WO2016179843A1

WO2016179843A1 - Engaging and disengaging mechanism for door lock

Info

Publication number: WO2016179843A1
Application number: PCT/CN2015/079052
Authority: WO
Inventors: 彭爱民
Original assignee: 深圳市同创新佳科技有限公司
Priority date: 2015-05-12
Filing date: 2015-05-15
Publication date: 2016-11-17
Also published as: CN104895414B; CN104895414A

Abstract

An engaging and disengaging mechanism for a door lock, comprising a housing (10), an engaging and disengaging component (20) and a transmission component (30) being disposed in the housing (10), wherein the engaging and disengaging component (20) comprises a lower poking wheel (21) formed with lower wavy teeth, an upper poking wheel (22) formed with upper wavy teeth, an engaging and disengaging block spring (23), a first handle connecting block (24), a second handle connecting block (25), a first engaging and disengaging block (26) and a second engaging and disengaging block (27) disposed in a space cooperatively formed by the first handle connecting block (24) and the second handle connecting block (25), and a rotary shaft (28). The lower wavy teeth and the upper wavy teeth cooperate with each other. A through hole (29) is provided in the lower poking wheel (21) and the upper poking wheel (22) for communicating same. The first handle connecting block (24) is located in the through hole (29). The bottom end of the engaging and disengaging block spring (23) is embedded into the first engaging and disengaging block (26). The inner bottom wall of the housing (10) is provided with a first shaft hole (11), the bottom side of the upper poking wheel (22) is provided with a second shaft hole (221), and two ends of the rotary shaft (28) are inserted into the first shaft hole (11) and the second shaft hole (221) respectively. The transmission component (30) is in drive connection with the lower poking wheel (21).

Description

Clutch for door lock

Technical field

The invention relates to the technical field of locks, and in particular to a clutch mechanism for a door lock.

Background technique

At present, electronic locks have been widely used, and the electronic lock is generally provided with a clutch mechanism for controlling the opening and closing of the lock. The clutch mechanism used in various electronic locks on the existing market mainly has the following two technical problems: First, the clutch mechanism adopts a spring piece or an elastic metal ring as an actuator for performing clutching, and the shrapnel or metal is pulled up. Circle, thereby achieving the separation or seizure between the mechanisms, but as the use time of the electronic lock increases, the elastic force of the elastic piece or the metal ring is gradually deteriorated due to fatigue, and the elastic restoring force of the shrapnel or the metal ring is deteriorated, thereby Secondly, the clutch mechanism is generally controlled by a single motor. Once the clutch mechanism of the structure fails, the lock cannot be unlocked, and the violent unlocking is required in the later stage to directly cause the overall damage to the electronic lock. In summary, the structural design of the clutch mechanism of the existing electronic lock has obvious defects and poor use effect.

technical problem

The object of the present invention is to provide a clutch mechanism for a door lock with reasonable structural design, good clutching stability and long service life in view of the deficiencies of the prior art.

Problem solution

Technical solution

In order to solve the above technical problem, the technical solution of the present invention is: a clutch mechanism for a door lock, comprising a housing, wherein the housing is provided with a clutch assembly and a transmission assembly, and the clutch assembly includes a down dial formed with a lower wave tooth a moving wheel, an upper dialing wheel formed with upper wave teeth, a clutch spring, a first handle connecting block, a second handle connecting block, and a first clutch disposed in a space formed by the cooperation of the first handle connecting block and the second handle connecting block a block and a second clutch block and a rotating shaft, wherein the lower dialing tooth and the upper wave tooth cooperate with each other, and the lower dialing wheel and the upper dialing wheel are provided with a corresponding through hole, and the first handle connecting block is located in the through hole The bottom end of the clutch spring is embedded in the first clutch block, the inner bottom wall of the housing is provided with a first shaft hole, and the bottom side of the upper dial wheel is provided with a second shaft hole, The two ends of the rotating shaft are respectively inserted in the a first shaft hole and a second shaft hole; the transmission assembly is drivingly coupled to the lower dial wheel.

Preferably, the transmission assembly includes a motor, a coupling that is fitted to the main shaft of the motor, a slider shaft that is coupled to the coupling, and a slider and a slider spring that are fitted to the slider shaft, and the slider and the slider The lower dial wheel is connected.

Preferably, the lower side of the lower dial wheel is provided with a first U-shaped groove, and the side of the slider is provided with a cylinder that is coupled with the first U-shaped groove.

Preferably, a knob assembly is disposed outside the housing, and the knob assembly includes a knob, a knob handle, a lock head disposed in the knob, a lock platen, an upper dial, a lower dial, and a first large polygonal shaft rotation seat. a second large polygonal shaft rotating seat, a small polygonal shaft rotating seat, a shaft seat pressing plate, a first spring, a second spring, a large polygonal axis and a small polygonal shaft; one end of the lower dial plate is provided with a first column and a second column The knob handle is provided with an inner hole, the lower dial plate and the small polygonal shaft swivel are movably disposed in the inner hole, and the upper dial is rotatably attached to the lower dial One end is located in the inner hole, a central hole is formed in the middle of the upper dial, and two sides of the upper dial are provided with symmetric inclined bosses, and the lock is connected with the square hole; the lock plate Pressing between the upper dial and the lock head; the first large polygonal shaft rotating seat and the second large polygonal shaft rotating seat are all disposed in the inner hole, and the second large polygonal shaft is rotated One end of the seat is uniformly provided with four square slots for accommodating the first column and the second column, The other end of the large polygonal shaft swivel is uniformly provided with four U-shaped grooves, one end of the first large polygonal shaft rotating seat is provided with a first large polygonal hole, and the other end of the first large polygonal shaft rotating seat is provided with Four U-shaped tables with four U-shaped grooves cooperating; two ends of the first spring abut against the small polygonal shaft rotating seat and the lower dial, respectively; the shaft seat pressing plate is pressed against The first large polygonal shaft is pivoted and coupled to the knob handle; one end of the large polygonal shaft is connected to the second handle connecting block, and the other end of the large polygonal shaft is inserted in the first large polygonal hole The small polygonal axis is disposed on the large polygonal axis, one end of the small polygonal axis is connected to the second clutch block, and the other end of the small polygonal axis is connected to the small polygonal shaft rotating seat; the second spring sleeve Connected to the periphery of the small polygonal axis and located in the first large polygonal shaft turret and the second large polygonal shaft rotator that cooperate with each other.

Preferably, one end of the second handle connecting block is provided with a second large polygonal hole, and one end of the large polygonal shaft is inserted into the second large polygonal hole.

Preferably, one end of the connection of the second clutch block opens a first small polygonal hole, and the small polygonal axis rotates One end of the seat is provided with a second small polygonal hole, one end of the small polygonal axis is inserted into the first small polygonal hole, and the other end of the small polygonal axis is inserted into the second small polygonal hole.

Advantageous effects of the invention

Beneficial effect

The invention relates to a clutch mechanism for a door lock, which improves the structure of the clutch assembly, and controls the rotation of the first handle connecting block and the second handle connecting block by controlling the relative rotation of the matching upper and lower dialing wheels The rotation of the first clutch block and the second clutch block to achieve clutching. The clutch mechanism for door lock of the invention has good clutching stability, and can not cause clutch failure for long-term use, and can be used for controlling the lock of the electronic lock when applied to the electronic lock, and has a long service life.

Brief description of the drawing

DRAWINGS

FIG. 1 is a schematic structural view of Embodiment 1 of the present invention.

2 is a schematic structural view of a transmission assembly and a lower toggle wheel according to Embodiment 1 of the present invention.

FIG. 3 is a schematic structural view of a casing according to Embodiment 1 of the present invention.

4 is a schematic structural view of an upper dial wheel according to Embodiment 1 of the present invention.

FIG. 5 is a schematic exploded view of the structure of the first embodiment of the present invention.

FIG. 6 is a schematic structural diagram of Embodiment 2 of the present invention.

FIG. 7 is a schematic exploded view of a second embodiment of the present invention.

FIG. 8 is an exploded, isometric view of a knob assembly according to a second embodiment of the present invention.

Figure 9 is a schematic view showing the structure of a first large polygonal shaft swivel of the present invention.

Figure 10 is a schematic view showing the structure of a small polygonal shaft swivel of the present invention.

11 is a cross-sectional view showing the structure of the knob assembly of the second embodiment of the present invention after hiding the large polygon axis and the small polygon axis.

The reference numerals include:

10-housing 11-first shaft hole 12-axis

20-clutch assembly 21-lower shifting wheel 22-upper shifting wheel

23-clutch spring 24-first handle connection block 25-second handle connection block

26-first clutch block 27-second clutch block 28-rotation axis

29-perforation 30-drive assembly 31-motor

32-Coupling 33-slider shaft 34-slider

35-slide spring 40-knob assembly 41-knob

42-Upper plate 43-Lower plate 44-Second large polygonal shaft swivel

45-first large polygonal shaft swivel 46-small polygonal shaft swivel 47-large polygonal shaft

48-small polygonal shaft 211-first U-shaped groove 221-second shaft hole

251-Second large polygonal hole 271-First small polygonal hole 341-Cylinder

411-knob handle 412-lock 413-lock plate

414-inner hole 421-square hole 422-beveled boss

431-first column 432-second column 441-square groove

442-U-shaped groove 451-shaft seat pressure plate 452-second spring

453-U-shaped table 454-first large polygonal hole 461-first spring

462 - second small polygonal hole.

BEST MODE FOR CARRYING OUT THE INVENTION

The invention is described in detail below with reference to the accompanying drawings.

Embodiment 1:

As shown in FIG. 1 to FIG. 5, a clutch mechanism for a door lock of the present invention includes a housing 10 in which a clutch assembly 20 and a transmission assembly 30 are disposed, and the clutch assembly 20 includes a lower wave tooth. The dialing wheel 21, the upper dialing wheel 22 formed with the upper wave teeth, the clutch spring 23, the first handle connecting block 24, the second handle connecting block 25, and the first handle connecting block 24 are matched with the second handle connecting block 25. The first clutch block 26 and the second clutch block 27 and the rotating shaft 28 in the formed space, the lower dialing teeth and the upper wave teeth cooperate with each other, and the lower dialing wheel 21 and the upper dialing wheel 22 are provided with communicating through holes 29, The first handle connecting block 24 is located in the through hole 29, and the bottom end of the blocking spring 23 is embedded in the first clutch block 26. The inner bottom wall of the housing 10 is provided with a first shaft hole 11 and a bottom of the upper dialing wheel 22 A second shaft hole 221 is disposed on the side, and two ends of the rotating shaft 28 are respectively inserted into the first shaft hole 11 and the second shaft hole 221; the transmission assembly 30 is drivingly connected with the lower dial wheel 21.

In the initial state, when the first handle connecting block 24 rotates, only the first clutch block 26 and the first handle connecting block 24 are rotated, and the second clutch block 27 is idling. When the transmission assembly 30 is energized and rotated, the lower toggle can be driven The wheel 21 rotates at a certain angle, and the lower wave tooth and the upper wave tooth of the upper dial wheel 22 work with each other to push the upper dial wheel 22 to move a certain distance in the axial direction B, and the top and upper wave teeth of the lower wave tooth The tops of the teeth are in contact. The upper dialing wheel 22 moves in the axial direction B, thereby driving the first clutch block 26 to move in the axial direction B, the first clutch block 26 is engaged with the second clutch block 27, and the clutch spring 23 in contact therewith is compressed. Pre-pressure, when the first handle connecting block 24 rotates, the first clutch block 26 and the second handle connecting block 25 are rotated, and the second clutch block 27 is also rotated together to realize unlocking. After the unlocking is completed, after waiting for a certain time, the transmission assembly 30 is reversed. Similarly, the lower dialing wheel 21 is driven to rotate in the reverse direction, and the top of the lower wave tooth is disengaged from the top of the upper wave tooth, and the upper dialing wheel 22 is disengaged. And the first clutch block 26 moves in the opposite direction of the axial direction and B under the pre-pressure of the clutch spring 23, and the tooth top of the lower wave tooth cooperates with the tooth bottom of the upper wave tooth, and the tooth bottom and the upper wave tooth The crests of the wave teeth have no gaps, and the first clutch block 26 is separated from the second clutch block 27 and returns to the initial state.

Wherein, when the lower dial wheel 21 rotates, the upper dialing wheel 22 is limited by the rotating shaft 28 to achieve circumferential rotation, and only axial movement can be achieved.

In addition, the lower toggle tooth and the upper wave tooth can be used without a clearance fit.

The present invention improves the structure of the clutch assembly 20, and controls the rotation of the first handle connecting block 24 and the second handle connecting block 25 and the first clutch block by controlling the relative rotation of the mating upper dialing wheel 22 and the lower dialing wheel 21. 26 is rotated with the second clutch block 27 to effect clutching. The clutch mechanism for door lock of the invention has good clutching stability, and can not cause clutch failure for long-term use, and can be used for controlling the lock of the electronic lock when applied to the electronic lock, and has a long service life.

In the present embodiment, the transmission assembly 30 includes a motor 31, a coupling 32 that is fitted to the main shaft of the motor 31, a slider shaft 33 that is coupled to the coupling 32, and a slider 34 and a slider spring that are fitted to the slider shaft 33. 35. The slider 34 is connected to the lower dial wheel 21. Specifically, when the motor 31 is energized to rotate, the coupling 32 rotates following the main shaft of the motor 31 and pushes against the rotation of the slider shaft 33. The slider shaft 33 pushes the slider spring 35 along the slider shaft 33 during the rotation. The axis moves linearly. When the slider 34 moves linearly along the axis, the slider 34 can drive the lower dialing wheel 21 to rotate by a certain angle to drive the rotation of the lower dialing wheel 21.

In this embodiment, a first U-shaped groove 211 is defined in a peripheral edge of the lower dialing wheel 21, and a side of the slider 34 is provided with a cylinder 341 that is coupled to the first U-shaped groove 211. Specifically, when the slider 34 moves linearly along the axis, the cylinder 341 on the slider 34 drives the lower dialing wheel 21 to rotate at a certain angle in the first U-shaped groove 211 to realize driving. The rotation of the lower dial wheel 21 is performed.

Embodiment 2:

As shown in FIG. 6 to FIG. 8 and FIG. 11 , the difference between the embodiment and the first embodiment is that a knob assembly 40 is disposed outside the housing 10 , and the knob assembly 40 includes a knob 41 , a knob handle 411 , and is disposed in the knob 41 . The lock head 412, the lock head plate 413, the upper dial plate 42, the lower dial plate 43, the first large polygonal shaft swivel 45, the second large polygonal shaft swivel 44, the small polygonal shaft swivel 46, the shaft seat press plate 451, a spring 461, a second spring 452, a large polygonal shaft 47 and a small polygonal shaft 48; one end of the lower dial 43 is provided with a first column 431 and a second column 432, and the knob handle 411 is provided with an inner hole 414, and the lower dial 43 The small polygonal shaft swivel 46 is movably disposed in the inner hole 414, and the upper dial 42 is rotatably attached to the other end of the lower dial 43 and located in the inner hole 414, the middle of the upper dial 42 A square hole 421 is defined, and two sides of the upper dial 42 are provided with a symmetrical inclined boss 422, and the lock head 412 is connected with the square hole 421; the lock platen 413 is pressed against the lock 412 and is located on the upper dial 42 and the lock Between 412; the first large polygonal shaft swivel 45 and the second large polygonal shaft swivel 44 are disposed in the inner hole 414, and the second large polygonal shaft swivel 4 4 is uniformly disposed at one end of the square groove 441 for accommodating the first column 431 and the second column 432, and the other end of the second large polygonal shaft rotator 44 is uniformly provided with four U-shaped grooves 442, One end of the large polygonal shaft rotator 45 is provided with a first large polygonal hole 454, the other end of the first large polygonal shaft rotator 45 is provided with four U-shaped 453 mating with the four U-shaped grooves 442; The two ends of the first spring 461 abut against the small polygonal shaft rotating seat 46 and the lower dial 43 respectively; the shaft seat pressing plate 451 is pressed against the first large polygonal shaft rotating seat 45 and connected with the knob handle 411; One end is connected to the second handle connecting block 25, the other end of the large polygonal shaft 47 is inserted into the first large polygonal hole 454; the small polygonal shaft 48 is disposed on the large polygonal shaft 47, and one end of the small polygonal shaft 48 is coupled to the second. The block 27 is connected, the other end of the small polygonal shaft 48 is connected to the small polygonal shaft swivel 46; the second spring 452 is sleeved on the outer periphery of the small polygonal shaft 48 and is located on the first large polygonal shaft swivel 45 and the first mating The two large polygonal shafts are rotated into the seat 44.

In the initial state, when the mechanical key control lock 412 is rotated, the upper dial 42 follows the rotation, and the inclined boss 422 of the upper dial 42 presses the lower dial 43 to move in the opposite direction of B in the axial direction. Two of the U-shaped grooves 442 provided on the two large polygonal shaft seats 44 are aligned with the first column 431 and the second column 432 on the lower dial 43 so that the first column 431 and the second column 432 are inserted and aligned therewith. In the two U-shaped grooves 442, at the same time, the first spring 461 is compressed to generate a pre-pressure, and then the knob assembly 40 is rotated, because the lower dial 43 is only axially movable and disposed in the knob handle 411, that is, when the knob handle 411 is rotated At the time, the lower dial 43 will also follow, the second largest multilateral The shaft pivot 44 is also rotated, and the first large polygonal shaft swivel 45 is rotated along with the second large polygonal shaft swivel 44, and the large polygonal shaft 47 connected to the first large polygonal shaft swivel 45 is also rotated. Unlocking, unlocking the mechanical key of the electronic lock.

When the lock head 412 is rotated, the lower dial 43 is moved in the opposite direction to the axial direction B. At this time, if the four U-shaped grooves 442 of the second large polygonal shaft swivel 44 are both the first post 431 of the lower dial 43 If the second post 432 is not aligned, the first post 431 and the second post 432 cannot be inserted into the U-shaped slot 442, and the first post 431 and the second post 432 are placed against the second large polygonal shaft swivel 44 Moving in the opposite direction of B, the second spring 452 compresses to produce a pre-pressure. Then, the knob assembly 40 is rotated, and the lower dial 43 follows the rotation. When the lower dial 43 follows a certain angle, the U-shaped groove 442 of the second large polygonal shaft swivel 44 and the first post 431 and the second post of the lower dial 43 are rotated. When the 432 is aligned, the second large polygonal shaft yoke 44 is moved in the axial direction B under the preload of the second spring 452, and the first column 431 and the second column 432 are inserted into the second large polygonal shaft yoke 44 aligned therewith. In the two U-shaped grooves 442, the knob assembly 40 is continuously rotated, and the lower dial 43 continues to follow the rotation, and the second large polygonal shaft swivel 44 also rotates, and the first large polygonal shaft swivel 45 follows the second. The large polygonal shaft swivel 44 rotates, and the large polygonal shaft 47 connected to the first large polygonal shaft swivel 45 also rotates to complete the unlocking, that is, the mechanical key unlocking of the electronic lock is realized.

After the unlocking is completed, the mechanical key is rotated in the reverse direction, and the upper dial 42 also follows the reverse rotation. The lower dial 43 is moved in the axial direction B under the pre-pressure generated by the compression of the first spring 461 to complete the reset, followed by the first post 431 and the second post 432 of the lower dial 43 and the second large polygonal shaft swivel 44. The U-shaped groove 442 is disengaged. At this time, the knob assembly 40 is rotated, the lower dial 43 follows the rotation, and the second large polygonal shaft swivel 44 cannot be rotated. The large polygonal shaft 47 connected to the first large polygonal shaft swivel 45 cannot be Turning, unlocking is not possible.

By adding the knob assembly 40 of the embodiment, the mechanical key can be unlocked. When the transmission component 30 fails, the user can quickly use the mechanical key to unlock the operation, ensuring that the electronic lock is more secure, and avoiding the failure of the transmission assembly 30. Violent unlocking, reasonable structural design and practicality.

In this embodiment, one end of the second handle connecting block 25 is provided with a second large polygonal hole 251, and one end of the large polygonal shaft 47 is inserted into the second large polygonal hole 251. Specifically, the two ends of the large polygonal shaft 47 are respectively restricted by the second large polygonal hole 251 and the first large polygonal hole 454 opened by the second handle connecting block 25, so that the rotation of the first large polygonal shaft rotating seat 45 can be driven. The two-handle connection block 25 is rotated.

In this embodiment, one end of the second clutch block 27 is connected to open a first small polygonal hole 271, and a small polygonal axis A second small polygonal hole 462 is defined in one end of the rotary seat 46. One end of the small polygonal shaft 48 is inserted into the first small polygonal hole 271, and the other end of the small polygonal shaft 48 is inserted into the second small polygonal hole 462. Specifically, the two ends of the small polygonal shaft 48 are respectively restricted by the first small polygonal hole 271 and the second small polygonal hole 462, so that the rotation of the small polygonal shaft rotating seat 46 can drive the second clutch block 27 to rotate.

The rest of the embodiment is the same as that of the first embodiment. The features that are not explained in the embodiment are explained in the first embodiment, and details are not described herein.

From the above, it can be seen that the present invention has the above-described excellent characteristics, and it has practicality in use, which has improved performance in the prior art, and has become a practical product.

The above content is only a preferred embodiment of the present invention, and those skilled in the art will have a change in the specific embodiment and application scope according to the idea of the present invention. The content of the present specification should not be construed as the present invention. limits.

Claims

A clutch mechanism for a door lock includes a housing (10), and a clutch assembly (20) and a transmission assembly (30) are disposed in the housing (10), characterized in that the clutch assembly (20) includes formation a lower toggle wheel (21) having lower wave teeth, an upper toggle wheel (22) formed with upper wave teeth, a clutch spring (23), a first handle connection block (24), and a second handle connection block (25) a first clutch block (26) and a second clutch block (27) and a rotating shaft (28) disposed in a space formed by the cooperation of the first handle connecting block (24) and the second handle connecting block (25), the lower The dialing teeth and the upper wave teeth cooperate with each other, and the lower dialing wheel (21) and the upper dialing wheel (22) are provided with communicating through holes (29), and the first handle connecting block (24) is located at the through hole (29) The bottom end of the clutch spring (23) is embedded in the first clutch block (26), and the inner bottom wall of the housing (10) is provided with a first shaft hole (11), the upper portion A second shaft hole (221) is disposed on a bottom side of the dial wheel (22), and two ends of the rotating shaft (28) are respectively inserted into the first shaft hole (11) and the second shaft hole (221) The transmission assembly (30) is drivingly coupled to the lower toggle wheel (21).
A clutch mechanism for a door lock according to claim 1, wherein said transmission assembly (30) comprises a motor (31), a coupling (32) of a spindle fitted to the motor (31), and a coupling. a slider rotating shaft (33) connected to the shaft (32) and a slider (34) and a slider spring (35) fitted to the slider rotating shaft (33), the slider (34) and the lower dialing wheel (21) Connection.
The clutch mechanism for a door lock according to claim 2, characterized in that: the first U-shaped groove (211) is opened on the peripheral side of the lower dialing wheel (21), and the slider (34) The side is provided with a cylinder (341) that is mated with the first U-shaped groove (211).
The clutch mechanism for a door lock according to claim 1, wherein the housing (10) is provided with a knob assembly (40), and the knob assembly (40) comprises a knob (41) and a knob handle. (411), a lock head (412) disposed in the knob (41), a lock platen (413), an upper dial (42), a lower dial (43), a first large polygonal shaft swivel (45), The second largest polygonal shaft swivel (44), small polygonal shaft swivel (46), a shaft seat plate (451), a first spring (461), a second spring (452), a large polygonal axis (47), and a small polygonal shaft (48);

One end of the lower dial (43) is provided with a first column (431) and a second column (432), the knob handle (411) is provided with an inner hole (414), the lower dial (43), a small polygonal shaft swivel (46) is movably disposed in the inner hole (414), and the upper dial (42) is rotatably attached to the other end of the lower dial (43) and located at the In the inner hole (414), a square hole (421) is defined in a middle portion of the upper dial plate (42), and symmetric bevel bosses (422) are disposed on both sides of the upper dial plate (42), and the lock head ( 412) is connected to the square hole (421);

The lock platen (413) is pressed against the lock head (412) and located between the upper dial (42) and the lock head (412);

The first large polygonal shaft rotating seat (45) and the second large polygonal shaft rotating seat (44) are all disposed in the inner hole (414), and the second large polygonal shaft rotating seat (44) is uniformly disposed at one end. There are four square slots (441) for accommodating the first column (431) and the second column (432), and the other end of the second large polygonal shaft rotator (44) is uniformly provided with four U-shaped grooves ( 442), one end of the first large polygonal shaft rotating seat (45) is provided with a first large polygonal hole (454), and the other end of the first large polygonal shaft rotating seat (45) is provided with four of the U-shaped Four U-shaped tables (453) in which the slots (442) cooperate with each other;

The two ends of the first spring (461) abut against the small polygonal shaft swivel (46) and the lower dial (43);

The shaft seat platen (451) is pressed against the first large polygonal shaft swivel (45) and connected to the knob handle (411);

One end of the large polygonal shaft (47) is connected to the second handle connecting block (25), and the other end of the large polygonal shaft (47) is inserted into the first large polygonal hole (454);

The small polygonal axis (48) is disposed on the large polygonal axis (47), one end of the small polygonal axis (48) is connected to the second clutch block (27), and the other end of the small polygonal axis (48) is The small polygonal shaft swivel (46) is connected;

The second spring (452) is sleeved on the periphery of the small polygonal shaft (48) and is located in the first large polygonal shaft swivel (45) and the second large polygonal shaft swivel (44) that cooperate with each other.
The clutch mechanism for a door lock according to claim 4, wherein one end of the second handle connecting block (25) is provided with a second large polygonal hole (251), and the large polygonal shaft (47) One end is inserted into the second large polygonal hole (251).
The clutch mechanism for a door lock according to claim 4, wherein one end of the second clutch block (27) is connected with a first small polygonal hole (271), and the small polygonal shaft is rotated (46). a second small polygonal hole (462) is opened at one end thereof, one end of the small polygonal axis (48) is inserted into the first small polygonal hole (271), and the other end of the small polygonal axis (48) is The second small polygonal hole (462) is inserted.