WO2011131083A1 - 一种锁孔盖 - Google Patents

一种锁孔盖 Download PDF

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Publication number
WO2011131083A1
WO2011131083A1 PCT/CN2011/072371 CN2011072371W WO2011131083A1 WO 2011131083 A1 WO2011131083 A1 WO 2011131083A1 CN 2011072371 W CN2011072371 W CN 2011072371W WO 2011131083 A1 WO2011131083 A1 WO 2011131083A1
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WO
WIPO (PCT)
Prior art keywords
sector gear
top cover
gear
keyhole
motor
Prior art date
Application number
PCT/CN2011/072371
Other languages
English (en)
French (fr)
Inventor
徐飞鹤
Original Assignee
Xu Feihe
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xu Feihe filed Critical Xu Feihe
Publication of WO2011131083A1 publication Critical patent/WO2011131083A1/zh

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/14—Closures or guards for keyholes
    • E05B17/147—Closures or guards for keyholes electrically-operated
    • 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
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B2047/0014—Constructional features of actuators or power transmissions therefor
    • E05B2047/0018—Details of actuator transmissions
    • E05B2047/002—Geared transmissions
    • E05B2047/0021—Geared sectors or fan-shaped gears
    • 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
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors

Definitions

  • This invention relates to a keyhole cover, and more particularly to the field of manufacturing technology for attaching an anti-theft device to various electric door locks.
  • the technical problem to be solved by the present invention is to provide a keyhole cover capable of overcoming the above-mentioned defects, which can be placed on the lock neck of the electric door lock to protect the original bare keyhole, so that the abnormal opening tool or the outside is strongly damaged.
  • the keyhole and the internal components of the electric door lock cannot be directly damaged, so the anti-theft effect can be greatly improved.
  • a keyhole cover includes a bottom case and a top cover, and the bottom case and the top cover are fixedly mounted and internally form a box cavity, wherein: the keyhole
  • the cover further includes a motor, a motor gear, a sector gear and a cap-shaped sealing member, the motor is fixedly mounted at a side of the bottom casing, and the motor shaft is tightly sleeved with the motor gear, and the motor gear meshes with the teeth of the sector gear and can drive the fan shape
  • the gear rotates to the left and the right; the bottom cover and the top cover respectively define a keyhole through hole for the key to be inserted and rotated, and a side of the keyhole through hole of the top cover is provided with a downward boss.
  • the other side of the keyhole through hole is provided with a sliding slot
  • the bottom shell is provided with a shaft hole adapted to the shaft column disposed on the top cover
  • the sector gear is also provided with a top cover
  • the shaft column is adapted to the gear shaft hole
  • the shaft column on the top cover passes through the bottom shaft hole and the gear shaft hole
  • the sector gear is installed in the box cavity between the top cover and the bottom case, and Rotating left and right around the shaft column
  • the top cover is further provided with a limiting platform
  • a concave table is arranged on the upper surface of one side of the sector gear, and a magnet is fixed at the center of the concave table, and one side of the concave table is close to the sector gear
  • One end edge, the other side of the middle of the sector gear is sloped
  • a cap-shaped sealing member is arranged between the sector gear and the top cover, and the cap-shaped sealing member can slide between the sliding groove of the top cover and the sector gear.
  • the cap-shaped sealing member has two cylindrical stepped shapes, and the diameter of the upper post is slightly smaller than the diameter of the lower post and the through hole of the lock hole, and the upper post is adapted to the through hole of the lock hole.
  • One end of the edge of the concave gear on the edge of the sector gear is provided with a wall, the height of the wall is higher than the upper surface of the sector gear, and the center of the wall is provided with a notch, the width of the notch is slightly larger than the convexity on the top cover The width of the table.
  • the sum of the thickness of the lower post of the cap-shaped sealing member and the sector gear is slightly smaller than the height of the inner cavity of the bottom case and the top cover after the fixed installation.
  • the invention has the advantages that: after the keyhole cover is completely closed, the upper column of the cap-shaped sealing member is sleeved with the locking hole, and the bottom portion of the lower column touches the upper surface portion of the sector gear, and the bottom surface portion of the sector gear contacts the bottom case Touching, the keyhole cover is placed on the lock neck to form an integration, and the whole structure is difficult to break down like a piece of iron which is overlapped; the closed state cap-shaped sealing member is equal to 360 degrees after being placed on the lock hole Fully protected by force, so as to achieve the purpose of anti-theft, its structure is simple, the manufacturing cost is low, easy to operate, and it is practically installed on the lock holes of various motorcycles, automobiles or various security doors to ensure more secure and anti-theft locks for various locks. More assured.
  • FIG. 1 is a schematic exploded view of the overall structure of a keyhole cover of the present invention
  • Figure 2 is a perspective view showing the position of the inner part after the closed state of the present invention
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 2;
  • Figure 4 is a perspective view showing the position of the internal component after the open state of the present invention
  • Figure 5 is a cross-sectional view taken along line BB of Figure 4
  • Figure 6 is a schematic view showing the structure between the motor gear, the sector gear and the cap-shaped sealing member after the internal part is closed;
  • Figure 7 is a schematic view showing the structure between the motor gear, the sector gear and the cap-shaped sealing member after the internal parts are opened;
  • Figure 8 is a perspective view showing the structure of the main body of the top cover
  • Figure 9 is a schematic view of the main body of the cap-shaped sealing member
  • Figure 10 is a perspective view of the main body of the sector gear. detailed description
  • the lock cover of the present invention is provided by the bottom case 1 and the top cover.
  • the motor 3, the motor gear 4, the sector gear 5, the cap-shaped sealing member 6, etc., the side of the bottom case 1 is provided with a position for fixing and fixing the motor 3, and the motor gear 4 is tightly sleeved on the motor shaft, and Engaged with the teeth of the sector gear 5 and can drive the sector gear 5 to rotate left and right;
  • the bottom shell 1 defines a keyhole through hole 9 corresponding to the inner diameter of the top cover 2, which are rounded, when the top cover 2 is
  • the two keyhole through holes 9 are opposite to each other and can be inserted and rotated by a key.
  • the bottom case 1 is provided with a shaft hole 10 which can be fitted with the shaft column 8 disposed on the top cover 2, and the inner diameter of the shaft hole 10 is slightly larger than the shaft column
  • the sector gear 5 is provided with a gear shaft hole 11, the inner diameter of the gear shaft hole 11 is equal to the inner diameter of the shaft shaft hole 10;
  • the sector gear 5 can be sleeved through the gear shaft hole 11 to the shaft column 8 of the top cover 2
  • the shaft post 8 of the top cover 2 is fitted with the shaft hole 10 of the bottom case 1 and the sector gear 5 is ensured in the cavity of the case 2 in which the top cover 2 and the bottom case 1 are fixed and fixed.
  • a recess 19 is provided at the upper surface of the left side of the sector gear 5; a magnet 7 is fixed at the center of the recess 19, and a side wall of the recess 19 adjacent to the center of the sector gear has a slope surface 12 shape.
  • a wall 13 is disposed near one end of the left side of the sector gear. The height of the wall 13 is higher than the plane of the upper surface of the sector gear 5. The center of the wall 13 is provided with a notch 14 having a width larger than that of the top cover.
  • the width of the boss 16 is set, and when the sector gear 5 rotates left and right, the boss 16 can be accommodated through the notch 14, and the cap-shaped sealing member 6 is placed in the recess 19 of the sector gear 5 and is magnetized by the center of the recess 19 7 magnetic suction, the hat-shaped sealing member 6 has two cylindrical stepped shapes, the diameter of the upper column 17 is smaller than the lower column 18 and the keyhole through hole 9 The diameter of the upper column 17 is matched with the keyhole through hole 9.
  • the top surface of the upper post 17 is located on the top cover 2 below the inner bottom of the chute 20 on the side of the keyhole through hole 9, and the lower post 18 is placed on the recess of the sector gear 5.
  • the diameter of the lower post 18 is slightly smaller than the diameter of the recess 19
  • the height is equal to the height of the ramp surface 12 on the recess 19 of the sector gear 5
  • the diameter of the upper post 17 is slightly smaller than the width of the chute 20;
  • the sector gear 5 keeps rotating, and the boss 16 holds the lower post 18 to remain in the keyhole.
  • the lower portion of the 9 is kept in an opposite state, and the continued rotation of the sector gear 5 causes the cap-shaped sealing member 6 to gradually slide away from the recess 19 along the slope surface 12 and
  • the magnet 7 in the center of the de-recessing table 19 is sucked until the left end surface of the sector gear 5 touches the limiting table 15, and the upper column 17 of the cap-shaped sealing member 6 is sleeved in the keyhole through hole 9, and the lower column 18 is The bottom portion is pressed against the upper surface portion of the right end of the sector gear 5, thus completing the mechanical closing process of the keyhole cover, thereby achieving the anti-theft target.
  • the closing process of the keyhole cover of the present invention is as follows: in actual use, the opening and closing of the invention is realized by switching the positive and negative rotation of the positive and negative power supply command motors by the integrated circuit board; the motor start and stop control detects the motor current When the current is suddenly increased when the rotor is blocked, the integrated circuit board immediately cuts off the power of the motor to avoid damage to the motor.
  • the motor gear 4 drives the sector gear 5 and is attracted to the concave while the motor 3 is energized to rotate the motor gear 4 in the counterclockwise direction.
  • the cap-shaped sealing member 6 on the table 19 rotates synchronously, and the cap-shaped sealing member 6 slides along the chute 20 by the urging force of the sector gear 5 until the upper post 17 is opposite to the keyhole through hole 9, and the side portion of the lower post 18 is touched. While the boss 16 is pressed against the boss 16 to prevent the cap-shaped sealing member 6 from continuing to slide forward, the sector gear 5 continues to rotate under the driving of the motor gear 4, so that the lower post 18 of the cap-shaped sealing member 6 is under the action of the boss 16.
  • the cap-shaped sealing member 6 sliding upward along the slope surface 12 of the sector gear 5, the cap-shaped sealing member 6 gradually slides away from the recess 19, and gets rid of the suction force of the magnet 7 at the center of the recess 19, and the right end of the sector gear 5 gradually aligns the cap-shaped sealing member 6
  • the notch 14 of the sector gear 5 is passed by the boss 16, until the left end side of the sector gear 5 touches the limit table 15, so that the current of the motor 3 is sharply increased, and the integration is realized.
  • the circuit board immediately cuts off the power supply to stop the motor 3, and the upper column 17 of the cap-shaped sealing member 6 is sleeved in the keyhole through hole 9, and the bottom surface portion of the lower column 18 body is pressed against the right end of the sector gear 5. The surface, this completes the entire process of closing the keyhole cover.
  • the opening process of the keyhole cover of the present invention is as follows: when the keyhole cover is in the fully closed state, the motor 3 is energized to drive the motor gear 4 to rotate in the clockwise direction, while the motor gear 4 drives the sector gear 5 to rotate synchronously, the sector gear 5
  • the left end side gradually disengages from the limit table 15 until the notch 14 of the recess 19 of the sector gear 5 is aligned with the boss 16, and the lower post 18 of the cap-shaped sealing member 6 opposes the recess 19 of the sector gear 5, concave
  • the center magnet 7 of the table 19 sucks the lower post 18 of the cap-shaped sealing member 6 into the recess 19, while the upper post 17 is disengaged from the keyhole through hole 9, and the sector gear 5 continues to rotate so that the boss 16 passes through the notch 14.
  • the sector gear 5 drives the cap-shaped sealing member 6 to slide along the bottom of the chute 20, and the straight cap
  • the sealing member 6 slides to the bottom of the chute 20, and when the right end side of the sector gear 5 touches the limiting table 15, the current of the motor 3 is sharply increased, and the integrated circuit board immediately cuts off the power supply to stop the motor 3, thus completing Lock hole cover opening work Cheng;
  • the wall station 13 may also serve to prevent debris into the keyhole as the internal structure of the normal impact cap hat-shaped sliding closure member 6, a closure hat member 6 provides more tensile forces acting upon the slide.

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  • Lock And Its Accessories (AREA)
  • Motor Or Generator Frames (AREA)

Description

一种锁孔盖 技术领域
本发明涉及一种锁孔盖，特别涉及在各种电门锁上附加防盗装置的 制造技术领域。 说
背景技术
日前，市场上的各种电门锁，比如用于摩托车的电门锁锁孔裸露，一 旦该锁受到非正常使用者的开锁，即外界书强扭力的破坏，装置在电门锁 内的骑缝片将被扭曲变形、 折断；由此，摩托车的车头锁随即被打开，锁 被开启，车辆被启动后被盗窃的事情已屡见不鲜， 若实施技能开锁，由于 锁孔本身裸露，电门锁在短时间内也极易被打开，不能起到有效的防盗、 保险作用。 发明内容
本发明要解决的技术问题， 在于提供一种能克服上述缺陷的锁孔盖， 它可以套置在电门锁的锁脖上保护原有裸露的锁孔，使非正常开启工具 或外界强破坏无法直接破坏锁孔及电门锁内部零部件，因此可以大大提 高了防盗效果。
本发明要解决的技术问题是这样实现的： 一种锁孔盖， 包括底壳和 顶盖， 所述底壳和顶盖固定安装后内部形成箱体空腔， 其特征在于： 所 述锁孔盖还包括马达、 马达齿轮、 扇形齿轮和帽形封口件， 所述马达固 定安装在底壳侧方处， 马达轴上紧套马达齿轮， 马达齿轮与扇形齿轮的 齿牙相啮合且可带动扇形齿轮左右旋转； 底壳与顶盖上分别相对应地开 设可供钥匙穿插及旋转的锁孔通孔， 所述顶盖上的锁孔通孔的一侧边设 有一向下的凸台， 该锁孔通孔的另一侧边设有一滑槽， 底壳上设有一可 与设置在顶盖上的轴柱相适配的轴孔， 扇形齿轮上也设有一可与顶盖上 的轴柱相适配的齿轮轴孔， 所述顶盖上的轴柱穿过底壳轴孔和齿轮轴 孔， 扇形齿轮安装在顶盖与底壳之间的箱体空腔内， 并可绕轴柱左右旋 转， 顶盖上还设置有一限位台， 所述扇形齿轮一侧边的上表面处设有一 凹台，凹台的中心处装设固定有磁铁， 凹台的一边靠近扇形齿轮的一端 边缘， 靠近扇形齿轮中部的另一边呈斜坡面状， 所述扇形齿轮和顶盖之 间还设有一帽形封口件， 该帽形封口件可以在顶盖的滑槽和扇形齿轮间 滑动。
所述帽形封口件是呈两个圆柱形的台阶状， 上柱的直径略小于下柱 及锁孔通孔的直径， 上柱与锁孔通孔相适配。
所述凹台的靠扇形齿轮边缘的一端设有一台墙， 台墙的高度高于扇 形齿轮的上表面， 台墙中央处设有槽口， 所述槽口的宽度略大于顶盖上 的凸台的宽度。
所述帽形封口件的下柱与扇形齿轮的厚度之和略小于底壳和顶盖 固定安装后内部形成箱体空腔的高度。
本发明的优点在于： 在锁孔盖完全关闭后帽形封口件的上柱套置锁 孔，下柱的底面部触碰在扇形齿轮的上表面部，扇形齿轮的底面部与底 壳相触碰， 锁孔盖又套置在锁脖上形成一体化，整个结构就如一片片重 叠的铁片很难将其击穿;关闭状态帽形封口件的上住套置锁孔后等于 360度全受力保险，从而达到防盗目的，其结构简单，制造成本低，易操作， 实用装于各种摩托车、 汽车或者各种防盗门的锁孔上，可保证各种锁具 更安全防盗，存放更放心。 附图说明
下面参照附图结合实施例对本发明作进一步的说明。
图 1为本发明锁孔盖的整体结构的爆炸示意图；
图 2为本发明关闭状态后内部零件所处位置的立体示意图； 图 3为图 2的 A-A剖示图；
图 4为本发明开启状态后内部零件所处位置的立体示意图； 图 5为图 4的 B-B剖示图； 图 6为内部零件关闭状态后马达齿轮、 扇形齿轮和帽形封口件之间 的结构示意图；
图 7为内部零件开启状态后马达齿轮、 扇形齿轮和帽形封口件之间 的结构示意图；
图 8为顶盖主体结构立体示意图；
图 9为帽形封口件的主体示意图；
图 10为扇形齿轮的主体立体示意图。 具体实施方式
请同时参阅图 1至图 10所示， 本发明一种锁孔盖，由底壳 1、 顶盖
2、 马达 3，马达齿轮 4，扇形齿轮 5、 帽形封口件 6等组成的，底壳 1侧方 处设有可装置并固定马达 3的位置， 马达齿轮 4紧套在马达轴上， 并与 扇形齿轮 5的齿牙相啮合且可带动扇形齿轮 5左右旋转； 底壳 1上开设 有一与顶盖 2上开设内径一致的锁孔通孔 9，其均呈圆形状， 当顶盖 2与 底壳 1装合固定时， 两锁孔通孔 9中心相对且可供钥匙穿插及旋转， 所 述顶盖上的锁孔通孔 9的一侧边设有一向下的凸台 16，该锁孔通孔 9的 另一侧边设有一滑槽 20; 底壳 1上设有一可与设置在顶盖 2上的轴柱 8 相套配的轴孔 10， 轴孔 10的内径略大于轴柱 8的外径； 扇形齿轮 5上 设有一齿轮轴孔 11， 齿轮轴孔 11的内径与底壳轴孔 10的内径相等； 扇 形齿轮 5通过齿轮轴孔 11可套置顶盖 2的轴柱 8装置在顶盖 2与底壳 1 装合固定后的箱体空腔内，同时顶盖 2的轴柱 8与底壳 1的轴孔 10套配 且又能保证扇形齿轮 5的左右旋转； 扇形齿轮 5左侧边的上表面处设有 一凹台 19; 凹台 19的中心处装设固定有磁铁 7，凹台 19的靠近扇形齿 轮中心的一端侧壁呈斜坡面 12状， 其靠近扇形齿轮左侧边的一端设有 一台墙 13， 台墙 13的高度高于扇形齿轮 5的上表面的平面，台墙 13中 央处设有槽口 14， 槽口 14的宽度大于顶盖 2上设置凸台 16的宽度， 在 扇形齿轮 5左右旋转时可容纳凸台 16穿过槽口 14， 帽形封口件 6放置 在扇形齿轮 5的凹台 19内并被凹台 19中心的磁铁 7磁力吸住，帽形封 口件 6呈两个圆柱形的台阶状，上柱 17的直径小于下柱 18及锁孔通孔 9 的直径， 上柱 17并与锁孔通孔 9相适配； 当锁孔盖装合固定后， 锁孔 通孔 9处于完全开启状态时， 扇形齿轮 5的右端台面触碰在顶盖 2上设 置的限位台 15上， 上柱 17的顶面部处在顶盖 2上开设在锁孔通孔 9侧 边的滑槽 20的内底部的下方，下柱 18置于扇形齿轮 5的凹台 19内，下 柱 18的直径宽度略小于凹台 19 的直径宽度，高度与扇形齿轮 5的凹台 19上的斜坡面 12高度相等，上柱 17 的直径略小于与滑槽 20宽度； 当 锁孔通孔 9准备开始关闭时， 扇形齿轮 5在马达齿轮 4的带动下开始转 动， 上柱 17在沿滑槽 20滑行至与锁孔通孔 9相对置时，下柱 18的侧面 部触碰在凸台 16，由于凸台 16可以穿过台墙 13中央处设有槽口 14， 因 此扇形齿轮 5保持继续转动的同时， 凸台 16扣住下柱 18使其继续留在 锁孔通孔 9的下方保持相对置的状态， 扇形齿轮 5的继续旋转使帽形封 口件 6沿斜坡面 12渐滑离凹台 19及摆脱凹台 19中心的磁铁 7吸力，直 至扇形齿轮 5的左端面触碰在限位台 15上，帽形封口件 6的上柱 17套 置在锁孔通孔 9内，下柱 18体的底面部顶压在扇形齿轮 5右端的上表面 部，这样完成了锁孔盖机械结构关闭工作流程，从而达到防盗目地。
本发明的锁孔盖的关闭过程如下:本发明在实际使用时，其开启和关 闭是依靠集成线路板来切换正、 负极电源指令马达的正反转来实现的； 马达启停控制检测马达电流， 当堵转时电流急剧增加， 集成电路板立即 切断马达电源， 避免造成马达损坏。 如图 1至图 10所示，当锁孔盖处于 完全开启状态准备开始关闭时， 由马达 3通电带动马达齿轮 4沿逆时针 方向旋转的同时， 马达齿轮 4带动扇形齿轮 5及被吸附在凹台 19上的 帽形封口件 6同步旋转，帽形封口件 6靠扇形齿轮 5的推动力沿滑槽 20 道滑行，直至上柱 17与锁孔通孔 9相对，下柱 18的侧面部触碰在凸台 16 上阻止帽形封口件 6再继续向前滑行的同时，扇形齿轮 5在马达齿轮 4 的带动下继续转动， 这样帽形封口件 6的下柱 18在凸台 16的作用下， 沿扇形齿轮 5的斜坡面 12向上滑动，帽形封口件 6渐滑离凹台 19，并摆 脱凹台 19中心的磁铁 7吸力的作用， 扇形齿轮 5的右端逐步将帽形封 口件 6向锁孔方向上顶，扇形齿轮 5的槽口 14被凸台 16穿过， 直至扇 形齿轮 5的左端侧面触碰在限位台 15上，使马达 3电流急剧增加， 集成 线路板立即切断电源使马达 3停转，此时帽形封口件 6的上柱 17体套置 在锁孔通孔 9内， 下柱 18体的底面部顶压在扇形齿轮 5的右端的上表 面， 这样就完成了锁孔盖关闭工作全过程。
本发明的锁孔盖的开启过程如下：当锁孔盖处于完全关闭状态时，马 达 3通电带动马达齿轮 4沿顺时针方向旋转的同时， 马达齿轮 4带动扇 形齿轮 5同步旋转，扇形齿轮 5的左端侧面渐渐脱离限位台 15，直至扇形 齿轮 5的凹台 19的槽口 14与凸台 16对齐的同时，帽形封口件 6的下柱 18与扇形齿轮 5的凹台 19对置，凹台 19的中心磁铁 7将帽形封口件 6 的下柱 18体吸至凹台 19内，同时上柱 17与锁孔通孔 9脱离，扇形齿轮 5 继续转动使凸台 16穿过槽口 14，帽形封口件 6的下柱 18的侧面部触碰 在扇形齿轮 5凹台 19下端台墙 13的内壁时，扇形齿轮 5带动帽形封口 件 6沿滑槽 20道底部滑行，直致帽形封口件 6滑至滑槽 20道底部，扇形 齿轮 5的右端侧面触碰在限位台 15上时， 使马达 3电流急剧增加， 集 成线路板立即切断电源使马达 3停转 ，这样完成了锁孔盖开启的工作过 程； 所述台墙 13还可以起到防止因为杂物进入锁孔盖结构内部影响帽 形封口件 6的正常滑动时， 用于帽形封口件 6在滑动时提供更强的拉力 的作用。

Claims

权 利 要 求 书
1、 一种锁孔盖， 包括底壳和顶盖， 所述底壳和顶盖固定安装后内 部形成箱体空腔， 其特征在于： 所述锁孔盖还包括马达、 马达齿轮、 扇 形齿轮和帽形封口件， 所述马达固定安装在底壳侧方处， 马达轴上紧套 马达齿轮， 马达齿轮与扇形齿轮的齿牙相啮合且可带动扇形齿轮左右旋 转； 底壳与顶盖上分别相对应地开设可供钥匙穿插及旋转的锁孔通孔， 所述顶盖上的锁孔通孔的一侧边设有一向下的凸台， 该锁孔通孔的另一 侧边设有一滑槽， 底壳上设有一可与设置在顶盖上的轴柱相适配的轴 ？ L, 扇形齿轮上也设有一可与顶盖上的轴柱相适配的齿轮轴孔， 所述顶 盖上的轴柱穿过底壳轴孔和齿轮轴孔， 扇形齿轮安装在顶盖与底壳之间 的箱体空腔内， 并可绕轴柱左右旋转， 顶盖上还设置有一限位台， 所述 扇形齿轮一侧边的上表面处设有一凹台； 凹台的中心处装设固定有磁 铁， 凹台的一边靠近扇形齿轮的一端边缘， 靠近扇形齿轮中部的另一边 呈斜坡面状， 所述扇形齿轮和顶盖之间还设有一帽形封口件， 该帽形封 口件可以在顶盖的滑槽和扇形齿轮间滑动。
2、 根据权利要求 1所述的锁孔盖， 其特征在于： 所述帽形封口件 是呈两个圆柱形的台阶状， 上柱的直径略小于下柱及锁孔通孔的直径， 上柱与锁孔通孔相适配。
3、 根据权利要求 1所述的锁孔盖， 其特征在于： 所述凹台的靠扇 形齿轮边缘的一端设有一台墙， 台墙的高度高于扇形齿轮的上表面， 台 墙中央处设有槽口， 所述槽口的宽度略大于顶盖上的凸台的宽度。
4、 根据权利要求 2所述的锁孔盖， 其特征在于： 所述帽形封口件 的下柱与扇形齿轮的厚度之和略小于底壳和顶盖固定安装后内部形成 箱体空腔的高度。
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