Mechanical digital lock

Abstract

The invention relates to a mechanical digital lock for a coded lock. The mechanical digital lock mainly comprises a lock body, a number wheel and a lock beam. The number wheel comprises an outer wheel and an inner wheel for containing numbers. The mechanical digital lock is designed to have no opening on the lock body.

Description

Technical Field

[0001] The present invention relates to a mechanical digital lock that can be opened by a password set by a user. The mechanical digital lock is designed to prevent code detection to increase safety during use. The mechanical digital lock is used to design a padlock or a rope lock to lock a door or protect assets. Background Art

[0002] As we all know, there are many and common types of digital locks on the market, such as door locks, rope locks, suitcase locks, etc. Digital locks are very convenient because they do not require keys, and their reliability and security vary from brand to brand because each brand has different production standards.

[0003] Digital locks usually consist of a cylindrical ring with a convex position on the outside, which rotates freely around the lock core and is controlled by the outer number wheel and the inner gear ring to rotate around the lock beam. When the convex position of the lock core rotates to a straight line with the position of the fixed groove on the lock body, the lock can be opened. In this way, as long as the convex position of the lock core is turned into a straight line and all the rings rotate evenly, the lock can be opened regardless of the combination. In this case, the gap between the dial and the lock body can be found with a suitable object to align the convex position of the lock core with any position, and then the lock can be opened by performing the above operation (1).

[0004] Alternatively, another method can be used, such as pulling the lock with enough force so that the number wheel can still rotate. When exploring the rotating number wheel, there will be some positions that are more difficult to rotate than others because the protrusions at these positions press into the grooves of the lock body and block the column. This is the location of the unlocking code. This method is based on feeling and experience, so it is usually only done by locksmiths or trained people (2).

[0005] Another point is that for hook-type digital locks, the lock hook does not insert deeply into the lock hole when locking, which reduces the reliability during use (3).

[0006] Therefore, the mechanical digital lock must meet the requirements of preventing the lock from being opened by external objects according to point (1), preventing the password from being explored according to point (2), and the lock hook being deeply inserted into the keyhole when locking.

[0007] Furthermore, the lock introduced below uses a coaxial number wheel structure, which fits tightly together so the assembly operation is very smooth, accurate and highly confidential. Summary of the invention

[0008] The invention mentions that the mechanical digital lock can be used to produce a mechanical lock that is opened using a password set by the user. The invention does not allow external objects to interfere with the detection of the internal structure of the lock to unlock or manually detect the code, except for destructive methods such as sawing, cutting, and smashing. The purpose of the invention is to provide a lock that has high security and reliability when used to protect things or assets.

[0009] The invention for achieving the above purpose includes: a lock body drilled and grooved to accommodate a lock beam and a number wheel; the lock beam has pins and suitable holes; the number wheel consists of an inner wheel and an outer wheel, the inner wheel has a through groove for the pins of the lock beam to slide through and a gear-shaped protrusion for the pins of the lock beam to engage to prevent free rotation. The outer wheel is engraved with numbers or characters to set the unlocking code, and the inner and outer wheels can be moved separately or simultaneously through the connection of the in-and-out moving pins. The lock body is also provided with horizontally arranged holes at the number wheel to install springs and latches against the number wheel to produce a hand feel and keep the number wheel in position when rotating. The lock beam hole is installed with a spring, which is compressed when locked and springs up to make the lock hook pop out when opened, producing an automatic feeling. A sealing ring is provided on the upper part to embrace the lock beam body. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention can be more fully understood through the detailed description based on the accompanying drawings, in which:

[0011] Figure 1 It is a perspective view of a digital lock according to the present invention.

[0012] Figure 2 It is a cross-sectional view of a digital lock according to the present invention.

[0013] Figure 3 It is a perspective view of a digital lock body according to the solution of the present invention.

[0014] Figure 4 It is a perspective view of a digital lock hook according to the solution of the present invention.

[0015] Figure 5a It is a perspective view showing the inner wheel of a digital lock according to the solution of the present invention.

[0016] Figure 5b It is a perspective view showing the following of the inner wheel of a digital lock according to the solution of the present invention.

[0017] Figure 6 It is a perspective view of the outer wheel of a digital lock according to the present invention.

[0018] Figure 7 It is a schematic diagram of the latches of the inner and outer wheels of a digital lock according to the solution of the present invention.

[0019] Figure 8a It is a drawing showing a cross section of a number wheel when a bolt slides into a hole on a digital lock hook body according to the solution of the present invention.

[0020] Figure 8b It is a drawing showing the cross section of the number wheel when the bolt slides into the outer wheel hole of the digital lock according to the solution of the present invention.

[0021] Fig. 9 It is a detailed drawing showing the longitudinal section when the pin head is fixed in the hole on the lock beam body. DETAILED DESCRIPTION

[0022] The invention can be expressed in many different ways without departing from the scope and nature of the invention. Therefore, the various schemes of the invention are only examples and should not be understood as being limited in all terms. The scope of the invention is best defined by the attached claims.

[0023] Exemplary aspects of the present invention will be described in detail below with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

[0024] like Figure 1 As shown, the present invention comprises: a lock body 10, a lock hook 11, a number wheel 12, and a cover 13. According to one embodiment of the present invention, the cover 13 has a cylindrical cap that seals the lock hook 11 so that the lock hook can move smoothly. Its purpose is to seal the lock hole 20 after the number wheel is installed and to limit the movement of the lock hook 11 through the pin 30. The cover 13 is fixedly installed and does not allow rotation or easy opening. Unlike other locks, the cover 13 has no slot on the lock body, so it cannot be observed by external objects to explore the unlocking method.

[0025] Lock body 10 Figure 2 The cross section and Figure 3 The perspective view of FIG. 2 shows in detail that, like other combination locks, it includes a spring slot and springs 23 and 33. The spring 23 has the function of maintaining and generating a hand feeling when rotating the number wheels 12 and 14, and the spring 33 in the lock cylinder 21 has the function of unlocking, generating an automatic feeling when using the lock and always pressing the pin 30 against the slot 45, that is, in the locked state, the number wheels 12 and 14 cannot rotate freely. If they want to rotate, they must press the lock hook 11 to make the pin 30 at the bottom close to the collar 24, and here, the number wheels 12 and 14 rotate around the lock beam. The round hole 20 for accommodating the lock beam 11 and the slot for accommodating the number wheels 12 and 14 are drilled on the lock body. Unlike other combination locks, there is no fixed groove in the round hole 20 for the pin to slide in the groove when opening. According to the scheme of the present invention, these grooves are set on the number wheel 14, and the position of the grooves also changes when these wheels are rotated, which increases the difficulty of finding a way to unlock. According to the solution of the present invention, the lock hook 11 is also deeply immersed in the lock hole to ensure the safety of the lock. The depth of the lock in the market is very shallow, which reduces the safety of the lock.

[0026] The lock beam 11 is different from other combination locks in that it includes a pin or lug 30, a hole 31 and a hole 32, and the hole 32 accommodates a spring 33. The number of pins 30 and holes 31 is equal to the number of number wheels 12, 14. In the locked state, the pin 30 is located in the groove 45 of the inner wheel 14, and in the open state, the pin 30 is located above the surface of the inner wheel 14.

[0027] The outer surface of the number wheel is divided into multiple parts 40 to engrave numbers, letters, or symbols. Small grooves 42 separate the parts 40 and are recessed so that the spring 23 pushes the latch to fix the position of the wheel every time it rotates. The groove 41 is used to fix the pin head 15.

[0028] According to the solution of the present invention, in the locked state, the number wheels 12 and 14 are fixed and rotate together, because at this time, one end of the latch 15 is close to the lock beam 11, and the other end is located in the groove 41, that is, the number wheel 12 and the number wheel 14 are fixed together by the latch 15. Figure 8b As shown in the cross section. In the locked state, the rotation of the number wheel 12 and the number wheel 14 causes the groove 46 to deviate from the position of the pin 30. Under the action of the spring 33, the lock beam 11 is pushed up so that the pin 30 is always fixed in the groove 45 of the number wheel 14, and finally the wheels 12 and 14 cannot rotate. This is the difference of the present invention, and its purpose is to prevent the attempt to unlock according to the above point 2.

[0029] When unlocking, press the lock beam 11, and the pin at the bottom presses the side of the collar 24 of the lock body 10 so that the pin 30 slides out of the groove 45 of the wheel 14, and then rotate the number wheels 12 and 14 according to the set password so that the groove 46 and the pin 30 of the lock beam 11 are in a straight line. Release, release the lock beam 11, and under the action of the spring thrust, the lock beam will automatically pop out and unlock. When unlocking, the pin 30 at the top of the lock beam 11 is close to the lower side of the cover 13.

[0030] When you want to change the password, in the unlocked state, rotate the lock beam 11 to a predetermined position on the lock surface, press the lock beam 11 to position the pin 30 in the groove 43 of the number wheel 14, and fix the lock beam 11 and the number wheel 14 at the same time. At this time, the latch 15 is in the hole 31 on the lock beam 11, as shown in the details. Figure 8a As shown in the cross section of FIG. 1 . According to the structure of the present invention, when the number wheel 12 is rotated, under the action of the groove 41, the latch 15 slides into the hole 31 to release the number wheel 12. At this time, the number wheel 12 can be rotated around the number wheel 14. We rotate the number wheel 12 to select a new password. After selecting a new password, the lock beam 11 is released, and the lock beam will pop out under the thrust of the spring 33. According to the structure, the hole 31 on the lock beam 11 affects the pin head 15 (such as Fig. 9 ), the latch 15 is slipped into the groove 41 on the number wheel 12, and the number wheels 12 and 14 are fixed together at the new password position. In this way, the password can be changed.

[0031] Although the present invention has been shown in the preferred embodiments and the accompanying drawings to illustrate the scope of the embodiments, the present invention is not limited thereto. On the contrary, the present invention includes many changes and modifications that can be made by a person of ordinary skill in the art. Therefore, the scope of the present invention is determined by the rights protection requirements.

Claims

1. Mechanical digital lock includes: A locking beam (11), the locking beam (11) comprising a hole (31) and a pin (30); A number outer wheel (12), the number outer wheel (12) comprising a groove (41); The number inner wheel (14) comprises a groove (43), a groove (45), a groove (46) and a hole (44).

2. The mechanical digital lock according to claim 1, wherein the lock beam (11) has a hole (31) which can be positioned at any angle relative to the pin (30).

3. The mechanical digital lock according to claim 1, wherein the number outer wheel (12) includes a groove (41) punched partially or completely on the number outer wheel (12).

4. The mechanical digital lock according to claim 3, wherein the groove (41) of the number outer wheel (12) has a V-shaped cross section or a C-shaped cross section.

5. The mechanical digital lock according to claim 1, wherein the angle between the groove (43) and the hole (44) on the number inner wheel (14) is set to be equal to the angle between the hole (31) and the pin (30).

Images