CN211776556U - Door lock - Google Patents

Abstract

The embodiment of the application provides a door lock, including casing, knob spare, first gear, rack and second gear, the casing is provided with the mounting hole and holds the chamber, and the mounting hole runs through the casing and the intercommunication holds the chamber, and knob spare rotates to set up and stretches into in mounting hole and part and hold the chamber, and first gear and knob spare transmission cooperation and rotation set up in holding the intracavity. The rack is meshed with the first gear and is arranged in the containing cavity in a sliding mode, the rack is driven by the first gear to move, and the second gear is meshed with the rack and is used for driving the lock core to rotate. The door lock that this application embodiment provided forms the transmission through first gear, rack and second gear, when the user screwed knob spare, through the motion drive second gear rotation of rack and realize unblanking, the knob spare only need rotate the unblock operation that less angle just can realize the second gear, improves the convenience of unblock.

Description

Door lock

Technical Field

The application relates to the field of anti-theft safety, in particular to a door lock.

Background

Along with the continuous development of intelligent lock, the function of intelligent lock can constantly increase, for example face identification, doorbell, visual screen, full-automatic or semi-automatic lock, this type of lock sets up knob switch usually for unblank with the manual mode indoor or outdoor, and current knob switch's stroke is very long, need be used for rotating several circles in succession just can realize the unblock, and the unblock is convenient inadequately.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a door lock, so that unlocking of the door lock is more convenient.

The embodiment of the application provides a door lock, including casing, knob spare, first gear, rack and second gear, the casing is provided with the mounting hole and holds the chamber, and the mounting hole runs through the casing and the intercommunication holds the chamber, and knob spare rotates to set up and stretches into in mounting hole and part and hold the chamber, and first gear and knob spare transmission cooperation and rotation set up in holding the intracavity. The rack is meshed with the first gear and is arranged in the containing cavity in a sliding mode, the rack is driven by the first gear to move, and the second gear is meshed with the rack and is used for driving the lock core to rotate.

In some embodiments, the knob member includes a knob rotatably mounted to the mounting hole and a knob shaft. The knob shaft is connected to the knob, extends into the accommodating cavity and penetrates through the first gear, and is relatively fixed with the first gear.

In some embodiments, the knob member further includes a supporting plate, the supporting plate is provided with a through hole, the knob shaft passes through the through hole, the first gear and the knob are respectively located at two sides of the supporting plate, and the supporting plate is fixed to the housing.

In some embodiments, the knob member further comprises a return member for returning the knob shaft.

In some embodiments, the knob part further includes a clamp spring, a clamp spring groove is formed in the knob shaft, the clamp spring is embedded in the clamp spring groove, and the clamp spring is located on one side, away from the knob, of the first gear and abuts against the first gear.

In some embodiments, the housing is provided with a guide mechanism for the rack.

In some embodiments, the guide mechanism comprises a guide block, the guide block is arranged on the shell, the rack is provided with a guide groove matched with the guide block, and the guide block is slidably embedded into the guide groove.

In some embodiments, the rack includes a first tooth portion, a second tooth portion, and a guide portion, the first tooth portion and the second tooth portion are respectively connected to both ends of the guide portion, the guide groove is provided in the guide portion, the first tooth portion is engaged with the first gear, and the second tooth portion is engaged with the second gear.

In some embodiments, the first gear has a greater number of teeth than the second gear.

In some embodiments, the second gear is provided with a fixing hole for the lock cylinder to pass through, and the fixing hole is arranged along the axial direction of the second gear.

The door lock that this application embodiment provided forms the transmission through first gear, rack and second gear, when the user screwed knob spare, through the motion drive second gear rotation of rack and realize unblanking, the knob spare only need rotate the unblock operation that less angle just can realize the second gear, improves the convenience of unblock.

These and other aspects of the present application will be more readily apparent from the following description of the embodiments.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a door lock provided in an embodiment of the present application;

FIG. 2 is a cross-sectional view of a housing of a door lock provided in an embodiment of the present application;

FIG. 3 is a schematic view of a knob member of a door lock according to an embodiment of the present application;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 5 is a schematic structural diagram of a knob member according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a first gear according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a second gear according to an embodiment of the present disclosure;

fig. 8 is a partial structural schematic diagram of a door lock provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Along with the continuous development of intelligent lock, the function of intelligent lock can constantly increase, for example face identification, doorbell, visual screen, full-automatic or semi-automatic lock, this type of lock sets up knob switch usually, and present knob switch adopts the shift fork structure more, and during the use, the user need twist many circles of knobs in succession soon and can realize the unblock, and the operation is comparatively troublesome. Therefore, the inventor proposes the door lock in the embodiment of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, the present embodiment provides a door lock 10, including a housing 100, a knob member 200, a first gear 300, a rack 500 and a second gear 400, where the housing 100 is provided with a mounting hole 101 and an accommodating cavity 102, the mounting hole 101 penetrates through the housing 100 and communicates with the accommodating cavity 102, the knob member 200 is rotatably disposed in the mounting hole 101 and partially extends into the accommodating cavity 102, and the first gear 300 is in transmission fit with the knob member 200 and rotatably disposed in the accommodating cavity 102. The rack 500 is engaged with the first gear 300 and slidably disposed in the accommodating cavity 102, the rack 500 is driven by the first gear 300 to move, and the second gear 400 is engaged with the rack 500 and is used for driving the lock cylinder to rotate.

Referring to fig. 2, the housing 100 is a substantially rectangular frame structure, and the housing 100 includes a bottom plate 110 and a side plate 120, the side plate 120 is connected to an edge of the bottom plate 110 and encloses an accommodating cavity 102, and the accommodating cavity 102 can accommodate other components. The base plate 110 includes opposing first and second surfaces 111 and 112, respectively. The first surface 111 may be an outer surface of the door lock 10, and the second surface 112 may be provided to face the door body, and the side plate 120 and the bottom plate 110 may protrude toward one side of the second surface 112.

The housing 100 further defines a mounting hole 101, the mounting hole 101 penetrates the bottom plate 110, i.e. penetrates the first surface 111 and the second surface 112, in this embodiment, the cross section of the mounting hole 101 is circular, and the mounting hole 101 can be used for mounting the knob member 200. In some embodiments, the mounting hole 101 is a stepped hole that opens on a side near the second surface 112 in a manner that facilitates securing the knob member 200.

In some embodiments, the housing 100 is further provided with a boss 130, the boss 130 is disposed on the second surface 112 and surrounds the mounting hole 101, the boss 130 protrudes from the second surface 112 and surrounds the mounting hole 101, and the boss 130 can serve as a limit for the knob member 200 mounted in the mounting hole 101 and position the knob member 200. It will be appreciated that in some embodiments, other configurations may be provided for positioning the knob member 200. In this embodiment, the second surface 112 is provided with a mounting platform (not shown) protruding from the second surface 112, the mounting platform being of a substantially hollow structure and being used for the arrangement of the second gear 400.

Referring to fig. 3, the knob member 200 is used for a user to unlock the lock by screwing, and is disposed on the housing 100 and exposed from the first surface 111, a portion of the first surface 111 is exposed for the user to operate, and a portion of the knob member 200 extends into the accommodating cavity 102 from the mounting hole 101 to form a transmission with other components.

Referring to fig. 3 and 4, as an embodiment, the knob member 200 includes a knob 210 and a knob shaft 220, wherein the knob 210 is for being screwed by a user and may be configured to be screwed by a finger of the user. The knob shaft 220 is connected to the knob 210, and the knob shaft 220 is extended into the receiving cavity 102 and used for the first gear 300 connection. The knob shaft 220 protrudes into the mounting hole 101 and is in clearance fit with the base plate 110, so that the knob shaft 220 and the knob 210 can rotate relative to the base plate 110, as a way, the knob 210 can close the mounting hole 101 from the first surface 111 side just to improve the appearance consistency of the door lock 10.

Referring to fig. 4 and 5, the knob shaft 220 passes through the mounting hole 101, and at least a portion of the knob shaft 220 extends into the accommodating cavity 102, and the portion extending into the accommodating cavity 102 is used for connecting and forming transmission with the first gear 300. In this embodiment, the knob shaft 220 is provided with a clamp spring groove 221, the clamp spring groove 221 is formed in the outer wall of the knob shaft 220 along the circumferential direction of the knob shaft 220, and the clamp spring groove 221 can be provided with a clamp spring 240.

Referring again to fig. 3, in some embodiments, the knob member 200 further includes a snap spring 240, and the snap spring 240 is engaged with the snap spring groove 221 and is used for limiting the first gear 300 in the axial direction of the knob shaft 220.

In some embodiments, the knob member 200 may further include a support plate 230, the support plate 230 is plate-shaped and is received in the receiving cavity 102, and the knob shaft 220 is fixed by the support plate 230 after extending into the mounting hole 101. Specifically, the support plate 230 is provided with a through hole 231, and the through hole 231 corresponds to the mounting hole 101 so that the knob shaft 220 can be inserted into the through hole 231. The support plate 230 may be fixed to the housing 100, for example, in the embodiment, the support plate 230 is fixed to a surface of the boss 130 away from the second surface 112, and the support plate 230 may be fixed to the housing 100 by screws or other methods. The support plate 230 may be used to support the first gear 300, and the latch groove 221 is provided at a portion of the knob shaft 220 passing through and protruding the through hole 231.

Referring to fig. 4 again, the first gear 300 is sleeved on the knob shaft 220, the outer edge of the first gear 300 is disposed on the convex teeth, and the first gear 300 is located between the snap spring 240 and the knob 210, more specifically, in the present embodiment, the first gear 300 is located between the snap spring 240 and the supporting plate 230, and the snap spring 240 is located on a side of the first gear 300 away from the knob 210 and abuts against the first gear 300, so that the first gear 300 is positioned by the snap spring 240 and the supporting plate 230 in the axial direction of the knob shaft 220, and the first gear 300 is prevented from sliding along the axial direction of the knob shaft 220. It is understood that in some other embodiments, the clamp spring 240 and the clamp spring groove 221 may not be provided, and the first gear 300 may be fixed in other manners.

Referring to fig. 6, in the process of screwing the knob 210 by a user, the knob shaft 220 rotates and drives the first gear 300 to rotate, and in order to prevent the knob shaft 220 and the first gear 300 from slipping, the first gear 300 may be sleeved on the knob shaft 220 in an interference manner. As an implementation manner, in this embodiment, the knob shaft 220 is provided with a sliding groove 222, the sliding groove 222 is provided with an outer wall of the knob shaft 220 along an axial direction of the knob shaft 220, the sliding groove 222 penetrates through an end portion of the knob shaft 220, which is far away from the knob 210, the first gear 300 is provided with a sliding block 310, the sliding block 310 is provided along a radial direction of the first gear 300 and can be slidably inserted into the sliding groove 222, at this time, because the sliding block 310 is inserted into the sliding groove 222, relative rotation between the first gear 300 and the rotating shaft does not occur, that is, slipping can be prevented.

In other embodiments, the first gear 300 and the knob shaft 220 may be prevented from slipping in other manners, for example, the sliding groove 222 may be disposed on the first gear 300, and the sliding block 310 may be disposed on the knob shaft 220. The first gear 300 and the knob shaft 220 may be locked by other locking pins or the like to prevent relative sliding.

During the process of turning knob 210, it is sometimes desirable to effect a reset of knob 210 after unlocking, and thus in some embodiments, knob piece 200 also includes a return 700 for returning knob shaft 220. The restoring member 700 serves to restore the knob 210 to the original state when the external force (the force of the user screwing the knob 210) is removed.

Referring to fig. 4 again, the restoring member 700 may be disposed in various forms, in some embodiments, the restoring member 700 may be a torsion spring, the restoring member 700 is sleeved on the knob shaft 220, and the restoring member 700 is fixed with the housing 100 or the supporting plate 230.

In some embodiments, referring to fig. 3, the supporting plate 230 may be provided with a protrusion 232, the protrusion 232 is located on a side of the supporting plate 230 away from the second surface 112, the number of the protrusions 232 may be one, two, or more, and the plurality of protrusions 232 may be arranged in a staggered manner. The protrusion 232 is used for installing and fixing the restoring member 700, and specifically, two torsion arms as torsion springs of the restoring member 700 are respectively connected to one protrusion 232. When the knob 210 drives the knob shaft 220 to rotate, the torsion spring is twisted to generate deformation, and when the external force disappears, the torsion spring recovers the deformation to drive the knob 210 to return to the initial position. It is understood that in other embodiments, the restoring member 700 may be an elastic rubber or the like, which may be compressed to generate a restoring force when the knob 210 is screwed.

Referring to fig. 7 and 8, the second gear 400 is used for matching the lock cylinder and driving the lock cylinder to rotate, so that the door lock 10 is opened or closed during the rotation of the lock cylinder. The second gear 400 is rotatably disposed on the housing 100, and a rotation axis of the second gear 400 is substantially parallel to a rotation axis of the first gear 300 and perpendicular to the second surface 112.

In this embodiment, the second gear 400 includes a tooth-engaging portion 420 and a mounting shaft 410, the tooth-engaging portion 420 is disposed on an outer wall of the mounting shaft 410 and protrudes from the mounting shaft 410, and the tooth-engaging portion 420 is located at a substantially middle position of the mounting shaft 410. One end of the mounting shaft 410 is fixedly inserted into the hollow portion of the mounting table, and the mounting shaft 410 can rotate relative to the mounting table. The center of the mounting shaft 410 is provided with a fixing hole 411, the fixing hole 411 is used for combining with a lock cylinder, and the fixing hole 411 is a square hole, for example.

Referring to fig. 8 again, the rack 500 is slidably disposed in the accommodating cavity 102 and forms a transmission with the first gear 300 and the second gear 400. In this embodiment, the rack 500 slides along the second surface 112, and the sliding direction is substantially parallel to the second surface 112. The rack 500 is engaged with both the first gear 300 and the second gear 400, and serves to form a transmission between the first gear 300 and the second gear 400. And when the first gear 300 rotates, the driving rack 500 slides, thereby driving the second gear 400 to rotate.

In one embodiment, the rack 500 is an elongated shape, the rack 500 includes a first tooth portion 510, a second tooth portion 520, and a guide portion 530, the first tooth portion 510 and the second tooth portion 520 are respectively connected to both ends of the guide portion 530, wherein the first tooth portion 510 is engaged with the first gear 300, and the second tooth portion 520 is engaged with the second gear 400. The guide 530 may be provided with no or no engaging teeth. As an embodiment, the tooth pitches and the like of the first tooth portion 510 and the second tooth portion 520 may be equal, and the number of teeth may be equal, which is beneficial to processing the rack 500, and at the same time, it is not necessary to distinguish the first tooth portion 510 from the second tooth portion 520 during assembly, so as to reduce the assembly difficulty, and the tooth pitches and the number of teeth of the first tooth portion 510 and the second tooth portion 520 are the same, so that the gear ratio of the rack 500 in the first tooth portion 510 and the second tooth portion 520 during transmission may be 1:1, and it is more convenient to adjust the gear ratio of the first gear 300 and the second gear 400 by adjusting the number of teeth of the first gear 300 and the second gear 400.

In order to slide the rack 500 according to a predetermined trajectory when moving, in some embodiments, the housing 100 is provided with a guide mechanism 600 for guiding the rack 500. The guide mechanism 600 is used to define a movement locus of the rack 500 or to define a sliding direction of the rack 500. Wherein the guiding mechanism 600 can cooperate with the guiding portion 530 to achieve the guiding function of the rack 500.

As an embodiment, the guide mechanism 600 includes a guide block 610, the guide block 610 may be disposed in a bar shape, and the guide block 610 may be disposed along the second surface 112 and diffract along the predetermined sliding direction of the rack 500, the guide block 610 is disposed on the housing 100 and located on the second surface 112, the guide block 610 may enclose a groove for the rack 500 to slide, so that the rack 500 slides in the groove to form a guide, in which case the guide block 610 may be one, two or more. In some embodiments, the guide part 530 is provided with a guide groove facing the second surface 112, and the guide block 610 is inserted into the guide groove, which is formed along the extending direction of the guide block 610 when the rack 500 slides, thereby performing a guide function. Similarly, the number of the guide blocks 610 may be one, two or more, and the number of the guide grooves may be matched with the number of the guide blocks 610.

In other embodiments, a guide slot may be provided in the first tooth portion 510 and/or the second tooth portion 520, which can also guide the movement of the rack 500. The guide mechanism 600 may be provided in the form of a groove, and in this case, the rack 500 may be provided with a guide block 610 to which the guide mechanism 600 is engaged.

To further limit the ability of the rack 500 to slide against the second surface 112 at all times, in some embodiments, the second surface 112 of the housing 100 can also be provided with a retention post 150, and the retention post 150 can be provided with a screw, a pressure plate, or the like to press the rack 500 against the second surface 112.

In view of the above, the first tooth 510 is engaged with the first gear 300, and the second tooth 520 is engaged with the second gear 400, so as to further reduce the angle of the user for screwing the knob 210 during unlocking and achieve the purpose of quick unlocking, in this embodiment, the number of teeth of the first gear 300 is greater than the number of teeth of the second gear 400. The advantages of such an arrangement are: when the first gear 300 rotates, the rotation angle of the second gear 400 is larger than that of the first gear 300. Therefore, when the first gear 300 rotates by a smaller angle, the second gear 400 can rotate by a larger angle, so that the knob 210 does not need to rotate by a large angle or even rotate for multiple turns to unlock.

The operation principle of the door lock 10 provided by the present embodiment is as follows: when a user needs to unlock the lock, the knob 210 is screwed, at the moment, the knob 210 drives the knob shaft 220 to rotate, the return piece 700 is compressed, the knob shaft 220 drives the first gear 300 to rotate, the first gear 300 drives the rack 500 to slide towards the second gear 400, the rack 500 drives the second gear 400 to rotate, and the second gear 400 can drive the lock core to rotate so as to realize unlocking; when the external force disappears, the restoring member 700 restores the knob shaft 220 and the knob 210 restores the original position. And the first gear 300, the rack 500 and the second gear 400 are all restored to the original position, the key cylinder can be simultaneously restored to the original position.

It should be noted that, although not shown in this embodiment, the door lock 10 provided in this embodiment may further include a handle, a lock cylinder, and other structures, and further may further include a biological information recognition module, a human-computer interaction interface, a processor, and other devices, where the biological information recognition module is used to collect or recognize biological characteristic information of a user, and the biological characteristic information may be, for example, various types of biological characteristic information such as fingerprint information, iris information, facial characteristic information, vein information, and the like.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A door lock, comprising:

the mounting hole penetrates through the shell and is communicated with the accommodating cavity;

the knob piece is rotatably arranged in the mounting hole and partially extends into the accommodating cavity;

the first gear is in transmission fit with the knob piece and is rotatably arranged in the accommodating cavity;

the rack is meshed with the first gear and is arranged in the accommodating cavity in a sliding mode, and the rack is driven by the first gear to move; and

and the second gear is meshed with the rack and is used for driving the lock cylinder to rotate.

2. The door lock of claim 1, wherein the knob member comprises:

the knob is rotatably arranged in the mounting hole;

the knob shaft is connected to the knob, extends into the accommodating cavity and penetrates through the first gear, and is relatively fixed with the first gear.

3. The door lock of claim 2, wherein the knob member further includes a support plate, the support plate is provided with a through hole, the knob shaft passes through the through hole, the first gear and the knob are respectively located at two sides of the support plate, and the support plate is fixed to the housing.

4. The door lock of claim 2 or 3, wherein the knob member further comprises a restoring member for restoring the knob shaft.

5. The door lock according to claim 2 or 3, wherein the knob member further comprises a clamp spring, a clamp spring groove is formed in the knob shaft, the clamp spring is embedded in the clamp spring groove, and the clamp spring is located on one side of the first gear, which is far away from the knob, and abuts against the first gear.

6. A door lock according to claim 1, wherein the housing is provided with a guide mechanism for the rack bar.

7. The door lock according to claim 6, wherein the guide mechanism includes a guide block provided to the housing, and the rack is provided with a guide groove engaged with the guide block, and the guide block is slidably fitted into the guide groove.

8. The door lock according to claim 7, wherein the rack bar includes a first tooth portion, a second tooth portion, and a guide portion, the first tooth portion and the second tooth portion are connected to both ends of the guide portion, respectively, the guide groove is provided in the guide portion, the first tooth portion is engaged with the first gear, and the second tooth portion is engaged with the second gear.

9. The door lock of claim 1, wherein the first gear has a greater number of teeth than the second gear.

10. The door lock according to claim 1, wherein the second gear is provided with a fixing hole for passing the lock cylinder therethrough, and the fixing hole is provided along an axial direction of the second gear.

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