WO2023133680A1 - 一种防敲击锁具 - Google Patents
一种防敲击锁具 Download PDFInfo
- Publication number
- WO2023133680A1 WO2023133680A1 PCT/CN2022/071295 CN2022071295W WO2023133680A1 WO 2023133680 A1 WO2023133680 A1 WO 2023133680A1 CN 2022071295 W CN2022071295 W CN 2022071295W WO 2023133680 A1 WO2023133680 A1 WO 2023133680A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lock
- stopper
- cam
- slide bar
- knock
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/10—Bolts of locks or night latches
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
- E05B65/52—Other locks for chests, boxes, trunks, baskets, travelling bags, or the like
Definitions
- the invention relates to the technical field of locks, in particular to an anti-knock lock.
- the object of the present invention is to provide an anti-knock lockset, which can simplify the structure and reduce the cost while having the function of anti-knock unlocking.
- an anti-knock lock including a lock case, and a dead bolt, a stopper, a power device, a cam, a slide bar, and a first reset member arranged in the lock case and the second reset member;
- the lock housing is provided with a lock hole;
- the middle part of the dead bolt is rotatably connected with the lock housing, and one end thereof is telescopically matched at the lock hole;
- the middle part of the stopper is connected with the lock
- the shell is rotatably connected;
- the power device is connected with the cam transmission, and is used to drive the cam to rotate;
- the cam is arranged opposite to the slide bar, and the slide bar moves with the rotation of the cam;
- the The sliding bar is in sliding fit with the lock case and points to the lock hole, and the stopper rotates with the movement of the sliding bar to realize the rotation of the lock bolt in a limited position or to give way;
- the first The reset member is used to provide elastic force to reset the lock tongue to the locked state, and one
- the deadbolt has an eccentric structure, and when subjected to the same external force, the moment of inertia of the deadbolt is greater than that of the stopper, so that the rotation angle of the deadbolt is greater than the rotation angle of the stopper, and the When the lock tongue is in contact with the stop block, the stop block is in a position that limits the rotation of the lock tongue in the unlocking direction.
- the other end of the lock bolt is provided with a first plane, and one end of the stopper is provided with a second plane.
- first plane is opposite to the second plane;
- second plane When knocked by external force so that the lock tongue contacts the stopper, the edge of the second plane is against the first plane.
- the center of mass of the block is located at its axis of rotation.
- One end of the stopper is provided with a movable pin, and one end of the sliding rod is radially provided with a movable groove for the sliding fit of the movable pin.
- a boss for limiting the rotation angle of the stopper is also arranged in the lock housing.
- the power device is a motor, and the cam is coaxially connected to the motor shaft of the motor.
- the slide bar is provided with a baffle for the cam to cooperate with, and the cam and the second reset member are respectively fitted on both sides of the baffle.
- the contact point between the cam and the baffle is lower than the height of the cam axis.
- the first return member is a spring, one end of which is connected to the inner wall of the lock housing, and the other end is connected to the other end of the dead bolt; the other end of the dead bolt is provided with a The latch; the second return member is a spring, one end of which is sleeved on the other end of the slide bar, and the other end is against the inner wall of the lock housing.
- the structure of the lock of the present invention is simple and reliable.
- the combination of the deadbolt and the block not only ensures the basic switch lock function of the lock, but also realizes anti-knock unlocking through the linkage relationship of the cam, the slide bar, and the block. ;
- the same function can be achieved with fewer parts, which not only realizes simplified structure, lower cost, but also increases the stability and reliability of the lock.
- Fig. 1 is an exploded view of a specific embodiment of the present invention.
- Fig. 2 is a perspective view of a housing of a specific embodiment of the present invention.
- Fig. 3 is a perspective view of a cover body according to a specific embodiment of the present invention.
- Fig. 4 is a perspective view of a lock tongue according to a specific embodiment of the present invention.
- Fig. 5 is a perspective view of a stopper according to a specific embodiment of the present invention.
- Fig. 6 is a perspective view of a slide bar according to a specific embodiment of the present invention.
- Fig. 7 is a perspective view of a slider seat according to a specific embodiment of the present invention.
- Fig. 8 is a schematic structural diagram of a locked state according to a specific embodiment of the present invention.
- Fig. 9 is a schematic structural diagram of an unlocked state according to a specific embodiment of the present invention.
- the present invention is an anti-knock lock, comprising a lock case 1, and a lock tongue 2, a stopper 3, a power device 4, a cam 5, a slide bar 6, a first reset member 7 and a second reset member 7 arranged in the lock case 1 Reset part 8.
- the lock case 1 is provided with a lock hole 11 .
- the middle part of the deadbolt 2 is rotatably connected with the lock case 1, and one end thereof is telescopically fitted at the lock hole 11.
- the middle part of the block 3 is rotatably connected with the lock case 1 .
- the power unit 4 is in transmission connection with the cam 5 for driving the cam 5 to rotate.
- the cam 5 is arranged opposite to the slide bar 6 , and the slide bar 6 moves along with the rotation of the cam 5 .
- the sliding rod 6 is in sliding fit with the lock housing 1 and points to the lock hole 11 , and the block 3 rotates along with the movement of the sliding rod 6 to realize the rotation of the lock tongue 2 in a position-limiting or abdicating manner.
- the first reset member 7 is used to provide elastic force to reset the lock tongue 2 to the locked state, and one end of the lock tongue 2 protrudes out of the lock hole 11 in the locked state.
- the second reset member 8 is used to provide elastic force to reset the slide bar 6 to the locked state, and the slide bar 6 drives the stopper 3 to limit the rotation of the dead bolt 2 in the locked state.
- the structure of the lockset of the present invention is simple and reliable.
- the combination of the deadbolt 2 and the stopper 3 not only ensures the basic switch lock function of the lockset, but also realizes the anti-lock function through the linkage relationship of the cam 5, the slide bar 6 and the stopper 3.
- Knock to unlock; compared with other locks, the same function can be achieved with fewer parts, which not only realizes simplified structure, lower cost, but also increases the stability and reliability of the lock.
- FIG. 1 to FIG. 7 specific embodiments of the present invention are shown (the following directional descriptions refer to the directions in FIG. 8 and 9 ).
- the above-mentioned deadbolt 2 is an eccentric structure, and when subjected to the same external force, the moment of inertia of the deadbolt 2 is greater than that of the stopper 3, so that the rotation angle of the deadbolt 2 is greater than the rotation angle of the stopper 3, and the deadbolt 2
- the stopper 3 When the stopper 3 is in contact with the stopper 3, the stopper 3 is in the position where the lock tongue 2 rotates in the direction of unlocking, that is, when the same external force is applied (the process of knocking by the same external force), the rotation speed of the lock tongue 2 is greater than that of the stopper 3.
- the deadbolt 2 Before the stopper 3 rotates to the position of giving way to the deadbolt 2, the deadbolt 2 has been in contact with the stopper 3, and is restricted by the stopper 3 to continue to rotate, thereby avoiding the occurrence of external force knocking to unlock the lock.
- the other end of the above-mentioned deadbolt 2 is provided with a first plane 21, and one end of the block 3 is provided with a second plane 31.
- first plane 21 and the second plane 31 are oppositely arranged. Or when trying to push the lock tongue 2 to rotate clockwise, the first plane 21 will be against (the edge of) the second plane 31, so that the lock tongue 2 cannot be further rotated, and one end of the lock tongue 2 cannot be retracted into the lock hole 11, that is, Unable to unlock.
- the side of the above-mentioned block 3 is provided with an arc surface 32 for allowing the locking tongue 2 to rotate.
- One end of the above-mentioned block 3 is provided with a movable pin 33, and one end of the slide bar 6 is radially provided with a movable groove 61 for the sliding connection of the movable pin 33.
- the movable pin 33 moves up and down in the movable groove 61. Moving to realize the lateral movement of the slide bar 6 can drive the stopper 3 to rotate.
- the above-mentioned block 3 is designed such that its center of mass is set at the shaft hole of the block 3, preferably the center of the shaft hole coincides with the center of mass, so that the center of mass of the actually produced parts will be relatively close to the center of the second rotating shaft 60, minimizing knocking. Hit the moment of inertia that backstop 3 rotates around the axis of rotation.
- the above-mentioned lock housing 1 is also provided with a boss 12 for limiting the rotation angle of the stopper 3.
- the slide bar 6 drives the stopper 3 so that the other end of the stopper 3 is against the boss. 12, the limit position when the limit block 3 rotates counterclockwise is realized.
- the above-mentioned power unit 4 is a motor, and the cam 5 is coaxially connected to the motor shaft of the motor.
- the power device 4 adopts a deceleration motor, and the cam 5 can be driven to drive the slide bar 6 to move in place with a relatively small power (generally less than one turn), so as to save power.
- the slide bar 6 is provided with a baffle 62 for matching the cam 5 , and the cam 5 and the second reset member 8 are respectively fitted on both sides of the baffle 62 .
- the contact point between the cam 5 and the baffle 62 in the unlocked state is designed to be lower than the shaft center height of the cam 5 (that is, the above-mentioned motor shaft), so as to ensure that the slide bar 6 will not fall on the second reset member 8 after the power is turned off.
- the above-mentioned first return member 7 is a spring, one end of which is connected to the inner wall of the lock housing 1 , and the other end is connected to the other end of the lock tongue 2 .
- the other end of the lock tongue 2 is provided with a latch 9 for connecting the first reset member 7 .
- the bolt 9 is inserted into the other end of the deadbolt 2 and fixed by the clip spring 10 .
- the above-mentioned second return member 8 is a spring, one end of which is sleeved on the other end of the slide bar 6 , and the other end is against the inner wall of the lock housing 1 .
- the present invention also includes a circuit board 20 installed in the lock case 1 , the circuit board 20 is electrically connected with the power device 4 for receiving external control signals and controlling the working state of the power device 4 .
- the present invention also includes a slide bar seat 30 installed in the lock housing 1.
- the shaft part of the slide bar 6 (excluding the movable groove 61 and the baffle plate 62 at the end) is set as a special-shaped cross-section, and the slide bar seat 30 is provided with a special-shaped cross-section.
- Matching shaped holes 301 The function of setting the slide bar seat 30 is to stabilize the moving direction of the slide bar 6, and through the matching of the shaft of the special-shaped section and the special-shaped hole 301, the slide bar 6 does not rotate when moving, thereby ensuring the functional stability of the slide bar 6, Ensure the transmission relationship between the slide bar 6 and the block 3.
- the slide bar seat 30 is divided into upper and lower pieces and clamped on the upper and lower sides of the slide bar 6 to facilitate assembly, and a slide bar seat 30 is provided at both ends of the slide bar 6 .
- cross-section of the shaft of the above-mentioned sliding rod 6 is cross-shaped.
- the lock housing 1 is provided with a plurality of positioning pins 13 for positioning and matching of the slide bar seat 30.
- the slide bar seat 30 is inserted and fitted with the positioning pins 13, and is locked on the inner wall of the lock housing 1 by screws to ensure that the slide bar seat The position of 30 is fixed.
- the present invention also includes a pressing plate 40 for fixing the power device 4 to ensure a stable position of the power device 4 in the lock housing 1 , thereby ensuring a stable driving function of the cam 5 for the slide bar 6 .
- the present invention also includes a first rotating shaft 50 and a second rotating shaft 60, both of which are installed in the lock housing 1; 1; the middle part of the block 3 is sleeved on the second rotating shaft 60 to realize its rotational connection with the lock case 1.
- the above-mentioned lock housing 1 includes a housing 1a and a cover 1b; the housing 1a is provided with an installation cavity 14, and the side wall of the installation cavity 14 is provided with the above-mentioned lock hole 11; the cover 1b is covered at the opening of the installation cavity 14, so that The lock case 1 is in a closed state.
- the housing 1a and the cover 1b are locked by screws to realize detachable assembly.
- various structures included in the above-mentioned lock case 1 are also provided in the installation cavity 14 .
- cam 5 slide bar 6 all adopt the material molding with low density, as plastics, reduce the weight of cam 5, slide bar 6 as far as possible, to reduce the active force of cam 5, slide bar 6 to stopper when knocking by external force, avoid Tap to unlock.
- the locking process of the present invention is: in the unlocked state, the motor drives the cam 5 to reverse, and the slide bar 6 pushes the block 3 to rotate counterclockwise under the action of the second reset member 8 (that is, the spring) , at this time, if the lock tongue 2 is still in the unlocked state, the stopper 3 is against the lock tongue 2; after the external force pushing the lock tongue 2 is released, the lock tongue 2 will rotate counterclockwise to the upper position under the pulling force of the first reset member 7. In the lock position, after the lock tongue 2 leaves the block 3 , the slide bar 6 will continue to push the block 3 to rotate counterclockwise under the action of the second reset member 8 until the block 3 abuts on the boss 12 .
- the second reset member 8 that is, the spring
- the first plane 21 of the deadbolt 2 is opposite to the second plane 31 of the stopper 3.
- the first plane 21 will be against the second plane 31, so that the deadbolt 2 It cannot be further rotated, and one end of the dead bolt 2 cannot be retracted into the lock hole 11, that is, it cannot be unlocked.
- the unlocking process of the present invention is as follows: in the locked state, the motor drives the cam 5 to rotate forward, and the cam 5 abuts against the baffle plate 62 of the slide bar 6 and makes the slide bar 6 overcome the force of the second reset member 8.
- the elastic force moves to the right, and pushes the block 3 to rotate clockwise, and the cam 5 stops rotating after being pressed against the inner wall of the lock housing 1.
- the stopped position of the block 3 can avoid the movement track of the rotation of the dead bolt 2, and the unlocking is completed. Push the dead bolt 2 to complete the unlocking.
- the working principle of the present invention is (including the scheme of further improving various functions):
- the block 3 is designed so that its center of mass is set at the shaft hole of the block 3, preferably the shaft hole center and The centers of mass coincide, so that the center of mass of the parts actually produced will be closer to the center of the second rotating shaft 60, which can minimize the moment of inertia of the stopper 3 rotating around the second rotating shaft 60 after knocking, and the moment of inertia of the stopper 3 must be Less than the moment of inertia of deadbolt 2.
- the cam 5 and the slide bar 6 are molded by materials with low density such as plastics and aluminum alloys, so as to reduce the weight of the cam 5 and the slide bar 6 .
- the lock tongue 2 is made of metal material, and the lock tongue 2 is designed as an eccentric structure.
- the contact point between the cam 5 and the baffle plate 62 on the slide bar 6 is designed to be lower than the center height of the motor shaft, so that it can be ensured that the slide bar 6 will not push the cam 5 to reverse and cause lock, but the baffle plate 62 on the slide bar 6 will be against the cam 5 under the elastic force of the second reset member 8, and the cam 5 will be against the bottom wall of the housing 1a, so that even if the power is off, the Cam 5, slide bar 6, block 3 can not move under the elastic force of the second resetting part 8, promptly can cut off power, and lockset can keep unlocking state, after keeping unlocking for a certain period of time, circuit board 20 supplies power to motor again, allows The motor drives the cam 5 to reverse, and the slide bar 6 pushes the stopper 3 to rotate counterclockwise under the elastic force of the second reset member 8.
- the stopper 3 When the dead bolt 2 returns to the locked position, the stopper 3 also returns to the locked position thereupon.
- the motor needs to be powered only when unlocking and closing the lock, and since the motor rotates less than one turn each time the lock is opened and closed, it only takes a few tenths of a second to complete it, and the period from unlocking to closing the lock does not need to supply power to the motor , so that it can ensure that only a small amount of power is consumed each time the lock is switched on and off.
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- Lock And Its Accessories (AREA)
Abstract
本发明公开一种防敲击锁具，包括锁壳，以及设在锁壳内的锁舌、挡块、动力装置、凸轮、滑杆、第一复位件和第二复位件；锁壳设有锁孔；锁舌的中部与锁壳转动连接，其一端在锁孔处伸缩配合；挡块的中部与锁壳转动连接；动力装置与凸轮传动连接，用于驱动凸轮转动；凸轮与滑杆相对设置，滑杆随着凸轮的转动而移动；滑杆与锁壳滑接配合并指向锁孔，挡块随着滑杆的移动而转动，以实现限位或让位锁舌的转动；第一复位件用于提供弹力使得锁舌向上锁状态复位，上锁状态时锁舌的一端伸出锁孔；第二复位件用于提供弹力使得滑杆向上锁状态复位，上锁状态时滑杆带动挡块限位锁舌的转动。本发明在具备防敲击开锁功能的同时，实现简化结构、降低成本。
Description
本发明涉及锁具技术领域，特别是指一种防敲击锁具。
目前，保险柜已逐渐成为常用安防产品，而保险柜的安全性能与锁具功能关联较大，近年随着相关技术不断提高，保险柜锁产品升级需求增加，产品安全性能逐渐提高。市面上的保险柜锁结构形式有以下几种：①电机带动偏心轮转动，使其避开锁舌以实现解锁；②电机通过弹簧带动插销，使其避开锁栓，这样转动锁舌时锁栓可以后退以实现解锁。
上述两种方案中，前者的偏心轮通过扭簧复位，因而在解锁期间，需要不间断给电机供电，让电机堵转，当解锁时间比较长时，电机堵转电流较大，这种方案十分耗电，严重降低了电池的使用寿命；后者的插销比较细，强度不够，且插销靠弹簧带动，因而存在敲击开锁的风险，锁具还需要增加防敲击开锁的机构，导致锁具的结构比较复杂、成本较高、零部件较多，且锁具的可靠性、稳定性较低。
本发明的目的在于提供一种防敲击锁具，在具备防敲击开锁功能的同时，达到简化结构、降低成本的目的。
为了达成上述目的，本发明的解决方案是：一种防敲击锁具，包括锁壳，以及设置在所述锁壳内的锁舌、挡块、动力装置、凸轮、滑杆、第一复位件和第二复位件；所述锁壳设置有锁孔；所述锁舌的中部与所述锁壳转动连接，其一端在所述锁孔处伸缩配合；所述挡块的中部与所述锁壳转动连接；所述动力装置与所述凸轮传动连接，用于驱动所述凸轮转动；所述凸轮与所述滑杆相对设置，所述滑杆随着所述凸轮的转动而移动；所述滑杆与所述锁壳滑接配合并指向所述锁孔，所述挡块随着所述滑杆的移动而转动，以实现限位或让位所述锁舌的转动；所述第一复位件用于提供弹力使得所述锁舌向上锁状态复位，上锁状态时所述锁舌的一端伸出所述锁孔；所述第二复位件用于提供弹力使得所述滑杆向上锁状态复位，上锁状态时所述滑杆带动所述挡块限位所述锁舌的转动。
所述锁具受到外力敲击时，所述锁舌和所述挡块会转动，在所述挡块到达解锁位置前所述锁舌会与所述挡块接触。
所述锁舌为偏心结构，且受相同的外力时所述锁舌的转动惯量大于所述挡块的转动惯量，以使所述锁舌的转动角度大于所述挡块的转动角度，所述锁舌与所述挡块接触时所述挡块处于限位所述锁舌往开锁方向转动的位置。
所述锁舌的另一端设置有第一平面，所述挡块的一端设置有第二平面，锁具处于上锁状态时，所述第一平面与所述第二平面相对设置；所述锁具受外力敲击而使得所述锁舌与所述挡块接触时，所述第二平面的边缘抵住所述第一平面。
所述挡块的质心位于其转轴处。
所述挡块的一端设置有活动销，所述滑杆的一端径向开设有供所述活动销滑接配合的活动槽。
所述锁壳内还设置有用于限位所述挡块转动角度的凸台。
所述动力装置为电机，所述凸轮同轴连接在所述电机的电机轴上。
所述滑杆上设置有供所述凸轮配合的挡板，所述凸轮与所述第二复位件分别配合在所述挡板的两侧。
所述锁具处于开锁状态时，所述凸轮与所述挡板的接触点低于所述凸轮的轴心高度。
所述第一复位件为弹簧，其一端连接在所述锁壳的内壁，其另一端与所述锁舌的另一端连接；所述锁舌的另一端设置有供所述第一复位件连接的插销；所述第二复位件为弹簧，其一端套置在所述滑杆的另一端，其另一端抵在所述锁壳的内壁上。
采用上述技术方案后，本发明的锁具结构简单可靠，采用锁舌与挡块的组合既保证了锁具的基本开关锁功能，又通过凸轮、滑杆、挡块的联动关系实现了防敲击开锁；与其他锁具相比，仅用较少的零件就能实现相同的功能，既实现了简化结构、降低成本，又增加了锁具的稳定性和可靠性。
图1为本发明具体实施例的分解图。
图2为本发明具体实施例壳体的立体图。
图3为本发明具体实施例盖体的立体图。
图4为本发明具体实施例锁舌的立体图。
图5为本发明具体实施例挡块的立体图。
图6为本发明具体实施例滑杆的立体图。
图7为本发明具体实施例滑杆座的立体图。
图8为本发明具体实施例上锁状态的结构示意图。
图9为本发明具体实施例开锁状态的结构示意图。
附图标号说明：1----锁壳；1a---壳体；1b---盖体；11---锁孔；12---凸台；13---定位销；14---安装腔；2----锁舌；21---第一平面；3----挡块；31---第二平面；32---圆弧面；33---活动销；4----动力装置；5----凸轮；6----滑杆；61---活动槽；62---挡板；7----第一复位件；8----第二复位件；9----插销；10---卡簧；20---电路板；30---滑杆座；301--异型孔；40---压板；50---第一转轴；60---第二转轴。
为了进一步解释本发明的技术方案，下面通过具体实施例来对本发明进行详细阐述。
本发明为一种防敲击锁具，包括锁壳1，以及设置在锁壳1内的锁舌2、挡块3、动力装置4、凸轮5、滑杆6、第一复位件7和第二复位件8。
锁壳1设置有锁孔11。
锁舌2的中部与锁壳1转动连接，其一端在锁孔11处伸缩配合。
挡块3的中部与锁壳1转动连接。
动力装置4与凸轮5传动连接，用于驱动凸轮5转动。
凸轮5与滑杆6相对设置，滑杆6随着凸轮5的转动而移动。
滑杆6与锁壳1滑接配合并指向锁孔11，挡块3随着滑杆6的移动而转动，以实现限位或让位锁舌2的转动。
第一复位件7用于提供弹力使得锁舌2向上锁状态复位，上锁状态时锁舌2的一端伸出锁孔11。
第二复位件8用于提供弹力使得滑杆6向上锁状态复位，上锁状态时滑杆6带动挡块3限位锁舌2的转动。
通过上述方案，本发明的锁具结构简单可靠，采用锁舌2与挡块3的组合既保证了锁具的基本开关锁功能，又通过凸轮5、滑杆6、挡块3的联动关系实现了防敲击开锁；与其他锁具相比，仅用较少的零件就能实现相同的功能，既实现了简化结构、降低成本，又增加了锁具的稳定性和可靠性。
参考图1至图7所示，示出了本发明的具体实施例（以下方向性的描述均以图8、9中的方向为参照）。
本实用新型受到外力敲击时，锁舌2和挡块3会转动，在挡块3到达解锁位置前锁舌2会与挡块3接触。
进一步地，上述锁舌2为偏心结构，且受相同的外力时锁舌2的转动惯量大于挡块3的转动惯量，以使锁舌2的转动角度大于挡块3的转动角度，锁舌2与挡块3接触时挡块3处于限位锁舌2往开锁方向转动的位置，也即受相同的外力时（同一次外力敲击的过程）锁舌2的转动速度大于挡块3，在挡块3转动至让位锁舌2的位置之前，锁舌2已经与挡块3接触，并被挡块3限制继续转动，从而避免了外力敲击开锁的情况发生。
上述锁舌2的另一端设置有第一平面21，挡块3的一端设置有第二平面31，锁具处于上锁状态时，第一平面21与第二平面31相对设置，当受到外力敲击或尝试推动锁舌2顺时针转动时，第一平面21将与第二平面31（的边缘）相抵，使得锁舌2无法进一步转动，锁舌2的一端无法缩回锁孔11内，也即无法开锁。
上述挡块3的侧边设置有让位锁舌2转动的圆弧面32。
上述挡块3的一端设置有活动销33，滑杆6的一端径向开设有供活动销33滑接配合的活动槽61，滑杆6移动的过程中，活动销33在活动槽61内上下移动以实现滑杆6的横向移动能够带动挡块3转动。
上述挡块3设计成其质心设置在挡块3的轴孔处，优选为轴孔中心与质心重合，这样实际生产的零件的质心会比较靠近第二转轴60的中心，最大限度地减小敲击后挡块3绕转轴转动的转动惯量。
上述锁壳1内还设置有用于限位挡块3转动角度的凸台12，在第二复位件8的作用下，滑杆6带动挡块3，使挡块3的另一端抵在凸台12上，实现限制挡块3逆时针旋转时的极限位置。
上述动力装置4为电机，则凸轮5同轴连接在电机的电机轴上。本实施例中，动力装置4采用减速电机，使用较小的动力（一般少于一圈）就可以驱动凸轮5带动滑杆6移动到位，达到省电的目的。
上述滑杆6上设置有供凸轮5配合的挡板62，凸轮5与第二复位件8分别配合在挡板62的两侧。
进一步地，开锁状态时凸轮5与挡板62的接触点设计成低于凸轮5的轴心高度（也即上述电机轴），这样可以确保断电后滑杆6不会在第二复位件8的作用下推动凸轮5反转又导致上锁，而是滑杆6上的挡板62在第二复位件8的作用下抵在凸轮5上并使凸轮5向锁壳1的内壁方向转动而抵死，这样即使断电了也可以使得凸轮5、滑杆6、挡块3不会在第二复位件8的作用力下运动，也即断电了锁具还能保持开锁状态，从而达到省电的目的。
上述第一复位件7为弹簧，其一端连接在锁壳1的内壁，其另一端与锁舌2的另一端连接。
进一步地，上述锁舌2的另一端设置有供第一复位件7连接的插销9。本实施例中，插销9插入锁舌2的另一端后靠卡簧10固定。
上述第二复位件8为弹簧，其一端套置在滑杆6的另一端，其另一端抵在锁壳1的内壁上。
本发明还包括安装在锁壳1内的电路板20，电路板20与动力装置4电性连接，用于接收外部的控制信号并控制动力装置4的工作状态。
本发明还包括安装在锁壳1内的滑杆座30，滑杆6的杆身部分（除去端部的活动槽61和挡板62）设置为异型截面，滑杆座30设置有与异型截面匹配的异型孔301。设置滑杆座30的作用在于稳定滑杆6的移动方向，并通过异型截面的杆身与异型孔301的匹配使得滑杆6在移动时不发生旋转，从而保证滑杆6的功能稳定性，保证滑杆6与挡块3之间的传动关系。本实施例中，滑杆座30分为上下两片夹设在滑杆6的上下面，以方便装配，且滑杆6的两端均设置有一个滑杆座30。
进一步地，上述滑杆6的杆身截面为十字型。
同时，锁壳1内设置有供滑杆座30定位配合的若干定位销13，滑杆座30与定位销13插接配合，并通过螺钉锁固在锁壳1的内壁，以保证滑杆座30的位置固定。
本发明还包括用于固定动力装置4的压板40，以保证动力装置4在锁壳1内的位置稳定，从而保证凸轮5对于滑杆6的驱动功能稳定。
本发明还包括第一转轴50、第二转轴60，第一转轴50、第二转轴60均安装在锁壳1内；锁壳1的中部套置在第一转轴50上，实现其与锁壳1的转动连接；挡块3的中部套置在第二转轴60上，实现其与锁壳1的转动连接。
上述锁壳1包括壳体1a和盖体1b；壳体1a设置有安装腔14，安装腔14的侧壁设置有上述锁孔11；盖体1b盖合在安装腔14的开口处，以使锁壳1呈封闭状态。本实施例中，壳体1a与盖体1b之间采用螺钉锁固，以实现可拆卸组装。此外，安装腔14内还设置有上述锁壳1包括的各种结构。
上述凸轮5、滑杆6均采用密度小的材质成型，如塑料，尽量减小凸轮5、滑杆6的重量，以减少外力敲击时凸轮5、滑杆6对于挡块的作用力，避免敲击开锁。
参考图8所示，本发明的上锁过程为：在开锁状态下，电机带动凸轮5反转，滑杆6在第二复位件8（也即弹簧）的作用下推动挡块3逆时针转动，此时如果锁舌2还处于开锁状态，则挡块3抵在锁舌2上；解除推动锁舌2的外力后，锁舌2将在第一复位件7的拉力作用下逆时针转动至上锁位置，锁舌2离开挡块3后，滑杆6将在第二复位件8的作用下继续推动挡块3逆时针转动，直到挡块3抵在凸台12上。此时，锁舌2的第一平面21与挡块3的第二平面31相对设置，当尝试推动锁舌2顺时针转动时，第一平面21将与第二平面31相抵，使得锁舌2无法进一步转动，锁舌2的一端无法缩回锁孔11内，也即无法开锁。
参考图9所示，本发明的开锁过程为：在上锁状态下，电机带动凸轮5正转，凸轮5抵在滑杆6的挡板62上并使滑杆6克服第二复位件8的弹力向右移动，并推动挡块3顺时针转动，凸轮5抵在锁壳1的内壁后不再转动，此时挡块3停止的位置可以避开锁舌2转动的运动轨迹，解锁完成，推动锁舌2即可完成开锁。
本发明的工作原理为（包括各种功能进一步提升的方案）：（一）防敲击开锁原理：①挡块3设计成其质心设置在挡块3的轴孔处，优选为轴孔中心与质心重合，这样实际生产的零件的质心会比较靠近第二转轴60的中心，可以最大限度的减小敲击后挡块3绕第二转轴60转动的转动惯量，并且挡块3的转动惯量要小于锁舌2的转动惯量。
②凸轮5、滑杆6采用如塑料、铝合金等密度小的材质成型，减小凸轮5、滑杆6的重量。
③锁舌2采用金属材质，并将锁舌2设计成偏心结构。
（二）防暴力开锁原理：上锁后尝试推动锁舌2开锁时，锁舌2的第一平面21和挡块3的第二平面31相抵，受力件为：锁舌2、挡块3、第一转轴50、第二转轴60、壳体1a和盖体1b，这些零件都为金属材质且可以设计出足够的厚度，可以确保锁具在尝试暴力开锁后零部件不会受损，依旧可以正常使用。
（三）省电原理：开锁时，电路板20给电机供电，电机带动凸轮5转动，直到凸轮5推动滑杆6后退之后抵在锁壳的内壁（也即壳体1a的侧壁）上，此时即可断电，这里设计成凸轮5与滑杆6上的挡板62的接触点低于电机轴的中心高度，这样可以确保断电后滑杆6不会推动凸轮5反转又导致上锁，而是滑杆6上的挡板62在第二复位件8的弹力作用下会抵在凸轮5上，凸轮5又抵在壳体1a的底壁上，这样即使断电了也可以凸轮5、滑杆6、挡块3不会在第二复位件8的弹力下运动，即可以断电了，锁具可以维持开锁状态，维持开锁一定时间后，电路板20又给电机供电，让电机带动凸轮5反转，滑杆6在第二复位件8的弹力下推动挡块3逆时针转动，当锁舌2恢复到上锁位置后挡块3也随之恢复到上锁位置。综上，只有在开锁和关锁时需要给电机供电，而且由于每次开关锁电机转动不到一圈，只需要零点几秒即可完成，开锁到关锁的这段时间可以不用给电机供电，这样即可保证每次开关锁只需要损耗很少的电量。
上述实施例和图式并非限定本发明的产品形态和式样，任何所属技术领域的普通技术人员对其所做的适当变化或修饰，皆应视为不脱离本发明的专利范畴。
Claims (11)
- 一种防敲击锁具，其特征在于：包括锁壳，以及设置在所述锁壳内的锁舌、挡块、动力装置、凸轮、滑杆、第一复位件和第二复位件；所述锁壳设置有锁孔；所述锁舌的中部与所述锁壳转动连接，其一端在所述锁孔处伸缩配合；所述挡块的中部与所述锁壳转动连接；所述动力装置与所述凸轮传动连接，用于驱动所述凸轮转动；所述凸轮与所述滑杆相对设置，所述滑杆随着所述凸轮的转动而移动；所述滑杆与所述锁壳滑接配合并指向所述锁孔，所述挡块随着所述滑杆的移动而转动，以实现限位或让位所述锁舌的转动；所述第一复位件用于提供弹力使得所述锁舌向上锁状态复位，上锁状态时所述锁舌的一端伸出所述锁孔；所述第二复位件用于提供弹力使得所述滑杆向上锁状态复位，上锁状态时所述滑杆带动所述挡块限位所述锁舌的转动。
- 如权利要求1所述的一种防敲击锁具，其特征在于：所述锁具受到外力敲击时，所述锁舌和所述挡块会转动，在所述挡块到达解锁位置前所述锁舌会与所述挡块接触。
- 如权利要求2所述的一种防敲击锁具，其特征在于：所述锁舌为偏心结构，且受相同的外力时所述锁舌的转动惯量大于所述挡块的转动惯量，以使所述锁舌的转动角度大于所述挡块的转动角度，所述锁舌与所述挡块接触时所述挡块处于限位所述锁舌往开锁方向转动的位置。
- 如权利要求2所述的一种防敲击锁具，其特征在于：所述锁舌的另一端设置有第一平面，所述挡块的一端设置有第二平面，锁具处于上锁状态时，所述第一平面与所述第二平面相对设置；所述锁具受外力敲击而使得所述锁舌与所述挡块接触时，所述第二平面的边缘抵住所述第一平面。
- 如权利要求2所述的一种防敲击锁具，其特征在于：所述挡块的质心位于其转轴处。
- 如权利要求1所述的一种防敲击锁具，其特征在于：所述挡块的一端设置有活动销，所述滑杆的一端径向开设有供所述活动销滑接配合的活动槽。
- 如权利要求1所述的一种防敲击锁具，其特征在于：所述锁壳内还设置有用于限位所述挡块转动角度的凸台。
- 如权利要求1所述的一种防敲击锁具，其特征在于：所述动力装置为电机，所述凸轮同轴连接在所述电机的电机轴上。
- 如权利要求1所述的一种防敲击锁具，其特征在于：所述滑杆上设置有供所述凸轮配合的挡板，所述凸轮与所述第二复位件分别配合在所述挡板的两侧。
- 如权利要求9所述的一种防敲击锁具，其特征在于：所述锁具处于开锁状态时，所述凸轮与所述挡板的接触点低于所述凸轮的轴心高度。
- 如权利要求1所述的一种防敲击锁具，其特征在于：所述第一复位件为弹簧，其一端连接在所述锁壳的内壁，其另一端与所述锁舌的另一端连接；所述锁舌的另一端设置有供所述第一复位件连接的插销；所述第二复位件为弹簧，其一端套置在所述滑杆的另一端，其另一端抵在所述锁壳的内壁上。
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