CN218844014U - Anti-theft coded lock for trailer - Google Patents

Abstract

The utility model relates to a trailer lock technical field, in particular to trailer theftproof trick lock, include: the lock device comprises a base, a lock rod and a password locking mechanism, wherein the base is provided with a spherical lock head suitable for corresponding to a spherical cover hook, the spherical cover hook is arranged between the lock rod and the spherical lock head when in use, the lock rod is installed on the base in a sliding manner, so that the lock rod is close to or far away from the spherical lock head to lock or unlock the spherical cover hook, the password locking mechanism has a locking state and an unlocking state, and when the password locking mechanism is in the locking state, the lock rod is locked by the password locking mechanism so as not to slide; when the lock rod is in the unlocking state, the code locking mechanism releases the lock of the lock rod so that the lock rod can be pushed by external force. The anti-theft coded lock for the trailer can lock the ball cover hook, and avoids the trailer from being dragged away by others to cause theft; the lock can be unlocked and locked by the correct password set by the user, so that the inconvenience caused by forgetting to bring the key or losing the key is avoided.

Description

Anti-theft coded lock for trailer

Technical Field

The utility model relates to a trailer lock technical field, in particular to trailer theftproof trick lock.

Background

The existing one-side trailer (such as a trailer type motor home) has no power, and needs to be towed by an additional front tractor. The rear end of the front tractor is provided with a tractor rod, a connecting ball head is arranged on the tractor rod, and the front end of the trailer is provided with a ball cover hook corresponding to the connecting ball head. When the trailer is towed, the connecting ball head is clamped into the ball cover hook so as to connect the front tractor with the trailer; after the traction is finished, the connecting ball head is separated from the ball cover hook, so that the front tractor is separated from the trailer.

The trailer lock is a lock which is used for locking the ball cover hook at the front end of the trailer, prevents other tractors from clamping the connecting ball head into the ball cover hook, prevents the trailer from being dragged away by others and being stolen, and plays a role in theft prevention. The principle is that a round ball lock head is sleeved into a ball cover hook at the front end of a trailer, a lock rod is sleeved on a trailer rod and clamped with a lock body base, so that the lock body base and the trailer rod are locked, and therefore the trailer cannot be towed by other people. The existing trailer lock is unlocked and locked by a key, and the key is easy to forget to carry or lose, so that inconvenience is caused to use.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to solve the problem of providing a trailer anti-theft coded lock, which can lock a ball cover hook and avoid the trailer from being dragged away by others to cause theft; the lock can be unlocked and locked by the correct password set by the user, so that the inconvenience caused by forgetting to bring the key or losing the key is avoided.

(II) technical scheme

For solving the technical problem, the utility model provides a trailer theftproof trick lock, include: the lock comprises a base, a lock rod and a password locking mechanism, wherein a spherical lock head which is suitable for being matched with a spherical hood hook is arranged on the base, the spherical lock head is inserted into the spherical hood hook from bottom to top, the spherical lock head is fixedly arranged on the base through a bolt, and the spherical lock head is provided with an internal thread corresponding to the bolt; when the coded locking mechanism is in the locking state, the coded locking mechanism locks the lock rod to enable the lock rod not to slide, so that the spherical lock head cannot be separated from the spherical cover hook; when the lock is in the unlocking state, the password locking mechanism releases the lock rod to enable the lock rod to be pushed by external force, the external force drives the lock rod to be far away from the spherical lock head, and the spherical lock head can be separated from the spherical cover hook to complete unlocking. The lock rod, the spherical lock head and the password locking mechanism are arranged, so that the spherical hood hook can be locked, and the trailer is prevented from being dragged away by others to cause theft; the lock can be unlocked and locked by the correct password set by the user, so that the inconvenience caused by forgetting to bring the key or losing the key is avoided.

Furthermore, the password locking mechanism comprises a password wheel assembly, a movable rod and a lock tongue rod movably clamped with the lock rod, the password wheel assembly is used for locking/unlocking the movable rod, the password wheel assembly is provided with a correct password position and an error password position, and the movable rod is used for locking/unlocking the lock tongue rod; when the password wheel assembly is in the locking state, the password wheel assembly is in an error password position, the movable rod is locked by the password wheel assembly, the lock tongue rod is locked by the movable rod, and the lock tongue rod is clamped with the lock rod; when the password wheel assembly is in the correct password position in the unlocking state, the password wheel assembly unlocks the movable rod, the movable rod unlocks the lock bolt rod, and external force drives the lock bolt rod to be separated from the lock rod.

Further, the password wheel subassembly is the cavity form, the movable rod along its axial direction slip suit in the password wheel subassembly, the password wheel subassembly with be provided with the second elastic component between the movable rod under the spring action of first elastic component, the one end of movable rod with the one end butt of spring bolt pole, the spring bolt pole atress slides so that the other end of spring bolt pole with the locking lever block.

Furthermore, the movable rod with be provided with the intermediate lever between the spring bolt pole, intermediate lever one end is articulated to be connected on the base, the movable rod pass through the intermediate lever with the spring bolt pole butt.

Furthermore, the axis of the bolt rod intersects with the axis of the movable rod to form an included angle, and the included angle is an obtuse angle.

Furthermore, password wheel subassembly includes a plurality of password wheels, and is a plurality of password wheel inboard all is provided with first spacing groove, the movable rod be provided with a plurality of with the spacing arch that first spacing groove corresponds, it is a plurality of spacing protruding edge the movable rod axial direction interval sets up.

Furthermore, a first elastic piece is arranged between the lock tongue rod and the base, one end of the first elastic piece is abutted against the lock tongue rod, and the other end of the first elastic piece is abutted against the base, so that the lock tongue rod and the lock rod are clamped.

Furthermore, the locking rod is slidably mounted on the base in the vertical direction, a clamping piece is integrally formed at one end, close to the locking rod, of the locking tongue rod, and a plurality of first clamping grooves corresponding to the clamping piece are formed in the locking rod in the vertical direction.

Furthermore, be provided with on the base and be used for the drive the gliding knob of spring bolt pole, the knob includes the driver block, be provided with on the spring bolt pole with driver block complex recess, the driver block is arranged in the recess.

Further, password wheel subassembly is still established including corresponding the cover the digit wheel in the password wheel outside, be provided with on the base with the second spacing groove that the digit wheel corresponds, be provided with the arch on the password wheel, digit wheel inboard annular equidistant be provided with a plurality ofly with the protruding draw-in groove that corresponds the block, be provided with the password pole on the base, it is used for promoting a plurality of simultaneously to trade the password pole the password wheel, so that the arch breaks away from rather than corresponding the draw-in groove.

(III) advantageous effects

The anti-theft coded lock for the trailer can lock the ball cover hook (16), thereby avoiding the trailer from being dragged away by others to cause theft; the lock can be unlocked and locked by the correct password set by the user, so that the inconvenience caused by forgetting to bring the key or losing the key is avoided; the axis of the lock tongue rod and the axis of the movable rod are intersected to form an included angle, the included angle is an obtuse angle, the included angle between the lock tongue rod and the movable rod is set to be the obtuse angle, the size of the base can be reduced, the size of the whole product is reduced, the material cost is saved, and the storage and carrying are convenient; the base is provided with a dustproof cover corresponding to the digit wheel, so that the dustproof function is achieved, and the dustproof cover can be opened and closed through rotation; the base is provided with an elastic sheet, one end of the elastic sheet is abutted against the digit wheel, and resistance is applied to the digit wheel to prevent the digit wheel from rotating by mistake.

Drawings

FIG. 1 is a perspective view of the anti-theft coded lock for a trailer of the present invention;

FIG. 2 is a schematic structural view of the trailer of the present invention when the anti-theft combination lock is locked with the ball cover hook;

FIG. 3 is a schematic structural view of the inside of the anti-theft coded lock base of the trailer of the present invention;

FIG. 4 is a schematic structural view of an included angle of the anti-theft coded lock of the trailer of the present invention;

FIG. 5 is a cross-sectional view of the cipher wheel assembly of the anti-theft cipher lock of the trailer of the present invention;

FIG. 6 is a schematic structural view of the combination wheel assembly of the anti-theft combination lock for a trailer according to the present invention;

FIG. 7 is a schematic structural view of the anti-theft coded lock knob of the trailer of the present invention;

FIG. 8 is a schematic structural view of the locking tongue rod of the anti-theft coded lock for a trailer according to the present invention;

FIG. 9 is a schematic structural view of the round hole of the anti-theft coded lock for the trailer of the present invention;

the corresponding part names for the various reference numbers in the figures are: 1 is a base, 101 is a second limit groove, 2 is a lock rod, 201 is a first clamp groove, 3 is a spherical lock head, 4 is a coded wheel assembly, 401 is a coded wheel, 402 is a first limit groove, 403 is a digit wheel, 404 is a bulge, 405 is a second clamp groove, 5 is a movable rod, 501 is a limit bulge, 6 is a lock tongue rod, 601 is a clamping piece, 602 is a groove, 7 is a second elastic piece, 8 is a middle rod, 9 is a knob, 901 is a driving block, 902 is a rotary handle, 10 is a first elastic piece, 11 is a cipher changing rod, 12 is a dust cover, 13 is a round hole, 14 is a bolt, 15 is an elastic piece, 16 is a spherical cover hook, 17 is a first limit rod, 18 is a second limit rod, and A is an included angle.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1 to 9, the utility model provides a trailer theftproof trick lock, include: the lock comprises a base 1, a lock rod 2 and a password locking mechanism, wherein a spherical lock head 3 suitable for being matched with a spherical hood hook 16 is arranged on the base 1, the spherical lock head 3 is inserted into the spherical hood hook 16 from bottom to top, and the spherical lock head 3 is fixedly arranged on the base 1 through a bolt; when the spherical hood hook 16 is used, the spherical hood hook 16 is arranged between the lock rod 2 and the spherical lock head 3, the lock rod 2 is arched, the lock rod 2 and the base 1 form a closed annular section, the annular section is enlarged or reduced by sliding the lock rod 2, and the spherical hood hook 16 is provided with a first limiting rod 17 and a second limiting rod 18; when locking, the spherical lock head 3 is inserted into the spherical cover hook 16 from bottom to top, the lock rod 2 is slid to reduce the annular section, so that the lock rod 2 is clamped between the first limiting rod 17 and the second limiting rod 18 for limiting, and the lock rod 2 is locked by the password locking mechanism at the moment, so that the spherical lock head 3 cannot be separated from the spherical cover hook 16; when unlocking, the lock rod 2 is unlocked through the password locking mechanism, the lock rod 2 is slid to enlarge the annular section, so that the spherical lock head 3 is separated from the spherical cover hook 16 downwards to complete unlocking; the lock rod 2 is slidably mounted on the base 1, so that the lock rod 2 is close to or far away from the spherical lock head 3 to lock or unlock the spherical cover hook 16, the password locking mechanism has a locking state and an unlocking state, and when the password locking mechanism is in the locking state, the lock rod 2 is locked by the password locking mechanism and cannot slide, so that the spherical lock head 3 cannot be separated from the spherical cover hook 16; when the lock is in an unlocking state, the code locking mechanism releases the lock rod 2 to enable the lock rod 2 to be pushed by external force, the external force drives the lock rod 2 to be far away from the spherical lock head 3, and the spherical lock head 3 can be separated from the spherical cover hook 16 to complete unlocking; when the lock is unlocked, the sliding lock rod 2 is driven by external force to slide so that the lock rod 2 is separated from the base 1. The password locking mechanism is provided with a correct password position and an error password position, is in an unlocking state when in the correct password position, and is in a locking state when in the error password position.

Referring to fig. 1, 3 and 4, the password locking mechanism includes a password wheel assembly 4, a movable rod 5, and a latch rod 6 movably engaged with the lock rod 2, the password wheel assembly 4 is used to lock/unlock the movable rod 5, and the movable rod 5 is used to lock/unlock the latch rod 6; when the lock rod 2 is in a locking state, the lock rod 2 is in a state of being clamped with the lock tongue rod 6, the password wheel assembly 4 locks the movable rod 5, the movable rod 5 locks the lock tongue rod 6, and the lock tongue rod 6 is clamped with the lock rod 2, so that the lock rod 2 cannot slide relative to the base 1; when being in the unblock state, password wheel subassembly 4 unblock to movable rod 5, and movable rod 5 unblocks to latch rod 6, and external force drives latch rod 6 and breaks away from locking lever 2, and external force can drive locking lever 2 and slide 1 relatively.

Referring to fig. 1, 3 and 5, the password wheel assembly 4 is hollow, the movable rod 5 is slidably sleeved in the password wheel assembly 4 along the axial direction of the movable rod, a second elastic member 7 is arranged between the password wheel assembly 4 and the movable rod 5, the second elastic member 7 is a first compression spring, one end of the second elastic member 7 abuts against the movable rod 5, the other end of the second elastic member 7 abuts against the password wheel assembly 4, the movable rod 5 abuts against the base 1 under the action of the second elastic member 7, and the movable rod 5 drives the movable rod 5 to reset towards the other side through the second elastic member 7 after sliding towards one side; the bolt rod 6 slides along the axial direction and is arranged on the base 1, under the action of the elastic force of the first elastic piece 7, one end of the movable rod 5 is abutted to one end of the bolt rod 6, and the bolt rod 6 slides under the stress to enable the other end of the bolt rod 6 to be clamped with the lock rod 2. When the lock is unlocked, the movable rod 5 can slide relative to the password wheel assembly 4, the lock tongue rod 6 is driven by external force to move away from the lock rod 2, and the lock tongue rod 6 drives the movable rod 5 to move, so that the lock tongue rod 6 is completely separated from the lock rod 2. When the password wheel assembly is in a locking state, the movable rod 5 cannot slide relative to the password wheel assembly 4, and the movable rod 5 limits the lock tongue rod 6, so that the lock tongue rod 6 cannot slide to be separated from the lock rod 2.

Referring to fig. 1, fig. 3 and fig. 4, the axis of the latch bolt 6 intersects with the axis of the movable rod 5 to form an included angle a, the included angle a is an obtuse angle, the included angle a is 120-150 degrees, in this embodiment, the included angle a is 135 degrees, the included angle between the latch bolt 6 and the movable rod 5 is set to be an obtuse angle, the size of the base 1 can be reduced, thereby reducing the overall size of the product, saving the material cost and facilitating the storage and carrying. Be provided with intermediate lever 8 between movable rod 5 and the spring bolt pole 6, the articulated connection of 8 one ends of intermediate lever is on base 1, 5 one end of movable rod is supported and is leaned on intermediate lever 8, the one end that spring bolt pole 6 kept away from locking lever 2 supports and leans on intermediate lever 8, through the transmission of intermediate lever 8 between movable rod 5 and the spring bolt pole 6, intermediate lever 8 can shorten the displacement stroke of 6 transmission in-process of locking bolt pole, make locking bolt pole 6 only need just can drive movable rod 5 through less displacement and carry out the slip of longer stroke.

Referring to fig. 1, 3, 5 and 6, the password wheel assembly 4 includes a plurality of password wheels 401, the inner sides of the password wheels 401 are each provided with a first limiting groove 402, the movable rod 5 is provided with a plurality of limiting protrusions 501 corresponding to the first limiting grooves 402, and the limiting protrusions 501 are arranged at intervals along the axial direction of the movable rod 5; when the password wheel assembly 4 is in a correct password position, the first limiting grooves 402 of the password wheels 401 are all aligned with the corresponding limiting protrusions 501, and at the moment, the limiting protrusions 501 can horizontally slide along the corresponding first limiting grooves 402, so that the movable rod 5 is in a slidable state; when the password wheel assembly 4 is in an incorrect password position, the first limiting grooves 402 of all the password wheels 401 cannot be aligned with the corresponding limiting protrusions 501 at the same time, so that the limiting protrusions 501 cannot horizontally slide along the corresponding first limiting grooves 402, and the movable rod 5 is in a non-slidable state.

Referring to fig. 1, 3 and 4, a first elastic element 10 is disposed between the latch bolt bar 6 and the base 1, and the first elastic element is a second compression spring; one end of the first elastic piece 10 abuts against the lock tongue rod 6, and the other end of the first elastic piece 10 abuts against the base 1, so that the lock tongue rod (6) is clamped with the lock rod (2), and the assembly precision requirement is low; after the latch rod 6 slides away from the lock rod 2, the first elastic piece 10 drives the latch rod 6 to reset.

Referring to fig. 1, 3 and 8, the lock rod 2 is installed on the base 1 in a sliding manner along a vertical direction, a fastener 601 is integrally formed at one end of the lock tongue rod 6 close to the lock rod 2, and the lock rod 2 is provided with a plurality of first slots 201 corresponding to the fastener 601 along the vertical direction; when the card slot is in a locked state, the card member 601 is clamped with one of the first card slots 201; when locking, the first engaging groove 201 is selected to engage with the engaging member 601 as required, so that the spherical lock head 3 cannot be taken out of the ball cover hook 16.

Referring to fig. 1, 3, 4 and 7, a knob 9 for driving the latch rod 6 to slide is disposed on the base 1, the knob 9 includes a driving block 901, the driving block 901 is long, a groove 602 matched with the driving block 901 is disposed on the latch rod 6, the driving block 901 is disposed in the groove 602, and the knob 9 includes a rotating handle 902. When the handle is in a locked state, the rotating handle 902 and the driving block 901 are both in a vertical state, and the driving block 901 is arranged at one end in the groove 602; when the lock is unlocked, the knob 9 is rotated clockwise by 90 degrees, the rotating handle 902 and the driving block 901 are in a horizontal state, and the driving block 901 drives the latch rod 6 to slide and disengage from the lock rod 2 in the rotating process.

Referring to fig. 1, 3, 5, 6 and 9, the password wheel assembly 4 further includes four number wheels 403 correspondingly sleeved on the outer sides of the password wheels 401, in this embodiment, the password wheels 401 and the number wheels 403 are both provided with four numbers; a second limiting groove 101 corresponding to the digit wheel 403 is formed in the base 1, the digit wheel 403 is installed in the second limiting groove 101, the digit wheel 403 cannot slide along the axial direction of the digit wheel, and the digit wheel 403 can rotate along the circumferential direction of the digit wheel; the password wheel 401 is provided with a bulge 404, the inner side of the number wheel 403 is annularly provided with a plurality of clamping grooves 405 which are clamped with the bulge 404 at equal intervals, and the number wheel 403 and the password wheel 401 can synchronously rotate in the circumferential direction after being clamped; the base 1 is provided with a password changing rod 11, the password changing rod 11 is used for simultaneously pushing the password wheels 401, so that the protrusions 404 are separated from the corresponding clamping grooves 405, and the limiting protrusions 501 are correspondingly clamped with the first limiting grooves 402; the disengaged digit wheel 403 can rotate circumferentially, and the combination wheel 401 cannot rotate circumferentially; at this time, the digit wheel 403 is rotated to the new correct password position, the password changing rod 11 is released, and the second elastic member drives the password wheels 401 and the password changing rod 11 to reset, so that the digit wheel 403 and the password wheels are re-clamped at the new correct password position. The base 1 is provided with a round hole 13 corresponding to the password changing rod 11, and a sharp object is inserted into the round hole 13 to push the password changing rod 11. The base 1 is provided with a dustproof cover 12 corresponding to the digit wheel 403 for dustproof, and the dustproof cover 12 is opened and closed through rotation. The base 1 is provided with a spring plate 15, one end of the spring plate 15 is fixed on the base 1, and the other end of the spring plate 15 abuts against the number wheel 403 to apply a resistance force to the number wheel 403 so as to prevent the number wheel 403 from rotating by mistake.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and embellishments can be made without departing from the technical principle of the present invention, and these improvements and embellishments should also be regarded as the protection scope of the present invention.

Claims (10)

1. An anti-theft coded lock for a trailer, comprising: the lock comprises a base (1), a lock rod (2) and a password locking mechanism, wherein a spherical lock head (3) matched with a spherical cover hook (16) is arranged on the base (1), the spherical cover hook (16) is arranged between the lock rod (2) and the spherical lock head (3) during use, the lock rod (2) is slidably mounted on the base (1), so that the lock rod (2) is close to or far away from the spherical lock head (3) to lock or unlock the spherical cover hook (16), the password locking mechanism has a locking state and an unlocking state, and when the password locking mechanism is in the locking state, the lock rod (2) is locked by the password locking mechanism to prevent the lock rod (2) from sliding; when the coded lock mechanism is in the unlocking state, the coded lock mechanism releases the lock rod (2) so that the coded lock mechanism can be pushed by external force.

2. The anti-theft coded lock for the trailer according to claim 1, characterized in that the coded locking mechanism comprises a coded wheel assembly (4), a movable rod (5) and a latch rod (6) which is movably clamped with the lock rod (2), wherein the coded wheel assembly (4) is used for locking/unlocking the movable rod (5), and the movable rod (5) is used for locking/unlocking the latch rod (6); when the coded lock is in the locking state, the coded wheel assembly (4) locks the movable rod (5), the movable rod (5) locks the lock tongue rod (6), and the lock tongue rod (6) is clamped with the lock rod (2); when being in during the unblock state, password wheel subassembly (4) are right movable rod (5) unblock, movable rod (5) are right lock tongue pole (6) unblock, and external force drives lock tongue pole (6) break away from locking lever (2).

3. The anti-theft coded lock for the trailer according to claim 2, wherein the coded wheel assembly (4) comprises a plurality of coded wheels (401), a first limiting groove (402) is formed in each of the inner sides of the plurality of coded wheels (401), a plurality of limiting protrusions (501) corresponding to the first limiting grooves (402) are formed in the movable rod (5), and the plurality of limiting protrusions (501) are arranged at intervals along the axial direction of the movable rod (5).

4. The anti-theft coded lock of the trailer according to claim 3, wherein the coded wheel assembly (4) further comprises a number wheel (403) correspondingly sleeved on the outer side of the coded wheel (401), the base (1) is provided with a second limiting groove (101) corresponding to the number wheel (403), the coded wheel (401) is provided with a protrusion (404), the inner side of the number wheel (403) is annularly and equidistantly provided with a plurality of clamping grooves (405) correspondingly clamped with the protrusion (404), the base (1) is provided with a code changing rod (11), and the code changing rod (11) is used for simultaneously pushing the plurality of coded wheels (401) so that the protrusion (404) is separated from the corresponding clamping grooves (405).

5. The anti-theft coded lock for trailers according to claim 2, characterized in that a first elastic member (10) is arranged between the lock tongue rod (6) and the base (1), one end of the first elastic member (10) abuts against the lock tongue rod (6), and the other end of the first elastic member (10) abuts against the base (1) so as to clamp the lock tongue rod (6) and the lock rod (2).

6. The anti-theft coded lock for the trailer according to claim 2, wherein the lock rod (2) is slidably mounted on the base (1) in a vertical direction, a clamping piece (601) is integrally formed at one end of the lock tongue rod (6) close to the lock rod (2), and the lock rod (2) is provided with a plurality of first clamping grooves (201) corresponding to the clamping piece (601) in the vertical direction.

7. The anti-theft coded lock for the trailer according to claim 2, wherein a knob (9) for driving the latch rod (6) to slide is arranged on the base (1), the knob (9) comprises a driving block (901), a groove (602) matched with the driving block (901) is arranged on the latch rod (6), and the driving block (901) is arranged in the groove (602).

8. The anti-theft coded lock for the trailer according to any one of claims 2 to 7, wherein the movable rod (5) is slidably sleeved in the coded wheel assembly (4) along the axial direction of the movable rod (5), a second elastic member (7) is arranged between the coded wheel assembly (4) and the movable rod (5), the latch rod (6) is slidably arranged on the base (1) along the axial direction of the latch rod (6), one end of the movable rod (5) is abutted against one end of the latch rod (6) under the action of the elastic force of the second elastic member (7), and the latch rod (6) is forced to slide so as to enable the other end of the latch rod (6) to be fastened with the lock rod (2).

9. The anti-theft coded lock for trailers according to claim 8, characterized in that the axis of the latch bar (6) intersects the axis of the movable bar (5) to form an angle (A), which is an obtuse angle.

10. The anti-theft coded lock for trailers of claim 9, characterized in that an intermediate rod (8) is arranged between the movable rod (5) and the latch rod (6), and one end of the intermediate rod (8) is hinged to the base (1).

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