Plane lock

Abstract

The utility model relates to a plane lock which comprises a lock shell with a handle groove in the front face, a handle capable of being buckled into the handle groove and a lock device for locking the handle, one end of the handle is installed on the lock shell in a pivoted mode through a pivot, the other end of the handle is an opening and closing end, and the lock device comprises a lock cylinder assembly and a lock hook assembly which are correspondingly matched. The handle is provided with a seat body which can be inserted into the handle groove in a protruding mode, the lock cylinder assembly is installed on the seat body, the lock hook assembly comprises a lock hook and a locking portion which are arranged on the handle and the lock shell respectively, and the lock hook is provided with an elastic reset component which drives a hook head of the lock hook to be buckled into the locking portion to achieve locking. The handle is provided with an outer unlocking component for shifting the lock hook to swing so as to enable the hook head to be separated from the locking part, the lock hook is pivotally mounted on the seat body through a rotating shaft, the lock hook is arranged on one side corresponding to the opening and closing end of the handle, and the hook head of the lock hook faces the direction opposite to the pivoting end of the handle; the locking part is arranged in the handle groove of the lock shell and located on the side corresponding to the opening and closing end of the handle. The lock hook has the advantages of reasonable structural design and stable and reliable locking.

Description

Technical Field

[0001] The utility model relates to a lock. Background Art

[0002] An existing plane lock, such as Figure 1 As shown, the lock hook is arranged in the handle groove of the lock shell, and the lock hook is arranged on the inner side of the handle groove. The lock hook is integrally formed for operating the inner opening push button of the lock hook. The lock core seat of the handle is provided with a locking part for the lock hook to be hung in and an unlocking part for pushing the lock head of the lock hook out of the locking part. The existing lock adopts the lock hook arranged in the handle groove of the lock shell, and is located on the inner side of the handle groove; under the structural design of the lock hook, the distance L1 between the locking point a of the lock hook and the opening b is large, and the tolerance fluctuation of the locking point matching has a great influence on the size of the opening; and the effective length of the engagement between the hook head and the locking part is short, which affects the locking reliability of the lock hook. Utility Model Content

[0003] The purpose of the utility model invention is to overcome the defects of the prior art, and to provide a plane lock with a reasonable lock hook structure design and stable and reliable locking.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The lock mechanism of the invention is a kind of planar lock, comprising a lock shell, a handle and a lock device, the lock shell has a handle groove on the front side, the handle can be buckled into the handle groove and locked by the lock device, one end of the handle is pivotally mounted on the lock shell via a pivot, and the other end of the handle is an opening and closing end that rotates around the pivot, the lock device comprises a corresponding lock core assembly and a lock hook assembly, the handle has a seat body that can be convexly inserted into the handle groove, the lock core assembly is mounted on the seat body, the lock hook assembly comprises a lock hook and a locking part that are respectively arranged on the handle and the lock shell, the lock hook is provided with an elastic reset component, the elastic reset component provides an elastic reset force that drives the hook head of the lock hook to buckle into the locking part to implement locking, and an external unlocking component that is driven to swing the lock hook to make the hook head escape from the locking part is provided on the handle, characterized in that: the lock hook is pivotally mounted on the seat body via a rotating shaft, and the lock hook is arranged on a side corresponding to the opening and closing end of the handle, the hook head of the lock hook faces in a direction opposite to one pivot end of the handle, and the locking part is arranged in the handle groove of the lock shell and is located on a side corresponding to the opening and closing end of the handle.

[0006] Preferably, the lock hook includes a hook arm with a hook head, a pivot mounting portion is provided on the end of the hook arm opposite to the hook head, the lock hook is installed on the seat body via the pivot mounting portion, an unlocking rocker arm is formed on the pivot mounting portion, an external unlocking component pushes the unlocking rocker arm to move the lock hook to swing and unlock, the lock hook is also provided with an internal unlocking component, the internal unlocking component is arranged on the back side of the lock shell, and the internal unlocking component is pushed and cooperated with the hook arm of the lock hook.

[0007] Preferably, the elastic reset member includes a reset torsion spring and a push rod assembly, the reset torsion spring is arranged at the pivot mounting portion of the lock hook, the elastic arms of the reset torsion spring are respectively supported on the seat body and the hook arm, the push rod assembly includes a reset push rod and a push rod spring, the reset push rod is slidably fitted on the seat body, one end of the reset push rod is in contact with the hook arm of the lock hook, and the other end of the reset push rod is in contact with the push rod spring.

[0008] Preferably, the inner unlocking component includes a push button slidably mounted on the lock shell, the sliding direction of the push button corresponds to the swinging direction of the lock hook, the push button abuts against a push button return spring, the push button is recessed with an avoidance groove and a push protrusion located on one side of the avoidance groove, the avoidance groove and the push protrusion correspond to the bottom of the locking part, when the hook head of the lock hook is buckled into the locking part, the hook head is located in the avoidance groove and corresponds to the push protrusion.

[0009] Preferably, the hook arm is in an arc shape, and the hook head protrudes toward the concave side of the hook arm.

[0010] Preferably, the seat body includes a main seat body protruding on the inner wall of the handle and having an opening at the bottom. The bottom opening cover of the main seat body is provided with a bottom plate. The main seat body has two vertical plates arranged opposite to each other. The vertical plates of the main seat body are provided with transverse pin holes, transverse pins and a bottom plate positioning structure. The bottom plate is provided with a pin shaft hole corresponding to the transverse pin hole. The bottom plate is positioned on the vertical plate through the bottom plate positioning structure. The transverse pin passes through the transverse pin hole and the pin shaft hole to fix the bottom plate to the main seat body.

[0011] Preferably, a pop-up mechanism is also provided in the handle groove, and the pop-up mechanism is arranged on one side of the handle groove close to the pivot end of the handle, the pop-up mechanism includes a pop-up block, and a pop-up spring is provided between the pop-up block and the bottom of the handle groove, and the pop-up block is configured to limit sliding in the handle groove along the depth direction of the handle groove. When the opening and closing end of the handle is buckled in the handle groove, the seat body contacts the pop-up block and compresses the pop-up spring to store energy, and the elastic storage capacity of the pop-up spring drives the handle to automatically pop out of the handle groove after being unlocked.

[0012] Preferably, the ejector block is arranged along the width direction of the handle groove, and includes ejector parts at both ends and a middle section connecting the two ejector parts. The middle section of the ejector block is retracted relative to the ejector parts in the length direction of the handle groove to form a space-avoiding recess.

[0013] Preferably, the middle section is provided with a positioning guide hole, and at least two positioning columns are protruding in the handle groove. The positioning guide hole of the middle section is sleeved on the positioning column, and the spring top block is provided with an elastic clamping foot. An anti-slip groove extending along the depth direction of the handle groove is opened on the handle groove wall, and one end of the anti-slip groove has a stop portion that cooperates with the elastic clamping foot. The elastic clamping foot can be elastically deformed under the action of external force to pass over the stop portion. As the positioning guide hole of the spring top block is sleeved on the positioning column, the elastic clamping foot is elastically deformed to enter the anti-slip groove, and the elastic clamping foot cooperates with the stop portion to limit the spring top block in the handle groove.

[0014] Preferably, the external unlocking component includes a cylindrical button and a button return spring, the seat body is provided with an assembly cavity opened on the front side of the handle, the opening cover of the assembly cavity is provided with a waterproof rubber cover, the button is slidably fitted in the assembly cavity of the seat body, and is supported in the assembly cavity of the seat body by the button return spring, a push protrusion and a shaft shoulder above the push protrusion are raised on the outer side wall of the button, the push protrusion is pushed and matched with the unlocking rocker arm, a limiting step is provided in the assembly cavity of the seat body, the limiting step and the shaft shoulder stopper are used to prevent the button from falling out of the opening of the assembly cavity, a rubber sealing ring is provided on the shaft shoulder, the button has an initial position, and the button is in the initial position, and the shaft shoulder of the button is supported by the rubber sealing ring. The sealing ring is in contact and sealing cooperation with the limiting step, the lock core of the lock core assembly is positioned and rotated in the cylinder cavity of the button, the lock core and the button are linked along the sliding direction of the button, the lock core is provided with an O-ring that is in contact and sealing cooperation with the wall of the cylinder cavity, the lock core is driven and connected with a locking piece, and a locking part is provided at the bottom of the assembly cavity of the seat body, and the locking piece and the locking part constitute a locking / unlocking cooperation along the sliding direction of the button; the lock shell has a handle buckle edge surrounding the handle groove, the handle has a sealing side plate portion supported on the handle buckle edge when the handle is buckled in the handle groove, the sealing side plate portion is provided with an annular waterproof sealing gasket, and the sealing side plate portion is in close contact and sealing cooperation with the handle buckle edge via the waterproof sealing gasket.

[0015] The flat lock provided by the utility model arranges the lock hook on the handle, and the end of the lock hook is pivoted away from the handle. On the one hand, the lock hook component is integrated and assembled on the handle, which has the advantage of compact structure. On the other hand, the distance between the locking point a where the lock hook and the locking part are locked and matched and the opening b is shortened, which can greatly reduce the phenomenon that the opening size fluctuates greatly due to tolerance matching. The lock has the advantages of stable and reliable locking operation and stable and reliable unlocking action. The bottom plate is fixed with a transverse pin, which has the advantage of more precise and controllable installation position.

[0016] , and installation, the lock has internal and external unlocking operations, and is more widely used,

[0017] The utility model is further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is the background technology of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the flat lock of the utility model;

[0020] Figure 3 This is a diagram showing the handle of the flat lock of the utility model being in an open state;

[0021] Figure 4 This is a schematic diagram of the structure of the lock hook of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the handle portion of the utility model;

[0023] Figure 6 This is a schematic diagram of the internal structure of the handle slot of the utility model;

[0024] Figure 7 for Figure 6 Exploded view of;

[0025] Figure 8 for Figure 2 A partial enlarged view of part A. DETAILED DESCRIPTION

[0026] See attached Figures 2 to 8 The utility model discloses a flat lock, including a lock shell 1, a handle 2 and a lock device. The lock shell 1 has a handle groove 11 on the front. For the convenience of describing the invention of the utility model, as shown in FIG. Figure 3As shown, let the depth direction of the handle groove be the direction of the Z axis, the direction corresponding to the pivot direction of the handle groove 11 and the handle 2 be the length direction, which is the direction of the Y axis, and the width direction of the remaining handle groove 11 is the direction of the X axis. The handle 2 can be buckled into the handle groove 11 and locked by the locking device. One end of the handle 2 is pivotally mounted on the lock housing 1 via the pivot 2-1, and the other end of the handle 2 is an opening and closing end 20 that rotates around the pivot 2-1. A handle-opening torsion spring that drives the handle 2 to pop out of the handle groove 11 is usually arranged at the pivoting portion of the handle 2. The locking device includes a corresponding lock core assembly 3 and a lock hook assembly 4. The handle 2 has a seat body 21 that can be convexly inserted into the handle groove 11. The lock core assembly 3 is installed on the seat body 21. The lock hook assembly includes a lock hook 41 and a locking portion 42 that are respectively arranged on the handle 2 and the lock housing 1. The lock hook 41 is configured There is an elastic reset component, which provides an elastic reset force to drive the hook head 411 of the lock hook 41 to buckle into the locking part 42 to implement locking. An external unlocking component 5 is provided on the handle 2 to swing the lock hook 41 to make the hook head 411 escape from the locking part 42. In order to improve the application range of the lock, some locks are also equipped with an internal unlocking component 6 for the lock hook. The internal unlocking component 6 is exposed on the back of the lock shell 1. The lock has an internal opening function, so that the inner and outer spaces of the door panel of the device where the lock is located can be unlocked. The lock hook 41 is pivotally installed on the base 21 via a rotating shaft, and the lock hook 41 is arranged on the side corresponding to the opening and closing end of the handle 2. The hook head 411 of the lock hook 41 faces the direction opposite to the pivoting end of the handle 2. The locking part 42 is arranged in the handle groove 11 of the lock shell 1 and is located on the side corresponding to the opening and closing end of the handle 2. Compared with traditional locks (such as Figure 1 ) compared to Figure 2 As shown, the installation position of the lock hook is optimized, and the lock hook component is integrated into the handle 2, which has the advantage of a compact structure. On the other hand, the distance between the locking point a where the lock hook and the locking part are locked and matched and the opening b is shortened, which can greatly reduce the phenomenon of large fluctuations in the opening size caused by tolerance matching.

[0027] In order to further improve the reliability of the lock, further optimization design is carried out, specifically:

[0028] The lock hook 41 includes a hook arm 41-1 with a hook head 411, and a pivoting mounting portion 41-2 is provided at one end of the hook arm 41-1 opposite to the hook head 411. The lock hook 41 is installed on the seat body 21 via the pivoting mounting portion 41-2, and an unlocking rocker arm 41-3 is formed on the pivoting mounting portion 41-2. The outer unlocking member 5 pushes the unlocking rocker arm 41-3 to swing the lock hook 41 to unlock. The lock hook 41 is also equipped with an inner unlocking member 6, which is arranged on the back side of the lock housing 1, and the inner unlocking member 6 pushes and cooperates with the hook arm 41-1 of the lock hook 41. Compared with traditional locks (such as Figure 1As shown in the figure, the arrangement of the lock hook on the lock housing is different. Since the lock hook 41 is arranged on the handle 2, the lock hook 41 is pushed and matched with the inner unlocking member 6. The lock hook 41 is relatively independent of the inner unlocking member 6. The lock hook 41 is pushed and matched with the outer unlocking member 5 through the unlocking rocker arm 41-3. The lock hook 41 is relatively independent of the outer unlocking member 5, which reduces the influence of vibration on the effective locking length L3 of the lock hook and ensures that the lock hook and the locking part are locked reliably. On the other hand, the relatively independent lock hook 41 optimizes the position of its center of mass O (as shown in the figure). Figure 4 As shown), the influence of vibration on the effective locking length of the lock hook is reduced, and the reliable locking of the lock hook and the locking part is ensured. Among them, the hook arm 41-1 is in an arc shape, and the hook head 411 protrudes toward the concave side of the hook arm 41-1. When the lock hook is in the above-mentioned installation position, the lock hook has more sufficient space for movement. In addition, with the arc-shaped design of the hook arm of the lock hook, the effective locking length L3 of the lock hook can be extended, and the reliable locking of the lock hook and the locking part is ensured. A limiting structure is provided between the seat body 21 and the lock hook 41 for limiting an extreme position of the lock hook 41 rotating in the direction of the hook head 411 buckling into the locking part 42. The limiting structure includes a limiting block 41-4 provided on the pivot mounting part 41-2 of the lock hook 41, and a supporting surface is provided on the seat body 21. The limiting block 41-4 is supported on the supporting surface 210 to realize the position limitation of the lock hook 41 in one direction.

[0029] In addition, the elastic reset member includes a reset torsion spring 431 and a push rod assembly 432. The reset torsion spring 431 is arranged at the pivot mounting portion 41-2 of the lock hook 41. The elastic arms of the reset torsion spring 431 are supported on the seat body 21 and the hook arm 41-1 respectively. The push rod assembly includes a reset push rod 4321 and a push rod spring 4322. The reset push rod 4321 is slidably matched on the seat body 21. One end of the reset push rod 4321 is in contact with the hook arm 41-1 of the lock hook 41, and the other end of the reset push rod 4321 is in contact with the push rod spring 4322. Compared with the traditional lock, the reset push rod is added on the basis of the torsion spring reset to increase reliability.

[0030] In order to realize a more compact installation arrangement of the lock core and the outer unlocking component, the outer unlocking component of the lock is usually combined with the lock core; the outer unlocking component 5 includes a cylindrical button 51 and a button return spring 52, a mounting cavity opened on the front of the handle 2 is provided on the seat body 21, the opening of the mounting cavity is covered with a waterproof rubber cover 7, a waterproof groove 22 surrounding the opening of the mounting cavity is provided on the front of the handle 2, a through connecting hole 23 is provided at the bottom of the waterproof groove 22, and a waterproof stop can be provided at the edge of the connecting hole 23 located in the waterproof groove 22 to improve the waterproof performance of the connecting hole, the waterproof rubber cover 7 has a cover edge 71 buckled into the waterproof groove 22, and the inner and outer circumferential surfaces of the cover edge 71 are provided with multiple The cover edge 71 has a first waterproof rib, a second waterproof rib and a third waterproof rib on the outer circumference to achieve waterproof sealing, and the inner circumference of the cover edge 71 has a fourth waterproof rib and a fifth waterproof rib, so that the cover edge 71 is buckled into the waterproof groove to form a labyrinth waterproof matching gap, the cover edge 71 has a connecting tail inserted into the connecting hole 23, and the connecting tail has a stop expansion part that stops with the opening of the connecting hole 23 after passing through the connecting hole 23 to prevent the waterproof rubber cover from detaching from the handle, the button 51 is slidably fitted in the assembly cavity of the seat body 21, and is supported in the assembly cavity of the seat body 21 by the button reset spring 52, and a push protrusion 511 is raised on the outer wall of the button 51 and a push protrusion 511 is raised on the push protrusion 511 The shoulder 512 above 11, the pushing protrusion 511 and the unlocking rocker arm 41-3 are pushed together, and a limiting step is provided in the assembly cavity of the seat body 21. The limiting step and the shoulder 512 are stopped to prevent the button 51 from escaping from the opening of the assembly cavity. The button has an initial position, and the lock core 31 of the lock core assembly 3 is positioned and rotated in the cylinder cavity of the button 51. The lock core 31 and the button 51 are linked along the sliding direction of the button 51. The lock core 31 is driven and connected with a locking member 32. A locking portion 211 is provided at the bottom of the assembly cavity of the seat body 21. The locking member 32 and the locking portion 211 form a locking / unlocking cooperation along the sliding direction of the button. When the lock core assembly is locked, the button It cannot be pressed to contact the lock hook 41; to improve the waterproof performance, a rubber sealing ring 513 is provided on the shaft shoulder 512, and when the button 51 is in the initial position, the shaft shoulder 512 of the button 51 contacts and seals with the limit step through the rubber sealing ring 513, and the lock core 31 is provided with an O-ring 311 that contacts and seals with the wall of the cylinder cavity, and the lock shell 1 has a handle buckle edge 12 surrounding the handle groove 11, and the handle 2 has a sealing edge plate portion 24 supported on the handle buckle edge 12 when the handle 2 is buckled in the handle groove 11, and the sealing edge plate portion 24 is provided with an annular waterproof sealing pad 25, and the sealing edge plate portion 24 is in close contact and seals with the handle buckle edge 12 through the waterproof sealing pad 25. Under this design, the lock core, button and handle are waterproofed to improve the waterproof sealing performance of the lock, and the waterproof sealing pad between the handle and the lock shell is set on the back of the handle, which is relatively hidden and not easy to be knocked and scratched by foreign objects.

[0031] In this specific embodiment, the inner unlocking member 6 includes a push button 61 slidably mounted on the lock housing 1, the sliding direction of the push button 61 corresponds to the swinging direction of the lock hook 41, the push button 61 abuts against a push button return spring 62, the push button 61 is concavely provided with an escape groove 611 and a push protrusion 612 located on one side of the escape groove 611, the escape groove 611 and the push protrusion 612 correspond to the lower side of the locking portion 42, when the hook head 411 of the lock hook 41 is buckled into the locking portion 42, the hook head 411 is located in the escape groove 611 and corresponds to the push protrusion 612. The push button slides and directly pushes the hook head of the lock hook to complete the unlocking action, and the unlocking action is reliable. To facilitate the installation and operation of the inner unlocking component, the back corner of the shell 1 is provided with a push button insertion hole that penetrates into the handle groove 11, and a sliding guide structure is provided in the push button insertion hole, such as a guide rib and a guide wall on the side wall of the push button insertion hole, and a guide groove is also provided on the bottom wall of the shell 1. The corresponding push button 61 is provided with a slide groove 613 that slides with the guide rib and a slider 614 that slides with the guide groove. The push button 61 is positioned and slidably fitted in the push button insertion hole through the sliding guide structure. The push button 61 includes a push button body 61-1, so that the push button body 61-1 is L-shaped and has walls corresponding to the side and bottom edges of the shell, which is convenient for pushing the push button. The push button body 61-1 is provided with two relatively arranged insertion arms 61-2, and the push protrusion 61 is formed between the two insertion arms 61-2. 12 and the avoidance groove 611, while the insertion arm 61-2 and the guide wall cooperate to achieve sliding positioning, the two insertion arms 61-2 extend to form an elastic section, along which a spring support side convex 61-21 and a barb clamp 61-22 are provided, a convex seat 11-1 located on the insertion path of the insertion arm 61-2 is provided in the handle groove 11, a guide wall is formed on the convex seat 11-1, and the convex seat 11-1 has a hanging part 11-11 and a spring support part 11-12, when the insertion arm is pushed into the push button insertion hole, the barb clamp 61-22 can pass over the hanging part 11-11 of the convex seat and cooperate with the stopper of the hanging part 11-11, so as to prevent the push button from sliding out of the push button insertion hole, and the push button reset spring is supported between the spring support side convex 61-21 and the spring support part 11-12. The push button is installed by push-insertion, and the installation is realized by the barb clamp, which is convenient and simple to install.

[0032] The seat body 21 generally includes a main seat body 21-1 protruding from the inner wall of the handle 2, the main seat body 21-1 has an opening at the bottom, and a bottom plate 21-2 is provided to cover the bottom opening of the main seat body 21-1. Figure 1As shown in the figure, four screw columns are used for the installation of the bottom plate 21-2 of the seat body 21. The gap between the screw installation hole and the side of the screw will affect the installation position of the bottom plate. The main seat body 21-1 has two vertical plates arranged opposite to each other. The vertical plates of the main seat body 21-1 are provided with a transverse pin hole 21-11, a transverse pin 21-12 and a bottom plate positioning structure. The bottom plate positioning structure is a notch 21-13 on the vertical plate. The bottom plate 21-2 is provided with a pin shaft hole corresponding to the transverse pin hole 21-11. The bottom plate 21-2 is positioned on the vertical plate through the bottom plate positioning structure. The bottom plate 21-2 is provided with a wing plate 21-21 that is buckled into the notch 21-13. The transverse pin 21-13 passes through the transverse pin hole 21-11 and the pin shaft hole to fix the bottom plate 21-2 on the main seat body 21-1. The transverse pin 21-13 can be fixed by riveting at the end. The installation position of the bottom plate is accurate when the transverse pin is used for installation.

[0033] As an embodiment of the present utility model, a pop-up mechanism 8 is also provided in the handle groove 11. The pop-up mechanism 8 is provided on one side of the handle groove 11 near the pivot end of the handle 2. The pop-up mechanism includes a pop-up block 81. A pop-up spring 82 is provided between the pop-up block 81 and the bottom of the handle groove 11. The pop-up block 81 is configured to limit sliding in the handle groove 11 along the depth direction of the handle groove 11. When the opening and closing end 20 of the handle 2 is buckled in the handle groove 11, the seat 21 contacts the pop-up block 81 and compresses the pop-up spring 82 to store energy. The elastic storage capacity of the pop-up spring 82 drives the handle 2 to automatically pop out of the handle groove 11 after being unlocked. The pop-up mechanism provides the handle with a storage capacity for popping out, so that the handle has a fast pop-up response speed. The pop-up mechanism avoids the lock hook position to achieve a more compact installation. The ejection block 81 is arranged along the width direction of the handle groove 11, and includes ejection parts 811 at both ends and a middle section 812 connecting the two ejection parts 811. The middle section 812 of the ejection block 81 is retracted relative to the ejection parts 811 in the length direction of the handle groove 11 to form a clearance recess 813. Under this design, the clearance recess of the ejection block can avoid the assembly position of the ejector assembly, and utilize the contact and cooperation of the lateral positions of the upper seat of the handle to ensure the contact reliability between the ejection top and the handle. Therefore, the structure of the ejection block has the advantages of compact structure and reliable ejection action on the handle.

[0034] A positioning guide hole is provided in the middle section 812, and at least two positioning columns 111 are protruded in the handle groove 11. The positioning guide hole of the middle section 812 is sleeved on the positioning column 111. An elastic clamping foot 814 is provided on the ejector block 81. An anti-dropping groove 112 extending along the depth direction of the handle groove 11 is opened on the wall of the handle groove 11. One end of the anti-dropping groove 112 has a stop portion 113 that cooperates with the elastic clamping foot 814. The elastic clamping foot 814 can be elastically deformed under the action of external force to pass over the stop portion 113. As the positioning guide hole of the ejector block 81 is sleeved on the positioning column 111, the elastic clamping foot 814 is elastically deformed to enter the anti-dropping groove 112. The elastic clamping foot 814 cooperates with the stop portion 113 to limit the ejector block 81 in the handle groove 11. The middle section is used to implement a positioning and guiding structure design for the ejector block, and the positioning column plays the role of positioning, installing and sliding guiding the ejector block, which has the advantage of a compact structure, realizes screwless installation of the ejector block, is simpler and more convenient to install, and has a simple structure. It is convenient for the elastic foot to pass over the stopper, and a sloped wall is arranged on the outside of the stopper. Of course, screws can also be installed on the top of the positioning column to stop the ejector block, or screws and push-up stoppers can be used to limit the ejector block, etc.

Claims

1. A flat lock, comprising a lock shell, a handle and a lock device, wherein the lock shell has a handle groove on the front side, the handle can be buckled into the handle groove and locked by the lock device, one end of the handle is pivotally mounted on the lock shell via a pivot, and the other end of the handle is an opening and closing end that rotates around the pivot, the lock device comprises a corresponding lock core assembly and a lock hook assembly, the handle has a seat body that can be convexly inserted into the handle groove, the lock core assembly is mounted on the seat body, the lock hook assembly comprises a lock hook and a locking part that are respectively arranged on the handle and the lock shell, the lock hook is provided with an elastic reset member, the elastic reset member provides an elastic reset force that drives the hook head of the lock hook to buckle into the locking part to implement locking, and an external unlocking member that is used to swing the lock hook to make the hook head escape from the locking part is provided on the handle, characterized in that: The lock hook is pivotally mounted on the base body via a rotating shaft, and the lock hook is arranged on a side corresponding to the opening and closing end of the handle, with the hook head of the lock hook facing in a direction opposite to the pivot end of the handle, and the locking portion is arranged in the handle groove of the lock shell and located on a side corresponding to the opening and closing end of the handle.

2. The flat lock according to claim 1, characterized in that: The lock hook includes a hook arm with a hook head, and a pivot mounting portion is provided on the end of the hook arm opposite to the hook head. The lock hook is installed on the seat body via the pivot mounting portion, and an unlocking rocker arm is formed on the pivot mounting portion. The external unlocking component pushes the unlocking rocker arm to move the lock hook to swing and unlock. The lock hook is also configured with an internal unlocking component, which is arranged on the back side of the lock shell, and the internal unlocking component pushes and cooperates with the hook arm of the lock hook.

3. The flat lock according to claim 2, characterized in that: The elastic reset component includes a reset torsion spring and a push rod assembly. The reset torsion spring is arranged at the pivot mounting portion of the lock hook. The elastic arms of the reset torsion spring are respectively supported on the seat body and the hook arm. The push rod assembly includes a reset push rod and a push rod spring. The reset push rod is slidably fitted on the seat body. One end of the reset push rod is in contact with the hook arm of the lock hook, and the other end of the reset push rod is in contact with the push rod spring.

4. The flat lock according to claim 2, characterized in that: The inner unlocking component includes a push button slidably mounted on the lock shell, the push button abutting against a push button return spring, the push button is recessed with an avoidance groove and a push protrusion located on one side of the avoidance groove, the avoidance groove and the push protrusion correspond to the bottom of the locking part, when the hook head of the lock hook is buckled into the locking part, the hook head is located in the avoidance groove and corresponds to the push protrusion.

5. The flat lock according to claim 2, characterized in that: The hook arm is in an arc shape, and the hook head is convex toward the concave side of the hook arm.

6. The flat lock according to claim 1, characterized in that: The seat body includes a main seat body protruding on the inner wall of the handle and having an opening at the bottom. The bottom opening cover of the main seat body is provided with a bottom plate. The main seat body has two vertical plates arranged opposite to each other. The vertical plates of the main seat body are provided with transverse pin holes, transverse pins and a bottom plate positioning structure. The bottom plate is provided with a pin shaft hole corresponding to the transverse pin hole. The bottom plate is positioned on the vertical plate through the bottom plate positioning structure. The transverse pin passes through the transverse pin hole and the pin shaft hole to fix the bottom plate to the main seat body.

7. The flat lock according to claim 1, characterized in that: A pop-up mechanism is also provided in the handle groove, which is arranged on one side of the handle groove close to the pivot end of the handle. The pop-up mechanism includes a pop-up block, and a pop-up spring is provided between the pop-up block and the bottom of the handle groove. The pop-up block is configured to limit sliding in the handle groove along the depth direction of the handle groove. When the opening and closing end of the handle is buckled in the handle groove, the seat body contacts the pop-up block and compresses the pop-up spring to store energy. The elastic storage capacity of the pop-up spring can drive the handle to automatically pop out of the handle groove after being unlocked.

8. The flat lock according to claim 7, characterized in that: The ejector block is arranged along the width direction of the handle groove, and includes ejector parts at both ends and a middle section connecting the two ejector parts. The middle section of the ejector block is retracted relative to the ejector parts in the length direction of the handle groove to form a space-avoiding recess.

9. The flat lock according to claim 8, characterized in that: The middle section is provided with a positioning guide hole, and at least two positioning columns are protruded in the handle groove. The positioning guide hole of the middle section is sleeved on the positioning column. The spring top block is provided with an elastic clamping foot. The handle groove wall is provided with an anti-dropping clamping groove extending along the depth direction of the handle groove. One end of the anti-dropping clamping groove is provided with a stop portion that cooperates with the elastic clamping foot stopper. The elastic clamping foot can be elastically deformed under the action of external force to pass over the stop portion. As the positioning guide hole of the spring top block is sleeved on the positioning column, the elastic clamping foot is elastically deformed to enter the anti-dropping clamping groove. The elastic clamping foot cooperates with the stop portion to limit the spring top block in the handle groove.

10. The flat lock according to claim 1, characterized in that: The external unlocking component includes a cylindrical button and a button reset spring. The seat body is provided with an assembly cavity opened on the front side of the handle. The opening cover of the assembly cavity is provided with a waterproof rubber cover. The button is slidably fitted in the assembly cavity of the seat body and is supported in the assembly cavity of the seat body by the button reset spring. A push protrusion and a shoulder above the push protrusion are raised on the outer wall of the button. The push protrusion is pushed and matched with the unlocking rocker arm. A limiting step is provided in the assembly cavity of the seat body. The limiting step and the shoulder stopper are used to prevent the button from falling out of the opening of the assembly cavity. A rubber sealing ring is provided on the shoulder. The button has an initial position. When the button is in the initial position, the shoulder of the button is supported by the rubber sealing ring. The lock core of the lock core assembly is positioned and rotated in the cylinder cavity of the button, and the lock core and the button are linked along the sliding direction of the button. An O-ring is provided on the lock core, which is in contact and seal with the wall of the cylinder cavity. The lock core is driven and connected with a locking piece. A locking part is provided at the bottom of the assembly cavity of the seat body, and the locking piece and the locking part constitute a locking / unlocking cooperation along the sliding direction of the button; the lock shell has a handle buckle edge surrounding the handle groove, and the handle has a sealing side plate portion supported on the handle buckle edge when the handle is buckled in the handle groove, and the sealing side plate portion is provided with an annular waterproof sealing gasket, and the sealing side plate portion is in close contact and seal with the handle buckle edge via the waterproof sealing gasket.

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