A lock body anti-riot device

Abstract

The present invention relates to a lock body anti-riot device, which comprises an inner square rod, an outer square rod and an inner connecting piece, a shaft sleeve is arranged in the lock body, and the shaft sleeve has an insertion hole; the outer square rod and the inner square rod are inserted in the insertion hole; under the action of a first spring, the inner square rod maintains the tendency of its second end to continuously move toward the insertion hole, and the inner square rod is provided with a locking groove; under the action of a second spring, the locking pin maintains the tendency of its first end to continuously move toward the insertion hole; when the first end of the outer square rod is pulled out of the insertion hole, the inner square rod continues to move toward the insertion hole under the action of the first spring until the first end of the locking pin is inserted into the locking groove and is prevented from retreating. The advantage of the present invention is that when the outer panel and the outer square rod are removed, the inner square rod moves outward to block the insertion hole of the shaft sleeve, and the shaft sleeve cannot be rotated even if a tool is used outside, thereby achieving the effect of preventing violent unlocking.

Description

Technical Field

[0001] The invention relates to a lock body anti-riot device. Background Art

[0002] The lock body of a traditional lock is generally connected to an inner or outer handle by inserting a square rod through the lock body. The lock can be unlocked by turning the handle to link the transmission mechanism of the lock body. However, if the outer handle and the outer panel are forcibly removed by some destructive means, the lock can be easily unlocked by directly twisting the square hole on the lock body with ordinary tools, which has a great safety defect. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a lock body anti-riot device.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A lock body anti-riot device comprises an inner square rod and an outer rod, the first end of the inner square rod is connected to an inner connecting piece, and is characterized in that a shaft sleeve is arranged in the lock body, and the shaft sleeve has a plug-in hole that passes through the front and rear end surfaces; the first end of the outer rod and the second end of the inner square rod are respectively plugged into the plug-in hole from the front end and the rear end of the shaft sleeve; a first spring is arranged between the first end of the inner square rod and the inner connecting piece, and under the action of the first spring, the inner square rod maintains the tendency of its second end to continuously move in the direction of the plug-in hole, and a locking groove is arranged on the side of the inner square rod close to the second end; a locking pin and a second spring are also arranged on the shaft sleeve, and under the action of the second spring, the locking pin maintains the tendency of its first end to continuously move in the direction of the plug-in hole; when the first end of the outer rod is pulled out of the plug-in hole, the inner square rod continues to move in the direction of the plug-in hole under the action of the first spring until the first end of the locking pin is inserted into the locking groove and is prevented from retreating.

[0006] The advantage of the present invention is that a locking pin is provided on the shaft sleeve of the lock body and a locking groove is provided on the inner square rod. When the outer panel and the outer square rod are removed, the inner square rod is pushed outward to block the plug-in hole. Even if tools are used from the outside, the shaft sleeve cannot be rotated, thereby achieving the purpose of preventing violent unlocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the structure of the lock body anti-riot device installed on the door panel in the embodiment;

[0008] Figure 2 It is a schematic diagram of the overall structure of the lock body anti-riot device in the embodiment;

[0009] Figure 3 It is a structural diagram of the disassembled state of the lock body anti-riot device in the embodiment;

[0010] Figure 4It is a structural diagram of the lock body anti-riot device in another embodiment in a disassembled state from another perspective;

[0011] Figure 5 It is a schematic diagram of the structure of some components of the lock body anti-riot device in the embodiment;

[0012] Figure 6 for Figure 3 An exploded structural diagram of the components shown;

[0013] Figure 7 for Figure 3 An exploded structural diagram of the components shown in another perspective;

[0014] Figure 8 It is a schematic diagram of the structure of some parts of the anti-riot device of the lock body under implementation from another perspective (when the anti-rotation protrusion falls into the anti-rotation groove to prevent the inner square rod from rotating around its central axis);

[0015] Fig. 9 It is a schematic diagram of the structure of some components of the lock body anti-riot device in the embodiment in the exploded state (when the anti-rotation protrusion does not fall into the anti-rotation groove to prevent the inner square rod from rotating around its central axis);

[0016] Fig.10 A schematic diagram of the structure of some components of the lock body anti-riot device in one state in the embodiment (when the anti-rotation protrusion falls into the anti-rotation groove to prevent the inner square rod from rotating around its central axis);

[0017] Fig.11 It is a schematic diagram of the overall exploded structure of the lock body anti-riot device in the embodiment (with a third spring);

[0018] Fig.12 for Figure 3 A schematic cross-sectional view of the components shown;

[0019] Fig.13 for Figure 3 A schematic structural diagram of a cross-sectional view of the component after the outer square rod is removed (the first end of the locking pin is inserted into the locking groove). DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] As attached Figure 1 To Attachment Figure 4As shown, a lock body anti-riot device installed on a door panel 100 includes a lock body 101, an inner handle 102, an inner panel 103, an outer handle 104, an outer panel 105, an inner square rod 1 and an outer square rod 2. The lock body 101, the inner handle 102, the inner panel 103, the outer handle 104 and the outer panel 105 are installed on the door panel 100 according to a conventional installation method.

[0022] As attached Figure 5 To Attachment Fig.12 As shown, an inner connector 3 is fixedly mounted on the inner handle 102, and the inner connector 3 is provided with an axial hole 31. The first end of the inner square rod 1 is connected to the inner connector 3. Specifically, the axial hole 31 is a square hole, and the inner square rod 1 is a square column. The inner square rod 1 is inserted into the axial hole 31, and the inner square rod 1 can move axially in the axial hole 31, and its first end is fixed in the axial hole 31 in the circumferential direction. A first spring 4 is provided in the axial hole 31 between the inner connector 3 and the inner square rod 1, and one end of the first spring 4 abuts against the bottom of the axial hole 31 and the other end abuts against the end surface of the first end of the inner square rod 1.

[0023] A shaft sleeve 5 is arranged in the lock body 101 . The shaft sleeve 5 has an inserting hole 51 penetrating through the front and rear end surfaces. The second end of the inner square rod 1 is inserted into the inserting hole 51 from the rear end of the shaft sleeve 5 .

[0024] The first end of the outer rod 2 is inserted into the insertion hole 51 from the front end of the sleeve 5, and the outer handle 104 has an inner hole. The second end of the outer rod 2 can be directly connected to the inner hole. The best way is that the second end face of the outer rod 2 is provided with a threaded hole 21 along the axial direction of the outer rod 2, and the threaded hole 21 is screwed with an adjusting rod 6. The adjusting rod 6 has a rod cap 61 that is consistent with the outer peripheral shape of the outer rod 2. The rod cap 61 of the adjusting rod 6 is clamped in the inner hole. Therefore, it can be used to match the inner hole depth of the outer rod 2 and the handle on the outer panel 105 according to the situation to adapt to different door panel 100 thicknesses.

[0025] Therefore, the sleeve 5 can be rotated by rotating the inner handle 102 to drive the inner rod 1 or rotating the outer handle 104 to rotate the outer rod 2, so that the sleeve 5 can drive the mechanism in the lock body 101 to achieve the function of locking or unlocking the lock body 101.

[0026] Since a first spring 4 is arranged between the first end of the inner square rod 1 and the inner connecting member 3, under the action of the first spring 4, the inner square rod 1 maintains a tendency of its second end to continuously move toward the plug-in hole 51, and a locking groove 11 is arranged on the side of the inner square rod 1 close to the second end; a locking pin 71 and a second spring 72 are also arranged on the sleeve 5, specifically, a stepped hole 52 is arranged on the side of the sleeve 5, the central axis of which is perpendicularly intersected with the central axis of the plug-in hole 51 and is connected to the plug-in hole 51; the locking pin 71 has a locking cap, the locking pin 71 extends into the smaller hole of the stepped hole 52 and the locking cap is in the larger hole of the stepped hole 52; a sealing piece 73 is arranged on the end cover of the stepped hole 52 away from the end connected to the plug-in hole 51, and the second spring 72 falls in the larger hole of the stepped hole 52 and one end of the second spring abuts on the sealing piece 73 and the other end abuts on the locking cap. The inner square rod 1 is provided with a locking groove 11 on two opposite sides near the second end; there are two stepped holes 52 corresponding to the locking grooves 11 and they are respectively provided on two opposite sides of the sleeve 5, and each stepped hole 52 is equipped with the locking pin 71 and the second spring 72.

[0027] Under the action of the second spring 72, the locking pin 71 keeps its first end moving toward the insertion hole 51; when the first end of the outer rod 2 is pulled out of the insertion hole 51 (that is, after the outer panel 105 and the outer handle 104 are violently removed, the outer rod 2 can also be easily removed), the inner rod 1 continues to move toward the insertion hole 51 under the action of the first spring 4 until the first end of the locking pin 71 is inserted into the locking groove 11 and is prevented from retreating. At this time, if a tool is used outside, the sleeve 5 cannot be rotated, so the effect of preventing violent unlocking can be achieved.

[0028] In order to improve the level of riot control, as attached Fig. 9 and attached Fig.10 As shown, the side of the inner square rod 1 near the second end is provided with an anti-rotation protrusion 12, the rear end surface of the sleeve 5 is provided with an anti-rotation groove 53, and the lock body 101 is provided with an anti-rotation groove 107 at the position corresponding to the anti-rotation groove 53 of the sleeve 5. When the first end of the locking pin 71 is inserted into the locking groove 11 and the inner square rod 1 is prevented from retreating, the anti-rotation protrusion 12 falls into the anti-rotation groove 53 and the anti-rotation groove 107 at the same time to prevent the inner square rod 1 from rotating around its central axis. This further prevents external force from twisting the sleeve 5 and avoiding the situation of being unlocked by force.

[0029] In view of the fact that the inner panel 103 may fall down first due to an accident, causing the inner square rod 1 to be pushed forward and eventually losing the function of the first spring 4, the above structure can also be improved as follows, such as the attached Fig.11As shown, there is a third spring 8 which is sleeved on the inner square rod 1 from the first end of the inner square rod 1, one end of the third spring 8 abuts against the anti-rotation protrusion 12 and the other end abuts against the inner panel 103. Under the action of the third spring 8, the inner square rod 1 maintains a tendency for its second end to continuously move toward the plug-in hole 51.

[0030] In order to improve the level of anti-riot, when the first end of the locking pin 71 is inserted into the locking groove 11 and the inner rod 1 is prevented from retreating, the end surface of the first end of the locking pin 71 is just flush with the front end surface of the sleeve 5. That is, the shaft hole 31 is completely blocked by the inner rod 1, and external tools have no force to force and cannot be violently unlocked.

[0031] In order to reset the locking pin 71 after the first end of the locking pin 71 is inserted into the locking groove 11 and is prevented from retreating so that the outer rod 2 can be reinserted into the shaft hole 31, a groove 13 connected to the locking groove 11 can be provided on the side of the inner rod 1 where the locking groove 11 is provided, and the groove 13 is axially extended from the locking groove 11 to the first end of the inner rod 1; when the first end of the locking pin 71 is inserted into the locking groove 11, there is a gap between the end surface of the locking pin 71 facing the locking groove 11 and the bottom surface of the locking groove 11, and the user can insert the small wire 106 from one side of the inner rod 1 into the locking groove 11 through the groove 13 and into the gap, so that the locking pin 71 can overcome the action of the second spring 72 and be reset, and the inner rod 1 retreats from the shaft hole 31, so that the outer rod 2 can be reinserted into the shaft hole 31. In order to facilitate the small wire 106 (as shown in the attached Fig.12 The small iron wire 106 (shown by the dotted line) enters the locking groove 11 through the groove 13 and facilitates the small iron wire 106 to act on the locking pin 71. The bottom surface of the groove 13 is preferably set as an arc surface.

Claims

1. A lock body anti-riot device, comprising an inner square rod and an outer square rod, wherein the first end of the inner square rod is connected to an inner connecting piece, characterized in that: A shaft sleeve is arranged in the lock body, and the shaft sleeve has a plug-in hole that passes through the front and rear end surfaces; the first end of the outer rod and the second end of the inner rod are respectively plugged into the plug-in holes from the front and rear ends of the shaft sleeve; a first spring is arranged between the first end of the inner rod and the inner connecting piece, and under the action of the first spring, the inner rod maintains the tendency of its second end to continuously move toward the plug-in hole, and a locking groove is arranged on the side of the inner rod close to the second end; a locking pin and a second spring are also arranged on the shaft sleeve, and under the action of the second spring, the locking pin maintains the tendency of its first end to continuously move toward the plug-in hole; when the first end of the outer rod is pulled out of the plug-in hole, the inner rod continues to move toward the plug-in hole under the action of the first spring until the first end of the locking pin is inserted into the locking groove and is prevented from retreating.

2. A lock body anti-riot device according to claim 1, characterized in that: An anti-rotation protrusion is provided on the side surface of the inner square rod near the second end, an anti-rotation groove is provided on the rear end surface of the sleeve, and an anti-rotation groove is provided on the lock body corresponding to the position where the anti-rotation groove is provided on the sleeve. When the first end of the locking pin is inserted into the locking groove and the inner square rod is prevented from retreating, the anti-rotation protrusion falls into the anti-rotation groove and the anti-rotation groove at the same time to prevent the inner square rod from rotating around its central axis.

3. A lock body anti-riot device according to claim 2, characterized in that: When the first end of the locking pin is inserted into the locking groove and the inner square rod is prevented from retreating, the end surface of the first end of the locking pin is flush with the front end surface of the shaft sleeve.

4. A lock body anti-riot device according to claim 2, characterized in that: It also includes an inner panel, on which an inner handle is arranged, and the inner connecting member is fixedly installed and connected to the inner handle; a third spring is sleeved on the inner square rod from the first end of the inner square rod, one end of the third spring abuts against the anti-rotation protrusion and the other end abuts against the inner panel, and under the action of the third spring, the inner square rod maintains a tendency of its second end to continuously move toward the direction of the plug-in hole.

5. The lock body anti-riot device according to claim 1, characterized in that: It also includes an inner handle, the inner connecting piece is fixedly installed and connected to the inner handle, the inner connecting piece is provided with an axial hole, the inner square rod can move axially in the axial hole and its first end is fixed in the circumferential direction in the axial hole, the first spring is arranged in the axial hole and one end thereof abuts against the bottom of the axial hole and the other end abuts against the end face of the first end of the inner square rod.

6. The lock body anti-riot device according to claim 1, characterized in that: A groove connected to the locking groove is also provided on the side of the inner square rod where the locking groove is provided, and the groove extends axially from the locking groove to the first end of the inner square rod; when the first end of the locking pin is inserted into the locking groove, there is a gap between the end surface of the locking pin facing the locking groove and the bottom surface of the locking groove.

7. The lock body anti-riot device according to claim 1, characterized in that: A threaded hole is arranged on the second end surface of the outer rod along the axial direction of the outer rod, and an adjusting rod is screwed into the threaded hole. The adjusting rod has a rod cap which is consistent with the outer peripheral shape of the outer rod.

8. A lock body anti-riot device according to claim 7, characterized in that: It also includes an outer handle, which has an inner hole, and the rod cap of the adjusting rod is clamped in the inner hole.

9. A lock body anti-riot device according to any one of claims 1 to 8, characterized in that: A stepped hole is provided on the side of the sleeve, the central axis of which intersects perpendicularly with the central axis of the plug-in hole and is connected to the plug-in hole; the locking pin has a locking cap, the locking pin extends into the smaller hole of the stepped hole and the locking cap is located in the larger hole of the stepped hole; a sealing piece is provided on the end cover of the stepped hole away from the end connected to the plug-in hole, the second spring falls in the larger hole of the stepped hole and one end thereof abuts on the sealing piece and the other end abuts on the locking cap.

10. A lock body anti-riot device according to claim 9, characterized in that: The inner square rod is provided with locking grooves on two opposite sides close to the second end; there are two stepped holes corresponding to the locking grooves and they are respectively arranged on two opposite sides of the sleeve, and each stepped hole is equipped with the locking pin and the second spring.

Images