CN108590352B

CN108590352B - Anti-picking lock

Info

Publication number: CN108590352B
Application number: CN201810145133.6A
Authority: CN
Inventors: 陈满林; 袁帅
Original assignee: Individual
Current assignee: Foshan Aosenmu Door & Window Technology Co ltd
Priority date: 2018-02-12
Filing date: 2018-02-12
Publication date: 2020-06-26
Anticipated expiration: 2038-02-12
Also published as: CN108590352A

Abstract

The invention belongs to the technical field of door and window locks. The problem of the square rod in the handle center square hole of prior art remain throughout to stretch out and draw back in the outside of base is solved. The anti-prying lock comprises a lock body (1) capable of being mounted on a door and a window, wherein a shaft hole (2) is formed in the lock body (1), a rotating shaft (4) capable of rotating is arranged in the shaft hole (2), a tongue hole (5) axially arranged in the rotating shaft (4), a lock tongue (6) is arranged in the tongue hole (5), the lock tongue (6) is provided with a pin (7) radially arranged, an inclined hole (8) is formed in the wall of the rotating shaft (4), a longitudinal limiting groove (9) is formed in the wall surface of the shaft hole (2), and the length of the pin (7) can pass through the inclined hole (8) to the longitudinal limiting groove (9). The rotation of the handle (3) can make the bolt (6) extend out from the lock body (1) to form locking and unlocking. The lock tongue can not be moved along the axial direction when being stirred, thereby realizing the function of prying prevention.

Description

Anti-picking lock

Technical Field

The invention belongs to the technical field of door and window locks.

Background

The rotatable handle disclosed in the utility model patent document entitled rotatable handle, which is a chinese patent, publication No. CN205206478U, includes a base for being mounted on a door or a window, the base is provided with an inner side surface, an outer side surface, and a through hole penetrating through the two surfaces; a handle for twisting; the handle is provided with a end face, the end face is provided with a circular groove, a circular pipe is arranged on the outer side face of the periphery of the through hole and is positioned in the circular groove, a stop block is arranged on the end face of the inner side of the circular groove, and the stop block is stopped on the inner side face of the base. The handle center is equipped with a square hole, is equipped with a square rod in the square hole, and the square rod passes through the square hole to be fixed on hand, and when rotating the handle, the handle rotates thereupon, can be used for driving other unlocking mechanism. The problem that the square rod in the central square hole of the handle always extends out of the base and cannot stretch out and draw back exists.

Disclosure of Invention

The invention aims to provide an anti-pick lock with a bolt capable of stretching along with the rotation of a handle.

In order to achieve the purpose of the invention, the anti-pry lock comprises a lock body which can be installed on a door and a window, wherein the lock body is provided with a shaft hole, a rotating shaft which can rotate in the shaft hole is arranged in the shaft hole, a tongue hole which is axially arranged is arranged in the rotating shaft, a lock tongue is arranged in the tongue hole, the lock tongue is provided with a pin which is radially arranged, the wall of the rotating shaft is provided with an inclined hole, the wall surface of the shaft hole is provided with a longitudinal limiting groove, and the length of the pin can penetrate through the inclined hole to the longitudinal limiting groove.

When the handle is turned, the spindle is rotatable about the axis in the spindle bore. And the locking tongue can move axially in the tongue hole. When the handle drives the rotating shaft to rotate, the pin is clamped in the longitudinal limiting groove and cannot rotate, so that the lock tongue cannot rotate, the inclined hole arranged on the rotating shaft rotates along with the rotating shaft, the pin is pressed by one side edge of the inclined hole and moves in the longitudinal limiting groove, and the lock tongue is driven to move along the axial direction. If the handle is rotated clockwise, the bolt can extend out of the bolt hole, and if the handle is rotated counterclockwise, the bolt can retract into the bolt hole. If an external force is applied to drive the lock tongue in the longitudinal direction, the lock tongue cannot move in the longitudinal direction, namely, when a knife or a sheet is inserted into a gap between a door or a window, the knife or the sheet is used for poking the lock tongue and cannot move along the axial direction, so that the anti-prying function is realized.

Drawings

Fig. 1 is a structural view of the anti-picking lock of the present invention.

Fig. 2 is a sectional view a-a in fig. 1.

Fig. 3 is a sectional view taken along line B-B in fig. 1.

Fig. 4 is an assembled structural view of the anti-picking lock of the present invention, viewed from an angle.

Fig. 5 is a view showing the structure of the handle in fig. 4.

Fig. 6 is an assembled structural view of the anti-pick lock of the present invention, viewed from another angle.

Fig. 7 is a front initial state diagram of the anti-pick lock of the present invention.

Fig. 8 is a perspective view of an initial state.

Fig. 9 is a partial cross-sectional view of fig. 8.

Fig. 10 is a state view of the handle of fig. 7 after being rotated by 45 degrees.

Fig. 11 is a state view of the handle of fig. 9 after being rotated 45 degrees.

Fig. 12 is a state view of the handle of fig. 7 after being turned 90 degrees.

Fig. 13 is a state view of the handle of fig. 9 after being turned 90 degrees.

Fig. 14 is a state view of the handle of fig. 7 after being rotated 135 degrees.

Fig. 15 is a state view of the handle of fig. 9 after being rotated 135 degrees.

Fig. 16 is a state view of the handle of fig. 7 after being rotated 180 degrees.

Fig. 17 is a state view of the handle of fig. 9 after being turned 180 degrees.

Detailed Description

The following detailed description of the embodiments of the anti-picking lock of the present invention is made with reference to the accompanying drawings:

as shown in fig. 1 and 2, the anti-picking lock of the present invention includes a metal lock body 1 which can be installed on a door or window and has a certain strength, and the lock body 1 can be formed by die casting of aluminum, copper, etc. or cast iron. The lock body 1 is provided with a circular shaft hole 2, a rotating shaft 4 which is connected with the handle 3 into a whole is arranged in the shaft hole 2, and the rotating shaft 4 can rotate around the shaft axis in the shaft hole 2, as shown by a dotted line in figure 2. The rotating shaft 4 is provided with a circular tongue hole 5 which is axially arranged, and the rotating shaft 4 is of a tubular structure with a certain wall thickness. The bolt hole 5 is internally provided with a round bolt 6 with the diameter matched with the bolt hole, and the bolt 6 can rotate and move along the axial direction in the bolt hole 5.

The side wall of the bolt 6 is provided with a round pin 7 protruding outwards, the cylindrical bolt 6 is provided with a pin hole 22 penetrating in the radial direction, and a round rod is placed in the pin hole 22, so that two ends of the round rod protrude outwards to form the pin 7 arranged on the bolt 6. The wall of the rotating shaft 4 is provided with an inclined hole 8, the inclined hole 8 is to spread and flatten the wall of the rotating shaft 4, and the inclined hole 8 is long and forms a certain included angle with the axis. The wall surface of the shaft hole 2 is provided with a sunken longitudinal limiting groove 9, the length of the pin 7 can pass through the inclined hole 8 to the longitudinal limiting groove 9, and the pin 7 can move along the groove in the longitudinal limiting groove 9.

As shown in fig. 7 to 9, this state is an initial state before the anti-theft lock is locked, and fig. 9, 11, 13, 15, and 17 are partial sectional views of the upper body 13 of the lock body 1, which are partially sectioned. The broken lines in figures 7, 10, 12, 14, 16 show a schematic view of a C-profile with a bayonet 19 mounted on an adjacent door or window, the lock body 1 being held at a distance from the bayonet 19.

The section line of the upper body 13 shows that the tail end of the longitudinal limiting groove 9 is communicated with the head end of the arc limiting groove 10. The pin 7 is arranged at the head end of the longitudinal limiting groove 9, and the flange 17 on the rotating shaft 4 is arranged in the semi-circular-arc clamping groove 16. Therefore, the rotating shaft 4 is always in the shaft hole 2 and does not move along the axial direction no matter how the handle 3 rotates.

When the handle 3 is turned, the spindle 4 will rotate around the axis in the spindle hole 2. The pin 7 is blocked in the longitudinal limiting groove 9 and cannot rotate, so the lock tongue 6 cannot rotate, but the inclined hole 8 rotates along with the rotating shaft 4, and the pin 7 is pressed by one side edge of the inclined hole 8 to move in the longitudinal limiting groove 9, so that the lock tongue 6 is driven to move along the axial direction.

If the handle 3 is rotated clockwise, the latch tongue 6 may extend out of the tongue hole 5, and if the handle 3 is rotated counterclockwise, the latch tongue 6 may retract into the tongue hole 5. If an external force is applied to drive the lock tongue 6 in the longitudinal direction, the lock tongue 6 cannot move in the longitudinal direction, that is, when a knife or a sheet is inserted into a gap between a door and a window, the lock tongue 6 cannot move in the axial direction when being stirred, so that the anti-prying function is realized.

The wall surface of the shaft hole 2 is provided with an arc-shaped limiting groove 10, and one end of the longitudinal limiting groove 9 is communicated with one end of the arc-shaped limiting groove 10 to form an L-shaped limiting groove. The length of the pin 7 can pass through the inclined hole 8 to the arc-shaped limiting groove 10, and the outer end of the bolt 6 is provided with a blocking part 11.

If the handle 3 rotates clockwise, the rotating shaft 4 rotates along with the rotating shaft, the inclined hole 8 presses the pin 7 on the bolt 6, so that the bolt 6 extends out of the bolt hole 5 until the pin 7 moves outwards to the end in the longitudinal limiting groove 9. When the handle 3 is rotated clockwise, the pin 7 enters the arc-shaped limiting groove 10 and moves along the arc-shaped limiting groove 10, and the bolt 6 rotates along with the rotation of the pin 7. The stop part 11 rotates along with the lock tongue 6, and the stop part 11 is inserted into the bayonet 19 of the other door or window along with the lock tongue 6 and then rotates to a position to stop at the inner side of the bayonet 19, so that two adjacent doors or windows are connected together. And rotate counterclockwise to separate them. The bayonet 19 can be a through-hole in the side profile of the other door or window, which allows the stop 11 to enter and the stop 11 to be blocked inside after the rotation of the stop 11. It is also possible to have a C-profile mounted on the side of another door or window, with a long opening, i.e. a bayonet 19, on one side of the C-profile, as shown in fig. 4 and 6, only one section of which is shown for illustration. The locking device is composed of an anti-pick lock and a bayonet 19 which are respectively arranged on two adjacent doors or windows, and the two doors or windows can be connected, clamped and released by rotating the handle 3.

The arc-shaped limiting grooves 10 are distributed and arranged in the radian range of 0-pi/2. The pin 7 moves in the arc-shaped limiting groove 10 in the whole course, and the rotating shaft 4 rotates 90 degrees. The movement of the pin 7 in the arc-shaped limiting groove 10 can cause the stop part 11 on the bolt 6 to rotate, and the rotation angle can be limited within the range of 90 degrees.

When a user opens the door, the user only needs to see that the handle 3 rotates 90 degrees, which means that the blocking part 11 on the bolt 6 rotates 90 degrees, and at the moment, the blocking part 11 is completely blocked at the inner side of the bayonet 19 of another door or window, so that the user can conveniently hold the rotating scale in the opening operation process.

The inclined holes 8 are distributed and arranged in the radian range of 0-pi/2. The pin 7 moves in the arc-shaped limiting groove 10 in the whole course, and the rotating shaft 4 rotates 90 degrees. When a user opens the lock, the user only needs to see that the handle 3 rotates by 90 degrees, and the bolt 6 completely extends out of the bolt hole 5, so that the user can conveniently hold the rotating scale in the opening operation process.

The number of the pins 7 is two, the two pins 7 are symmetrically arranged, and the number of the inclined holes 8 is two. The two pins 7 can simultaneously push the bolt 6 to move back and forth or rotate from two sides, so that the bolt 6 can move smoothly in the bolt hole 5 and is not easy to be blocked. During manufacturing, a pin hole can be radially arranged on the bolt 6, a cylindrical rod is placed in the pin hole, and two ends of the cylindrical rod are exposed outside for a certain length to form two pins 7. The manufacture and the assembly are simple and quick.

The pin 7 is provided with a roller 12, and the roller 12 is positioned in the inclined hole 8. When the bolt 6 moves in the bolt hole 5, the roller 12 on the bolt will press against the side wall of the inclined hole 8 and rotate, thus reducing the friction between the pin 7 and the side wall of the inclined hole 8, smoothing the movement of the bolt 6 and reducing the abrasion between the pin 7 and the inclined hole 8. The roller 12 adopts a sleeve, and the sleeve is sleeved from the outer end of the pin 7 during assembly, so that the manufacture and the assembly are simple and rapid.

The pin 7 is provided with a roller 12, and the roller 12 is positioned in the longitudinal limiting groove 9. Likewise, the arrangement of the roller 12 reduces the wear between the pin 7 and the longitudinal restraining groove 9.

The lock body 1 is arranged into an upper body 13 and a lower body 14 along the axial lead of the shaft hole 2, the corresponding positions of the upper body 13 and the lower body 14 are respectively provided with a semicircular groove 15, the two semicircular grooves 15 are folded to form the shaft hole 2, the longitudinal limit groove 9 is arranged at the central position of the semicircular groove 15, and the arc limit groove 10 is arranged in the semicircular groove 15. The lock body 1 can be manufactured in two parts, so that the shaft hole 2 and the longitudinal limiting groove 9 can be conveniently formed at one time. For example, the shaft hole 2 and the longitudinal limiting groove 9 are machined by adopting a machining process, or the shaft hole 2 and the longitudinal limiting groove 9 can be formed by adopting an injection molding process, and the design is convenient for demolding in the injection molding process for manufacturing products. During assembly, the rotating shaft 4 is placed in the semicircular groove 15 firstly, then the upper body 13 and the lower body 14 are folded and fixed, the rotating shaft 4 is positioned in the shaft hole 2, and the pin 7 is also arranged in the longitudinal limiting groove 9, so that the manufacturing and the assembly are simple and rapid.

The two semicircular grooves 15 are respectively provided with a semicircular arc clamping groove 16 at corresponding positions, and the rotating shaft 4 is provided with a flange 17 which can be arranged in the semicircular arc clamping grooves 16. When the upper body 13 and the lower body 14 are folded together, the two semicircular slots 16 form an annular slot in the shaft hole 2, the flange 17 is annular and can rotate around the axis in the annular slot, and the rotating shaft 4 cannot move in the shaft hole 2 along the axis direction due to the limitation of the flange 17 and the annular slot.

The bolt 6 is provided with a round pipe 18, and the round pipe 18 can rotate around an axis on the bolt 6. A step is arranged on the bolt 6, and the blocking part 11 is a piece of blocking plate, and the width of the blocking plate is smaller than that of the bayonet 19 so as to extend into the bayonet 19. The length is longer than the bayonet 19, and when the bolt 6 rotates for a certain angle, the baffle plate can be clamped on the inner side of the bayonet 19. The shield is fixed to the end of the bolt 6 by a screw 20. This configuration facilitates manufacture and installation of the bolt 6, barrel 18 and stop 11.

When two adjacent doors or windows are combined together and an interval is formed between the two adjacent doors or windows, if the locking device of the anti-picking lock arranged on the door or window is in a locking state, the pliers are inserted into the interval and then only can clamp the circular tube 18, at the moment, the pliers are rotated, the circular tube 18 can only rotate around the bolt 6, the bolt 6 cannot rotate, the blocking part 11 on the bolt 6 is always blocked at the inner side of the bayonet 19, and the two adjacent doors or windows are kept hooked together. Therefore, the round tube 18 on the bolt 6 can effectively prevent the bolt 6 from being opened by manually extending into the space lifting bolt 6 from the outside of the door or the window by using a tool, and the bolt 6 can only rotate through the rotation of the handle 3 arranged on the inner side of the door or the window, so that the anti-theft door has a good anti-theft effect.

In the initial state, as shown in fig. 7 and 9, the pin 7 is at the head end of the longitudinal restraining groove 9, and at the same time, the pin 7 is also in the head end position in the inclined hole 8. The handle 3 of the bolt 6 in the lock body 1 is on the same plane with the lock body 1.

When the handle 3 is turned 45 degrees, as shown in fig. 10 and 11, the pin 7 moves to the intermediate position in the longitudinal restraining groove 9 under the pressing of the side wall of the inclined hole 8, and at the same time, the pin 7 also moves to about the intermediate position in the inclined hole 8. At this time, it can be seen from the figure that a part of the bolt 6 extends out of the lock body 1, and an included angle of 45 degrees is formed between the handle 3 and the lock body 1.

When the handle 3 is rotated by 90 degrees, as shown in fig. 12 and 13, the pin 7 moves in the longitudinal direction limiting groove 9 to the trailing end position or the leading end position of the arc-shaped limiting groove 10 under the pressing force of the side wall of the inclined hole 8, and at the same time, the pin 7 also moves in the inclined hole 8 to the trailing end position. A bent part is arranged at the tail end of the inclined hole 8 and used for guiding the pin 7 to enter the head end position of the arc-shaped limiting groove 10 from the longitudinal limiting groove 9. At this time, it can be seen from the figure that the bolt 6 is completely extended out of the lock body 1, and the handle 3 and the lock body 1 form an included angle of 90 degrees.

When the handle 3 is rotated 135 degrees, as shown in fig. 14 and 15, the pin 7 is kept at the tail end position of the inclined hole 8, and the pin 7 is pressed down by the side wall at the tail end of the inclined hole 8 and moves to the middle position in the arc-shaped limiting groove 10, at this time, it can be seen that the bolt 6 is kept completely extended out of the lock body 1, and the stop part 11 thereon is rotated by about 45 degrees, and an included angle of 135 degrees is formed between the handle 3 and the lock body 1.

When the handle 3 is rotated 180 degrees, as shown in fig. 16 and 17, the pin 7 is kept at the tail end position of the inclined hole 8, and the pin 7 is pressed down by the side wall at the tail end of the inclined hole 8 and moves in the arc-shaped limiting groove 10 to the tail end position, at this time, it can be seen that the bolt 6 is kept completely extended out of the lock body 1, and the stop part 11 thereon is rotated about 90 degrees, and an angle of 180 degrees is formed between the handle 3 and the lock body 1.

When the handle 3 rotates, no matter the handle rotates forwards or backwards, the two side walls of the inclined hole 8 on the rotating shaft 4 and the end walls of the head and the tail end of the inclined hole press against the pin 7, so that the pin 7 moves in the longitudinal limiting groove 9 and the arc-shaped limiting groove 10, and the bolt 6 can extend out of the lock body 1 and then rotate, or rotate and then retract into the lock body 1, thereby forming the locking and unlocking functions. The arc-shaped limiting groove 10 and the inclined hole 8 are distributed and arranged in the radian range of 0-pi/2, and a user can judge that the bolt 6 extends out as long as seeing that the handle 3 rotates from an upward vertical position to a horizontal position. And the bolt 6 can be judged to be in a retracted state by seeing the handle 3 in an upward vertical position. When the handle 3 is rotated to the horizontal position, the bolt 6 can be judged to be in the extending state. When the handle 3 is rotated to a downward vertical position, it can be determined that the latch bolt 6 is in an extended state, and the stop portion 11 of the latch bolt 6 is rotated at an angle inside the bayonet 19, and can be locked on the bayonet 19 without being released.

Claims

1. An anti-pry lock comprises a lock body (1) capable of being mounted on a door and a window, wherein a shaft hole (2) is formed in the lock body (1), a rotating shaft (4) capable of rotating in the shaft hole (2) is arranged in the shaft, and the anti-pry lock is characterized in that a tongue hole (5) is axially formed in the rotating shaft (4), a bolt (6) is arranged in the tongue hole (5), the bolt (6) is provided with a pin (7) which is radially arranged, the wall of the rotating shaft (4) is provided with an inclined hole (8), the wall surface of the shaft hole (2) is provided with a longitudinal limiting groove (9), and the length of the pin (7) can penetrate through the inclined hole (8) to the longitudinal limiting groove (9); an arc-shaped limiting groove (10) is formed in the wall surface of the shaft hole (2), one end of the longitudinal limiting groove (9) is communicated with one end of the arc-shaped limiting groove (10), the length of the pin (7) can penetrate through the inclined hole (8) to reach the arc-shaped limiting groove (10), and a blocking part (11) is arranged at the outer end of the lock tongue (6); lock body (1) set up upper part of the body (13) and lower part of the body (14) along the axial lead in shaft hole (2), upper part of the body (13) and lower part of the body (14) correspond the position and have semicircular groove (15) respectively, two semicircular grooves (15) are foldd and can be formed shaft hole (2), vertical spacing groove (9) set up the central point in semicircular groove (15) and put, arc spacing groove (10) set up in semicircular groove (15).

2. The pick-proof lock as claimed in claim 1, wherein the arc-shaped limiting grooves (10) are distributed and arranged in the radian range of 0-pi/2.

3. Anti-picking lock according to claim 1 or 2, characterised in that the inclined holes (8) are distributed in the range of 0-pi/2 radians.

4. Anti-picking lock according to claim 1 or 2, characterised in that there are two pins (7), two pins (7) being arranged symmetrically and two corresponding inclined holes (8).

5. Anti-picking lock according to claim 1 or 2, characterised in that the pin (7) is provided with a roller (12), the roller (12) being located in the angled hole (8).

6. Anti-picking lock according to claim 1 or 2, characterised in that the pin (7) is provided with a roller (12), the roller (12) being located in a longitudinal limiting groove (9).

7. The anti-picking lock as claimed in claim 1, wherein the two semi-circular grooves (15) are respectively provided with a semi-circular groove (16) at corresponding positions, and the rotating shaft (4) is provided with a flange (17) capable of being placed in the semi-circular groove (16).

8. Anti-picking lock according to claim 1 or 2, characterised in that the bolt (6) is provided with a circular tube (18), said circular tube (18) being rotatable about an axis on the bolt (6).