CN211201390U

CN211201390U - Lockset with knob device

Info

Publication number: CN211201390U
Application number: CN201921653132.9U
Authority: CN
Inventors: 沈汉标; 王妙玉; 童威云; 杨思民; 刘健; 林立新
Original assignee: Guangdong Ketyoo Intelligent Technology Co Ltd
Current assignee: Guangdong Hotata Smart Home Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-08-07
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses a lock with a knob device, which comprises a lock shell, a handle, the knob device, an intermediate transmission component and a main rotating shaft, wherein the handle is arranged on the lock shell, and the end part of the lock shell, which is close to the free end of the handle, protrudes out of the free end of the handle and forms a protruding part; the knob device comprises a knob part and a rotating shaft part, the knob part is exposed out of the bulge part and is close to the free end of the handle, and the rotating shaft part can be rotatably arranged in the bulge part; the main rotating shaft can be rotatably arranged in the lock shell and is positioned below the handle; the middle transmission assembly is positioned in the lock shell and comprises a first transmission piece, a connecting rod and a second transmission piece, wherein the first transmission piece is arranged on the rotating shaft portion, the second transmission piece is arranged on the main rotating shaft, the first end of the connecting rod is in pivot connection with the first transmission piece, and the second end of the connecting rod is in pivot connection with the second transmission piece. It can be with knob and handle dislocation set to avoid the handle to block the knob, the user of being convenient for more rotates the knob, and it is more convenient to use, improves user experience.

Description

Lockset with knob device

Technical Field

The utility model relates to a tool to lock technical field especially relates to a tool to lock with knob device.

Background

Most traditional door locks generally adopt a mechanical unlocking mode of a manual key, are relatively reliable in use, but are difficult to realize automatic control, and are not as easy as electric door locks to replace unlocking and locking conditions; later, the industry began to adopt electric control's lock, can pass through discernment such as infrared, fingerprint, card swiping, password, through the rotatory spring bolt that drives of logic circuit control motor and open and the locking, for avoiding appearing the condition that can't open or lock the door body because of the electric control trouble, still remain the mechanical lock structure of opening and locking through machinery in many electric door locks.

In the above mechanical lock structure, the lock cylinder is generally driven by a key outdoors to drive the lock bolt on the lock cylinder to rotate so as to drive the lock bolt to open or close, and the lock bolt is generally driven to rotate by twisting the knob indoors to drive the lock bolt to open or close. After the door is unlocked, in order to facilitate people to pull open the door plate provided with the door lock, a handle which is convenient for hands to hold is generally arranged on a rear panel of the door lock, the handle and the rear panel of the door lock are arranged in parallel, the handle and the rear panel of the door lock are arranged at intervals, and a knob is arranged on the rear panel and is positioned below the handle.

However, the above door lock structure still has the following technical problems:

because the knob is installed on the rear panel and is located below the handle, the knob can be blocked by the handle, therefore, when people rotate the knob by hands, the hands have to stretch into the gap between the handle and the rear panel from the side to rotate the knob, the operation is inconvenient, the user experience is not good, if the handle is obliquely arranged relative to the rear panel, the overall size of the door lock can be increased, the occupied space is obviously increased, the door lock is inconvenient to package and transport, the appearance is not attractive enough, if the original knob is directly moved down to the position staggered with the handle, the positions of the lock tongue and the lock tongue hole are obviously not corresponding, if the positions of the lock tongue and the lock tongue hole are required to be corresponding, the installation position of the door lock or the opening position of the lock tongue hole are not required to be adjusted, and the national safety standard is not met.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a tool to lock with knob device, it can be with knob portion and handle dislocation set to avoid the handle to block knob portion, the user's of being convenient for more rotating knob portion uses more conveniently, improves user experience.

The purpose of the utility model is realized by adopting the following technical scheme:

the lockset with the knob device comprises a lock shell, a handle, the knob device, an intermediate transmission assembly and a main rotating shaft for installing a lock cylinder; the handle is arranged on the lock shell and is parallel to the lock shell, and the end part of the lock shell, which is close to the free end of the handle, protrudes out of the free end of the handle and forms a protruding part; the knob device comprises a knob part and a rotating shaft part which are connected, the knob part is exposed out of the bulge part and is close to the free end of the handle, and the rotating shaft part can be rotatably arranged in the bulge part; the main rotating shaft is rotatably arranged in the lock shell and is positioned below the handle; the middle transmission assembly is positioned in the lock shell and comprises a first transmission piece arranged on the rotating shaft part, a connecting rod and a second transmission piece arranged on the main rotating shaft, the first end of the connecting rod is in pivot connection with the first transmission piece, and the second end of the connecting rod is in pivot connection with the second transmission piece.

Further, the central axis of the rotating shaft part and the central axis of the main rotating shaft are located on the same horizontal plane, and a pivoting central line between the first end of the connecting rod and the first transmission piece and a pivoting central line between the second end of the connecting rod and the second transmission piece are located on the same horizontal plane.

Furthermore, the lock with the knob device also comprises a first limiting piece, the rotating shaft part and the main rotating shaft are both clamped with the first limiting piece, and a supporting piece is arranged in the lock shell, the supporting piece supports the first limiting piece and is fixedly connected with the first limiting piece, the rotating shaft part is provided with a first limit step, the first transmission piece is clamped on the rotating shaft part, one end of the first transmission piece is abutted against the first limit step, the other end of the first transmission piece is abutted against a first limit piece sleeved on the rotating shaft part, the main rotating shaft is provided with a second limiting step, the second transmission piece is clamped on the main rotating shaft, and one end of the second transmission member is abutted against the second limiting step, and the other end of the second transmission member is abutted against a first limiting part sleeved on the main rotating shaft.

Further, be equipped with two second locating parts in the bulge, two the second locating part winds the central axis of pivot portion sets gradually, and two enclose between the second locating part and close to form and dodge the groove, be equipped with in the pivot portion and dial the tongue, dial the tongue extend to dodge the groove and can dodge in the groove free rotation, work as pivot portion is in when corotation targets in place under the drive of knob portion, dial the tongue can with one of them the second locating part butt, work as pivot portion is in when the reversal targets in place under the drive of knob portion, dial the tongue can with another the second locating part butt.

Furthermore, the included angle between the two second limiting parts is A, and A is more than or equal to 90 degrees and less than or equal to 100 degrees.

Further, the knob device is still including being used for supplying knob portion with the torsional spring that pivot portion resets, the torsional spring have the position circle and by two free ends that the position circle extends out, be equipped with first annular location arch and third locating part in the bulge, pivot portion passes first annular location arch, the position circle card is located on the first annular location arch, the third locating part is located avoid outside the groove, just the third locating part is just right avoid the middle part position in groove, the third locating part and dial the tongue and all be located two between the free end, work as pivot portion is in when rotating under the drive of knob portion and target in place, one of them free end can by dial the tongue stir and with dial the tongue butt, and another free end can with third locating part butt.

Further, the knob device further comprises a positioning ring, the positioning ring is clamped on the outer wall surface of the rotating shaft portion, the poking tongue is arranged on the positioning ring, the positioning ring is located between the top wall of the protruding portion and the positioning ring, and the positioning ring can be abutted to the positioning ring.

Furthermore, the inner wall surface of the positioning ring extends inwards to form at least one clamping protruding part, and the outer wall surface of the rotating shaft part is provided with a limiting groove matched with the clamping protruding part in a clamping mode.

Further, the knob device further comprises a clamp spring, a clamp spring groove is formed in the outer wall surface of the rotating shaft portion, the clamp spring is clamped in the clamp spring groove, the clamp spring groove is close to the positioning ring, and the positioning ring is closer to the knob portion than the clamp spring groove.

Further, still be equipped with the gusset plate in the bulge, the gusset plate is cyclic annular, pivot portion passes the gusset plate, two the second locating part winds the central axis of gusset plate sets gradually, the one end of second locating part with the roof fixed connection of bulge, the other end of second locating part with gusset plate fixed connection.

Further, the lock shell includes the rear panel, the stiff end of handle with the upper end fixed connection of rear panel, the free end of handle towards with the direction that the lower tip of rear panel is parallel extends, the handle with the interval sets up and forms the dodging space that is used for supplying the palm to stretch into between the lower tip of rear panel, just the top surface of handle with the top surface of the upper end of rear panel is located same horizontal plane.

Compared with the prior art, the beneficial effects of the utility model reside in that:

set up and form the bulge through making the relative handle protrusion of lock shell, set up knob device and main pivot separation simultaneously and shift this knob device to the bulge, then connect this knob device and main pivot through the transmission of middle transmission subassembly, on the basis that can not obviously increase the overall dimension of this tool to lock for knob portion and handle dislocation set, thereby avoid the handle to block knob portion, the user of being convenient for more rotates knob portion, it is more convenient to use, improve user experience.

Drawings

Fig. 1 is a schematic perspective view of a lock with a knob device according to the present invention;

FIG. 2 is an exploded view of the latch shown in FIG. 1 with a knob device;

FIG. 3 is a schematic view of the internal structure of the lock housing of the lock with knob device shown in FIG. 2;

FIG. 4 is a perspective view of the knob device in the lock with the knob device shown in FIG. 2;

FIG. 5 is an exploded view of the knob device shown in FIG. 4;

FIG. 6 is a first perspective view of the latch with knob assembly shown in FIG. 1 in an initial state;

FIG. 7 is a block diagram of the latch of FIG. 6 from a second perspective when in an initial state;

FIG. 8 is a first perspective view of the latch with knob assembly shown in FIG. 1 in a reverse position;

FIG. 9 is a block diagram of a second perspective of the latch with knob assembly shown in FIG. 8 in a reverse rotation configuration;

FIG. 10 is a first perspective view of the latch with knob device shown in FIG. 1 in a forward rotation configuration;

fig. 11 is a structural view of a second viewing angle when the lock with the knob device shown in fig. 10 is in a forward rotation state.

In the figure: 1. a lock housing; 11. a rear panel section; 12. a support member; 13. a second limiting member; 14. a first annular positioning projection; 15. a third limiting member; 16. a reinforcing plate; 17. a guide cylinder; 2. a handle; 3. a knob device; 31. a knob; 311. a knob portion; 312. a rotating shaft part; 3121. a limiting groove; 3122. a clamp spring groove; 3123. positioning holes; 32. a positioning ring; 321. pulling the tongue; 322. a clamping convex part; 33. a torsion spring; 331. positioning rings; 332. a free end; 34. a clamp spring; 4. an intermediate transmission assembly; 41. a first transmission member; 42. a connecting rod; 43. a second transmission member; 5. a main rotating shaft; 51. a square hole; 6. a first limit piece; 7. and (4) screws.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Referring to fig. 1-2, a lock with a knob device according to a preferred embodiment of the present invention is shown, which includes a lock housing 1, a handle 2, a knob device 3, an intermediate transmission assembly 4, and a main shaft 5 for mounting a lock cylinder.

Wherein, as shown in fig. 1, the lock casing 1 is a strip casing, the lock casing 1 includes a rear panel, a fixed end of the handle 2 is fixedly connected with an upper end of the rear panel, a free end of the handle 2 extends towards a direction parallel to the lower end of the rear panel, an avoidance space is formed between the handle 2 and the lower end of the rear panel of the lock casing 1 at an interval, the avoidance space can be extended by a palm, so that a user can hold the handle 2, and the top surface of the handle 2 and the top surface of the upper end of the rear panel are located on the same horizontal plane, thus the whole structure of the lock is more compact, the lock is convenient for miniaturization design and packaging and transportation, in addition, the appearance of the lock is more beautiful, and referring to fig. 1 continuously, the end of the lock casing 1 close to the free end of the handle 2 is arranged to protrude out of the free end of the handle 2, and forms a projection portion (the position where the knob portion 311 is mounted is the projection portion).

As shown in fig. 2, the knob device 3 includes a knob 31, the knob 31 includes a knob portion 311 and a rotation shaft portion 312 connected to each other, the knob portion 311 is exposed to the rear panel portion 11 of the protruding portion (the rear panel portion 11 is a part of the lower end portion of the rear panel), the knob portion 311 is close to the free end of the handle 2, the rotation shaft portion 312 is rotatably mounted in the protruding portion, and the rotation shaft portion 312 can be driven to rotate by rotating the knob portion 311. The main rotating shaft 5 is provided with a square hole 51, the square hole 51 is used for being matched with the lock cylinder, specifically, a guide cylinder 17 is arranged in the lock shell 1, and the main rotating shaft 5 can be rotatably arranged in the guide cylinder 17 and is positioned below the handle 2 so as to be capable of driving a lock bolt on the lock cylinder, so that the lock bolt is driven to be opened or locked; referring to fig. 6-11, the intermediate transmission assembly 4 is located in the lock housing 1, the intermediate transmission assembly 4 includes a first transmission member 41 disposed on the rotation shaft portion 312, a connecting rod 42 and a second transmission member 43 disposed on the main rotation shaft 5, a first end of the connecting rod 42 is pivotally connected to the first transmission member 41, and a second end of the connecting rod 42 is pivotally connected to the second transmission member 43, so that the first transmission member 41, the connecting rod 42, the second transmission member 43 and the main rotation shaft 5 are sequentially transmitted by rotating the knob 31, thereby transmitting the lock bolt on the lock core to facilitate the opening or locking of the lock bolt.

The utility model discloses a tool to lock with knob device, 2 protrusions through making 1 relative handle of lock casing set up and form the bulge, set up knob device 3 and 5 separation of main pivot and shift this knob device 3 to the bulge simultaneously, then connect this knob device 3 and main pivot 5 through the transmission of middle transmission assembly 4, on the basis of the overall size that can not obviously increase this tool to lock, make knob device 3 and 2 dislocation set of handle, thereby avoid handle 2 to block knob portion 311, user's rotating knob portion 311 of being convenient for more, it is more convenient to use, user experience is improved.

As a preferred embodiment, the central axis of the rotating shaft 312 and the central axis of the main rotating shaft 5 are located on the same horizontal plane, and the pivot central line between the first end of the connecting rod 42 and the first transmission piece 41 and the pivot central line between the second end of the connecting rod 42 and the second transmission piece 43 are located on the same horizontal plane, so that the overall structure of the lock can be more compact, and the vertical movement of the connecting rod 42 can be ensured, thereby avoiding the movement interference between the connecting rod 42 and the inner wall surface of the lock housing 1.

Referring to fig. 2, 7, 9 and 11, as a preferred embodiment, the lock with the knob device further includes a first limiting member 6, the rotating shaft portion 312 and the main rotating shaft 5 are respectively provided with the first limiting member 6, as shown in fig. 3, a supporting member 12 is provided in the lock housing 1, the supporting member 12 supports the first position-limiting member 6, the supporting member 12 is fixedly connected to the first position-limiting member 6 via a screw 7, the rotating shaft 312 is provided with a first position-limiting step, the first transmission member 41 is sleeved on the rotating shaft 312, one end of the first transmission member 41 is abutted against the first limit step, the other end of the first transmission member 41 is abutted against the first limit member 6 clamped on the rotating shaft part 312, the main rotating shaft 5 is provided with a second limit step, the second transmission member 43 is sleeved on the main rotating shaft 5, one end of the second transmission member 43 abuts against the second limiting step, and the other end of the second transmission member 43 abuts against the first limiting member 6 clamped on the main rotating shaft 5. Therefore, the first transmission piece 41 and the second transmission piece 43 can be axially limited, so that the first transmission piece 41 and the second transmission piece 43 are prevented from moving axially, the first transmission piece 41 and the rotating shaft part 312 are prevented from being disconnected, and the second transmission piece 43 and the main rotating shaft 5 are prevented from being disconnected. Of course, the connection between the first limiting member 6 disposed on the rotating shaft portion 312 and the rotating shaft portion 312 may also be set as follows: a positioning hole 3123 may be formed on the rotating shaft portion 312, and a positioning portion is disposed on the first limiting member 6 clamped on the rotating shaft portion 312, and the positioning portion is inserted into the positioning hole 3123.

With continued reference to fig. 2, 3, 7, 9 and 11, two second limiting members 13 are fixedly disposed in the protruding portion (lock housing 1), the two second limiting members 13 are sequentially disposed around the central axis of the rotating shaft portion 312, an avoiding groove is formed between the two second limiting members 13, a shifting tongue 321 is disposed on the rotating shaft portion 312, the shifting tongue 321 extends to the avoiding groove and can freely rotate in the avoiding groove, the shifting tongue 321 is freely movable by the arrangement of the avoiding groove, when the knob portion 311 rotates forward or backward, the shifting tongue 321 can be prevented from obstructing the rotation of the rotating shaft portion 312, so that the rotating shaft portion 312 can smoothly rotate. Referring to fig. 10 and 11, when the rotating shaft portion 312 is driven by the knob portion 311 to rotate forward to a proper position, the shifting tongue 321 can abut against one of the second limiting members 13, referring to fig. 8 and 9, when the rotating shaft portion 312 is driven by the knob portion 311 to rotate backward to a proper position, the shifting tongue 321 can abut against the other second limiting member 13 to perform the functions of forward rotation and backward rotation limiting, and the rotation stroke of the knob 31 can be reduced, so that the phenomenon that the rotation amplitude of the main rotating shaft 5 is too large due to too large rotation amplitude of the rotating shaft portion 312 can be avoided, thereby avoiding too large impact on the lock bolt on the lock cylinder, protecting the lock cylinder, and prolonging the service life of the lock cylinder.

As a preferred embodiment, the included angle between the two second limiting members 13 is A, A is more than or equal to 90 degrees and less than or equal to 100 degrees, and A is limited in the range, so that the minimum stroke of the knob 31 is equal to or slightly greater than the stroke of the lock bolt on the lock core, the knob 31 can be prevented from rotating excessively, the main rotating shaft 5 can be prevented from rotating excessively, the lock core can be protected, the service life of the lock core can be further prolonged, in addition, the minimum stroke of the knob 31 is equal to or slightly greater than the stroke of the lock bolt on the lock core, and the unlocking and locking efficiency of the lock can be improved. Specifically, A can be equal to 90 degrees, at this time, the minimum stroke of forward rotation and reverse rotation of the knob 31 is 45 degrees, and the lock bolt on the lock can be just driven to be opened or locked, when A is equal to 100 degrees, the minimum stroke of forward rotation and reverse rotation of the knob 31 is 50 degrees, so that the minimum stroke of forward rotation or reverse rotation of the knob 31 is slightly larger than the stroke (generally 45 degrees) of the lock bolt on the lock core, and the situation that the lock bolt is not opened or locked in place can be prevented.

Referring to fig. 2, 4 and 5, as a preferred embodiment, the knob device 3 further includes a torsion spring 33 for resetting the knob portion 311 and the rotation shaft portion 312, the torsion spring 33 has a positioning ring 331 and two free ends 332 extending from the positioning ring 331, as shown in fig. 7, 9 and 11, a first annular positioning protrusion 14 and a third limiting member 15 are fixedly disposed in the protrusion (lock housing 1), the rotation shaft portion 312 passes through the first annular positioning protrusion 14, the positioning ring 331 is clamped on the first annular positioning protrusion 14, the third limiting member 15 is disposed outside the avoiding groove, the third limiting member 15 faces the middle position of the avoiding groove, the third limiting member 15 and the shifting tongue 321 are disposed between the two free ends 332, when the rotation shaft portion 312 is rotated to a position under the driving of the knob portion 311, one of the free ends 332 can be shifted by the shifting tongue 321 and abut against the shifting tongue 321, and the other free end 332 can abut against the third limiting member 15, thus, when the knob 31 rotates forward or backward to the right position, the torsion spring 33 will generate an acting force opposite to the forward or backward rotation direction of the knob 31, during the process of rotating the knob 31, a rotation feeling can be generated, and at the same time, the rotation of the knob 31 can be smoother, when the knob 31 rotates forward or backward to the right position and the knob 31 is loosened, the torsion spring 33 is reset to have its two free ends 332 located at the two ends of the third limiting member 15, and the torsion spring 33 toggles the toggle tongue 321 when being reset, so that the rotating shaft portion 312 is reset under the action of the toggle tongue 321, that is, the knob 31 is reset to the initial state, as shown in fig. 6 and 7 in particular, the structure diagram of the knob 31 in the initial state is shown, in which the knob 31 is kept vertical, and the knob 31 is located at the middle position of the two second limiting members 13, the knob 31 in the vertical state can be more conveniently grasped by people, and, at the, the forward and reverse strokes of the knob 31 are shortest, so that the unlocking and locking efficiency can be effectively improved, and in addition, the appearance of the knob 31 in the vertical state is more attractive, so that the appearance of the lockset is more attractive.

As shown in fig. 4 and 5, the knob device 3 further includes a positioning ring 32, the positioning ring 32 is clamped on the outer wall surface of the rotating shaft portion 312, the pulling tongue 321 is integrally formed with the positioning ring 32, the pulling tongue 321 is located on the outer circumferential surface of the positioning ring 32, the positioning ring 331 is located between the top wall of the protruding portion and the positioning ring 32, and the positioning ring 331 can abut against the positioning ring 32. Therefore, the shifting tongue 321 and the rotating shaft part 312 are arranged separately, the manufacturing difficulty of the rotating shaft part 312 can be effectively reduced, meanwhile, the positioning ring 331 of the torsion spring 33 can be axially limited by arranging the positioning ring 32, and the positioning ring 331 of the torsion spring 33 can be prevented from being disconnected from the first annular positioning protrusion 14 under the limiting action of the top wall of the protruding part and the positioning ring 32.

With continued reference to fig. 4 and 5, the inner wall surface of the positioning ring 32 extends inward to form at least one clamping protrusion 322, and the outer wall surface of the rotating shaft portion 312 is provided with a limiting groove 3121 which is in clamping fit with the clamping protrusion 322. Thus, the connection between the positioning ring 32 and the rotating shaft portion 312 can be reinforced, and the connection between the positioning ring 32 and the rotating shaft portion 312 can be more reliable. In this embodiment, the inner wall surface of the positioning ring 32 is provided with two symmetrically distributed clamping protrusions 322, and correspondingly, the outer wall surface of the rotating shaft portion 312 is provided with two limiting grooves 3121, so that the connection between the positioning ring 32 and the rotating shaft portion 312 is more reliable, and the difficulty in assembling the positioning ring 32 and the rotating shaft portion 312 is also avoided.

As shown in fig. 5, the length extending direction of the limiting groove 3121 is parallel to the central axis of the rotating shaft portion 312, one end of the limiting groove 3121 close to the knob portion 311 is a closed end, and one end of the limiting groove 3121 far from the knob portion 311 has an opening for the clamping protrusion 322 to enter, so as to facilitate the installation of the positioning ring 32.

With continued reference to fig. 4 and 5, the knob device 3 further includes a snap spring 34, a snap spring groove 3122 is formed on the outer wall surface of the rotating shaft portion 312, the snap spring 34 is snapped in the snap spring groove 3122, the snap spring groove 3122 is disposed near the positioning ring 32, and the positioning ring 32 is disposed closer to the knob portion 311 than the snap spring groove 3122. Thus, the positioning ring 32 can be axially limited, so that the positioning ring 32 is prevented from being disconnected from the rotating shaft portion 312, and the connection relationship between the positioning ring 32 and the rotating shaft portion 312 is further strengthened.

As shown in fig. 3, a reinforcing plate 16 is further disposed in the protruding portion (lock housing 1), the reinforcing plate 16 is annular, the rotating shaft portion 312 passes through the reinforcing plate 16, the two second limiting members 13 are sequentially disposed around a central axis of the reinforcing plate 16, one end of each second limiting member 13 is fixedly connected to a top wall of the protruding portion, and the other end of each second limiting member 13 is fixedly connected to the reinforcing plate 16. Therefore, the connection between the second position limiting member 13 and the lock housing 1 can be strengthened, so that the connection between the second position limiting member 13 and the lock housing 1 is more reliable, the second position limiting member 13 is prevented from being easily disconnected from the lock housing 1 due to the impact of the shifting tongue 321, and the service life is prolonged.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The lockset with the knob device is characterized by comprising a lock shell, a handle, the knob device, an intermediate transmission assembly and a main rotating shaft for installing a lock cylinder; the handle is arranged on the lock shell, the handle and the lock shell are arranged in parallel, and the end part, close to the free end of the handle, of the lock shell is arranged to protrude out of the free end of the handle and form a protruding part; the knob device comprises a knob part and a rotating shaft part which are connected, the knob part is exposed out of the bulge part and is close to the free end of the handle, and the rotating shaft part can be rotatably arranged in the bulge part; the main rotating shaft is rotatably arranged in the lock shell and is positioned below the handle; the middle transmission assembly is positioned in the lock shell and comprises a first transmission piece arranged on the rotating shaft part, a connecting rod and a second transmission piece arranged on the main rotating shaft, the first end of the connecting rod is in pivot connection with the first transmission piece, and the second end of the connecting rod is in pivot connection with the second transmission piece.

2. The lock with knob device according to claim 1, wherein the central axis of the shaft portion and the central axis of the main shaft are located on the same horizontal plane, and the pivot center line between the first end of the link and the first transmission member and the pivot center line between the second end of the link and the second transmission member are located on the same horizontal plane.

3. The lock with knob device according to claim 1, further comprising a first stopper, wherein the first stopper is engaged with both the shaft portion and the main shaft, and a supporting piece is arranged in the lock shell, the supporting piece supports the first limiting piece and is fixedly connected with the first limiting piece, the rotating shaft part is provided with a first limit step, the first transmission piece is sleeved on the rotating shaft part, one end of the first transmission piece is abutted with the first limit step, the other end of the first transmission piece is abutted with a first limit piece clamped on the rotating shaft part, the main rotating shaft is provided with a second limiting step, the second transmission piece is clamped on the main rotating shaft, and one end of the second transmission member is abutted against the second limiting step, and the other end of the second transmission member is abutted against a first limiting part sleeved on the main rotating shaft.

4. The lock with the knob device according to claim 1, wherein two second position-limiting members are disposed in the protrusion, the two second position-limiting members are sequentially disposed around a central axis of the rotation shaft portion, an avoiding groove is defined between the two second position-limiting members, a moving tongue is disposed on the rotation shaft portion, the moving tongue extends to the avoiding groove and can freely rotate in the avoiding groove, when the rotation shaft portion is driven by the knob portion to rotate forward in place, the moving tongue can abut against one of the second position-limiting members, and when the rotation shaft portion is driven by the knob portion to rotate backward in place, the moving tongue can abut against the other second position-limiting member.

5. The lock with knob device according to claim 4, wherein the angle between said two second position-limiting members is A, 90 ° < A ≦ 100 °.

6. The lock with knob device according to claim 4, wherein said knob device further comprises a torsion spring for restoring said knob portion and said rotation shaft portion, the torsion spring is provided with a positioning ring and two free ends extending out of the positioning ring, a first annular positioning bulge and a third limiting piece are arranged in the convex part, the rotating shaft part passes through the first annular positioning bulge, the positioning ring is clamped on the first annular positioning bulge, the third limiting piece is positioned outside the avoidance groove, and the third limiting piece is over against the middle position of the avoidance groove, the third limiting piece and the shifting tongue are both positioned between the two free ends, when the rotating shaft part is driven by the knob part to rotate in place, one free end can be shifted by the shifting tongue and is abutted against the shifting tongue, and the other free end can be abutted against the third limiting piece.

7. The lock with knob device according to claim 6, wherein said knob device further comprises a positioning ring, said positioning ring is engaged with an outer wall surface of said rotating shaft portion, said latch is disposed on said positioning ring, said positioning ring is disposed between a top wall of said protrusion and said positioning ring, and said positioning ring can abut against said positioning ring.

8. The lockset with knob device as claimed in claim 7, wherein said inner wall of said positioning ring extends inward to form at least one clamping protrusion, and said outer wall of said rotation shaft is formed with a spacing groove engaging with said clamping protrusion.

9. The lock with knob device according to claim 7, wherein said knob device further comprises a clamp spring, a clamp spring groove is formed on an outer wall surface of said rotation shaft portion, said clamp spring is clamped in said clamp spring groove, said clamp spring groove is disposed adjacent to said positioning ring, and said positioning ring is disposed closer to said knob portion than said clamp spring groove.

10. The lock with knob device according to claim 4, wherein a reinforcing plate is further disposed in the protrusion, the reinforcing plate is annular, the rotation shaft passes through the reinforcing plate, two second position-limiting members are sequentially disposed around a central axis of the reinforcing plate, one end of each second position-limiting member is fixedly connected to the top wall of the protrusion, and the other end of each second position-limiting member is fixedly connected to the reinforcing plate.

11. The lock with knob device according to claim 1, wherein the lock case includes a rear panel, a fixed end of the handle is fixedly connected to an upper end of the rear panel, a free end of the handle extends in a direction parallel to a lower end of the rear panel, an escape space for a palm to extend into is formed between the handle and the lower end of the rear panel, and a top surface of the handle and a top surface of the upper end of the rear panel are located on the same horizontal plane.