CN204238671U - Closed Mechanical theft-proof door lock - Google Patents

Abstract

The utility model discloses a closed mechanical anti-theft door lock, which comprises a closed anti-theft cap, a lock body and a door lock key; the closed anti-theft cap includes three nozzles, a cover plate and a bottom plate; the lock body It includes two door lock pin fixing blocks, crank shaft sleeve, gasket, crank, crank sleeve, door lock pin, spring and spring fixing block; the two door lock pin fixing blocks are fixed on the inner surface of the door, The door lock pin is inserted into the two two door lock pin fixing blocks and can slide linearly in the two door lock pin fixing blocks; the key includes a tooth holder cylinder, an inner push pin, a handle and Retractable pin. The closed mechanical anti-theft door lock of the utility model has the advantages of convenient opening and closing of the door lock, preventing non-workers from picking the lock and stealing, reliable performance, high anti-theft performance, difficult to break, easy to open, and difficult to imitate the door lock key.

Description

Closed mechanical anti-theft door lock

technical field

The utility model relates to a closed mechanical anti-theft door lock.

Background technique

Existing large-scale and other facility door locks use ordinary anti-theft door locks, such as field facilities that cannot be accessed or maintained frequently, the door locks are prone to aging, the anti-theft performance is poor, the tools used for the anti-theft door locks are heavy, and the opening and closing operations are complicated. In addition, thefts that may occur between duty intervals or when there is no one at night (such as the theft incidents of Luohe and Pingxu large spanning towers in Huainan area in recent years), will lead to damage and loss of equipment and affect the safe operation of power facilities. Reduce and eliminate safety accidents caused by human factors.

Therefore, wish to obtain a kind of good mechanical door lock of anti-theft performance.

Utility model content

The utility model provides a closed mechanical anti-theft door lock in order to avoid the disadvantages of the above-mentioned prior art, so as to prevent non-workers from picking the lock and stealing and improve the anti-theft performance.

The utility model adopts the following technical solutions for solving technical problems.

The closed mechanical anti-theft door lock has the following structural features, including a closed anti-theft cap, a lock body and a door lock key;

The closed anti-theft cap includes three nozzles, a cover plate and a base plate; the three nozzles include an upper nozzle, a middle nozzle and a lower nozzle; the upper nozzle, the middle nozzle and the lower nozzle The mouth is arranged on the bottom plate sequentially from top to bottom, and the cover plate is arranged on the middle pipe mouth and closes the middle pipe mouth;

The lock body includes two door lock pin fixing blocks, crank shaft sleeve, crank, crank sleeve, door lock pin, spring and spring fixing block; the two door lock pin fixing blocks are fixed on the inner surface of the door , the door lock pin is inserted into the two door lock pin fixing blocks and can slide linearly in the two door lock pin fixing blocks; the door lock pin is sleeved with the spring, so One end of the spring is fixed on the spring fixing block, the spring fixing block is fixed on the door lock pin, and the spring fixing block and the spring are both arranged between the two door lock pin fixing blocks One end of the crank is provided with a waist hole, which is hinged with the door lock pin through a hinge shaft passing through the waist hole, the other end of the crank is provided with the through hole, and the crank shaft The casing passes through the door and is inserted in the through hole, the crank socket is fixed on one end of the door of the crankshaft casing, and the crank, the crankshaft casing and the crank socket are are fixedly connected; the crank sleeve is provided with an inwardly recessed slot, and the slot is located on the side of the crank sleeve away from the crank;

The key includes a tooth seat cylinder, an inner ejector pin, a handle and a telescopic pin; the first end of the inner ejector pin is inserted into the tooth seat barrel, the second end of the inner ejector pin is provided with a perforation and the The handle passes through the through hole, so that the inner ejector pin and the handle intersect each other in a perpendicular manner; there are two telescopic pins, and the two telescopic pins are both arranged in the tooth seat cylinder ; When the inner ejector pin is inserted into the tooth seat cylinder and abuts against the telescopic pin, the telescopic pin rotates and one end of the telescopic pin protrudes outside the tooth seat cylinder;

After the key is inserted into the crankshaft sleeve of the lock body, the handle is used to push the inner ejector pin, and the inner ejector pin pushes the telescopic pin out of the socket; The card is embedded in the slot of the crank sleeve, and then the key is turned to drive the crank to rotate, thereby driving the door lock pin to move linearly, so that the door lock is opened.

The structural features of the closed mechanical anti-theft door lock of the present utility model also lie in:

There is a groove at the end of the tooth seat tube far away from the telescopic pin; when the inner ejector pin is inserted into the tooth seat tube and the telescopic pin is pushed out of the tooth seat tube, the handle is just snapped into the in the groove.

The telescopic pin is L-shaped, and the portion of the telescopic pin that abuts against the first end of the inner ejector pin is arc-shaped; the end of the first end of the inner ejector pin is also arc-shaped.

Compared with the prior art, the beneficial effects of the utility model are reflected in:

A closed mechanical anti-theft door lock of the utility model comprises a closed anti-theft cap, a lock body, and a door lock key. The closed anti-theft cap is installed on the outside of the lock body to conceal the lock body in the door. The lock body is installed on the fixed steel plate of the gate, and comprises two door lock pin fixing blocks, a crankshaft bushing, a gasket, a crank, a crank sleeve seat, a door lock pin, a spring and a spring fixing block. The door lock key is formed by connecting a tooth seat cylinder, an inner ejector pin, a retractable pin and a handle.

After the key is inserted into the crankshaft sleeve of the lock body, the inner push pin is pushed by the handle, and the telescopic pin is pushed by the inner push pin to protrude outside the tooth holder tube; at this time, turn the key so that the key can be inserted into the Then turn the key to drive the crank to rotate, thereby driving the door lock pin to move in a straight line, so that the door lock is opened, realizing the convenience of opening and closing the door lock, and improving the efficiency of inspection and maintenance; It needs to be opened with a special key, which greatly improves the anti-theft performance and reduces the occurrence of man-made damage. For facilities in the field or difficult to maintain frequently, using this door lock can improve the safe operation performance of the equipment. The closed mechanical anti-theft door lock of the utility model has the advantages of reliable overall performance, high anti-theft performance, difficult to pry, easy to open, and difficult to imitate the door lock key.

The closed mechanical anti-theft door lock of the utility model has the advantages of convenient opening and closing of the door lock, preventing non-workers from picking the lock and stealing, reliable performance, high anti-theft performance, difficult to break, easy to open, and difficult to imitate the door lock key.

Description of drawings

Fig. 1 is the front view of the lock body of the closed mechanical anti-theft door lock of the present invention.

Fig. 2 is a top view of the lock body of the closed mechanical anti-theft door lock of the present invention.

Fig. 3 is a schematic diagram of the closed mechanical anti-theft door lock of the present invention when the lock body is opened.

Fig. 4 is the front view of the key of the closed mechanical anti-theft door lock of the present utility model (telescopic pin does not protrude).

Fig. 5 is a view from the direction A in Fig. 4 .

Fig. 6 is the front view of the key of the closed mechanical anti-theft door lock of the present utility model (telescopic pin stretches out).

Fig. 7 is a front view of the anti-theft cap of the closed mechanical anti-theft door lock of the present invention.

FIG. 8 is a cross-sectional view along line A-A of FIG. 7 .

Fig. 9 is a front view of the crank shaft sleeve of the closed mechanical anti-theft door lock of the present invention.

Fig. 10 is a front view of the crank of the closed mechanical anti-theft door lock of the present invention.

Fig. 11 is a front view of the crank housing of the closed mechanical anti-theft door lock of the present invention.

Fig. 12 is a sectional view along line B-B in Fig. 11 .

Fig. 13 is a front view of the door lock pin fixing block of the closed mechanical anti-theft door lock of the present invention.

Fig. 14 is a front view of the spring fixing block of the closed mechanical anti-theft door lock of the present invention.

Fig. 15 is a front view of the retractable pin of the closed mechanical anti-theft door lock of the present invention.

Fig. 16 is a front view of the gear seat cylinder of the closed mechanical anti-theft door lock of the present invention (the upper half section, the circular platform part at the lower end is removed).

Fig. 17 is a sectional view of C-C in Fig. 16 .

Fig. 18 is a front view of the inner ejector pin of the closed mechanical anti-theft door lock of the present invention.

The labels in Figure 1-18 are: 1 anti-theft cap, 2 lock body, 3 key, 4 cover plate, 5 bottom plate, 6 upper nozzle, 7 middle nozzle, 8 lower nozzle, 9 door lock pin fixing block, 10 crank Shaft sleeve, 11 crank, 12 crank sleeve, 13 door lock pin, 14 spring, 15 spring fixed block, 16 waist-shaped hole, 17 hinged shaft, 18 through hole, 19 door, 20 card slot, 21 tooth seat tube, 22 inner top pins, 23 handles, 24 telescopic pins, 25 perforations.

The utility model will be further described below through specific embodiments in conjunction with the accompanying drawings.

Detailed ways

Referring to accompanying drawings 1-18, the closed mechanical anti-theft door lock of the present utility model comprises a closed anti-theft cap 1, a lock body 2 and a door lock key 3;

The closed anti-theft cap 1 includes three nozzles, a cover plate 4 and a bottom plate 5; the three nozzles include an upper nozzle 6, a middle nozzle 7 and a lower nozzle 8; the upper nozzle 6 , The middle nozzle 7 and the lower nozzle 8 are sequentially arranged on the bottom plate 5 from top to bottom, and the cover plate 4 is arranged on the middle nozzle 7 and closes the middle nozzle 7;

Described lock body 2 comprises two door lock pin fixing blocks 9, crankshaft bushing 10, crank 11, crank sleeve seat 12, door lock pin 13, spring 14 and spring fixing block 15; The block 9 is fixed on the inner surface of the door, and the door lock pin 13 is inserted in the two door lock pin fixing blocks 9 and can slide linearly in the two door lock pin fixing blocks 9; Door lock pin 13 is sleeved with described spring 14, and one end of described spring 14 is fixed on the described spring fixing block 15, and described spring fixing block 15 is fixed on the described door lock pin 13, and described spring fixing block 15 and the spring 14 are all arranged between the two door lock pin fixing blocks 9; one end of the crank 11 is provided with a waist-shaped hole 16, through which a hinge shaft 17 passing through the waist-shaped hole 16 and The door lock pin 13 is hinged, the other end of the crank 11 is provided with the through hole 18, the crank shaft sleeve 10 passes through the door 19 and is inserted in the through hole 18, the crank The sleeve 12 is fixed on one end of the door of the crankshaft sleeve 10, and the crank 11, the crankshaft sleeve 10 and the crank sleeve 12 are fixedly connected; the crank sleeve 12 is provided with a direction An inner recessed slot 20, the slot 20 is located on the side of the crank sleeve 12 away from the side of the crank 11;

The key 3 includes a tooth seat cylinder 21, an inner ejector pin 22, a handle 23 and a telescopic pin 24; the first end of the inner ejector pin 22 is inserted into the tooth seat barrel 21, and the second end of the inner ejector pin 22 The two ends are provided with perforations 25 and the handle 23 passes through the perforations 25, so that the inner ejector pin and the handle intersect in a mutually perpendicular manner; the telescopic pin 24 has two, two Each telescoping pin 24 is arranged in the tooth seat cylinder 21; when the inner ejector pin 22 is inserted into the tooth seat cylinder 21 and abuts against the telescopic pin 24, the telescopic pin 24 is rotated and the telescopic pin One end of 24 protrudes outside the tooth seat cylinder 21;

After the key 3 is inserted into the crankshaft sleeve 10 of the lock body, the handle 23 is used to push the inner push pin 22, and the inner push pin 22 pushes the telescopic pin 24 to protrude outside the tooth seat cylinder 21; Key 3, so that the telescopic pin 24 of the key 3 can be inserted into the draw-in groove 20 of the crank housing 12, and then the key 3 is turned to drive the crank 11 to rotate, thereby driving the door lock pin 13 to move linearly, thereby opening the door lock.

The end of the tooth seat cylinder 21 far away from the telescopic pin 24 is provided with a groove; The handle 23 is just snapped into the groove.

The telescopic pin 24 is L-shaped, and the part of the telescopic pin 24 abutting against the first end of the inner ejector pin 22 is arc-shaped; the end of the first end of the inner ejector pin 22 is also arc-shaped.

As shown in Figure 1-15, the closed mechanical anti-theft door lock of the present utility model comprises a closed anti-theft cap, a lock body and a door lock key.

The closed anti-theft cap is composed of three nozzles, a cover plate and a base plate, the base plate and the door are tightly connected by two bolts, the lock hole is protected by the cover plate, and no bolts and lock holes are exposed when the door is normally closed.

The lock body comprises a crank shaft sleeve, a gasket, a crank, a crank sleeve, a door lock pin, a spring, and a spring fixing block. The sleeve-shaped crankshaft sleeve acts as a lock hole and is connected to the door. The crankshaft sleeve fixes the lock body and the door together. The crankshaft sleeve can be rotated in the door. There are two slots on the edge of the crank sleeve, when the door lock key is inserted, the telescopic pin will fall into the slot, thereby fixing the key and the crank sleeve. When the key is turned, the key drives the crank to make the door lock pin expand and contract, thereby controlling the opening and closing of the door. The door lock pin is fixed in a horizontal position by two door lock pin fixing blocks. The middle part is assembled with a spring by the spring fixing block. The elastic force of the spring makes the door lock pin in the extended position under normal conditions. The spring force pulls the door lock pin in,

The door lock key includes a tooth seat cylinder, an inner ejector pin, a handle and a telescopic pin. The outer diameter of the tooth seat tube matches the inner diameter of the crankshaft casing of the lock body to form the key body. There is a groove at the handle end of the tooth seat cylinder. When a key is inserted into the lock hole, the inner ejector pin is pushed into the tooth seat cylinder, and the handle is inserted into the groove. The inner ejector pin in the barrel is connected to the handle and the telescopic pin. When the inner ejector pin is not pushed into the gear seat barrel, the handle at one end is not locked into the tooth seat barrel groove and can be rotated freely, and the telescopic pin at the other end is not pushed out. Inside the gear holder. When the key is inserted into the lock hole, the inner ejector pin is pushed into the tooth seat cylinder, and the handle at one end is inserted into the groove of the tooth seat barrel to be fixed, and the two telescopic pins at the other end are pushed out by the inner ejector pin, and the telescopic pin is stuck in the crank sleeve inside the door. in the card slot of the seat.

The closed anti-theft cap is completely closed, and no bolts and keyholes are exposed.

The lock body is all arranged in the door, and two draw-in slots are opened on the crank sleeve as cooperation with the key.

The door lock key is protected by a tooth seat tube, a notch is opened at one end to fix the handle, and two telescopic pins that can rotate around the pin shaft are fixed at the other end with a pin shaft.

When in use, insert the tooth seat tube into the lock hole, manually push the inner ejector pin into the inner end of the tooth seat tube, the handle is stuck in the groove on the tooth seat tube to fix it, and the telescopic pin at the other end is pushed out in the door. At this time, it may not be stuck in the draw-in slot of the crank cover seat, and it can be stuck in the draw-in slot of the crank cover seat by rotating left and right at a certain angle. After being stuck, shake the handle to pull the crank to open the door lock.

When the key is inserted into the bushing, the tooth holder must be blocked, otherwise the key will enter the lock hole excessively, and the inner ejector pin cannot push out the telescopic pin, so that the lock cannot be unlocked. Make a protrusion near the handle end, and the protrusion is stuck behind the edge of the lock hole , push in the inner top pin, and rotate to test whether the telescopic pin at the other end is stuck in the groove.

Referring to Figure 4-6, the handle of the key of the door lock of the present utility model is not pushed into the gear holder under normal conditions. The telescopic pin is pushed out, and the telescopic pin is stuck in the two draw-in slots of the crank housing, so that the key is fixed.

Referring to Figures 7 and 8, the anti-theft cap is fixed on the door by bolts at both ends, and the crankshaft casing mouth for inserting the key is just tightly covered, and the bolt is removed during use to expose the lock hole protected by the cover plate for operation.

Referring to Fig. 2, the lock body of the door lock of the present utility model is all located in the door, and the keyhole is protected by an anti-theft cap. When opening, insert the key and clamp the telescopic pin to the crank socket to fix it, turn the key, and the crank will also turn accordingly, and the door lock pin pushed outward by the spring will be pulled into the lock body by the crank, thereby opening the door.

The closed mechanical anti-theft door lock of the utility model has high anti-theft performance, and the lock hole is closed by the anti-theft cap, and it is difficult to open the outside without a special tool, which greatly reduces theft and improves safety; the lock body is an inner Embedded, tightly closed, strong material, difficult to pry or break open, effectively preventing man-made damage; the door lock is easy to open and close, and the speed is 2 times faster than the original lock, which improves the work efficiency of large-scale inspections ; The door lock key is easy to carry, exquisitely made, and difficult to imitate, making it more convenient for operating personnel to inspect the equipment.

The above embodiment is only to describe the preferred implementation of the utility model, not to limit the scope of the utility model. The various deformations and improvements made should fall within the protection scope determined by the claims of the present utility model.

Claims (3)

1. The closed mechanical anti-theft door lock is characterized in that it comprises a closed anti-theft cap (1), a lock body (2) and a door lock key (3); The closed anti-theft cap (1) includes three nozzles, a cover plate (4) and a bottom plate (5); the three nozzles include an upper nozzle (6), a middle nozzle (7) and a lower nozzle Nozzle (8); the upper nozzle (6), the middle nozzle (7) and the lower nozzle (8) are sequentially arranged on the bottom plate (5) from top to bottom, and the cover plate (4) is set on the middle nozzle (7) and close the middle nozzle (7); The lock body (2) includes two door lock pin fixing blocks (9), crank shaft sleeve (10), crank (11), crank sleeve (12), door lock pin (13), spring (14) and spring fixing block (15); the two door lock pin fixing blocks (9) are fixed on the inner surface of the door, and the door lock pin (13) is inserted into the two door lock pin fixing blocks (9) and can slide linearly in the two door lock pin fixing blocks (9); the spring (14) is sheathed on the door lock pin (13), and one end of the spring (14) is fixed On the spring fixing block (15), the spring fixing block (15) is fixed on the door lock pin (13), and the spring fixing block (15) and the spring (14) are all arranged on the Between the two door lock pin fixing blocks (9); one end of the crank (11) is provided with a waist-shaped hole (16), through which a hinged shaft (17) passing through the waist-shaped hole (16) and The door lock pin (13) is hinged, and the other end of the crank (11) is provided with a through hole (18), and the crank shaft sleeve (10) passes through the door (19) and is inserted into the In the through hole (18), the crank sleeve (12) is fixed on one end of the door of the crankshaft sleeve (10), and the crank (11), crankshaft sleeve (10) and crank sleeve The seats (12) are fixedly connected; the crank cover (12) is provided with an inwardly recessed draw-in slot (20), and the draw-in slot (20) is located at the far side of the crank cover (12) on the side of one side of the crank (11); The key (3) includes a gear seat cylinder (21), an inner ejector pin (22), a handle (23) and a retractable pin (24); the first end of the inner ejector pin (22) is inserted into the tooth seat In the cylinder (21), the second end of the inner ejector pin (22) is provided with a perforation (25) and the handle (23) passes through the perforation (25); the telescopic pin (24) has Two, two telescopic pins (24) are all arranged in the tooth seat cylinder (21); when the inner ejector pin (22) is inserted into the tooth seat cylinder (21) and the telescopic pin (24) When abutting against each other, the telescopic pin (24) is rotated and one end of the telescopic pin (24) protrudes out of the tooth seat cylinder (21); After the key (3) is inserted into the crank shaft sleeve (10) of the lock body, the handle (23) pushes the inner push pin (22), and the inner push pin (22) pushes the telescopic pin (24) to extend Out of the tooth seat cylinder (21); turn the key (3) at this time, so that the telescopic pin (24) of the key (3) can be inserted into the card slot (20) of the crank sleeve (12), and then Turning the key (3) drives the crank (11) to rotate, thereby driving the door lock pin (13) to move linearly, thereby opening the door lock. 2. The closed mechanical anti-theft door lock according to claim 1, characterized in that, the end of the tooth seat cylinder (21) away from the telescopic pin (24) is provided with a groove; when the inner ejector pin (22) ) is inserted into the tooth seat cylinder (21) and the telescopic pin (24) is pushed out of the tooth seat cylinder (21), the handle (23) is just snapped into the groove. 3. The closed mechanical anti-theft door lock according to claim 1, characterized in that, the telescopic pin (24) is L-shaped, and the telescopic pin (24) is connected to the first end of the inner ejector pin (22). The abutting part is arc-shaped; the end of the first end of the inner ejector pin (22) is also arc-shaped.