CN108301690B

CN108301690B - Door lock and door with same

Info

Publication number: CN108301690B
Application number: CN201810286844.5A
Authority: CN
Inventors: 闵浩; 朱昱旻; 钱考锦
Original assignee: Dongwu Shian Iot Technology Jiangsu Co ltd
Current assignee: Dongwu Shian Iot Technology Jiangsu Co ltd
Priority date: 2018-03-30
Filing date: 2018-03-30
Publication date: 2024-04-09
Anticipated expiration: 2038-03-30
Also published as: CN108301690A

Abstract

The invention relates to a cat eye prevention device, a door lock and a door with the door lock, wherein the cat eye prevention device comprises a knob, a transmission mechanism, a transmission seat and a cam, wherein the transmission seat is connected with an input shaft of the knob; the clutch mechanism comprises a clutch shifting fork, a clutch pin assembly and a clutch assembly, wherein the clutch pin assembly comprises a clutch pin and a first elastic piece arranged on the clutch pin, and an abutting piece capable of abutting against the cam is arranged on the clutch shifting fork and away from the clutch pin end. Above-mentioned prevent cat eye device through increasing knob, drive mechanism and the clutch of independent design, not only can increase the disguise of preventing cat eye knob, still can increase the theftproof nature of preventing cat eye device, improves lock security, and overall structure design is simple, convenient operation, and the suitability is strong.

Description

Door lock and door with same

Technical Field

The invention relates to the technical field of lock devices, in particular to a door lock and a door with the same.

Background

At present, the burglary-resisting door is provided with a peep hole, and some lawbreakers can open the door lock by damaging the peep hole, stretching into the room through the peep hole and lifting or pressing the handle by using a special tool so as to enter the room for theft.

The peep of the peep hole is prevented by adding the anti-lock button in the prior art, but the door cannot be opened outside the door after being locked, so that a plurality of inconveniences are brought to the use. In the prior art, the anti-peep button is added on the inner handle to realize the anti-peep function, so that the door is opened indoors when the anti-peep button is pressed, the indoor door opening is caused to be complicated, and the attractiveness of the door lock is also influenced by the arranged buttons. In addition, the anti-cat eye button is directly exposed on the inner handle, the anti-cat eye capability is limited, and lawbreakers can easily find out holes to unlock the door lock and insert the door for theft; in addition, the existing cat eye-preventing button has single function and can not meet the requirements of different application scenes.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a door lock and a door having the same.

A cat eye prevention device, the cat eye prevention device comprising:

a knob;

the transmission mechanism comprises a transmission seat connected with the input shaft of the knob and a cam arranged on the transmission seat;

the clutch mechanism comprises a clutch shifting fork, a clutch pin assembly and a clutch assembly, wherein the clutch pin assembly comprises a clutch pin and a first elastic piece arranged on the clutch pin, and an abutting piece capable of abutting against the cam is arranged on the clutch shifting fork far away from the clutch pin end;

the clutch fork has a first position in which one end of the clutch fork can push the clutch pin into a clutch slot inserted into the clutch assembly so that the clutch assembly is in a closed state; the cam follows the transmission seat to rotate to be abutted on the abutting piece, and then the clutch shifting fork is driven to move to a second position in the direction away from the clutch pin, and the clutch pin is separated from the clutch groove under the action of the first elastic piece, so that the clutch assembly is in a separated state.

Above-mentioned cat eye device is prevented through increasing knob, drive mechanism and the clutch mechanism of individual design, follows the knob through the cam and rotates and can offset with the separation and reunion shift fork, and then promotes the separation and reunion shift fork, reduces clutch pin force, thereby the clutch pin breaks away from the clutch groove and makes the clutch assembly be in the state from, realizes preventing cat eye function. Not only can the concealment of the cat eye preventing knob be increased, but also the antitheft of the cat eye preventing device can be increased, the safety of the door lock is improved, the whole structural design is simple, the operation is convenient, and the applicability is strong.

In one embodiment, the transmission mechanism further comprises a first gear, and the first gear and the cam are stacked and staggered on the transmission seat.

In one embodiment, the cat eye preventing device further comprises a fixing seat and a limiting plate arranged on the fixing seat, a first limiting boss is arranged on the transmission seat, and the limiting plate is provided with a first limiting boss used for restraining the first limiting boss so as to restrain the rotation angle of the transmission seat.

The present invention also provides a door lock comprising an inner panel comprising:

a housing;

an inner handle arranged outside the shell and connected with the lock body to realize door opening,

the cat eye preventing device is arranged in the shell and is connected with the inner handle;

wherein, prevent cat eye device includes:

the knob is arranged outside the shell;

the clutch mechanism comprises a clutch shifting fork, a clutch pin assembly and a clutch assembly connected with the inner handle, the clutch pin assembly comprises a clutch pin and a first elastic piece arranged on the clutch pin, and an abutting piece capable of abutting against the cam is arranged on the clutch shifting fork far away from the clutch pin end;

Above-mentioned lock through increasing knob, drive mechanism and the clutch mechanism of individual design, follows the knob through the cam and rotates and can offset with the separation and reunion shift fork, and then promotes the separation and reunion shift fork, reduces the clutch pin power, thereby the clutch pin breaks away from the clutch groove and makes the clutch assembly be in the state of leaving, realizes preventing cat eye function. Not only can the concealment of the cat eye preventing knob be increased, but also the antitheft of the cat eye preventing device can be increased, the safety of the door lock is improved, the whole structural design is simple, the operation is convenient, and the applicability is strong.

In one embodiment, the door lock further comprises an outer panel and/or a lock body.

In one embodiment, the transmission mechanism further comprises a first gear, the first gear and the cam are stacked and staggered on the transmission seat, the door lock further comprises a first lock transmission mechanism connected with the anti-lock tongue, and the first lock transmission mechanism is at least partially meshed with the first gear.

In one embodiment, the first lock transmission mechanism comprises a second gear meshed with the first gear and a third gear linked with the second gear, and the first gear transmits power to the third gear through the second gear so as to control the anti-lock tongue to realize locking or unlocking.

In one embodiment, the first lock transmission mechanism further comprises a link mechanism, and two ends of the link mechanism are respectively connected with the second gear and the third gear and used for transmitting the power of the second gear to the third gear.

In one embodiment, the first lock transmission mechanism further comprises a fourth gear connected with the anti-lock tongue, the fourth gear and the third gear are meshed with each other, the third gear is provided with a gear groove through transmitting the power of the third gear to the fourth gear to rotate, and the gear groove is used for limiting the movement range of the fourth gear.

In one embodiment, the number of teeth of the first gear is half the number of teeth of the second gear, and the number of teeth of the third gear is twice the number of teeth of the fourth gear.

In one embodiment, the second gear is of an intermittent gear structure, the gear groove is an arc waist groove, and the rotation angle of the second gear is not smaller than the arc included angle of the gear groove.

In one embodiment, the limiting piece is of an annular structure and can be sleeved on the transmission seat, the first limiting protrusion is arranged on the inner ring of the limiting piece, and the first limiting boss and the cam are not on the same plane.

In one embodiment, at least a first groove and a second groove are formed in the outer ring of the limiting piece, and a second limiting piece and a third limiting piece which are used for limiting the first groove and the second groove respectively are arranged on the fixing seat; or (b)

The outer ring of the limiting piece is provided with a first groove, a second groove and a third groove, the first groove is an arc groove, the arc groove is provided with a first limiting point and a second limiting point, the fixing seat is provided with a second limiting piece used for limiting the first groove, the fixing seat is provided with an elastic limiting piece used for limiting the second groove or the third groove, and the limiting piece is detachably arranged on the fixing seat through the elastic limiting piece.

In one embodiment, the first restriction point and the second groove are symmetrically disposed with respect to the second restriction point and the third groove, respectively.

In one embodiment, the abutment comprises a bearing or pulley; the clutch assembly comprises a first clutch piece and a second clutch piece, and the clutch pin is inserted into or separated from the clutch groove to realize the linkage or separation of the first clutch piece and the second clutch piece;

the shell comprises a bottom shell and a mask detachably connected with the bottom shell, and the bottom shell and the mask form a containing cavity.

The invention also provides a door comprising the door lock.

Drawings

FIG. 1 is a schematic view of a door lock according to the present invention;

FIG. 2 is a schematic view of a portion of the first mode of the inner panel of the present invention;

FIG. 3 is a schematic view of a transmission mechanism of the present invention in one direction;

FIG. 4 is a schematic view of another direction of the transmission mechanism of the present invention;

FIG. 5 is a schematic view of a clutch fork according to the present invention;

FIG. 6 is a schematic view of a limiting plate according to the present invention;

FIG. 7 is a schematic view of a third gear according to the present invention;

FIG. 8 is a partial schematic view of a second mode of the inner panel of the present invention;

FIG. 9 is a schematic view of a portion of the structure of a third mode of the inner panel of the present invention;

fig. 10a-10c are schematic illustrations of the structure of the three modes of transmission mechanism of the door lock of the present invention after the handle is changed.

Reference numerals:

1. an inner panel, 2, a lock body, 3 and an outer panel;

110. the inner handle, 120, the knob, 130, the transmission mechanism, 131, the transmission seat, 132, the cam, 133, the first gear, 134, the first limit boss, 135 and the position sensing surface;

140. the clutch mechanism comprises a clutch mechanism, 141, a clutch fork, 1411, an abutting piece, 1412, a limit groove, 1413, an opening, 142, a clutch pin, 143, a first elastic piece, 144, a clutch wheel, 145, a driving wheel, 146, a fork limit post, 147 and a second elastic piece;

150. a limiting piece 151, a first limiting protrusion 152, a first groove 153, a second groove 154 and a third groove;

160. the elastic limiting piece, 170, the second limiting piece, 181, the second gear, 182, the third gear, 1821, the gear groove, 183, the fourth gear, 184, the first connecting rod, 185, the clamp spring, 186, the connecting rod column, 187 and the connecting rod positioning hole.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, a door lock includes an inner panel 1, a lock body 2, and an outer panel 3. The inner panel 1 includes a housing, an inner handle 110, and a cat eye prevention device. The inner handle 110 is disposed outside the housing and connected to the lock body 2 to enable door opening. The anti-cat eye device is disposed in the housing and connected with the inner handle 110 to realize the anti-cat eye function.

The anti-cat eye device comprises a knob 120, a transmission mechanism 130, and a clutch mechanism 140.

The knob 120 is disposed outside the housing, and may be a shift knob, and the shift knob may be provided with marks such as arrows, and the housing is provided with patterns corresponding to different modes, and the position indicated by the arrows may be adjusted by rotating the shift knob, so as to implement different functions according to the selected mode. Such as a cat eye prevention function or an unlocking function or a locking function.

As shown in fig. 3 and 4, the transmission mechanism 130 includes a transmission housing 131 connected to the input shaft of the knob 120 and a cam 132 provided on the transmission housing 131. One end of the transmission seat 131 is connected with the knob 120 through a square shaft, the other end of the transmission seat 131 can penetrate through a through hole of a fixed seat (not shown), and the transmission seat 131 can rotate along with the knob 120 so as to drive a cam 132 on the transmission seat 131 to rotate. In one embodiment, the cam 132 may be fixedly mounted or removably mounted on the transmission housing 131. The cam 132 and the transmission seat 131 may be made of polymer materials, and may be integrally formed. Of course, the two materials can be other materials, and can be assembled after being respectively processed and molded.

The clutch mechanism 140 includes a clutch fork 141, a clutch pin assembly, and a clutch assembly connected with the inner handle 110. The clutch pin assembly comprises a clutch pin 142 and a first elastic piece 143 arranged on the clutch pin 142, an abutting piece 1411 capable of abutting against the cam 132 is arranged at the end, far away from the clutch pin 142, of the clutch fork 141, and a clutch groove for inserting the clutch pin 142 is formed in the clutch assembly.

The clutch fork 141 has a first position in which one end of the clutch fork 141 can push the clutch pin 142 into a clutch groove inserted into the clutch assembly so that the clutch assembly is in a closed state, and a second position. The cam 132 rotates along with the transmission seat to abut against the abutting piece 1411, so as to drive the clutch shifting fork 141 to move to the second position in the direction away from the clutch pin 142, and the clutch pin 142 is separated from the clutch groove under the action of the first elastic piece 143, so that the clutch assembly is in a separated state.

In one embodiment, as shown in fig. 5, the end of the clutch fork 141 near the clutch assembly has an arc structure, and the arc structure can be matched with the clutch assembly, so that the end of the clutch fork 141 can prop against the clutch assembly; the clutch fork 141 is connected to the second elastic member 147 at an end thereof remote from the clutch assembly. The abutment 1411 is disposed on the clutch fork 141 at an end remote from the clutch assembly, and the abutment 1411 should be of a rigid material that can push and pull the clutch fork 141 to the second position under the urging of the projection of the cam 132. Preferably, the abutment 1411 is a rigid rotating member, such as a bearing or pulley, and in this embodiment, the abutment 1411 is a bearing. The protruding part of the cam 132 rotates and applies a force to the abutting piece 1411, the rigid rotating piece rotates under the force, and friction between the rigid rotating piece and the cam 132 is rolling friction, so that abrasion to the contact part of the cam 132 and the abutting piece 1411 can be reduced, and the service life of the door lock is prolonged.

The clutch fork 141 is provided with an opening 1413 through which the transmission seat 131 partially passes, and the inner wall of the opening 1413 is provided with an inner positioning surface matched with the transmission seat 131. The clutch mechanism 140 further includes a shift fork limiting post 146 fixedly disposed, a limiting groove 1412 for accommodating the shift fork limiting post 146 is disposed on the clutch shift fork 141, and the limiting groove 1412 is provided with a first shift fork limiting point and a second shift fork limiting point in the movement direction of the clutch pin 142. When the clutch fork 141 moves, the limiting groove 1412 moves relative to the fork limiting post 146, and after the fork limiting post 146 reaches the first fork limiting point and the second fork limiting point in the limiting groove 1412, the clutch fork 141 stops moving continuously, and at this time, the clutch fork 141 can be located at the first position and the second position respectively.

In an embodiment, the first elastic member 143 may be a compression spring, and the clutch pin 142 is ejected outwards to disengage the clutch slot when the pushing force of the clutch fork 141 becomes smaller under the elastic force of the compression spring. Similarly, the second elastic member 147 may be a compression spring, and one end of the second elastic member 147 is fixed and the other end is connected to the clutch fork 141. When the clutch fork 141 is not abutted by the cam 132, the clutch fork 141 can be reset by the force of the second elastic member 147.

The clutch assembly includes a first clutch member and a second clutch member, and the clutch pin 142 is inserted into or removed from the clutch slot to achieve the coupling or decoupling of the first clutch member and the second clutch member. In the present embodiment, as shown in fig. 2, the first clutch member is a clutch wheel 144, and the second clutch member is a driving wheel 145 nested with the clutch wheel 144. The drive wheel 145 may be of an incomplete gear configuration. The clutch wheel 144 is connected to the input shaft of the inner handle 110, and the driving wheel 145 is engaged with a driving wheel (not shown) of the lock body 2.

When the clutch pin 142 is inserted into the clutch slot, the clutch assembly is in a closed state, and at the moment, the clutch wheel 144 is linked with the driving wheel 145, and when the inner handle 110 is rotated, the clutch wheel 144 rotates under the action of the inner handle 110, so as to drive the driving wheel 145 to rotate, and further drive the transmission wheel of the lock body 2 to rotate, thereby unlocking the door. When the knob 120 is manually adjusted, and the transmission seat 131 is driven to rotate, the cam 132 follows the rotation of the transmission seat 131, the cam 132 is abutted on the abutting piece 1411, the abutting piece 1411 pushes the clutch fork 141 to move downwards, the constraint of the clutch fork 141 on the clutch pin 142 is released, the clutch pin 142 moves towards the direction of disengaging from the clutch groove under the action of the first elastic piece 143, the clutch assembly is in a disengaged state, at this moment, the clutch wheel 144 is not linked with the driving wheel 145, the driving wheel 145 cannot rotate along with the clutch wheel 144, when the inner handle 110 is rotated, the clutch wheel 144 idles under the action of the inner handle 110, and the door cannot be unlocked, so that the cat eye preventing function is realized.

With continued reference to fig. 3 and 4, the transmission 130 further includes a first gear 133, and the first gear 133 and the cam 132 are stacked and offset on the transmission housing 131. The cam 132, the transmission seat 131 and the first gear 133 may be made of polymer materials, and the three may be integrally formed. Of course, the three materials can be other materials, and can be assembled after being respectively processed and molded.

The door lock further includes a first lock gear 130 connected to the reverse latch, the first lock gear 130 including a second gear 181 engaged with the first gear 133 and a third gear 182 coupled to the second gear 181, the first gear 133 transmitting power to the third gear 182 through the second gear 181, thereby controlling the reverse latch to be locked or unlocked.

So, through increasing first gear 133 on drive seat 131, first gear 133 accessible gear drive realizes the back-lock for prevent cat eye device not only possess and prevent cat eye function, have the back-lock function concurrently, not only can increase the disguise of preventing cat eye knob 120, provide multiple guarantee for improving the theftproof nature moreover, in addition with multi-functional collection to a knob 120 on, the customer can carry out mode adjustment as required, and design is succinct more pleasing to the eye, and the suitability is strong.

In an embodiment, as shown in fig. 2 and 7, the first lock transmission mechanism 130 further includes a link 184 mechanism, and both ends of the link 184 mechanism are connected to the second gear 181 and the third gear 182, respectively, for transmitting the power of the second gear 181 to the third gear 182. In the present embodiment, the link mechanism includes a first link 184 and link columns 186 provided at both ends of the first link 184. The second gear 181 and the third gear 182 are provided with a first connecting rod 184 positioning hole for a connecting rod column 186 to pass through, and the connecting rod column 186 is fixedly connected with the second gear 181 and the third gear 182 respectively through a clamp spring 185. Through increasing link mechanism, can place the anti-lock tongue and keep away from knob 120 end on the lock for knob 120 and anti-lock tongue are not on the same axis, prevent violent prizing the lock, increase the theftproof nature.

In an embodiment, the first lock transmission mechanism 130 further includes a fourth gear 183 connected to the anti-lock tongue, the fourth gear 183 is engaged with the third gear 182, the third gear 182 is provided with a gear groove 1821 by transmitting the power of the third gear 182 to the fourth gear 183 to rotate, and the gear groove 1821 is used for limiting the movement range of the fourth gear 183.

In an embodiment, the second gear 181 has an intermittent gear structure, the gear groove 1821 is an arc waist groove, and the rotation angle of the second gear 181 is not smaller than the arc included angle of the gear groove 1821. Because the movement stroke of the anti-lock tongue is limited, the movement stroke of the anti-lock tongue is controlled by controlling the rotation angle of the second gear 181 and the arc included angle of the gear groove 1821, and further controlling the rotation stroke of the fourth gear 183.

In one embodiment, the number of teeth of the first gear 133 is half the number of teeth of the second gear 181, and the number of teeth of the third gear 182 is twice the number of teeth of the fourth gear 183. By the design of the number of the teeth of the gears, good gear transmission and stroke control can be realized.

In an embodiment, the cat eye preventing device further includes a fixing base and a limiting plate 150 disposed on the fixing base, the driving base 131 is provided with a first limiting boss 134, and the limiting plate 150 is provided with a first limiting boss 151 for constraining the first limiting boss 134, so as to further constrain a rotation angle of the driving base 131.

In an embodiment, the limiting plate 150 has an annular structure and can be sleeved on the transmission seat 131, the first limiting protrusion 151 is disposed on an inner ring of the limiting plate 150, and the first limiting boss 134 and the cam 132 are not on the same plane. The first limiting boss 134 is stacked with the cam 132 and the first gear 133 and is staggered on the transmission seat 131. The cam 132, the transmission seat 131, the first gear 133 and the first limiting boss 134 may be made of a polymer material, and the four may be integrally formed. Of course, the four materials can be other materials, and can be assembled after being respectively processed and molded.

In one embodiment, as shown in fig. 6, the outer ring of the limiting plate 150 is provided with a first groove 152, a second groove 153 and a third groove 154. The first groove 152 is an arc-shaped groove, the arc-shaped groove is provided with a first limiting point and a second limiting point, the fixing seat is provided with a second limiting piece 170 used for limiting the first groove 152, the fixing seat is provided with an elastic limiting piece 160 used for limiting the second groove 153 or the third groove 154, and the limiting piece 150 is detachably arranged on the fixing seat through the elastic limiting piece 160. The elastic stopper 160 is a positioning marble, and the second groove 153 and the third groove 154 may be dot grooves matching the positioning marble. Preferably, the limiting plate 150 is a symmetrical limiting plate 150, and the first limiting point and the second groove 153 are symmetrically disposed with the second limiting point and the third groove 154 respectively. At this time, the first groove 152 and the first limiting protrusion 151 may be located at the same side, which is convenient for installation.

Since the plurality of grooves with different opening 1413 directions are added on the limit plate 150, the position of the limit plate 150 can be adjusted according to the unlocking direction of the door, thereby realizing bidirectional door opening and increasing the applicability of the door lock. When the door lock is left or right opened, the second limiting piece 170 on the fixed seat can correspond to the first limiting point or the second limiting point, the elastic limiting piece 160 can correspond to the second groove 153 or the third groove 154, and as the position of the first limiting protrusion 151 on the inner side of the limiting piece 150 is fixed, the limiting piece 150 is detached from the fixed seat through the elastic limiting piece 160, and the position of the first limiting protrusion 151 is changed by adjusting and fixing the position of the limiting piece 150, so that the switching of the two-way door opening can be realized.

Of course, in another embodiment, for simplicity and customization according to the door lock direction, the limiting piece 150 may only implement one-way door opening, at least the first slot 152 and the second slot 153 are provided on the outer ring of the limiting piece 150, and the second limiting piece 170 and the third limiting piece for limiting the first slot 152 and the second slot 153 are provided on the fixing base.

In an embodiment, in order to increase the rotation shift feel of the knob 120, a position sensing surface 135 may be added to the transmission seat 131, where the position sensing surface 135 is disposed near the end of the knob 120.

In one embodiment, the housing includes a bottom shell and a face mask removably coupled to the bottom shell, the bottom shell and the face mask defining a receiving cavity. Because the face guard can be simply dismantled, the face guard can be designed with different colours and patterns, so that customers can change the face guard with different colours and patterns according to the demands, and the aesthetic property and the experience of the door lock are improved.

It should be noted that, the structure and the connection relationship between the outer panel 3 and the lock body 2 in the door lock may be conventional design in the art, and will not be described herein.

The various modes of the door lock are described in detail below with reference to the accompanying drawings:

as shown in fig. 2, the cam 132 is in an initial state, when the clutch assembly is in a closed state, door opening can be achieved by rotating the inner handle 110, when the knob 120 on the rear panel is in a first mode, i.e., an unlocked state. When the knob 120 is rotated counterclockwise, as shown in fig. 8, the transmission seat 131 rotates along with the inner handle 110, and drives the first gear 133 to rotate counterclockwise, the first gear 133 drives the second gear 181 to rotate clockwise reversely, and drives the link 184 mechanism to move, so as to drive the third gear 182 to move clockwise, and the third gear 182 drives the fourth gear 183 to rotate counterclockwise, and further drives the anti-lock tongue to move, so as to realize anti-lock, and at this time, the knob 120 on the rear panel is in the second mode, i.e. the anti-lock state. Continuing to rotate the knob 120 anticlockwise, as shown in fig. 9, the transmission seat 131 rotates along with the inner handle 110, and then drives the cam 132 to rotate anticlockwise, the cam 132 moves to be abutted with the abutting piece 1411 to push the clutch fork 141, the clutch fork 141 reduces the constraint force on the clutch pin 142, the clutch pin 142 is separated from the clutch groove under the action of the first elastic piece 143, the clutch assembly is in a separated state at this time, the inner handle 110 fails, at this time, the door cannot be opened due to idling of the inner handle 110, and at this time, the knob 120 on the rear panel is in a third mode, namely, a cat eye prevention state.

If the direction of opening of the door is reversed, the position-limiting piece 150 is removed and adjusted, so that the direction of the knob 120 is adjusted, and then the knob 120 is rotated clockwise, as shown in fig. 10a to 10c, so that various states similar to the above-mentioned counterclockwise rotation of the knob 120 can be achieved.

The invention also provides a door comprising any one of the cat eye prevention devices or the door lock.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A door lock comprising an inner panel, wherein the inner panel comprises:

a housing;

wherein, prevent cat eye device includes:

the knob is arranged outside the shell;

the clutch fork has a first position in which one end of the clutch fork can push the clutch pin into a clutch slot inserted into the clutch assembly so that the clutch assembly is in a closed state; the cam rotates along with the transmission seat to be abutted against the abutting piece, so that the clutch shifting fork is driven to move to a second position in the direction away from the clutch pin, and the clutch pin is separated from the clutch groove under the action of the first elastic piece, so that the clutch assembly is in a separated state;

the transmission mechanism also comprises a first gear, the first gear and the cam are stacked and staggered on the transmission seat, the door lock also comprises a first lock transmission mechanism connected with the anti-lock tongue, the first lock transmission mechanism is at least partially meshed with the first gear,

the first lock transmission mechanism comprises a second gear meshed with the first gear and a third gear linked with the second gear, and the first gear transmits power to the third gear through the second gear so as to control the anti-lock tongue to lock or unlock;

the cat eye prevention device further comprises a fixing seat and a limiting plate arranged on the fixing seat, a first limiting boss is arranged on the transmission seat, and the limiting plate is provided with a first limiting boss used for restraining the first limiting boss so as to restrain the rotation angle of the transmission seat.

2. The door lock according to claim 1, wherein the first lock gear further comprises a link mechanism, both ends of the link mechanism are respectively connected with the second gear and the third gear, for transmitting power of the second gear to the third gear.

3. The door lock according to claim 1, wherein the first lock transmission mechanism further comprises a fourth gear connected to the counter latch, the fourth gear and the third gear are engaged with each other, and a gear groove is formed in the third gear by transmitting power of the third gear to the fourth gear to rotate, and the gear groove is used for limiting a movement range of the fourth gear.

4. The door lock according to claim 3, wherein the second gear has an intermittent gear structure, the gear groove has an arc-shaped waist groove, and a rotation angle of the second gear is not smaller than an arc-shaped included angle of the gear groove.

5. The door lock according to claim 1, wherein the limiting piece is of an annular structure and can be sleeved on the transmission seat, the first limiting protrusion is arranged on an inner ring of the limiting piece, and the first limiting boss and the cam are not on the same plane.

6. The door lock according to claim 5, wherein the outer ring of the limiting piece is provided with at least a first groove and a second groove, and the fixing seat is provided with a second limiting piece and a third limiting piece for limiting the first groove and the second groove respectively; or (b)

7. The door lock according to any one of claims 1-6, further comprising an outer panel and/or a lock body.

8. The door lock of any one of claims 1-6, wherein the abutment comprises a bearing or a pulley; the clutch assembly comprises a first clutch piece and a second clutch piece, and the clutch pin is inserted into or separated from the clutch groove to realize the linkage or separation of the first clutch piece and the second clutch piece;

9. A door comprising a door lock according to any one of claims 1 to 8.