CN101037910B - U-type anti-theft lock for automobile - Google Patents

Abstract

The invention discloses a vehicular U-shaped theft-proof lock, comprising steel U-shaped locking bar, lock body (3) and lock head. and the lock body (3) is produced of cast-steel; the lock head employs spring lock head having axial rotary type bullet hole. The bullet lock head is unreleasably connected with bullet lock head hole (32) of the lock body (3); back end (21) of the bullet lock head is immovably connected with a swinging arm (4) which is provided with a device capable of pulling left (up)-right (down) column (55) and driving big head (51) of the left-right lock column to over spring force of return spring (53) and furling to the direction of bullet lock head hole (32) along lock column hole (33). Structure of the vehicular U-shaped theft-proof lock is simple, operation is easy, cost is relatively low, and it is can not be unlocked by imitated key to fit the lock, which has a perfect theft-proof effect and security.

Description

U-shaped anti-theft lock for vehicle

technical field

The invention relates to an anti-theft lock set for bicycles, motorcycles, electric bicycles, battery cars, tricycles and other vehicles, in particular to a U-shaped anti-theft lock for vehicles.

Background technique

There are many kinds of U-shaped anti-theft locks for vehicles in the prior art, and the structures are different. Some are simple in structure and cheap, but the anti-theft effect and safety are not ideal. One end of the U-shaped lock rod is hinged, and the other end of the two ends of the horizontal lock body is locked with the other end of the U-shaped lock rod. It is opened with a key; another example is a U-shaped anti-theft lock for a vehicle with a commonly used U-shaped lock rod inserted into an aluminum lock body. The aluminum lock body is easily opened by destructive means such as hammering; some such as China The various U-shaped anti-theft locks for vehicles disclosed on the website of the State Intellectual Property Office have better anti-theft effects and stronger security, but are more complicated in structure, cumbersome in operation and higher in cost. And above the vehicle anti-theft lock of prior art, its lock end and the key that matches it are still the general models on the market such as S type, cross type, quincunx type, half-moon type, they still can't put an end to the personnel outside the manufacturer. The key is prepared, so there is still a potential safety hazard that the key is imitated and the quilt cover is unlocked.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the above disadvantages of the prior art and provide a car with a simple structure, convenient operation and low cost, which cannot be unlocked by imitating a key, and has an ideal anti-theft effect and safety. Use U-shaped anti-theft lock.

The technical solution of the present invention is to provide a U-shaped anti-theft lock for vehicles with the following structure, including a steel U-shaped lock bar and heat-treated U-shaped lock bar and a lock bar hole for accommodating the two free ends of the U-shaped lock bar. The lock body and the lock head placed in the lock head hole of the lock body, the two free ends of the U-shaped lock rod have locking recesses; the lock body is made of cast steel; There is a non-detachable connection between the pin lock head of the pin hole and the pin lock head hole of the lock body; the tail end of the pin lock head is fixedly connected with a swing arm, and the left and right lock cylinders can be moved on the swing arm. The device; the left and right lock cylinder holes for accommodating the left and right lock cylinders are connected to the cylinder lock head hole and the left and right lock rod holes, and the axis of the lock cylinder hole and the axis of the lock cylinder hole are perpendicular to each other; The left and right lock cylinders are in the shape of a ladder with a large outside and a small inside. The shape of the outer end of the big head matches the shape of the locking recess of the U-shaped lock rod. The small rod is covered with a return spring, and the two ends of the return spring reach the big head respectively. On the inner end surface of the inner surface of the lock cylinder and the innermost step of the lock cylinder hole; there is a device finger on the swing arm that can move the tail ends of the left and right lock cylinders, and the two-week groove of the swing arm can be connected with the left and right lock cylinders extending into the bottom of the cylinder lock hole. The dial on the tail end of the right lock cylinder is mated; the shape of the tail ends of the left and right lock cylinders extending into the bottom of the pinhole lock hole is an arc block that is roughly the same shape as the wall of the pin pin lock hole. An integral and downwardly protruding dial is set at the end of the arc block, and the arc block is located above the swing arm; the circumferential groove of the swing arm can be matched with the dial, pointing to the downwardly protruding dial It is located inside the circumferential groove of the swing arm, and a central line of the two shifting columns is on the same line as the axis of the waist-shaped hole of the swing arm.

After adopting the above structure, compared with the prior art, the U-shaped anti-theft lock for vehicles of the present invention has the following significant advantages and beneficial effects:

1. Since the U-shaped anti-theft lock for vehicles of the present invention adopts a very simple and reliable toggle structure and locking structure, after rotating the lock head with a key, insert the U-shaped lock rod into the lock body to lock, and then pull out the U-shaped lock rod after rotating the lock head with a key. The type lock bar is opened immediately, so its structure is very simple, the operation is very convenient, and the cost is low, and the price is cheap.

2. Since the lock body of the U-shaped anti-theft lock for vehicles of the present invention is made of cast steel, the U-shaped lock bar is made of steel material and has been heat-treated, and the lock head and the pin hole of the lock body are non-detachable connections, so , Even if destructive methods such as prying and hammering are adopted, the lock cannot be opened, and its anti-theft effect is very ideal, and its security is very strong.

3. Since the U-shaped anti-theft lock for vehicles of the present invention adopts the pin lock head with an axially rotating pin hole that has never been used in the U-shaped anti-theft lock for vehicles in the prior art, the lock of the lock head cannot be seen from the outside. The internal structure of the core, the user who purchases the lock needs to configure the key and must contact the original manufacturer, and the original manufacturer will process and configure it according to the computer number of the original key. There is a high sense of security.

Description of drawings

Fig. 1 is a schematic diagram of the outline structure of an embodiment of a U-shaped anti-theft lock for vehicles according to the present invention.

Fig. 2 is a front sectional structural schematic diagram of a lock body of an embodiment of a U-shaped anti-theft lock for a vehicle according to the present invention.

Fig. 3 is a schematic cross-sectional structural diagram along line A-A in Fig. 2 .

Fig. 4 is a schematic top view of Fig. 1 without the key and the U-shaped lock bar.

Fig. 5 is a schematic diagram of the outline structure of another embodiment of the U-shaped anti-theft lock for vehicles of the present invention.

Fig. 6 is a schematic diagram of a side partial sectional structure of another embodiment of the U-shaped anti-theft lock for vehicles of the present invention.

Fig. 7 is a front sectional structural schematic view of another embodiment of the U-shaped anti-theft lock for vehicles of the present invention.

Fig. 8 is an enlarged schematic view of the swing arm of the U-shaped anti-theft lock for vehicles of the present invention.

Fig. 9 is an enlarged schematic diagram of a lock cylinder of a U-shaped anti-theft lock for a vehicle according to the present invention.

As shown in the figure:

1. Key;

2, tumbler lock head, 21, waist-shaped tail end;

3, lock body, 31, lock bar hole, 32, marble lock end hole, 33, lock cylinder hole, 34, the groove of lock body, 35, screw hole, 36, the hole of placing the lock bar after opening;

4, the swing arm, 41, the circumferential groove of the swing arm, 42, the waist-shaped hole;

5, lock cylinder, 51, (lock cylinder) big head, 52, (lock cylinder) small bar, 53, (lock cylinder) return spring, 54, (lock cylinder) arc block, 55, (lock cylinder of) dial column;

6, U-shaped lock bar, 61, groove, 62, concave ring;

7. Screws;

8, hold and climb, 81, through hole;

9. Countersunk taper pin.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 8, Fig. 9 show a kind of specific embodiment of U-shaped anti-theft lock for vehicles of the present invention.

U-shaped lock bar 6 adopts steel material such as round steel with a diameter of 14mm, and is heat-treated. The two free ends of the U-shaped lock bar 6 have locking recesses, that is, the grooves 61 arranged inside the two free ends of the U-shaped lock bar 6 .

The lock body 3 is made of cast steel, and the lock body 3 is provided with lock bar holes 31 for accommodating two free ends of the U-shaped lock bar 6 . The lock head adopts a pin lock end 2 with an axially rotating pin hole. Since the specific content of the tumbler lock 2 has been disclosed in detail in the prior patent of the applicant whose authorization announcement number is CN2830584Y, and the present invention only relates to its connection relationship, the specific structure and working principle of the tumbler lock 2 I won't repeat them here. The pin lock head 2 is placed in the pin lock end hole 32 of the lock body 3 . The tumbler head 2 is installed in the transverse direction of the lock body 3 , that is, in the left and right middle in the figure, and the axis of the pin hole 32 and the axis of the lock bar hole 31 are parallel to each other. Be non-detachable connection between the pin lock head 2 and the pin pin hole 32 of the lock body 3: connect with the countersunk taper pin (the taper is not obvious in the figure) 9 between the pin pin lock end 2 and the lock body 3.

The tail end of the pin lock head 2 is fixedly connected with the swing arm 4 , that is, the waist-shaped hole 42 at the center of the swing arm 4 is interference-fitted on the waist-shaped tail end 21 of the pin lock head 2 . There is a device on the swing arm 4 that can toggle the left and right lock cylinders 5 tail ends: the two-week groove 41 of the swing arm 4 can be connected with the dial 55 on the left and right lock cylinders 5 tail ends stretched into the bottom of the cylinder lock hole 32 Matching: the downwardly protruding shifting post 55 is positioned at the inboard of the swing arm 4 circumferential groove 41, and a centerline (vertical centerline in Fig. 2 and following Fig. 7) of the two shifting posts (55) and The axes of the waist-shaped holes 42 of the swing arm are on a line. The left and right lock cylinder holes 33 of the left and right lock cylinders 5 are accommodated on the lock body 3 to communicate with the pin lock hole 32 and the left and right lock lever holes 31, that is, the left and right lock cylinders 5 are accommodated on the lock body 3. 1. The right lock cylinder hole 33 communicates with the pin lock head hole 32 and the left and right lock bar holes 31 respectively. The axis of the lock cylinder hole 33 is perpendicular to the axis of the cylinder lock head hole 32 . The left and right lock cylinders 5 located in the lock cylinder holes 33 are stepped with a large outside and a small inside. The shape of the outer end of the big head 51 matches the locking recess of the U-shaped lock rod 6, that is, the shape of the groove 61. The small rod 52 A back-moving spring 53 is sheathed on the top, and the two ends of the back-moving spring 53 respectively reach the inner end surface of the big head 51 and the step at the innermost end of the lock cylinder hole 33 . The shape of the tail ends of the left and right lock cylinders that extend into the bottom of the pin lock hole 32 is an arc block 54 that is approximately the same as the inner wall radian of the pin pin hole 32, and is integral with the arc block 54 and protrudes downward. The dial 55 is arranged at the end of the arc block 54 , and the arc block 54 is located above the swing arm 4 .

The U-shaped anti-theft lock for vehicles of the present invention also includes a lock body 3 mounted on the frame 8 and a groove 34 matched with the frame on the lock body 3, and the frame 8 is installed on the lock body 3 The screw 7 and the through hole 81 on the climbing 8 matched with the screw 7 and the screw hole 35 on the lock body 3. The lock body 3 is also provided with a hole 36 for placing the opened lock bar

Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9 show another specific embodiment of the U-shaped anti-theft lock for vehicles of the present invention. This embodiment is basically the same as the above embodiment, the difference is that: the axis of the pin hole 32 and the axis of the lock bar hole (not shown in the figure) are perpendicular to each other; Concavity adopts concave ring 62, and the shape of the big head 51 outer ends of left and right lock columns 5 matches with the locking recess of U-shaped lock bar 6 that is the shape of concave ring 62.

When unlocking the U-shaped anti-theft lock for vehicles of the present invention, insert the key 1 into the lock hole of the tumbler lock head 2, push it inward to stop, and rotate clockwise, that is, drive the swing arm to rotate clockwise, when the swing arm 4 rotates When its circumferential groove 41 and the inboard side of the dial 55, that is, the left side of the upper dial 55 and the right side of the lower dial 55 in Fig. 2 and Fig. (right) dial 55 and drive the big head 51 of the left and right lock cylinder 5 to overcome the spring force of the back-moving spring 53 and gather along the lock cylinder hole 33 to the direction of the pin hole 32, so that the end of the big head 51 leaves the U-shaped lock bar Groove 61 or recessed ring 62 of two free ends of 6, extract out U-shaped locking bar 6 locks and promptly open this moment; Reverse operation gets final product during locking.

The present invention is not limited to the above embodiments, and its specific structure allows changes, such as: the pin lock head 2 and the pin lock hole 32 of the lock body 3 are non-detachably connected, and the pin lock head 2 can also be used. The joint surface of the outer circle and the inner circle of the pin lock head hole 32 of the lock body 3 is positioned with a conventional elastic steel ball; The structure of the quincunx-shaped hole interference fit on the quincunx-shaped tail end of the tumbler lock head 2; the device on the swing arm 4 that can toggle the tail ends of the left and right lock columns 5 can also adopt a waist-shaped groove and dial if there is a radian. Other conventional structures for matching columns; etc. The above changes are all within the protection scope of the present invention.

Claims (7)

1. A U-shaped anti-theft lock for vehicles, comprising steel and a heat-treated U-shaped lock bar (6) and a lock body provided with two free ends of the U-shaped lock bar (6) for accommodating the lock bar hole (31) (3) and the lock head placed in the lock head hole (32) of the lock body (3), the two free ends of the U-shaped lock bar (6) have locking recesses; the lock body (3) is cast Made of steel; the lock head adopts a pin lock head (2) with an axially rotating pin hole, and the pin lock head (2) is non-detachably connected to the pin lock head hole (32) of the lock body (3) The tail end of the pin lock head (2) is fixedly connected with a swing arm (4), and the swing arm (4) has a device that can stir the left and right lock cylinders; the left and right lock cylinders (5) of the left and right lock cylinders are accommodated. The right lock cylinder hole (33) is connected with the cylinder lock head hole (32) and the left and right lock rod holes (31), and the axis of the lock cylinder hole (33) is perpendicular to the axis of the lock cylinder hole (32); Left and right locking posts (5) in (33) are the stair shape that is big outside and small inside, and the shape of its big head (51) outer end matches with the shape of the locking recess of U-shaped lock bar (6), and its little bar ( 52) There is a return spring (53) on the top, and the two ends of the return spring (53) respectively reach the inner end surface of the big head (51) and the step at the innermost end of the lock cylinder hole (33); it is characterized in that: the swing arm (4) there is a device that can stir the left and right lock cylinders (5) tail ends, and the two-week groove (41) of the swing arm (4) can be locked with the left and right locks that stretch into the bottom of the cylinder lock hole (32) The dial column (55) on the post (5) tail end matches; The shape of the tail end of the left and right lock posts (5) extending into the bottom end of the pin lock hole (32) is roughly the same as that of the pin pin hole wall shape. Identical arc block (54), and arc block (54) is an integral body and the dial post (55) that protrudes downwards is located at the end of arc block (54), and arc block (54) is positioned at pendulum. Above the arm (4); the circumferential groove (41) of the swing arm (4) can be matched with the dial (55), and the downwardly protruding dial (55) is located in the circumferential groove (41) of the swing arm (4). ), and the axis of a central line of the two shifting posts (55) and the waist-shaped hole (42) of the swing arm is on the same line. 2. The U-shaped anti-theft lock for vehicles according to claim 1, characterized in that: the pin lock head (2) and the pin lock hole (32) of the lock body (3) are non-detachably connected, Refers to the connection between the tumbler lock head (2) and the lock body (5) with a countersunk taper pin (9). 3. The U-shaped anti-theft lock for vehicles according to claim 1, characterized in that: the tail end of the pin lock head (2) is fixedly connected with a swing arm (4), which refers to the waist-shaped center of the swing arm (4). The hole (42) is interference fit on the waist-shaped tail end (21) of the pin lock head (2). 4. The U-shaped anti-theft lock for vehicles according to claim 1, characterized in that: the axis of the pin hole (32) and the axis of the lock rod hole (31) are parallel to each other. 5. The U-shaped anti-theft lock for vehicles according to claim 1, characterized in that: the axis of the pin hole (32) and the axis of the lock rod hole are perpendicular to each other. 6. The U-shaped anti-theft lock for vehicles according to claim 1, characterized in that: the locking recesses of the two free ends of the U-shaped lock bar (6) refer to the two free ends of the U-shaped lock bar (6). The groove (61) inside the end, or refers to the concave ring (62) that is located at the two free ends of the U-shaped lock bar (6). 7. The U-shaped anti-theft lock for vehicles according to any one of claims 1 to 6, characterized in that it also includes a clasp (8) and a lock body (8) for installing the lock body (3) on the vehicle frame. 3) the groove (34) matched with the frame, and the screw (7) on the lock body (3) to install the hold (8) on the lock body (3) and the hold (8) matched with the screw (7) The through hole (81) and the screw hole (35) on the lock body (3).

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