Latch, door and window

Abstract

The present invention discloses a latch, comprising: a base for embedding into doors and windows; a driving part connected to the base in a slidable manner along a first direction, and a first guide member is provided on one side of the base; a first connecting plate, comprising a first and a second part, one end of the first part is rotatably connected to the first guide member, and the other end is slidably connected to the base along a third direction; a second connecting plate, comprising a third and a fourth part, one end of the third part is superimposed on one end of the first part, and is rotatably connected to the first guide member, and the other end is slidably connected to the base along the third direction; the driving part can enable the first guide member to drive the second and fourth parts to move toward or away from each other along the third direction, so that the latch switches between an open state and a closed state; in the open state, the latch locks the doors and windows and the door and window frames. The latch of the present invention is easy to install and operate, has a low cost and is highly aesthetic. The present invention also provides a door and a window to which the latch is applied.

Description

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on April 24, 2024, with application number 202420870595.5 and application name “A Latch, Door and Window”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present invention relates to the technical field of hardware products, in particular to a latch, a door and a window. Background Art

[0003] Latches are widely used in doors, windows, furniture, and other fields, primarily to secure doors and windows to their frames. For example, double-doors, designed with a wide double-door structure (i.e., a wider main door and a narrower sub-door), allow for selective opening and closing of the sub-doors during daily use. Typically, latches are used to lock the sub-doors.

[0004] Existing latches are designed to be pulled up and down, typically with two pull-type latches installed at the top and bottom of the sub-door. This requires operating each pull-type latch separately, which is particularly inconvenient when the door leaf is high. Furthermore, the pull-type latches are large in size, affecting the aesthetics of the door leaf, and are also expensive to manufacture. Summary of the Invention

[0005] The present invention aims to solve the problems of existing sub-door latches that are inconvenient to operate, large in size and high in cost. The present invention provides a latch that is easy to install and operate, low in cost and highly aesthetic.

[0006] To solve the above technical problems, an embodiment of the present invention discloses a latch, comprising:

[0007] A base, used for embedding into a door or window sash along a first direction;

[0008] a driving portion, the driving portion being connected to the base in a slidable manner along the first direction, and a first guide member being provided on one side of the driving portion along the second direction;

[0009] a first connecting plate comprising a first portion and a second portion connected to each other, wherein one end of the first portion is rotatably connected to the first guide member, and the other end of the first portion is slidably connected to the base along a third direction;

[0010] The second connecting plate includes a third portion and a fourth portion connected to each other, one end of the third portion being superimposed on one end of the first portion, one end of the third portion being rotatably connected to the first guide member, and the other end of the third portion being slidably connected to the base along the third direction; the first direction, the second direction, and the third direction intersect each other;

[0011] The driving portion is capable of moving relative to the base in the first direction, so that the first guide member can drive the second portion and the fourth portion to move toward or away from each other in the third direction, so that the latch switches between an open state and a closed state;

[0012] In the open state, along the third direction, the latch is used to lock the door leaf and the door frame, or to lock the window leaf and the window frame;

[0013] In the closed state, along the third direction, the latch is used to separate the door leaf from the door frame, or to separate the window leaf from the window frame.

[0014] Using the above technical solution, the latch of the embodiment of the present application includes a base for embedding in a door or window, a driving portion that can slide relative to the base, and a first connecting plate and a second connecting plate that can be driven by a first guide member of the driving portion to move toward or away from each other. First, during installation, compared to traditional latches that require holes to be opened at the upper and lower ends of the door or window sash and respectively assembled with pull-type latches, the latch of the embodiment of the present application only requires the base to be embedded in any position of the door or window sash, which is simple to install. Moreover, when the door or window sash is higher, it does not need to be installed at the upper end of the door or window sash, which facilitates installation and subsequent use. At the same time, it is more beautiful than traditional latches.

[0015] Secondly, when in use, compared with traditional latches that require separate operation of the two latches at the upper and lower ends of the door or window sash, the latch of the embodiment of the present application only needs to move along the first direction through the driving part, so that the second part of the first connecting plate and the fourth part of the second connecting plate can move toward or away from each other, so that the latch can switch between the open state and the closed state. Accordingly, the latch in the open state can lock the door sash and the door frame (or the window sash and the window frame), and the latch in the closed state can separate the door sash and the door frame (or the window sash and the window frame). The operation of the latch of the embodiment of the present application is simple and convenient.

[0016] In addition, the above-mentioned driving part, first connecting plate and second connecting plate are all arranged in the base and installed in the door or window together with the base, which is relatively integrated. Therefore, the overall size of the bolt is small and the cost is low.

[0017] According to another specific embodiment of the present invention, the second portion of the first connecting plate is provided with a first locking member, and the fourth portion of the second connecting plate is provided with a second locking member, and the first locking member and the second locking member extend along the third direction respectively, wherein,

[0018] The driving portion is capable of moving inwardly along the first direction to drive the first locking member and the second locking member to move toward each other to switch to the closed state;

[0019] The driving portion can move outward along the first direction to drive the first locking member and the second locking member to move away from each other to switch to the open state.

[0020] With the above technical solution, the second portion of the first connecting plate and the fourth portion of the second connecting plate can move toward or away from each other along the third direction under the action of the driving unit. At the same time, a first locking member and a second locking member (such as a lock tongue) are respectively provided on the second portion and the fourth portion. When the latch is in the closed state, the first locking member and the second locking member approach each other along the third direction. At this time, relative to the door leaf, the first locking member and the second locking member are located inside the door leaf and are not plugged into the door frame. When the latch is in the open state, the first locking member and the second locking member move away from each other along the third direction. At this time, relative to the door leaf, the first locking member and the second locking member extend out of the door leaf and plug into the door frame to achieve the fixation of the door leaf and the door frame.

[0021] According to another specific embodiment of the present invention, the latch also includes a plate body, which is used to be fixed to the outer wall of the side frame of the door or window sash, the plate body is connected to the base, and the driving part is embedded in the plate body and can move relative to the plate body along the first direction.

[0022] By adopting the above technical solution, after the latch of the embodiment of the present application is embedded in the door or window sash, it can be fixed to the door or window sash through the plate, for example, by using screw connection, welding and other processes.

[0023] According to another specific embodiment of the present invention, the latch also includes an elastic member, which extends along the first direction, and the base includes a first base. One end of the elastic member is connected to the first base, and the other end of the elastic member is connected to the driving part; the elastic member can drive the driving part to move outward along the first direction to switch the latch to the open state.

[0024] By adopting the above-mentioned technical solution, the driving part of the embodiment of the present application can, for example, move outward in the first direction through the elastic member. That is, one end of the elastic member can be fixed to the first base, and the other end of the elastic member can be fixed to the driving part. Then, when the driving part moves inward along the first direction (for example, the driving part is pressed inward relative to the door leaf), the elastic member is compressed and can drive the driving part in the opposite direction (that is, outward along the first direction) to the initial position, so as to realize the reciprocating motion of the driving part in the first direction.

[0025] According to another specific embodiment of the present invention, the driving portion includes a button, the first guide member is protruded from the button, the base includes a second base, and the first guide member can slide along the first direction relative to the second base.

[0026] According to another specific embodiment of the present invention, the base is provided with a first guide groove, the first guide groove extends along the first direction, and the first guide member of the driving portion can slide along the first guide groove; the first portion of the first connecting plate is provided with a second guide groove, and the second guide groove extends along a fourth direction; the third portion of the second connecting plate is provided with a third guide groove, and the third guide groove extends along a fifth direction; the fourth direction and the fifth direction are symmetrically arranged relative to the first direction; wherein,

[0027] In the open state, one end of the second guide groove is rotatably connected to the first guide member, and one end of the third guide groove is rotatably connected to the first guide member;

[0028] The first guide member is capable of moving along the first guide groove so that the second guide groove is capable of moving along the fourth direction relative to the first guide member, and the third guide groove is capable of moving along the fifth direction relative to the first guide member to drive the second part of the first connecting plate and the fourth part of the second connecting plate to move toward or away from each other.

[0029] According to another specific embodiment of the present invention, the base is provided with a fourth guide groove and a fifth guide groove, the fourth guide groove and the fifth guide groove extend along the third direction and are respectively located on both sides of the first guide groove; the other end of the first part is provided with a second guide member, and the second guide member can slide along the fourth guide groove; the other end of the third part is provided with a third guide member, and the third guide member can slide along the fifth guide groove.

[0030] An embodiment of the present invention further discloses a door, comprising a door leaf, a door frame, and the latch according to any one of the above embodiments, wherein the door leaf is connected to the door frame, and the latch is embedded in a side frame of the door leaf.

[0031] According to another specific embodiment of the present invention, in the open state, the first locking member of the first connecting plate and the second locking member of the second connecting plate extend out of the door leaf along the third direction and are respectively clamped at the upper and lower ends of the door frame; in the closed state, the first locking member and the second locking member retract into the door leaf along the third direction and are respectively separated from the upper and lower ends of the door frame.

[0032] An embodiment of the present invention further discloses a window, comprising a window sash, a window frame, and the latch according to any one of the above embodiments, wherein the window sash is connected to the window frame, and the latch is embedded in the side frame of the window sash. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A three-dimensional schematic diagram of a door according to an embodiment of the present invention is shown; wherein the figure shows a latch according to an embodiment of the present application.

[0034] Figure 2 A top view of a latch according to an embodiment of the present invention is shown.

[0035] Figure 3 A schematic structural diagram of a latch according to an embodiment of the present invention is shown.

[0036] Figure 4 A cross-sectional view showing a latch according to an embodiment of the present invention Figure 1 ; Among them, the figure shows a first locking member and a second locking member.

[0037] Figure 5 A cross-sectional view showing a latch according to an embodiment of the present invention Figure 2 ; Among them, the figure shows the open state of the latch.

[0038] Figure 6 A cross-sectional view showing a latch according to an embodiment of the present invention Figure 3 ; Among them, the figure shows the closed state of the latch.

[0039] Figure 7 A cross-sectional view showing a latch according to an embodiment of the present invention Figure 4 ; wherein, an elastic member is shown in the figure.

[0040] In the figure: 1. latch; 2. base; 21. first base; 22. second base; 221. first guide groove; 222. fourth guide groove; 223. fifth guide groove; 3. driving part; 31. button; 32. first guide member; 4. first connecting plate; 41. first part; 411. second guide groove; 42. second part; 421. first locking member; 43. second guide member; 44. third guide member; 5. second connecting plate; 51. third part; 511. third guide groove; 52. fourth part; 521. second locking member; 6. plate; 7. elastic member; 100. door; 110. door leaf; 120. door frame. DETAILED DESCRIPTION

[0041] The following is an explanation of the embodiments of the present invention by specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiment is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will contain many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0042] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0043] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0044] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0045] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0046] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0047] See Figures 1 to 4 ,in, Figure 1 The following is an exemplary diagram showing an application scenario of the latch 1 according to an embodiment of the present application; Figure 2 Schematically shows a top view of the latch 1 according to an embodiment of the present application; Figure 3 The following is a schematic diagram showing the structure of the latch 1 according to an embodiment of the present application; Figure 4 A cross-sectional view of the latch 1 according to an embodiment of the present application is shown as an example.

[0048] The embodiment of the present application provides a latch 1 which can be used, for example, Figure 1 The fixing between the door leaf 110 (such as the sub-door in the double door) and the door frame 120 is applied in the following embodiments. Figure 1 The door 100 shown is an example and will be described later. However, the application scenarios of the latch 1 in the embodiment of the present application are not limited thereto. For example, the latch 1 can also be used to fix a window sash (such as one of the sashes in a double-opening window) and a window frame.

[0049] The following is a detailed description of the latch 1 of the embodiment of the present application. Figures 1 to 4 The latch 1 includes a base 2, a driving portion 3, a first connecting plate 4 and a second connecting plate 5.

[0050] The base 2 is the supporting part of the entire latch 1. When in use, the base 2 needs to be moved along a first direction (for example, the width direction of the door leaf 110, such as Figure 1 、 Figure 3 and Figure 4 Y direction shown in the figure) is embedded in the side frame of the door leaf 110.

[0051] At the same time, the driving unit 3 moves in a first direction (eg Figure 1 、 Figure 3 and Figure 4 The driving portion 3 is connected to the base 2 in a slidable manner in the Y direction shown in FIG. 1 , that is, the driving portion 3 can move relative to the base 2 along the Y direction shown in FIG. Figure 3 and Figure 4 Move back and forth in the Y direction shown. Figure 1 and Figure 3 A first guide member 32 is provided on one side of the driving portion 3 (in the X direction shown in FIG).

[0052] Exemplarily, the first guide member 32 is a steel ball or a pin, but the embodiment of the present application does not limit this. As long as it can slide relative to the base 2 in the first direction with the driving part 3, it falls within the protection scope of the embodiment of the present application.

[0053] Continue reading Figures 1 to 4 Furthermore, the first connecting plate 4 and the second connecting plate 5 are both rotatably connected to the first guide member 32. It is understandable that, for example, the first connecting plate 4 is first rotatably connected to the first guide member 32, and then the second connecting plate 5 is superimposed on the first connecting plate 4 and is also rotatably connected to the first guide member 32.

[0054] The first connecting plate 4 includes a first portion 41 (such as Figure 4 The second connecting plate 5 includes a third part 51 and a fourth part 52 connected thereto (shown as a dotted line part) and a second part 42.

[0055] For example, Figure 4 As shown, the first connecting plate 4 and the second connecting plate 5 are each irregularly Y-shaped, but this embodiment of the present application does not limit this. For example, this embodiment of the present application does not limit the angle between the first portion 41 and the second portion 42, and the angle between the third portion 51 and the fourth portion 52.

[0056] One end of the first portion 41 (i.e. Figure 4 The end indicated by the direction a in the middle) is rotatably connected to the first guide member 32, and the other end of the first part 41 (i.e. Figure 4 b) along the third direction (such as Figure 4 The Z direction shown in FIG) is connected to the base 2 in a slidable manner. One end of the third part 51 (i.e. Figure 4 The end indicated by the direction c in the middle) is overlapped with one end of the first portion 41 (i.e. Figure 4 One end of the third portion 51 is rotatably connected to the first guide member 32, and the other end of the third portion 51 (ie Figure 4 The end indicated by the direction d in the middle) along the third direction (such as Figure 4 The base 2 is slidably connected to the base 2 in the Z direction shown in FIG.

[0057] Based on this, first, the driving part 3 can move relative to the base 2 along a first direction (such as Figure 1 、 Figure 3 and Figure 4 The first guide member 32 drives the second portion 42 of the first connecting plate 4 and the fourth portion 52 of the second connecting plate 5 to move toward or away from each other along the third direction, thereby switching the latch 1 between the open state and the closed state.

[0058] See Figure 5 and combined Figure 1 , Figure 5 The latch 1 is shown in an open state as an example, that is, after the second portion 42 of the first connecting plate 4 and the fourth portion 52 of the second connecting plate 5 of the latch 1 move away from each other along the third direction, they can be in an open state. Figure 5 The open state shown, at this time, along the third direction (such as Figure 1 and Figure 5 The latch 1 can lock the door leaf 110 and the door frame 120.

[0059] See Figure 6 and combined Figure 1 , Figure 6 The closed state of the latch 1 is shown as an example, that is, after the first connecting plate 4 and the second connecting plate 5 of the latch 1 move toward each other along the third direction, they can be in the closed state. Figure 6 The closed state shown, at this time, along the third direction (such as Figure 1 and Figure 6 The latch 1 can separate the door leaf 110 and the door frame 120.

[0060] See Figures 1 to 6 , adopting the above technical solution, the latch 1 of the embodiment of the present application includes a base 2 for embedding in a door or window, a driving part 3 that can slide relative to the base 2, and a first connecting plate 4 and a second connecting plate 5 that can be driven by a first guide member 32 of the driving part 3 to move toward or away from each other. First of all, during installation, compared to traditional latches that require holes to be opened at the upper and lower ends of the door leaf 110 or window leaf and respectively assembled with pull-type latches, the latch 1 of the embodiment of the present application only needs to embed the base 2 at any position of the door leaf 110 or window leaf, which is simple to install; moreover, when the door leaf 110 or window leaf is higher, it does not need to be installed at the upper end of the door leaf 110 or window leaf, which facilitates installation and subsequent use, and is also more beautiful than the traditional latch 1.

[0061] Secondly, during use, compared with traditional latches that require separate operation of the two latches at the upper and lower ends of the door leaf 110 or window leaf, the latch 1 of the embodiment of the present application only needs to move along the first direction through the driving part 3, so that the second part 42 of the first connecting plate 4 and the fourth part 52 of the second connecting plate 5 can move toward or away from each other, so that the latch 1 can switch between the open state and the closed state. Accordingly, the latch 1 in the open state can lock the door leaf 110 and the door frame 120 (or the window leaf and the window frame), and the latch 1 in the closed state can separate the door leaf 110 and the door frame 120 (or the window leaf and the window frame). The operation of the latch 1 of the embodiment of the present application is simple and convenient.

[0062] In addition, the above-mentioned driving part 3, first connecting plate 4, and second connecting plate 5 are all arranged in the base 2, and are installed in the door leaf 110 or window leaf together with the base 2, with a smaller size and lower cost.

[0063] See Figure 4 and combined Figure 5 and Figure 6 In a possible embodiment, the second portion 42 of the first connecting plate 4 is provided with a first locking member 421 (e.g., a locking tongue), and the fourth portion 52 of the second connecting plate 5 is provided with a second locking member 521 (e.g., a locking tongue). The first locking member 421 and the second locking member 521 are respectively arranged along the third direction (e.g., Figure 4 The Z direction shown in FIG extends.

[0064] When the driving part 3 moves inward along the first direction (such as Figure 4The Y1 direction shown in FIG, that is, relative to Figure 1 When the door leaf 110 shown in FIG. 1 moves inwardly), the second portion 42 of the first connecting plate 4 and the fourth portion 52 of the second connecting plate 5 can be driven to move toward each other along the third direction, thereby driving the first locking member 421 connected to the second portion 42 and the second locking member 521 connected to the fourth portion 52 to move toward each other, so that the entire latch 1 is switched to the above-mentioned closed state (such as Figure 6 The door can now be opened.

[0065] When the driving part 3 moves outward along the first direction (such as Figure 4 The Y2 direction shown in FIG, that is, relative to Figure 1 When the door leaf 110 shown in the figure moves outward), the second portion 42 of the first connecting plate 4 and the fourth portion 52 of the second connecting plate 5 can be driven to move in opposite directions along the third direction, thereby driving the first locking member 421 connected to the second portion 42 and the second locking member 521 connected to the fourth portion 52 to move in opposite directions, so that the entire latch 1 is switched to the above-mentioned open state (such as Figure 5 As shown), the door 100 is now locked.

[0066] See Figures 1 to 4 In a possible embodiment, the latch 1 further includes a plate 6, the base 2 is connected to the plate 6, and the plate 6 is used to be fixed to the outer wall of the side frame of the door leaf 110. That is, after the base 2 of the latch 1 is embedded in the door leaf 110, the plate 6 is supported on the outer wall of the side frame of the door leaf 110, and then the plate 6 is fixed to the outer wall. Figure 2 Two screw holes 60 are shown as an example, that is, for example, the plate body 6 and the door leaf 110 can be fixed by bolts, but the embodiment of the present application does not limit this. At the same time, the driving part 3 is also embedded in the plate body 6 and can be moved relative to the plate body 6 along the first direction (such as Figure 1 、 Figure 3 and Figure 4 Y direction) movement shown in FIG.

[0067] See Figure 3 and Figure 7 In a possible implementation, the latch 1 of the embodiment of the present application further includes an elastic member 7 (such as a spring). The elastic member 7 moves in a first direction (such as Figure 3 and Figure 7 The base 2 includes a first base 21 (eg, a spring fixing seat). It can be seen that one end of the elastic member 7 (ie, Figure 3 The end indicated by the Y1 direction in the middle) is fixed to the first base 21, and the other end of the elastic member 7 (ie Figure 3 The end indicated by the Y2 direction in the figure) is connected to the above-mentioned driving part 3.

[0068] According to the above, the driving part 3 can move outward along the first direction. That is, when the driving part 3 moves inward along the first direction (such as Figure 3 When the elastic member 7 moves in the Y1 direction shown in FIG, the elastic member 7 is compressed, and then the elastic force of the elastic member 7 drives the driving portion 3 outward along the first direction (as shown in FIG. Figure 3 Y2 direction shown in FIG) to move the latch 1 to the above-mentioned open state (as shown in FIG). Figure 5 shown).

[0069] In a possible embodiment, the driving part 3 includes a button 31, and the first guide member 32 is protruded from the button 31. The base 2 also includes a second base 22 (such as a button fixing seat) for fixing the button 31. The first guide member 32 can be relative to the second base 22 along a first direction (such as Figure 3 and Figure 7 Slide in the Y direction shown in FIG.

[0070] See Figures 4 to 7 In a possible embodiment, the base 2 is provided with a first guide groove 221, and the first guide groove 221 is along the first direction (such as Figure 4 The first guide member 32 of the button 31 extends in the Y direction shown in FIG, and the first guide member 32 of the button 31 can slide along the first guide groove 221.

[0071] The first portion 41 of the first connecting plate 4 (such as Figure 4 and Figure 5 The dotted line portion shown in FIG. 1 is provided with a second guide groove 411, which is provided along the fourth direction (eg Figure 4 and Figure 5 The E direction shown in FIG extends.

[0072] Correspondingly, the third portion 51 of the second connecting plate 5 is provided with a third guide groove 511, and the third guide groove 511 is arranged along the fifth direction (eg Figure 4 and Figure 5 The fourth direction and the fifth direction extend relative to the first direction (as shown in the F direction). Figure 4 and Figure 5 The Y direction shown in FIG is symmetrically arranged; wherein,

[0073] In the above open state (such as Figure 5 As shown), one end of the second guide groove 411 (ie Figure 5 The end indicated by the direction a in the middle) is rotatably connected to the first guide member 32, and one end of the third guide groove 511 (i.e. Figure 5 The end indicated by the direction c in the middle) is rotatably connected to the first guide member 32.

[0074] As can be seen from the foregoing, the other end of the first portion 41 (i.e. Figure 5 b) along the third direction (such as Figure 5 The Z direction shown in FIG) is slidably connected to the base 2, and the other end of the third part 51 (ie Figure 5 The end indicated by the direction d in the middle) is connected to the base 2 in a slidable manner along the third direction.

[0075] For example, the other end of the first portion 41 (ie Figure 5 The end of the third portion 51 (the end indicated by the direction b) is provided with a second guide member 43, and the other end of the third portion 51 (i.e. Figure 5 A third guide member 44 is provided at the end (in the direction d) of the base 2. Accordingly, the base 2 further defines a fourth guide groove 222 and a fifth guide groove 223. Both fourth and fifth guide grooves 222 and 223 extend along the third direction and are located on either side of the first guide groove 221. Consequently, the second guide member 43 can slide along the fourth guide groove 222, and the third guide member 44 can slide along the fifth guide groove 223.

[0076] Exemplarily, the second guide member 43 and the third guide member 44 are steel balls or pins, but the embodiment of the present application does not limit this. As long as they can slide along the fourth guide groove 222 and the fifth guide groove 223 respectively, they are within the protection scope of the embodiment of the present application.

[0077] For example, Figures 4 to 7 It is shown by way of example that the first guide groove 221, the second guide groove 411, the third guide groove 511, the fourth guide groove 222, and the fifth guide groove 223 are strip structures with semicircular ends and rectangular middles, but the embodiments of the present application are not limited to this. For example, they can also be set to rectangular, trapezoidal, and other shapes.

[0078] Based on this, see Figure 5 and combined Figure 6 , the first guide member 32 is Figure 5 The position shown is downward along the first guide groove 221 (as shown in FIG. Figure 5 The first portion 41 can move along the second guide groove 411 in a direction close to the plate 6 along the fourth direction (as shown in the Y1 direction). Figure 5 The third portion 51 can move in the direction of the plate 6 along the fifth direction (as shown in the a direction ... Figure 5 c direction shown in FIG) movement; At the same time, the other end of the first portion 41 (ie Figure 5 The second guide member 43 can be moved in a direction close to the fourth portion 52 along the fourth guide groove 222 (as shown in FIG. Figure 5 The other end of the third portion 51 (ie Figure 5 The end indicated by the direction d in the middle) can be moved in a direction close to the second portion 42 along the fifth guide groove 223 (such as Figure 5 Z2 direction shown in FIG) movement, thereby switching to Figure 6 Shown in closed state.

[0079] At this time, see Figure 6 and combined Figure 1 and Figure 4 The first locking member 421 connected to the second portion 42 and the second locking member 521 connected to the fourth portion 52 are moved along the third direction (eg Figure 6 When the door leaf 110 is retracted (in the Z direction shown in FIG), the door leaf 110 is separated from the door frame 120.

[0080] Further, see Figure 6 and combined Figure 5 , the first guide member 32 is Figure 6 The position shown is upward along the first guide groove 221 (as shown in FIG. Figure 6 The first portion 41 can move along the second guide groove 411 in a direction away from the plate 6 along the fourth direction (as shown in the Y2 direction). Figure 6 b direction shown in FIG), the third portion 51 can move along the third guide groove 511 away from the direction of the plate 6 along the fifth direction (as shown in FIG). Figure 6 At the same time, the other end of the first portion 41 (ie Figure 6 The second guide member 43 (the end indicated by the direction b in FIG) can be moved in a direction away from the fourth portion 52 along the fourth guide groove 222 (as shown in FIG. Figure 6 The other end of the third portion 51 (ie Figure 6 The end indicated by the direction d in the middle) can be moved in a direction away from the second portion 42 along the fifth guide groove 223 (such as Figure 6 Z1 direction shown in FIG) movement, thereby switching to Figure 5 Shown in open state.

[0081] At this time, see Figure 5 and combined Figure 1 and Figure 4 The first locking member 421 connected to the second portion 42 and the second locking member 521 connected to the fourth portion 52 are moved along the third direction (eg Figure 6 If the door leaf 110 is extended in the Z direction shown in FIG, the door leaf 110 is fixed to the door frame 120.

[0082] The following will provide further operation instructions in conjunction with the structural introduction of the latch 1 in the previous text.

[0083] See Figure 1 and Figure 5 , Figure 1 and Figure 5The latch 1 is shown in the open state (i.e., the initial state of the latch 1), that is, the second portion 42 of the first connecting plate 4 and the fourth portion 52 of the second connecting plate 5 are moved along the third direction (e.g., Figure 1 and Figure 5 110 along the Z direction shown in the figure) away from each other, then illustratively, the first locking member 421 connected to the second part 42 extends out of the top of the door leaf 110 along the third direction, and the second locking member (not shown in the figure) connected to the fourth part 52 extends out of the bottom of the door leaf 110 along the third direction (as shown in the figure). Figure 1 However, at this time, since the door leaf 110 is not closed relative to the door frame 120 and the first locking member 421 and the second locking member are not inserted into the door frame 120, the door leaf 110 can still move relative to the door frame 120.

[0084] When it is necessary to lock the door leaf 110 and the door frame 120, the following steps can be used:

[0085] Step S1: See Figure 1 , inward along the first direction (such as Figure 1 Y1 direction shown in FIG) press button 31;

[0086] Step S2: See Figure 5 Based on step S1, the first guide member 32 of the key 31 moves along Figure 5 The first portion 41 moves in the first guide groove 221 in the Y1 direction as shown. Figure 5 The second guide member 43 of the first portion 41 moves in the second guide groove 411 in the direction a shown in FIG. Figure 5 The third portion 51 moves in the fourth guide groove 222 in the Z1 direction shown. Figure 5 The third guide member 44 of the third portion 51 moves in the third guide groove 511 in the direction c shown. Figure 5 The Z2 direction shown moves in the fifth guide groove 223. Thus, the second part 42 and the fourth part 52 approach each other to switch to Figure 6 Shown in closed state.

[0087] See Figure 6 and combined Figure 1 , Figure 1 The first locking member 421 is shown along Figure 1 The door leaf 110 is retracted in the Z2 direction as shown, and the second locking member is moved along Figure 1The door leaf 110 is retracted in the Z1 direction as shown. For example, the first locking member 421 and the second locking member are completely located inside the door leaf 110. For another example, the first locking member 421 is spaced apart from the upper end 121 of the door frame 120, and the second locking member is spaced apart from the lower end 122 of the door frame 120. In other words, the first locking member 421 does not contact the upper end 121, and the second locking member does not contact the lower end 122.

[0088] Step S3 : Based on step S2 , the door leaf 110 is closed so as to be aligned with the upper end 121 and the lower end 122 of the door frame 120 .

[0089] It should be noted that after the door leaf 110 is closed, an operating space S is still left between the door leaf 110 and the door frame 120 along the first direction so that the button 31 can be operated. That is to say, door structures that still leave an operating space S in the first direction between the door leaf 110 and the door frame 120 after closing the door leaf 110 are within the application scope of the latch of the embodiment of the present application, such as the sub-door of a double door.

[0090] Step S4: See Figure 6 and combined Figure 7 , release button 31, Figure 7 The elastic member 7 shown is along Figure 7 The Y2 direction driving button 31 shown is shown in FIG. Figure 6 , the first guide member 32 of the button 31 is along Figure 6 The first portion 41 moves in the first guide groove 221 in the Y2 direction as shown. Figure 6 The second guide member 43 of the first portion 41 moves in the second guide groove 411 in the direction b shown. Figure 6 The third portion 51 moves in the fourth guide groove 222 in the Z2 direction shown. Figure 6 The third guide member 44 of the third portion 51 moves in the third guide groove 511 in the direction d shown. Figure 6 The Z1 direction shown moves in the fifth guide groove 223. Thus, the second portion 42 and the fourth portion 52 move away from each other to switch to Figure 5 Shown in open state.

[0091] See Figure 5 and combined Figure 1 , Figure 1 The first locking member 421 is shown along Figure 1 The door leaf 110 extends in the Z1 direction shown and is clamped to the upper end 121 of the door frame 120. The second locking member is arranged along the Figure 1 The door leaf 110 extends out in the Z2 direction and is engaged with the lower end 122 of the door frame 120 .

[0092] Step S5: Based on step S4, the door leaf 110 and the door frame 120 are now fixed.

[0093] When it is necessary to unlock the door leaf 110 and the door frame 120 , the above steps S1 and S2 can be repeated, and the door leaf 110 can be opened.

[0094] Although the present invention has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood by those skilled in the art that the above description is provided as a further detailed description of the present invention in conjunction with specific embodiments thereof, and that the specific implementation of the present invention is not limited to these descriptions. Those skilled in the art may make various changes in form and details, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A latch, characterized in that: include: A base, used for embedding into a door leaf or a window leaf along a first direction; A driving part, the driving part is connected to the base in a slidable manner along the first direction, and a first guide member is provided on one side of the driving part along the second direction; A first connecting plate comprises a first part and a second part connected to each other, wherein one end of the first part is rotatably connected to the first guide member, and the other end of the first part is slidably connected to the base along a third direction; The second connecting plate comprises a third part and a fourth part connected to each other, wherein one end of the third part overlaps one end of the first part, and one end of the third part is rotatably connected to the first guide member, and the other end of the third part is slidably connected to the base along the third direction; The first direction, the second direction, and the third direction intersect respectively; The driving part can move relative to the base along the first direction, so that the first guide member can drive the second part and the fourth part to move toward or away from each other along the third direction, so that the latch can switch between an open state and a closed state; In the open state, along the third direction, the latch is used to lock the door leaf and the door frame, or to lock the window leaf and the window frame; In the closed state, along the third direction, the latch is used to separate the door leaf from the door frame, or to separate the window leaf from the window frame.

2. The latch according to claim 1, characterized in that: The second portion of the first connecting plate is provided with a first locking member, and the fourth portion of the second connecting plate is provided with a second locking member, and the first locking member and the second locking member extend along the third direction respectively, wherein: The driving portion can move inwardly along the first direction to drive the first locking member and the second locking member to move toward each other to switch to the closed state; The driving portion can move outwardly along the first direction to drive the first locking member and the second locking member to move away from each other to switch to the open state.

3. The latch according to claim 1, characterized in that: The latch also includes a plate body, which is used to be fixed to the outer wall of the side frame of the door or window sash, the plate body is connected to the base, and the driving part is embedded in the plate body and can move relative to the plate body along the first direction.

4. The latch according to claim 2, characterized in that: The latch further includes an elastic member, the elastic member extends along the first direction, the base includes a first base, one end of the elastic member is connected to the first base, and the other end of the elastic member is connected to the driving part; The elastic member can drive the driving portion to move outward along the first direction so that the latch is switched to the open state.

5. The latch according to claim 4, characterized in that: The driving part includes a button, the first guide member is protruding from the button, the base includes a second base, and the first guide member can slide along the first direction relative to the second base.

6. The latch according to claim 1, characterized in that: The base is provided with a first guide groove, the first guide groove extends along the first direction, and the first guide member of the driving part can slide along the first guide groove; the first part of the first connecting plate is provided with a second guide groove, the second guide groove extends along the fourth direction; the third part of the second connecting plate is provided with a third guide groove, the third guide groove extends along the fifth direction; the fourth direction and the fifth direction are symmetrically arranged relative to the first direction; wherein, In the open state, one end of the second guide groove is rotatably connected to the first guide member, and one end of the third guide groove is rotatably connected to the first guide member; The first guide member can move along the first guide groove so that the second guide groove can move along the fourth direction relative to the first guide member, and the third guide groove can move along the fifth direction relative to the first guide member to drive the second part of the first connecting plate and the fourth part of the second connecting plate to move toward or away from each other.

7. The latch according to claim 6, characterized in that The base is provided with a fourth guide groove and a fifth guide groove, and the fourth guide groove and the fifth guide groove extend along the third direction and are respectively located on both sides of the first guide groove; the other end of the first part is provided with a second guide member, and the second guide member can slide along the fourth guide groove; the other end of the third part is provided with a third guide member, and the third guide member can slide along the fifth guide groove.

8. A door, characterized in that: It comprises a door leaf, a door frame and the latch according to any one of claims 1 to 7, wherein the door leaf is connected to the door frame, and the latch is embedded in the side frame of the door leaf.

9. The door according to claim 8, characterized in that In the open state, the first locking member of the first connecting plate and the second locking member of the second connecting plate extend out of the door leaf along the third direction and are respectively clamped at the upper and lower ends of the door frame; in the closed state, the first locking member and the second locking member retract into the door leaf along the third direction and are respectively separated from the upper and lower ends of the door frame.

10. A window, characterized in that: The invention comprises a window sash, a window frame and the latch according to any one of claims 1 to 7, wherein the window sash is connected to the window frame, and the latch is embedded in a side frame of the window sash.

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