A fence lock

Abstract

The utility model discloses a fence lock, including lock body and lock latch seat, lock body includes lock body shell, linkage lever, operating head, the lower extreme of linkage lever sets up first magnetism, and lock latch seat includes lock latch seat shell, sets up lock latch piece in lock latch seat shell, sets up second magnetism in lock latch piece, and the lower extreme side of lock body shell sets up lock latch groove, in the unlocking state, lock latch piece keeps the retracted state and places in lock latch seat shell, when locking, lock latch piece stretches out lock latch seat shell under the magnetic force effect, and stretches into lock latch groove, when unlocking, through operating head drive the magnetism on linkage lever and change position, make magnetic attraction less than the restoring force of lock latch piece, and lock latch piece is under the restoring force effect and retracts into lock latch seat shell, and completes unlocking. Its advantages are: reasonable structure, through the setting of linkage lever, make operating head position move up, avoid the young child to open the fence lock, and adopt the rotation unlocking structure, avoided the problem that the young child helps other objects and opens the lock, improved the security.

Description

Technical Field

[0001] This utility model relates to the field of safe manufacturing technology, specifically a gate lock. Background Technology

[0002] A fence is a barrier made of materials such as bamboo, wood, metal, and plastic. It is widely used in parks, swimming pools, private gardens, and other places. Fences physically separate the area inside and outside the fence, preventing people (especially young children) and pets from passing through. To facilitate passage through the fence, fence gates are often installed, and fence gates are equipped with locks.

[0003] Traditional fence locks have a simple structure, with the locking mechanism and unlocking device located in the same position. Due to the limited height of the fence gate, young children can reach the unlocking device and open the fence lock, resulting in poor security.

[0004] To overcome the aforementioned deficiencies, US Patent Application US20110193354A1 discloses a latch device, which mainly includes a latch assembly comprising an upper latch actuator partially disposed in an upper lock housing, the upper latch actuator being connected to a lower latch assembly partially disposed in a lower latch housing and connected via an intermediate connecting assembly disposed in an intermediate cable housing; a retaining assembly including a latch seat fixed to the door; and a movable lower latch pin movable between an upper or unlocked position and a lower or locked position, connected via an intermediate connecting element to an upper latch pin actuator disposed on a fence or other obstacle, wherein the lower latch pin is typically subjected to a biasing force and held in the upper or unlocked position; this arrangement causes the unlocking mechanism of the latch device to extend upward, thereby preventing young children from opening the fence lock (young children are too short to reach the upper latch actuator). When unlocking, the upper latch actuator is pulled upward, which drives the lower latch pin to move upward through the intermediate connecting element, thus unlocking the door. In other words, only an upward force needs to be applied to the upper latch actuator to complete the unlocking operation. Children can use long objects such as sticks to push the upper latch actuator upward to open the lock. Therefore, this latch device still has safety hazards and needs further improvement. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned deficiencies and to disclose to the public a fence lock with a reasonable structure and strong security.

[0006] The technical solution of this utility model is implemented as follows: A gate lock includes a lock body and a latch seat. The lock body includes a lock body shell, and a linkage rod capable of automatic reset is provided inside the lock body shell. The linkage rod is rotatably engaged with the lock body shell. An operating head extending out of the lock body shell is connected to the upper end of the linkage rod, and a first magnetic body is provided at the lower end of the linkage rod. The latch seat includes a latch seat shell, and a latch member capable of laterally extending or retracting into the latch seat shell is provided inside the latch member. A second magnetic body is provided inside the latch member. A latch groove adapted to the latch member is provided on the lower side of the lock body shell. In the unlocked state, the latch remains retracted within the latch seat housing under the action of restoring force. When locking, the latch extends out of the latch seat housing and into the latch groove under the action of magnetic force. When unlocking, the magnetic body on the linkage rod is moved by the operating head to change position, so that the magnetic attraction force is less than the restoring force of the latch. The latch retracts into the latch seat housing under the action of restoring force, thus completing the unlocking.

[0007] Further optimization measures for this technical solution are as follows: As an improvement, the tail end of the latch extends radially outward to form a retaining edge, and a return spring is provided between the retaining edge and the latch seat housing. Utilizing the spring force, the latch remains retracted within the latch seat housing in the unlocked state, resulting in a simple structure and convenient assembly.

[0008] As an improvement, a first magnetic body is provided on both sides of the lower end of the linkage rod, with the same poles of the first magnetic bodies on both sides facing each other. This arrangement allows the lock body to cooperate with the latch seats on both sides (left and right), facilitating the adaptable installation of the fence lock.

[0009] As an improvement, the lower end of the linkage rod is provided with a receiving cavity, the first magnetic body is placed in the receiving cavity, and the opening of the receiving cavity is provided with a cap.

[0010] As an improvement, the cover is provided with a positioning groove that matches the first magnetic body, and the first magnetic body is fixed in the corresponding positioning groove.

[0011] The inclusion cavity and the cover with positioning groove facilitate the assembly of the first magnetic body.

[0012] As an improvement, the latch seat housing is provided with a limiting part that matches the lower end of the lock body housing. The limiting part has a semi-enclosed structure, and when locked, the lower end of the lock body housing enters the limiting part. The limiting part allows the latch to enter the latch groove more accurately when the door is closed.

[0013] As an improvement, a torsion spring is provided between the linkage rod and the lock body housing. The torsion spring provides a restoring force after the linkage rod rotates.

[0014] As an improvement, a mechanical lock is provided inside the latch seat housing on the outside of the latch member. The mechanical lock includes a keyhole and a bolt, with the keyhole exposed on the latch seat housing. When the bolt of the mechanical lock extends, the latch member cannot exit the latch groove. The mechanical lock can be used to mechanically lock the fence lock, and in the locked state, even rotating the linkage rod will not unlock it.

[0015] As an improvement, the latch seat housing includes a latch seat housing body, a fixing member, a bottom cover, and a cover plate. The fixing member has a first slide rail on both sides and a second slide rail in the middle. The latch seat housing body has a first slide groove that matches the first slide rail, and the bottom cover has a second slide groove that matches the second slide rail. The bottom cover has a locking block on both sides, and the latch seat housing body has a locking groove that matches the locking block. The cover plate is fixedly fitted to the outer side of the latch seat housing body.

[0016] As an improvement, the lock body shell includes a lock body shell body, an upper end cover is provided at the upper end of the lock body shell body, a lower end cover is provided at the lower end of the lock body shell body, and the latch groove is provided on the lower end cover.

[0017] The advantages of this utility model compared with the prior art are: This utility model discloses a fence lock with a reasonable structure. Its linkage rod rotates and engages with the lock body shell. In the unlocked state, the latch remains retracted within the latch seat shell under the action of restoring force. When locking, the latch extends out of the latch seat shell and into the latch groove under the action of magnetic force. When unlocking, the operating head moves the magnetic body on the linkage rod to change position, making the magnetic attraction less than the restoring force of the latch. The latch then retracts into the latch seat shell under the action of the restoring force, completing the unlocking process. Similarly, the linkage rod in this fence lock allows the operating head to move upwards, preventing children from opening the lock. Furthermore, the rotating unlocking structure prevents children from using other objects to pry the lock open, thus improving safety. Attached Figure Description

[0018] Figure 1 This is a perspective structural diagram of an embodiment of the present utility model; Figure 2 This is an exploded view of an embodiment of the present utility model; Figure 3 This is a cross-sectional view of the fence lock of this utility model in the locked state; Figure 4 yes Figure 2 A sectional view of the central locking body; Figure 5 yes Figure 4 Enlarged view of section A in the middle; Figure 6 yes Figure 2 Exploded view of the lock body; Figure 7 yes Figure 6 Enlarged view of part B; Figure 8 yes Figure 2 Exploded view of the central locking latch seat; Figure 9 This is an application state diagram of the unlocking state of the fence lock of this utility model; Figure 10 yes Figure 9 Enlarged view of section C; Figure 11 This is an application state diagram of the locked state of the fence lock of this utility model.

[0019] The names of the reference numerals in the accompanying drawings of this utility model are: Lock body shell 1, latch groove 1a, lock body shell main body 11, upper end cover 12, lower end cover 13, linkage rod 2, torsion spring 2a, operating head 21, receiving cavity 22, sealing cover 23, positioning groove 23a, first magnetic body 3, latch seat shell 4, limiting part 4a, latch seat shell main body 41, first slide groove 41a, slot 41b, fixing part 42, first slide rail 42a, second slide rail 42b, bottom cover 43, second slide groove 43a, locking block 43b, cover plate 44, latch component 5, stop edge 51, second magnetic body 6, return spring 7, mechanical lock 8, keyhole 8a, lock tongue 81, fence 91, fence gate 92. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings: The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0022] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0023] like Figures 1 to 11 As shown, a fence lock includes a lock body and a latch seat. The lock body includes a lock body shell 1, and a linkage rod 2 that can automatically reset is provided inside the lock body shell 1. The linkage rod 2 is rotatably engaged with the lock body shell 1. An operating head 21 that extends out of the lock body shell 1 is connected to the upper end of the linkage rod 2. A first magnetic body 3 is provided at the lower end of the linkage rod 2. The latch seat includes a latch seat shell 4. A latch member 5 that can extend laterally or retract into the latch seat shell 4 is provided inside the latch seat shell 4. A second magnetic body 6 is provided inside the latch member 5. A latch groove 1a that matches the latch member 5 is provided on the lower side of the lock body shell 1. In the unlocked state, the latch 5 remains retracted within the latch seat housing 4 under the action of restoring force. When locking, the latch 5 extends out of the latch seat housing 4 under the action of magnetic force and extends into the latch groove 1a. When unlocking, the magnetic body 3 on the linkage rod 2 is moved by the operating head 21 to change position, so that the magnetic attraction force is less than the restoring force of the latch 5. The latch 5 retracts into the latch seat housing 4 under the action of restoring force, thus completing the unlocking.

[0024] The tail end of the latch 5 extends radially outward to form a retaining edge 51, and a return spring 7 is provided between the retaining edge 51 and the latch seat housing 4. The elastic force of the return spring 7 causes the latch 5 to tend to retract inward, and at the same time, it keeps the latch 5 in the retracted state inside the latch seat housing 4 when unlocked; this arrangement avoids the situation where the latch 5 protruding when the gate is closed will hit the lock body and cause the gate to fail to close.

[0025] The lower end of the linkage rod 2 is provided with a first magnetic body 3 on both sides, with the same poles of the first magnetic bodies 3 facing each other. This arrangement allows the lock body to cooperate with the latch seats on both sides (left and right), facilitating the adaptability of the fence lock. In other words, the same fence lock can be used for both left-side and right-side gates, improving the adaptability of the fence lock and enhancing the convenience for consumers when purchasing.

[0026] The lower end of the linkage rod 2 is provided with a receiving cavity 22, the first magnetic body 3 is placed in the receiving cavity 22, and a cover 23 is provided at the opening of the receiving cavity 22.

[0027] The cover 23 is provided with a positioning groove 23a that is adapted to the first magnetic body 3, and the first magnetic body 3 is fixed in the corresponding positioning groove 23a.

[0028] Since the two first magnetic bodies 3 are arranged opposite each other with the same pole, they will generate a repulsive force. During assembly, the first magnetic body 3 is first assembled into the positioning groove 23a corresponding to the cover 23, and then the cover 23 is fixed to the linkage rod 2, which can improve the assembly efficiency of the first magnetic body 3.

[0029] The latch seat housing 4 is provided with a limiting part 4a that is adapted to the lower end of the lock body housing 1. The limiting part 4a has a semi-enclosed structure. When locking, the lower end of the lock body housing 1 enters the limiting part 4a. The setting of the limiting part 4a allows the latch 5 to enter the latch groove 1a more accurately when the door is closed.

[0030] A torsion spring 2a is provided between the linkage rod 2 and the lock body housing 1. The torsion spring 2a provides the restoring force for the linkage rod 2 to automatically reset, resulting in a simple structure and convenient assembly.

[0031] The latch seat housing 4 contains a mechanical lock 8 located outside the latch member 5. The mechanical lock 8 includes a keyhole 8a and a bolt 81, with the keyhole 8a protruding from the latch seat housing 4. When the bolt 81 of the mechanical lock 8 extends, the latch member 5 cannot exit the latch groove 1a. After the gate is closed, the mechanical lock 8 can be used to lock the gate, i.e., the mechanical lock 8 is closed by the key (causing the bolt 81 to extend). When the gate is locked, the latch member 5 is blocked by the bolt 81 of the mechanical lock 8, preventing it from retracting into the latch seat housing 4. Therefore, even rotating the linkage rod 2 will not open the gate lock.

[0032] The latch seat housing 4 includes a latch seat housing body 41, a fixing member 42, a bottom cover 43, and a cover plate 44. The fixing member 42 is provided with a first slide rail 42a on both sides and a second slide rail 42b in the middle. The latch seat housing body 41 is provided with a first slide groove 41a that matches the first slide rail 42a. The bottom cover 43 is provided with a second slide groove 43a that matches the second slide rail 42b. The bottom cover 43 is provided with a locking block 43b on both sides. The latch seat housing body 41 is provided with a locking groove 41b that matches the locking block 43b. The cover plate 44 is fixedly engaged with the outer side of the latch seat housing body 41.

[0033] During the installation of the latch seat, the fixing member 42 is fixed to the fence gate 92. After the mechanical lock 8, latch member 5, and return spring 7 are assembled inside the latch seat housing body 41, the bottom cover 43 is fixed to the latch seat housing body 41 through the cooperation of the locking block 43b and the locking groove 41b on the latch seat housing body 41. Then, through the cooperation of the first sliding groove 41a and the first sliding rail 42a, and the cooperation of the second sliding groove 43a and the second sliding rail 42b, the latch seat housing body 41 is assembled to the fixing member 42. After being fixed with screws, the cover plate 44 is fastened on the outside of the latch seat housing body 41.

[0034] The lock body shell 1 includes a lock body shell main body 11, an upper end cover 12 is provided at the upper end of the lock body shell main body 11, a lower end cover 13 is provided at the lower end of the lock body shell main body 11, and the latch groove 1a is provided on the lower end cover 13.

[0035] Working principle: like Figures 9 to 11 As shown, during installation, the lock body is mounted on the fence 91, while the latch seat is fixed on the fence gate 92, and the fence gate 92 and the fence 91 are rotatably engaged.

[0036] This utility model's fence lock has two first magnetic bodies 3 respectively arranged on both sides of the lower end of the linkage rod 2, with the two first magnetic bodies 3 facing each other with the same pole. A second magnetic body 6 is arranged inside the latch 5, with the outer side of the second magnetic body 6 having the opposite pole to the outer side of the first magnetic body 3. If the N poles of the first magnetic bodies 3 are facing each other, then the outer sides of the two first magnetic bodies 3 are the S poles. In this case, when assembling the second magnetic body 6, the N pole of the second magnetic body 6 must be on the outer side (closer to the first magnetic body 3). Conversely, if the S poles of the first magnetic bodies 3 are facing each other, then the outer sides of the two first magnetic bodies 3 are the N poles. In this case, when assembling the second magnetic body 6, the S pole of the second magnetic body 6 must be on the side closer to the first magnetic body 3. The second magnetic body 6 can be fixed inside the latch 5 by adhesive.

[0037] In the unlocked state, the mechanical lock 8 is in the unlocked state, that is, the bolt 81 of the mechanical lock 8 is in the retracted state. At this time, the latch 5 is retracted into the latch seat housing 4 under the action of the return spring 7. When closing the gate 92, the gate 92 can be closed naturally. As the gate 92 rotates to the closed position, the lower end of the lock body housing 1 enters the limiting part 4a of the latch seat housing 4, and under the action of the limiting part 4a, the gate 92 can be prevented from rotating excessively. As the gate 92 rotates to the closed position, the first magnetic body 3 and the second magnetic body 6 in the latch 5 are attracted by opposite magnetic poles. The latch 5 overcomes the elastic force of the return spring 7 and extends out of the latch seat housing 4 and into the latch groove 1a, completing the automatic locking.

[0038] To unlock, simply rotate the operating head 21 to rotate the linkage rod 2, thereby changing the position of the first magnetic body 3 at the lower end of the linkage rod 2. As the position of the first magnetic body 3 changes, the magnetic attraction between the first magnetic body 3 and the second magnetic body 6 gradually decreases. When the magnetic attraction between them is less than the elastic force of the return spring 7, the latch 5 will retract into the latch seat housing 4, thus exiting from the latch groove 1a, and the gate lock will open. Here, the rotation angle of the linkage rod 2 is set to 0°-90°. As the rotation angle of the linkage rod 2 increases, the magnetic attraction between the first magnetic body 3 and the second magnetic body 6 gradually decreases. In addition, as the linkage rod 2 rotates from 0° to 90°, the distance between the like poles of the first magnetic body 3 and the second magnetic body 6 shortens. The first magnetic body 3 and the second magnetic body 6 will change from a state of attraction between opposite poles to a state of repulsion between like poles. The repulsive force between the first magnetic body 3 and the second magnetic body 6 will accelerate the exit of the latch 5 from the latch groove 1a, thereby improving the unlocking efficiency.

[0039] Furthermore, in the locked state, the mechanical lock 8 can be closed with the key. Even if the bolt 81 of the mechanical lock 8 extends, the extended bolt 81 will press against the latch 5 and prevent it from retracting. At this time, even if the operating head 21 is turned, the gate lock cannot be opened.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fence lock, comprising a lock body and a bolt seat, characterized in that: The lock body includes a lock body shell (1), and a linkage rod (2) capable of automatic reset is provided inside the lock body shell (1). The linkage rod (2) is rotatably engaged with the lock body shell (1). An operating head (21) extending out of the lock body shell (1) is connected to the upper end of the linkage rod (2). A first magnetic body (3) is provided at the lower end of the linkage rod (2). The latch seat includes a latch seat shell (4). A latch member (5) capable of extending laterally or retracting into the latch seat shell (4) is provided inside the latch seat shell (4). A second magnetic body (6) is provided inside the latch member (5). A latch groove (1a) adapted to the latch member (5) is provided on the lower side of the lock body shell (1). In the unlocked state, the latch (5) remains retracted within the latch seat housing (4) under the action of restoring force. When locked, the latch (5) extends out of the latch seat housing (4) under the action of magnetic force and extends into the latch groove (1a). When unlocked, the magnetic body (3) on the linkage rod (2) is moved by the operating head (21) to change position, so that the magnetic attraction force is less than the restoring force of the latch (5). The latch (5) retracts into the latch seat housing (4) under the action of restoring force, thus completing the unlocking.

2. A fence lock according to claim 1, characterized in that: The tail end of the latch (5) extends radially outward to form a retaining edge (51), and a return spring (7) is provided between the retaining edge (51) and the latch seat housing (4).

3. A fence lock according to claim 2, characterized in that: The lower end of the linkage rod (2) is provided with a first magnetic body (3) on both sides, and the first magnetic bodies (3) on both sides are arranged with the same pole facing each other.

4. A fence lock according to claim 3, characterized in that: The lower end of the linkage rod (2) is provided with a receiving cavity (22), the magnetic body (3) is placed in the receiving cavity (22), and the opening of the receiving cavity (22) is provided with a cover (23).

5. A fence lock according to claim 4, characterized in that: The cover (23) is provided with a positioning groove (23a) that is adapted to the first magnetic body (3), and the first magnetic body (3) is fixed in the corresponding positioning groove (23a).

6. A fence lock according to claim 5, characterized in that: The latch seat housing (4) is provided with a limiting part (4a) that is adapted to the lower end of the lock body housing (1). The limiting part (4a) has a semi-enclosed structure. When the lock is locked, the lower end of the lock body housing (1) enters the limiting part (4a).

7. A fence lock according to claim 6, characterized in that: A torsion spring (2a) is provided between the linkage rod (2) and the lock body shell (1).

8. A fence lock according to claim 7, characterized in that: The latch seat housing (4) is provided with a mechanical lock (8) on the outside of the latch member (5). The mechanical lock (8) includes a keyhole (8a) and a bolt (81). The keyhole (8a) is exposed on the latch seat housing (4). When the bolt (81) of the mechanical lock (8) is extended, the latch member (5) cannot exit the latch groove (1a).

9. A fence lock according to claim 8, characterized in that: The latch seat housing (4) includes a latch seat housing body (41), a fixing member (42), a bottom cover (43), and a cover plate (44). The fixing member (42) is provided with a first slide rail (42a) on both sides and a second slide rail (42b) in the middle. The latch seat housing body (41) is provided with a first slide groove (41a) that matches the first slide rail (42a). The bottom cover (43) is provided with a second slide groove (43a) that matches the second slide rail (42b). The bottom cover (43) is provided with a locking block (43b) on both sides. The latch seat housing body (41) is provided with a locking groove (41b) that matches the locking block (43b). The cover plate (44) is fixedly engaged with the outer side of the latch seat housing body (41).

10. A fence lock according to claim 9, characterized in that: The lock body shell (1) includes a lock body shell body (11), an upper end cover (12) is provided at the upper end of the lock body shell body (11), a lower end cover (13) is provided at the lower end of the lock body shell body (11), and the latch groove (1a) is provided on the lower end cover (13).

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