CN214615894U

CN214615894U - Safety handle for mechanical lock

Info

Publication number: CN214615894U
Application number: CN202120405160.XU
Authority: CN
Inventors: 朱乔慧; 徐昌杰; 温安达; 原婧
Original assignee: Taiyuan Jingyue Security Technology Co ltd
Current assignee: Taiyuan Jingyue Security Technology Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-11-05
Anticipated expiration: 2031-02-24

Abstract

The utility model relates to a safety handle for a mechanical lock, which belongs to the technical field of mechanical locks and particularly comprises a handle thumb wheel arranged on a mechanical lock fixing plate, wherein an annular control plate is arranged on the circumference of the handle thumb wheel, a poking V-shaped groove is arranged on the annular control plate, a step through hole is arranged at the center of the handle thumb wheel, an inner rotary column and an outer rotary column are also arranged in the step through hole, non-conductive square shaft holes are respectively arranged on the inner rotary column and the outer rotary column, the square shaft holes are respectively used for connecting an inner opening door and an outer opening door to rotate a square shaft, the inner rotary column is connected with the handle thumb wheel through a limiting mechanism, two limiting column arc-shaped grooves are arranged on the circumference of the outer rotary column, corresponding to the two limiting column arc-shaped grooves, limiting columns are arranged in the limiting column arc-shaped grooves, the end parts of the limiting columns are also inserted in the limiting column rectangular grooves, a plurality of springs are also arranged outside the handle thumb wheel, the utility model discloses simple structure, the overload dynamics is controllable, long service life.

Description

Safety handle for mechanical lock

Technical Field

The utility model relates to a safety handle is used to mechanical lock belongs to mechanical lock technical field.

Background

The patent publication No. CN 111593957A, the patent name of which is China invention patent of electromechanical integrated lock core, discloses a square shaft rotating connector, and realizes unlocking by controlling the rotation of an anti-poking fixing frame by using the square shaft rotating connector. Meanwhile, the square shaft rotating connector mainly comprises a square sleeve, a middle sleeve and an outer side sleeve, and the square shaft is rotated to prevent the lock cylinder from being opened due to violent rotation under the action of external force. When the square shaft is rotated violently, the positioning chute on the square sleeve overcomes the elasticity of the spring, the spring is extruded to be compressed, the spring positioning shaft automatically retracts and is separated from the square sleeve, the square sleeve idles, and then the square shaft is rotated to idle, so that the lock cylinder cannot be opened.

However, although the structure can prevent violent opening, the structure has poor reliability, overload strength is not easy to control, and repeated use has the problem of easy failure.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem that prior art exists, the utility model provides a simple structure, the overload dynamics is controllable, long service life's safety handle is used to mechanical lock.

In order to achieve the above object, the technical solution adopted by the present invention is a safety handle for a mechanical lock, comprising a handle dial wheel mounted on a mechanical lock fixing plate, wherein an annular control plate is arranged on the circumference of the handle dial wheel, a V-shaped groove is arranged on the annular control plate, a step through hole is arranged at the center of the handle dial wheel, an inner rotary column and an outer rotary column are further mounted in the step through hole, non-conductive square shaft holes are respectively arranged on the inner rotary column and the outer rotary column, the square shaft holes are respectively used for connecting an inner and outer opening door rotating square shaft, the inner rotary column is connected with the handle dial wheel through a limiting mechanism, two limiting column arc-shaped grooves are arranged on the circumference of the outer rotary column, corresponding to the two limiting column rectangular grooves are arranged on the handle dial wheel, a limiting column is mounted in the limiting column arc-shaped grooves, and the end of the limiting column is further inserted in the limiting column rectangular grooves, the central line of spacing post and the coincidence of the central line of spacing post rectangular channel, a plurality of spring rands are still installed to the outside of handle thumb wheel, the spring rand is used for fixing spacing post at spacing post arc wall, spacing post rectangular channel.

Preferably, the limiting mechanism mainly comprises a limiting block arranged in the step through hole and an annular convex edge arranged on the circumference of the inner rotary column, an arc-shaped limiting groove is formed in the annular convex edge, and the limiting block is clamped in the arc-shaped limiting groove.

Preferably, the handle thumb wheel is provided with a torsion spring and an annular clamping plate at two ends, the two sides of the end of the handle thumb wheel are provided with clamping grooves corresponding to the clamping grooves, the inner ring of the annular clamping plate is provided with a limiting protrusion clamped in the clamping grooves, the circumference of the annular clamping plate is further provided with clamping hooks, the clamping hooks and the torsion spring are clamped on the connecting column respectively, and the connecting column is arranged on the mechanical lock fixing plate.

Preferably, the end part of the square shaft hole of the inner rotary column is provided with a circular groove, and an anti-drilling wafer for placing drilling is further arranged in the circular groove.

Compared with the prior art, the utility model discloses following technological effect has: the utility model discloses simple structure, convenient to use utilizes the spacing post of spring rand locking to realize the synchronous rotation of the rotation square shaft of the outwardly opening door and handle thumb wheel. When the key is not used for violent opening, the outward opening door is forcibly rotated to rotate the square shaft, and the limiting column pushes the spring retainer ring open, so that the outward rotating column is separated from the limiting column, and idling is realized. The structure has controllable overload force, large overload force, larger overload protection force than the existing pressure spring, long repeated service life and the function of protecting the safety of the lock cylinder under the state of ensuring normal use.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the installation structure of the spring retainer ring of the present invention.

Fig. 3 is a schematic diagram of the internal structure of the present invention.

Fig. 4 is a schematic structural view of the middle handle thumb wheel of the present invention.

Fig. 5 is a schematic structural view of the middle and inner rotary column of the present invention.

Fig. 6 is a schematic structural view of the outer rotary column of the present invention.

Fig. 7 is a schematic structural view of the middle limiting mechanism of the present invention.

Fig. 8 is a schematic view of the installation structure of the middle ring-shaped clamping plate of the present invention.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 6, a safety handle for a mechanical lock comprises a handle thumb wheel 2 mounted on a mechanical lock fixing plate 1, an annular control plate 3 is arranged on the circumference of the handle thumb wheel 2, a V-shaped poking groove 4 is arranged on the annular control plate 3, a step through hole 5 is arranged at the center of the handle thumb wheel 2, an inner rotating column 6 and an outer rotating column 7 are further mounted in the step through hole 5, non-conductive square shaft holes 8 are respectively arranged on the inner rotating column 6 and the outer rotating column 7, the square shaft holes 8 are respectively used for connecting an inner and outer opening door rotating square shaft, the inner rotating column 6 is connected with the handle thumb wheel 2 through a limiting mechanism, two limiting column arc-shaped grooves 9 are arranged on the circumference of the outer rotating column 7, two limiting column rectangular grooves 10 are correspondingly arranged on the handle thumb wheel 2, a limiting column 11 is mounted in the limiting column arc-shaped grooves 9, and the end of the limiting column 11 is further inserted in the limiting column rectangular grooves 10, the central line of spacing post 11 and the coincidence of the central line of spacing post rectangular channel 10, a plurality of spring rand 12 are still installed to the outside of handle thumb wheel 2, and spring rand 12 is used for fixing spacing post in spacing post arc wall, spacing post rectangular channel.

The utility model discloses an installation internal rotation post 6 and external rotation post 7 in handle thumb wheel 2, internal rotation post 6 is connected with the handle thumb wheel through stop gear, makes the internal opening door rotate the square shaft and can rotate the realization and open the door by direct control handle thumb wheel. The outward rotating column 7 is connected with the handle thumb wheel through a limiting column and a spring retainer ring, the limiting column is respectively clamped in a limiting column groove of the outward rotating column and the handle thumb wheel, and the limiting column is locked through a plurality of spring retainer rings, so that when the outward rotating column is normally opened, the outward rotating square shaft of the outward opening door controls the outward rotating column to rotate, and the handle thumb wheel can normally rotate under the action of the limiting column; when the lock is illegally opened, the handle thumb wheel cannot normally rotate under the limitation of the key safety sheet, the outward opening door rotates the square shaft to apply outward force to the limiting column to open the spring retainer ring, the outward rotating column and the limiting column are separated to rotate, the outward rotating column is in idle rotation, the handle thumb wheel cannot be driven to rotate, and the safety of the lock cylinder lock body is protected.

As shown in fig. 7, the limiting mechanism mainly comprises a limiting block 13 installed in the step through hole and an annular convex edge 14 arranged on the circumference of the inner rotary column, an arc-shaped limiting groove 15 is arranged on the annular convex edge 14, and the limiting block 13 is clamped in the arc-shaped limiting groove 15. The inner rotary column is controlled by the arc-shaped limiting groove and the limiting block, so that the inner rotary column can drive the rotation of the handle thumb wheel. The length of the arc-shaped limiting groove enables the inward opening door to rotate the square shaft to have a certain idle rotation angle, and then the rotation range of the handle thumb wheel is met.

In addition, as shown in fig. 8, a torsion spring 16 and an annular clamping plate 17 are respectively installed at two ends of the handle thumb wheel 2, clamping grooves 18 are respectively formed in two sides of the end portion of the handle thumb wheel 2, and correspondingly, a limiting protrusion 19 is arranged on an inner ring of the annular clamping plate 17, the limiting protrusion 19 is clamped in the clamping groove 18, a clamping hook 20 is further arranged on the circumference of the annular clamping plate 17, the clamping hook 20 and the torsion spring 16 are respectively clamped on a connecting column 21, and the connecting column 21 is installed on the mechanical lock fixing plate 1. The torsion spring 16 and the annular clamping plate 17 mainly control the handle cam to be capable of automatically resetting, and the annular clamping plate and the handle thumb wheel are clamped and fixed, so that the fixing is simple and convenient. The square shaft hole end part of the internal rotation column 6 is provided with a circular groove, an anti-drilling wafer 22 for placing drilling is further installed in the circular groove, the anti-drilling wafer 22 can freely rotate in the circular groove, and then the electric drill outdoor is prevented from being damaged.

The foregoing is considered as illustrative and not restrictive, and any modifications, equivalents, and improvements made within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims

1. The utility model provides a safe handle is used to mechanical lock, is including installing the handle thumb wheel on mechanical lock fixed plate, be provided with the ring control board on the circumference of handle thumb wheel, be provided with on the ring control board and stir V type groove, its characterized in that: the handle thumb wheel is characterized in that a step through hole is formed in the center of the handle thumb wheel, an inner rotating column and an outer rotating column are further installed in the step through hole, non-conductive square shaft holes are formed in the inner rotating column and the outer rotating column respectively and are used for being connected with an inner and outer opening door rotating square shaft respectively, the inner rotating column is connected with the handle thumb wheel through a limiting mechanism, two limiting column arc-shaped grooves are formed in the circumference of the outer rotating column and correspond to the limiting column arc-shaped grooves, two limiting column rectangular grooves are formed in the handle thumb wheel, limiting columns are installed in the limiting column arc-shaped grooves, the end portions of the limiting columns are further inserted into the limiting column rectangular grooves, the central lines of the limiting columns coincide with the central lines of the limiting column rectangular grooves, a plurality of spring clamping rings are further installed on the outer portion of the handle thumb wheel, and the spring clamping rings are used for fixing the limiting columns in the limiting column arc-shaped grooves and the limiting column rectangular grooves.

2. The safety handle for a mechanical lock according to claim 1, wherein: the limiting mechanism mainly comprises a limiting block arranged in the step through hole and an annular convex edge arranged on the circumference of the inner rotary column, an arc-shaped limiting groove is formed in the annular convex edge, and the limiting block is clamped in the arc-shaped limiting groove.

3. The safety handle for a mechanical lock according to claim 1, wherein: the handle comprises a handle thumb wheel and is characterized in that a torsion spring and an annular clamping plate are respectively installed at two ends of the handle thumb wheel, clamping grooves are formed in two sides of the end portion of the handle thumb wheel and correspond to the clamping grooves, limiting protrusions are arranged on the inner ring of the annular clamping plate and clamped in the clamping grooves, clamping hooks are further arranged on the circumference of the annular clamping plate and are respectively clamped on a connecting column, and the connecting column is installed on a mechanical lock fixing plate.

4. The safety handle for a mechanical lock according to claim 1, wherein: the square shaft hole end part of the inner rotary column is provided with a circular groove, and an anti-drilling wafer for placing drilling is further arranged in the circular groove.