Lock latch combination

Abstract

The utility model discloses a plunger latch combination which comprises a plunger latch module and a driving module. The plunger latch module comprises a plunger latch cylinder, a plunger latch head movably arranged on the plunger latch cylinder, a connecting plate connected to the plunger latch head, and a linkage piece clamped on the connecting plate and provided with a groove. One end of the linkage piece abuts against the plunger latch cylinder. The driving module comprises a driving plate abutting against the linkage piece, a driving piece and a shell used for containing the driving plate and the driving piece. The shell is provided with a first cover plate and a second cover plate, and the first cover plate is provided with an extending structure which is bent relative to the first cover plate and penetrates through the groove. When the driving piece is rotated, the driving plate is moved to drive the linkage piece to deflect, so that the linkage piece moves the plunger latch head from an extension position to a contraction position relative to the plunger latch cylinder through the connecting plate.

Description

Technical Field

[0001] The utility model relates to a latch assembly, in particular to a latch assembly with an improved structure. Background Art

[0002] Generally speaking, the latch assembly of a lock is connected to a handle via a drive shaft. When the user presses or turns the handle, the handle drives the latch head of the latch assembly to move to a retracted position via the drive shaft to allow the user to open the door. In order to meet different usage requirements, existing latch assemblies have different designs. For example, in order to allow the handle to rotate at a smaller angle, some existing latch assemblies are equipped with a small-angle drive mechanism; in order to match door panels with different door margins, some existing latch assemblies are equipped with an adjustable installation mechanism. However, the structure of the existing latch assembly is complex and may not work properly due to poor assembly or component size errors. Utility Model Content

[0003] The purpose of the utility model is to provide a latch assembly to solve the problems of the prior art.

[0004] The adjustable latch assembly of the utility model comprises a latch module and a driving module. The latch module comprises a latch cylinder, a latch head, a connecting plate and a linkage plate. The latch head is movably arranged on the latch cylinder along the axial direction of the latch cylinder. The connecting plate is connected to the latch head. The linkage plate is engaged with the connecting plate and formed with a groove, wherein one end of the linkage plate abuts against the latch cylinder. The driving module comprises a driving plate abutting against the linkage plate, a driving member forming a driving shaft hole for allowing a driving shaft to pass through, and a shell connected to the latch cylinder and used to accommodate the driving plate and the driving member. The shell has a first cover plate and a second cover plate, and one end of the main body of the first cover plate is formed with an extension structure which is bent at a predetermined angle relative to the main body of the first cover plate and passes through the groove. When the driving member is driven by the driving shaft to rotate, the driving plate is moved to drive the linking plate to swing, so that the linking plate moves the latch head relative to the latch tube from an extended position to a retracted position via the connecting plate.

[0005] In an embodiment of the present invention, the extension structure includes a first extension section bent at the predetermined angle relative to the first cover plate, and a second extension section extending from the first extension section along the axial direction of the latch tube toward the latch head.

[0006] In an embodiment of the present invention, the first extension section passes through the groove and abuts against the bottom of the groove.

[0007] In an embodiment of the present invention, the predetermined angle is between 2 degrees and 5 degrees.

[0008] In an embodiment of the present invention, the latch assembly further comprises a spindle-shaped spring sleeved on the extension structure for abutting against the latch head and the housing.

[0009] In an embodiment of the present invention, the connecting plate is formed with a V-shaped groove for engaging with the latch head.

[0010] In an embodiment of the present invention, the connecting plate has a first side and a second side opposite to each other, the first side faces the driving plate and is formed with a protruding structure, and the second side is formed with a concave structure.

[0011] In one embodiment of the utility model, the second cover plate is formed with at least one groove, and the driving plate has at least one first pushed structure and at least one second pushed structure against the at least one groove; wherein when the driving member is located at a first driving position relative to the shell and when the driving member is rotated, the driving member is used to push the first pushed structure to move the driving plate; wherein when the driving member is located at a second driving position relative to the shell and when the driving member is rotated, the driving member is used to push the second pushed structure to move the driving plate.

[0012] In one embodiment of the utility model, the latch assembly further includes an extension shell movably disposed on the shell, for moving the driving member between the first driving position and the second driving position relative to the shell; wherein the shell is formed with at least one first positioning structure and at least one second positioning structure, and the extension shell is formed with at least one extended positioning structure; wherein when the driving member is located at the first driving position relative to the driving plate, the first positioning structure is used to engage with the extended positioning structure; wherein when the driving member is located at the second driving position relative to the driving plate, the second positioning structure is used to engage with the extended positioning structure.

[0013] In one embodiment of the utility model, the second cover plate is formed with an opening, and the hole wall of the opening is formed with a guide structure; wherein when the driving member is at an initial angle relative to the guide structure, the driving member can move between the first driving position and the second driving position relative to the shell; wherein when the driving member is not at the initial angle relative to the guide structure, the driving member is blocked by the guide structure to avoid the driving member from moving between the first driving position and the second driving position relative to the shell.

[0014] In one embodiment of the utility model, the latch assembly further includes an anti-theft module. The anti-theft module includes an anti-theft latch that can move relative to the latch head, the anti-theft latch is formed with a rectangular notch; a stopper is formed with a rectangular opening; an anti-theft spring has two opposite ends that respectively abut against the anti-theft latch and the stopper; and a positioning pin has a rectangular cross-section corresponding to the rectangular notch and the rectangular opening, and the positioning pin passes through the rectangular opening. When the anti-theft latch moves to a predetermined position relative to the latch head, the stopper is used to swing to prevent the latch head from moving from the extended position to the retracted position relative to the latch tube.

[0015] Compared with the prior art, the latch module of the latch assembly of the present invention has a lever mechanism, so that the user can open the door by turning the handle at a smaller angle. Furthermore, the drive module of the latch assembly of the present invention can adjust the position of the drive shaft hole of the drive member to match door panels with different door margins. Furthermore, the latch assembly of the present invention has a simple structure and high stability, which can avoid the problem that the latch assembly cannot operate normally due to poor assembly or component size errors.

[0016] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the latch assembly of the utility model.

[0018] Figure 2 It is an exploded view of the latch assembly of the utility model.

[0019] Figure 3 It is a schematic diagram of the latch assembly of the utility model before being extended.

[0020] Figure 4 It is a schematic diagram of the lock bolt assembly of the utility model after extension.

[0021] Figure 5 It is a schematic diagram of the first cover plate of the latch assembly of the utility model.

[0022] Figure 6 It is a schematic diagram of the first cover plate and the driving member of the latch assembly of the utility model.

[0023] Figure 7 It is a cross-sectional view of the first cover plate and the driving member of the latch assembly of the utility model.

[0024] Figure 8 It is a schematic diagram of the second cover plate and the driving member of the latch assembly of the utility model.

[0025] Fig. 9 It is a schematic diagram of the first cover plate and the second cover plate of the latch assembly of the utility model.

[0026] Fig.10 It is a schematic diagram of a connecting plate of the latch assembly of the utility model.

[0027] Fig.11 It is a schematic diagram of the anti-theft mechanism of the adjustable latch assembly of the utility model.

[0028] Among them, the reference numerals

[0029] 10 Latch combination

[0030] 100 Latch module

[0031] 110 Latch Cylinder

[0032] 112 Concave structure

[0033] 120 Latch Head

[0034] 130 Connecting plate

[0035] 132 V-shaped groove

[0036] 134 Raised structure

[0037] 136 Concave structure

[0038] 140 Linkage

[0039] 142 Grooves

[0040] 143 Groove bottom

[0041] 150 Fixed plate

[0042] 160 Elastic parts

[0043] 170 Anti-theft latch

[0044] 171 Rectangular gap

[0045] 172 Anti-theft spring

[0046] 174 Locating pin

[0047] 176 Stopper

[0048] 177 Rectangular opening

[0049] 200 Driver Module

[0050] 210 Shell

[0051] 212 First cover

[0052] 212a First cover body

[0053] 213 Opening

[0054] 214 Second cover

[0055] 215 Opening

[0056] 216 Extension Structure

[0057] 216a First extension

[0058] 216b Second extension

[0059] 217 Guidance Structure

[0060] 218 groove

[0061] 219a First positioning structure

[0062] 219b Second positioning structure

[0063] 220 driver board

[0064] 222 The first inferred structure

[0065] 224 Second Inferred Structure

[0066] 230 Drive parts

[0067] 230a, 230b drive unit

[0068] 232 Drive shaft hole

[0069] 234 Drive Structure

[0070] 240 Extension housing

[0071] 242 Extended positioning structure

[0072] A Predetermined angle

[0073] D1 First drive position

[0074] D2 Second drive position

[0075] P1 Extended position

[0076] P2 retracted position

[0077] S side surface DETAILED DESCRIPTION

[0078] The structural principle and working principle of the utility model are described in detail below in conjunction with the accompanying drawings:

[0079] Please also refer to Figures 1 to 4 . Figure 1 Schematic diagram of the latch assembly of the utility model. Figure 2 This is an exploded view of the latch assembly of the utility model. Figure 3This is a schematic diagram of the utility model before the latch assembly is extended. Figure 4 1 is a schematic diagram of the extended latch assembly of the present invention. In order to facilitate the description of the internal structure of the latch assembly 10 of the present invention, Figure 3 and Figure 4 The latch assembly 10 in the figure is partially cut away. As shown in the figure, the latch assembly 10 of the utility model comprises a latch module 100 and a driving module 200. The latch module 100 comprises a latch cylinder 110, a latch head 120, a connecting plate 130 and a linkage plate 140. The latch head 120 is movably disposed on the latch cylinder 110 along the axial direction of the latch cylinder 110. The latch head 120 can move between an extended position P1 and a retracted position P2 relative to the latch cylinder 110. When the front end of the latch head 120 is located at the extended position P1, the latch head 120 is used to extend into a groove of a door frame (not shown) to prevent the door from being opened; when the front end of the latch head 120 is located at the retracted position P2, the latch head 120 is retracted into the latch cylinder 110 to allow the door to be opened. The connecting plate 130 is fixedly connected to the latch head 120 to move synchronously with the latch head 120. The linking plate 140 is locked to the connecting plate 130, and the linking plate 140 is formed with a groove 142. In addition, one end of the linking plate 140 is against the latch cylinder 110. In the embodiment of the utility model, one end of the linking plate 140 is against the concave structure 112 of the latch cylinder 110, but the present invention is not limited thereto. In the embodiment of the utility model, the latch cylinder 110 can also be configured with other types of structures (such as ribs) to abut against one end of the linking plate 140.

[0080] On the other hand, the latch module 100 may further include a fixing plate 150 and an elastic member 160. The fixing plate 150 is fixedly connected to the latch cylinder 110 to install the latch assembly 10 on a door. The elastic member 160 is used to provide an elastic force to push the latch head 120 to move toward the extended position P1.

[0081] The driving module 200 includes a housing 210, a driving plate 220 and a driving member 230 (in the embodiment of the present utility model, the driving member 230 is composed of two driving units 230a and 230b, but the present utility model is not limited thereto). The housing 210 is connected to the latch cylinder 110. The housing 210 is used to accommodate the driving plate 220 and the driving member 230. The housing 210 includes a first cover plate 212 and a second cover plate 214 located on opposite sides of the housing 210. The first cover plate 212 and the second cover plate 214 are respectively formed with openings 213 and 215. An extension structure 216 is formed at one end of the body 212a of the first cover plate 212 to pass through the groove 142 of the linkage plate 140. The driving plate 220 is movably disposed on the housing 210 along the axial direction of the latch cylinder 110, and one end of the driving plate 220 abuts against the linkage plate 140. The driving plate 220 has at least one first push structure 222 and at least one second push structure 224 (in the embodiment of the present utility model, the driving plate 220 has two first push structures 222 and two second push structures 224, but the present utility model is not limited thereto). The driving member 230 is formed with a driving shaft hole 232 and a driving structure 234. The driving shaft hole 232 is used to allow a driving shaft to pass through (not shown). The driving shaft is used to connect to the inner handle and the outer handle of the door. When the user turns the inner handle or the outer handle, the driving shaft drives the driving member 230 to rotate.

[0082] On the other hand, the driving module 200 further includes an extension housing 240 movably disposed on the housing 210. The extension housing 240 is used to move the driving member 230 between a first driving position D1 and a second driving position D2 relative to the housing 210. When the driving member 230 is located at the first driving position D1 (eg, Figure 3 ), the driving structure 234 of the driving member 230 corresponds to the first pushed structure 222 of the driving plate 220. When the driving member 230 is located at the second driving position D2 relative to the housing 210 (as shown in FIG. Figure 4 As shown), the driving structure 234 of the driving member 230 corresponds to the second pushed structure 224 of the driving plate 220.

[0083] When the driving member 230 is located at the first driving position D1 relative to the housing 210 and when the driving member 230 is rotated by the driving shaft, the driving structure 234 of the driving member 230 is used to push the first pushed structure 222 of the driving plate 220 to move the driving plate 220 away from the latch cylinder 110 along the axial direction of the latch cylinder 110; when the driving member 230 is located at the second driving position D2 relative to the housing 210 and when the driving member 230 is rotated by the driving shaft, the driving structure 234 of the driving member 230 is used to push the second pushed structure 224 of the driving plate 220 to move the driving plate 220 away from the latch cylinder 110 along the axial direction of the latch cylinder 110. When the driving plate 220 moves along the axial direction of the latch cylinder 110, one end of the driving plate 220 pulls the linking plate 140, thereby allowing the linking plate 140 to deflect (along the inner concave structure 112 of the latch cylinder 110) with the inner concave structure 112 of the latch cylinder 110 as a fulcrum. Figure 3 and Figure 4 When the linking plate 140 is swung, the linking plate 140 pulls the connecting plate 130 along the axial direction of the latch cylinder 110 to further move the latch head 120 from the extended position P1 to the retracted position P2 relative to the latch cylinder 110. In this way, the user can open the door.

[0084] According to the above configuration, the present invention utilizes the lever mechanism between the driving plate 220, the linkage plate 140 and the connecting plate 130 to move the latch head 120, and the moving distance of the driving plate 220 is smaller than the moving distance of the connecting plate 130. Therefore, the latch assembly 10 of the present invention allows the user to turn the inner handle or the outer handle at a smaller angle to open the door. In addition, the extended housing 240 of the latch assembly 10 of the present invention can move the driving member 230 between the first driving position D1 and the second driving position D2 relative to the housing 210, so that the driving shaft hole 232 of the driving member 230 can correspond to the position of different handle mounting holes on the door. In other words, the latch assembly 10 of the present invention can be used with door panels with different door margins.

[0085] On the other hand, when the user releases the inner handle or the outer handle, the inner handle or the outer handle rotates to the initial position. Furthermore, since the elastic member 160 abuts against the latch head 120 and the housing 210, the elastic force of the elastic member 160 pushes the latch head 120 to move the latch head 120 from the retracted position P2 to the extended position P1.

[0086] Please refer to Figures 5 to 7 , and refer to Figures 1 to 4 . Figure 5 2 is a schematic diagram of the first cover plate 212 of the latch assembly of the present invention. Figure 6 2 is a schematic diagram of the first cover plate 212 and the driving member 230 of the latch assembly of the present invention. Figure 72 is a cross-sectional view of the first cover plate 212 and the driving member 230 of the latch assembly of the present invention. As shown in the figure, the extension structure 216 of the first cover plate 212 includes a first extension section 216a and a second extension section 216b. The first extension section 216a is bent at a predetermined angle A relative to the body 212a of the first cover plate 212. The second extension section 216b extends from the first extension section 216a along the axial direction of the latch cylinder 110 toward the latch head 120. In the embodiment of the present invention, the predetermined angle A is between 2 degrees and 5 degrees, but the present invention is not limited thereto. Preferably, the predetermined angle A is between 3 degrees and 4 degrees.

[0087] The first extension section 216a of the extension structure 216 of the first cover plate 212 passes through the groove 142 of the linking plate 140 and abuts against the bottom 143 of the groove 142. The surface of the bottom 143 of the groove 142 extends along the width direction of the first extension section 216a to increase the contact area between the bottom 143 of the groove 142 and the first extension section 216a. The design of the first extension section 216a abutting against the bottom 143 of the groove 142 when the linking plate 140 deflects can prevent the linking plate 140 from shaking left and right along the direction R relative to the first extension section 216a. Furthermore, the design of the first extension section 216a bending relative to the body 212a of the first cover plate 212 can increase the contact area between the first extension section 216a and the side surface of the groove 142, which can prevent the linking plate 140 from shaking up and down when the linking plate 140 deflects, thereby increasing the stability of the linking plate 140 when it deflects. In addition, in the embodiment of the present invention, the elastic member 160 is a spindle spring (as shown in FIGS. 2 to 4 ) sleeved on the extension structure 216 to resist the latch head 120 and the housing 210, thereby providing an elastic force to push the latch head 120 to move toward the extended position P1. It is worth mentioning that the design of the first extension section 216a of the first cover plate 212 being bent at a predetermined angle A relative to the body 212a of the first cover plate 212 can form a larger space between the second extension section 216b and the connecting plate 130 for the elastic member 160 to be disposed.

[0088] Please refer to Figure 8 , and refer to Figures 1 to 4 . Figure 82 is a schematic diagram of the second cover plate 214 and the driving member 230 of the latch assembly of the present invention. As shown in the figure, a guide structure 217 is formed on the hole wall of the opening 215 of the second cover plate 214 corresponding to the side surface S of the driving unit 230a of the driving member 230. When the driving member 230 is at an initial angle relative to the guide structure 217 (before the driving member 230 is rotated), the side surface S of the driving unit 230a is parallel to the surface of the guide structure 217, so that the driving member 230 can move between the first driving position D1 and the second driving position D2 relative to the housing 210. When the driving member 230 is not at the initial angle relative to the guide structure 217 (after the driving member 230 is rotated), the driving unit 230a will be blocked by the guide structure 217 to prevent the driving member 230 from moving between the first driving position D1 and the second driving position D2 relative to the housing 210.

[0089] According to the above configuration, the latch assembly 10 of the present invention can only adjust the position of the driving member 230 when the driving member 230 is not rotated. Furthermore, when the driving member 230 is rotated, the guide structure 217 can increase the stability of the driving member 230 during rotation.

[0090] Please refer to Fig. 9 , and refer to Figures 1 to 4 . Fig. 9 2 is a schematic diagram of the first cover plate 212 and the second cover plate 214 of the latch assembly of the present invention. As shown in the figure, the second cover plate 214 is formed with at least one groove 218. In the embodiment of the present invention, the second cover plate 214 is formed with two grooves 218, but the present invention is not limited thereto. The first push structure 222 and the second push structure 224 of the driving plate 220 are used to abut against the groove 218 of the second cover plate 214 (please also refer to Figure 2 ). When the driving member 230 is rotated to push the driving plate 220, the groove 218 can increase the stability of the driving plate 220 when it moves, so as to prevent the driving structure 234 of the driving member 230 from being separated from the first pushed structure 222 or the second pushed structure 224 of the driving plate 220 due to poor assembly or component size error (for example, the groove 218 can prevent the first pushed structure 222 or the second pushed structure 224 from being separated from the second cover plate 214 during the rotation of the driving member 230, causing the driving structure of the driving member 230 to pass through the gap and rotate to the first pushed structure 222 or the second pushed structure 224 that is separated from the driving plate 220). In addition, the first cover plate 212 is formed with at least one first positioning structure 219a and at least one second positioning structure 219b (such as Figure 7 As shown), the extended housing 240 is formed with at least one extended positioning structure 241 (as shown Figure 2As shown). In the embodiment of the present utility model, the first cover plate 212 is formed with two first positioning structures 219a and two second positioning structures 219b, and the extension shell 240 is formed with two extension positioning structures 242 (due to viewing angle factors, Figure 2 only shows one extension positioning structure 242), but the present utility model is not limited to this. When the driving member 230 is located at the first driving position D1 relative to the driving plate 220, the first positioning structure 219a is used to engage with the extension positioning structure 242; when the driving member 230 is located at the second driving position D2 relative to the driving plate 220, the second positioning structure 219b is used to engage with the extension positioning structure 242. In the embodiment of the present utility model, the first positioning structure 219a and the second positioning structure 219b are recessed structures, and the extension positioning structure 241 is a protruding structure, but the present invention is not limited to this.

[0091] Please refer to Fig.10 , and refer to Figures 1 to 4 . Fig.10 Schematic diagram of the connecting plate of the latch assembly of the present invention. As shown in the figure, the connecting plate 130 is formed with a V-shaped groove 132 for engaging with the latch head 120. For example, the present invention can use a stamping method to rivet the latch head 120 to the V-shaped groove 132 of the connecting plate 130 to increase the connection strength and stability between the connecting plate 130 and the latch head 120. In addition, the connecting plate 130 has a first side and a second side opposite to each other. The first side of the connecting plate 130 faces the driving plate 220 and is formed with a protruding structure 134 (as shown in FIG. 8), and the second side of the connecting plate 130 is formed with a recessed structure 136 (as shown in FIG. 2). The protruding structure 134 can reduce the contact area between the connecting plate 130 and the driving plate 220, thereby reducing the friction between the connecting plate 130 and the driving plate 220, and increasing the structural strength of the connecting plate 130.

[0092] Please refer to Fig.11 , and refer to Figures 1 to 4 . Fig.11Schematic diagram of the anti-theft mechanism of the adjustable latch assembly of the utility model. As shown in the figure, the latch module 100 may further include an anti-theft latch 170, an anti-theft spring 172, a positioning pin 174 and a stopper 176. The anti-theft latch 170 can move relative to the latch head 120, and the anti-theft latch 170 is formed with a rectangular notch 171. The anti-theft spring 172 has two opposite ends respectively against the anti-theft latch 170 and the stopper 176. The stopper 176 is formed with a rectangular opening 177. The positioning pin 174 has a rectangular cross-section corresponding to the rectangular notch 171 of the anti-theft latch 170 and the rectangular opening 177 of the stopper 176, and the positioning pin 174 passes through the rectangular opening 177. When the anti-theft latch 170 moves to a predetermined position relative to the latch head 120 (the anti-theft latch 170 is pressed downward relative to the latch head 120), the stopper 176 is used to swing to prevent the latch head 120 from moving from the extended position P1 to the retracted position P2 relative to the latch cylinder 110. The rectangular cross-section design of the positioning pin 174 of the utility model can increase the stability of the anti-theft latch 170 and the stopper 176 during operation. On the other hand, the recessed structure 136 of the connecting plate 130 can increase the movable space of the stopper 176.

[0093] Compared to the prior art, the latch module 100 of the latch assembly 10 of the present invention has a lever mechanism, so that the user can turn the handle at a smaller angle to open the door. Furthermore, the drive module 200 of the latch assembly 10 of the present invention can adjust the position of the drive shaft hole 232 of the drive member 230 to match door panels with different door margins. Furthermore, the latch assembly 10 of the present invention has a simple structure and high stability, which can avoid the problem that the latch assembly cannot operate normally due to poor assembly or component size errors.

[0094] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A latch assembly, characterized in that: Include: A latch module, comprising: a latch cylinder; a latch head movably disposed on the latch cylinder along the axial direction of the latch cylinder; a connecting plate connected to the latch head; and a linking plate, which is locked on the connecting plate and formed with a groove, wherein one end of the linking plate abuts against the latch cylinder; and A driver module, comprising: A driving plate abuts against the linkage plate; a driving member having a driving shaft hole formed therein for allowing a driving shaft to pass therethrough; and A housing connected to the latch cylinder and used to accommodate the drive plate and the drive member, the housing having a first cover plate and a second cover plate, an extension structure formed at one end of the main body of the first cover plate, bent at a predetermined angle relative to the main body of the first cover plate and passing through the groove; When the driving member is driven by the driving shaft to rotate, the driving plate is moved to drive the linking plate to swing, so that the linking plate moves the latch head relative to the latch tube from an extended position to a retracted position via the connecting plate.

2. The latch assembly according to claim 1, wherein: The extended structure comprises: a first extension section, bent at the predetermined angle relative to the first cover plate; and A second extension section extends from the first extension section along the axial direction of the latch tube toward the latch head.

3. The latch assembly according to claim 2, characterized in that: The first extension section passes through the groove and abuts against the bottom of the groove.

4. The latch assembly according to claim 1, wherein: The predetermined angle is between 2 degrees and 5 degrees.

5. The latch assembly according to claim 1, wherein: The invention also comprises a spindle-shaped spring which is sleeved on the extension structure and is used for abutting against the latch head and the housing.

6. The latch assembly according to claim 1, wherein: The connecting plate is formed with a V-shaped groove for clamping with the latch head.

7. The latch assembly according to claim 1, wherein: The connecting plate has a first side and a second side opposite to each other. The first side faces the driving plate and is formed with a protruding structure, and the second side is formed with a concave structure.

8. The latch assembly according to claim 1, wherein: The second cover plate is formed with at least one groove, and the driving plate has at least one first pushed structure and at least one second pushed structure against the at least one groove; wherein when the driving member is located at a first driving position relative to the housing and when the driving member is rotated, the driving member is used to push the first pushed structure to move the driving plate; When the driving member is located at a second driving position relative to the housing and when the driving member is rotated, the driving member is used to push the second pushed structure to move the driving plate.

9. The latch assembly according to claim 8, wherein: It also includes an extension shell movably disposed on the shell, for moving the driving member between the first driving position and the second driving position relative to the shell; wherein the shell is formed with at least one first positioning structure and at least one second positioning structure, and the extension shell is formed with at least one extension positioning structure; wherein when the driving member is located at the first driving position relative to the driving plate, the first positioning structure is used to engage with the extension positioning structure; wherein when the driving member is located at the second driving position relative to the driving plate, the second positioning structure is used to engage with the extension positioning structure.

10. The latch assembly according to claim 8, wherein: The second cover plate is formed with an opening, and the hole wall of the opening is formed with a guide structure; wherein when the driving member is at an initial angle relative to the guide structure, the driving member can move between the first driving position and the second driving position relative to the shell; wherein when the driving member is not at the initial angle relative to the guide structure, the driving member is blocked by the guide structure to avoid the driving member from moving between the first driving position and the second driving position relative to the shell.

11. The latch assembly according to claim 1, wherein: The latch module further comprises: An anti-theft latch moves relative to the latch head, and the anti-theft latch is formed with a rectangular notch; A stopper formed with a rectangular opening; An anti-theft spring having two opposite ends respectively abutting against the anti-theft latch and the blocking member; and A positioning pin having a rectangular cross-section corresponding to the rectangular notch and the rectangular opening, the positioning pin passing through the rectangular opening; When the anti-theft latch moves to a predetermined position relative to the latch head, the blocking member is used to swing to prevent the latch head from moving from the extended position to the retracted position relative to the latch tube.

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