CN2060801U

CN2060801U - Padlock being able to guard against theft

Info

Publication number: CN2060801U
Application number: CN 89221594
Authority: CN
Inventors: 魏志武
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-12-27
Filing date: 1989-12-27
Publication date: 1990-08-22

Abstract

Disclosed is a theft-proof padlock which belongs to a technical improvement for enhancing the use reliability of padlocks, mainly comprising a lock body, a lock beam, a lock core, a cylinder, a positioning pin and a spring. The utility model is characterized in that the lock beam (2) is provided with a gap matching with a steel ball (3), the lateral face of a cylindric position controlling block (4) is provided with an arc-shaped slot symmetrically, and the lock core (5) is provided with a small cylinder matching with a hole on the position controlling block (4). The utility model improves the tensile strength of locks because the traditional slope-shaped lock tongue structure is replaced by the steel ball and the position controlling block. Besides, the utility model prevents the padlock from being prized in a key hole by an object effectively.

Description

Padlock being able to guard against theft

A kind of theft proof padlock belongs to a kind of technological improvement that improves padlock dependability aspect.

This class padlock of the prior art is to adopt sloping type dead bolt structure to snap in half v-notch on the lock bridge and realize locking, the pulling force of this structure lock bridge acts directly on the dead bolt head with the shearing force form, when lock bridge was subjected to bigger outer active force, dead bolt lost the result of use of lock easily by draw ring.And insert easily the contact dead bolt with foreign matter from keyhole and prize and open, security reliability is poor.

The purpose of this utility model is to overcome weak point of the prior art and a kind of novel pad lock structure is provided, it changes the mode of action of power in the past, the pulling force that makes lock bridge acts on the chucking body with the form of extruding force, open thereby improved the tensile strength of padlock greatly and be not easy to prize, increased the security reliability of lock with foreign matter.

The purpose of this utility model can reach by following measure: mainly contain in the padlock of lock body, lock bridge, lock core, pellet shot from a slingshot, marble spring, alignment pin, locating pin spring, lock bridge spring and return spring composition, the inboard symmetric position of drawing money on credit and lacking on propping up at lock bridge is respectively opened an arc notch, the size of its breach and the diameter of steel ball adapt, and have a control position piece that is cylinder type respectively to drive the deep-slotted chip breaker of a depression in its side symmetry.Be locked under the closed condition steel ball card on the arc notch of lock bridge, and withstand by the cylindrical side cylinder of control position piece.Being locked in the deep-slotted chip breaker that caves on the piece of opening time control position goes to and the corresponding position of steel ball.The small cylinder that a pair of protrusion is arranged on the lock core end face inserts respectively when assembling in a pair of small sircle hole on the piece bottom surface, control position.Lock bridge is drawn money on credit and is upward had an arc-shaped ring groove near the head that props up, and locks steel ball card adjacent with it after opening thereon.

Accompanying drawing 1 is overall structure master's sectional view of theft proof padlock.

Accompanying drawing 2 is left views of theft proof padlock.

Accompanying drawing 3 is front views of control position piece.

Accompanying drawing 4 is left views of control position piece.

The utility model is further described embodiment below in conjunction with accompanying drawing: offer two blind holes on the upper surface of lock body (1) for inserting lock bridge (2), long and short opposed inside symmetry of lock bridge (2) respectively open an arc notch, the diameter of its size and steel ball (3) adapts, it is last near opening an arc-shaped ring groove in the head place to draw money on credit at lock bridge (2), settles a lock bridge spring (10) below drawing money on credit.In the bottom of lock body (1) by the bottom surface upward to having for the hole of placing steel ball (3), control position piece (4) and lock core (5), steel ball (3) enters the transverse holes of lock body after bottom outlet is put into, and the control position piece (4) that is placed into separate to about respectively one.Two small cylinders that protrude on lock core (5) top insert respectively in the aperture of controlling on the position piece (4).Place in the hole that pellet shot from a slingshot (6), marble spring (7), alignment pin (8), locating pin spring (9) and return spring (11) are offered by lock body (1) side respectively.Return spring (11) withstands on the nest of leaving lock core (5) side.

The utility model theft proof padlock is work like this: press down lock bridge, lock bridge spring retraction, when lock bridge moves to steel ball when aiming at its arc notch, a steel ball part enters breach, steel ball disappears to the restraint forces of control position piece, because the effect lock core of return spring rotates and resets, also forward latched position (the piece face of cylinder, a control position correspondence steel ball) to by the lock core drive and control the position piece at this moment, steel ball blocks lock bridge makes lock be in closed condition.

When using key rotation lock core, and the small cylinder that passes through to insert on it in piece aperture of control position drives when controlling the position piece to lockset position of coupler (the deep-slotted chip breaker correspondence steel ball of control position piece depression), a steel ball part enters in the piece Baltimore groove of control position, lost lock bridge has been held power, lock bridge is upspring under the effect of lock bridge spring, when lock bridge was upspring to the corresponding steel ball of the spill annular groove of the termination of drawing money on credit position, the steel ball that is adjacent blocked, and makes lock bridge can not skid off lock body.Because lock is opened the back steel ball and entered a control position piece arc groove, and bear against a control position piece it can not be rotated, thereby lock core can not be resetted, key can not be transferred to.Increased the utility function of lock from another point of view.

The utility model is owing to adopted steel ball and control position piece locking mechanism, and tensile strength improves greatly, and the obstruction power to lock during locking greatly reduces, and has effectively prevented from pulling out the sledge dead bolt with foreign matter from keyhole. Compare with similar padlock of the prior art, use flexibly, the life-span is long, the security reliability height.

Claims

1, a kind of theft proof padlock, mainly by lock body (1), lock bridge (2), lock core (5), pellet shot from a slingshot (6), marble spring (7), alignment pin (8), locating pin spring (9), pin beam spring (10) and return spring (11) are formed, it is characterized in that respectively opening an arc notch in the inboard symmetric position of drawing money on credit and lacking on propping up of lock bridge (2), the diameter of its notch size and steel ball (3) adapts, the one control position piece (4) that is cylinder type is arranged, respectively drive the deep-slotted chip breaker of a depression in its side symmetry, the small cylinder that a pair of protrusion is arranged on lock core (5) end face, small cylinder insert respectively in a pair of small sircle hole of controlling on piece (4) bottom surface, position.

2, theft proof padlock according to claim 1 is characterized in that lock bridge (2) has an arc-shaped ring groove near the head that props up on drawing money on credit.