insertion hole 2B in the lock member 5.
A locking portion 5a is provided so as to project from the tip of the portion. To lock member 5
In the other straight part of the
One end of the spring 7 is connected. The other end of the coil spring 7
It is not connected to anywhere and the insertion hole 2B of the case 4 is
And is facing. Therefore, the free end of the loop-shaped member 4
When 4B is fitted into the insertion hole 2B, the loop-shaped member 4
The tip of the free end 4B (small diameter portion 4a) is inside the coil spring 7.
The boundary between the small diameter portion 4a and the conical portion 4b after being inserted into the partial space
The end surface of the stepped portion, which is the boundary, contacts the free end of the coil spring 7,
The coil spring 7 is compressed. Also, along with this, a large diameter
To the position where the step end surface of the portion 4d abuts the side wall of the case 4
When the free end 4B of the loop-shaped member 4 is fitted, the lock portion
The entire material 5 is swung clockwise, and the locking portion 5a is looped.
It engages with the groove 4e. As a result, the loop-shaped member 4
To prevent the free end 4B from coming out of the insertion hole 2B
It has become. In other words, this state is locked
You. Furthermore, at the tip of the other linear portion of the lock member 5,
A semi-circular engagement convex portion 5b is formed. This engaging projection 5
b is opposed to an engaging recess 8a of the slide member 8 described later.
Inside the case 2 where the slide member 8 is in the unlocked position
Of the slide member 8 when it is pushed all the way in.
The mating concave portion 8a contacts the engaging convex portion 5b of the lock member 5,
The lock member 5 is rotated counterclockwise. By that
The locking portion 5a of the lock member 5 is an annular shape of the loop-shaped member 4.
Since it is detached from the groove 4e, the elastic force of the coil spring 7
The free end 4B of the loop member 4 from the insertion hole 2B to the case
4 is pushed out. That is, the loop-shaped member 4 itself
So that the end 4B is pushed out of the case 2 and unlocked
Has become. Next, the slide member 8 will be described.
And, as shown in FIG. 4 and FIG.
An elongated opening 2C is formed on the side wall on one side.
One side of the slide member 8 of the case 4 is inserted through the opening 2C.
It is projected outward. The slide member 8 is made of synthetic resin
When viewed in the plan view shown in FIGS. 4 and 13,
Left side exposed from the case 4
The side portion on the side is a flat surface. Of the bottom of the slide member 8
A substantially rectangular recess 8A is formed in the region on the left side.
This recess 8A is a plate-shaped striker that is erected inside the case 4.
It covers the lid part 2D. And is located within the recess 8A.
A stopper portion 2D and a wall portion of the concave portion 8A facing the stopper portion 2D.
A pair of coil springs 11 are mounted over the entire area. this
As a result, the slide member 8 projects toward the outside of the case 4.
It is always urged in the direction of exit. The recess 8A is
It is supported by the upper end of the upper part 2D, and
The upper surface of the id member 8 is in sliding contact with the edge of the opening 2C of the case 2.
I try to make it. As a result, in Case 4
Keep the mounting height of the slide member 8 in place
I am trying to. Therefore, the slide member 8 is
When moving in the left-right direction of Fig. 4 with respect to the space 4,
The id member 8 is provided on the upper end of the stopper portion 2D and the case 2.
The sliding contact is made with the edge of the opening 2C. FIG.
As shown in FIG. 13 and FIG.
There are three locations on the straight line in the longitudinal direction at the predetermined positions on the upper surface
Is provided with a stopper 8b. These stoppers 8b
As shown in Fig. 14, in the natural state,
So as to project upward from the upper surface of the slide member 8.
ing. However, as shown by the phantom line in FIG.
In the present embodiment, when the lock 1 is put on the market, that is, the key 3
In the state before setting the unlocking number, the concave portion 8 of the slide member 8 is
Between the wall surface of A and the side wall of the case 4 facing it, the space between
The sensor 12 is made to bite. This allows
The slide member 8 is, as shown in FIGS.
The inner wall surface of the concave portion 8A comes into contact with the stopper portion 2D.
Is also maintained in a position projecting outward. At this time, the above
The stopper 8b of the slide member 8 that has been opened is the opening of the case 2.
It is in a state of coming into contact with the edge of the portion 2C and retracting. Up
As described above, the slide member 8 engages with the lock member 5.
A semi-circular engagement concave portion 8a is formed at a position facing the convex portion 5b.
The lock member 5 is engaged when the lock 1 is put on the market.
The convex portion 5b and the engaging concave portion 8a of the slide member 8 are separated from each other.
You. Furthermore, a slide that is always stored in the case 4
On the right side of the member 8, at predetermined longitudinal intervals,
Nine protruding portions 8B are formed. These protrusions 8
Of B, those at both ends in the longitudinal direction of the slide member 8 and
And every other one of them has the same protruding amount of the protruding portion 8B.
Has a small protruding amount of
All the protrusions 8B have the same protrusion amount and a large protrusion amount.
I have. In addition, the height direction at the tip of each of these protruding portions 8B
A notch 8c of the same size is formed at the central position
doing. Then, in each of these notches 8c,
The engaging member 13 is engaged. Figure 15
As shown in FIG. 16, the engaging member 13 is on the left side of the drawing.
The end 13a located on one side is formed into a cylindrical shape,
Notch portion 8c formed in the protruding portion 8B of the slide member 8
It can be engaged weakly with. In this example, the lock
1 is commercially available, as shown in FIG.
8 to the cutout portions 8c of the end 8 of the engaging member 13 respectively.
a is engaged and held. On the other hand, the engaging member 1
The tip 13b of 3 is formed in a C-shaped flat plate shape. Above
As described above, the end 13a of the engaging member 13 is attached to the slide member 8
In the state of being engaged with each notch 8c of
The tip 13b of the letter-shaped engaging member 13 is located above and below the case 2.
It is supported parallel to both sides and the tip of each protruding part 8B
Only the tip 13b of the engaging member 13 is projected from the
(See FIG. 5). As shown in Figs. 4 and 5,
On the extension of the tip 13b of each engaging member 13 in the space 4.
And each concave and convex portion of the key 3 inserted in the case 4
A total of nine engaging pins 1 are provided at the positions facing the molding portion 3A.
4 are arranged. These engagement pins 14 are
Each coil spring 15 mounted elastically over the end and the case 4
Is always urged downward. In FIG.
As also shown, each engagement pin 14 is a generally cylindrical shape as a whole.
It is formed in the shape of a cone, and its tip 14a is sharpened in a conical shape.
ing. Further, the outer peripheral portion of each engagement pin 14 in the axial direction
At the predetermined positions of the annular grooves 14b, 1 having the same size,
4c. The widths of the annular grooves 14b and 14c are
The same dimension as the thickness of the C-shaped tip 13b of the compound member 13
Is set to the bottom of the annular grooves 14b and 14c.
The outer diameter is the same as the inner diameter of the C-shaped tip of the engaging member 13.
The dimensions are set. Therefore, each C-shaped engagement
The tip 13b of the member 13 is at any one of the engaging pins 14.
It is possible to strongly engage with the annular grooves 14b and 14c of
ing. As described above, each engagement pin 14 is a coil spring.
Since it is always energized by 15, the keyhole 2A
When the key 3 is not inserted in the base 2,
The tip of the pin 14 is placed on the lower surface of the case 2 facing it.
It comes into contact. On the other hand, is it keyhole 2A?
When the key 3 is inserted into the case 2 from the
The tip portion 14a of the pin 14 is formed with each concave and convex portion on the key 3.
Contacting the connecting portion 3b of the portion 3A, or connecting portion 3b
Of the concave-convex molded portion 3A after cutting off the bridge 3a
It is designed to fit into a square through hole. Paraphrase
And unlocking in which all concave and convex molding parts 3A are not cut off
When the key 3 before setting the number is inserted into the keyhole 2A
All the engaging pins 14 are the connecting portions 3 of the concave-convex shaped portion 3A.
Abut on b and all are kept at the same height in case 2.
(Fig. 5). On the other hand, one of the uneven molding parts 3A
And the connecting portion 3b is cut off to form a square through hole.
The formed key 3 (key after setting the unlocking number) is key 3
When the key is inserted into the keyhole 2A, the connecting part 3b etc.
It fits into the concave-convex molded part 3A that is released into a square through hole.
The mating engagement pin 14 and the connecting portion 3b are cut off.
With the engaging pin 14 that is in contact with the concave-convex shaped portion 3A,
The heights in case 2 are different (Fig. 18). Soshi
Thus, in the present embodiment, each engagement pin in the case 2 is
Not only if all 14 are kept at the same height,
Annular groove of each engaging pin 14 even when maintained at
Either 14b or 14c of the above-mentioned engaging members 13
The height is the same as that of the tip 13b. This
When the slide member 8 is pushed into the case 2,
The tip 13b of each engaging member 13 is an annular groove of each engaging pin 14.
It is adapted to engage with either 14b or 14c,
The position where they are completely engaged is the deepest position in the slide member 8.
It has been moved to the unlocked position. Sly like this
When the drive member 8 is pushed to the unlocked position, it is shown in FIG.
The engaging concave portion 8a abuts on the engaging convex portion 5b of the lock member 5b.
The lock member 5b is swung, the loop member 4
The free end 4B is pushed out from the insertion hole 2B and unlocked.
Swelling. In addition, put the key 3 into the keyhole 2A of the case 2.
In the inserted state, the tip of each engaging pin 14 is placed on the key 3.
Since it abuts, the key 3 remains in the keyhole 2A as it is.
Is held. On the other hand, pull the key 3 toward the outside.
When tensioned, the coil spring 15 that biases each engagement pin 14
Since it is compressed a little, the tip of each engaging pin 14 and the key
The main body portion 3B of 3 and the concave-convex shaped portion 3A slide, and
-3 can be smoothly removed from the keyhole 2A of the case 2.
Wear. (Explanation of Operation) The lock 1 of the present embodiment configured as described above is
The appearance is such that it is commercially available in the state shown in FIG.
You. That is, the spacer 12 shown in FIG.
Between the engaging recessed portion 8a and the side wall of the case 2 facing it.
Are fitted in between, and as shown in FIG.
The ride member 8 is the key 3 protruding most outwardly from the case 2.
It is in the position before setting the unlocking number. In this state,
The notch portion 8c of the guide member 8 is provided with the engaging member 13
The end 13a is engaged (FIGS. 4-5). Each person in charge
The tip 13a of the mating member 13 is separated from each engagement pin 14.
However, the height of the annular groove 14b on the tip side of each engaging pin 14 is
It is maintained at the same height as. This time, slide
The engaging concave portion 8a of the member 8 is the engaging convex portion 5b of the lock member 5.
Away from the free end 4B of the loop-shaped member 4 is inserted
It is extracted from the hole 2B. Also, as shown in FIG.
In addition, the bridge 3 of all concave and convex parts 3A
The a and the connecting portion 3b are not cut off. And
The key 3 in this state is the keyhole 2 as shown in FIG. 1 and FIG.
It is inserted into the case 2 from A. Therefore,
The key 3 is provided at the tip 14a of each engagement pin 14 in the slot 2.
Contacting the connecting portion 3b of each concave-convex shaped portion 3A,
All of them are kept at the same height in the source 2 (Fig. 5).
Here, after purchasing the lock 1 in the above-described state, the purchase of the lock 1
The entrant controls the key 3 of any unlocking number that suits his or her preference.
If you want to make it, first remove the key 3 from the case 2.
Pull toward the side and pull out from the keyhole 2A. Then lock
The purchaser of 1 uses the key 3 as shown in FIG. 12, for example.
The origin that cuts off the unevenness forming part 3A on the most tip side in the
Suppose you want to make Naru's Key 3. In this case
Is the loop-shaped member 4 as shown in FIGS.
The free end 4B (small diameter portion 4a) is set to the most tip of the key 3.
To the connecting portion 3b and the bridge 3a of the uneven portion 3A
Engage and then press the free end 4B of the loop-shaped member 4
-Rotate with respect to 3. This will connect the position
The part 3b and the bridge 3a are cut off and square
Shaped through holes are formed (FIG. 12). This allows you to buy
The key 3 with an unlocking number was manufactured according to the preference of the user.
become. In addition, according to the purchaser's preference, the uneven molding portion 3A
Needless to say, the number of cut-off points may be plural.
You. Next, match the key 3 with the unlocking number set in this way.
Then, the position of the engaging member 13 in the case 2 is adjusted. One
Then, first, the free end 4B of the loop-shaped member 4 is closed.
The insert 2 is inserted into the case 2 through the insertion hole 2B (FIG. 4).
As a result, the free end 4B of the loop-shaped member 4 becomes the lock member.
The coil spring 7 on the 5th side is contacted and the coil spring 7 is pressed.
The lock member 5 is slightly retracted in the clockwise direction.
Is rotated. Therefore, the locking portion 5a has the loop-shaped member 4
Engage with the annular groove 4e. This allows the loop-shaped member
The free end 4B of 4 is prevented from coming out of the insertion hole 2B.
You. That is, it is locked. In this state, as shown in FIG.
As shown in FIG.
The slide member 8 is separated from the engaging recess 8a.
Then, the key 3 is inserted into the keyhole 2A again. Beyond key 3
The edge has a wedge-shaped cross section, and each concave and convex shape part
Since the guide surface 3d is formed at a position adjacent to 3A,
There is a through-hole due to the cut-out of the above-mentioned concavo-convex molded part 3A.
Despite the presence, the tips 14a of the engagement pins 14 are not
-Sliding with the upper surface of the main body portion 3B of 3 and the concave-convex shaped portion 3A
Then, insert the key 3 smoothly to the innermost position shown in Fig. 4.
Is entered. As a result, unevenness with square through holes
The engaging pin 14 at a position corresponding to the molding portion 3A has a tip end thereof.
Part is fitted into the square through hole of the concave-convex shaped part 3A, while
The remaining engagement pins 14 are used to connect the other concavo-convex shaped portions 3A.
It contacts the portion 3b (the state shown in FIG. 18). In this state
Is an engagement pin engaged with the concave-convex shaped portion 3A having a through hole.
Only 14 has a lower height, and the other engaging pins 14 have
The height is maintained higher than that. Where the penetration
After the engagement pin 14 that engages with the concave-convex shaped portion 3A having a hole
The height of the annular groove 14c on one side (upper side) and the other
Of the annular groove 14b on the tip side (lower side) of the dowel pin 14
The heights are the same, and their adjacent positions
The heights of the tips 13b of the engaging members 13 are the same.
It is high. From this state, the slide member 8
After removing the spacer 12 from the portion 8A, the slide member
Push 8 toward the inside of Case 2. At this time,
The engaging member 13 engaged with the id member 8 is shown in FIG.
As shown, the tip 13b has an annular groove for each engaging pin 14.
It is at the same height as 14b and 14c and can be engaged.
To the unlocked position where they fully engage each other.
Push the ride member 8 inward with respect to the case 2.
(Figs. 19 and 21). In case 2 like this
Move the slide member 8 to the unlocked position where it is pushed all the way in.
When the slide member 8 is placed,
When the pa 8b projects, the tip of the engaging member 13 is completely
13b engages with the annular grooves 14b and 14c of the engaging pin 14.
It will be in the state (FIG. 21). As a result, as shown in FIG.
The engaging concave portion 8a of the slide member 8 is the convex engaging portion of the lock member 5.
The lock member 5 is rotated counterclockwise by engaging with the portion 5b.
Therefore, the locking portion 5a of the lock member 5 is
It separates from the annular groove 4e. Therefore, the coil spring 7
Due to the elastic force, the free end 4B of the loop-shaped member 4 is inserted into the insertion hole.
2B is pushed out of the case 2. In other words,
Push in the slide member 8 as described above to form a loop.
The free end 4B of the member 4 is projected from the insertion hole 2B.
Therefore, it is possible that the slide member 8 is in the unlocked position.
And the tip 13b of the engaging member 13 is an annular groove of each engaging pin 14.
You can confirm that it has been completely engaged with 14b and 14c.
It has become. After this, the slide member 8 was pushed
When the hand is released, the spring force of the coil spring 11 causes
The ride member 8 is pushed back toward the outside of the case 2.
Then, the stopper 8b comes into contact with the side wall of the case 2.
It stops at the normal position (Fig. 22). Also like this
The slide member 8 is pushed back toward the outside.
The end 13a of each engaging member 13 is cut by the slide member 8.
It separates from the notch 8c. Therefore, the engaging member 13
Has a tip 13b of which the annular grooves 14b, 1 of the engaging pin 14 are
4c remains engaged and its end 13a is slid.
Is separated from the member 8 and supported in the case 2 at the adjacent position.
It will be held (Fig. 22). By this, the unlocking number
Of the components inside the case 2 according to the key 3 with the number
Position adjustment is completed. Therefore, after this, key 3
After pulling out from the hole 2A, the free end 4B of the loop-shaped member 4
Is inserted into the insertion hole 2B. Thereby, the lock member 5
The locking portion 5a engages with the annular groove 4e of the loop-shaped member 4,
The free end 4B of the loop-shaped member 4 comes out of the insertion hole 2B.
It is locked and locked 1. Next, unlock from this state
When doing 1, insert the key 3 all the way into the keyhole 2A.
After that, push the slide member 8 toward the inside of the case 2.
No. When the key 3 is inserted all the way into the keyhole 2A, each engagement
The ends 13a of the pins 14 are to be supported at the same height.
19 (state of FIG. 19), the end 13a of each engagement pin 14
And each notch of the slide member 8 located adjacent to and adjacent to them
The mating part 8c can be fitted to each other at the same height.
I have. Therefore, from this state, the slide member 8
When pushed inward of the case 2, the slide member 8
The end 13a of each engaging pin 14 engages with each notch 8c.
Then, open the slide member 8 at the innermost position in the case 2.
It can be pushed to the lock position (Fig. 21). With this
The engaging recess 8 a of the slide member 8 is
The locking member 5 is engaged in the engaging convex portion 5b, and the lock member 5 is rotated counterclockwise.
Since it is swung, it is locked from the annular groove 4e of the loop-shaped member 4.
The part 5a separates. Therefore, the freedom of the loop-shaped member 4
The end 4B is pushed out from the insertion hole 2B of the case 2 to unlock 1
Is done. By the way, as mentioned above
However, at this point, the cut-off position of the uneven
Insert key 3 (key with different unlock number) into keyhole 2B to unlock
1 to slide the slide member 8 to the unlocked position described above.
I can't push it all the way. Because the unlocking number
If you try to unlock 1 using different key 3, key 3
Engagement pin in case 2 when inserted into hole 2B
All the engaging members 13 engaged with 14 are at the same height.
This is because it will not be supported (for example, the state shown in FIG. 20).
state). In this state, the ends of the engaging members 13 having different heights
13a contacts the tip surface of the protruding portion 8B of the slide member 8
The ends 13a of all the engaging members 13 are adjacent to each other.
Can be engaged with the cutout portion 8c of the slide member 8
Because you can't. As described above, according to this embodiment,
For example, the purchaser of the lock 1 needs to press the key 3 of the unlocking number according to his preference.
Can be manufactured. Therefore, compared to the conventional
It is possible to provide the lock 1 that is difficult to be unlocked by a third party.
Wear. Also, attach multiple keys 3 to the lock 1 as accessories.
If you sell it on the market, you can use the procedure described above.
Easy to use multiple spare keys 3 to match the original key 3
Can be manufactured. In addition, the tablet 1 of the present example was manufactured.
From the perspective of the manufacturing company that manufactures the
Since it is sufficient to manufacture parts for
The number of parts for manufacturing the lock 1 can be reduced
You. Therefore, compared to the conventional, management of the components of the lock 1
Becomes extremely easy. In the first embodiment, the city
In the state of sale, as shown in FIG.
Although the spacer 12 is fitted to the portion 8A, the spacer 1
2 without using the slide member 8 shown in FIG.
The stopper 8b is in contact with the side wall of the case 2.
You may put it on the market. (Second Embodiment) Next, FIGS. 23 to 25 show the second embodiment of the present invention.
2 shows an example. In this second embodiment,
When the shapes of the dowel pin 14 and the engaging member 13 are changed,
Accordingly, the notch 8c of the slide member 8 side
The shape has been changed. That is, the engagement pin 14 is
The annular groove on the outer peripheral part shown in the example is omitted.
A convex portion 14a that radially protrudes at a predetermined position in the axial direction
Is formed. The tip of the convex portion 14a is located at the vertical position.
The corner is greatly chamfered to make it sharp. And this
In the engaging pin 14 configured as described above, the convex portion 14a is slid.
The notch portion 8c of the id member 8 and the engagement attached thereto
It faces the member 13. On the other hand, this embodiment
As shown in FIG. 25, the engaging member 13 of is a flat cube.
From the body portion 13a having a shape and the body portion 13a
It is composed of a convex portion 13b that continuously protrudes to the side.
ing. The tip of this convex portion 13b has large upper and lower corners.
Sharply chamfered. In this embodiment,
The notch portion 8c of the slide portion 8 material is provided on the engaging member 13 described above.
The body portion 13 of the engaging member 13 has a combined shape.
A can be stored and held. And off
The main body portion 13a of the engaging member 13 is a cutout portion in the cutout portion 8c.
8c, the protrusion 13b of the engaging member 13 is cut off.
It projects from the notch 8c and faces the engaging pin 14 at the adjacent position.
It is supposed to. Therefore, in this second embodiment
The engaging member 13 is not separated from the cutout 8c.
Instead, it is always held in the notch 8c.
You. The other structure is the same as that of the first embodiment described above.
In the second embodiment configured as described above, the lock 1 is commercially available.
23, the engaging member 13 is
Positioned in the neutral position, which is the height of the center in the notch 8c
And at this time, the engagement pin 14 is
Separate from the notch portion 8c of the ride member 8 and the engaging member 13.
Separated. Here, as in the first embodiment described above, the unlocking is performed.
After setting the number, insert the key 3 into the keyhole 2A of the case 2.
Then, push the slide member 8 toward the inside of the case 2.
Pour in. Along with this, the protrusions 13b of the engaging members 13
The convex portion 14a of the engaging pin 14 is engaged with and overlaps.
As a result, the protrusion 14 of the engaging pin 14
The a is fitted in the cutout portion 8c. This allows the notch
The engaging member 13 located at the neutral position in the recess 8c has a notch.
8c is moved to the upper or lower end and the height
Be held in place. That is, the height in the cutout portion 8c
The position is fixed (FIG. 24). Here, in FIG.
As shown on the left side,
The engagement pin 14 in the cut-off position has a key at its tip.
3 is engaged with the through hole formed in the concave-convex shaped portion 3A
Is getting pulled. On the other hand, shown on the right side in FIG.
As shown in FIG.
The height of the dowel pin 14 is high. Therefore, unevenness
The shaped portion 3A engages with the left side engagement pin 14 which is cut off.
The engaging member 13 moves to the upper end of the notch 8c.
Then, the height is fixed at that position.
The engaging pin in the notch 8c adjacent to and below it.
A concave portion with which the convex portion 14a of the ring 14 is engaged is formed. other
On the right side, the concave-convex shaped portion 3A is not cut off
Since the pin 14 has a high height, the protrusion 14
When a is engaged with the convex portion 13b of the engaging member 13, it is engaged with it.
The engaged engaging member 13 moves to the lower end of the notch 8c.
Will be done. Accordingly, the convex portion of the engaging member 13
An engaging pin is provided in a notch portion 8c which is a lower position adjacent to 13b.
A concave portion with which the convex portion 14a of 14 is engaged is formed. This
The slide member 8 to the position before unlocking shown in FIG.
By moving it, it engages with the convex portion 14a of the engaging pin 14.
The protrusions 13b of the mating member 13 are engaged with each other to form the cutouts 8c.
When the height position of the engaging member 13 in the inside is determined,
The protrusion 14a of the engaging pin 14 can be engaged with the adjacent position.
Active recesses are formed. Also this
When the slide member 8 is moved to the unlocked position,
As in the case of the first embodiment, from the insertion hole 2B of the case 2
The free end 4B of the loop-shaped member 4 is extruded. It
Then, the position adjustment of the engaging member 13 is completed according to the key 3.
You can check what you have done. After this, slide part
When the material 8 is released, the sly pressed by the coil spring 11 is released.
The stopper 8b of the door member 8 contacts the side wall of the case 2.
Return to the normal position. In this state, the engaging member 1
3 and the engaging pin 14 are separated from each other, and the engaging pin 14 is
It is also separated from the cutout portion 8c of the slide member 8. This
The operation for locking and unlocking after
This is the same as the first embodiment described above. Such a second embodiment
Even with the above configuration, the same operational effect as that of the first embodiment described above is obtained.
Fruit can be obtained.

[0007]

As described above, according to the present invention, it is possible to provide a lock which is hard to be unlocked by a third party. In addition, the effect of facilitating the management of the constituent parts of the lock is obtained as compared with the related art.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a right side view of a main part of FIG.

FIG. 3 is a bottom view of the main part of FIG.

FIG. 4 is a plan view in which the upper surface of the case is removed in FIG.

FIG. 5 is a sectional view taken along the line VV in FIG. 4;

FIG. 6 is a plan view of the key shown in FIG.

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6;

8 is a left side view of the main part shown in FIG.

FIG. 9 is a diagram showing a work process when the concave-convex shaped portion is cut off from the key.

FIG. 10 is a diagram showing a work process when the concave-convex shaped portion is cut off from the key.

FIG. 11 is a plan view of FIG. 10;

FIG. 12 is a plan view showing a key after an unlocking number has been set by cutting off one of the concavo-convex molding portions.

13 is a plan view of the main part shown in FIG.

14 is a front view of FIG.

FIG. 15 is a plan view of the main part shown in FIG.

16 is a front view of FIG.

17 is a front view of the main part shown in FIG.

FIG. 18 is a cross-sectional view showing a state in which the main parts shown in FIG. 5 are at different positions.

FIG. 19 is a diagram showing a positional relationship between an engaging member, an engaging pin, and a cutout portion when a regular key is inserted into a key hole.

FIG. 20 is a diagram showing a positional relationship between an engaging member, an engaging pin, and a notch when a non-genuine key is inserted into a key hole.

FIG. 21 is a cross-sectional view showing a state when the slide member is pushed to the unlock position.

FIG. 22 is a cross-sectional view showing a state when the slide member is located at the normal position.

FIG. 23 is a sectional view showing a second embodiment of the present invention.

FIG. 24 is a sectional view showing a state where the members shown in FIG. 23 have different positional relationships.

FIG. 25 is a perspective view of the main part shown in FIG.

[Explanation of symbols]

1 tablet 2 case 2
A keyhole 2B insertion hole 3 key
3A Concavo-convex forming part 4 Loop member 5 Lock member
8 slide member 13 engaging member (second engaging member) 14 engaging pin (first engaging member) 11 coil spring (second spring) 15 coil spring (first spring)

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kazuharu Seki 2-14-2 Kamata, Setagaya-ku, Tokyo

Claims (4)

[Claims] 1. A loop-shaped member, one end of which is connected to a case and the other end of which is detachably fitted into an insertion hole provided in the case, and a concavo-convex molding portion capable of forming concavities and convexities at a plurality of predetermined locations. The key to be inserted into the keyhole formed in the case and the keyhole that is configured so that an arbitrary unlocking number can be set depending on which concave-convex shape part is formed with the concave-convex shape and the keyhole. It is configured such that the depth of engagement with each concavo-convex shaped portion of the key inserted in the A plurality of first engaging members; a first spring that biases each of the first engaging members toward a concave-convex shaped portion of a key inserted into a key hole; A slide member that can be brought into and out of contact with each other, and this slide member A second spring that urges the slide member to a normal position by urging it in a direction away from the first engagement member, and the same number as the first engagement member and the first engagement member and the slide member. And a second engaging member that is disposed between and engaged with and held by them and the other end of the loop-shaped member that prevents the other end of the loop-shaped member from slipping out from the insertion hole when the slide member is in the normal position. A lock member that allows the other end of the loop-shaped member to come out of the insertion hole when the lock member is pushed into the case against the second spring to reach the unlock position, and the unlock number of the key is set. When the slide member is in the normal position before, the second engagement member is weakly engaged with and held by the slide member in advance and is separated from the opposing first engagement member, and the unlocking number is set. Above after the key is inserted into the keyhole When the ride member is pushed inward of the case to the unlocked position, the second engagement member is strongly engaged with the first engagement member, and the slide member is released so that the second spring normally operates. When in the position, the slide member is separated from the second engaging member, the second engaging member is held by the first engaging member, and a key different from a preset regular unlocking number is inserted. When the first engaging member is moved to a position different from the regular position, the engagement between the second engaging member and the slide member becomes impossible, and the slide member is pushed to the unlocked position. A lock characterized by blocking. 2. The one end side of the second engaging member is formed in a cylindrical shape, while the other end side of the second engaging member is formed in a substantially C shape, and the slide member is formed in a circular shape. A plurality of notches that can be engaged with one end of the columnar second engaging member are formed, and further, two notches at predetermined positions in the longitudinal direction of the first engaging member are formed.
An annular groove that is engageable with one end of the second engagement member having a substantially C shape is formed at the location, and the depth of the first engagement member engaged with the concave-convex shaped portion of the key is different. Accordingly, one end of each of the second engaging members having the substantially C shape is adapted to be engaged with one of the annular grooves on the first engaging member side. The lock described in. 3. A loop-shaped member, one end of which is connected to a case and the other end of which is removably fitted into an insertion hole provided in the case, and a concavo-convex molding portion capable of forming concavities and convexities at a plurality of predetermined locations. The key to be inserted into the keyhole formed in the case and the keyhole that is configured so that an arbitrary unlocking number can be set depending on which concave-convex shape part is formed with the concave-convex shape and the keyhole. It is configured such that the depth of engagement with each concavo-convex shaped portion of the key inserted in the A plurality of first engaging members; a first spring that biases each of the first engaging members toward a concave-convex shaped portion of a key inserted into a key hole;
A slide member that can be brought into and out of contact with the engagement member; a second spring that biases the slide member away from the first engagement members to position the slide member at a normal position; As many as the first engaging members are arranged,
The slide member is movably mounted in the recess formed in one of the first engaging member and the slide member along the moving direction of the first engaging member, and the slide member is pushed inward of the case. When the locking position is reached, the convex portion formed on the other of the first engaging member and the slide member moves in the moving direction to move the mounting height in the concave portion. An engaging member,
When the slide member is in the normal position, the other end of the loop-shaped member is prevented from slipping out of the insertion hole, and when the slide member is pushed into the case against the second spring to reach the unlocked position, the loop-shaped member is looped. A second locking member that allows the other end of the member to slip out of the insertion hole, and when the slide member is in the normal position before setting the unlocking number of the key, the second engaging member is in the neutral position in the recess. When the slide member is pushed to the unlocked position after the key having the unlocking number is inserted into the keyhole, the protrusion is separated from the first engaging member or the slide member at the adjacent position. The second engaging member is moved in the moving direction by the above to determine the mounting height in the recess, and a key different from the preset regular unlocking number is inserted to insert the first engaging portion. Is moved to a position different from the regular position, the second engaging member and the convex portion come into contact with each other to prevent the slide member from being pushed to the unlocked position. . 4. The concavo-convex molded portion of the key has a through hole formed by cutting off the portion, and the tip end portion of the loop-shaped member fitted into the insertion hole of the case. The lock according to any one of claims 1 to 3, wherein an engaging portion for engaging with the concave-convex shaped portion of the key and cutting it off is formed on the lock.