Padlock to prevent accidental unlocking

Abstract

The invention discloses a padlock capable of preventing accidental unlocking, comprising: a shell body, a first lock hole and a second lock hole are arranged on the shell body; a hook, a first end of the hook can be inserted into the first lock hole, a second end of the hook can be inserted into the second lock hole, and a card slot is arranged on the hook; a lock tongue, a card strip is arranged on the lock tongue, and the lock tongue can move relative to the shell body; a first elastic element, under the action of the first elastic element, one end of the lock tongue can be embedded in the card slot; a switch assembly, the switch assembly comprises a driving element, a cam, a block and a second elastic element, the second elastic element can give the block an elastic force close to the cam, the driving element can drive the cam to rotate, the first contour surface can abut against the block, so that the protrusion and the card strip away from the card slot are separated from the abutment, and the second contour surface can abut against the card strip, so that the lock tongue is separated from the card slot. The invention can prevent the padlock from being accidentally opened when it is hit.

Description

Technical Field

[0001] The invention relates to the field of padlocks, and in particular to a padlock capable of preventing accidental unlocking. Background Art

[0002] At present, the padlock uses the elasticity of the spring to support the lock tongue, and the lock tongue clamps the hook, so as to achieve the locking effect. However, when the padlock is hit, the lock tongue will slide relative to the shell under the action of inertia. When the lock tongue slides to a certain distance, the lock tongue is separated from the hook and the padlock is opened. Therefore, the existing padlock has certain safety hazards and needs to be improved. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a padlock capable of preventing accidental unlocking, which can prevent the padlock from being accidentally opened when it is hit while ensuring that the padlock can be used normally.

[0004] In a first aspect, an embodiment of the present invention provides a padlock that can prevent accidental unlocking, comprising: a shell body, the shell body is provided with a first lock hole and a second lock hole; a hook, the first end of the hook can be inserted into the first lock hole, the second end of the hook can be inserted into the second lock hole, and the hook is provided with a card slot; a lock tongue, the lock tongue is provided with a card strip, and the lock tongue can move relative to the shell body; a first elastic element, under the action of the first elastic element, one end of the lock tongue can be embedded in the card slot; a switch component, the switch component It includes a driving element, a cam, a block and a second elastic element, wherein the block is provided with a protrusion, and the protrusion can abut against the side of the card strip away from the card slot, and the second elastic element can give the block an elastic force close to the cam, and the driving element can drive the cam to rotate, and the cam is provided with a first contour surface and a second contour surface, the first contour surface can abut against the block, so that the protrusion is disengaged from the abutment with the side of the card strip away from the card slot, and the second contour surface can abut against the card strip, so that the lock tongue is disengaged from the card slot.

[0005] The padlock that can prevent accidental unlocking of the embodiment of the present invention has at least the following beneficial effects: by adding a stopper, a protrusion is provided on the stopper, and the protrusion can abut against the card strip on the lock tongue, so that when the lock tongue is embedded in the card slot of the hook, the protrusion abuts against the side of the card strip away from the card slot, and the lock tongue cannot move relative to the shell body, thereby locking the hook, and when the padlock is hit, the hook will not be separated from the shell body; at the same time, in order to ensure that the padlock can be opened normally, a first contour surface and a second contour surface are provided on the cam, and the first contour surface can abut against the stopper, so that the protrusion and the side of the card strip away from the card slot are disengaged, thereby realizing unlocking of the lock tongue, and the second contour surface can abut against the card strip, so that the lock tongue is separated from the card slot of the hook, thereby opening the hook.

[0006] In the padlock capable of preventing accidental unlocking according to other embodiments of the present invention, both the first contour surface and the second contour surface are components of an outer circumferential surface of the cam.

[0007] In the padlock capable of preventing accidental unlocking according to other embodiments of the present invention, the cam includes a first cam and a second cam, the first contour surface is arranged on the first cam, and the second contour surface is arranged on the second cam.

[0008] According to some other embodiments of the padlock that can prevent accidental unlocking of the present invention, the second elastic element is a second compression spring, one end of the second compression spring abuts against the shell body, and the other end of the second compression spring abuts against a side of the block facing away from the protrusion.

[0009] In the padlock capable of preventing accidental unlocking according to other embodiments of the present invention, one end of the stopper is rotatably connected to the shell body, and the second compression spring and the cam are respectively arranged on two opposite sides of the stopper.

[0010] According to some other embodiments of the present invention, the padlock capable of preventing accidental unlocking further comprises a third elastic element, wherein the third elastic element can provide an elastic force for the hook to separate from the first lock hole.

[0011] According to some other embodiments of the present invention, the padlock that can prevent accidental unlocking further includes a limit screw, which is fixed to the shell body, and a limit slot is axially arranged at the first end of the hook, and the limit screw can abut against the side wall of one end of the limit slot.

[0012] According to some other embodiments of the padlock that can prevent accidental unlocking of the present invention, an annular groove is circumferentially provided on the first end of the hook, the annular groove is connected to the limiting groove, and the limiting screw can abut against the side wall of one side of the annular groove.

[0013] According to some other embodiments of the present invention, the padlock capable of preventing accidental unlocking further includes a rechargeable battery. The driving element is a motor, and the rechargeable battery can supply power to the motor.

[0014] According to other embodiments of the present invention, the padlock capable of preventing accidental unlocking further includes a USB interface, wherein the USB interface is electrically connected to the rechargeable battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an exploded view of some parts of the padlock of the first embodiment;

[0016] Figure 2 is an exploded view of another part of the padlock of the first embodiment;

[0017] Figure 3 is a front view of the interior of the padlock of the first embodiment;

[0018] Figure 4 yes Figure 3 Sectional view along section AA;

[0019] Figure 5 is a front view of the interior of the padlock of the second embodiment;

[0020] Figure 6 is a front view of the interior of the padlock of the third embodiment;

[0021] Figure 7 yes Figure 6 A cross-sectional view along section BB;

[0022] Figure 8 is a front view of the interior of the padlock of the fourth embodiment;

[0023] Fig. 9 is a front view of the interior of the padlock of the fifth embodiment;

[0024] Fig.10 is an exploded view of some parts of the padlock of the fifth embodiment;

[0025] Fig.11 1 is a front view of the interior of the padlock of the sixth embodiment. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments to clearly and completely describe the concept of the present invention and the technical effects produced, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0027] In the description of the embodiments of the present invention, if orientation descriptions are involved, the orientations or positional relationships indicated by “up”, “down”, “front”, “back”, “left”, “right”, etc. are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of the embodiments of the present invention, if a feature is referred to as being "set", "fixed", "connected", or "installed" on another feature, it may be directly set, fixed, or connected to the other feature, or it may be indirectly set, fixed, connected, or installed on the other feature. In the description of the embodiments of the present invention, if "several" is involved, it means more than one, if "multiple" is involved, it means more than two, if "greater than", "less than", or "exceeds" is involved, it should be understood as not including the number itself, and if "above", "below", or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] First embodiment

[0030] Reference Figure 1 middle Figure 4 , Figure 1 is an exploded view of some parts of the padlock 100 of the first embodiment, Figure 2 FIG. 1 is an exploded view of another part of the padlock 100 of the first embodiment. Figure 3 is a front view of the interior of the padlock 100 of the first embodiment, Figure 4 yes Figure 3 The padlock 100 of the first embodiment includes a hook 110, a lock tongue 120, a switch assembly 130, a first elastic element 140, a third elastic element 150, a fingerprint recognition module 160, a circuit board 170, a rechargeable battery 180 and a housing 190. The housing 190 includes a pin 191, a housing body 192, a fixing plate 193, a lining plate 194, a cover plate 195 and a stop screw 196. The left side of the upper end of the housing body 192 is provided with a first lock hole 411 (see Figure 1 ), a second locking hole 422 is provided on the right side of the upper end of the housing body 192 (refer to Figure 1), the hook 110 is in a "U" shape as a whole, and the first end of the hook 110 (the left end of the hook 110 is the first end) can be inserted into the first locking hole 411. At the same time, the second end of the hook 110 (the right end of the hook 110 is the second end) can be inserted into the second locking hole 422, thereby allowing the hook 110 and the shell body 192 to form a closed loop.

[0031] In order to lock the padlock, a lock tongue 120 and a first elastic element 140 are provided, a card slot 111 is provided on the first end of the hook 110, and a slide slot 413 is provided on the shell body 192. The lock tongue 120 is placed in the slide slot 413, so that the lock tongue 120 can slide in the left and right directions relative to the shell body 192. Under the action of the first elastic element 140, after the lock tongue 120 slides to the left relative to the shell body 192, the left end of the lock tongue 120 can be embedded in the card slot 111, so that the first end of the lock tongue 120 cannot be separated from the first lock hole 411, thereby realizing the locking function.

[0032] In this embodiment, the first elastic element 140 is a first compression spring, which is also placed in the slide groove 413. A positioning column 122 is provided at the right end of the lock tongue 120, and the left end of the first compression spring is sleeved on the positioning column 122, thereby preventing the first compression spring from falling off. The left end of the first compression spring abuts against the lock tongue 120, and the right end of the first compression spring abuts against the right end surface of the slide groove 413, thereby the first compression spring gives the lock tongue 120 a leftward elastic force, and the lock tongue 120 can slide to the left relative to the shell body 192.

[0033] In another embodiment, the first elastic element 140 may also be a bellows. The configuration of the bellows is the same as that of the first compression spring. The bellows may also give the locking tongue 120 a leftward elastic force.

[0034] In order to unlock the padlock, a switch assembly 130 is provided. The switch assembly 130 includes a driving element 131, a cam 132, a first screw 133, a stopper 134 and a second elastic element 135. The cam 132 is fixed to the output end of the driving element 131. The driving element 131 can drive the cam 132 to rotate, and the cam 132 abuts against the left end of the stopper 134.

[0035] The first contour surface 136 and the second contour surface 137 are arranged on the same outer circumferential surface of the cam 132. A clamping strip 121 is arranged on the lower side surface of the lock tongue 120. The clamping strip 121 is located on the right side of the cam 132. Under the action of the driving element 131, the cam 132 rotates, and the first contour surface 136 can contact and resist with the clamping strip 121, thereby pushing the lock tongue 120 to move rightward, and the left end of the lock tongue 120 is separated from the clamping slot 111, so that the padlock is unlocked.

[0036] In this embodiment, the driving element 131 is a motor, and the cam 132 is fixed on the rotating shaft of the motor.

[0037] In another embodiment, the driving element 131 may also be a rotary cylinder, and the cam 132 is fixed on the rotating shaft of the rotary cylinder.

[0038] To prevent the padlock from being hit, the lock tongue 120 overcomes the elastic force of the first elastic element 140 under the action of inertia and moves to the right, the left end of the lock tongue 120 disengages from the slot 111, and the padlock is accidentally unlocked. A positioning hole 138 is provided at the right end of the block 134, and the right end of the block 134 is set on the shell body 192 by a first screw 133 passing through the positioning hole 138. The inner diameter of the positioning hole 138 is larger than the major diameter of the thread of the first screw 133, so that the block 134 can rotate around the axis in the up and down directions, and the cam 132 and the second elastic element 135 are respectively arranged on both sides of the block 134, and the second elastic element 135 gives the block 134 an elastic force close to the cam 132.

[0039] A protrusion 138 is provided on the front side surface of the stopper 134, and the protrusion 138 is located on the right side of the clamping strip 121. When the left end of the lock tongue 120 is placed in the clamping groove 111, the protrusion 138 abuts against the clamping strip 121, so that the lock tongue 120 cannot move rightward relative to the shell body 192, and the left end of the lock tongue 120 cannot be separated from the clamping groove 111. At this time, even if the padlock is hit, the lock tongue 120 can clamp the hook 110 to prevent the padlock from being accidentally unlocked.

[0040] To ensure that the padlock can be unlocked normally, a second contour surface 137 is provided on the cam 132. Before the first contour surface 136 contacts the card strip 121, the second contour surface 137 first contacts and abuts against the left end of the block 134. The second contour surface 137 drives the left end of the block 134 to move backward, and the protrusion 138 disengages from the right side of the card strip 121. The lock tongue 120 can move rightward relative to the shell body 192. After the first contour surface 136 contacts the card strip 121, the left end of the lock tongue 120 disengages from the card slot 111, thereby unlocking the padlock.

[0041] In this embodiment, the second elastic element 135 is a second compression spring, the rear end of the second compression spring abuts against the shell body 192, and the front end of the second compression spring abuts against the rear side of the stopper 134, thereby the second compression spring gives the stopper 134 a forward elastic force.

[0042] Similar to the first elastic element 140 , in another embodiment, the second elastic element 135 may also be a bellows. The configuration of the bellows is consistent with that of the second compression spring. The bellows may also give the stopper 134 a forward elastic force.

[0043] In order to enable the hook 110 to automatically pop out from the first lock hole 411 when the hook 110 and the lock tongue 120 are disengaged from each other, a third elastic element 150 is provided. The third elastic element 150 gives an upward elastic force to the first end of the hook 110. Under the action of the third elastic element 150, the hook 110 can move upward and pop out automatically.

[0044] In this embodiment, the third elastic element 150 is a third compression spring, the lower end of the third compression spring abuts against the shell body 192, and the upper end of the third compression spring abuts against the first end of the hook 110, thereby giving the first end of the hook 110 an upward elastic force.

[0045] In another embodiment, the third elastic element 150 may also be a bellows.

[0046] In order to prevent the first end of the hook 110 from completely detaching from the shell body 192 when it pops out from the first locking hole 411, a limiting screw 196 is provided, and the fixing plate 193 is locked and fixed on the shell body 192. The fixing plate 193 is provided with a threaded hole, and the limiting screw 196 is threadedly matched with the threaded hole, and the rear end of the limiting screw 196 passes through the threaded hole. A limiting groove 112 is provided on the hook 110, and the limiting groove 112 is arranged along the up and down direction (i.e., the axial direction of the first end of the hook 110), and the rear end of the limiting screw 196 is placed in the limiting groove 112. When the first end of the hook 110 pops out from the first locking hole 411, the rear end of the limiting screw 196 abuts against the side wall of the lower end of the limiting groove 112, thereby preventing the hook 110 from completely detaching from the shell body 192.

[0047] In order to ensure that the second end of the hook 110 has a larger distance from the shell body 192 when unlocking, so as to facilitate the removal of the padlock from the door handle, the first end of the hook 110 is circumferentially provided with an annular groove 113, which is connected to the limiting groove 112. When the rear end of the limiting screw 196 abuts against the side wall of the lower end of the limiting groove 112, the hook 110 is rotated around the axis of the first end of the hook 110, the rear end of the limiting screw 196 will enter the annular groove 113, and the second end of the hook 110 can gradually move away from the shell body 192, thereby facilitating the removal of the padlock.

[0048] To power the motor, a rechargeable battery 180 is provided, and the rechargeable battery 180 can be electrically connected to the motor, thereby driving the motor's shaft to rotate. To enable the motor to obtain unlocking information, a fingerprint recognition module 160 and a circuit board 170 are provided. When the fingerprint recognition module 160 recognizes the correct fingerprint, the motor's working circuit connected by the circuit board 170 rotates the motor, thereby unlocking the door. The fingerprint recognition module 160 can use a capacitive fingerprint module FS200P-R.

[0049] In order to achieve the connection and fixation between the shell body 192 and the cover plate 195, and at the same time fix the lining plate 194 between the fixing plate 193 and the cover plate 195, a protruding column 198 is provided on the rear side surface of the cover plate 195, and a clamping hole 197 is provided on the protruding column 198 along the up and down directions. The protruding column 198 is provided at two locations, and correspondingly, two pins 191 are provided. After the pin 191 passes through the through hole located on the shell body 192, it is interference fit with the clamping hole 197, thereby fixing the cover plate 195 on the shell body 192.

[0050] Second embodiment

[0051] Reference Figure 5 , Figure 5 1 is a front view of the interior of the padlock of the second embodiment. The padlock of the second embodiment is similar to the padlock 100 of the first embodiment, except that the slot 111 is provided at the right end of the hook 110, and the lock tongue 120 is stuck on or detached from the right end of the hook 110, thereby realizing locking or unlocking of the padlock.

[0052] The card slot 111 is arranged at the right end of the hook 110, and can also realize locking or unlocking of the padlock.

[0053] Third embodiment

[0054] Reference Figure 6 and Figure 7 , Figure 6 is a front view of the interior of the padlock 200 of the third embodiment, Figure 7 yes Figure 6 The difference from the padlock 100 of the first embodiment of the present invention is that the rotation connection method of the stopper 233 and the shell body 292 is different. Specifically, a support column 414 is provided at the left end of the stopper 233, and a first accommodating hole is correspondingly provided on the shell body 292. The support column 414 is placed in the first accommodating hole, and the support column 414 is in clearance with the first accommodating hole, so that the stopper 233 can rotate relative to the shell body 292 around the axis in the up-down direction.

[0055] The front side surface of the block 233 abuts against the cam 232, and the lower side surface of the right end of the block 233 abuts against the second elastic element 235. The second elastic element 235 gives the block 233 a forward elastic force. A pressure plate 415 is locked and fixed on the shell body 292. Under the action of the second elastic element 235, the upper side surface of the right end of the block 233 can abut against the pressure plate 415. At this time, the protrusion 238 on the upper side surface of the right end of the block 233 passes through the pressure plate 415 and can abut against the clamping strip 221. When the second contour surface 237 of the cam 232 abuts against the block 233, the protrusion 238 moves backward, and the protrusion 238 no longer abuts against the clamping strip 221, and the padlock 200 can be unlocked normally.

[0056] Fourth embodiment

[0057] Reference Figure 8 , Figure 8 1 is a front view of the interior of the padlock of the fourth embodiment. The padlock of the fourth embodiment is similar to the padlock 200 of the third embodiment, except that the slot 111 is provided at the right end of the hook 210, and the lock tongue 220 is stuck on or detached from the right end of the hook 210, thereby realizing locking or unlocking of the padlock.

[0058] The card slot 111 is arranged at the right end of the hook 210, and can also realize locking or unlocking of the padlock.

[0059] Fifth embodiment

[0060] Reference Fig. 9 and Fig.10 , Fig. 9 is a front view of the interior of the padlock 300 of the fifth embodiment, Fig.10 yes

[0061] The exploded view of some parts of the padlock 300 of the fifth embodiment is different from the padlock 100 of the first embodiment of the present invention in that the cam 332 includes a first cam 416 and a second cam 417, the first contour surface 336 is arranged on the first cam 416, and the second contour surface 337 is arranged on the second cam 417, and correspondingly, a contact column 419 is additionally arranged on the stopper 333.

[0062] The rear end of the block 333 abuts against the second elastic element 334, and the end of the second elastic element 334 away from the block 333 abuts against the shell body 292. The second elastic element 334 gives the block 333 a forward elastic force, and the locking plate 418 is locked and fixed on the shell body 392. Under the action of the second elastic element 334, the front end of the block 333 abuts against the locking plate 418, and the block 333 is set in the guide groove of the shell body 392. The block 333 can only slide in the guide groove along the front and rear directions.

[0063] Therefore, through the contact and abutment between the second contour surface 337 and the contact column 419 , the contact column 419 drives the protrusion 338 to move backward, the protrusion 338 is disengaged from the locking strip 321 , and the padlock 200 can be unlocked normally.

[0064] Sixth embodiment

[0065] Reference Fig.11 , Fig.11 1 is a front view of the interior of the padlock of the sixth embodiment. The padlock of the sixth embodiment is similar to the padlock 300 of the fifth embodiment, except that the slot 111 is provided at the right end of the hook 310, and the lock tongue 320 is stuck in or disengaged from the right end of the hook 310, thereby realizing locking or unlocking of the padlock.

[0066] The card slot 111 is arranged at the right end of the hook 310, and can also realize locking or unlocking of the padlock.

[0067] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A padlock capable of preventing accidental unlocking, characterized in that: include: A shell body, wherein the shell body is provided with a first locking hole and a second locking hole; A hook, wherein a first end of the hook can be inserted into the first lock hole, a second end of the hook can be inserted into the second lock hole, and a card slot is provided on the hook; A lock tongue, on which a clamping strip is arranged, and the lock tongue can move relative to the housing body; a first elastic element, under the action of which one end of the locking tongue can be embedded in the card slot; A switch assembly, the switch assembly comprising a driving element, a cam, a block and a second elastic element, the block being provided with a protrusion, the protrusion being able to abut against a side of the card strip away from the card slot, the second elastic element being able to give the block an elastic force approaching the cam, the driving element being able to drive the cam to rotate, the cam being provided with a first contour surface and a second contour surface, the first contour surface being able to abut against the block, thereby causing the protrusion to disengage from abutment against a side of the card strip away from the card slot, and the second contour surface being able to abut against the card strip, thereby causing the lock tongue to disengage from the card slot.

2. The padlock capable of preventing accidental unlocking according to claim 1, characterized in that: The first contour surface and the second contour surface are both components of an outer circumferential surface of the cam.

3. The padlock capable of preventing accidental unlocking according to claim 1, characterized in that: The cam includes a first cam and a second cam, the first contour surface is arranged on the first cam, and the second contour surface is arranged on the second cam.

4. The padlock capable of preventing accidental unlocking according to claim 1, characterized in that: The second elastic element is a second compression spring, one end of the second compression spring abuts against the shell body, and the other end of the second compression spring abuts against a surface of the stopper away from the protrusion.

5. The padlock capable of preventing accidental unlocking according to claim 4, characterized in that: One end of the stopper is rotatably connected to the shell body, and the second compression spring and the cam are respectively arranged on two opposite sides of the stopper.

6. The padlock capable of preventing accidental unlocking according to claim 1, characterized in that: It also includes a third elastic element, which can provide elastic force for the hook to disengage from the first locking hole.

7. The padlock capable of preventing accidental unlocking according to claim 6, characterized in that: It also includes a limiting screw, which is fixed on the shell body. The first end of the hook is axially provided with a limiting groove, and the limiting screw can abut against the side wall of one end of the limiting groove.

8. The padlock capable of preventing accidental unlocking according to claim 7, characterized in that: An annular groove is circumferentially arranged at the first end of the hook, the annular groove is communicated with the limiting groove, and the limiting screw can abut against a side wall of one side of the annular groove.

9. The padlock capable of preventing accidental unlocking according to claim 1, characterized in that: A rechargeable battery is also included. The driving element is a motor, and the rechargeable battery can supply power to the motor.

10. The padlock capable of preventing accidental unlocking according to claim 9, characterized in that: A USB interface is also included, and the USB interface is electrically connected to the rechargeable battery.

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