CN220151093U

CN220151093U - Door lock with child lock function and door with same

Info

Publication number: CN220151093U
Application number: CN202321695838.8U
Authority: CN
Inventors: 徐志煜
Original assignee: Hangzhou Ezviz Network Co Ltd
Current assignee: Hangzhou Ezviz Network Co Ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2023-12-08
Anticipated expiration: 2033-06-29

Abstract

The utility model discloses a door lock with a child lock function, which comprises: a mounting base; the handle is rotatably arranged on the mounting seat; the handle sleeve is arranged on the handle and can synchronously rotate along with the handle, and is provided with a cylindrical connecting groove; one end of the clutch sleeve is provided with a connecting shaft which stretches into the connecting groove; the cover plate is covered on the mounting seat; the clutch sleeve is in a free state and is fixed relative to the mounting seat, and can synchronously rotate along with the handle sleeve when in a locking state; the inner peripheral wall of the connecting groove is convexly provided with a pressing block, the outer surface of the connecting shaft is provided with a pressed part matched with the pressing block, and the pressing block is configured to press the pressed part in the process that the handle is lifted and rotated; a clutch sleeve reset torsion spring is arranged between the clutch sleeve and the cover plate. The utility model can reduce the whole width of the door lock and prolong the service life of the handle reset torsion spring.

Description

Door lock with child lock function and door with same

Technical Field

The utility model relates to the technical field of door locks, in particular to a door lock with a child lock function and a door with the same.

Background

The door lock is generally provided with a handle in a room, and a user can open the door only by pressing the handle in the room. In consideration of safety and convenience, many consumers choose to set a cat eye on the door so as to observe visitors, however, the cat eye is easy to be utilized by lawbreakers, the cat eye is jacked up, a special bendable rod can be inserted from the cat eye, and the door handle in the room can be pressed by the rod, so that the lawbreakers can conveniently open the door outdoors. In addition, children in the room can sometimes open the door to go out under the condition that parents don't notice, so that great potential safety hazards exist. The door lock of the related art is provided with a child lock function, however, the size of the door lock is larger, which is not beneficial to the miniaturization design of products. Meanwhile, the reset of the clutch sleeve is realized by virtue of the reset torsion spring of the handle, so that the load of the reset torsion spring of the handle is large, the fatigue and the failure of the reset torsion spring of the handle are easily caused after long-term use, and the reset of the handle is not in place.

Disclosure of Invention

The present utility model aims to solve one of the technical problems in the related art to a certain extent. Therefore, the utility model provides a door lock with a child lock function and a door with the same.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a door lock with child lock function, comprising: the mounting seat is used for being fixedly mounted on the door; a handle rotatably provided on the mount; the handle sleeve is arranged on the handle and can synchronously rotate along with the handle, and the handle sleeve is provided with a cylindrical connecting groove; one end of the clutch sleeve is provided with a connecting shaft which stretches into the connecting groove; the cover plate is covered on the mounting seat; the clutch sleeve is in a free state and is fixed relative to the mounting seat, and the clutch sleeve can synchronously rotate along with the handle sleeve when in a locking state; the inner peripheral wall of the connecting groove is convexly provided with a pressing block, the outer surface of the connecting shaft is provided with a pressed part matched with the pressing block, and the pressing block is configured to press the pressed part in the process that the handle is lifted and rotated so as to drive the clutch sleeve to rotate to realize back locking; and a clutch sleeve reset torsion spring for driving the clutch sleeve to reset is arranged between the clutch sleeve and the cover plate.

The application of the utility model has the following beneficial effects:

1. the lifting and locking functions of the door lock are realized through the cooperation of the pressing block and the pressed part, and meanwhile, the pressing block is arranged on the inner peripheral wall of the connecting groove, so that the pressed part on the connecting shaft does not need to extend outwards, the overall design size of the clutch sleeve can be reduced, the size of a door lock product in the width direction is reduced, and the trend of miniaturization of the product is met;

2. a clutch sleeve reset torsion spring is independently arranged between the clutch sleeve and the cover plate, so that on one hand, the reset elastic force is not required to be transmitted by the pressure part, and on the other hand, the load of the handle reset torsion spring can be lightened, and the service life of the handle reset torsion spring is prolonged.

Optionally, clutch sleeve resets the torsion spring cover and establishes in clutch sleeve's outside, clutch sleeve resets the torsion spring and has two pins, the apron is formed with spacing arch towards the internal surface protrusion of mount pad, clutch sleeve is provided with the actuation arch, and spacing arch and actuation arch all are located two between the pin.

Optionally, the other end of clutch sleeve is provided with the drive shaft, the apron is provided with the mounting hole, the drive shaft passes the mounting hole and rotates the setting on the apron through the jump ring.

Optionally, the outer surface of the connecting shaft protrudes to form a bump, the bump has an outer circumferential surface in running fit with the inner circumferential wall of the connecting groove, and a compression surface in contact with or clearance fit with the compression block surface along the circumferential direction, and the compression surface is a compression part.

Optionally, the handle has a left side mounting position and a right side mounting position relative to the mounting seat, the compression surface includes a first compression surface and a second compression surface, and the first compression surface and the second compression surface are circumferentially spaced 180 ° apart; when the handle is positioned at the left side installation position, the first pressure receiving surface is in contact with or clearance fit with the pressurizing block surface; the second compression face is in contact with or clearance fit with the compression face when the handle is in the right side mounting position.

Optionally, the handle cover is equipped with the handle reset torsional spring, the handle reset torsional spring has two pins, mount pad bilateral symmetry is provided with two installation positions, installation position detachably installs the setting element, the handle is provided with the actuating piece, setting element and actuating piece all are located two between the pin.

Optionally, a through hole is formed in the inner peripheral wall of the connecting groove along the radial direction, a pin shaft is slidably arranged in the through hole, and a connecting hole matched with the pin shaft is formed in the connecting shaft along the radial direction; when the pin shaft is inserted into the connecting hole, the clutch sleeve is in a locking state; and when the pin shaft exits from the connecting hole, the clutch sleeve is in a free state.

Optionally, two of the perforations are provided, and the two perforations are circumferentially spaced 180 ° apart, and the pressing block is circumferentially located at a position intermediate the two perforations.

Optionally, the mount pad is provided with the push pedal that is used for driving the round pin axle to slide along the perforation, the push pedal has to push away the portion, it has to push away the plane and is located to push away the arc surface that pushes away the plane both sides to push away the portion.

In addition, the utility model also provides a door comprising a door body and the door lock with the child lock function according to any one of the technical schemes, wherein the mounting seat is fixedly mounted on the door body. The door provided by the utility model is similar to the door lock in the reasoning process of the beneficial effects, and the description is omitted here.

These features and advantages of the present utility model will be disclosed in more detail in the following detailed description and the accompanying drawings. The best mode or means of the present utility model will be described in detail with reference to the accompanying drawings, but is not limited to the technical scheme of the present utility model. In addition, these features, elements, and components are shown in plural in each of the following and drawings, and are labeled with different symbols or numerals for convenience of description, but each denote a component of the same or similar construction or function.

Drawings

The utility model is further described below with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of a door lock with a child lock function according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a door lock according to an embodiment;

FIG. 3 is an exploded view of the clutch sleeve and the handle sleeve of the embodiment;

FIG. 4 is a schematic view of a clutch sleeve according to an embodiment;

FIG. 5 is a schematic view of the handle sleeve according to the embodiment;

FIG. 6 is a schematic view of the assembly of the clutch sleeve and the cover plate;

FIG. 7 is an enlarged schematic view of portion B of FIG. 6;

FIG. 8 is a sectional view of the door lock with the handle in the left side installed position;

FIG. 9 is a sectional view of the door lock with the handle in the right side installed position;

fig. 10 is an enlarged schematic view of the portion a in fig. 2.

The device comprises a mounting seat, a cover plate, a limiting protrusion, a clamp spring, a left side screw hole, a right side screw hole, a positioning screw, a shifting block, a handle sleeve, a connecting groove, a through hole, a pressurizing block, a pin shaft, a spring, a clutch sleeve, a connecting shaft, a lug, a first pressed surface, a second pressed surface, a actuating protrusion, a driving shaft and a clutch sleeve reset torsion spring, wherein the limiting protrusion, the clamping spring, the left side screw hole, the right side screw hole, the positioning screw, the shifting block, the handle sleeve, the handle, the connecting groove, the through hole, the connecting groove, the clamping block, the pressurizing block, the pin shaft, the spring, the clutch sleeve, the connecting shaft, the lug, the first pressed surface, the second pressed surface, the actuating protrusion, the driving shaft, the actuating protrusion and the inclined guide plate, and the clutch sleeve.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The examples in the embodiments are intended to illustrate the present utility model and are not to be construed as limiting the present utility model.

Reference in the specification to "one embodiment" or "an example" means that a particular feature, structure, or characteristic described in connection with the embodiment itself can be included in at least one embodiment of the disclosure. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

Examples: the present embodiment provides a door lock with child lock function, as shown in fig. 1 and 2, the door lock includes a mounting seat 1, a handle 2, a handle sleeve 3, a clutch sleeve 4, a cover plate 10, a square bar (not shown in the figure) and a lock tongue (not shown in the figure), the mounting seat 1 is fixedly mounted on a door body during mounting, a lock groove matched with the lock tongue is provided on the door frame, and the lock tongue can be driven to enter and exit relative to the lock groove by rotating the handle 2, so as to realize the functions of opening and locking the door. The handle 2 is rotatably arranged on the mounting seat 1, the handle sleeve 3 is arranged on the handle 2 and can synchronously rotate along with the handle 2, the common mode is that the handle sleeve and the handle sleeve are in spline connection, and the handle sleeve can be directly fixed together in a tight fit plugging, clamping, threaded connection and other modes. The clutch sleeve 4 has a free state and a locking state relative to the handle sleeve 3, the clutch sleeve 4 is fixed relative to the mounting seat 1 in the free state, and the clutch sleeve 4 can synchronously rotate along with the handle sleeve 3 in the locking state. The switching between the two states is generally realized through the pin shaft 32, the outer surface of the mounting seat 1 is provided with a poking block 14 in an extending mode, the poking block 14 is poked left and right, the push plate 7 can be driven to move through the internal oblique guide plate 8, the spring 33 is arranged between the pin shaft 32 and the handle sleeve 3, the pin shaft 32 which is slidably arranged on the handle sleeve 3 can be pushed to reciprocate by the cooperation of the push plate 7 and the spring 33, and the clutch sleeve 4 and the handle sleeve 3 can be locked or dissociated by the reciprocating movement of the pin shaft 32. The child lock function (or cat eye preventing function) can be realized through the structure.

As shown in fig. 3, 4 and 5, the handle sleeve 3 is provided with a cylindrical connecting groove 30, and one end of the clutch sleeve 4 is provided with a connecting shaft 40 extending into the connecting groove 30, so that when the clutch sleeve 4 is in a free state, if the handle 2 is pressed down, the handle 2 drives the handle sleeve 3 to rotate, and the handle sleeve 3 rotates relative to the clutch sleeve 4. The inner peripheral wall of the connecting groove 30 in this embodiment is formed with a pressing block 31 in a protruding manner, the outer surface of the connecting shaft 40 is provided with a pressed portion adapted to the pressing block 31, and the pressing block 31 is configured to press the pressed portion during the process of lifting and rotating the handle 2 so as to drive the clutch sleeve 4 to rotate to realize back locking. The lifting and locking functions of the door lock are realized by matching the pressing block 31 with the pressed part, and meanwhile, the pressing block 31 is arranged on the inner peripheral wall of the connecting groove 30, so that the pressed part on the connecting shaft 40 does not need to extend outwards, the overall design size of the clutch sleeve 4 can be reduced, the size of a door lock product in the width direction is reduced, and the trend of miniaturization of the product is met. In addition, a clutch sleeve reset torsion spring 5 for driving the clutch sleeve 4 to reset is arranged between the clutch sleeve 4 and the cover plate 10 in the embodiment, so that on one hand, the reset elastic force is not transmitted by the pressed part, and on the other hand, the load of the handle reset torsion spring 6 can be lightened, and the service life of the handle reset torsion spring is prolonged.

As shown in fig. 6 and 7, the clutch sleeve restoring torsion spring 5 is sleeved outside the clutch sleeve 4, the clutch sleeve restoring torsion spring 5 has two pins, respectively named as a first pin 50 and a second pin 51 for convenience of description, the cover plate 10 is formed with a limit protrusion 100 protruding toward the inner surface of the mount 1, the clutch sleeve 4 is provided with an actuating protrusion 42, and the limit protrusion 100 and the actuating protrusion 42 are both located between the two pins. When the clutch sleeve 4 rotates under the driving of the handle sleeve 3, the clutch sleeve 4 drives one of the pins to rotate through the actuating protrusion 42, and the limit of the other pin limit position protrusion 100 cannot follow the rotation, so that the clutch sleeve reset torsion spring 5 is deformed in a torsion mode, and a reset force can be provided for the clutch sleeve 4 when the external force is eliminated (a user releases the handle 2). The clutch sleeve 4 in the present embodiment is provided with a drive shaft 43 at the other end (end opposite to the end where the connecting shaft 40 is located), the cover plate 10 is provided with a mounting hole, and the drive shaft 43 passes through the mounting hole and is rotatably provided on the cover plate 10 by the snap spring 101.

The pressure receiving portion in this embodiment is specifically described as follows: a protrusion 41 is formed on the outer surface of the connecting shaft 40, and the protrusion 41 has an outer circumferential surface that is in rotational engagement with the inner circumferential wall of the connecting groove 30 and a pressure receiving surface that is in clearance engagement with the pressing block 31 in the circumferential direction, the pressure receiving surface being a pressure receiving portion. By designing the structure of the protruding block 41, when the clutch sleeve 4 is in a free state, if the handle 2 is pressed down, the inner peripheral wall of the connecting groove 30 and the outer peripheral surface of the protruding block 41 can rotate relatively, so that the rotation of the two is not influenced; when the lifting handle 2 is required to be locked, the pressurizing block 31 can be used for pressurizing the pressure receiving surface, so that the clutch sleeve 4 is driven to rotate to realize the locking. It will be appreciated that in other embodiments, the pressure block and the pressure receiving surface may be in surface contact.

In addition, the door lock in this embodiment further has a function of easily reversing the handle 2, specifically, the handle 2 has a left side mounting position and a right side mounting position with respect to the mounting seat 1, in order to ensure that both the handle 2 reversing child lock function and the lifting back lock function can be maintained, in this embodiment, the following design is made for the handle sleeve 3 and the clutch sleeve 4: the inner circumferential wall of the coupling groove 30 is provided with a penetration hole 300 in a radial direction, a pin 32 is slidably provided in the penetration hole 300, and the coupling shaft 40 is provided with a coupling hole adapted to the pin 32 in a radial direction. When the pin shaft 32 is inserted into the connecting hole, the clutch sleeve 4 is in a locking state; when the pin 32 exits the connecting hole, the clutch sleeve 4 is in a free state. And the perforations 300 are provided in two, the two perforations 300 being circumferentially spaced 180 ° apart, the pressing block 31 being circumferentially located at a position intermediate the two perforations 300. The left mounting position compression surface of the handle 2 opposite to the mounting seat 1 comprises a first compression surface 410 and a second compression surface 411, and the first compression surface 410 and the second compression surface 411 are circumferentially spaced 180 degrees apart; when the handle 2 is in the left-side mounting position, the first pressure receiving surface 410 is in surface contact or clearance fit with the pressurizing block 31; the second pressure receiving surface 411 is in surface contact or clearance fit with the pressurizing block 31 when the handle 2 is in the right-side mounting position. Through the structure, when the clutch sleeve 4 is in a free state, the handle 2 cannot be pressed down to drive the clutch sleeve 4 to rotate, so that the child lock function is realized; when the clutch sleeve 4 is in a locking state, the handle 2 is pressed down to drive the clutch sleeve 4 to rotate, so that unlocking is realized. When the handle 2 is lifted, no matter the clutch sleeve 4 is in a free state or a locking state, the clutch sleeve 4 can be driven to rotate in the opposite direction to the unlocking direction, so that lifting and back locking are realized.

Referring to fig. 8 and 9, for convenience of description, in the state in fig. 8, the pressing block 31 is in clearance fit with the first pressing surface 410, so that, taking the state in fig. 8 that the handle 2 is at the left side installation position (not taking the direction in fig. 8 as the reference, after the door lock is installed on the door body, the user faces the door body, the handle 2 is at the left side of the user at this time, so that the user can operate with the left hand conveniently, therefore, the handle 2 in fig. 8 is generally referred to as being at the left side installation position), when the handle 2 is lifted, the handle 2 drives the pressing block 31 to rotate, and the pressing block 31 drives the clutch sleeve 4 to rotate through the first pressing surface 410, so as to realize the lifting and locking function. In fig. 9, when the handle 2 is at the right-side mounting position, the pressing block 31 is in clearance fit with the second pressing surface 411, and the principle of operation is the same as that described above.

It will be appreciated that in other embodiments, the door lock may not have the handle reversing function, so that only one of the structures such as the perforation, the pin, the pressed surface, etc. may be provided, and the child lock function and the lifting anti-lock function may be realized in a single direction of the handle.

In addition, as shown in fig. 8, 9 and 10, in this embodiment, in order to facilitate reversing of the handle 2, two mounting positions are symmetrically arranged on the mounting seat 1, a positioning member is detachably mounted on the mounting seat, the handle 2 is provided with an actuating member, the handle 2 is sleeved with a handle reset torsion spring 6, the handle reset torsion spring 6 has two pins, for convenience of description, the two pins of the handle reset torsion spring 6 are referred to as a third pin 60 and a fourth pin 61, and the positioning member and the actuating member are both located between the third pin 60 and the fourth pin 61. Specifically, the positioning member is a positioning screw 13, the two mounting positions are a left side screw hole 11 and a right side screw hole 12 respectively, and the actuating member is a protrusion formed by protruding from the handle 2. Thus, when reversing is required, the positioning screw 13 needs to be removed, the handle 2 is turned 180 ° (the turning direction is to ensure that the pressing block 31 does not press a certain pressing surface during the turning process), and then the screw is screwed into another installation position. Compared with the prior art that a plurality of parts such as the handle sleeve 3, the handle reset torsion spring 6 and the like are required to be disassembled, the scheme of the utility model can simplify the reversing operation of the handle 2, and the door lock is not required to be disassembled, and the positioning screw 13 is only required to be disassembled and assembled after the handle 2 is rotated. It will be appreciated that in other embodiments, the mounting location may be a socket, and the positioning element may be a plug that is correspondingly a tight fit plug in the socket.

In the prior art, a push plate for driving the pin shaft to slide along the perforation is also arranged on the mounting seat, the push plate is provided with a pushing part, the specific structure of the pushing part is improved in the embodiment, the copying design is carried out on the pushing part, and specifically, the pushing part in the embodiment is provided with a pushing plane and pushing arc surfaces positioned on two sides of the pushing plane. In this way, the action between the pin 32 and the abutment is stable during the rotation of the pin 32 following the handle sleeve 3.

In summary, the door lock provided in this embodiment can have a child lock function and a lifting back lock function before and after the reversing of the handle 2, and the reversing operation of the handle 2 is very simple.

The above is only a specific embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and it should be understood by those skilled in the art that the present utility model includes but is not limited to the accompanying drawings and the description of the above specific embodiment. Any modifications which do not depart from the functional and structural principles of the present utility model are intended to be included within the scope of the appended claims.

Claims

1. A door lock with child lock function, comprising:

a mounting seat (1) for fixed mounting on a door;

a handle (2) rotatably provided on the mount (1);

a handle sleeve (3) which is arranged on the handle (2) and can synchronously rotate along with the handle (2), wherein the handle sleeve (3) is provided with a cylindrical connecting groove (30);

a clutch sleeve (4) having a connecting shaft (40) extending into the connecting groove (30) at one end thereof; the method comprises the steps of,

a cover plate (10) which is covered on the mounting seat (1);

the clutch sleeve (4) has a free state and a locking state relative to the handle sleeve (3), the clutch sleeve (4) is fixed relative to the mounting seat (1) when in the free state, and the clutch sleeve (4) can synchronously rotate along with the handle sleeve (3) when in the locking state;

the clutch is characterized in that a pressing block (31) is formed on the inner peripheral wall of the connecting groove (30) in a protruding mode, a pressed part matched with the pressing block (31) is arranged on the outer surface of the connecting shaft (40), and the pressing block (31) is configured to press the pressed part in the process that the handle (2) is lifted and rotated so as to drive the clutch sleeve (4) to rotate to realize back locking;

a clutch sleeve reset torsion spring (5) for driving the clutch sleeve (4) to reset is arranged between the clutch sleeve (4) and the cover plate (10).

2. Door lock with child lock function according to claim 1, characterized in that the clutch sleeve reset torsion spring (5) is sleeved outside the clutch sleeve (4), the clutch sleeve reset torsion spring (5) is provided with two pins, the cover plate (10) protrudes towards the inner surface of the mounting seat (1) to form a limit bulge (100), the clutch sleeve (4) is provided with an actuating bulge (42), and the limit bulge (100) and the actuating bulge (42) are both located between the two pins.

3. Door lock with child lock function according to claim 1 or 2, characterized in that the other end of the clutch sleeve (4) is provided with a drive shaft (43), the cover plate (10) is provided with a mounting hole, the drive shaft (43) passes through the mounting hole and is arranged on the cover plate (10) by rotation of a snap spring (101).

4. The door lock with child lock function according to claim 1, wherein the outer surface of the connecting shaft (40) is convexly formed with a projection (41), the projection (41) has an outer circumferential surface rotationally fitted with the inner circumferential wall of the connecting groove (30) and a pressure receiving surface circumferentially in surface contact with or clearance fit with the pressing block (31), and the pressure receiving surface is a pressure receiving portion.

5. Door lock with child lock function according to claim 4, characterized in that the handle (2) has a left-hand mounting position and a right-hand mounting position with respect to the mounting seat (1), the pressure receiving surface comprises a first pressure receiving surface and a second pressure receiving surface, and the first pressure receiving surface and the second pressure receiving surface are circumferentially spaced 180 °;

when the handle (2) is positioned at the left side installation position, the first pressed surface is in surface contact or clearance fit with the pressurizing block (31);

the second pressure surface is in surface contact or clearance fit with the pressure block (31) when the handle (2) is in the right side mounting position.

6. The door lock with the child lock function according to claim 5, wherein the handle (2) is sleeved with a handle reset torsion spring (6), the handle reset torsion spring (6) is provided with two pins, the mounting seat (1) is symmetrically provided with two mounting positions left and right, the mounting positions are detachably provided with positioning pieces, the handle (2) is provided with actuating pieces, and the positioning pieces and the actuating pieces are both positioned between the two pins.

7. Door lock with child lock function according to any of claims 4-6, characterized in that the inner peripheral wall of the connecting groove (30) is provided with a perforation (300) in radial direction, a pin (32) is slidably arranged in the perforation (300), and the connecting shaft (40) is provided with a connecting hole adapted to the pin (32) in radial direction;

when the pin shaft (32) is inserted into the connecting hole, the clutch sleeve (4) is in a locking state;

when the pin shaft (32) exits from the connecting hole, the clutch sleeve (4) is in a free state.

8. Door lock with child lock function according to claim 7, characterized in that two perforations (300) are provided and that two perforations (300) are circumferentially spaced 180 ° apart, the pressing block (31) being circumferentially located in the middle of two perforations (300).

9. Door lock with child lock function according to claim 7, characterized in that the mounting seat (1) is provided with a push plate (7) for driving the pin shaft (32) to slide along the perforation (300), the push plate (7) is provided with a pushing part, and the pushing part is provided with a pushing plane and pushing arc surfaces positioned at two sides of the pushing plane.

10. A door comprising a door body, characterized in that it further comprises a door lock with child-locking function according to any one of claims 1 to 9, said mounting seat (1) being fixedly mounted to said door body.