GB2148379A - Combination lock - Google Patents

Abstract

A combination lock, comprises a lock body housing a lock mechanism comprising a first member 6 having a plurality of keyways and one or more grooves 61, 62 providing at least one passageway, a movable second member 7, having a plurality of elements 71, 72 for location in the or each passageway means for controlling the movable second member 7, a plurality of movable keys comprising a button portion 2 accessible outside the housing for operating the key and a hidden portion A located in a keyway, the hidden portion having one or more blocking elements A1, A2, disposed so that in one position of the portion A, the or each passageway is blocked against elements 71, 72 and in an alternative position of the portion A, the passageway is unblocked, a detaining member 8 for retaining the keys in one position and means 3 for releasing the detaining member. The lock may have a horizontally slidable second member 7 as shown or a rotary member. <IMAGE>

Description

SPECIFICATION Combination lock This invention relates to a combination lock, which can be employed in many ways such as a lock for luggage, doors, cylinders or safes.

Conventional push button locks mainly comprise the wheel type combination lock and the electronic push button lock. The operation of the former is complicated, time wasting, the total number of possible codes is very low, and the elements are fragile. The latter uses electronic elements to form a push button electronic lock: its cost is high and it is easy to get moisture inside and upset the lock by vibration. In a conventional push button lock, the setting of the push button keys can be found out from pushing the bush buttons one by one, and a new code can be set from outside. If the user forgets the combination code, sometimes the whole lock body will be damaged by repeated test ing. Generally the user does not often change the combination code and therefore a sealed structure allowing varying or setting the code is not neces sary.

Objects of the invention are to provide a push button combination lock wherein the hidden key arrangement in the inner part of the lock cannot be ascertained by pushing buttons or turning the lock body axle and pushing the push button key, wherein the combination codes cannot be changed by opening the base plate of the lock body and merely changing the inner hidden key.

According to this invention we propose a combi nation lock, comprising a lock body housing a lock mechanism comprising a first member having a plurality of keyways and one or more grooves pro viding at least one passageway; a movable second member having a plurality of blocking elements for location in the or each passageway, means for controlling the movable second member, a plural ity of movable keys, comprising an outer portion accessible outside the housing for operating the key and a hidden portion located in a keyway, the hidden portion having one or more blocking ele ments disposed so that in one position of the key, a passageway is blocked and in an alternative po sition of the key, the passageway is unblocked, a detaining member for retaining the keys in the one position and means for releasing the detaining member.

The main principle of the invention is to use an automatically reversible push button key for push ing indirectly the hidden key in the lock housing to let the key change its position up and down. Due to the special shape of said hidden key, the sliding plate can be driven to unlock the lock or the block of a rotary sleeve slide the passageway formed by the hidden key or blocked to have the effect of un locking or locking or setting code and return con trol. In the horizontally slidable plate, blocks at two sides of the hidden key are used for blocking or unblocking the blocks or the slidable plate to un lock or lock the lock. In the lock a groove is formed in the internal face of an annular sleeve, in which blocking can be achieved using hidden keys to the centre part and extruded blocks of the rotary sleeve in the groove to unlock or lock the lock.

The hidden keys can be changed for selecting the required code by opening or disassembling the base plate from the bottom of the lock body. The lock body of the invention can also be connected by a set of gears to drive or act with a conventional disc-shaped combination lock. The discshaped combination lock can have different combination codes for unlocking the lock or so that it is not easy for a thief to get the correct combination code of the disc-shaped set by trying the handle.

This invention, incorporating an improvement in the changing of the keys and the control keys, especially relates to a press key lock for use on coffers and safes, comprising a magnetic plate and a pull plate positioned under a supporting base plate and located below the slidable plate's lower end, and a guide slot and push slot can control the extension rod provided under the corresponding press key(s). The magnetic plate can be driven by the returned press keys or via a motor of shell body's one end to drive and slide hidden keys released to descend by time set control. The pull plate is positioned under the magnetic plate, via the driving motor of shell body's another end to control and slide hidden keys locked to arrange the hidden code, for completing unlocking.The panel coordinate with the positions of press keys, returned to install a cover plate having soft rubber washer, fixed by a short block and U-ring positioned under the push button and controlled, displaced by sliding plate locked on the hook plate at one end of the cover plate to position in locking and unlocking situation. When unlocking, depressing the press keys of corresponding shorter block makes the shorter block unblocked by a block one the keys and the sliding plate moves along a certain distance, releasing the cover plate whereby the press keys can be altered.

A horizontally movable push button combination lock is proposed in which a slidable plate possesses one or two sets of extruded blocks to be located in- a passageway in a base. In one position of the slidable plate, extruded block will be blocked by the block to lock the lock. Through the push button the setting hidden key(s) can be depressed to remove the blocks of the hidden key(s) so that the extruded block can slide through the passageway in the base and let the slidable plate carried by a push button unlock the lock, or let the striking plate of sliding plate move and act on a discshaped combination lock. The above design can be used in garages, safe boxes, cylinder locks in conventional disc-shaped combination locks to form a multi-function lock.

The linearly arranged push button keys and hidden keys can be placed in a ringed arrangement.

The linearly movable slidable plate can be substituted by a rotary axle or driven sleeve, and once all the hidden keys are in the unlocked position, the rotary axle and sleeve can drive a conventional disc-shaped combination lock. The above push button lock can be unlocked by separating exces sively the rotary axle from the sleeve. At the bottom of one or more hidden keys, a rod may touch a guide member to electrically connect a buzzer in order to give a warning to avoid damage or opening by a thief. A disc set can be driven by a transferred middle gear and get the combination codes of the disc-shaped combination lock.

Locks according to this invention can be used in large, precious equipment that requires fast convenient operation. The basic principle of unlocking and locking is same as that shown in Figures 1 - 12 such as via blocks with different possible positions, changing their positions to produce the effect of locking and unlocking, to achieve the purpose of changing the code. The positioned hidden keys can be released to return to their original positions.

The aforesaid disc-shaped lock may be provided with a counter-unlocking and alarm means of the outer diameter of the rotary disc and the retaining rod. By means of a cylinder extended from the known base member for positioning the driven disc, the locking state between the retaining rod and the driven disc would not be affected in case of the shaft being damaged.

Thus, the first member may consist of a rectangular-block shaped base having a plurality of parallel keyways in one or both its longitudinal sides with at least one row of grooves on each side of the keyways forming a continuous linear passageway. The second member may comprise a slidable member with an array of blocking elements corresponding to the grooves in the first member and sliding may be controlled by a push button from outside the housing. The keys may be depressable andsor rotatable and a spring may be located beneath each key for assisting its return when released.

The detaining means may comprise a longitudinal bar having regularly spaced means for cooperating with the bottom of the keys. The detaining means may be selected from one or more of a plurality of claws for engagement over the bottom of the keys, projections for abutment with a complementarily-shaped region at the bottom of the keys and a plurality of magnetic regions for cooperating with an attractable region on the bottom of the keys. The releasing means may comprise a push button accessible from outside the housing for translating the detaining means into a non-retaining position. The push-button releasing means may include a rod which acts on the side of a hole in the detaining means so as to translate the detaining means.There may be a groove in one side of each keyway and a bar located in the groove and having a plurality of projections locatable in complementarily-shaped recesses in the side of the key for setting the hidden key in the keyway.

The lock may further including a plate beneath the first and second members, which plate has a hole for each key, wherein the hole includes at least one sloping face, and means for moving each plate sideways to either pull down or push up or both in the keyway each key having means for enjoying the or each sloping face. There may be a timed motor for moving each plate and the connection from the motor may include a cam including one or more ratchets.

The first member may consist of an annular member with a plurality of spaced apertures on the inner circumference connected at the inner circumference by a continuous groove. The second member may consist of a rotatable sleeve seated in the annular member and having a plurality of blocking elements corresponding to each of the keyways and locatable in the continuous groove and an axle is located in the sleeve. In the rotary lock, the keys may be depressable and have an adjacent groove and blocking portion for providing the blocking and unblocking of the continuous groove; a spring may be located beneath each key for assisting its return when released and the detaining means may comprise a rotatable annular member having spaced magnets for attracting the keys and the releasing means includes a press button and spring.

The sleeve and axle may be connected substantially perpendicularly to the axis of rotation via a plurality of balls and springs to prevent rotation of the axle when excessive force is applied.

The combination lock of the invention may be connected to a conventional disc-shaped combination lock via gearing. The discs of the disc set of the disc-shaped combination lock may have tooth or ratchet-shaped portions for engagement by a complementary end of a control rod which may be manually controllable.

The means for gaining access to the inside of the lock body for altering the keys may include a removable cover plate over the button portions which has a lip which is fastened by a U-ring associated with the means for controlling the second movable member and released on movement of the second movable member by the controlling means. The combination lock according to this invention particularly when combined with a discshaped combination lock, may be furnished with a micro-switch connected to an alarm system.

Embodiments are described according to the invention by way of example and with reference to the drawings, in which: Figure 1 is a sectional view of an embodiment of a horizontally movable lock; Figure 2 is a transverse sectional view of the lock body of Figure 1; Figure 3 shows the lock body of Figures 1 and 2 in which a hidden key has been depressed; Figure 4 is a partly removed, longitudinal sectional view showing the lock body in an alternative position; Figure 5 is a partly removed longitudinal sectional view of the lock body in the unlocked state; Figure 6 is a diagrammatic, perspective view of a base and detaining bar of the lock; Figure 7 is a diagrammatic perspective view of a push button key, a hidden key and the detaining bar of the lock; Figure 8 is a perspective view of a slidable plate of the lock; ; Figure 9 is a front and rear elevational view of an alternative push button key used in another embodiment of the horizontally movable lock; Figure 10 is an elevational view of a seat and the detaining bar of another embodiment of the lock body; Figure 11 is a diagrammatic view illustrating the action of the push button key and the detaining bar of Figure 10; Figure 12 is a partially removed, longitudinal sectional view of an alternative lock body; Figure 12-1 is a transverse sectional view of a rotary key combination lock according to this invention; Figure 12-2 shows the lock body of Figure 12-1 with a rotary key which has been rotated; Figure 12-3 is a partially removed longitudinal sectional view of the lock body of Figure 1 when unlocked; Figure 12-4 is a perspective view of a base of the rotary key lock of Figure 12-1;; Figure 12-5 is a perspective view of a push button key, rotary key and spring member of the rotary key lock; Figure 12-6 shows the direction of rotation of the rotary key of Figure 12-5; Figure 12-7 is a diagrammatic view showing a return sheet, a rotary key and a return key of the rotary key lock of Figure 12-1; Figure 13 is an exploded view of a rotary lock body; Figure 14 is a longitudinal sectional view of a combination of the push button rotary lock of Figure 13 and a disc set; Figure 15 is a transverse sectional view of the push button lock portion of the rotary lock of Figures 13 and 14; Figure 16 is a plan view of the push button face of the rotary lock of Figures 13 and 14; Figure 17 is an exploded view showing the push button key and the hidden key of the rotary lock of Figures 13 and 14;; Figure 18 is a schematic view of the gears of a rotary lock of the invention wherein its rotary axle is driven by a middle gear to control the disc set of Figure 14.

Figure 19 is a partially removed, perspective view of a disc-shaped combination lock for use in the gears of Figure 18; Figure 20 is a schematic view of the disc-shaped combination lock of Figure 19 and a drive disc of a rotary lock; Figure 21 is a pictorial view of a door lock employing a combined horizontally removable push button lock and a rotary combination lock; Figure 22 is a partially removed, longitudinal sectional view of another alternative horizontally movable lock; Figure 23 is an exploded view showing the location of the hidden keys together with a magnetic plate and a pull plate employed in the lock of Figure 22; Figure 24 is a diagrammatic sectional view showing the hidden keys, magnetic plate, and the pull plate; Figure 25 is a diagrammatic, perspective view from underneath the magnetic plate and the pull plate;; Figure 26 is a circuit diagram for driving the magnetic plate and the pull plate; Figure 27 is a partially removed, longitudinal sectional view of the horizontally movable lock of Figure 22; Figure 28 is an exploded perspective view of a panel of the horizontally movable lock of Figure 22; Figure 29 is an exploded perspective view showing a push button, U-ring, gasket and slidable plate of the lock of Figure 22.

Figure 30 is a partially removed perspective view of another alternative slidable plate for use in the lock of Figure 22.

Figure 31 is a partially removed longitudinal sectional view of the lock body of Figure 22 with the cover plate in the unlocked state; Figure 32 is a partially removed longitudinal sectional view of the lock body of Figure 31 with the cover plate opened; Figure 33 is a longitudinal sectional view showing a rotary disc lock; Figure 34 is a side view of the rotary disc lock; Figure 35 is an exploded perspective view of a retaining rod assembly for use in the rotary disc lock; Figure 36 is a sectional view of the retaining rod assembly; Figure 37 is a perspective exploded view of another rotary lock of the present invention; and Figure 38 is a sectional view of the rotary lock of Figure 37 when assembled.

A combination lock according to the invention can be in the form of an independent, horizontally movable type or a rotary type lock or matchable with a conventional disc-shaped combination lock to work together and form a double lock; The horizontally movable lock and the rotary push button lock to be matched with a conventional disc shaped combination lock are described as follows.

As shown in Figures 1 and 2, a horizontally movable lock in accordance with the invention includes panel (1) push button keys (2), return key (3), push button (4), fixed plate (5), base (6), hidden keys (A), slidable plate (7), detaining plate (8) release springs (9), housing (10) and base plate (11), wherein: The panel (1) possesses holes for a plurality of push button keys, a hole for a return key and a hole for a push button.

As shown in Figures 1 and 7, the middle section of each of the push button keys (2) is used for locating one setting frame (20) and spring (21), is fixed between panel (1) and fixed plate (5) and extends upward and can return and float automatically by pushing thereon.

The return key (3) passes through panel (1) and fixed plate (5) and setting frame (20) and spring (20). At the end of its rod, there is a sloping surface for acting on the side of a hole in the detaining bar (8) and translating the same to let the depressed hidden keys (A) automatically float and return.

The push button (4) is connected with a connect ing rod integrally attached to the end of the slidable plate (7), and it is fixed or as shown in Figure 1, it is set by balls and spring and when push button (4) is forced excessively, it will be translated to avoid the thief applying excess force and damaging the lock.

As shown in Figures 1, 2, and 6, according to the positions of push button keys (2), the base (6) has holes for the keys. Said key holes are square and opened on one side, i.e. key holes are opened from the side of base (6) toward the inner part of the lock body. In the seat, there are two parallel sliding grooves (61) (62) for respectively receiving the upper or lower blocks (71) (72) integrally attached to the slidable plate (7).

The hidden keys (A) are square in plan view as shown in Figures 1, 2 and 7, and comprise a main stem portion with projecting blocks (Al) (A2) on each side. The tops may be bevelled.

The vertical length of the blocks is 2/3 width of the square at the rear position, at the botton of hidden key (A), there opened a vertical groove, the vertical length of the lowest extrusion part is the half of the width of the square, and also at the rear position and its side margin is reverted to form as a suitable rhombic angle.

On the two inner faces of the slidable plate (7), as shown in Figure 8 there are respectively placed five pairs of upper and lower extruded blocks (71) (72). The slidable plate (7) is located on both sides of the seat (6), said upper and lower extruded blocks (71) (72) are located respectively in the upper and lower sliding grooves (61) (62) of the seat.

As shown in Figures 1, 2, 6, 7 and 9, the front end of the detaining bar (8) is supported by a spring to keep it at a fixed position. The two sides of the detaining bar (8) are strip-shaped and fixed on the two sides of slidable plate (7) (Figure 3).

Right-angle retaining claws (81) on the detaining bar (8) extend into seat (6) and abut the lowest extrusion part of hidden key (A).

The release spring (9) is set in the hole at the bottom of each hidden key (A), and lies between the hidden key (A) and the base plate (11).

The housing (10) is especially used for limiting the progressive position of the striking plate at the front end of slidable plate (7) and setting other elements. The upper one of the housing margins is bent over perpendicularly outwardly into a flange and the lower other end is bent inwardly to form a lip. One end of the base plate (11) is bent into a lip which can sit in the lip of the housing (10); another end is also bent into a lip and can be pressed into the lip at the other end of the housing.

This horizontal removable lock body uses the changeable positions of the blocks (Al) (A2) of the hidden keys (A), the matching seat (6), the grooves (61) (62) and the blocks (71) (72) of the slidable plate (7) to produce the unlocked or locked state.

The removal of the base plate allows the state of the hidden keys (A) to be changed. The hidden keys (A) are returned due to the sliding of the detaining bar (8). With certain keys in blocking positions e.g. as in Figure 3 all these blocking keys must be depressed wholly so that the blocks (Al) are located between the adjacent upper and lower grooves (61) (62), so as not to block the sliding of the blocks (71) (72) in the base (6). Push button (4) will carry the sliding plate (7) and release the striking plate in the unlocked state.

As shown in Figures 2 and 4, when a hidden key (A) has been set under a certain code, such as the second hidden key (A) shown, its block (A2) will block the block (72) and stop it sliding into the lower groove (62) in the locked state. If a thief pushes the push button (4) as a test, all the hidden keys (A) are retained by the extruded block (71). If the top has bevelled edges, the abutment will be greater.

When someone wants to use the lock, firstly, he must push on the hidden key (A) of the set push button key (1) as shown in Figures 3 and 5. At that time, after hidden key (A) pushes on the detaining bar (8), the detaining bar (8) will return to detain the lowest portion of hidden key (A) and set, block (A2) drops to the lower part of the lower sliding groove (62), and the top of hidden key (A) drops to the position between the upper and lower sliding grooves (61) (62), where it cannot block the blocks (71) (72).

In the above depression setting method as shown in Figure 7, when the hidden key (A) is pushed and sunk, the lowest extruded portion will push and prop the claw (81) and the detaining bar moves until the claw (81) of the detaining bar (8) holds the lowest extruded part.

As shown in Figures 1 and 6, when the user pushes down the return key (3), the detaining bar (8) will be translated. The translation distance will just make the claw (81) slide off the lowest extruded part of the sliding key and allow the sunk hidden keys (A) to move upwards under the action of the spring (9).

If the lock is locked and a thief pushes the lock with force, the balls spring and a blocking extrusion point in the inner part coupled with the slidable plate (7) will make the push button (4) slide and take off excessively and just prop said blocking extrusion point by the front margin and push button (4) cannot be pushed again and, which avoids damage to the inner element structure on pulling the slidable plate (7) excessively.

A further feature of the invention is that the push button key (2) is integral with hidden key (A), as shown in Figure 9. The main two sides have asymmetrically arranged blocks (Al) (A2). At the front side there is located two horizontal grooves (A3) (A4), and from one edge at the bottom corner there is a sloping edge. The base (6) has, as shown in Figure 10, near the front of the key hole, a pair of parallel grooves (61) (62), similar to those of Figure 6. At the bottom of the base a horizontal through channel is located parallel to the long side of the base and continuous with the key holes for receiving a detaining bar (8).

A vertical groove (65) is provided on one side of each key hole and a copper bar (64) is locatable therein and is used for setting the hidden key (A) in the grooves (A3 (A4) of triangular cross-section at the front side of the hidden key (A). Said detain ing bar (8) is strip-shaped and has return action.

The detaining bar (8) possesses a plurality of integral triangular conical triangular elements for driving the hidden key (A).

As shown in Figure 11 the integral push button key (2) and hidden key (A) are in the floating position. The adjacent copper bar (64) on the seat (6), its groove (A4) is coengaging with the upper pyramidal projection. When the user pushes down on the push button key (2), the hidden key (A) will be depressed until both the grooves (A3) (A4) are engaged in the neighbouring copper sheet (64) and at that time, at one side of the hidden key (A4), a slanted edge (A5) just touches one end of a triangular element (82) on the detaining bar (8). Therefore when the user pushes down the return key (3), the pyramidal element (82) of the detaining bar pushes the slanted edge of the hidden key (A) leftwards and forces the hidden key (A) to float upward to the original top position, replacing the release spring (9).

The up and down action of the hidden key (A) can alternatively be controlled magnetically. As shown in Figure 12, under blocks (Al) (A2) the hidden key (A) has an extension around which is located a release spring (9) which acts between the hidden key and an abutment plate (12) along the bottom of the base 6.

The detaining bar (8) has a magnetic zone (83) beneath each key hole. When the hidden key is pushed down the release spring (9) is compressed and the extension is pushed down to be attracted and attached to the magnetic zone (83). The return action is caused by translation of the detaining plate (8) and so the magnetic force of magnetic zone (83) can no longer attract the extension rod which is returned to the original position.

A thin soft rubber pad layer may be applied on the panel (1) so that the up and down action of push button key (2) is not easy to see from the outside. The soft rubber pad can restore quickly, and the sealed character can prevent water getting in the inner part of the lock body and rusting. The stem of the push button (4) can be slanted for acting on the slidable plate (7).

The above described hidden key (A) of this design can be substituted by a similar cylindrical rotary key (R) and the base (6) correspondingly has a round key way. The rotary key (2) can be rotated and depressed. To change the position of the block on the key (91) (best shown in Figures 12-5 and 126) all the rotary keys can be allowed to float by the return key (3) to change the positions of the blocks (91) and form a locked or unlocked state.

The lock is locked when the blocks (71) (72) in the groove (62) are blocked by the block (91) and the rotary key(s) (R). The lock is unlocked when the push button is pushed correctly to make rotary key(s) (R) float or sink and all the extruded blocks (71) (72) are not blocked in groove (62), as shown in Figures 12-1 and 12-2. The slidable plate (7) is pulled out from the striking plate, and the lock body can pass through the push button key of the slidable plate (7) to control and change the up and down position of blocks (91) of the rotary keys (R), and control all the rotary keys to float by the return key in order to set or recombine the positions of blocks (91) and complete the setting of combination code.

The structure of the lock body includes a slidable plate (7) having one row of extruded blocks on each side of the base (6). There is a single row of slidable grooves (62) in the base (6). Around the inside edge of each key hole (61) extending back from the side of the base (6) on each side of the key hole, is a part-circumferential groove (63), as shown in Figures 12-3, 12-4 for the control and drive of each rotary key (R) as shown in Figures 12-5, and 12-6. A stem portion (24) beneath each push button key can be inserted into the rotary key (R) and turn the rotary key (R), the rotation and the setting of the rotary key (R) depending on spring member (94), located in the part-circumferential groove. A brake stop (93) for cooperating with the detaining lever (111) is located on the bottom of the rotary key, as shown in Figure 12-7.

Instead of a linear arrangement of the lock body, an annular arrangement may be employed mainly comprising a push button lock, disc-shaped combination lock and drive disc, wherein: As shown in Figures 13, 14, 15 and 16, the push button lock possesses 10 push button keys (100) bearing numerals or symbols and the corresponding hidden keys (B), a round panel (200), a return key (300), a rotary axle (400) a sleeve (500), a seat (600), a return rotary disc (700), an annular guide sheet (800). As shown in Figures 13 and 14, push button key (100) is sealed with a spring in the top panel (200), and has its rectangular push block base (110).

The push block (110) matches the shape of the guide hole (610) in the hidden key (B) housing (600). The extruded end of rotary axle (400) is a larger ring body.

In the rotary axle (400) are drilled several equally spaced holes (410) each receiving a spring (420) and a ball (430). The axle (400) is surrounded by a sleeve (500) which has an internal groove (510) for receiving the ball (430) in the assembled form. The front end of ring body can extend outside panel.

The end sleeve (500) is coupled with a drive gear (530), as shown in Figures 14 and 15. When the push button combination lock body of the invention is in the locked state, the sleeve (500) cannot rotate. If a thief wants to turn the rotary axle (400) excessively, the torsion cannot be accepted by springs (420), and the rotary axle (400) and sleeve (500) will separate and rotate in vain. Therefore, the whole lock body will not be damaged, nor will the disc-shaped combination lock part will not be driven.

Sleeve (500) is received in seat (600), which includes a guide hole (610) for each push button key.

Each guide hole (610) meets the centre of the sleeve in a vertical groove (620). Extruded blocks (520) on the sleeve of which there is the same number of push button keys (100) are located in an inner ring groove (630) in the seat (600) via the vertical groove (620).

The hidden key (B) can translate in seat (600) and guide hole (610), as shown in Figures 13, 14 and 15. Hidden key (B) has a portion (101) extending towards the centre.

In the arm (101) is a groove (102) which is bigger than the extruded block (520) of sleeve (500). After placing the hidden key (B) into guide hole (610), the arm (101) extends into vertical groove (620) and the respective extruded block (520) is located in the groove (102) in the unlocked portion. The inner hole of seat (600) forms a complete sectional hole, and the ring groove (630) ringed around the inner hole is matched to make the crack (102) of the correct hidden key (B) on the ring groove (630) and the crack (102) of the incorrect (i.e. setting) hidden key (B) float. When all the push button keys are at the fully unlocked position, all the grooves (102) are in the ring groove (630); therefore, when sleeve (500) is rotated, the extruded block (520) will not be blocked.In the locked state, the extruded blocks (520) are blocked by the arms (101) of the push keys, and the rotary axle (400) cannot rotate unless the set push button key is pushed (100), hidden key (B) is sunk, and the groove (102) moves downward into the ring groove (630).

As shown in Figure 17, in this embodiment the rotary axle (400) and sleeve (500) are substituted for the linearly movable slidable plate, the grooves (102) of the arms (101) of the hidden keys (B) have the block or unblocking effect. The upper portion of the hidden key (B) is controlled by the push button key (100), the bottom of the hidden key is held by a magnetic ring (710) of rotary return member.

Not all the keys need be used in setting a code.

The non-setting keys may have an electrically conductive downward projection.

When a magnetic hidden key (B) is pushed by mistake and sinks, if it is without the projection, the key will be attracted by magnetic ring (710) and if it is with the projection (103), the projection can penetrate magnetic ring (710) and guide member (800) under rotary return member (700). The guide member (800) is in an electric circuit of a buzzer.

The projection (103) of hidden key (B) will connect guide member (800), and hidden key (B) will be returned by spring (900) and the closed circuit will produce a warning sound, or inform people through a special circuit of tampering. If it is a setting hidden key (B), there is only a column at the bottom. Therefore, on depression of the hidden key (B), the bottom of column will be attracted by a magnetic ring (710) and retained in the unlocked position.

Furthermore, the return of hidden key (B) can be completed by the return key (300), rotary return disc (700) and springs (900) on the panel, and also the attraction will disappear and complete the action of return, as shown in Figures 13 and 14, the outer ring or rotary return disc (700) is jointed by the setting bolt and seat (600), inner ring is controlled by a spring (720), one end of said spring (720) being inserted into the seat (600), the other end being inserted into rotary return disc to retain the rotary return disc (700) in the correct position in which it can attract the hidden key (B). The return key (300) is inserted into panel (200). The seat (600) can make the rotary return disc (700) rotate to destroy the attractive action between the magnetic rings (710) and the hidden keys (B).The hidden keys (B) can be propped and returned by springs (900), and after releasing the return key (300), the spring (720) can also bring the rotary return disc (700) back automatically to the correct position.

The push button keys (100) are equi-spaced in the panel (200), which includes the return key (300) and possibly a door ring push button key (301) for a door bell as shown in Figure 16.

The disc set (121) of the disc-shaped combination lock as shown in Figure 14 is not coaxial with the drive axle, i.e. the rotary axle (400), and can be connected by drive means. The push button lock of the invention can be used for one unlocking stage.

When the push button lock is opened correctly, a conventional disc-shaped combination lock and the rotary axle (400) can open the second lock. The movement of rotary axle (400) is controlled firstly through sleeve (500), drive gear (530), middle gear (540), driven gear (120) to the disc set as shown in diagrammatically in Figure 18. The above-mentioned driven gear (530) is directly coupled to the sleeve (500). Therefore, sleeve (500) will be immovable when rotary axle (400) is rotated in vain and the disc set (121) cannot be driven. Middle gear (540) can directly transmit movement to the driven gear (120) or indirectly by an inertia gear (550). The rotation rate between rotary axle (400) to the disc set (121) is different from the direct transmission of the middle gear (540).When user uses lock, the position of the middle gear (540) can be changed from the inner part, as shown in Figure 18, and the rotation speed of driving and opening disc set (121) by rotary axle (400) changed to vary the code or rotation time of the combination lock.

As shown in Figures 19 and 20, the control rod (910) is driven by drive disc (901). The end of the detaining rod (910) of the invention is toothed matching the disc set which has teeth or other ratchet means. When the disc set (121) is not turned to the unlocked position, tooth-shaped end of the control rod (910) can couple with the disc set. During that time the rotary axle of the disc set (121) cannot rotate again. its purpose is to make thief unable to use the end of control rod (910) and the disc set (121) to test and find the correct combination codes. Therefore, if the push button lock part of the invention is in the unlocked state, the lock of the invention still cannot be unlocked by testing.

The burglarproof combination of the control rod (910) and the disc set (121) can be applied to a conventional disc-shaped combination lock. The last disc or edge of each disc set (121) equipped with teeth or ratchet is located adjacent the toothshaped end of the rod (910) and next to a push button lock with a linear slidable striking plate, as shown in Figure 21. The push button lock has a horizontally movable slidable plate, and only the tooth shaped end of the striking plate (920) (shown in Figure 21) is coupled with the disc set (121).

When the lock is first unlocked, the push button lock is opened, then the striking plate is out of the coupling disc set (121) position, and the discshaped combination lock can be rotated according to the combination code.

Another embodiment as shown in Figure 22, has the panel (1), push button keys (2), return key (3), push button (4), fixed plate (5), base (6), slidable plate (7), release springs (9), housing (10), and base plate (11), of this invention, as in the first embodiment. The detaining bar (8) of the first embodiment is replaced with a magnetic plate (80) which can be driven in one direction. The bottom of said magnet suction plate (80) is provided with a pull plate (14) which can be driven in the other direction to control locking and unlocking.A supporting plate (12) for the base (6), the magnetic plate (80), the pull plate (14) and the hidden keys (A) are described accompanying with Figure 23 as follows, wherein: The hidden keys (A) have a metal seat (A9) provided on the lower end, said metal seat (A9) can be constructed from the same body material as the concealed key or fixed on the bottom of the hidden key (A). A rod (A6) extends downwards, the lower end of the rod (A6) having a horizontally through hole (A7) to receive a pin (A8) which projects out of both ends of the hole. The pin is only employed for those hidden keys that are required for setting otherwise; the pull pin (A8) is not provided. Push ring (9) is provided on the (A) rod in the same way as earlier described.

The supporting plate (12) fixed on the bottom of base (6) has through holes for the extending rods (A6) of the hidden keys (A) is larger than the metal seats (A9), but smaller than the rectangular hole that based on the diameter of push spring (as shown in Figure 23). When the hidden key (A) descends, the push spring (9) outside the metal seat (A9) is compressed and the metal seat (A9) can pass through the rectangular hole to be held on the magnet suction plate (80) of supporting force plate's (112) bottom.

The magnetic plate (80) is installed under the supporting plate (112) and located beneath the slidable plate (7), the magnetic plate (80) provides a horseshoe magnet (830) at each hidden key guide slot (84). When the magnetic plate is translated the magnet can be moved away from the hidden key, which is released upwardly to return to its original position by push spring. The sliding movement of the magnetic plate (80) and the pull plate can be controlled via a motor.

The pull plate (14) is for unlocking and is installed under the magnetic plate (80) and has a slot (141) for each rod (A6). The slots (141) are trapezoidal, having downwardly sloping sides (as shown in Figures 22, 23, 24, and 25).

When the pull plate is stationary, the rod (A6) of the hidden key (A) is located at the highest place of pull slot (141) of pull plate (14). At the same time, if want to arrange hide marks, the pin (A8) on the hidden key rod (A6) is wider than the slot (14) and can sit on the sloping sides of the slot (141), best shown in Figure 25. When the pull plate is pulled, the hidden keys (A) having pull pin (A8) are gradually pulled down. Those hidden keys (A) not provided with a pull pin (A8) will not be affected. The push button key (2) can assist unlocking. A motor can be driven to displace the pull plate (14) and pull down the hidden key (A) (as shown in Figure 24, 25).

The above said construction may involve not only pressing the push button key (2) arranged as a hide mask and return key (3) by hand to achieve the effect of locking and unlocking, but also connecting means outside the lock body with the inner lock body to cause unlocking and locking.

The driving circuit of the motor (as shown in Figure 26) for the magnetic plate (80) or the pull plate (14) employs a controlling cam (16) on a connectinog rod (15), the cam (16) is moved by the driving motor via a reduction device. The perimeter of the cam (16) has one or two ratchet slots 1800 apart (for locking and unlocking) to couple with a receiving current arm pair (17). As the cam rotates, it cuts the power off once or twice to cut out the motor and stop the movement of the cam.

The up and down positions of the hidden key (A) can be controlled by the pull plate (14) or the magnetic place (80) is controlled by the motor to control return key (3) to make hidden key (A) rise to its original position.

Another important feature of this invention is the operation of changing the combination code with the cover plate (1000) of the front panel (1) of the lock body replacing the base plate (11) earlier described to change hidden keys (A). As shown in Figures 27 and 31, the push button key (20) and hidden key (A) are in one and in the form of a moulded monoblock. The hidden key as above, provides a metal seat (A9), and a rod (A6) and through hole at its lower end. The upper portion can be inserted in a soft rubber washer of cover plate (1000). Two sides of the middle portion have extending rods, with blocks (Al) (A2) positioned a little lower.

The lock body further has a base plate (11) and detaining plate (8) or base plate (11), magnetic plate (80) and pull plate moulded as a whole body.

Slidable plate (7) extends upwardly to a couple with the push button (4), and is moved by the rightwards movement of the button (14). Extruded blocks (71) (72) of the slidable plate (7) cooperate with the press keys (20). One block (72) is shorter than the others. There is a block (A2) of corresponding press key (20) on its sliding locus. The upward extending part of slidable plate's (7) right end stretches out push plate (73) in proper length to two sides, at the same height, it stretches out into a supporting plate (74).

As shown in Figure 28, the bottom of cover plate (1000) has one-piece moulded soft rubber washer (1010) and a guard plate (1020). The soft rubber washer (1010), produces a plurality of keys (1030).

One side of the keys (1030) is marked with symbols such as numbers 1-9, C, SET, and C for the block (A2) of corresponding press key (20) for the shorter block (72). Guard plate (1020) provides slots for the two rows of press keys (20), and the SET return key (3) pass. The gasket and keys are located between the guard plate (1020) and the cover plate (1000). The cover of cover plate (1000) is seated in the panel (1) via a lock portion (1060) and a hook portion (1070) at its two ends. The hooking portion (1070) is angularly bent at least twice and its lower end is flat as shown in Figure 27. When the cover plate (1000) is shut, the locking portion (1060) is inserted under the bottom of panel (1), and the lower end of hooking portion (1070) is positioned on the top of the housing (10) to receive U-ring (42), positionable by pressing.

As shown in Figure 29, push button (4) couples with slidable plate (7) and slides on the surface of panel (1), with a clip plate (41) tq clip panel (1) in position. The U-ring (42) is pressed under the clip plate (41). The U-ring is formed by a round rod.

The two ends of the rod form an opening which has a width larger than the width of the upward extending part of the slidable plate (7), but more narrow than the width formed by the two push plates (73). When the U-ring (42) is seated on one end of the rod of slidable plate (7) (as shown in Figure 27), hook (42) can receive extending rods to be driven to and fro along the guide slot (1050) of shell body's two sides.

When lock body is in the locking state the slidable plate with its two push plates (73) pushes and supports the two free ends of the U-ring (42) to support and press on the hooking portion (1070) of cover plate (1000), (as shown in Figure 27), while unlocking, slidable plate (7) moves rightwards until the shorter block (720) presses and supports the block (A2) (marked C in Figure 28) of the press key (20). At the same time, supporting plate (74) supports one end of the U-ring (42), but the other end (42) remains on the hooking portion (1070). Thus, cover plate is still shut as shown in Figure 31.

As shown in Figure 31, the shorter block (720) of the slidable plate (7) is blocked by the press key block (A2) (marked C). The slidable plate cannot move backward, when pressing the press key (20) (marked C), making its block (A2) descend, and keep away from the sliding locus of shorter block (720), it can move backward by the slidable plate (7) (as shown in Figure 32). The movement of the slidable plate (7) makes the supporting plate (74) slide rightwards until it leaves the supporting hooking portion (1070). Then cover plate (1000) can be opened, allowing all the press keys (20) to be moved from the top of the lock body.

Thus, the press key (20ì marked C is to provide for the function of opening the plate cover. However all the other press keys should have been controlled in unlocking position or when unlocking.

If in the locked state, pressing the press key C cannot make hook (42) leave the supporting hooking portion as the slidable plate (7) cannot slide.

In unlocking the distance moved in the first stage of unlocking is the distance between the U-ring's (42) rear rod in the locking state and the supporting plate (74) of the slidable plate (7). Thus, when completing unlocking, the supporting plate (74) just supports the U-ring (42), and once the movement of the second section opening cover plate (1000), the supporting plate (74) is pushing hook (42) as its feature.

The shorter block (720) can be provided by removing the right hand end of one of the blocks (72) and to increase security its corresponding press key (20) is not required to having a special symbol.

The slidable plate (7) cooperates with base (6) to arrange the press key's (20) position, whereby press keys (20) arranged on the slidable plate's (7) two ends separately, (as the slidable plate construction shown in Figure 30).

The present invention is effective and accurate.

Important features are summarised as follows: A magnetic plate and pull plate are employed instead of a return key and lock plate to control, holding the hidden keys and releasing them using a motor.

A pull plate is used for operating the press keys cooperable with the motor, making predetermined hidden keys disc end or rise at the same time A simple press key is used instead of a plurality and locking and unlocking are controlled by a cover plate instead of a base plate in the lock body. When changing codes, the cover plate, can be removed and press keys can be changed directly.

Referring to Figure 33, there is shown a rotary disc lock, in which the driving disc (122) and two or more driven discs (123) are furnished, on the outer edges, with teeth or curved or wave-shaped notches and salient lugs. The driving disc (122) has a bigger outer diameter, but both the driving disc (122) and the driven discs (123) are provided with notches respectively for receiving a control rod (91). In locking up position of the discs (122) and (123), a lock picker who is trying to unlock the lock may press the retaining rod (91) to touch the edge of the driving disc (122). Since the outer edge of the driving disc (122) is a smooth surface, may be able to have the notch on the driving disc (122) aligned with the control rod (91) and sslide in the notch through feeling.Before sensing the notch of the driven discs (123), the retaining rod (91) has to touch the edge of the driven discs (123). Unfortunately, the control rod (91) has already slid into the notch, and the driven discs (123) cannot be rotated without being driven by the driving disc (122). As a result, the driven discs (123) can be sensed by feeling.

The aforesaid structure of using different outer diameters between the driving disc 122 and the driven disc (123) is a design which can prevent the combination of the lock from being sensed. Further, a special structure of the retaining rod may be used as an alarm means.

Referring to Figures 35 and 36, there is shown a control rod (91) having a guide groove (911), of which the top has a space for receiving a push rod (912) having a flange at one end and having a spring (915) mounted on the other end, which forms into square base, and under the square base, a salient lug is furnished and is to be inserted into the notch of the discs (122 and (123).

After the push rod (912) is in the guide groove (911), a positioning plate 913 is attached over the groove (911) to have the push rod (912) positioned in place. On the top of the guide groove (911), a microswitch (914) is mounted in such a manner that the trigger part of the microswitch is subject to touching the push rod (912) upon moving upand-down as shown in Figure 36. When the control rod (91) is not inserted into the notches of the discs (122) and (123), the push rod (912) extends downwards as a result of the spring (915) tension).

Upon the control rod (91) touching the edges of the discs (122) and (123), the push rod (912) will be pushed upwards to trigger the microswitch (914), which in turn triggers an alarm system.

In other words, upon the lock being unlocked, the control rod (91) will be inserted fully into the notches of the discs without having any force to move the push rod (912) upwards. in the locking state or upon the control rod (91) being inserted into the notch of the driving disc (122) the continuing downward movement of the retaining rod will cause the push rod (912) to slide upwards to trigger the microswitch (914), which will then turn on an alarm system.

Referring to Figure 37 and 38, there is shown a disc and rotary type of lock, which has been designed to have the features of force separation and of maintaining locking state after being damaged or destroyed.

The force separation means that the shaft 4 extending out of the combination dial and having a "T" - shaped top is covered with a rotary housing (40) and a cap (44). At a suitable position on the shaft (4), a hole 41 is furnished for mounting a spring (42) and a steel ball (43) so as to mount the rotary housing 40 in place. In the locking state, if the rotary housing (40) is rotated with force, the housing (40) may be separated from the shaft (4).

The counter damage protection means that the base member (6) has a cylinder (64) extending backwards with a suitable length and being sleeved over the shaft (4). On a suitable position of the shaft (4) when is out of the cylinder, there is furnished a pin to fix the driving disc (122) to the shaft. The cylinder (64) is mounted with a spring, two or more than two driven discs (123), and a clamping clip (65) at the end there of to prevent the driven discs (123) from sliding off the cylinder (64). According to this structure, the driving disc (122) can still drive the driven discs (123). Upon a lock picker having destroyed the rotary housing (40) or even the shaft (4) having been destroyed, the driving disc (122) may be hit to separate from the control rod (91), but the driven discs (123) are still mounted together with the cylinder (64), the base member (6) and the wall surface of a box or a cabinet, i.e., the control rod (91) is still controlled by the driven discs (123) to maintain a safe or the like in a locking state. In that case, the driven discs (123) can never be driven to the unlocking position because of the shaft (4) being unable to drive them.

Claims (68)

1. A combination lock, comprising a lock body housing a lock mechanism, comprising a first member having a plurality of keyways and one or more grooves providing at least one passageway, a movable second member having a plurality of blocking elements for location in the or each passageway, means for controlling the movable second member, a plurality of movable keys, comprising an outer portion accessible outside the housing for operating the key and a hidden portion located in a keyway, the hidden portion having one or more blocking elements disposed so that in one position of the key, a passageway is blocked and in an alternative position of the key, the passageway is unblocked, and a detaining member for retaining the keys in the one position and means for releasing the detaining member.

2. A combination lock according to claim 1, wherein the first member consists of a rectangularblock shaped base having a plurality of parallel keyways in one or both its longitudinal sides with at least one row of grooves on each side of the keyways forming a continuous linear passageway.

3. A combination lock according to claim 1 or 2, wherein the second member comprises a slidable member with an array of blocking elements corresponding to the grooves in the first member and sliding is controlled by a push button from outside the housing.

4. A combination lock according to claim 1, 2 or 3, wherein the keys are depressable and!or rotatable and a spring is located beneath each key for assisting its return when released.

5. A combination lock according to claim 1, 2, 3, or 4, wherein the detaining means comprises a longitudinal bar having regularly spaced means for cooperating with the bottom of the keys.

6. A combination lock according to claim 5, wherein the detaining means is one or more of a plurality of claws for engagement over the bottom of the keys, projections for abutment with a complementarily-shaped region at the bottom of the keys and a plurality of magnetic regions for cooperating with an attractable region on the bottom of the keys.

7. A combination lock according to any one of claims 1 to 6 wherein the releasing means comprises a push button accessible from outside the housing for translating the detaining means.

8. A combination lock according to claim 7, wherein the push-button releasing means includes a rod which acts on the side of a hole in the detaining means so as to translate the detaining means.

9. A combination lock according to any preceding claim having a groove in one side of each keyway and a bar located in the groove and having a plurality of projections locatable in complementarily-shaped recesses in the side of the key for setting the hidden portion of the hidden key in the keyway.

10. A combination lock according to any one of claims 1 to 9, further including a plate beneath the first and second members, which plate has a hole for each key wherein the hole includes at least one sloping face, and means for moving each plate sideways to either pull down or push up on both in the keyway each key having means for engaging the or each sloping face.

11. A combination lock according to claim 10, having a timed motor for moving each plate and the connection from the motor includes a cam including one or more ratchets.

12. A combination lock according to claim 1, wherein the first member consists of an annular member with a plurality of spaced apertures on the inner circumference connected at the inner circumference by a continuous groove.

13. A combination lock according to claim 1 or 12, wherein the second member consists of a rotatable sleeve seated in the annular member and having a plurality of blocking elements corresponding to each of the keyways and locatable in the continuous groove and an axle is located in the sleeve.

14. A combination lock according to claim 1, 12 or 13, wherein the keys are depressable and have an adjacent groove and blocking portion for providing the blocking and unblocking of the continuous groove and a spring is located beneath each key for assisting its return when released.

15. A combination lock according to claim 1, 12, 13 or 14, wherein the detaining means comprises a rotatable annular member having spaced magnets for attracting the keys and the releasing means includes a press button and spring.

16. A combination lock according to claim 13, 14 or 15, wherein the sleeve and axle are connected substantially perpendicularly to the axis of rotation via a plurality of balls and springs to prevent rotation of the axle when excessive force is applied.

17. A combination lock according to claim 1 or any one of claims 12 to 16, connected to a conventional disc-shaped combination lock via gearing.

18. A combination lock according to claim 17, wherein the discs of the disc set of the disc-shaped combination lock have tooth or ratchet shaped portions for engagement by a complementary end of a control rod.

19. A combination lock according to claim 18, wherein the control rod is manually controllable.

20. A combination lock according to any preceding claim, having means for gaining access to the inside of the lock body for altering the keys.

21. A combination lock according to claim 20, further including a removable cover plate over the button portions which has a lip which is fastened by a U-ring associated with the means for controlling the second movable member and released on movement of the second movable member by the controlling means.

22. A disc-shaped combination lock having discs of different diameters and a retaining rod furnished with a micro-switch connected to an alarm system.

23. A combination lock constructed and arranged substantially as herein described with reference to any of Figures 1 to 8.

24. A combination lock constructed and arranged substantially as herein described with reference to any of Figures 9 to 11.

25. A combination lock constructed and arranged substantially as herein described with reference to any of Figures 12-1 to 12-7.

26. A combination lock constructed and arranged substantially as herein described with reference to any of Figures 13 to 21.

27. A combination lock constructed and arranged substantially as herein described with reference to any of Figures 22 to 26.

28. A combination lock constructed and arranged substantially as herein described with reference to any of Figures 27 to 32.

29. A combination lock constructed and arranged substantially as herein described with reference to any of Figures 33 to 36.

30. A combination lock constructed and arranged substantially as herein described with reference to any of Figures 37 to 38.

31. A new push button combination lock includes push button key, panel, return key, push button, fixed plate, seat, hidden key, slidable plate, detaining bar, push spring, housing, base plate, and the position change of hidden key will affect the locked or unlocked status, wherein: Push button keys - are arranged and placed on the panel and are kept at the top position by spring, return key can drive the detaining bar moving forward at the bottom of seat, seat has certain numbers of square holes which are opened from sides to the inner part, and at two sides, there are two vertical and horizontal sliding grooves for sliding locks of sliding plate, hiding key - is square and placed in the key hole of seat, at middle section of two sides, there are blocks which are unevenly placed at two sides, the length of block is 2i3 width of square, and blocks are extended forward. There is a vertical groove at the bottom of hiding key, the lowest extruded part is extended forward and its length is the half of width of square and is integral with push button key, sliding plates - are sliding between two sides of seat and is integral by bending and connecting each other. At the front end, there is a striking plate, and at two inner sides of seat, there is one or two rows equal-distance blocks sliding in it, buttoning plate - is set under the sliding plate and placed a claw which is folded upward into hiding key for buttoning or loosening the sinking hiding key, and base plate - is a mechanical buttoning structure and can be simply assembled and disassembled at the bottom plate of housing.

32. Hiding key as claimed in claim 31, wherein there are two horizontal buttoning grooves at front side, and at the suitable slant angle and width for directly being propped and pushed by the moving of buttoning plate with floating triangular column, and the horizontal buttoning groove is used for buttoning and setting the pyramid with the neighboured copper sheet fixed in the key hole of seat in order to change the upper and lower position of hiding key.

33. Lock body as claimed in claim 31, wherein the setting of the upper and lower position of hiding key is controlled by matching the buttoning plate at the lower part of seat and the extension lever position of hiding key with magnetic zone and make the sinking hiding key attracted by the magnetic force and set at the sinking position; and magnetic zone can be moved away by sliding the buttoning plate and push hiding key back to the original position by pushing the push spring.

34. A push button combination lock which is controlled separately by a hiding rotary key, wherein on the panel using the automatic returned push button key to directly rotate or push and press the rotary key in the lock body sunk or rotated 1800 and change the position of block at the margin of two tangent plane of rotary key in order to unlock, lock or set code.

35. The structure of lock body as claimed in claim 34, wherein at two tangent sides of upper section of rotary key, there are unevenly placed blocks and the rotation of rotary key is caused by inserting cross type torsional lever under push block of push button key into the upper section of rotary key and the rotary key is rotated 90" up, spring sheet will force said rotary key to speed up to complete the 1800 rotation.

36. Lock body as claimed in claim 34, wherein the setting of code is to push the push button key and then rotate push button key 1800, or firstly rotate and then push to let rotary key in the seat will also change the position of block to complete the recombination and the setting of code.

37. Lock body as claimed in claim 34, the sinking and setting of rotary key is that the hook rods corresponding to the bottom automatically hook and brake rotary key and return plate is carried by pushing the return key and carried hook rod to make all the sinking rotary key spring back upward.

38. The structure of a push button combination lock is a multi-function lock is formed by combining a pan-shaped combination lock on a rotary push button lock and its main structure includes rotary push button lock and pan-shaped combination lock and drive pan.

39. A push button combination lock as claimed in claim 38, includes several corresponding push buttons, hiding key, round panel, return key, door push button key, rotary axle, sleeve, seat, return rotary pan, guide sheet, wherein: Push button key - is placed in ring on the panel, its bottom is a rectangular push block, hiding key - corresponding to push button key and is placed in the guide hole of seat and extended a vertical extruded beam to the central part, and at the extruded beam, there is a crack for slid ing the extruded block of sleeve, at the bottom, there extruded a column or under the column, there extended a touching rod, rotary axle - is a pan body with bigger extended end, the middle section matched the position of sleeve is drilled with several holes for assembling springs and balls in order to prop sleeve, sleeve - has an inner ring to match the balls of rotary axle and placed same numbers of semi-circle setting hole, at the suitable position of outer ring column plane with same angle, there placed extruded block which can extend into ring groove of seat; its front end extended outside to the panel to curve the code scales, and its tail end to couple a drive gear, seat - matching the position of push button key, hiding key, return key to place guide hole and vertical groove is opened at the central side of guide hole in order to penetrate the central hole and matching with extruded block of sleeve to open a ring groove, return rotary pan - is set at the lower end of seat by bolt lever and controlled by a folded and rotated spring to make return key to drive return rotary pan rotating a certain angle and then free rotated and returned, on the rotary pan, the position corresponding to the column of hiding key, there placed a magnetic ring, guide sheet - is connected on a buzzer and make hiding key with touching rod sink to let touching rod pass through the touching and proping guide sheet of magnetic ring to conduct the buzzer.

40. Hiding key as claimed in claim 39, wherein the setting code hiding key with magnetic column bottom the crack of the extruded beam which is higher than the crack of the extruded beam of nonsetting code hiding key with magnetic column at partial bottom and other partial bottom with conductivity and non-magnetic alloy column, and a magnetic touching rod extended downward from the center.

41. Rotary axle and sleeve as claimed in claim 39, wherein between them, sleeve will be stuck by coupling springs and balls and if rotary axle is turned round excessively, it will not couple with sleeve and separate from sleeve to rotate in vain and can not drive the pan shape combination lock.

42. Pan shape combination lock as claimed in claims 38 and 9, wherein after unlocking the push button lock, the drive gear at the end of sleeve is used to drive the pan-shaped ring set.

43. The indirect drive method as claimed in claim 42 is to transmit dynamics to the driven gear of pan-shaped combination lock by a middle gear or change the position of middle gear to make dynamics to pass again through an inertia wheel and then drive the driven gear.

44. The pan-shaped ring set as claimed in claim 42, wherein the margin of main rotary ring and the ring margin of each ring sheet have curved ratch or tooth shape.

45. Pan-shaped combination lock as claimed in claims 42 and 44, wherein the buttoning rod driven by drive pan equipped with tooth end can couple with tooth shape pan ring set without crack.

46. Lock body as claimed in claims 38, 42 and 44 is also combined by the conventional panshaped combination lock and push button lock with linear sliding striking plate and the end of striking plate is tooth shape and coupled with the tooth of margin of pan-shaped ring set.

47. A driving press key and panel construction of press key, especially relates to a press key controlling lock which used on big box, wherein: HIDING KEY - a metal seat provided on its lower end to pass supporting force plate and absorbed by magnet suction plate when descending, metal seat stretching downward smaller extending rod which arranged horizontally with passing hole on its end, making hiding key that arranged as hide mark fit pull pin and drived by pull plate; SUPPORTING FORCE PLATE - directly fixed on the bottom surface of base seat, providing rectangular hole (that corresponding to the extending rod) for passing the metal seat of press key;; MAGNET SUCTION PLATE - located under the supporting force plate, providing horseshoe magnet corresponding to the extending rod, coordinating with the open mouth of magnet provided a extending vertical guide slot, magnet of magnet suction plate can absorb the descending hiding key's metal seat, when the magnet suction plate moving, the guide slot may not be interfered by extending rod, while magnet after displacement can't absorb metal seat, making hiding key rise to return to its original position; PULL PLATE - positioned corresponding to the hiding key, its bottom surface provided trapezoid seat that incline downward proper high with same distance, pull slot arranged corresponding to extending rod, passing downward vertically through the thinnest place to the thickest place of trapezoid seat, its width smaller than the length of pull pin of extending rod.

48. The press key lock as claimed in claim 47, the unlocking movement can be moved by pull plate, pulling hiding key that having pull pin to descend by trapezoid seat, then making arranged hiding key descend to be positioned by magnet suction plate absorbing metal seat, those not arranged concealed key won't be affected.

49. The press key lock as claimed in claim 47, the locking and unlocking movements can be completed without magnet suction plate,, just making pull plate move to one side extremely and positioned for unlocking, next movement let it move to reverse side and return to original position as returning hiding key in locking situation.

50. The press key lock as claimed in claim 47, provides the driving motor in proper place of shell body to drive magnet suction plate or pull plate or both making displacement of constant distance.

51. The driving motor construction as claimed in claim 50, comprises a simple speed reducing device and a controlling cam, making linearity dis placement of constant distance via a connecting rod driving magnet suction plate.

52. The controlling cam as claimed in claim 51, provides a ratchet slot or two ratchet slots that op posite 1800 each other to couple with a receiving current plate group, said receiving current plate group making controlling cam rotate 360" or 1800, then automatically cut off the current of driving motor immediately.

53. The press key lock as claimed in claim 49, 52, let lock body make locking and unlocking movements without magnet suction plate, only by the controlling cam that having two ratchet slots.

54. The press key lock as claimed in claim 47, provides cover plate on the panel, completing the changing number operation by opening cover plate to change press key.

55. The press key lock as claimed in claim 54, wherein the bottom of cover plate provides soft rubber washer which is clipped and fixed on the bottom surface of cover plate by guard board, making press key, returned key pass through guard board and inserted in the press key gasket of soft rubber washer, then stretch out cover plate,

56. The cover plate as claimed in claim 54, 55, front end provides lock plate to be inserted in the surface board, rear end provides hook plate that having several turns whose lower end is plane, making hook that drived by sliding plate support and fix cover plate.

57. The press key lock as claimed in claim 54, sliding plate can be a france type according to the arranged press key's position of base seat, two inner sides having upper and lower slippers or can be vertical plate type, two outer sides having upper and lower slippers.

58. The press key lock as claimed in claim 54, 57, cuts the rear end of one of sliding plate's lower slipper, making resist plate of press key on its sliding locus can complete the purpose of unlocking by moving sliding plate.

59. The press key lock as claimed in claim 54, the extending rod of sliding plate's rear end can connect push button, the rod having two push plates projecting from the side end and a support plate projecting backward, then fit a hook that bent by a rod body.

60. The press key lock as claimed in claim 54, 59 where in two rod's end of hook connect back push plate to move, rear end can be supported and displaced by supporting plate.

61. The press key lock as claimed in claim 54, 59, when in unlocking situation, the shorter slipper of sliding plate touches corresponding resist plate, and the supporting plate touches the back side of hook, whereas when press key resist plate of corresponding shorter slipper leaving block position, sliding plate can move backward to drive hook, making rod's end of hook's front side not support hook plate of cover plate.

62. The press key lock as claimed in claim 54, 61, when in locking situation, sliding plate press hook via the push plate of its rear end making its rod's end support the hook of cover plate.

63. An improved push-button combination lock with counter-unlocking device and its combination to be present from its bottom, of which the feature is to still fallow a conventional type of disc and rotary lock except the discs therein having different diameters, and the retaining rod being furnished with a micro-switch to be controlled with a push rod; and said micro-switch controls an alarm system.

64. A push-button lock mechanism as claimed in claim 63, wherein the driving disc has longer diameter than that of the driven discs.

65. A push-button lock mechanism as claimed in claim 63, wherein the portion of the retaining rod to be inserted into the notches of the disc includes: a guide groove on said retaining rod; a push rod with a flange portion on the top, and a square base at the bottom end with a spring, and a salient lug under said square base; a positioning plate for mounting said push rod; and a microswitch mounted on the top of said guide groove.

66. A push-button lock mechanism as claimed in claim 63 or 65, wherein when the notch on any one of said discs is not aligned with said retaining rod, said retaining rod will move downwards to have said push rod stopped by said discs and to trigger said microswitch.

67. A counter demolition for unlocking structure of a push button combination lock with counterunlocking device and its combination to be preset from its bottom, of which the features are: a shaft is mounted on its extending out end with a spring, and a steel ball to be engaged with a rotary housing, and its tail end of said shaft outside the cylinder is mounted with a driving disc; the rear portion of the cylinder over said shaft is mounted with a spring and two or more than two driven discs, and a clamping ring; and a driving disc to be drived with said shaft, and said driven discs being not driven by said driving disc directly but to be driven with a stud on said driving disc.

68. A push-button lock as claimed in claim 67, wherein the rotary housing may, in lock state, be removed and separated from the shaft upon being turned with force.