CN213980342U

CN213980342U - Locking device for sliding door and window

Info

Publication number: CN213980342U
Application number: CN202021819803.7U
Authority: CN
Inventors: 白宝鲲
Original assignee: Guangdong Kinlong Hardware Products Co Ltd
Current assignee: Guangdong Kinlong Hardware Products Co Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-08-17
Anticipated expiration: 2030-08-26

Abstract

The utility model provides a locking device for sliding door. The locking device includes: installation department, transmission assembly and locking Assembly. The locking assembly has a first position in which the locking assembly locks with a cooperating structure fixed to the sash of the sliding door and window, and a second position in which the locking assembly releases the cooperating structure. The transmission component and the locking component are arranged on the door and window leaf of the sliding door and window through the installation part. Through rotating the transmission assembly to drive the locking assembly to switch between the first position and the second position along the straight line path, then can make the cooperation structure cooperation or release cooperation structure on locking assembly and the door and window frame to can make door and window fan and door and window frame locking or unblock, and then make things convenient for sliding door to realize the theftproof function, and locking device simple structure, spare part are few, manufacturing procedure is few, the equipment is convenient.

Description

Locking device for sliding door and window

Technical Field

The utility model relates to a sliding door's accessory technical field, in particular to a locking device for sliding door.

Background

Sliding doors and windows are widely used in buildings due to their small space occupation. When the sliding door and window is closed, the door and window is easy to pry open and enter the room, the safety is not high, and therefore the sliding door and window needs to be locked for the purpose of theft prevention. However, when the anti-theft lock is applied to a sliding door on the market, the structures of the push-pull lock and the handle lock with the anti-theft function are complex, the parts are small and many (small steel balls, small springs, pins and the like), the post-processing procedures of the product are many, and the assembly is inconvenient.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a locking device for a sliding door, which has a simple structure and is convenient to process and assemble, aiming at the problems of the conventional locking device for a sliding door, such as complicated structure, many parts, and inconvenient processing and assembling.

The embodiment of the application provides a locking device for sliding door, includes:

the mounting part is used for being fixedly connected with a door and window sash of the sliding door and window;

the transmission assembly is rotatably connected with the mounting part; and

the locking assembly is connected with the transmission assembly and provided with a first position and a second position, the locking assembly is locked with a matching structure fixed on a door and window frame of the sliding door and window in the first position, the matching structure is released by the locking assembly in the second position, and the transmission assembly drives the locking assembly to move when rotating so that the locking assembly is switched between the first position and the second position along a linear path.

The transmission assembly and the locking assembly are arranged on the door and window sash of the sliding door and window through the mounting part. Through rotating the transmission assembly to drive the locking assembly to switch between the first position and the second position along the straight line path, then can make the cooperation structure cooperation or release cooperation structure on locking assembly and the door and window frame to can make door and window fan and door and window frame locking or unblock, and then make things convenient for sliding door to realize the theftproof function, and locking device simple structure, spare part are few, manufacturing procedure is few, the equipment is convenient.

In one embodiment, the transmission assembly comprises:

the body is rotatably connected with the mounting part; and

the first linkage part is fixedly connected with the body, so that the first linkage part drives the locking assembly to move when the body rotates.

In an embodiment, the locking assembly is provided with a linkage groove matched with the first linkage part, so that the first linkage part drives the locking assembly to move when rotating.

In one embodiment, when the body rotates in a first direction, the first linkage portion drives the locking assembly to move from a second position to the first position, and when the body rotates in a second direction opposite to the first direction, the first linkage portion drives the locking assembly to move from the first position to the second position; the body is provided with a limiting structure;

the locking assembly is provided with a first matching structure; when the locking assembly reaches the first position, the limiting structure can be matched with the first matching structure by continuing to rotate the body along the first direction, so that the locking assembly is locked at the first position; and/or the presence of a gas in the gas,

the locking assembly is provided with a second matching structure; when the locking assembly reaches the second position, the limiting structure can be matched with the second matching structure by continuing to rotate the body along the second direction, so that the locking assembly is locked at the second position.

In one embodiment, the interlocking slot includes a first slot and a second slot communicating with one end of the first slot; the extending direction of the second groove is perpendicular to the extending direction of the first groove; when the locking assembly is switched between the second position and the first position, the first linkage part is abutted against the inner wall of the first groove so as to drive the locking assembly to move;

when the locking assembly reaches the first position, the first linkage part can be screwed into one end of the second groove by continuing to rotate the body along the first direction; and/or the presence of a gas in the gas,

when the locking assembly reaches the second position, the first linkage part can be screwed into the other end of the second groove by continuing to rotate the body in the second direction.

In one embodiment, the outer side surface of the first linkage part forms a first surface and a second surface which are mutually surrounded, the cross section profile of the first linkage part forms a first line corresponding to the first surface and a second line corresponding to the second surface, the first line is a major arc, and the curvature of the second line is smaller than that of the first line;

in the process that the locking assembly is switched between the second position and the first position, the first surface is abutted with the inner wall of the first groove so as to drive the locking assembly to move;

when the locking assembly reaches the first position, in the process that the body is continuously rotated along the first direction so that the first linkage part is screwed into one end of the second groove, the joint of the inner wall of the first groove and the inner wall of the second groove is opposite to the second surface, so that the second surface avoids the joint of the inner wall of the first groove and the inner wall of the second groove; and/or the presence of a gas in the gas,

when the locking assembly reaches the second position, in the process that the body is continuously rotated along the second direction so that the first linkage part is screwed into the other end of the second groove, the joint of the inner wall of the first groove and the inner wall of the second groove is opposite to the second surface, so that the second surface avoids the joint of the inner wall of the first groove and the inner wall of the second groove.

In an embodiment, a connection part of the inner wall of the second groove and the inner wall of the first groove forms an inclined surface inclined to the inner wall of the first groove, so that when the first linkage part is screwed into the second groove, the first linkage part is matched with the second groove.

In an embodiment, the limiting structure is a limiting boss arranged on the body, the first matching structure is a first notch arranged on the locking assembly, and the limiting boss is used for matching with the first notch; and/or the presence of a gas in the gas,

the limiting structure is a limiting boss arranged on the body, the second matching structure is a second notch arranged on the locking assembly, and the limiting boss is used for being matched with the second notch.

In one embodiment, a guide hole is formed in the locking assembly, a guide piece matched with the guide hole is arranged on the mounting portion, and the guide hole limits the guide piece to move relative to the locking assembly along the length direction of the guide hole.

In one embodiment, the locking assembly comprises:

the connecting part is connected with the first linkage part and is driven by the first linkage part; and

the locking part is fixedly connected with the connecting part and is used for matching with the matching structure or releasing the matching structure, and the position of the locking part relative to the connecting part can be adjusted along the direction perpendicular to the linear path.

In one embodiment, the connecting portion is provided with a slide groove extending in a direction perpendicular to the linear path, and the locking portion is engaged with the slide groove and is capable of adjusting a position by sliding along the slide groove;

the locking device for the sliding door and window further comprises an adjusting screw, the locking portion and the connecting portion are connected and driven through the adjusting screw, and the adjusting screw can drive the locking portion to slide along the sliding groove when rotating.

In one embodiment, the locking assembly has a locking hook, and the mating structure is a latch; or, the locking component is provided with a lock catch, and the matching structure is a lock hook;

the lock hook hooks the lock catch when the locking assembly is in the first position, and the lock hook releases the lock catch when the locking assembly is in the second position.

Drawings

FIG. 1 is a schematic structural diagram of a locking device according to an embodiment;

FIG. 2 is a partial exploded view of the locking device of FIG. 1;

FIG. 3 is an exploded view of the locking device of FIG. 1;

FIG. 4 is a schematic structural view of a connecting portion of the locking assembly of FIG. 1;

FIG. 5 is a schematic structural view of the transmission assembly of FIG. 1;

FIG. 6 is a partial schematic view of the coupling portion of the locking assembly of FIG. 4;

FIG. 7a is a schematic view of the locking assembly of FIG. 1 releasing the mating structure;

FIG. 7b is a schematic view of the locking assembly of FIG. 1 in engagement with a mating structure;

fig. 8a to 8i are schematic views illustrating a process of changing the position of the first interlocking part and the position of the first interlocking part in the interlocking groove in the process of moving the locking assembly from the second position to the first position.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, 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 the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, an embodiment of the present application provides a locking device 100 for a sliding door. The lock device 100 includes: a mounting portion 110, a transmission assembly 120, and a locking assembly 130.

The mounting portion 110 is used for being fixedly connected with a door leaf and a window leaf of a sliding door and window. The transmission assembly 120 is rotatably coupled to the mounting portion 110. The locking assembly 130 is coupled to the transmission assembly 120 such that the locking assembly 130 is coupled to the door and window sash. The locking assembly 130 has a first position and a second position. In the first position, the locking assembly 130 is locked with a mating structure 140 secured to the sash frame of the sliding door. In the second position, the locking assembly 130 releases the mating structure 140. The rotation of the transmission assembly 120 moves the locking assembly 130 such that the locking assembly 130 switches between the first position and the second position along a linear path.

Specifically, the door sash of the sliding door is pushed and pulled in a direction close to the door sash frame, so that the door sash can be closed, and at this time, the door sash is unlocked from the door sash frame, and the locking assembly 120 is in the second position. The locking assembly 130 can be engaged with the engagement structure 140 on the door and window frame by rotating the driving assembly 120 such that the driving assembly 120 moves the locking assembly 130 along a linear path from the second position to the first position, so as to lock the door and window sash to the door and window frame. If the door and window sash needs to be unlocked from the door and window frame, the transmission assembly 120 is rotated, so that the transmission assembly 120 drives the locking assembly 130 to switch from the first position to the second position along a linear path, and the locking assembly 130 releases the matching structure 140, so as to unlock the door and window sash from the door and window frame.

The locking device 100 for the sliding door is configured such that the driving unit 120 and the locking unit 130 are mounted to the door sash of the sliding door through the mounting unit 110. Through rotating the transmission assembly 120 to drive the locking assembly 130 to switch between the first position and the second position along a linear path, the matching structure 140 on the locking assembly 130 and the door and window frame can be matched or released, so that the door and window sash and the door and window frame can be locked or unlocked, the anti-theft function of the sliding door and window can be realized conveniently, and the locking device 100 is simple in structure, few in parts, few in processing procedures and convenient to assemble.

Referring to fig. 2 and 3, in an embodiment, the transmission assembly 120 includes a body 121 and a first linkage portion 122. The body 121 is rotatably coupled to the mounting portion 110. The first linking part 122 is fixedly connected to the body 121, so that the locking assembly 130 is driven by the first linking part 122 when the body 121 rotates.

Specifically, referring to fig. 3, the body 121 is provided with a connection hole 101, and the mounting portion 110 is provided with a connection shaft 111. The connecting shaft 111 is located in the connecting hole 101 and is engaged with the connecting hole 101, so that the body 110 can rotate relative to the mounting portion 110 by rotating relative to the connecting shaft 111.

In this embodiment, the first linking part 122 is a boss protruding from the body 121, and the first linking part 122 and the body 121 may be integrally formed. Referring to fig. 4, the locking assembly 130 is provided with a linking groove 102. The first linking portion 122 is engaged with the linking groove 102, and when the body 121 rotates relative to the mounting portion 110, the first linking portion 122 abuts against the inner wall of the linking groove 102 to drive the locking assembly 130 to move.

Referring to fig. 2 and 3, in an embodiment, the locking assembly 130 includes a connecting portion 131 and a locking portion 132. The connecting portion 131 is connected to the first linking portion 122 and driven by the first linking portion 122. The locking part 132 is fixedly connected with the connecting part 131, and the locking part 132 is used for matching with the matching structure 140 or releasing the matching structure 140.

Specifically, referring to fig. 4, the linking groove 102 is disposed on the connecting portion 131. When the body 121 rotates, the first linking portion 122 is engaged with the linking groove 102, so as to drive the connecting portion 131 to move, and the connecting portion 131 drives the locking portion 132 to move along a linear path synchronously, so that the locking portion 132 is engaged with the engaging structure 140 or releases the engaging structure 140.

Referring to fig. 2 and 3, in an embodiment, the locking assembly 130 is provided with a guide hole 105, the mounting portion 110 is provided with a guide member 112 engaged with the guide hole 105, and the guide hole 105 limits the guide member 112 to move relative to the locking assembly 130 along the length direction of the guide hole 105.

Specifically, the connection portion 131 has a middle portion and extension arms extending from the middle portion to both ends. The intermediate portion is fixedly connected to the locking portion 132. The two extension arms are respectively provided with a guide hole 105. In this embodiment, the guide 112 is a screw. The mounting portion 110 is provided with a fixing base 112 a. The fixing base 112a is provided with a screw hole. The guide 112 is engaged with the fixing table 112a through the screw hole.

The guide holes 105 are strip-shaped holes. The guide member 112 extends through the guide hole 105 and is adapted to the width of the guide hole 105, such that when the locking assembly 130 moves, the guide hole 105 can limit the relative movement of the guide member 112 and the connecting portion 131 along the length direction of the guide hole 105, and thus limit the movement of the locking assembly 130 along a linear path along the length direction of the guide hole 105.

Referring to fig. 7a and 7b, in an embodiment, the locking assembly 130 has a locking hook 133, and the mating structure 140 is a locking buckle.

Specifically, referring to fig. 2 and 3, in the present embodiment, the locking portion 132 has a locking hook 133. The shackle 133 catches the catch when the locking assembly 130 is in the first position, such that the locking assembly 130 is locked with the mating structure 140. The shackle 133 releases the catch when the locking assembly 130 is in the second position, such that the locking assembly 130 releases the mating structure 140.

It is understood that in other embodiments, the mating structure 140 may be a hook, the locking assembly 130 may have a latch, and the locking assembly 130 may also lock or release the mating structure 140 with the mating structure 140.

Referring to fig. 2, in an embodiment, the locking portion 132 can be adjusted in position relative to the connecting portion 131 along a direction perpendicular to the linear path.

Referring to fig. 4 in conjunction with fig. 1 to 3, in the present embodiment, the connecting portion 131 is provided with a sliding slot 106 extending along a direction perpendicular to the linear path. The locking portion 132 is engaged with the chute 106, and the locking portion 132 can be adjusted in position by the chute in the extending direction of the chute 106. The locking device 100 further comprises an adjustment screw 150. The locking part 132 is coupled and driven with the coupling part 131 by an adjustment screw 150. The locking portion 132 can be slid along the slide slot 106 by rotating the adjustment screw 150.

Specifically, the bottom wall of the chute 106 has a half-hole. The surface of the locking portion 132 opposite to the bottom wall of the chute 106 has a half hole. Referring to fig. 1, the bottom wall of the chute 106 is matched with a half hole of the surface of the locking part 132 to form a threaded hole 107. Since the sliding groove 106 can limit the locking part 132 to move only along the extending direction of the sliding groove 106, and the adjusting screw 150 is engaged with the threaded hole 107, the locking part 132 can be prevented from moving along the extending direction of the sliding groove 106, and the locking part 132 can be fixedly connected with the connecting part 131.

By rotating the adjusting screw 150, the adjusting screw 150 can drive the locking portion 132 to move along the extending direction of the sliding slot 106, so that the position of the locking portion 132 can be adjusted, and the locking portion 132 can be conveniently matched with the matching structure 140.

In one embodiment, when the body 121 rotates along the first direction, the first linking portion 122 drives the locking assembly 130 to move from the second position to the first position. When the body 121 rotates in a second direction opposite to the first direction, the first linking portion 122 drives the locking assembly 130 to move from the first position to the second position.

Referring to fig. 7a and 7b, in the present embodiment, the first direction is a counterclockwise direction, and the second direction is a clockwise direction. When the body 121 is rotated in the counterclockwise direction, the locking assembly 130 can be moved upward to a first position locked with the mating structure 140. When the body 121 is rotated in the clockwise direction, the locking assembly 130 can be moved downward to a second position releasing the engagement structure 140.

Referring to fig. 5, the body 121 is provided with a position-limiting structure 1211. Referring to fig. 4, the locking assembly 130 is provided with a first engaging structure 103. When the locking assembly 130 reaches the first position, the stop 1211 can be engaged with the first engagement structure 103 by continuing to rotate the body 121 in the first direction such that the locking assembly 130 is locked in the first position.

In this embodiment, the position-limiting structure 1211 is disposed on the position-limiting boss of the body 121. The first mating structure 103 is a first notch formed on the locking assembly 130. As shown in fig. 5, the stop 1211 may be an annular stop boss. When the locking assembly 130 reaches the first position, by continuing to rotate the body 121 in the first direction, one end of the annular boss rotates to be inserted into the first notch, so that the one end of the annular boss is clamped into the first notch, the locking assembly 130 is locked at the first position, and the door and window sash and the door and window frame can be reliably locked by the locking assembly 130.

Referring to fig. 4, in an embodiment, the locking assembly 130 is provided with a second engaging structure 104. When the locking assembly 130 reaches the second position, the stop 1211 can be engaged with the second engagement structure 104 by continuing to rotate the body 121 in the second direction, such that the locking assembly 130 is locked in the second position.

In this embodiment, the position-limiting structure 1211 is a position-limiting boss disposed on the body 121. The second mating structure 104 is a second notch formed on the locking assembly 130. As shown in fig. 5, the stop 1211 may be an annular stop boss. When the locking assembly 130 reaches the second position, the body 121 continues to rotate in the second direction, and then the other end of the annular boss rotates to be inserted into the second notch, so that the other end of the annular boss is clamped into the second notch, and the locking assembly 130 is locked at the second position, thereby preventing the door and window frame and the door and window sash from being mistakenly locked when the locking assembly 130 is in the unlocked state.

In addition, in the present embodiment, the door sash is closed when pushed and pulled to the right and opened when pushed and pulled to the left. Thus, as shown in fig. 7a and 7b, the locking device 100 is located on the left side of the mating portion 140.

In other embodiments, when the door sash is closed by pushing and pulling it leftward and opened by pushing and pulling it rightward, the locking device 100 and the mating portion 140 may be installed in opposite directions, i.e., the locking device 100 is located at the right side of the mating portion 140. It can be understood that, in the case that the locking device 100 is installed in the opposite direction to the matching portion 140, when the body 121 rotates in the clockwise direction, the locking assembly 130 moves upward to the position locked with the matching structure 140, and when the body 121 continues to rotate in the clockwise direction, the stopper structure 1211 is matched with the second matching structure 104, so that the locking assembly 130 is locked in the position locked with the matching structure 140. Therefore, since the body 121 can be rotated in the first direction or the second direction to make the position-limiting structure 1211 engage with the first engaging structure 103 or engage with the second engaging structure 104, the locking assembly 130 can be locked in the position locked with the engaging structure 140 when the locking device 100 is installed with the engaging structure 140 in the forward direction or in the reverse direction.

Referring to fig. 1 and 2, in one embodiment, the transmission assembly 120 further includes a handle 123. The handle 123 is fixedly connected with the body 121. The handle 123 and the body 121 may be integrally formed. The body 121 is conveniently rotated by rotating the handle 123, so that the first linkage portion 122 is conveniently rotated to move the locking assembly 130.

Referring to fig. 2, in an embodiment, the transmission assembly 120 further includes an elastic member 160. The body 121 remains in abutment with the resilient member 160 during rotation.

Specifically, in the present embodiment, the elastic member 160 is a spring plate. Two connection posts (not shown) are provided on the mounting portion 110. The two ends of the spring piece hook one connecting column respectively, so that the two ends of the spring piece are connected with one connecting column respectively. The spring piece is positioned on one side of the body 121 opposite to the handle 123 and keeps abutting against the body 121 when the body 121 rotates, so that the handle 123 can be rotated to have hand feeling feedback.

Referring to fig. 4 and 6, in an embodiment, the linking groove 102 includes a first groove 102a and a second groove 102 b. The second groove 102b communicates with one end of the first groove 102 a. The extending direction of the second groove 102b is perpendicular to the extending direction of the first groove 102 a.

Since fig. 8a to 8i illustrate the position change process of the first interlocking part 122 and the interlocking groove 102 during the process of moving the locking assembly 130 from the second position to the first position. The first interlocking part 122 and the position change process in the interlocking groove 102 are performed during the process of moving the locking assembly 130 from the first position to the second position as seen in the opposite direction from fig. 8i to 8 a.

Referring to fig. 8b to 8h, in the process of switching the locking assembly 130 between the second position and the first position, the first linking portion 122 abuts against the inner wall of the first groove 102a to drive the locking assembly 130 to move.

Specifically, the extending direction of the first groove 102a is perpendicular to the moving direction of the locking assembly 130 along the linear path, so that the first linkage portion 122 abuts against the inner wall of the first groove 102a to drive the locking assembly 130 to move along the linear path.

Referring to fig. 8h to 8i, when the locking assembly 130 reaches the first position, the body 121 is rotated in the first direction to rotate the first linking part 122 into one end of the second slot 102 b. When the locking assembly 130 reaches the second position, the first interlocking part 122 can be screwed into the other end of the second groove 102b by continuing to rotate the body 121 in the second direction.

Specifically, when the locking assembly 130 reaches the first position, the stop 1211 can be engaged with the first engagement structure 103 by continuing to rotate the body 121 in the first direction, such that the locking assembly 130 is locked in the first position. When the body 121 continues to rotate in the first direction, the first linking part 122 is screwed into one end of the second groove 102b, so that one end of the second groove 102b can be free from the first linking part 122, and a space for the first linking part 122 to continue to rotate in the first direction is provided, and the limiting structure 1211 can be matched with the first matching structure 103.

Referring to fig. 8b to 8a, when the locking assembly 130 reaches the second position, the limiting structure 1211 can be engaged with the second engaging structure 104 by continuing to rotate the body 121 in the second direction, so that the locking assembly 130 is locked at the second position. When the body 121 continues to rotate in the second direction, the first linking portion 122 is screwed into the other end of the second slot 102b, so that the other end of the second slot 102b can avoid the first linking portion 122, so as to provide a space for the first linking portion 122 to continue to rotate in the second direction, and further enable the limiting structure 1211 to be matched with the second matching structure 104.

Referring to fig. 5, in an embodiment, an outer side surface of the first linkage portion 122 is formed to surround the first surface 1221 and the second surface 1222. The cross-section of the first linkage 122 is contoured to form a first line corresponding to the first surface 1221 and a second line corresponding to the second surface 1222. The first line is a major arc, and the curvature of the second line is smaller than that of the first line.

Since the first surface 1221 is an arc surface corresponding to the major arc, when the first linking portion 122 rotates with the body 121, the first surface 1221 can be kept abutting against the inner wall of the first groove 102a, so as to drive the locking assembly 130 to move.

When the locking assembly 130 reaches the first position, the connection between the inner wall of the first slot 102a and the inner wall of the second slot 102b is opposite to the second surface 1222 by continuing to rotate the body 121 in the first direction so that the first linkage 122 is screwed into the end of the second slot 102b, so that the second surface 1222 is free from the connection between the inner wall of the first slot 102a and the inner wall of the second slot 102 b.

When the locking assembly 130 reaches the second position, the connection between the inner wall of the first slot 102a and the inner wall of the second slot 102b is opposite to the second surface 1222 by continuing to rotate the body 121 in the second direction so that the first linkage 122 is screwed into the other end of the second slot 102b, so that the second surface 1222 is free from the connection between the inner wall of the first slot 102a and the inner wall of the second slot 102 b.

Specifically, as shown in fig. 4 and 6, the junction of the inner wall of the first groove 102a and the inner wall of the second groove 102b forms a corner. Since the curvature of the second line corresponding to the second surface 1222 is smaller, the second surface 1222 is not blocked by the connection between the inner wall of the first groove 102a and the inner wall of the second groove 102b in the process of entering the second groove 102b through the connection between the inner wall of the first groove 102a and the inner wall of the second groove 102b, so that the second surface 1222 can avoid the connection between the inner wall of the first groove 102a and the inner wall of the second groove 102 b. It is understood that the second surface 1222 may be a curved surface with a smaller curvature. In an extreme case, the second surface 1222 may also be planar.

Referring to fig. 4 and 6, in an embodiment, an inclined surface 102c inclined to the inner wall of the first groove 102a is formed at a connection position of the inner wall of the second groove 102b and the inner wall of the first groove 102a, so that the first linkage portion 122 is adapted to the second groove 102b when the first linkage portion 122 is screwed into the second groove 102 b. It is understood that the junction of the inner wall of the second groove 102b and the inner wall of the first groove 102a may also form a right angle.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A locking device for a sliding door or window, comprising:

the transmission assembly is rotatably connected with the mounting part; and

2. A locking device for sliding doors and windows according to claim 1, characterised in that said transmission assembly comprises:

the body is rotatably connected with the mounting part; and

3. A locking device for a sliding door or window according to claim 2, wherein the locking member has a cooperating slot which cooperates with the first cooperating portion such that rotation of the first cooperating portion moves the locking member.

4. The locking device of claim 3, wherein the first linkage portion moves the locking assembly from the second position to the first position when the body is rotated in a first direction, and the first linkage portion moves the locking assembly from the first position to the second position when the body is rotated in a second direction opposite the first direction; the body is provided with a limiting structure;

5. A locking device for a sliding door or window according to claim 4, wherein the cooperating slot comprises a first slot and a second slot communicating with one end of the first slot; the extending direction of the second groove is perpendicular to the extending direction of the first groove; when the locking assembly is switched between the second position and the first position, the first linkage part is abutted against the inner wall of the first groove so as to drive the locking assembly to move;

6. The locking device for a sliding door and window according to claim 5, wherein an outer side surface of the first linkage portion is formed to surround a first surface and a second surface, a cross-sectional profile of the first linkage portion is formed to have a first line corresponding to the first surface and a second line corresponding to the second surface, the first line is a major arc, and a curvature of the second line is smaller than a curvature of the first line;

7. The locking device for a sliding door and window of claim 5, wherein the limiting structure is a limiting boss disposed on the body, the first mating structure is a first notch disposed on the locking assembly, and the limiting boss is configured to mate with the first notch; and/or the presence of a gas in the gas,

8. A locking arrangement for a sliding door or window according to claim 1, wherein the locking assembly is provided with a guide aperture and the mounting portion is provided with a guide which engages with the guide aperture, the guide aperture limiting relative movement of the guide with the locking assembly along the length of the guide aperture.

9. A locking arrangement for a sliding door or window according to claim 1, wherein the locking assembly comprises:

10. The locking device for sliding doors and windows according to claim 9,

the connecting part is provided with a sliding groove extending along a direction perpendicular to the linear path, and the locking part is matched with the sliding groove and can adjust the position by sliding along the sliding groove;