CN213269316U - Door lock capable of preventing peep hole - Google Patents

Abstract

The utility model discloses a door lock for preventing cat eye, including lock shell and the handle located outside it, be equipped with the spacing seat of handle, connect spacing lid and the pivot that resets in the lock shell, the lock shell forms the handle connecting hole, the setting of handle connecting hole is corresponded to the spacing seat of handle, connect spacing lid cup joint outside the pivot that resets and locate in the spacing seat of handle, and its one end stretches out in the handle connecting hole, the handle cup joints on connecting spacing lid and its one end is put in the handle connecting hole, and correspond the handle connecting hole on it and be equipped with one through the button pressure spring support press in the screw rather than the fixed button of circumference, the handle is connected with connecting spacing lid through the screw; one end of the reset rotating shaft is sleeved with a transmission square shaft which extends out of the reset rotating shaft and is positioned in the connection limiting cover through a pin; the one end of connecting spacing lid is equipped with the closed axle that is connected and one end forms the storage tank that supplies transmission square shaft to wear to establish through the screw, and when the button was not pressed, there was the distance of settlement between closed axle and the transmission square shaft.

Description

Door lock capable of preventing peep hole

Technical Field

The utility model relates to a tool to lock structure especially relates to a prevent cat eye lock.

Background

The lock with the handle or the handle is one of locks, is usually installed on a wooden door, a steel door, an aluminum alloy door or a material door and other security doors, and can drive the lock tongue on the security door to move by pulling the handle indoors, so that the security door is opened, the lock is convenient to unlock, and the lock is widely applied to most families. However, most of the existing security doors are provided with cat eyes, which is convenient for observing outdoor conditions, however, lawless persons can insert a special tool into a room and pull a handle after destroying the cat eyes, open the security door and then steal the room, which causes the security of the security door to be low, and threatens the personal and property security of a homeowner.

In view of the above, it is desirable to provide a door lock for preventing peep hole to be installed on a security door, so as to improve the security of the security door.

Disclosure of Invention

The utility model aims to solve the technical problem that a prevent cat eye lock is in order to install on the burglary-resisting door, improves the security of burglary-resisting door.

In order to solve the technical problem, the utility model discloses a as follows technical scheme: a door lock capable of preventing peep hole comprises a lock shell and a handle arranged outside the lock shell, wherein a handle limiting seat, a connecting limiting cover and a reset rotating shaft are arranged in the lock shell, the lock shell forms a handle connecting hole corresponding to the handle, the handle limiting seat is arranged corresponding to the handle connecting hole, the connecting limiting cover is sleeved outside the reset rotating shaft and sleeved in the handle limiting seat, one end of the connecting limiting cover extends out of the handle connecting hole, the handle is sleeved on one end of the connecting limiting cover, one end of the connecting limiting cover is arranged in the handle connecting hole, a key fixed in the circumferential direction of the connecting limiting cover is arranged on the handle corresponding to the handle connecting hole through a screw, the key is pressed in the screw through a key pressure spring, and the tail part of the screw is arranged in one end of the connecting limiting cover to enable the handle to be connected with the connecting limiting cover; one end of the reset rotating shaft is sleeved with a transmission square shaft through a pin, and one end of the transmission square shaft extends out of the reset rotating shaft and is positioned in the connection limiting cover; the connecting limiting cover is characterized in that a closing shaft connected with the key is arranged in one end of the connecting limiting cover through a screw, the other end of the closing shaft is inwards recessed towards one end of the closing shaft to form an accommodating groove for the transmission square shaft to penetrate through, the screw is arranged in the accommodating groove in a state that a screw head is arranged in the screw head and a screw rod is arranged outside, the screw rod of the screw extends out of one end of the closing shaft to be connected with the key, and a set distance is reserved between the closing shaft and one end of the transmission square shaft when the key is not pressed so that the closing shaft can move upwards to be in transmission connection with the transmission square shaft.

The further technical scheme is as follows: the other end of connecting spacing lid is located the lock shell and outwards extends and forms a loading board, the first terminal surface butt of loading board and the spacing seat of handle, the one end of the pivot that resets put into in the other end of connecting spacing lid, and its other end outwards extend form with the baffle of loading board butt.

The further technical scheme is as follows: the inner side of one end of the connecting limiting cover extends inwards to form a flange, a connecting cavity for fixing the tail of the screw is formed between the flange and the end face of one end of the connecting limiting cover, a moving cavity for moving upwards of the closing shaft is formed between the flange and the end face of one end of the reset rotating shaft, the closing shaft extends outwards to form a blocking flange, and the blocking flange is abutted against the flange to block the descending of the closing shaft.

The further technical scheme is as follows: one end of the closing shaft and the connecting column of the key are respectively arranged in the screw at the tail port of the screw and the head port of the screw, and the connecting column of the key is sleeved on the screw rod of the screw extending out of the closing shaft and connected with each other.

The further technical scheme is as follows: the handle includes link and handle end, the one end and the handle end of link are connected, its other end put into in the handle connecting hole, the inboard inside extension of link forms the block portion, the first surface of block portion with the tip butt of the one end of connecting spacing lid, the one end of link corresponds the handle connecting hole is inwards recessed and is formed the button holding mouth, the afterbody of screw passes through the button holding mouth put into in connect in the spacing lid, and through the head of screw will block the portion and press to connect spacing lid and cup joint the link and cover in connecting spacing.

The further technical scheme is as follows: the connecting column of the key is vertically arranged in the center of the pressing cover of the key, and the bottom end of the pressing cover is inwards recessed towards the direction far away from the connecting column to form an accommodating cavity for accommodating the head of the screw.

The further technical scheme is as follows: the handle limiting seat is arranged in the lock shell in a rotatable and front-back limiting mode, clamping grooves are formed in the side edges of two ends of the handle limiting seat respectively, the reversing sliding block is arranged on one side of the handle limiting seat in a front-back limiting mode relative to the handle limiting seat in a reciprocating mode, a clamping block extends outwards from the middle of the reversing sliding block, and the clamping block is arranged in one clamping groove so that the handle limiting seat is clamped with the reversing sliding block.

The further technical scheme is as follows: at least one positioning rod group is arranged on one side of the handle connecting hole in the lock shell, each positioning rod group comprises two positioning rods which are oppositely arranged, the reversing sliding block corresponds to each positioning rod to form a sliding groove, the sliding grooves are arranged along the direction towards the handle connecting hole, and the positioning rods are arranged in the corresponding sliding grooves to install the reversing sliding block in the lock shell, so that the reversing sliding block can move back and forth relative to the handle connecting hole along the positioning rods through the sliding grooves.

The further technical scheme is as follows: one end of the reversing sliding block, which is far away from the handle limiting seat, is connected with the lock shell through at least one spring.

The further technical scheme is as follows: the lock shell is internally provided with a circular truncated cone corresponding to the surrounding bulge of the handle connecting hole, the second end surface of the handle limiting seat extends outwards along the edge of the second end surface to form a cover edge sleeved on the circular truncated cone, and two ends of the first end surface of the handle limiting seat are respectively provided with a screw hole for placing a fixing screw, so that the reset rotating shaft and the handle limiting cover are arranged in the handle limiting seat.

The utility model has the advantages of: the cat-eye-proof door lock of the utility model is characterized in that a handle connecting hole is formed by a lock shell corresponding to a handle, a handle limiting seat is arranged in the lock shell, the handle limiting seat is arranged in the lock shell corresponding to the handle connecting hole, a connecting limiting cover sleeved outside a reset rotating shaft is arranged in the lock shell, the connecting limiting cover is sleeved on the handle limiting seat and extends out of the handle connecting hole to be connected with the handle so that the connecting limiting cover can rotate along with the handle, a button circumferentially fixed with the handle is arranged on the handle corresponding to the handle connecting hole through a screw, so that the handle is connected with the connecting limiting cover through the screw, the connecting limiting cover can rotate along with the handle, a transmission square shaft is sleeved at one end of the reset rotating shaft, a closed shaft of an accommodating groove for the transmission square shaft to penetrate is formed at one end of the button through the screw, and the closed shaft has a set distance from the transmission square shaft when the button is not pressed, so that the separation of closing axle and transmission square shaft and unable drive transmission square shaft, handle idle running can't unblank to realize preventing cat eye's safety function, promote closing axle and transmission square shaft through pressing the button and be connected, thereby make the pivot that resets can rotate along with the handle, in order to realize unblanking or locking. And the press key is pressed against the head of the screw through the press key pressure spring, so that the press key can be quickly reset according to the elasticity of the press key pressure spring, and the practicability is high.

Drawings

Fig. 1 is a schematic view of an exploded structure of the door lock for preventing cat-eye according to the present invention;

FIG. 2 is a schematic structural view of the reversing slider and the lock case of the door lock for preventing cat-eye according to the present invention;

FIG. 3 is a schematic view of the bottom structure of the door lock of the present invention after the installation of the reversing slider, the handle limiting seat and the connecting limiting cover;

fig. 4 is a schematic structural view of the door lock for preventing cat-eye of the present invention;

FIG. 5 is a partial cross-sectional view of the anti-peep hole door lock of FIG. 4 taken along line A-A;

FIG. 6 is a cross-sectional view of the anti-peep hole door lock of FIG. 4 taken along line B-B;

FIG. 7 is a partial cross-sectional view of the anti-peep hole door lock of FIG. 4 taken along line A-A when the key is depressed;

FIG. 8 is a cross-sectional view of the anti-peep hole door lock of FIG. 4 taken along line B-B when the key is pressed.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1 to 6, in this embodiment, the door lock 10 includes a lock housing 11 and a handle 12 disposed outside the lock housing 11, a handle limiting seat 14, a connecting limiting cover 15 and a reset rotating shaft 16 are disposed in the lock housing 11, the lock housing 11 is formed with a handle connecting hole 17 corresponding to the handle 12, the handle limiting seat 14 is disposed corresponding to the handle connecting hole 17, the connecting limiting cover 15 is sleeved outside the reset rotating shaft 16 and sleeved in the handle limiting seat 14, one end of the connecting limiting cover 15 extends out of the handle connecting hole 17, the handle 12 is sleeved on one end of the connecting limiting cover 15, one end of the handle 12 is disposed in the handle connecting hole 17, a key 19 circumferentially fixed to the handle 12 is disposed on the handle 12 corresponding to the handle connecting hole 17 through a screw 191, the key 19 is pressed in the screw 191 through a key pressing spring 192, the tail of the screw 191 is inserted into one end of the connection limiting cover 15 to connect the handle 12 and the connection limiting cover 15. One end of the reset rotating shaft 16 is sleeved with a transmission square shaft 162 through a pin 161, and one end of the transmission square shaft 162 extends out of the reset rotating shaft 162 and is positioned in the connection limiting cover 15. A closing shaft 152 connected with the key 19 is arranged in one end of the connecting limiting cover 15 through a screw 151, an accommodating groove 1521 through which the transmission square shaft 162 passes is formed by the inward concave of the other end of the closing shaft 152 towards one end, the screw 151 is arranged in the accommodating groove 1521 in a state that a screw head is arranged inside and a screw rod is arranged outside, and the screw rod of the screw 151 extends out of one end of the closing shaft 152 to be connected with the key 19, wherein, in a state that the key 19 is not pressed, a set distance is reserved between the closing shaft 152 and one end of the transmission square shaft 162, so that the closing shaft 152 moves upwards to enable the closing shaft 152 to be in transmission connection with the transmission square shaft 162. The screw 191 may be a socket head cap screw, the pin 161 may be a cotter pin, the tail of the screw 191 is inserted into one end of the connection limit cover 15 to connect the handle 12 and the connection limit cover 15, so that the connection limit cover 15 can rotate with the handle 12, the closing shaft 152 and the transmission square shaft 162 are matched by the key 19, the closing shaft 152 has a set distance from the transmission square shaft 162 in a state that the key 19 is not pressed, so that the closing shaft 152 is separated from the transmission square shaft 162 and the transmission square shaft 162 cannot be driven, the handle 12 idles, the idling is that the connection limit cover 15 rotates with the handle 12 to reset the rotating shaft 16 and cannot be unlocked, so as to achieve the safety function of preventing cat's eyes, the closing shaft 152 is pushed to be connected with the transmission square shaft 162 by pressing the key 19, and at this time, the handle 12, the connection limit cover 15, the key 19, the screw 191, and the screw 191, The closing shaft 152, the transmission square shaft 162 and the reset rotating shaft 16 can be linked, so that the reset rotating shaft 16 can rotate along with the handle 12 to realize unlocking or locking. The key 19 is pressed against the head of the screw 191 through the key compression spring 192, so that the key 19 can be quickly reset according to the elasticity of the key compression spring 192, and the practicability is high.

The end face of one end of the handle 12 is connected with the lock case 11 through a first plane bearing 101, so that the handle 12 can be installed outside the lock case 11 in a rotatable and front-back limiting manner, and gaskets 102 are respectively arranged between the handle 12 and the lock case 11 and between the first plane bearing 101 to protect the connection from being damaged. A handle connecting hole 17 is formed on the lock case 11 corresponding to the handle 12, so that one end of the handle 12 is placed in the lock case 11, a connecting limit cover 15 sleeved outside the reset rotating shaft 16 is arranged in the lock case 11, the connecting limit cover 15 is sleeved on the handle limit seat 14 and then extends out of the handle connecting hole 17 to be connected with the handle 12, and the connecting limit cover 15 rotates along with the handle 12.

Specifically, in this embodiment, a reversing slider 13 is further disposed in the lock housing 11, the handle limiting seat 14 is disposed in the lock housing 11 in a manner of being rotatable to limit forward and backward, the side edges of the two ends of the handle limiting seat 14 respectively form a slot 141, the reversing slider 13 is disposed on one side of the handle limiting seat 14 in a manner of being movable back and forth relative to the handle limiting seat 14 to limit forward and backward, the middle of the reversing slider 13 extends outward to form a block 131, and the block 131 is disposed in one of the slots 141 of the handle limiting seat 14 to allow the handle limiting seat 14 to be clamped with the reversing slider 13, so as to limit the position of the handle 12 and the door opening direction. By arranging the reversing slide block 13 and the handle limiting seat 14 in the lock case 11, the handle limiting seat 14 corresponds to the handle connecting hole 17 and is arranged in the lock case 11 in a rotatable and front-back limiting manner, the clamping grooves 141 are respectively formed at the two side edges of the handle limiting seat 14, the reversing slide block 13 is arranged at one side of the handle limiting seat 14 in a front-back limiting manner in a manner of moving back and forth relative to the handle limiting seat 14, the middle part of the reversing slide block 13 extends outwards to form a clamping block 131, so that the position of the handle limiting seat 14 and the direction of the handle 12 are limited by clamping the clamping block 131 in one clamping groove 141, the reversing slide block 13 is controlled to move away from the handle limiting seat 14, the clamping block 131 is separated from the clamping groove 141, the handle 12 is rotated, the connecting limiting cover 15 rotates along with the handle 12 to drive the handle limiting seat 14 to rotate, when the other clamping groove 141 faces the clamping block 131, the reversing slide block 13 is controlled to move towards, the clamping block 131 is clamped in the other clamping groove 141 to limit the position of the handle limiting seat 14, the reversing of the handle 12 is completed, the operation is simple, convenient and quick, the production of handles in various door opening directions is not needed, the handle 12 and the handle limiting seat 14 are not needed to be disassembled and replaced, the production cost is saved, the structure is simple, the cat eye preventing door lock 10 and the door are favorably installed, and the practicability is high.

Specifically, in this embodiment, two positioning rod sets 18 are disposed in the lock case 11 on one side of the handle connecting hole 17, each positioning rod set 18 includes two positioning rods 181 disposed oppositely, the reversing slider 13 forms a sliding slot 132 corresponding to each positioning rod 181, the sliding slot 132 is disposed in a direction toward the handle connecting hole 17, the positioning rods 181 are inserted into the corresponding sliding slots 132 to mount the reversing slider 13 in the lock case 11, so that the reversing slider 13 moves back and forth along the positioning rods 181 relative to the handle connecting hole 17 through the sliding slots 132. The two positioning rods 181 of the positioning rod set 18 are respectively located at two sides of the fixture block 131 and are oppositely disposed, so that the movement of the reversing slider 13 is stable and reliable, and of course, in other embodiments, the number of the positioning rod sets 18 may be one or more.

Preferably, in this embodiment, one end of the reversing slider 13, which is away from the handle limiting seat 14, is connected to the lock housing 11 through two springs 133, the two springs 133 are respectively disposed on two sides of one end of the reversing slider 13, which is away from the handle limiting seat 14, one end of the spring 133 is connected to the reversing slider 13, and the other end of the spring 133 is connected to the lock housing 11, so that the reversing slider 13 can be quickly reset by using the characteristics of the springs 133, the clamping block 131 is inserted into the corresponding clamping groove 141, the fixing of the handle limiting seat 14 is realized, the steering of the handle 12 is determined, and meanwhile, according to the characteristics of the springs 133, the reversing slider 13 can be prevented from automatically moving away from the handle connecting hole 17. Specifically, the clamping block 131 is located at one end of the reversing sliding block 13 close to the handle limiting seat 14, and a contact surface matched with the side edge of the handle limiting seat 14 is formed at one end of the reversing sliding block 13 close to the handle limiting seat 14, so that the reversing sliding block 13 and the handle limiting seat 14 are clamped more firmly. Of course, in other embodiments, the number of the springs 133 may be one or more.

Specifically, in this embodiment, the other end of the connection limiting cover 15 is located in the lock housing 11 and extends outward to form a bearing plate 153, the bearing plate 153 abuts against the first end face of the handle limiting seat 14, one end of the reset rotating shaft 16 is disposed in the other end of the connection limiting cover 15, and the other end of the reset rotating shaft 16 extends outward to form a baffle 163 abutting against the bearing plate 153. One side of the baffle 163 and one side of the bearing plate 153 correspondingly extend downwards to form a positioning rod 1001, a limiting strip groove 145 for a limiting strip 1002 to be arranged is formed on the outer side of the handle limiting seat 14, and the handle limiting seat 14 is abutted to the positioning rod 1001 of the baffle 163 and the bearing plate 153 through the limiting strip 1002 placed in the limiting strip groove 145, so that the rotation range of the connecting limiting cover 15 and the reset rotating shaft 16 is limited.

Preferably, the connection limiting cover 15 is connected with the handle limiting seat 14 through a second planar bearing 103, so that the connection limiting cover 15 is rotatably installed in the handle limiting seat 14 in a front-back limiting manner, an installation groove for the second planar bearing 103 to be arranged is formed in the lock case 11 in the middle of the first end surface of the handle limiting seat 14 in an extending manner, the handle limiting seat 14 and the bearing plate 153 of the connection limiting cover 15 are connected with the second planar bearing 103 through gaskets 102 respectively, so as to avoid being damaged in the installation process, and a three-wave gasket 108 can be arranged between the gasket 102 between the second planar bearing 103 and the handle limiting seat 14. The reset rotating shaft 16 is connected to the connection limiting cover 15 through the third planar bearing 104, the bottom surface of the baffle 163 is recessed inward to form an accommodating chamber for the third planar bearing 104 to be disposed, and the top surface of the bearing plate 153 is raised outward to form an insertion end 1531 for fixing the third planar bearing 104 in the accommodating chamber in cooperation with the accommodating chamber. The handle limiting seat 14 is sleeved with a torsion spring 107, and one end of the torsion spring 107 is abutted to the reversing sliding block 13.

Specifically, in this embodiment, the inner side of one end of the connection limiting cover 15 extends inward to form a rib 154, a connection cavity for fixing the tail of the screw 191 is formed between the rib 154 and the end surface of one end of the connection limiting cover 15, a moving cavity 155 for moving the closing shaft 152 upward is formed between the rib 154 and the end surface of one end of the reset rotating shaft 16 in the connection limiting cover 15, the outer side of the closing shaft 152 extends outward to form a blocking rib 1522, and the blocking rib 1522 abuts against the rib 154 to block the downward movement of the closing shaft 152.

Specifically, in this embodiment, one end of the closing shaft 152 and the connecting column 193 of the key 19 are respectively disposed in the screw 191 at the tail port of the screw 191 and the head port of the screw 191, and the connecting column 193 of the key 19 is sleeved on the screw rod of the screw 151 extending out of the closing shaft 152 and connected to each other, the inner side of the closing shaft 152 extends inward to form a screw rib 1523, the screw rib 1523 is abutted to the bottom of the screw head of the screw 151, and one end of the screw rod of the screw 151 extending out of the closing shaft 152 is connected to the connecting column of the key 19, so that the closing shaft 152 is connected to the key 19 and can move along with the key 19.

Specifically, in this embodiment, the handle 12 includes a connecting end 121 and a handle end 122, one end of the connecting end 121 is connected to the handle end 122, the other end of the connecting end is inserted into the handle connecting hole 17, an inner side of the connecting end 121 extends inward to form a blocking portion 1211, a first surface of the blocking portion 1211 abuts against an end of one end of the connection limiting cap 15, one end of the connecting end 121 is recessed inward corresponding to the handle connecting hole 17 to form a key receiving opening 1212, a tail portion of the screw 191 is inserted into the connection limiting cap 15 through the key receiving opening 1212, a head portion of the screw 191 abuts against a second surface of the blocking portion 1211, and the head portion of the screw 191 presses the blocking portion 1211 against the connection limiting cap 15 to connect the connecting end 121 onto the connection limiting cap 15.

Preferably, the connection post 193 of the key 19 is vertically disposed at the center of the pressing cover 194 of the key 19, and the bottom end of the pressing cover 194 is recessed inward in the direction away from the connection post 193 to form an accommodating cavity 195 for accommodating the head of the screw 191, so that when the key 19 is pressed, the key 19 can move toward the connection limiting cover 15 along the key accommodating hole 1212.

Specifically, in this embodiment, a circular truncated cone 171 is formed in the lock housing 11 corresponding to the circumference of the handle connection hole 17 in a protruding manner, the second end surface of the handle limiting seat 14 extends outward along the edge thereof to form a cover edge sleeved on the circular truncated cone 171, and two ends of the first end surface of the handle limiting seat 14 are respectively provided with a screw hole 142 for the fixing screw 105 to be inserted into, so that the reset rotation shaft 16 and the handle limiting cover 15 are better installed in the handle limiting seat 14. Preferably, the handle stopper seat 14 is rotatably disposed on the circular truncated cone 171, a fixing baffle 143 is formed by extending a first surface of the handle stopper seat 14 upward, support pillars 144 are respectively formed at two ends of the fixing baffle 143, a pressing plate 106 is further disposed in the lock housing 11, the pressing plate 106 is disposed on the support pillars 144 and located above the reset rotating shaft 16, and is pressed on the baffle 163 of the reset rotating shaft 16, so that the reset rotating shaft 16 and the connecting stopper cover 15 can be better mounted in the handle stopper seat 14. The supporting post 144 may be located above the fastening slot 141, the screw hole 142 is disposed on the supporting post 144, and the pressing plate 106 is fixed on the supporting post 144 by a fixing screw 105.

Referring to fig. 7 and 8, in the present embodiment, when the key 19 is pressed, the pressing cover 194 of the key 19 is pressed into the key receiving hole 1212, and the connecting post 193 of the key 19 pushes the closing shaft 152 to move in the moving cavity 155 and press-fit on the transmission square shaft 162, so that the handle 12, the connection limiting cover 15, the key 19, the screw 191, the closing shaft 152, the transmission square shaft 162, and the reset rotating shaft 16 can rotate in a linked manner, and the reset rotating shaft 16 can rotate along with the handle 12, thereby unlocking or locking.

To sum up, the utility model discloses prevent cat eye lock forms the handle connecting hole through corresponding the handle with the lock shell, set up in the lock shell and cup joint the spacing lid of connection outside the pivot that resets and will connect spacing lid cover to locate behind the spacing seat of handle stretch out and be connected so that it can rotate along with the handle to connect spacing lid with the handle in the handle connecting hole, and set up the button on hand, cooperation closure axle and transmission square shaft, under the state that the button was not pressed, closed axle has a distance of settlement apart from transmission square shaft, so that closure axle and the separation of transmission square shaft and unable drive transmission square shaft, the handle idle running, can't unblank, in order to realize preventing the safety function of cat eye, safety and reliability. Meanwhile, a reversing slide block and a handle limiting seat are arranged in the lock shell, the handle limiting seat corresponds to the handle connecting hole and is arranged in the lock shell in a rotatable and front-back limiting mode, clamping grooves are respectively formed at the side edges of two ends of the handle limiting seat, the reversing slide block is arranged at one side of the handle limiting seat in a front-back limiting mode in a manner of moving back and forth relative to the handle limiting seat, a clamping block is formed by extending outwards the middle of the reversing slide block, the position and the handle direction of the handle limiting seat are limited by clamping the clamping block in one clamping groove, the reversing slide block is controlled to move away from the handle limiting seat, the clamping block is separated from the clamping grooves, the handle is rotated, a connecting limiting cover drives the handle limiting seat to rotate along with the rotation of the handle, when the other clamping groove faces the clamping block, the reversing slide block moves towards the handle limiting seat, the clamping block is clamped in the other, the door lock is simple and quick to operate, does not need to produce handles in various door opening directions, does not need to disassemble and replace the handles, saves production cost, is simple in structure, is convenient for installation of the door lock and the door, and is high in practicability.

The foregoing is considered as illustrative of the preferred embodiments of the invention and is not intended to limit the invention in any way. Various equivalent changes and modifications can be made on the basis of the above embodiments by those skilled in the art, and all equivalent changes and modifications within the scope of the claims should fall within the protection scope of the present invention.

Claims (10)

1. A door lock capable of preventing peep hole is characterized by comprising a lock shell and a handle arranged outside the lock shell, wherein a handle limiting seat, a connecting limiting cover and a reset rotating shaft are arranged in the lock shell, the lock shell forms a handle connecting hole corresponding to the handle, the handle limiting seat is arranged corresponding to the handle connecting hole, the connecting limiting cover is sleeved outside the reset rotating shaft and sleeved in the handle limiting seat, one end of the connecting limiting cover extends out of the handle connecting hole, the handle is sleeved on one end of the connecting limiting cover, one end of the handle is arranged in the handle connecting hole, a key fixed in the circumferential direction of the handle connecting hole is arranged on the handle corresponding to the handle connecting hole through a screw, the key is pressed in the screw through a key pressure spring, and the tail of the screw is arranged in one end of the connecting limiting cover to enable the handle to be connected with the connecting limiting cover; one end of the reset rotating shaft is sleeved with a transmission square shaft through a pin, and one end of the transmission square shaft extends out of the reset rotating shaft and is positioned in the connection limiting cover; the connecting limiting cover is characterized in that a closing shaft connected with the key is arranged in one end of the connecting limiting cover through a screw, the other end of the closing shaft is inwards recessed towards one end of the closing shaft to form an accommodating groove for the transmission square shaft to penetrate through, the screw is arranged in the accommodating groove in a state that a screw head is arranged in the screw head and a screw rod is arranged outside, the screw rod of the screw extends out of one end of the closing shaft to be connected with the key, and a set distance is reserved between the closing shaft and one end of the transmission square shaft when the key is not pressed so that the closing shaft can move upwards to be in transmission connection with the transmission square shaft.

2. The door lock of claim 1, wherein the other end of the connection limiting cover is located inside the lock housing and extends outward to form a bearing plate, the bearing plate abuts against the first end face of the handle limiting seat, one end of the reset shaft is disposed inside the other end of the connection limiting cover, and the other end of the reset shaft extends outward to form a baffle plate abutting against the bearing plate.

3. The door lock according to claim 1, wherein the inner side of the end of the connection limit cover extends inward to form a rib, a connection cavity for fixing the tail of the screw is formed between the rib and the end surface of the end of the connection limit cover, a moving cavity for moving the closing shaft upward is formed between the rib and the end surface of the end of the reset rotating shaft, the closing shaft extends outward to form a blocking rib, and the blocking rib abuts against the rib to block the downward movement of the closing shaft.

4. The door lock of claim 1, wherein one end of the closing shaft and the connecting post of the button are respectively disposed in the screw at the tail port of the screw and the head port of the screw, and the connecting post of the button is sleeved on the screw rod of the screw extending out of the closing shaft to connect with each other.

5. The door lock with the peep hole preventing function as claimed in claim 1, wherein the handle comprises a connecting end and a handle end, one end of the connecting end is connected with the handle end, the other end of the connecting end is placed in the handle connecting hole, the inner side of the connecting end extends inwards to form a blocking portion, a first surface of the blocking portion is abutted to the end portion of one end of the connecting limiting cover, one end of the connecting end is recessed inwards to form a key accommodating hole corresponding to the handle connecting hole, the tail portion of the screw is placed in the connecting limiting cover through the key accommodating hole, and the head portion of the screw presses the blocking portion to the connecting limiting cover to enable the connecting end to be sleeved on the connecting limiting cover.

6. The door lock for preventing cat-eye according to claim 1, wherein the connecting column of the button is vertically arranged at the center of the pressing cover of the button, and the bottom end of the pressing cover is recessed inwards in the direction away from the connecting column to form a containing cavity for containing the head of the screw.

7. The door lock of claim 1, wherein the lock housing further comprises a reversing slider, the handle-limiting seat is rotatably disposed in the lock housing for forward and backward limiting, and the two ends of the handle-limiting seat are respectively formed with a slot, the reversing slider is disposed on one side of the handle-limiting seat for forward and backward limiting with respect to the handle-limiting seat, and the middle of the reversing slider extends outward to form a locking block, and the locking block is disposed in one of the slots for locking the handle-limiting seat with the reversing slider.

8. The door lock of claim 7, wherein at least one positioning rod set is disposed in the lock case at a side of the handle connecting hole, each positioning rod set includes two positioning rods disposed opposite to each other, the direction-changing slider forms a sliding groove corresponding to each positioning rod, the sliding groove is disposed in a direction toward the handle connecting hole, the positioning rods are inserted into the corresponding sliding grooves to mount the direction-changing slider in the lock case, so that the direction-changing slider is moved back and forth along the positioning rods through the sliding grooves relative to the handle connecting hole.

9. The door lock of claim 7 wherein the reversing slider is connected to the housing at an end remote from the handle retainer by at least one spring.

10. The door lock of claim 1, wherein a circular truncated cone is formed in the lock housing corresponding to the circumference of the handle connecting hole, the second end surface of the handle limiting seat extends outwards along the edge of the second end surface to form a cover edge sleeved on the circular truncated cone, and two ends of the first end surface of the handle limiting seat are respectively provided with a screw hole for placing a fixing screw, so that the reset rotating shaft and the handle limiting cover are installed in the handle limiting seat.

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