CN201158972Y

CN201158972Y - Overload safeguard of clutch for lock

Info

Publication number: CN201158972Y
Application number: CNU2007201788455U
Authority: CN
Inventors: 曹湛斌; 周向阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-28
Filing date: 2007-12-28
Publication date: 2008-12-03
Anticipated expiration: 2017-12-28

Abstract

The utility model discloses an overloading protecting equipment of a clutch used for a lock, which comprises a lock shell 8, a clutch which is used for a lock and is installed in the lock shell 8, the clutch used for a lock comprises a clutch outer ring 1 and a clutch inner ring 2, wherein a locating block 6 is arranged on the upper portion of the inner ring 2 of the clutch, and a clutching and locking device which is matched with the clutch locating block 6 and is used for correspondingly locking the rotational angle of the clutch inner ring 2 is arranged on the lock shell 8. The overloading protecting equipment adopts the match between the locating block 6 and the clutching and locking device to lock the range of the rotation angle of the clutch inner ring 2, thereby the defects that the clutch is overloading due to the over-strong force of rotating the handle, so that the clutch outer ring 1 can not correspondingly rotate to the clutch inner ring 2, the function of the clutch ceases to be in force, so that the handle of the lock can be opened all the time are avoided, thereby the service life of the clutch is increased. The overloading protecting equipment can be suitable for various clutches used for locks.

Description

The overload protection arrangement of lock clutch

Technical field

The utility model relates to a kind of lock clutch, relates in particular to a kind of overload protection arrangement of lock clutch.

Background technology

At present, general door lock all is provided with the clutch that cooperates with door handle, as Chinese patent application number 01227336.8, the day for announcing is on May 1st, 2002, name is called the patent of " clutch of lock ", the clutch that this application case discloses a kind of lock comprises front axle and rear axle, and rear axle housing also comprises playing post, spring and fore-set on front axle but both separation can not interlock; Front axle is provided with a front axle aperture, plays the post activity and is contained in the front axle aperture, between the bottom of bullet post and front axle aperture spring is housed; Position corresponding to the front axle aperture on the rear axle is provided with a rear axle aperture, being contained in the rear axle aperture of fore-set activity.Utilize the front axle post of being hit by a bullet to insert or do not insert in the rear axle, realize the interlock of front axle and rear axle or interlock not, thus realized lock close and from operation.There is following defective in this clutch: when unblanking, the dynamics of pressure handle hand is excessive, this power all concentrates on and plays in the cooperating of post and clutch front axle aperture and rear axle aperture, easily cause the distortion of place, position, hole, the material of the butt joint of clutch front axle aperture and rear axle aperture to protrude, clutch front axle and rear axle can not relatively rotate, cause the clutch disabler, thereby the lock handle hand can be opened the door all the time.

The utility model content

At the prior art deficiency, the utility model spy proposes a kind of above-mentioned overload protection arrangement that causes the lock clutch of clutch disabler phenomenon appearance that effectively prevents.

For achieving the above object, the utility model is taked following technical scheme:

The overload protection arrangement of lock clutch comprises lock housing 8, and is installed in the lock clutch in the lock housing 8; Described lock clutch comprises clutch outer ring 1 and clutch inner ring 2; On described clutch inner ring 2 tops clutch locating piece 6 is set, the clutch stopping means of the anglec of rotation of the described clutch inner ring 2 of corresponding qualification that matches with described clutch locating piece 6 is set on described lock housing 8.

Described clutch inner ring 2 tops refer to position, the square iron hole opening end pointed that mounting knob is used on it.Locate to separate state when between clutch outer ring 1 and the clutch inner ring 2, be that clutch inner ring 2 is idling conditions at this moment, described clutch locating piece 6 matches with the clutch stopping means and limits the anglec of rotation of clutch inner ring 2, promptly limit the anglec of rotation of the lock handle hand of the position, square iron hole that is installed on the clutch inner ring 2, avoided handle to increase the wearing and tearing of position, square iron hole and handle because of long idle running.Be engagement state this moment between clutch outer ring 1 and clutch inner ring 2, and promptly rotating handles can be unblanked under this state.At this moment, the power that is applied to handle is passed on the clutch inner ring 2, because adopting clutch locating piece 6 to match with the clutch stopping means is limited in clutch inner ring 2 anglecs of rotation in the angular range of unblanking to need to rotate, make progress thereby reduced in the footpath of clutch, because of rotating handles firmly excessive, cause the clutch overload, its disabler, the phenomenon that the lock handle hand can be opened the door all the time occurs.

The utility model can also be that described clutch stopping means is the suitable stopper slot 7 of the anglec of rotation with described clutch inner ring 2 that is arranged on the described lock housing 8; The top of described clutch locating piece 6 is stretched in the described stopper slot 7, and the anglec of rotation by the described clutch inner ring 2 of described stopper slot 7 respective limits.Cooperatively interact by the stopper slot 7 on clutch locating piece 6 and the lock housing 8, the anglec of rotation of clutch inner ring 2 can be limited in the angle of unblanking, avoid clutch overload in the process of unblanking.

The utility model can also be, described stopper slot 7 is set to and suitable fan-shaped of the rotating distance of described clutch locating piece 6.Because described clutch locating piece 6 rotates along with the rotation of clutch inner ring 2, the travel path of described clutch locating piece 6 is fan-shaped with clutch inner ring 2 concentrics, describedly be fan-shaped stopper slot 7 and clutch locating piece 6 anglec of rotation of incompatible restriction clutch inner ring 2 that matches, thereby avoid clutch overload in the process of unblanking.

The utility model can also be, described clutch stopping means is the protrusion piece 5 that is arranged on the inner surface of described lock housing 8, and described protrusion piece 5 is positioned at the starting point of rotating distance of described clutch locating piece 6 or/and terminal point.The inner surface of described lock housing 8 is meant and the corresponding surface of described clutch that is contained in lock housing 8 inside.Cooperatively interact with described protrusion piece 5 with the clutch locating piece 6 on described clutch inner ring 2 tops and to limit the anglec of rotation of clutch inner ring 2, promptly limit the anglec of rotation of lock handle hand.

Compared with prior art, the beneficial effects of the utility model are: when unblanking, the power that is applied to handle is passed on the clutch inner ring 2, since adopt clutch locating piece 6 and clutch stopping means engagement limits the scope of clutch inner ring 2 anglecs of rotation, thereby avoided firmly excessive, made clutch overload and the clutch outer ring 1 of causing and clutch inner ring 2 can't rotate relatively, the clutch disabler can be opened the door the lock handle hand all the time drawback because of rotating handles; And then increased application life of clutch.

Owing to the utlity model has above-mentioned advantage, so can be widely used in all kinds of lock clutch.

Description of drawings

Fig. 1 is the decomposing schematic representation of the overload protection arrangement of lock clutch among the utility model embodiment one;

Fig. 2 is that the fan-shaped stopper slot 7 on the lock housing 8 cooperates figure with the assembling of clutch locating piece 6 among the utility model embodiment one;

Fig. 3 is the assembly drawing of lock clutch among the utility model embodiment one;

Fig. 4 is that the A-A of the utility model Fig. 3 is to sectional view;

Fig. 5 is that two the angled limited blocks 5 on lock housing 8 inner surfaces cooperate figure with the assembling of clutch locating piece 6 among the utility model embodiment two.

The specific embodiment

Below in conjunction with accompanying drawing, further specify the specific embodiment of the present utility model:

Embodiment one:

As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the overload protection arrangement of lock clutch comprises lock housing 8, and is installed in the lock clutch in the lock housing 8; Described lock clutch comprises clutch outer ring 1, clutch inner ring 2; On described clutch inner ring 2 tops clutch locating piece 6 is set, the clutch stopping means of the anglec of rotation of the described clutch inner ring 2 of corresponding qualification that matches with described clutch locating piece 6 is set on described lock housing 8.Described clutch stopping means is the suitable stopper slot 7 of the anglec of rotation with described clutch inner ring 2 that is arranged on the described lock housing 8; The top of described clutch locating piece 6 is stretched in the described stopper slot 7, and the anglec of rotation by the described clutch inner ring 2 of described stopper slot 7 respective limits.Described stopper slot 7 is and suitable fan-shaped of the rotating distance of described clutch locating piece 6 that promptly its fan-shaped angle is identical with the anglec of rotation of unblanking.

Lock clutch also comprises on-of pin elastic parts 3, and described clutch inner ring 2 inserts in the centre bore 10 of described clutch outer ring 1 slidably; On-of pin elastic parts 3 comprises clutch pad 31, clutch set bar 32 and clutch interlock spring 33; In described clutch outer ring 1 pin-and-hole 11 outside the clutch is set radially, clutch pad 31 is contained in the outer pin-and-hole 11 of clutch movably; Described clutch inner ring 2 radially be provided with described clutch outside the coaxial clutch inner pinhole 21 of pin-and-hole 11, clutch set bar 32 and clutch interlock spring 33 are contained in the described clutch inner pinhole 21 movably; Clutch inner ring 2 is provided with the position, square iron hole 4 of mounting knob.Wherein, as shown in Figure 1 and Figure 4, above-mentioned be arranged on that the outer pin-and-hole 11 of clutch that footpath, clutch outer ring 1 makes progress can be " U " shape groove and on clutch outer ring 1 outer wall of " U " shape slot tail correspondence, with the combination of the coaxial through hole formation of " U " shape groove.

When clutch pad 31 is depressed, be that on-of pin elastic parts 3 is depressed, locate to separate state between clutch outer ring 1 and the clutch inner ring 2, clutch inner ring 2 is an idling conditions at this moment, the handle rotation angle range that is installed in the position, square iron hole 4 on the clutch inner ring 2 is limited in the fan-shaped angle of fan-shaped stopper slot 7, avoid the long idle running of handle, increase the wearing and tearing of position 4, square iron hole and handle.Pressure on clutch pad 31 disappears, and under the elastic force effect of clutch interlock spring 33, clutch pad 31 is upspring, and promptly on-of pin elastic parts 3 is upspring, and clutch export trade 1 is an engagement state with clutch inner ring 2 at this moment, and promptly rotating handles can be unblanked.At this moment, the power that is applied to handle is passed on the clutch inner ring 2, owing to adopt clutch locating piece 6 and cooperating of fan-shaped stopper slot 7 that clutch inner ring 2 anglecs of rotation are limited in the angular range of the needs rotation of unblanking, make progress thereby reduced in the footpath of clutch, because of rotating handles firmly excessive, it is excessive to be that sidewall that clutch inner ring 2 drives the outer pin-and-hole 11 of 3 pairs of clutches of on-of pin elastic parts of clutches and clutch inner pinhole 21 produces pressure, and the distortion of place, apertures, the phenomenon that material protrudes of butt joint occur mutually to cause outer pin-and-hole 11 of described clutch and clutch inner pinhole 21; Clutch outer ring 1 of causing therefrom and the drawback that clutch inner ring 2 can't rotate relatively, the clutch disabler can be opened the door the lock handle hand have all the time been avoided; And then increased application life of clutch.

Embodiment two:

As shown in Figure 5, the difference with embodiment one is: described clutch stopping means is to be arranged on the inner surface of described lock housing 8 two to protrude 5, two of pieces and protrude starting point and the terminal point that piece 5 lays respectively at the rotating distance of described clutch locating piece 6.

When the on-of pin elastic parts is depressed, locate to separate state between clutch outer ring 1 and the clutch inner ring 2, clutch inner ring 2 is an idling conditions at this moment, the handle rotation angle range that is installed in the position, square iron hole 4 on the clutch inner ring 2 is limited in two and protrudes between the piece 5, avoid the long idle running of handle, increase the wearing and tearing of position 4, square iron hole and handle.When on-of pin elastic parts 3 is upspring, 2 this moments of clutch inner ring are engagement state, and promptly rotating handles can be unblanked.At this moment, the power that is applied to handle is passed on the clutch inner ring 2, owing to adopt clutch locating piece 6 and cooperating of two protrusion pieces 5 that clutch inner ring 2 anglecs of rotation are limited in the angular range of the needs rotation of unblanking, make progress thereby reduced in the footpath of clutch, because of rotating handles firmly excessive, it is excessive to be that sidewall that clutch inner ring 2 drives the outer pin-and-hole 11 of 3 pairs of clutches of on-of pin elastic parts of clutches and clutch inner pinhole 21 produces pressure, and the distortion of place, apertures, the phenomenon that material protrudes of butt joint occur mutually to cause outer pin-and-hole 11 of described clutch and clutch inner pinhole 21; Clutch outer ring 1 of causing therefrom and the drawback that clutch inner ring 2 can't rotate relatively, the clutch disabler can be opened the door the lock handle hand have all the time been avoided; And then increased application life of clutch.

Claims

1. the overload protection arrangement of lock clutch comprises lock housing (8), and is installed in the lock clutch in the lock housing (8); Described lock clutch comprises clutch outer ring (1) and clutch inner ring (2); It is characterized in that: on described clutch inner ring (2) top clutch locating piece (6) is set, goes up the clutch stopping means of the anglec of rotation that the described clutch inner ring of corresponding qualification (2) that matches with described clutch locating piece (6) is set in described lock housing (8).

2. the overload protection arrangement of lock clutch according to claim 1 is characterized in that: described clutch stopping means is for being arranged on the suitable stopper slot (7) of the anglec of rotation with described clutch inner ring (2) on the described lock housing (8); The top of described clutch locating piece (6) is stretched in the described stopper slot (7), and the anglec of rotation by described stopper slot (7) the described clutch inner ring of respective limits (2).

3. the overload protection arrangement of lock clutch according to claim 2 is characterized in that: described stopper slot (7) is set to and suitable fan-shaped of the rotating distance of described clutch locating piece (6).

4. the overload protection arrangement of lock clutch according to claim 1; it is characterized in that: described clutch stopping means is for being arranged on the protrusion piece (5) on the inner surface of described lock housing (8), and described protrusion piece (5) is positioned at the starting point of rotating distance of described clutch locating piece (6) or/and terminal point.