CN101852042B - Cam lock and tamper-proof device thereof - Google Patents
Cam lock and tamper-proof device thereof Download PDFInfo
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- CN101852042B CN101852042B CN200910048736.5A CN200910048736A CN101852042B CN 101852042 B CN101852042 B CN 101852042B CN 200910048736 A CN200910048736 A CN 200910048736A CN 101852042 B CN101852042 B CN 101852042B
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- lock
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- lock box
- elastic component
- groove
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Abstract
The invention discloses a cam lock, which comprises a lock tongue, a locking device, a swing stem and an electric device, wherein the lock tongue can be turned out to a locking position and turned in to an opening position; the locking device controllably prevents the lock tongue shrinking from the locking position to the opening position; the swing stem is arranged in a fist slide way in a lock box; the electric device is provided with a follower; the follower is arranged in a second slide way in the lock box; and one end of the swing stem is matched with the lock tongue in a surface contact mode, while the other end is matched with the follower in the surface contact mode. A tamper-proof device comprises a groove on the swing stem, a guide groove and an elastic member, wherein the guide groove is formed on a box cover corresponding to the groove; the elastic member comprises a coil spring part, a stop part and an extension part; the coil spring part is sleeved on a column arranged on the box cover; the free end of the coil spring part is fixed to the column; the free end of the extension part is hooked on another fixed part in the box cover; the stop part corresponds to the groove in position; and after the box cover becomes deformed by an external force, the free end of the extension part gets off the fixed part and the stop part enters the groove through the guide groove to lock the rotation of the swing stem.
Description
Technical field
The present invention relates to turning-bolt lock, more particularly, relate to the anti-picking device of turning-bolt lock.
Background technology
In the Chinese patent that is 200710041833.2 at application number, the invention of a kind of turning-bolt lock and electric device thereof is disclosed.The technical scheme of this invention has comprised that controllably stops the locking device of dead bolt from latched position to enable possition indentation, this locking device comprises that one packs lock box chute into (in specific embodiment, this chute is circular cylindrical cavity) the interior cylindricality block that is slidably matched (this block is called as pendulum post in the present invention) that also forms with it, a facade of this pendulum post is relative with a facade of dead bolt, at the situation bottom post of not obtaining the authorization, can not be rotated, therefore dead bolt is limited to latched position.After obtaining the authorization, pendulum post can be rotated an angle and then dead bolt can be turned and proceed to enable possition.
Above-mentioned turning-bolt lock is installed on the door-plate inner side of the containers such as safe conventionally, and door-plate outside is provided with the device as man-machine interface, as the panel of keyboard or other input units and display unit is housed.Because need to transmit the signal of telecommunication between lock and panel, a through wires hole will be set on door-plate.If the position of this through wires hole faces lock body, cracker can, after destroying panel, use the instrument of drill rod and so on by through wires hole, lock body to be destroyed.When the destroyed distortion of lid or the cracking of lock body, pendulum post is likely shifted and even from chute, comes off, thereby loses the locking to dead bolt, and then door-plate can be opened.
Summary of the invention
Object of the present invention aims to provide a kind of lock body and is being subject to illegal strong destruction, turning-bolt lock and the anti-picking device thereof of locking dead bolt after lock box cover distortion or cracking.
Technical scheme of the present invention comprises:
A lock box 10 with at least one breach 120, the lid 80 matching with this lock box, one can be produced to latched position and turn the dead bolt 20 that proceeds to enable possition from breach 120, the controllable locking device of dead bolt 20 from latched position to enable possition indentation that stops, this locking device comprises: one is contained in lock box the first chute 130 and is located in the circular cylindrical cavity 86 on lid 80 and has the pendulum post 30 of slip cooperating relationship with the two, an electric device 40 that follower 50 is housed, described follower is located in the second chute 150 in lock box and has slip cooperating relationship with this chute, one end of pendulum post 30 cooperatively interacts with the mode that described dead bolt 20 contacts with face, the other end cooperatively interacts with the mode that described follower 50 contacts with face, also be provided with an anti-picking device, it comprises:
A groove 39 being located on pendulum post 30, a position gathering sill 810 corresponding with groove 39 being located on circular cylindrical cavity 86 walls, one comprises ring spring portion 92, the elastic component 91 of retainer 93 and extension 94, ring spring portion is set on the cylinder 809 being located in lid 80, the free end 921 of ring spring portion is fixed on lid 80, the free end 941 of extension 94 has contact with on the fixed part 808 in being located at lid 80, retainer 93 is corresponding with groove 39 positions, lid 80 is subject to after external force deformation, the free end 941 of extension 94 is thrown off from fixed part 808, retainer 93 enters in groove 39 by gathering sill 810, the rotation of locking pendulum post 30.
On technique scheme basis, between ring spring portion 92 and retainer 93, also comprise the connecting portion 95 of an arc.
On technique scheme basis, elastic component 91 is single piece made from spring steel wire.
Further, described retainer 93 is shaped as U-shaped.The free end 941 of described extension 94 is hook-shaped L shaped.
Further, described fixed part 808 is a cylinder, and its section is L shaped, and cylinder top has the inclined-plane matching with the free end 941 of elastic component.
Further, groove 39 shapes that are located on pendulum post 30 are V-arrangements, and its opening angle is 15 ° to 40 °.
According to technical scheme of the present invention, locking closure be not damaged and under deformation state the axial displacement of described elastic component 91 by the convex plane 195 that is located at convex plane on locking closure 895 and be located on lock box, limited.
According to technical scheme of the present invention, on the screw boss 890 being provided with, be provided with a protuberance 891 on described lid 80, free end 94 for elastic component 91 offsets with elastic component extension 94 from described fixed part 808 is thrown off, and the suffered external force of elastic component is passed to lock box 10 by lid 80.
The present invention also comprises following technical scheme:
An anti-picking device, it comprises that stops the flexure strip 70 of electric device 40 from deviating from lock box, this flexure strip comprises a V-shape portion 74 that can flexibly embed in lock box groove 170, a planar portions 72 being connected with V-shape portion 74, which is provided with the mounting hole 171 that can be set on the projection 171 that is located at lock box cell wall 172, and a curved portions 73 that face that be connected with planar portions 72 and that match with electric device external surface contacts.
Adopt technique scheme, the present invention compared with existing turning-bolt lock, have the following advantages:
1. adopt and cover elastic component and supplementary structure are set at lock case, lid is subject to outside destroy distortion or cracking can make elastic component discharge, and the retainer on it will be put post locking after entering in pendulum post groove, and then dead bolt is locked, door can not be opened, improve the security protection performance of lock.
2. adopt the flexure strip structure embedding in lock box groove, with simple design of part, strengthened the tamper-resistant function to electric device.
3. above technical scheme is compared with existing, has increased by one or two parts, also very little, with low cost to other structural modification of prior art, easily implements.
Accompanying drawing explanation
In order to allow those skilled in the art further understand the present invention, below in conjunction with accompanying drawing, described in detail.
Fig. 1 is the latch mechanism structural representation of anti-picking device of the present invention while not moving;
Fig. 2 is the latch mechanism structural representation after anti-picking device action of the present invention;
Fig. 3 is that anti-picking device of the present invention is arranged on the structural representation in lid;
Fig. 4 is the structural representation after anti-picking device of the present invention moves in lid;
Fig. 5 is lid structural representation of the present invention;
Fig. 6 is locking box structure schematic diagram of the present invention;
Fig. 7 is that the present invention puts rod structure schematic diagram;
Fig. 8 is elastic component structural representation of the present invention;
Fig. 9 is flexure strip structural representation of the present invention.
The specific embodiment
The improvement project of doing on the disclosed technical scheme of the Chinese patent basis that embodiments of the invention are is 200710041833.2 at application number, in the present embodiment, only the technology contents of the above-mentioned patent relevant with this improvement project is described, other content can be referring to the open text of above-mentioned patent application.Need explanation, in the present embodiment, alleged pendulum post 30 is called block 30 in above-mentioned patent application.
Shown in Fig. 1 and Fig. 2 is position relationship and the action relationships between anti-picking device and lockwork.In actual installation process, elastic component 91 is (can referring to Fig. 3, Fig. 4 and Fig. 8) that are first arranged on lid 80, and then lid and lock box that elastic component is housed are fitted together.For the sake of clarity, in Fig. 1 and Fig. 2, concealed lid.From Fig. 1 and Fig. 2, can find out, dead bolt 20 is in and produces position, illustrates that lock is to be in the lock state.In Fig. 1, elastic component is in the position that there is no release, the retainer 93 of elastic component faces the V-shaped groove 39 on pendulum post 30, in the situation that lock body is not subject to outside destroy distortion, the retainer 93 of elastic component maintains a certain distance with the outer of pendulum post, after acquisition is unblanked to authorize, follower 50 is regained in electric device 40 actions, the obstruction of releasing to pendulum post, now dead bolt 20 turns in lock box along clockwise direction under external force, put post 30 simultaneously and turn in the counterclockwise direction an angle under dead bolt 20 promotes, lock has just been opened like this.Can find out, in said process, elastic component 91 can not hinder normal unlocking action, similarly, can not hinder the normal and action of locking yet.
Figure 2 illustrates the situation after elastic component discharges, can find out, the retainer 93 of elastic component 91 has entered in the V-shaped groove 39 being located on pendulum post 30, in this case, even if follower 50 is destroyed or prized, lose the lock function to pendulum post 30, elastic component 91 is still locked pendulum post 30, makes it to rotate and continues to keep the locking to dead bolt.Here it should be noted that, in the structure of the lock body in original application, considered the problem of the first deformation and fracture of which part when being subject to outside destroy, in Fig. 1 and Fig. 2, can find out, on dead bolt 20, pendulum post 30 right sides, these three screws are fixed together lock box and lid for the fixing screw 75,76 and 11 of lock box and lid to be provided with three, make screw and screw in conjunction with after mechanical strength be greater than the mechanical strength of locking closure other parts.When the instrument that uses drill rod and so on destroys lock body middle part or left side by the through wires hole on door-plate (if destruction is hit in lock body right side, external force can pass on doorframe by dead bolt, be difficult to lock body to form and destroy), the part that is positioned at these screws left sides is first destroyed and is out of shape even fracture.In this case, drill rod external force has lost being positioned at the application point of screw right side part, and elastic component 91, pendulum post 30 and dead bolt 20 still remain on lock box 10 and lid 80 right side parts.In lid left part, be damaged after distortion, the elastic component extension 94 that is positioned at lid left part will inevitably be stressed, it has contact with at the free end 941 being positioned on the cylinder 808 of lid left part and just can come off, now the ring spring portion 92 of elastic component discharges elastic force, elastic component retainer 93 is entered in the V-type groove 39 on pendulum post 30, suppose that now follower 50 is prized and is subjected to displacement, lose the locking to pendulum post 30, but because pendulum post 30 is blocked and can not rotate by elastic component retainer 94, still keeping the locking to dead bolt 20, so door is still by keyed.As can be seen here, anti-picking device of the present invention can play pick-proof effect effectively.
In Fig. 1 and Fig. 2, can find out, the electric device 40 (being a micro motor in the present embodiment) being arranged in lock box 10 has also been taked to pick-proof measure.A flexure strip 70 that adopts common elastic metal sheet to make, its shape as shown in Figure 9, its V-shape portion 74 inserts and is located in a groove 170 in lock box 10, mounting hole 71 is enclosed within on 2 cylinders 171 on lock box wall 172, curved portions 73 is made into the cambered surface matching with motor case face, and be just in time pressed on motor 40 shells, owing to after this V-shape portion insertion groove 170, elastic deformation can occurring, the wall of groove 170 is produced to the very large elastic force of dirt, when being subjected to displacement between V-shape portion 74 and groove 170, have very large frictional force and stop this displacement, thereby motor has been played to fixation.Adopt this technical scheme, can prevent that lock box cover 80 is destroyed splits even after the fracture of left side, use crooked steel wire class instrument, from door-plate through wires hole, put in motor 40 is prized from lock box 20, make to be connected follower 50 with motor 40 and be subjected to displacement or come off, thereby lose the locking to pendulum post 30.
Fig. 3 and Fig. 4 show elastic component 91 and are arranged on the situation on lid 80.In conjunction with Fig. 8 and Fig. 9, can find out, elastic component ring spring portion 92 is enclosed within on the cylinder boss 809 being located on lid 80, the free end 921 of ring spring portion is just in time fastened near the triangle recess 811 of sealing cylinder boss 809, the free end 941 of elastic component extension 94 has contact with on the top that is located at the L shaped cylinder 808 (fixed part) of lid 80, after elastic component installs, there is certain elastic deformation, that is to say and keeping making retainer 93 to enter smoothly the elastic force of the V-type groove 39 of pendulum post 30.For this free end can successfully be thrown off from fixed part 808 in lid be damaged when distortion, free end 941 is set as L shaped with small oblique angle, and fixed part 808 top end faces also have the inclination of equal angular simultaneously.After elastic component 91 installs, the retainer 93 of elastic component is in the gathering sill 810 being located on cavity 86, this gathering sill is out a breach on cavity 86 walls in fact, and its position is just in time facing to the retainer 941 of the elastic component 91 having installed.In conjunction with Fig. 5 and Fig. 6, in lid, be also provided with a reinforcing rib 895, its top plan is corresponding with elastic component extension 94, and wall 195 its top plan that are located at the chute 150 in lock box 10 are corresponding with elastic component connecting portion 95, that is to say that these 2 planes are limiting the axial displacement of elastic component 91, certainly elastic component 91 all maintains this certain gap with these two planes, and it can be discharged effectively, does not have and can in normal use procedure, make elastic component that unexpected displacement occur.
Fig. 5 shows the structure of lid 80, compares with the technical scheme before improving, and on cavity 86 walls, is provided with gathering sill 810, and for guaranteeing that inner wall surface thereof and pendulum post 30 peripheries are slidably matched, gathering sill does not reach the end.In addition, on lid fixing threaded hole boss, set up the cylinder boss 809 of suit elastic component ring spring 92, near lid edge, be provided with L shaped cylinder 808.Also in boss 890 outer rims, be provided with projection 891, after discharging at elastic component 91, prop up elastic component extension 94, suffered external force is delivered on lock box 10 by lid 80 and three hold-down screws.
Fig. 6 shows the structure of lock box 10, compares with the technical scheme before improving, and has increased reference column 171, has adjusted height of the cavity wall of placing motor etc.
Fig. 7 illustrates the structure of pendulum post 30, compares with the technical scheme before improving, and is being provided with V-shaped groove 39 with elastic component retainer 93 correspondence positions.
Fig. 8 shows the structure of elastic component 91, can be clearly seen that the planform of ring spring 92, arc connecting portion 95, retainer 93 and extension 94 and two free ends 921 and 941.Wherein, it is while discharging for elastic component that connecting portion is set to arc, makes retainer 93 with suitable angle, enter the V groove 39 of pendulum post 30, and makes retainer 93 remain on the position that is difficult for deviating from from V-type groove.
Fig. 9 shows the structure of flexure strip 70, can see, it is comprised of V-shape portion 74, curved portions 73 and planar portions 72, in planar portions, be provided with location use mounting hole 71, this borehole jack on two cylinders 171 after, flexure strip 70 is more effectively fixed on lock box 10.
Claims (10)
1. turning-bolt lock and an anti-picking device thereof, comprising:
A lock box (10) with at least one breach (120), the lid (80) matching with this lock box, one can be produced to latched position and turn the dead bolt (20) that proceeds to enable possition from breach (120), the controllable locking device of dead bolt (20) from latched position to enable possition indentation that stops, this locking device comprises: one is contained in lock box the first chute (130) and is located in the circular cylindrical cavity (86) on lid (80) and has the pendulum post (30) of slip cooperating relationship with the two, an electric device (40) that follower (50) are housed, described follower is located in the second chute (150) in described lock box and has slip cooperating relationship with this chute, one end of described pendulum post (30) cooperatively interacts with the mode that described dead bolt (20) contacts with face, the other end cooperatively interacts with the mode that described follower (50) contacts with face, it is characterized in that: be also provided with an anti-picking device, it comprises:
A groove (39) being located on pendulum post (30), a position gathering sill (810) corresponding with groove (39) being located on described circular cylindrical cavity (86) wall, one comprises ring spring portion (92), the elastic component (91) of retainer (93) and extension (94), described ring spring portion is set on the cylinder (809) being located in lid (80), the free end of ring spring portion (921) is fixed on lid (80), the free end (941) of extension (94) has contact with in being located at lid (80) on fixed part (808), retainer (93) is corresponding with groove (39) position, lid (80) is subject to after external force deformation, the free end (941) of extension (94) is thrown off from fixed part (808), retainer (93) enters in groove (39) by gathering sill (810), the rotation of locking pendulum post (30).
2. turning-bolt lock as claimed in claim 1 and anti-picking device thereof, is characterized in that, also comprises the connecting portion (95) of an arc between described ring spring portion (92) and described retainer (93).
3. turning-bolt lock as claimed in claim 2 and anti-picking device thereof, is characterized in that, described elastic component (91) is the single piece made from spring steel wire.
4. turning-bolt lock as claimed in claim 3 and anti-picking device thereof, is characterized in that, described retainer (93) is shaped as U-shaped.
5. turning-bolt lock as claimed in claim 3 and anti-picking device thereof, is characterized in that, the free end (941) of described extension (94) is hook-shaped L shaped.
6. turning-bolt lock as claimed in claim 3 and anti-picking device thereof, is characterized in that, described fixed part (808) is a cylinder, and its section is L shaped, and cylinder top has the inclined-plane matching with the free end (941) of elastic component.
7. turning-bolt lock as claimed in claim 1 and anti-picking device thereof, is characterized in that, groove (39) shape being located on pendulum post (30) is V-arrangement, and its opening angle is 15 ° to 40 °.
8. turning-bolt lock as claimed in claim 1 and anti-picking device thereof, it is characterized in that, locking closure be not damaged and under deformation state the axial displacement of described elastic component (91) by the convex plane (195) that is located at the convex plane (895) on locking closure and be located on lock box, limited.
9. turning-bolt lock as claimed in claim 1 and anti-picking device thereof, it is characterized in that, on the screw boss (890) being provided with, be provided with a protuberance (891) on described lid 80, free end (94) for elastic component (91) offsets with elastic component extension (94) from described fixed part (808) is thrown off, and the suffered external force of elastic component is passed to lock box (10) by lid (80).
10. turning-bolt lock and an anti-picking device thereof, comprising:
A lock box (10) with at least one breach (120), the lid (80) matching with this lock box, one can be produced to latched position and turn the dead bolt (20) that proceeds to enable possition from breach (120), the controllable locking device of dead bolt (20) from latched position to enable possition indentation that stops, this locking device comprises: a pendulum post (30) that is contained in lock box the first chute (130) and is located in circular cylindrical cavity (86) on lid (80) and is slidably matched with the two formation, an electric device (40) that follower (50) are housed, described follower is located in the second chute (150) in described lock box and has slip cooperating relationship with this chute, one end of described pendulum post (30) cooperatively interacts with the mode that described dead bolt (20) contacts with face, the other end cooperatively interacts with the mode that described follower (50) contacts with face,
It is characterized in that: be also provided with an anti-picking device, it comprises that stops the flexure strip (70) of electric device (40) from deviating from lock box, this flexure strip comprises a V-shape portion (74) that can flexibly embed in lock box groove (170), a planar portions (72) being connected with V-shape portion (74), which is provided with the mounting hole (171) that can be set on the projection (171) that is located at lock box cell wall (172), and a curved portions (73) that face that be connected with planar portions (72) and that match with electric device external surface contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048736.5A CN101852042B (en) | 2009-04-02 | 2009-04-02 | Cam lock and tamper-proof device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048736.5A CN101852042B (en) | 2009-04-02 | 2009-04-02 | Cam lock and tamper-proof device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101852042A CN101852042A (en) | 2010-10-06 |
| CN101852042B true CN101852042B (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910048736.5A Expired - Fee Related CN101852042B (en) | 2009-04-02 | 2009-04-02 | Cam lock and tamper-proof device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101852042B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106088849B (en) * | 2016-08-18 | 2018-05-22 | 东莞市锁之道科技有限公司 | A kind of cam lock |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6786519B2 (en) * | 2002-01-07 | 2004-09-07 | U-Code, Inc. | Swing bolt lock with improved tamper resistance and method of operation |
| US7461872B2 (en) * | 2006-04-12 | 2008-12-09 | Computerized Security Systems, Inc. | Motorized swing bolt lock |
| CN101324163A (en) * | 2007-06-11 | 2008-12-17 | 上海伙伴科技发展有限公司 | Cam lock and its electrodynamic device |
| CN201428304Y (en) * | 2009-04-02 | 2010-03-24 | 上海伙伴科技发展有限公司 | Cam lock and anti-theft device thereof |
-
2009
- 2009-04-02 CN CN200910048736.5A patent/CN101852042B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6786519B2 (en) * | 2002-01-07 | 2004-09-07 | U-Code, Inc. | Swing bolt lock with improved tamper resistance and method of operation |
| US7461872B2 (en) * | 2006-04-12 | 2008-12-09 | Computerized Security Systems, Inc. | Motorized swing bolt lock |
| CN101324163A (en) * | 2007-06-11 | 2008-12-17 | 上海伙伴科技发展有限公司 | Cam lock and its electrodynamic device |
| CN201428304Y (en) * | 2009-04-02 | 2010-03-24 | 上海伙伴科技发展有限公司 | Cam lock and anti-theft device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101852042A (en) | 2010-10-06 |
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Granted publication date: 20140305 Termination date: 20190402 |