CN201011237Y

CN201011237Y - Inspection shaft cover lock

Info

Publication number: CN201011237Y
Application number: CNU2007200354656U
Authority: CN
Inventors: 张承烈; 张承亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-14
Filing date: 2007-03-14
Publication date: 2008-01-23
Anticipated expiration: 2017-03-14

Abstract

The utility model relates to a lock, in particular to a drain well cover lock fixedly locked the drain well cover, which comprises a lock body, a lock plunger and a lock cylinder mechanism; the unlocking end of the lock body is provided with a concave cavity, the opening end of the lock cylinder is arranged at the bottom of the concave cavity on the unlocking end of the lock body, the unlocking end of the lock body is also provided with a sealing device prevented the water penetrating into the lock body and corrupting the lock cylinder; the lock cylinder is axially sliding and radially rotating matched with the lock body, a fixing block pin is arranged between the lock cylinder and the lock body, the fixing block pin and two concave grooves arranged on the corresponded position on the lock body are formed to be the opening and closing of the drain well cover, thereby the structure of the utility model is simple and the processing procedures are reduced.

Description

Inspection shaft cover lock

Technical field

The utility model relates to a kind of lock, particularly a kind of Inspection shaft cover lock that locks the inspection shaft lid.

Background technology

At present, the inspection shaft lock kind that occurs on market and in the data is a lot, as patent announcement number be: a kind of manhole antitheft lock of CN2411314Y, its structure includes lock body, locking closure, block, spring fastener and key, locking bolt includes locking bolt head and locking bolt body, the locking bolt head is provided with dials tongue, and the locking closure inboard is provided with fore shaft, dials tongue and stretches out fore shaft; Block includes front, middle retaining and backstop, in block and have the set bar groove that is used to place the locking bolt body, spring and pad are contained on the locking bolt body between locking bolt head and middle retaining, have keyhole near the fore shaft place on the lock body, between keyhole and lockhole, be provided with antitheft card on the lock body, also be provided with the key block near the key place on the lock body, key matches with antitheft card and key block; The weak point of this manhole antitheft lock is mainly following several aspect, and 1, keyhole is exposed outside, and keeps away the infiltration of unavoidable ponding; 2, relative mistake and complexity on its structure have increased manufacturing procedure, make processing cost improve.

Summary of the invention

The utility model has overcome the deficiencies in the prior art, provides a kind of simple in structure, can prevent that ponding from infiltrating the Inspection shaft cover lock in the lock.

For achieving the above object, the utility model adopts following technical scheme: a kind of Inspection shaft cover lock, include lock body, locking bolt and lock core, described lock core places in the lock body, and lock core and locking bolt are in transmission connection, and the end of unblanking of lock body is provided with cavity, the lock core opening end places lock body to unblank to hold the bottom of cavity, the lock body end place of unblanking is provided with plugging device, and this plugging device and lock body are and removably connect, and such setting can prevent that ponding from immersing its internal corrosion lock core from the lock body end of unblanking.

Described plugging device can be divided into following several mode and be provided with: 1, plugging device is made up of screw and sealing ring, and screw unblanks to hold the cavity inner thread to be connected with lock body; 2, plugging device unblanks to hold the equal-sized projection socket of cavity shapes sealing ring to form by one with lock body, and this projection is provided with draw ring, and unblanks to hold the cavity socket to be connected with lock body.

The utility model further is set to: lock core cooperates with the lock body axial slip and radially rotation cooperation, and on the relevant position, be provided with back-moving spring, be provided with the location backing pin between lock core and the lock body, the groove of two relevant positions constitutes the unlatching and the closure of Inspection shaft cover lock on location backing pin and the lock body, like this be arranged so that this lock construction is simple, be convenient to install and use.

The utility model further is set to: lock core is a cylindrical major axis, lock core opening end place is provided with the piece of unblanking, this piece of unblanking is non-circular setting, and being revealed in lock body unblanks to hold in the cavity, be in the following lock core of piece of unblanking vertically and be provided with belt boss, be provided with the spring base of socket lock core in the lock body, described back-moving spring is socketed on the lock core between lock core boss and the lock body inner spring seat, lock body is with respect to offering two groups of corresponding grooves on the other end of unblanking to hold, on backing pin grafting of described location and the lock core, and two groups of corresponding groove inward turnings shift moving on lock body, constitute gear and cooperate, backing pin axially following extension and locking bolt in location is in transmission connection on the lock core.

Beneficial effect: unblank to hold the setting with sealing device of offering of cavity by lock body, prevented that ponding from immersing lock body internal corrosion lock core, on the lock body tail end on two groups of respective slot and the lock core setting of positioning pin and lock core and the simple connected mode of locking bolt reduced manufacturing procedure, be convenient to processing and use, thereby reduced cost of production.

The utility model is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the decomposing schematic representation of the utility model embodiment;

Fig. 3 is the user mode schematic diagram of the utility model embodiment;

The specific embodiment

As illustrated in fig. 1 and 2, a kind of Inspection shaft cover lock, include lock body 1, lock core 2 and locking bolt 3, lock body 1 is unblanked to hold and is provided with cavity 11, this cavity 11 be one have the shoulder rank shoulder hole, cavity 11 first end diameters are greater than the diameter of shoulder rank 111 following cavity inwalls, and cavity 11 inwalls of shoulder rank below 111 are provided with screw thread, its longitudinal section is " T " font, cavity 11 places also are provided with plugging device 4, plugging device 4 is made up of screw 41 and sealing ring 42, its screw 41 longitudinal sections also are " T " font, sealing ring 42 is socketed on the screw 41, and place lock body 1 to unblank to hold 111 places, shoulder rank in the cavity 11, plugging device 4 also can be made up of for the projection socket sealing ring of " T " font a longitudinal section, this projection places lock body 1 to unblank to hold cavity 11 places, it is revealed in outer end face and is provided with " U " shape draw ring, this draw ring casting is connected on the projection, make things convenient for projection in lock body 1 cavity 11, to take out, lock body 1 is with respect on the other end of unblanking to hold, two groups of corresponding grooves 12 had both been offered on lock body 1 tail end, lock core 2 is a cylindrical major axis, it is provided with the piece 21 of unblanking corresponding to lock core 2 heads of unblanking to hold vertically, this piece 21 of unblanking is non-circular setting, adopt the triangle setting in the present embodiment, lock core 2 is unblanked piece 21 to have the annular boss 22 with lock core 2 one, be provided with location backing pin 23 corresponding to lock body 1 tail end groove 11 places on the lock core 2, this location backing pin 23 and lock core 2 socket connections, also can be welded to connect, location backing pin 23 is rotated by external force with lock core 2, slippage in lock body 1 breech face and on groove 12 in, location backing pin 23 is along axially following being fastenedly connected along long bottom and locking bolt 3 partly of lock core 2 on the lock core 2, lock core 2 offers the short slot 24 of two symmetries along the bottom of long part, also offer corresponding with it square groove 31 on the locking bolt 3, locking bolt 3 is connected on the lock core 2 with the mode of nut 32 with stack, constitute threaded engagement, locking bolt 3 also can be welded to connect with lock core 2, be provided with in the lock body 1 and be connected with lock body 1 inner thread and the spacing ring 13 of socket lock core 2, be socketed with back-moving spring 5 on the lock core 2 between the annular boss 22 that spacing ring 13 and lock core 2 castings connect.

As shown in Figure 3, in the use, take away plugging device 4, key 6 is unblanked from lock body 1 in the end insertion cavity 11, key 6 unblanks to offer on the end face of end link the triangle cavity volume 61 that the piece 21 shape sizes of unblanking with lock core 2 heads are complementary, key 6 is press-down type to be promoted to cast the annular boss 22 that connects with lock core 2, lock core 2 moves with the active force of key 6, location backing pin 23 on the lock core 2 shifts out from one group of corresponding groove 12, the annular boss of being located on the lock core 2 22 also is compressed with back-moving spring 5 between the spacing ring 13 that lock body 1 internal thread is connected thereupon, lock core 2 stopped to move when back-moving spring 5 was compressed to certain limit, key 6 drives piece 21 rotations of unblanking of lock cores 2 heads, lock core 2 and the location backing pin 23 on it be rotation thereupon also, simultaneously, the angle of locking bolt 3 also changes with its interlock rotation, and when location backing pin 23 was in another group groove opposite 12 correspondence positions, key 6 stopped the rotation.

Claims

1. Inspection shaft cover lock, include lock body, locking bolt and lock core, described lock core places in the lock body, lock core and locking bolt are in transmission connection, it is characterized in that: the end of unblanking of lock body is provided with cavity, the lock core opening end places lock body to unblank to hold the bottom of cavity, and the lock body end place of unblanking is provided with plugging device, and this plugging device and lock body are and removably connect.

2. Inspection shaft cover lock according to claim 1, it is characterized in that: the cavity that described lock body unblanks to hold be one have the shoulder rank shoulder hole, described plugging device is made up of screw and sealing ring, be socketed on sealing ring on the screw and be close to lock body vertically and unblank to hold place, shoulder rank in the cavity, screw unblanks to hold the cavity inner thread to be connected with lock body.

3. Inspection shaft cover lock according to claim 1 is characterized in that: described plugging device unblanks to hold the equal-sized projection socket of cavity shapes sealing ring to form by one with lock body, and this projection is provided with draw ring, and unblanks to hold the cavity socket to be connected with lock body.

4. according to claim 1 or 2 or 3 described Inspection shaft cover locks, it is characterized in that: described lock core cooperates with the lock body axial slip and radially rotation cooperation, and on the relevant position, be provided with back-moving spring, be provided with the location backing pin between lock core and the lock body, the groove of two relevant positions constitutes the unlatching and the closure of Inspection shaft cover lock on backing pin and the lock body.

5. Inspection shaft cover lock according to claim 4, it is characterized in that: described lock core is a cylindrical major axis, lock core opening end place is provided with the piece of unblanking, this piece of unblanking is revealed in lock body and unblanks to hold in the cavity, be in the following lock core of piece of unblanking vertically and be provided with belt boss, be provided with the spring base of socket lock core in the lock body, described back-moving spring is socketed on the lock core between lock core boss and the lock body inner spring seat, lock body is with respect to offering two groups of corresponding grooves on the other end of unblanking to hold, on described backing pin grafting and the lock core, and two groups of corresponding groove inward turnings shift moving on lock body, constitute gear and cooperate, axially following extension and the locking bolt of backing pin is in transmission connection on the lock core.

6. Inspection shaft cover lock according to claim 5 is characterized in that: the piece of unblanking at described lock core opening end place is non-circular setting.