CN211874143U

CN211874143U - Door and window lock with hidden handle

Info

Publication number: CN211874143U
Application number: CN202020141237.2U
Authority: CN
Inventors: 肖和平
Original assignee: Jiangsu Sanqiao Intelligent Technology Co ltd
Current assignee: Jiangsu Sanqiao Intelligent Technology Co ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-11-06
Anticipated expiration: 2030-01-21

Abstract

The utility model discloses a door and window lock that can hide handle, include: handle subassembly, spring bolt subassembly and shell, handle subassembly includes: the rotary handle is provided with an installation cavity, the hidden part is arranged at the bottom of the installation cavity, and the hidden part is fixed with the spring bolt assembly and then installed inside the shell; the hidden part is used for controlling the relative position of the rotary handle and the shell, the rotary handle is also provided with a lock cylinder, the lock cylinder is fixed in the installation cavity and positioned above the hidden part, and the bottom of the lock cylinder is clamped with the hidden part; when the rotary handle is pressed into the shell to be hidden, the hidden part adjusts the lock cylinder into a locking state; when the lock core is in an unlocked state, the hiding part ejects the rotary handle part out of the shell. This technical scheme has realized the purpose of hiding the twist grip through twist grip and hidden portion, has solved the problem that current lock handle can not hide, easily be damaged or cause the potential safety hazard.

Description

Door and window lock with hidden handle

Technical Field

The utility model belongs to the technical field of machinery, a locking device is related to, especially a door and window lock that handle can be hidden.

Background

The door lock is used for locking the door so as to prevent other people from opening the door, the door lock is classified into a plurality of classes, requirements on the door lock are different in various occasions, the door lock on the current market is basically provided with a handle, the handle has the effect that a user has an acting point when the door is opened, so that the door is opened by screwing the handle, but the handle has a problem that the door lock is easily damaged due to external force collision, or the surface of the handle is scratched to influence the whole appearance, or even the handle is dropped or is connected with the door lock due to excessive external force, so that the door lock cannot be opened by the handle, meanwhile, the handle exposed outside often collides children playing in a running mode, a person with a low head and picking up objects and the like, and certain physiological damage is caused to people without consciousness and defense.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a new technical scheme of door and window lock with a hidden handle for overcoming the defects of the prior art.

In order to achieve the above object, the utility model provides a door and window lock that can hide handle, include: handle subassembly, spring bolt subassembly and shell, handle subassembly includes: the rotary handle is provided with an installation cavity, the hidden part is arranged at the bottom of the installation cavity, and the hidden part is fixed with the spring bolt assembly and then installed inside the shell; the hidden part is used for controlling the relative position of the rotating handle and the shell.

The rotary handle is provided with a lock cylinder, the lock cylinder is fixed in the installation cavity and positioned above the hiding part, and the bottom of the lock cylinder is clamped with the hiding part; when the rotary handle is pressed into the shell to be hidden, the hidden part adjusts the lock cylinder into a locking state; when the lock core is in an unlocked state, the hiding part ejects the rotary handle part out of the shell.

In one embodiment, the bolt assembly comprises a bolt and an adjusting part, the bottom of the shell is provided with a mounting hole, the adjusting part is fixed in the shell, and the adjusting part extends out of the shell through the mounting hole and then is fixedly connected with the bolt; the adjusting part is used for adjusting the position of the lock tongue.

In one embodiment, the housing includes a fixing sleeve and a fixing panel, the fixing sleeve and the fixing panel are integrally formed, and the fixing panel is used for fixing the housing and the door panel.

In one embodiment, the adjusting part comprises an adjusting cylinder, an adjusting sleeve, a positioning pin, an adjusting spring and a mounting bracket, wherein the adjusting cylinder comprises a handle cavity and a spring cavity for mounting the handle assembly; the handle cavity is used for installing a handle assembly; the spring cavity is arranged at the bottom of the handle cavity, one end of the spring cavity, which is far away from the handle cavity, is of an open structure, and a limit groove is arranged on the side wall of the spring cavity; the adjusting sleeve is sleeved outside the spring cavity, the adjusting spring is arranged in the spring cavity, one end of the mounting bracket is in contact with the adjusting spring, an adjusting limiting hole is formed in one end of the mounting bracket in contact with the adjusting spring, and the positioning pin simultaneously penetrates through the limiting groove and the adjusting limiting hole; the adjusting sleeve is fixedly assembled with the shell to form an L-shaped groove which is used for limiting the moving path of the positioning pin; the other end of the mounting bracket far away from the adjusting spring is fixedly connected with the lock tongue.

In one embodiment, the mounting cavity is a hollow cylindrical structure with an upper opening, and a first fixed limiting hole is formed in the side wall close to the bottom of the mounting cavity; a second fixed limiting hole is formed in the position corresponding to the handle cavity; the hidden part is provided with an elastic telescopic block, the elastic telescopic block is fixed at the bottom in the installation cavity, and the lock cylinder is clamped and fixed at the top of the elastic telescopic block; the lock core is used for controlling the telescopic state of the elastic telescopic block; an ejection spring is arranged between the outer bottom of the mounting cavity and the inner bottom of the handle cavity; the outer side wall of the installation cavity is provided with a positioning protrusion, a positioning groove is formed in the corresponding position of the handle cavity, and the rotating handle is fixed in the positioning groove through the positioning protrusion.

In one embodiment, the elastic telescopic block comprises a first limiting block, a second limiting block and a reset spring, the first limiting block is provided with a bolt, a clamping seat and a reset inclined block, the second limiting block and the first limiting block adopt the same structure, the first limiting block and the second limiting block are oppositely arranged, two ends of the reset spring are simultaneously sleeved on the bolt of the first limiting block and the bolt of the second limiting block, and the clamping seat is clamped and fixed on the first fixed limiting hole; the bottom of the lock cylinder is provided with a shifting block, and the shifting block is used for shifting the reset oblique block to enable the first limiting block and the second limiting block to move oppositely.

In one embodiment, the lock core comprises a rotary lock head and a rotary lock disc, the rotary lock head is provided with a key insertion hole, the bottom of the rotary lock head is provided with a deflector rod, one surface of the rotary lock disc, which is close to the deflector rod, is provided with a deflector rod groove, and the deflector rod is inserted and fixed in the deflector rod groove; the shifting block is fixed at the bottom of the rotary lock disc; the rotary lock head and the rotary lock disc realize synchronous motion under the action of the deflector rod and the deflector rod groove.

In one embodiment, two convex blocks are arranged on the inner side wall of the shell at positions corresponding to the adjusting sleeve; the adjusting sleeve is of a cylindrical structure with openings at two ends, a first notch corresponding to the two protruding blocks is arranged on the side wall of the adjusting sleeve, a second notch is arranged beside the first notch, the width of the second notch is larger than or equal to the diameter of the positioning pin, and the height of the second notch is lower than that of the first notch; the first notch, the second notch and the two protruding blocks form an L-shaped groove, and the number of the L-shaped grooves is two.

In one embodiment, the retaining groove is "factory" shaped.

In one embodiment, a cuboid limiting area is arranged at one end, far away from the adjusting spring, of the mounting bracket, a corresponding rectangular hole is formed in the spring bolt, the rectangular hole is sleeved outside the cuboid limiting area, internal threads are arranged in the cuboid limiting area, and the spring bolt is fixed at one end, far away from the adjusting spring, of the mounting bracket through a fixing screw and the internal threads in a connecting mode.

The beneficial effects are as follows: this technical scheme has realized the effect of hiding the twist grip after using through the cooperation of twist grip and hidden portion, has solved current lock handle and can not hide, and outstanding handle is easy to be damaged or cause the problem of potential safety hazard outside.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is an exploded view of a door/window lock with a hidden handle according to the present invention.

FIG. 2 is a schematic structural view of a rotating handle and an adjusting cylinder of the present invention;

FIG. 3 is a schematic structural view of the middle elastic expansion block and the lock core of the present invention;

fig. 4 is a schematic structural view of a rotary lock disk according to the present invention;

fig. 5 is a schematic structural view of the adjusting portion of the present invention.

Reference numerals: the lock comprises a shell 1, a fixed sleeve 101, a fixed panel 102, a mounting hole 103, a lock tongue component 2, a lock tongue 201, an adjusting part 202, a handle component 3, a rotary handle 301, a hiding part 302, a mounting cavity 304, a lock cylinder 305, an adjusting cylinder 203, an adjusting sleeve 204, a positioning pin 205, an adjusting spring 206, a mounting bracket 207, a handle cavity 208, a spring cavity 209, a limiting groove 210, an adjusting limiting hole 211, a first fixing limiting hole 306, a second fixing limiting hole 212, an elastic telescopic block 307, an ejecting spring 308, a positioning protrusion 309, a positioning groove 310, a first limiting block 311, a second limiting block 312, a resetting spring 313, a bolt 3111, a clamping seat 3112, a resetting oblique block 3113, a shifting block 3051, a rotary lock head 3052, a rotary lock disc 3, a shifting rod 3054, a shifting rod groove 3055, a first notch 2042, a second notch 2043, a groove 213, a rubber ring 214, a clamp spring 4, a clamp spring groove 41, a fixed screw 5, a cuboid limiting, Rectangular hole 61, key 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Example (b):

referring to fig. 1 to 5, a handle-concealable door and window lock includes: the lock bolt assembly comprises a shell 1, a lock bolt assembly 2 and a handle assembly 3, wherein the shell 1 comprises a fixing sleeve 101 and a fixing panel 102, the fixing sleeve 101 and the fixing panel 102 are integrally formed, and the fixing panel 102 is used for fixing the shell 1 and a door panel.

The bolt assembly 2 comprises a bolt 201 and an adjusting part 202, the bottom of the fixed sleeve 101 is provided with a mounting hole 103, the adjusting part 202 is fixed inside the fixed sleeve 101, and the adjusting part 202 extends out of the fixed sleeve 101 through the mounting hole 103 and then is fixedly connected with the bolt 201; the adjusting part 202 is used for adjusting the position of the bolt 201; the handle assembly 3 comprises a rotary handle 301 and a hidden part 302, the rotary handle 301 is provided with an installation cavity 304, the hidden part 302 is arranged at the bottom of the installation cavity 304, and the hidden part 302 and the adjusting part 202 are fixed and then installed inside the fixed sleeve 101; the hidden part 302 is used for controlling the relative position of the rotating handle 301 and the fixed sleeve 101; the rotary handle 301 is provided with a lock cylinder 305, the lock cylinder 305 is fixed in the installation cavity 304 and is positioned above the hidden part 302, and the bottom of the lock cylinder 305 is clamped with the hidden part 302; when the rotary handle 301 is pressed into the fixing sleeve 101 to be hidden, the hidden part 302 adjusts the lock cylinder 305 to be in a locking state; when the key cylinder 305 is in the unlocked state, the hidden portion 302 partially ejects the rotary knob 301 out of the fixing sleeve 101.

Preferably, in the present embodiment, the adjusting portion 202 includes an adjusting cylinder 203, an adjusting sleeve 204, a positioning pin 205, an adjusting spring 206, and a mounting bracket 207, and the adjusting cylinder 203 includes a handle cavity 208 and a spring cavity 209 for mounting the handle assembly 3; the handle cavity 208 is used for mounting the handle assembly 3; the spring cavity 209 is arranged at the bottom of the handle cavity 208, one end of the spring cavity 209, which is far away from the handle cavity 208, is of an open structure, and a limit groove 210 is arranged on the side wall of the spring cavity 209; the adjusting sleeve 204 is sleeved outside the spring cavity 209, the adjusting spring 206 is arranged in the spring cavity 209, one end of the mounting bracket 207 is in contact with the adjusting spring 206, an adjusting limiting hole 211 is formed in one end of the mounting bracket 207 in contact with the adjusting spring 206, and the positioning pin 205 penetrates through the limiting groove 210 and the adjusting limiting hole 211 simultaneously; the adjusting sleeve 204 is fixedly assembled with the fixing sleeve 101 to form an "L" shaped groove (not shown) for defining a moving path of the positioning pin 205; the other end of the mounting bracket 207, which is far away from the adjusting spring 206, is fixedly connected with the bolt 201.

Preferably, the mounting cavity 304 is a hollow cylindrical structure with an upper opening, and a first fixed limiting hole 306 is arranged on the side wall close to the bottom of the mounting cavity 304; a second fixed limiting hole 212 is formed in the corresponding position of the handle cavity 208; the hidden part 302 is provided with an elastic telescopic block 307, the elastic telescopic block 307 is fixed at the bottom in the installation cavity 304, and the lock cylinder 305 is clamped and fixed at the top of the elastic telescopic block 307; the lock cylinder 305 is used for controlling the expansion state of the elastic expansion block 307; an ejection spring 308 is arranged between the outer bottom of the mounting cavity 304 and the inner bottom of the handle cavity 208; the outer side wall of the mounting cavity 304 is provided with a positioning protrusion 309, a positioning groove 310 is arranged at the corresponding position of the handle cavity 208, and the rotating handle 301 is fixed in the positioning groove 310 by the positioning protrusion 309. The positioning projection 309 and the positioning groove 310 define the synchronism of the movement between the rotary handle 301 and the regulating portion 202.

Preferably, the elastic telescopic block 307 comprises a first limit block 311, a second limit block 312 and a reset spring 313, the first limit block 311 is provided with a bolt 3111, a clamping seat 3112 and a reset inclined block 3113, the second limit block 312 and the first limit block 311 adopt the same structure, the first limit block 311 and the second limit block 312 are oppositely arranged, two ends of the reset spring 313 are simultaneously sleeved on the bolt 3111 of the first limit block 311 and the second limit block 312, and the clamping seat 3112 is clamped and fixed on the first fixed limit hole 306; the bottom of the lock core 305 is provided with a shifting block 3051, and the shifting block 3051 is used for shifting the reset sloping block 3113 so as to enable the first limiting block 311 and the second limiting block 312 to move oppositely.

Preferably, the lock cylinder 305 comprises a rotary lock head 3052 and a rotary lock disc 3053, the rotary lock head 3052 is provided with a key insertion hole (not shown), a deflector rod 3054 is arranged at the bottom of the rotary lock head 3052, a deflector rod groove 3055 is arranged on one side, close to the deflector rod 3054, of the rotary lock disc 3053, and the deflector rod 3054 is inserted and fixed in the deflector rod groove 3055; the shifting block 3051 is fixed at the bottom of the rotary lock disc 3053; the rotary lock head 3052 and the rotary lock disc 3053 realize synchronous motion under the action of the deflector rod 3054 and the deflector rod groove 3055.

Preferably, the fixing panel 102 is provided with at least two fixing screw holes (not shown); two convex blocks (not shown) are arranged on the inner side wall of the fixed sleeve 101 at positions corresponding to the adjusting sleeve 204; the adjusting sleeve 204 is a cylindrical structure with two open ends, a first notch 2042 corresponding to the two protruding blocks is arranged on the side wall of the adjusting sleeve 204, a second notch 2043 is arranged beside the first notch 2042, the width of the second notch 2043 is greater than or equal to the diameter of the positioning pin 205, and the height of the second notch 2043 is lower than that of the first notch 2042; the first notch 2042, the second notch 2043 and the two protrusions form the aforementioned "L" shaped grooves (not shown), and the number of the "L" shaped grooves is two.

Preferably, the restraint slot 210 is "factory" shaped.

Preferably, the diameter of the spring cavity 209 is smaller than that of the handle cavity 208, a groove 213 is arranged outside the joint of the spring cavity 209 and the handle cavity 208, and a rubber ring 214 is arranged in the groove 213.

Preferably, the spring locking device further comprises a clamp spring 4, one end of the spring cavity 209, which is close to the mounting bracket 207, is provided with a clamp spring groove 41, the clamp spring 4 is installed in the clamp spring groove 41, the lock tongue 201 and the mounting bracket 207 are fixed through a fixing screw 5, and one end of the clamp spring 4, which is far away from the fixing screw 5, is in contact with the fixing sleeve 101.

Preferably, the mounting bracket 207 is kept away from regulating spring 206 one end and is equipped with the spacing district of cuboid 6, is equipped with corresponding rectangular hole 61 on the spring bolt 201, and rectangular hole 61 suit is outside the spacing district of cuboid 6, and the spacing district of cuboid 6 is equipped with the internal thread, and the spring bolt 201 is fixed in the one end that regulating spring 206 was kept away from to mounting bracket 207 through set screw 5, female connection.

The working principle is as follows:

the key is inserted into the lock cylinder, and the key is rotated to drive the lock cylinder to stir the elastic telescopic block, namely, the shifting block pushes the reset inclined blocks of the first limiting block and the second limiting block to enable the first limiting block and the second limiting block to move oppositely; at the moment, the clamping seats of the first limiting block and the second limiting block are respectively retracted inwards and then separated from the fixation of the second fixed limiting hole, and meanwhile, the rotating handle ejects out of the surface of the fixed sleeve under the action of the ejection spring; at this moment, the bolt can be controlled by rotating the rotating handle, and the control process is as follows: when the door and window lock is in an initial state, the lock tongue and the rotating handle are in a horizontal state, when the rotating handle is rotated to a position forming an angle of 90 degrees with the horizontal line, the lock tongue is also in the position forming the angle of 90 degrees and limits the door plate, at the moment, the positioning pin in the door and window lock rotates by 90 degrees, and the rotating path is the position of a horizontal groove at the bottom of an L-shaped groove formed by the adjusting sleeve and the shell; under this state, still accessible rotation latch is stirred the twist grip to the horizontality in door plant inside to reach the effect of opening the door from the door.

Further, rotate the twist grip to with initial condition 180 degrees angular position, this in-process inside locating pin will be promoted by the inside protruding piece of shell, it is spacing by the spacing groove after getting into the spacing groove, stir the spring bolt in the door this moment, the spring bolt will be in the lock dead state, can not follow the door and open the door.

After the adjustment to the spring bolt is accomplished, when needing to hide the twist grip, only need press the twist grip top, then the downward motion of handle subassembly under the positioning action of location arch and constant head tank, reach the fixed spacing hole department of second until the cassette of first stopper and second stopper, the cassette loses the outside extension under reset spring's effect behind the stopping of handle intracavity wall to it, at this moment, because the promotion of the sloping block that resets of first stopper and second stopper, the shifting block will drive the lock core and rotate to initial position yet.

The utility model discloses an elastic expansion piece and lock core have realized the purpose of hiding twist grip, have utilized the characteristics between each structure ingeniously, and overall structure is compact, and it is effective and convenient to adjust, is suitable for the popularization and is applied to various places.

Claims

1. A handle concealable door and window lock comprising: handle subassembly, spring bolt subassembly and shell, its characterized in that, the handle subassembly includes: the bolt assembly comprises a rotary handle and a hiding part, wherein the rotary handle is provided with an installation cavity, the hiding part is arranged at the bottom of the installation cavity, and the hiding part is fixed with the bolt assembly and then installed in the shell; the hidden part is used for controlling the relative position of the rotating handle and the shell;

the rotary handle is provided with a lock cylinder, the lock cylinder is fixed in the installation cavity and positioned above the hiding part, and the bottom of the lock cylinder is clamped with the hiding part; when the rotary handle is pressed into the shell to be hidden, the hidden part adjusts the lock cylinder into a locking state; when the lock cylinder is in an unlocked state, the hiding part ejects the rotating handle part out of the shell.

2. The door and window lock with the concealable handle as claimed in claim 1, wherein the latch bolt assembly comprises a latch bolt and an adjusting part, the bottom of the housing is provided with a mounting hole, the adjusting part is fixed in the housing, and the adjusting part extends out of the housing through the mounting hole and then is fixedly connected with the latch bolt; the adjusting part is used for adjusting the position of the lock tongue.

3. A handle concealable door and window lock as claimed in claim 1, wherein said outer shell comprises a fixing sleeve and a fixing panel, said fixing sleeve and said fixing panel being integrally formed, said fixing panel being for fixing said outer shell and a door panel.

4. A handle-concealable door and window lock as claimed in claim 2, wherein: the adjusting part comprises an adjusting cylinder, an adjusting sleeve, a positioning pin, an adjusting spring and a mounting bracket, and the adjusting cylinder comprises a handle cavity and a spring cavity which are used for mounting the handle assembly; the handle cavity is used for mounting the handle assembly; the spring cavity is arranged at the bottom of the handle cavity, one end of the spring cavity, which is far away from the handle cavity, is of an open structure, and a limiting groove is formed in the side wall of the spring cavity; the adjusting sleeve is sleeved outside the spring cavity, the adjusting spring is arranged in the spring cavity, one end of the mounting bracket is in contact with the adjusting spring, an adjusting limiting hole is formed in one end of the mounting bracket in contact with the adjusting spring, and the positioning pin penetrates through the limiting groove and the adjusting limiting hole simultaneously; the adjusting sleeve is fixedly assembled with the shell to form an L-shaped groove which is used for limiting the moving path of the positioning pin; the other end of the mounting bracket, which is far away from the adjusting spring, is fixedly connected with the lock tongue.

5. A handle concealable door and window lock as claimed in claim 4, wherein: the mounting cavity is of a hollow cylindrical structure with an upper opening, and a first fixed limiting hole is formed in the side wall close to the bottom of the mounting cavity; a second fixed limiting hole is formed in the position corresponding to the handle cavity; the hidden part is provided with an elastic telescopic block, the elastic telescopic block is fixed at the bottom in the installation cavity, and the lock cylinder is clamped and fixed at the top of the elastic telescopic block; the lock cylinder is used for controlling the telescopic state of the elastic telescopic block; an ejection spring is arranged between the outer bottom of the mounting cavity and the inner bottom of the handle cavity; the outer side wall of the installation cavity is provided with a positioning protrusion, a positioning groove is formed in the corresponding position of the handle cavity, and the rotating handle is fixed in the positioning groove through the positioning protrusion.

6. A handle concealable door and window lock as claimed in claim 5, wherein: the elastic telescopic block comprises a first limiting block, a second limiting block and a reset spring, the first limiting block is provided with a bolt, a clamping seat and a reset inclined block, the second limiting block and the first limiting block adopt the same structure, the first limiting block and the second limiting block are oppositely arranged, two ends of the reset spring are simultaneously sleeved on the bolt of the first limiting block and the second limiting block, and the clamping seat is clamped and fixed on the first fixed limiting hole; the bottom of the lock cylinder is provided with a shifting block, and the shifting block is used for shifting the reset oblique block to enable the first limiting block and the second limiting block to move oppositely.

7. A handle concealable door and window lock as claimed in claim 6, wherein: the lock core comprises a rotary lock head and a rotary lock disc, the rotary lock head is provided with a key insertion hole, the bottom of the rotary lock head is provided with a deflector rod, one surface of the rotary lock disc, which is close to the deflector rod, is provided with a deflector rod groove, and the deflector rod is fixedly inserted into the deflector rod groove; the shifting block is fixed at the bottom of the rotary lock disc; the rotary lock head and the rotary lock disc realize synchronous motion under the action of the deflector rod and the deflector rod groove.

8. A handle concealable door and window lock as claimed in claim 4, wherein: two protruding blocks are arranged on the inner side wall of the shell at positions corresponding to the adjusting sleeve; the adjusting sleeve is of a cylindrical structure with openings at two ends, a first notch corresponding to the two protruding blocks is arranged on the side wall of the adjusting sleeve, a second notch is arranged beside the first notch, the width of the second notch is larger than or equal to the diameter of the positioning pin, and the height of the second notch is lower than that of the first notch; the first notch, the second notch and the two protruding blocks form an L-shaped groove, and the number of the L-shaped grooves is two.

9. A handle concealable door and window lock as claimed in claim 4, wherein: the limiting groove is shaped like a factory.

10. A handle-concealable door and window lock according to any one of claims 4 to 9, wherein: the mounting bracket is far away from one end of the adjusting spring and is provided with a cuboid limiting area, the spring bolt is provided with a corresponding rectangular hole, the rectangular hole is sleeved outside the cuboid limiting area, the cuboid limiting area is provided with internal threads, and the spring bolt is fixed to one end, far away from the adjusting spring, of the mounting bracket through a fixing screw and the internal threads in a connecting mode.