JP3052438U - Door lock - Google Patents

Abstract

(57) [Summary] [Problem] To provide a door lock having a high anti-prying effect. SOLUTION: One interlocking component 17 is combined inside a latch bolt 16 of a door lock, and one first lock pin 20 is connected to a pin hole of the latch bolt and a sliding groove 19 of the interlocking component.
And the interlocking part is connected to one second lock pin 21.
The guide bolts are connected to the dead bolts 22, and one guide groove 23 is provided on the dead bolt, the first lock pin is further combined with the guide groove, and one locking projection 24 is provided in the guide groove of the dead bolt. If the latch bolt is forcibly moved inward by an external force, the first lock pin engages with the locking protrusion in the guide groove of the dead bolt, and the dead bolt cannot be retracted into the latch bolt. It is designed to prevent prying.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a type of door lock, and more particularly, to a door lock structure having a high anti-prying effect.

[0002]

[Prior art]

 Known door locks are usually provided with dead bolts together with latch bolts to enhance the anti-theft effect. However, such door locks are often broken open, and the anti-theft safety effect is ideal. It wasn't the point and needed to be improved.

[0003]

[Problems to be solved by the invention]

 An object of the present invention is to provide a door lock having a high prying prevention effect.

[0004]

[Means for Solving the Problems]

 The invention of claim 1 has one casing 10, a face plate 13 is provided at one end of the casing 10, one hole 14 is provided in the face plate 13, and a latch bolt 16 is combined with the hole 14. An interlocking component 17 is slidably moved back and forth inside the latch bolt 16, and one first lock pin 20 is inserted into a pin hole 18 of the latch bolt 16 and a sliding groove 19 of the interlocking component 17. The latch bolt 16 and the interlocking component 17 are connected to each other to be integrated. One dead bolt 22 is connected to the interlocking component 17 by one second lock pin 21, and a guide groove 23 penetrating the dead bolt 22 is provided. The first lock pin 20 is assembled into the guide groove 23, and one locking projection 24 is provided in the guide groove 23 so as to protrude. A first spring 25 is combined with the lock pin 21 and is used to push the dead bolt 22 to protrude from the latch bolt 16. The rear end of the interlocking member 17 protrudes from the latch bolt 16 and one The bolt support member 26 is connected to the bolt support member 26, the bolt support member 26 is housed in the casing 10, and a second spring 28 is provided between the bolt support member 26 and the latch bolt 16. A third spring 29 is provided between the bolt supporting member 26 and the casing 10 for pushing and extending the latch 16, and the third spring 29 pushes the bolt supporting member 26 to extend the latch bolt 16 by interlocking. A positioning piece 31 is provided on each of the left and right sides of the bolt support member 26 so as to protrude. One interlocking case 34 is connected to the casing 10 to be freely combined with the casing 10, and the rotation of the interlocking case 34 pushes and moves the bolt support member 26 so that the latch bolt 16 interlocks and retracts. The door lock has the above configuration.

The invention of claim 2 is characterized in that the casing 10 is formed by connecting one first half case 11 and one second half case 12 and fixing them with screws 15. The door lock is described.

The invention according to claim 3 is the door lock according to claim 1, wherein the latch bolt 16 has an inclination angle.

The invention according to claim 4 is the door lock according to claim 1, wherein the guide groove 23 has an arc shape.

The invention according to claim 5 is the door lock according to claim 1, characterized in that a drop-off preventing portion 27 is provided at a rear end of the interlocking component 17.

[0009] The invention according to claim 6 is characterized in that the third spring 29 is mounted between the bolt supporting member 26 and one convex piece 30 in the casing 10. I'm locked.

According to the invention of claim 7, a positioning piece 31 is provided on two sides of the bolt support member 26 so that the two positioning pieces 31 can slide freely into positioning grooves 32 on two sides of the casing 10. The door lock according to claim 1, wherein the door lock is combined.

The invention according to claim 8 is the door lock according to claim 1, wherein a protection cylinder 36 is fitted to the outside of the bolt support member 26.

[0012]

[Embodiment of the invention]

 According to the door lock of the present invention, one interlocking component is combined inside the latch bolt of the door lock, and one first lock pin is combined with the pin hole of the latch bolt and the sliding groove of the interlocking component. The parts are separately connected to the dead bolt by one second lock pin, one guide groove is provided on the dead bolt, and the first lock pin is further combined with the guide groove, and one guide groove is provided in the guide groove of the dead bolt. A locking projection is provided, and if the latch bolt is forcibly moved inward by an external force, the first locking pin engages with the locking projection in the guide groove of the dead bolt, and the dead bolt is engaged with the latch bolt. When the latch bolt is pressed by an external force, the latch bolt does not retract into the casing, so that a good anti-prying effect can be achieved. Yes and, consisting of the above configuration.

[0013]

【Example】

 1, 2 and 3 are a partially exploded perspective view, an exploded perspective view and an operation display diagram of the present invention. As shown in these figures, the door lock of the present invention has one casing 10, which is composed of one first half case 11 and one second half case 12; A face plate 13 is provided at one end of the first half case body 11, one face hole 14 is provided in the face plate 13, and the first half case 11 and the second half case 12 are connected by one screw 15 and Fixed.

A latch bolt 16 having an appropriate inclination angle is combined in a bore 14 of the face plate 13 of the casing 10, and an interlocking part 17 is slidably assembled in the latch bolt 16 so as to be slidable back and forth. One pin hole 18 is provided in the left and right direction, a horizontal sliding groove 19 is provided at a position corresponding to the pin hole 18 of the interlocking component 17, and one first lock pin 20 is provided with a pin hole of the latch bolt 16. As a result, the latch bolt 16 and the interlocking component 17 are connected and integrated by the first lock pin 20. Separately, one protective cylinder 36 is fitted to the outside of the latch bolt 16, a plurality of locking portions 38 are provided on the protective cylinder 36, and the latch cylinder 16 is engaged with the latch bolt 16 so as to correspond to the locking portion 38. A stop groove 37 is provided, and the protection cylinder 36 is firmly coupled to the latch bolt 16 by the engagement of the locking portion 38 and the locking groove 37, but the first lock pin 20 is removed to break the door lock. It is made to be able to prevent. One dead bolt 22 is further connected to the interlocking component 17 by one second lock pin 21. The dead bolt 22 can swing about the second lock pin 21 as a fulcrum, and the dead bolt 22 has an arc-shaped guide groove 23. The first lock pin 20 is combined with the guide groove 23 of the dead bolt 22 so that when the dead bolt 22 swings, the combination of the guide groove 23 and the first lock pin 20 enables stable movement. One locking projection 24 is provided in the guide groove 23 of the dead bolt 22, and a first spring 25 (torsion spring) is attached to the second lock pin 21 rotatably connected to the dead bolt 22. The first spring 25 is used to push the dead bolt 22 to perform a swing projecting from the latch bolt 16.

The rear end of the interlocking component 17 protrudes from the latch bolt 16 and is combined with a single bolt support member 26 having a U-shape in plan view. The bolt support member 26 is housed in the casing 10 and interlocked. At the rear end of the component 17, an appropriate fall-off preventing portion 27 is provided, and the rear end of the interlocking component 17 is firmly connected to the bolt supporting member 26 by the falling-off preventing portion 27. One second spring 28 is provided between the bolt supporting members 26 to protrude the latch bolt 16, and one third spring 29 is provided inside the bolt supporting member 26. The third spring 29 is placed between the front end of the member 26 and one of the convex pieces 30 in the casing 10 and pushes the bolt supporting member 26 to project the latch bolt 16 in conjunction therewith. Positioning pieces 31 protruding from the left and right sides of the bolt support member 26 are provided, and the two positioning pieces 31 are slidably combined into two positioning grooves 32 on the left and right sides of the casing 10. The connection case 33 is connected to an interlocking case 34 connected to a door knob (not shown in the drawing), and the rotation of the interlocking case 34 pushes and moves the bolt support member 26 so that the latch bolt 16 is interlocked and retracted. As described above, the door lock structure of the present invention having the effect of preventing prying is completed.

FIGS. 3, 4, and 5 are operation display diagrams in different states of the present invention. When the latch bolt 16 is advanced into the seat 35 of the door frame, in the initial state, the dead bolt 22 is retracted into the latch bolt 16 under the pressure of the seat 35, and the latch bolt 16 is also seated. It is retracted into the face plate 13 of the casing 10 under the pressure of 35 (see FIG. 3). When the latch bolt 16 starts to enter the seat 35 of the door frame, the latch bolt 16 extends by the action of the second spring 28 and the third spring 29, the latch bolt 16 enters the seat 35, and the dead bolt 22 protrudes from the latch bolt 16 by the action of the first spring 25 (see FIG. 4). The protruding dead bolt 22 locks the seat 35 of the door frame in the same manner as a general hook, and is used when the throat tries to move the latch bolt 16 inward (backward) (as shown in FIG. 5). ), The first lock pin 20 combined with the latch bolt 16 moves rearward along the sliding groove 19 of the linking component 17, and the first lock pin 20 is locked in the guide groove 23 of the dead bolt 22. 24, and the dead bolt 22 is locked and cannot be retracted into the latch bolt 16, so that a prying prevention effect is achieved. Since it does not shrink into the casing 10, a good anti-theft safety effect is achieved.

[0017]

[Effect of the invention]

 Taken together, the present invention improves upon the fact that the conventional door locks have insufficient prying-prevention effects, and therefore can be said to be excellent practicality and novelty.

[Brief description of the drawings]

FIG. 1 is a partially exploded perspective view of the present invention.

FIG. 2 is an exploded perspective view of the present invention.

FIG. 3 is an operation display diagram of the present invention.

FIG. 4 is an operation display diagram of the present invention.

FIG. 5 is an operation display diagram of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Casing 11 1st half case 12 2nd half case 13 Face plate 14 Drilling 15 Screw 16 Latch bolt 17 Interlocking part 18 Pin hole 19 Sliding groove 20 1st lock pin 21 2nd lock pin 22 Dead bolt 23 Guide groove 24 Lock Convex part 24 25 First spring 26 Bolt support member 27 Fall prevention part 28 Second spring 29 Third spring 30 Convex piece 31 Positioning piece 32 Positioning groove 33 Connecting hole 34 Interlocking case 35 Receiving seat 36 Protective cylinder 37 Lock groove 38 Stop

Claims (8)

[Utility model registration claims] 1. One casing 10 has a face plate 13 provided at one end of the casing 10, one face hole 14 is provided in the face plate 13, and a latch bolt 16 is combined with the hole 14 An interlocking part 17 is slidably movable back and forth inside the latch bolt 16.
And the one first lock pin 20 is combined with the pin hole 18 of the latch bolt 16 and the sliding groove 19 of the interlocking component 17, so that the latch bolt 16 and the interlocking component 17 are combined.
Are connected and integrated, and one second
One dead bolt 22 is connected with the lock pin 21,
A guide groove 23 penetrating through the dead bolt 22 is provided, a first lock pin 20 is combined with the guide groove 23, and one locking projection 24 is provided in the guide groove 23 so as to protrude. The first spring 25 is combined with the pin 21, and the first spring 25 is used to push the dead bolt 22 to project from the latch bolt 16, and the interlocking component 17
The rear end projects from the latch bolt 16 and is connected to one bolt support member 26. The bolt support member 26 is accommodated in the casing 10 and the bolt support member 2
A second spring 28 is provided between the bolt 6 and the latch bolt 16. The second spring 28 is used to push and extend the latch bolt 16, and a third spring 29 is provided between the bolt support member 26 and the casing 10. The third spring 29 is used to push the bolt supporting member 26 to extend the latch bolt 16 in conjunction with the bolt supporting member 26. 26 are slidably assembled in the casing 10, and one interlocking case 34 is connected to the casing 10.
The door lock is constructed so as to be pushed and moved so that the latch bolt 16 is retracted in conjunction therewith. 2. The door lock according to claim 1, wherein the casing is formed by connecting one first half case and one second half case to each other and fixing them with screws. 3. The door lock according to claim 1, wherein the latch bolt has an inclination angle. 4. The door lock according to claim 1, wherein the guide groove has an arc shape. 5. A falling-off preventing portion 2 is provided at a rear end of the interlocking component 17.
7. The door lock according to claim 1, wherein a door is provided. 6. The third spring 29 is connected to the bolt support member 26.
The door lock according to claim 1, wherein the door lock is mounted between the housing and one convex piece 30 in the casing 10. 7. A positioning piece (31) is provided on two sides of the bolt support member (26), and the two positioning pieces (31) are slidably combined in positioning grooves (32) on the two sides of the casing (10). The door lock according to claim 1, wherein 8. The door lock according to claim 1, wherein a protection cylinder is fitted outside the bolt support member.