CN101509330B - Anti-theft lock and its matching key - Google Patents

Abstract

The invention discloses a novel anti-theft lock and a key matched with the novel anti-theft lock, which comprise a lock box, a key and a lock cylinder, and are characterized in that a lock tongue and a clamping strip are movably clamped in the lock box, a boss and a first bulge are arranged on the lock tongue, and the key pushes the lock tongue to slide through the first bulge; the clamping strip is provided with a clamping block and a second bulge, the clamping block can be abutted against one side of the boss, and the key pushes the clamping strip to move upwards through the second bulge; the lock box is internally provided with a first spring which outwards pushes the lock tongue and a second spring which is reset by downwards pressing the clamping strip. The invention aims to provide a novel anti-theft lock with simple structure and independent work of a lock cylinder and a lock tongue and a key matched with the novel anti-theft lock.

Description

Anti-theft lock and its matching key

[technical field]

The invention relates to an anti-theft lock and a matching key.

[Background technique]

Lock is a common tool to protect the property and privacy of one's family or unit, but the competition between unlocking and anti-unlocking has never stopped. Since the existing mechanical locks usually push the opening and closing of the lock tongue through the rotation of the lock cylinder, and the lock hole of the mechanical lock cylinder is exposed, it is not convenient to effectively protect the lock hole of the lock cylinder, and it is easy to be used by people with ulterior motives. Tools such as so-called master keys are inserted into the keyhole to open the lock, which brings huge money and property losses, mental damage, and even personal injury to the family or unit.

[Content of the invention]

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a simple structure anti-theft lock with lock core and dead bolt working independently and a matching key.

In order to solve the above-mentioned problems, the present invention adopts the following technical solutions:

The anti-theft lock includes a lock box, a key and a lock cylinder. It is characterized in that a lock tongue and a card strip are installed in the movable card in the lock box. The lock tongue is provided with a boss and a first protrusion, and the key passes through the first protrusion. Push the lock tongue to slide; the clip is provided with a block and a second protrusion, the block can lean against the side of the boss, and the key moves up through the second protrusion to push the clip; the lock box is equipped with The first spring that presses the deadbolt outward and the second spring that presses the clamp bar downward to reset;

The above-mentioned anti-theft lock is characterized in that a positioning sleeve is provided outside the lock cylinder, and a paddle is provided on the key to push the first projection to move laterally when the key is rotated. The inner wall of the positioning sleeve is provided with a There are guide slots for the paddles to pass through;

The above-mentioned anti-theft lock is characterized in that the lock box is provided with a panel, the positioning sleeve is fixedly installed on the outside of the panel, and the panel is provided with a through hole for limiting the rotation angle of the pick;

As mentioned above, the anti-theft lock is characterized in that the front end of the key is provided with an inclined surface that can push the second protrusion to move upward when the key is inserted, and the lock cylinder is provided with a bar-shaped groove, and the bar-shaped groove is connected with the guide The slots together form a socket for the key to enter;

The above-mentioned anti-theft lock is characterized in that the inner walls on both sides of the bar-shaped groove and the guide groove are provided with a plurality of convex lines arranged in parallel, and the two sides of the key are correspondingly provided with grooves that cooperate with the above-mentioned convex lines;

The above-mentioned anti-theft lock is characterized in that the lock tongue is placed horizontally, and one end of the lock tongue is provided with two parallel protrusions, and the two protrusions are correspondingly inserted into the two slots provided in the lock box; the other end of the lock tongue is provided with There is a horizontal sliding rod, the first spring is set on the horizontal sliding rod, and the front end of the horizontal sliding rod passes through the locking hole on the lock box and is connected with a handle;

The above-mentioned anti-theft lock is characterized in that the card bar is placed vertically, the lower end of the card bar is inserted into the second slot provided by the lock box, and the upper end of the card bar is provided with a vertical slide bar. The spring is set on the vertical slide bar, and the upper end of the vertical slide bar is inserted into the second locking hole provided at the upper end of the lock box;

The above-mentioned anti-theft lock is characterized in that the upper end of the lock box is movably connected with a lock block that can rotate in the horizontal direction, and the lock block is provided with a rotation that can be pressed against the outside of the second card hole to prevent the card bar from moving upward. of briquetting.

The beneficial effects of the present invention are:

1. The front end of the key is provided with a slope, and the key is also equipped with a pick. The inner wall of the positioning sleeve is provided with a guide groove for the pick to pass through. There is a strip groove on the lock cylinder. The strip groove and the guide groove form together for the key The entry jack, the jack formed by the strip groove and the guide groove plays a role in inserting the key into the switch, the structure is simple, and the anti-theft performance is further improved.

2. The positioning sleeve is fixedly installed on the outside of the panel. There is a jack for the key to be inserted on the panel. There are two ribs on both sides of the jack to limit the rotation angle of the key, which is convenient for users to unlock and prevent unnecessary accidents caused by excessive rotation of the key. trouble;

3. The lock box is equipped with the lock tongue and the first spring for pressing the lock tongue outward; the lock box is also equipped with a clamp and a second spring for pressing the clamp downward to reset, and the clamp on the clamp The block and the boss on the lock tongue are engaged and disengaged to complete the locking of the lock tongue, and the overall structure is simple;

4. There is a boss and a first protrusion on the lock tongue, and the key pushes the lock tongue to slide through the first protrusion; there is a block and a second protrusion on the clip, and the block can lean against the side of the boss to The sliding of the lock bolt 21 is restricted, and the key pushes the bar to move up through the second protrusion, so the structure is simple.

[Description of drawings]

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

Fig. 1 is a perspective view of an anti-theft lock installed on a door;

Fig. 2 is a three-dimensional view of the anti-theft lock;

Figure 3 is an enlarged view of A in Figure 2;

Figure 4 is an explosion diagram of the anti-theft lock;

Figure 5 is an enlarged view at B in Figure 4;

Fig. 6 is the schematic diagram after the key is inserted into the lock box;

Fig. 7 is a schematic diagram when the key is unlocked;

Figure 8 is a schematic diagram after unlocking;

Figure 9 is an exploded view of the lock box;

Fig. 10 is a schematic diagram of the three-dimensional structure of the key.

[Detailed ways]

As shown in the figure, the anti-theft lock includes a lock box 11, a key 12 and a lock cylinder 13. The lock box 11 is equipped with a lock tongue 21 and a clamp strip 31, and the lock tongue 21 is provided with a boss 210 and a first protrusion. 211, the key 12 pushes the lock tongue 21 to slide through the first protrusion 211; the card bar 31 is provided with a block 310 and a second protrusion 311, and the block 310 can lean against the side of the boss 210 to limit the sliding of the lock tongue 21 , the key 12 pushes the clip bar 31 to move up through the second protrusion 311; the first spring 22 that presses the lock tongue 21 outwardly and the second spring 32 that presses the clip bar 31 to reset downward is housed in the lock box 11.

Wherein, the lock tongue 21 is placed horizontally, the first protrusion 211 is an upwardly extending vertical block set in the middle of the lock tongue 21, and two parallel protrusions 212 are provided at one end of the lock tongue 21, and the two protrusions 212 are correspondingly inserted into the lock box 11. The other end of dead bolt 21 is provided with horizontal sliding bar 213, the first spring 22 is sleeved on the horizontal sliding bar 213, and the front end of horizontal sliding bar 213 passes through the locking hole 114 on the lock box 11 and connects with a Handles 19 are connected.

The clip 31 is vertically placed, the second protrusion 311 is located above the first protrusion, the second protrusion 311 is a horizontal block set in the middle of the clip 31 and extends to the side of the first protrusion 211, and the lower end of the clip 31 is inserted In the second slot 115 provided in the lock box 11, the upper end of the clip bar 31 is provided with a vertical slide bar 312, the second spring 32 is set on the vertical slide bar 312, and the upper end of the vertical slide bar 312 is inserted into the lock box. 11 in the second locking hole 116 provided at the upper end. The upper end of the lock box 11 is movably connected with a lock block 117 that can rotate in the horizontal direction. The lock block 117 is provided with a pressure block 1170 that can be pressed on the outside of the second clamping hole 116 to prevent the clamp bar 31 from moving upward after rotation.

The lock core 13 is also provided with a positioning sleeve 15. In the present invention, the lock core 13 is rotatably clamped in the positioning sleeve 15, and the outside of the lock core 13 is also provided with a circular groove 133, and the positioning sleeve 15 is provided with an inserting sleeve. The locating pin 16 inside, the locating pin 16 protrudes in the ring groove 133 and can slide relative to the ring groove 133.

A panel 110 is arranged on the lock box 11 , and the positioning sleeve 15 is fixedly installed on the outside of the panel 110 . The front end of the key 12 is provided with an inclined plane 121 that can push the second protrusion 311 to move upward when the key 12 is inserted, and the key 12 is also provided with a paddle 123 that pushes the first protrusion 211 to move laterally when the key 12 is rotated. The inner wall is provided with a guide groove 151 for the paddle 123 to pass through, and the panel 110 is provided with a through hole 1101 for limiting the rotation angle of the paddle 123 . The lock cylinder 13 is provided with a strip groove 131, and the strip groove 131 and the guide groove 151 together form a jack for the key 12 to enter. The inner walls of the strip groove 131 and the guide groove 151 are provided with a plurality of convex strips 142 arranged in parallel. , the two sides of the key 12 are correspondingly provided with grooves 122 for matching with the above-mentioned protruding strips 142 . The insertion hole formed by the strip groove 131 and the guide groove 151 plays a role in inserting the key 12 into a switch, the structure is simple, and the anti-theft performance is further improved.

The using method of key 12 and anti-theft lock is as follows:

The first step: as shown in Figure 2, adjust the lock cylinder 13 so that the strip groove 131 on the lock cylinder 13 is facing the guide groove 151 on the positioning sleeve 15, and now the strip groove 131 and the guide groove 151 form an energy supply together. The jack that the key 12 enters;

Step 2: As shown in Figure 6 and Figure 7, insert the key 12, when the key 12 is inserted, the inclined surface 121 at the front end of the key 12 will lean against the lower side of the second protrusion 311, and push along with the key 12 moving forward The second protrusion 311 moves up, and at this moment, the clip bar 31 compresses the second spring 32 , and finally the block 310 on the clip bar 31 moves above the step 210 , and the dead bolt 21 breaks away from the restriction of the clip bar 31 .

In this step, the pick piece 123 on the key 12 passes through the guide groove 151 on the positioning sleeve 15 and then is inserted into the through hole 1101 provided on the panel 110 . Due to the limitation of the through hole 1110 in the present invention, the key 12 can only be turned clockwise to unlock.

Step 3: As shown in Figure 7 and Figure 8, after the card bar 31 is moved up, turn the key 12 clockwise, and the plectrum 123 on the key 12 pushes the first protrusion 211 to move horizontally, so that the lock bolt 21 compresses the first spring 22 , the two projections 212 on the dead bolt 21 slide into the lock box 11 to unlock.

Claims (4)

1. An anti-theft lock, comprising a lock box (11), a key (12) and a lock cylinder (13), characterized in that: the movable card in the lock box (11) is equipped with a dead bolt (21) and a clip (31) , the first spring (22) that presses the dead bolt (21) outwards and the second spring (32) that presses the bar (31) and resets downwards are also housed in the lock box (11); Dead bolt (21) is placed horizontally, and dead bolt (21) is provided with boss (210) and first protrusion (211), and dead bolt (21) one end is provided with two parallel projections (212), and two projections ( 212) are correspondingly inserted in the two draw-in slots (113) provided by the lock box (11); the other end of the dead bolt (21) is provided with a horizontal slide bar (213), and the first spring (22) is sleeved on On the horizontal slide bar (213), the front end of the horizontal slide bar (213) passes through the card hole (114) on the lock box (11) and is connected with a handle (19); the key (12) passes through the first protrusion ( 211) Push the deadbolt (21) to slide, and the key (12) is provided with a plectrum (123) that pushes the first protrusion (211) to move laterally when the key (12) rotates; The clip (31) is vertically placed, and the clip (31) is provided with a clip (310) and a second protrusion (311), and the clip (310) can lean against the boss (210) side, and the clip (31) The lower end is inserted in the second slot (115) provided by the lock box (11), the upper end of the clip (31) is provided with a vertical slide bar (312), and the second spring (32) Set on the vertical slide bar (312), the upper end of the vertical slide bar (312) is inserted in the second card hole (116) provided at the upper end of the lock box (11); the key (12) passes through the second protrusion ( 311) Push the clip (31) to move upward, and the front end of the key (12) is provided with a slope (121) that can push the second protrusion (311) upward when the key (12) is inserted; The lock core (13) is also provided with a positioning sleeve (15), the positioning sleeve (15) inner wall is provided with a guide groove (151) for the plectrum (123) to pass through, and the lock core (13) is provided with a strip Shaped groove (131), strip groove (131) and guide groove (151) form the jack that enters for key (12) together. 2. The anti-theft lock according to claim 1, characterized in that the lock box (11) is provided with a panel (110), the positioning sleeve (15) is fixedly installed on the outside of the panel (110), and the panel (110) is provided with a The through hole (1101) is used to limit the rotation angle of the plectrum (123). 3. The anti-theft lock according to claim 1, characterized in that the inner walls of both sides of the strip groove (131) and the guide groove (151) are provided with a plurality of convex strips (142) arranged in parallel, and the key (12) Grooves (122) matching the above-mentioned protruding strips (142) are formed correspondingly on both sides. 4. The anti-theft lock according to claim 1, characterized in that the upper end of the lock box (11) is movably connected with a lock block (117) that can rotate in the horizontal direction, and the lock block (117) is provided with a lock block (117) that can be pressed together after rotation. A pressing block (1170) on the outside of the second clamping hole (116) to prevent the upward movement of the clamping strip (31).

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