CN202023430U

CN202023430U - Box lock

Info

Publication number: CN202023430U
Application number: CN201120099022XU
Authority: CN
Inventors: 毛建华; 应高华
Original assignee: NINGBO HUAYUAN FRP ELECTRICAL APPLIANCE MANUFACTURE CO Ltd
Current assignee: NINGBO HUAYUAN FRP ELECTRICAL APPLIANCE MANUFACTURE CO Ltd
Priority date: 2011-03-31
Filing date: 2011-03-31
Publication date: 2011-11-02
Anticipated expiration: 2021-03-31

Abstract

The utility model discloses a box lock, which comprises a lock body and a lock buckle matched with the lock body. The lock body is a hollow bolt body and locked with a box cover by screwing a nut tightly through outer threads. A lock cylinder is axially limited and arranged inside the lock body and matched with the lock body in rotary mode. An axial protruding block is arranged at the bottom of the lock cylinder, and a lock bolt is arranged under the axial protruding block. The lock body under the lower end face of the lock cylinder is provided with a hole for the lock bolt to extend. The axial protruding block is contained inside a cavity of the lock bolt and provided with a vertical face for attaching to an inner lateral wall of the lock bolt close to the inside of the lock bolt. A return spring is arranged between the back lateral side of the lock bolt and the inner wall of the lock body. The box lock has the advantages that the box lock is convenient to install and dismantle, locking and tightness properties are good, and the lock bolt is not easy to break or distort.

Description

The casing lock

Technical field

The utility model relates to a kind of casing lock.

Background technology

At present, be used for the lock on electricity meter box, meter box, the telecommunications corridor case, adopt more lock core is installed on case lid, lock core is connected with a slice dead bolt, described dead bolt is connected with lock core by torsion spring, under nature dead bolt in vertical state, when compressing case lid, then dead bolt will overcome the elastic force and the fastening of the snap close on the casing of torsion spring, reaches the effect of locking chest.But this casing is with locking, and sealing is poor, will overcome the torsion spring active force during installation, installs complicated; And prolonged and repeated folding can cause the elasticity of torsion spring to reduce, thereby locking property is low, and the sealing of casing and case lid is poor; Because dead bolt is the thin sheet metal of monolithic, long-term use can cause fracture or distortion, thereby influences result of use again.

The utility model content

The utility model provides a kind of easy installation and removal at the above-mentioned deficiency of prior art, and locking property is good, sealing is high, and the casing lock of easy fracture and distortion not.

In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of casing lock, comprise the lock body that is installed on the case lid, and what cooperate with lock body is arranged at snap close on the casing, described lock body is the body of bolt of hollow, and lock body is by self external thread rotary jack panel and case lid locking; Being rotatably assorted also in the hollow position of described lock body, axial limiting has lock core; Described lock core bottom is provided with axial projection, and the below of described axial projection is provided with dead bolt; The lock body of the below, lower surface of described lock core is provided with for the flexible hole of dead bolt; Described axial projection is contained in the cavity of dead bolt; Described axial projection has one to be used for and the vertical face of dead bolt near inboard inside wall applying; Be provided with back-moving spring between the inwall of described dead bolt trailing flank and lock body.

Adopt said structure, during use, lock body is inserted in the installing hole that is arranged on the case lid, by nut lock body is fixed, lock onto on the case lid then, and be provided with snap close at the casing correspondence position; Use special-purpose unlocking tool (key) that the lock core of lock body inside is done coaxial rotating in a circumferential direction, then the axial projection of its underpart is from position that the inside wall near inboard of its vertical face and dead bolt fits, rotate to the perpendicular position of inside wall of its vertical face and dead bolt, can push against dead bolt in this process axial projection rearward moves, thereby compression reseting spring, make in the dead bolt retraction locking bar, promptly unblank; After the ineffective power of lock core, dead bolt returns to the home position and promptly stretches out lock body under the elastic force of back-moving spring, and the dead bolt fastening of stretching out is arranged in the snap close on the casing, thereby reaches the effect of fastened housing.This structure, installation, convenient disassembly, locking property is good, sealing is high, and dead bolt is easy fracture, distortion not.

As preferably, described dead bolt trailing flank (becoming trailing flank near the inner inboard dead bolt face of lock body) is provided with the M type groove that is used to embed back-moving spring.Back-moving spring is more firm like this.

As preferably, the hole that lock bodies is installed on the described case lid is a mounting hole, the waist shape of the cross section of its bar portion of described lock body for matching with mounting hole.The cross section of its bar portion of lock body of the described bolt shape that is hollow is waist shape, adopts this structure, when key turn lock core rotates, can not make the lock body rotation in the lock core outside, thereby has guaranteed the fastness between lock body and the case lid.

As preferably, be provided with the gap between described axial projection lower end and the dead bolt inwall bottom; Be provided with the gap between the lower surface of described dead bolt upper surface and lock core, thereby reduce the frictional force between dead bolt and the lock core, prevent between lock core and the dead bolt chucking and can't opening-closing lock.

As preferably, described lock body is concrete with the lock core axial limiting: be provided with axially vertical spacing hole on lock body, be provided with annular groove on the excircle of lock core correspondence position, the spacing hole interpolation has spacer pin, thereby reaches the limit effect between lock core and the lock body.

As preferably, the cross section of described axial projection is the smaller part circle, and promptly the vertical face of axial projection is a rectangle, and the another side is an arc surface.Adopt said structure, when back-moving spring bounce-back dead bolt, just can make axial projection be returned to the position that original vertical face and dead bolt inwall fit easily, can not cause projection and dead bolt stuck phenomenon.

Description of drawings

The sectional view structural representation of the lock body nature (reset condition is that dead bolt stretches out state) of Fig. 1 casing lock of the present utility model.

The sectional view structural representation of the dead bolt indentation lock body state of Fig. 2 casing lock of the present utility model.

Broken section figure structure schematic representation after Fig. 3 casing lock of the present utility model is installed on the casing.

Fig. 4 casing lock construction of the present utility model schematic diagram.

The dead bolt structural representation of Fig. 5 casing lock of the present utility model.

The axial projection structural representation of the lock core bottom of Fig. 6 casing lock of the present utility model.

As shown in the figure: 1. lock body, 1.1. spacing hole, 2. lock core, 2.1. axial projection, 2.2. annular groove, 3. dead bolt, 3.1.M type groove, 3.2. back-moving spring, 4. snap close, 5. nut.

The specific embodiment

Below by embodiment the utility model is described in further detail.

Shown in Fig. 1～6, this practical new a kind of casing lock comprises the lock body 1 that is installed on the case lid, and what cooperates with lock body 1 is arranged at snap close 4 on the casing, and described lock body 1 is the body of bolt of hollow, and lock body 1 is locked with case lid by self external thread rotary jack panel 5; Being rotatably assorted also in the hollow position of described lock body 1, axial limiting has lock core 2; Described lock core 2 bottoms are provided with axial projection 2.1, and the below of described axial projection 2.1 is provided with dead bolt 3; The lock body of the below, lower surface of described lock core 2 is provided with the hole for dead bolt 3 flexible turnover lock bodies; Described axial projection 2.1 is contained in the cavity of dead bolt 3; Described axial projection 2.1 has a vertical face that is used for fitting near inboard inside wall with dead bolt 3 (be back-moving spring when not having extruding force, axial projection 2.1 vertical face fit with the inside walls of dead bolt 3 near inboards) under nature; Be provided with back-moving spring 3.2 between the inwall of described dead bolt 3 trailing flanks and lock body 1.Described dead bolt 3 trailing flanks are provided with the M type groove 3.1 that is used to embed back-moving spring 3.2.

As preferably, the hole that lock bodies 1 is installed on the described case lid is a mounting hole, and the waist shape of the cross section of described lock body 1 its bar portion for matching with mounting hole reaches lock body 1 circumferential spacing effect, prevents to make lock body screw out from case lid when lock core rotates.

As preferably.Be provided with the gap between described axial projection 2.1 lower ends and the dead bolt 3 inwalls bottom; Be provided with the gap between the lower surface of described dead bolt 3 upper surfaces and lock core 2, thereby reduce the friction between dead bolt and the lock core.

Described lock body 1 is concrete with lock core 2 axial limitings: be provided with axially vertical spacing hole 1.1 on lock body 1, be provided with annular groove 2.2 on the excircle of lock core 2 correspondence positions, spacing hole 1.1 interpolations have spacer pin.

Adopt said structure, during use, lock body 1 is inserted in the installing hole that is arranged on the case lid (installing hole and lock body bar cross section match and be waist-shaped hole), fix, lock onto lock body 1 on the case lid by nut 5 by the external screw thread of lock body self then, (snap close is for being connected in the steel disc on the casing by screw and be provided with snap close 4 at the casing correspondence position, form the cavity of the ccontaining dead bolt of energy extending area between steel disc and the casing, do not mark among the figure); Use special-purpose unlocking tool (key) that the lock core 2 of lock body 1 inside is done coaxial rotating in a circumferential direction, then the axial projection 2.1 of its underpart is from position that the inside wall of its vertical face (perpendicular section) and dead bolt fits, rotate to the perpendicular position of inside wall of its vertical face and dead bolt, can push against dead bolt 3 in this process axial projection 2.1 moves to lock body inside, thereby compression reseting spring 3.2, make in the dead bolt 3 retraction locking bars, promptly unblank; After lock core 2 ineffective power, dead bolt 3 returns to the home position and promptly stretches out lock body under the elastic force of back-moving spring, in the dead bolt 3 fastening settings and the snap close 4 on the casing of stretching out, thereby reaches the effect of fastened housing.This structure, installation, convenient disassembly, locking property is good, sealing is high, and dead bolt is easy fracture, distortion not.

Claims

1. a casing is locked, comprise the lock body (1) that is installed on the case lid, what cooperate with lock body (1) is arranged at snap close (4) on the casing, and it is characterized in that: described lock body (1) is the body of bolt of hollow, and lock body (1) is by self external thread rotary jack panel (5) and case lid locking; Being rotatably assorted also in the hollow position of described lock body (1), axial limiting has lock core (2); Described lock core (2) bottom is provided with axial projection (2.1), and the below of described axial projection (2.1) is provided with dead bolt (3); The lock body of the below, lower surface of described lock core (2) is provided with for the flexible hole of dead bolt (3); Described axial projection (2.1) is contained in the cavity of dead bolt (3); Described axial projection (2.1) has one to be used for and the vertical face of dead bolt (3) near inboard inside wall applying; Be provided with back-moving spring (3.2) between the inwall of described dead bolt (3) trailing flank and lock body (1).

2. casing lock according to claim 1, it is characterized in that: described dead bolt (3) trailing flank is provided with the M type groove (3.1) that is used to embed back-moving spring (3.2).

3. casing lock according to claim 1, it is characterized in that: the hole that lock bodies on the described case lid (1) is installed is a mounting hole, the cross section of its bar portion of described lock body (1) is the waist shape that matches with mounting hole.

4. casing lock according to claim 1 is characterized in that: be provided with the gap between described axial projection (2.1) lower end and dead bolt (3) the inwall bottom; Be provided with the gap between the lower surface of described dead bolt (3) upper surface and lock core (2).

5. casing lock according to claim 1, it is characterized in that: described lock body (1) is concrete with lock core (2) axial limiting: be provided with axially vertical spacing hole (1.1) on lock body (1), be provided with annular groove (2.2) on the excircle of lock core (2) correspondence position, spacing hole (1.1) interpolation has spacer pin.

6. casing lock according to claim 1, it is characterized in that: the cross section of described axial projection (2.1) is the smaller part circle.