CN101725278B - Lock picking device with concealed keyhole - Google Patents

Abstract

An unlocking device with hidden keyhole comprises a shell, a shifting body, a key guiding seat, a connecting rod and a fixed block. The shell is arranged on one side of a lock and is provided with an accommodating space, the shifting body is movably arranged in the accommodating space, the shifting body is provided with an embedding space and an opening, the opening can be aligned with a key hole of the lock by means of dislocation action of the shifting body, the key guiding seat is movably arranged in the embedding space, the key guiding seat is provided with an arrangement hole for a key to be arranged in, the fixing block is fixed at the port of the embedding hole and is provided with a through hole and an accommodating part, the connecting rod penetrates through the through hole and the accommodating part, one end of the connecting rod can be rotated, the other end of the connecting rod is provided with a connecting part, and the connecting part can be embedded in the key and drive the key to move and rotate so as to unlock and lock the lock.

Description

Lock picking device with concealed keyhole

technical field

The invention relates to an unlocking device with a hidden key hole, in particular to a device in which the key hole for inserting a key can be hidden, and the key can still be introduced for unlocking and locking operations.

Background technique

The existing lock includes one or more lock cores that can be inserted and fitted with keys, and can rotate to drive the lock to open or close. However, most of the existing locks have exposed keyholes where keys can be inserted. The exposed keyholes are easy to be opened by someone who wants to intrude with a foreign object. What's more, the key can be copied by detecting the inside of the keyhole to open the lock.

China Taiwan Announcement No. M287361 "safety lock structure with hidden keyhole" new patent case, is to be provided with a cover on the outside of a lock body, the cover has an opening corresponding to the lock hole of the lock body, and the A magnetic plate is provided on the inner surface of the cover corresponding to the hole, and the magnetic plate has a through hole with a diameter slightly smaller than the hole, so that the hole and the through hole are combined to form a storage space with a magnetic inner edge. slot, thereby absorbing a decorative cover to cover and hide the lock hole. Yet this existing lock structure is a kind of very passive keyhole shielding method, as long as a person with a heart can utilize a magnet that the magnetic attraction force is greater than this magnetic force plate, the decorative cover can be taken off, or utilize a pointed object to separate the decorative cover from the magnetic plate. Inserting at the edge of the accommodating groove can also pick out the decoration cover, so that the function of the existing structure to hide the keyhole is useless.

Contents of the invention

The main purpose of the present invention is to provide an unlocking device for hiding a keyhole, which is used to hide the keyhole of a lock so that the keyhole cannot be directly touched or peeped at.

Another object of the present invention is to provide a lock unlocking device with a concealed keyhole for introducing a key to unlock or lock the lock.

Another object of the present invention is to provide a lock unlocking device with a hidden key hole, so as to achieve a better anti-theft effect.

The unlocking device for concealing a key hole according to the present invention comprises a casing, a shifting body, a key introduction seat, a connecting rod and a fixing block. The housing is arranged on one side of a lock, and the housing has an accommodating space, which forms two openings through the housing, and the keyhole of the lock corresponds to one of the openings; the displacement body is The displacement body has a blind hole-shaped embedding space, so that the embedding space forms an embedding hole on one end surface of the displacement body, and the other side of the displacement body One end face is provided with an opening, which can match the keyhole with the help of the shifting action of the shifting body; A key is inserted into the insertion hole; the fixed block is fixed at the port of the insertion hole of the displacement body, and the fixed block has a through hole and an accommodating part connected thereto; the connecting rod is arranged through the fixed The through hole and the receiving part of the block, and one end of the connecting rod can be rotated, and the other end is provided with a connecting part, and the connecting part fits and drives the key to move and rotate.

The beneficial effects of the present invention are:

The shell of the unlocking device is arranged on one side of the lock to hide the keyhole of the lock so that the keyhole cannot be directly touched or peeped at.

The key introduction seat of the unlocking device has an insertion hole for inserting a key, and the connecting part of the connecting rod can be fitted with the key and drive it to move and rotate, so as to introduce the key to unlock and lock the lock.

The unlocking device can hide the keyhole of the lock, so that the keyhole cannot be directly touched or peeped at, so as to achieve a better anti-theft effect.

Description of drawings

Figure 1: A three-dimensional exploded schematic view of the present invention.

Fig. 2: a schematic cross-sectional view of the key inserted in the present invention.

Fig. 3: A schematic side sectional view of the key inserted in the present invention.

Fig. 4: A schematic cross-sectional view of the present invention performing an unlocking or locking action.

Fig. 5: A schematic side sectional view of the present invention performing an unlocking or locking action.

Description of main component symbols:

1 Shell 11 Accommodating space 12 Positioning hole 13 Positioning piece 2 Shifting body

21 Embedding space 22 Embedding hole 23 Opening hole 24 Limiting slot 25 Side wall

26 Positioning hole 27 Fixing element 28 Chute 3 Key guide seat 31 Inserting hole

32 Buckle hole 4 Linking rod 41 Knob 42 Connecting part 43 Card slot

44 Fixing element 5 Fixing block 51 Through hole 52 Accommodating part 53 Side groove

54 Positioning hole 55 Arc side wall 56 Plane side wall 6 Outer cover body 61 Hole

62 Limiting part 7 Key 71 Insert part 72 Tooth part 73 Locking part

8 lockset 81 key hole

Detailed ways

In order to make the above-mentioned and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments of the present invention are specifically cited below, together with the accompanying drawings, as follows:

Referring to FIG. 1 , the unlocking device of the present invention includes a housing 1 , a shifting body 2 , a key introduction seat 3 , a connecting rod 4 and a fixing block 5 .

The displacement body 2 is inserted into an accommodating space 11 of the housing 1 and has a specific rotation angle, the key introduction seat 3 is inserted into an insertion space 21 of the displacement body 2, and the key introduction seat 3 and The housing 1 is fixed as a whole by a positioning member 13 . The fixed block 5 is arranged on the displacement body 2, and the fixed block 5 has a through hole 51, which can be inserted by the connecting rod 4, and the key introduction seat 3 has an insertion hole 31 for Insert a key 7 . Therefore, when the shifting body 2 drives the fixed block 5 to rotate relative to the key introduction seat 3, it can drive a connecting portion 42 of the connecting rod 4 to engage with the key 7 correspondingly, and then use the connecting rod 4 to move axially. Make the tooth portion 72 of the key 7 stretch into the keyhole 81 of the lockset 8, and make the teeth of different depths on the tooth portion 72 make the pin balls in the lockset 81 correspond to each other, you can rotate the connecting rod 4 to Drive this key 7 to rotate simultaneously.

Referring to FIG. 1 , the housing 1 has an accommodating space 11 inside, and the accommodating space 11 is a circular hole passing through the housing 1 , so that the accommodating space 11 is formed with two openings on the surface of the housing 1 .

The displacement body 2 is rotatably inserted into the accommodation space 11 of the housing 1, and the displacement body 2 is a hollow cylinder, and the displacement body 2 has an embedded space 21 in the form of a blind hole. The embedding space 21 forms an embedding hole 22 on one end surface of the displacement body 2, and the other end surface of the displacement body 2 is provided with an opening 23, and the opening 23 is staggered from the center of the embedding space 21, namely There is an offset distance between the center of the opening 23 and the center of the embedding space 21 , and the offset distance is preferably greater than the radius of the opening 23 . In addition, the displacement body 2 is provided with a limiting groove 24 , and the limiting groove 24 penetrates the insertion space 21 and the outer surface along the circumferential direction of the displacement body 2 . Furthermore, a side wall 25 partially protrudes outward from the periphery of the insertion hole 22 of the displacement body 2 , and the side wall 25 is preferably half of the periphery of the insertion hole 22 .

The key introduction seat 3 is arranged in the embedding space 21 of the shift body 2, and the key introduction seat 3 is a cylinder, and the key introduction seat 3 has an insertion hole 31 passing through the two end surfaces of the key introduction seat 3, And one port of the insertion hole 31 is in a non-circular shape.

The fixing block 5 is disposed on the side wall 25 of the displacement body 2 , and the fixing block 5 preferably forms a semicircle corresponding to the side wall 25 , thus forming an arc side wall 55 and a plane side wall 56 . In addition, the fixed block 5 has a through hole 51 and a housing portion 52, the through hole 51 penetrates one end surface of the fixed block 5, the housing portion 52 penetrates the other end surface of the fixed block 5, and the accommodating The diameter of the receiving portion 52 is larger than that of the through hole 51 , and an arc-shaped side groove 53 is formed on the inner peripheral wall of the receiving portion 52 , and the side groove 53 communicates with the planar side wall 56 of the fixing block 5 .

The connecting rod 4 is a long rod body, one end of which can be assembled with a knob 41 by fixing elements such as a bolt or a screw, and the other end is formed with a connecting portion 42, which is formed corresponding to one end of the insertion hole 31 of the key introduction seat 3. In a non-circular shape, the maximum radial distance of the connecting portion 42 is greater than the outer diameter of the connecting rod 4 , and the diameter of the opening 23 of the displacement body 2 is greater than the maximum radial distance of the connecting portion 42 .

One end of the key 7 of the present invention can be inserted into the tooth portion 72 of the key hole 81 of the lockset 8, and a locking portion 73 is formed at the other end. 42, so that the key 7 is pushed or pulled out from the insertion hole 31, and the key 7 has an inlay portion 71, and the sectional surface of the inlay portion 71 is incompatible with the insertion hole 31 of the key introduction seat 3. The shape of the side port of perfect circle matches, so that the key 7 can only be inserted into the insertion hole 31 in a specific direction.

Referring to Figures 1, 2 and 3, when assembling the unlocking device of the present invention, the key introduction seat 3 is inserted into the embedding space 21 of the displacement body 2, and the displacement body 2 is inserted into the housing 1 space 11, and use a positioning piece 13 to pass through the positioning hole 12 of the shell 1, and at the same time pass through the limiting groove 24 of the shifting body 2 and be fixed in the locking hole 32 of the key introduction seat 3, because The width of the limiting slot 24 is slightly larger than the outer diameter of the positioning member 13 , so the shifting body 2 can rotate at a specific angle relative to the housing 1 and the key introduction seat 3 .

The connecting rod 4 passes through the through hole 51 of the fixing block 5 , and the connecting portion 42 is located in the accommodating portion 52 . The fixed block 5 is arranged on the inner side of the side wall 25 of the displacement body 2, so that the arc-shaped side wall 55 of the fixed block 5 abuts against the inner side of the side wall 25 of the displacement body 2, and the through hole of the fixed block 5 51 must be located on the same center line as the opening 23 of the displacement body 2, and be nailed into the positioning hole 26 of the displacement body 2 by using a fixing element 27, and be fixed in the positioning hole 54 of the fixing block 5, so that The fixing block 5 and the displacement body 2 are fixed as a whole.

With reference to shown in Figure 1, the side wall 25 of this displacement body 2 and the outside of fixed block 5 can additionally set up an outer cover body 6, and this outer cover body 6 is set on this side wall 25 and the outside of fixed block 5, and with this fixed block A hole 61 is provided at the position opposite to the through hole 51 of 5 . The outer cover body 6 is set on the side wall 25 and the outside of the fixed block 5, and the connecting rod 4 passes through the hole 61 of the outer cover body 6, and then the knob 41 is fixed on the connecting rod 4 passing through the hole 61. end, and the connecting rod 4 can utilize the locking function of the latch or the difference in size and diameter to make the outer cover body 6 and the connecting rod 4 act synchronously. And between the outer cover body 6 and the shifting body 2 , a limiting member 62 and a slide groove 28 can be correspondingly provided to assist in restricting the outer cover body 6 from moving relative to the shifting body 2 and the fixing block 5 in the axial direction.

Referring to Figures 1, 2 and 3, when using the unlocking device of the present invention, the unlocking device is mounted on the side of a lock 8, so that the insertion hole 31 of the key introduction seat 3 corresponds to the lock hole 81 of the lock 8 . And the unlocking device can be arranged on the side of the lockset 8 in any physical combination, for example: add a fixing part to the shell 1 for screwing, or another fixing seat is provided to fix the unlocking device; moreover, the present embodiment The unlocking device can be applied to various locks such as box locks, door locks, U-shaped locks and crutch locks.

With reference to Fig. 2 and shown in 3, when using unlocking device of the present invention to implement unlocking or locking action, first this key 7 is inserted in the insertion hole 31 of this key introduction seat 3, because this key 7 and this insertion hole 31 It is designed in a corresponding non-circular shape, so that the key 7 can only be inserted into the insertion hole 31 at a specific angle. At this time, the opening 23 of the shifting body 2 is misaligned with the inserting hole 31 of the key introduction seat 3, so the key 7 is blocked by the side end wall of the shifting body 2 and cannot be directly inserted into the lock 8 in the lock hole 81.

Referring to Figures 4 and 5, by pinching the knob 41 of the connecting rod 4 or the displacement body 2, the displacement body 2 is rotated by a specific angle relative to the housing 1 and the key introduction seat 3, at this time, the The side groove 53 on the fixed block 5 is also rotated to the locking part 73 of the key 7, and the connecting part 42 of the connecting rod 4 is fitted with the locking part 73. At the same time, the opening of the displacement body 2 23 is also rotated to coincide with the key hole 81 of the lockset 8 .

When the connecting portion 42 of the connecting rod 4 is engaged with the locking portion 73 of the key 7, as in this embodiment, the connecting portion 42 is set as a locking groove 43, and the locking groove 43, locking portion 73 and the aforementioned side groove 53 of the fixing block 5 are both arc-shaped and have the same radius of curvature. Since the locking groove 43, the locking portion 73 and the side groove 53 have the same center of curvature and are located on the same circular path, when the connecting portion 42 is located in the accommodating portion 52 of the fixed block 5, it can be rotated The latching portion 73 penetrates through the side slot 53 and engages with the latching slot 43 in such a manner.

Therefore, when the connecting rod 4 is moved toward the housing 1 by pushing the knob 41, the key 7 can pass through the opening 23, and the tooth portion 72 of the key 7 can be inserted into the key hole of the lockset 8. In 81, rotating the knob 41 at this time can drive the connecting rod 4 and the key 7 to rotate at the same time, so as to perform the action of unlocking or locking.

In summary, the unlocking device for hiding the keyhole of the present invention can not only introduce a key to unlock or lock the lock, but also hide the keyhole of the lock so that the keyhole cannot be directly touched or peeped at, so as to achieve better Anti-theft effect.

Claims (7)

1. An unlocking device for hiding a keyhole, characterized in that it comprises: A shell, arranged on one side of a lock, the shell has an accommodating space, the accommodating space forms two openings through the shell, and the key hole of the lock corresponds to the range of one of the openings; A displacement body is movably placed in the accommodating space of the housing. The displacement body has an embedding space in the shape of a blind hole. The embedding space forms an embedding hole on one end surface of the displacement body, and the The other end surface of the shifting body is provided with an opening, which is offset from the center of the embedding space by an offset distance, and can coincide with the key hole by means of the shifting action of the shifting body; A key introduction seat is movably inserted into the embedding space of the displacement body, the key introduction seat has an insertion hole, and a key is inserted into the insertion hole; A fixed block, fixed at the port of the insertion hole of the displacement body, the fixed block has a through hole and a receiving part connected thereto, and the center line of the through hole and the receiving part is the same as the center line of the opening; and A connecting rod is provided through the through hole and the receiving part of the fixed block, and one end of the connecting rod can be rotated, and the other end is provided with a connecting part, the connecting part is located in the receiving part, and fits and drives the Key movement and turning; Wherein, the diameter of the insertion hole of the key introduction seat is greater than the maximum radial distance of the connecting part of the connecting rod, the shell and the key introduction seat are connected and fixed by a positioning piece, and the shifting body is provided with a shape corresponding to the positioning piece. A limiting groove runs through in the circumferential direction, and the limiting groove limits the rotation of the displacement body relative to the shell and the key introduction seat within a limited angle. 2 . The unlocking device for concealing a keyhole according to claim 1 , wherein the offset distance is greater than the radius of the opening. 3 . 3 . The unlocking device for concealing a keyhole according to claim 1 , characterized in that: a rotating end of the connecting rod is combined with a knob, and the outer diameter of the connecting part of the connecting rod is larger than the diameter of the through hole of the fixing block. 4 . 4. The unlocking device for concealing a keyhole according to claim 1, characterized in that, the connecting portion between the accommodating portion of the fixed block and the connecting rod is provided with a corresponding side slot and a card slot, and the side slot and the card slot For key insertion and combination. 5. The unlocking device for concealing a keyhole according to claim 4, wherein the key has a locking part embedded in the locking slot, and the side slot, locking slot and locking part are all in the shape of a curved arc, and have the same radius of curvature. 6. The unlocking device for concealing a keyhole according to claim 1, wherein one end of the insertion hole of the key introduction seat is in a non-circular shape, the key has an insert, and the cross section of the insert is A non-circular shape matched with one end of the insertion hole is formed. 7. The unlocking device for hiding the keyhole according to claim 1, characterized in that the unlocking device further comprises an outer cover, the outer cover is arranged outside the fixed block, and a hole is provided for the connecting rod to pass through, And the outer cover body and the connecting rod act synchronously.

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