Box lock and meter box with box lock

Abstract

A box lock and a meter box with the box lock, the box lock comprises a lock body, a lock core, an oblique lock tongue and a lock catch, a rotation cavity is provided inside the lock body, the lock core is rotatably installed in the rotation cavity, a key hole is provided on the lock core, a connecting hole corresponding to the key hole is provided on the surface of the lock body, the connecting hole is connected to the rotation cavity, a lock tongue hole is provided on one side of the lock body, a retractable oblique lock tongue is slidably installed in the lock tongue hole, a reset elastic member is provided between the oblique lock tongue and the lock body, the oblique lock tongue can be retracted and snap-fitted with the lock catch on the door, a connecting groove is provided between the lock tongue hole and the rotation cavity, a transmission mechanism is provided in the connecting groove, and the lock core drives the oblique lock tongue to retract through the transmission mechanism. The lock accessories of the present invention are mostly built into the door body, and are not easily corroded compared to padlocks, and the oblique lock tongue can be freely retracted, so that the staff can easily lock the door body and the door frame.

Description

Technical Field

[0001] The invention relates to the field of locks, and in particular to a box lock. Background Art

[0002] The locks currently used in power meter boxes are generally traditional padlocks. The use of traditional padlocks has the following two main defects: First, due to the lock itself, metal products are exposed outdoors for a long time and are easily corroded, causing the closed part of the lock to stick and be difficult to open or even fail to open, which not only brings trouble to work, but also increases daily maintenance expenses; Second, it is inconvenient to open and close, and it is necessary to re-padlock when closing, otherwise the box door cannot be closed. If the equipment manager loses the lock key for some reason or hides the key for bad or illegal purposes, the meter box will have to be re-locked, which also brings trouble to work and increases daily maintenance expenses. Summary of the invention

[0003] The present invention aims to solve the problems existing in the above-mentioned prior art and provides a box lock and a meter box with the box lock, so that the meter box can be opened and closed conveniently and the inspection and maintenance of the staff are convenient.

[0004] The present invention solves its technical problems by adopting the following technical solution: a box lock, comprising a lock body, a lock core, an oblique lock tongue and a lock buckle; a rotating cavity is provided inside the lock body, in which the lock core is rotatably installed; a keyhole is provided on the lock core; a connecting hole corresponding to the keyhole is provided on the surface of the lock body, and the connecting hole is communicated with the rotating cavity; a lock tongue hole is provided on one side of the lock body, in which a retractable oblique lock tongue is slidably installed; a reset elastic member is provided between the oblique lock tongue and the lock body, and the oblique lock tongue can be retracted and snap-fitted with the lock buckle on the door; a connecting groove is provided between the lock tongue hole and the rotating cavity, and a transmission mechanism is provided in the connecting groove, and the lock core drives the oblique lock tongue to retract and retract through the transmission mechanism.

[0005] In order to further improve, the end of the inclined lock tongue has an inclined portion, and a groove is opened on the inclined portion, the groove includes a rotating block receiving groove and a spring installation groove, a fan-shaped rotating block is arranged in the rotating block receiving groove, and a buffer spring is arranged in the spring installation groove, the tip of the fan-shaped rotating block is hinged to the inner end of the inclined portion through an axle pin, a slot is provided on the outer side edge of the fan-shaped rotating block, a wear-resistant gasket is installed on the slot, and a boss is provided on the outer side edge of the fan-shaped rotating block, and the boss is sleeved with one end of the buffer spring.

[0006] For further improvement, the width of the wear-resistant gasket is greater than the thickness of the fan-shaped rotating block, and a limiting protrusion is provided on the fan-shaped rotating block, and the limiting protrusion cooperates with a limiting groove provided on the rotating block receiving groove.

[0007] Further improvement, the transmission mechanism includes a rotating rod and a protrusion, the fixed end of the rotating rod is vertically fixed to the side wall of the lock core, the cross-sectional shape of the connecting groove is correspondingly set to be fan-shaped, the protrusion is fixedly connected to the side wall surface of the oblique lock tongue, and the lower end of the rotating rod and the protrusion can be mutually moved to realize that the lock core rotates to drive the oblique lock tongue to retract. The lower end of the rotating rod is sharp on one side and rounded on the other side.

[0008] For further improvement, a fan-shaped limit groove is provided on the upper part of the rotating cavity, and a rotating rod limit block cooperating with the fan-shaped limit groove is provided on the lock core, and the position of the rotating rod limit block and the position of the rotating rod are symmetrical about the axis of the lock core.

[0009] For further improvement, the side of the lock body is provided with an installation opening connected to the inner end of the lock tongue hole, and a cover plate fixed with screws is provided on the installation opening. The reset elastic member is a compression spring, one end of the compression spring is installed in a positioning hole set at the inner end of the inclined lock tongue, and the other end of the compression spring is against the inner wall of the cover plate.

[0010] For further improvement, a sliding block is provided on the side wall surface of the inclined locking tongue, and a sliding groove is axially provided on the inner wall of the locking tongue hole, and the sliding block and the sliding groove cooperate with each other and are slidably connected.

[0011] Further improvement, the keyhole has a variety of hole sections, including a hexagonal hole section, a cross slot hole section and a slotted hole section arranged in sequence from the outside to the inside, and the slotted hole section coincides with one of the slots of the cross slot hole section.

[0012] A meter box comprises a door body, a door frame and a box lock, wherein the lock body and the door body or the door frame are an integrated structure or an inlaid structure, the lock buckle is installed relative to the lock body, two connecting holes are provided, which are respectively located on the front and rear side surfaces of the lock body, at least two conical four-wing notches are spaced apart on the edge of the connecting hole, an inlay with a matching shape is embedded in the connecting hole, and a key through hole is provided on the inlay.

[0013] The beneficial effects of the present invention are:

[0014] 1. The lock body of the present invention is an integrated structure or an inlaid structure with the door body or door frame, which is easy to install and process. The front and rear surfaces of the lock body are provided with inserts for installing the lock core, and the side wall of the lock body is provided with a cover plate for installing the oblique lock tongue and the compression spring. The box lock has a simple structure, few parts, and is easy to install, disassemble and maintain. Most of the lock parts are built into the door body and will not be exposed outdoors for a long time. Compared with padlocks, it is not easy to rust and the service life of the lock body is long; the present invention has an oblique lock tongue structure, which can be freely extended and retracted. In the absence of keys and tools, the staff can easily lock the door body and door frame.

[0015] 2. The oblique lock tongue of the present invention is provided with a wear-resistant gasket, a fan-shaped rotating block and a buffer spring, which can buffer and transfer the impact force of the door frame on the oblique lock tongue when the door body and the door frame are closed. The oblique lock tongue can be retracted more smoothly, avoiding wear between the door frame and the oblique portion on the oblique lock tongue, protecting the door frame, and improving the structural strength of the oblique lock tongue. The oblique lock tongue is not easy to break or get stuck.

[0016] 3. A transmission mechanism is provided between the lock core and the oblique lock tongue of the present invention. The transmission mechanism includes a rotating rod, a protrusion and an arc-shaped rack. The structure is simple and durable, the transmission is stable, the mechanical efficiency is high, and the use is convenient. It is easier and more labor-saving for users to unlock the lock.

[0017] 4. The keyhole of the present invention has a variety of hole sections, including a hexagonal hole section, a cross slot hole section and a slotted hole section. The lock can be unlocked by simple tools such as an hexagonal wrench, a cross screwdriver or a slotted screwdriver, which greatly reduces the difficulty of opening the lock in specific situations and facilitates the staff to unlock and repair the lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure in which the box lock is installed on the door body;

[0019] Figure 2 It is a structural schematic diagram of Embodiment 1 of the lock body inlay structure;

[0020] Figure 3 This is a schematic diagram of the oblique lock bolt structure of Example 3;

[0021] Figure 4 This is a schematic diagram of the keyhole structure of Example 4;

[0022] Figure 5 This is a schematic diagram of the insert structure in Example 5;

[0023] Figure 6 It is a structural schematic diagram of the lock body being installed on the door frame;

[0024] Description of the accompanying drawings: 1, door body, 2, lock body, 21, rotation cavity, 211, fan-shaped limit groove, 22, connecting hole, 221, conical four-wing notch, 222, insert, 223, key hole, 23, lock tongue hole, 231, slide groove, 24, connecting groove, 25, installation port, 26, cover plate, 3, lock core, 31, key hole, 311, hexagonal hole section, 312, cross slot hole section, 313, straight slot hole section, 32, rotation Rod limiting block, 4, oblique lock tongue, 41, inclined portion, 42, rotating block receiving groove, 421, limiting groove, 43, spring mounting groove, 44, fan-shaped rotating block, 441, slot, 442, boss, 443, limiting convex block, 45, buffer spring, 46, wear-resistant gasket, 47, positioning hole, 48, slider, 5, reset elastic member, 6, door frame, 6, lock buckle, 7, transmission mechanism, 71, rotating rod, 72, convex block, 8, key. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings:

[0026] As attached Figure 1-2As shown: A box lock in this embodiment 1 includes a lock body 2, a lock core 3, an oblique lock tongue 4 and a lock buckle 9 installed in the door body 1 of the meter box, and a key 8. The lock body 2 is provided with a rotating cavity 21, and the lock core 3 is rotatably installed in the rotating cavity 21. The lock core 3 is provided with a key hole 31, and the key hole 31 is adapted to the key 8. The surface of the lock body 2 is provided with a connecting hole 22 corresponding to the key hole 31, and the key 8 can be passed through the connecting hole 22. The connecting hole 22 is connected to the rotating cavity 21. A lock tongue hole 23 is provided on one side of the lock body 2, and a retractable lock tongue hole 23 is slidably installed in the lock tongue hole 23. The oblique lock tongue 4 is provided with a reset elastic member 5 between the oblique lock tongue 4 and the lock body 2. The reset elastic member 5 makes the oblique lock tongue 4 in a pop-up state when it is not acted upon by an external force. The oblique lock tongue 4 can be retracted and snap-fitted with the lock buckle 9 on the door frame 6 of the meter box after the door body 1 is closed. The staff can easily close the door body 1 of the meter box without the key 8. A connecting groove 24 is provided between the lock tongue hole 23 and the rotating cavity 21. A transmission mechanism 7 is provided in the connecting groove 24. The transmission mechanism 7 can be a pair of gears or mutually cooperating toggles. The lock core 3 drives the oblique lock tongue 4 to retract through the transmission mechanism 7. The transmission mechanism 7 includes a rotating rod 71 and a protrusion 72. The fixed end of the rotating rod 71 is vertically fixed to the side wall of the lock core 3. The cross-sectional shape of the connecting groove 24 is correspondingly set to a fan shape. The protrusion 72 is fixedly connected to the side wall of the oblique lock tongue 4. The lower end of the rotating rod 71 and the protrusion 72 can be toggled with each other to realize that the rotation of the lock core 3 drives the oblique lock tongue 4 to retract. A fan-shaped limit groove 211 is provided on the upper part of the rotating cavity 21, and a rotating rod limit block 32 cooperating with the fan-shaped limit groove 211 is provided on the lock core 3. The position of the rotating rod limit block 32 and the position of the rotating rod 71 are symmetrical about the axis of the lock core 3. The rotating rod limit block 32 can limit the rotation of the rotating rod 71. When in use, the staff can insert the key 8 into the keyhole 31 and rotate the lock core 3, which drives the rotating rod 71 to rotate. The lower end of the rotating rod 71 compresses the reset elastic member 5 and the oblique lock tongue 4 moves inwardly and retracts the lock tongue hole 23 by toggling the protrusion 72, so that the oblique lock tongue 4 and the lock buckle 9 are disengaged. At this time, the staff can open the door body 1 of the meter box for maintenance; after the staff releases the key 8, the reset elastic member 5 pushes the oblique lock tongue 4 to pop out automatically, and at the same time drives the lock core 3 to reset; when the staff pushes the door body 1 into the door frame 6 without the key, the oblique lock tongue 4 will automatically shrink after touching the door frame 6, and will automatically pop out when reaching the position of the lock buckle 9, so that the door body 1 and the door frame 6 are locked. The present invention has a simple structure and is easy to open and close. In the case of losing the lock key, there is no need to replace the lock for the meter box, which brings convenience to work and saves daily maintenance expenses. The lower end of the rotating rod 71 has a sharp corner on one side that cooperates with the protrusion 72, which just hooks the protrusion 72, so that the inclined lock tongue can be easily and sensitively moved when the lock cylinder rotates. The other side is rounded to avoid interference with the inclined lock tongue and is not easy to get stuck.

[0027] As attached Figure 3 As shown, embodiment 2: on the basis of embodiment 1 or 2, the end of the oblique lock tongue 4 has an inclined portion 41, the inclined portion 41 is provided with a groove, the groove includes a rotating block receiving groove 42 and a spring installation groove 43, a fan-shaped rotating block 44 is provided in the rotating block receiving groove 42, a buffer spring 45 is provided in the spring installation groove 43, the tip of the fan-shaped rotating block 44 is hinged with the inner end of the inclined portion 41 through an axle nail, a clamping groove 441 is provided on the outer side of the fan-shaped rotating block 44, a wear-resistant gasket 46 is installed on the clamping groove 441, a boss 442 is provided on the outer side of the fan-shaped rotating block 44, and the boss 442 is sleeved with one end of the buffer spring 45. The width of the wear-resistant gasket 46 is greater than the thickness of the fan-shaped rotating block 44, which can increase the contact area with the door frame. The sector-shaped rotating block 44 is provided with a limiting protrusion 443 , which cooperates with a limiting groove 421 provided on the rotating block receiving groove 42 to prevent the sector-shaped rotating block 44 from falling off.

[0028] When the door body 1 and the door frame 6 are closed, the door frame 6 first contacts the wear-resistant gasket 46, thus avoiding direct wear on the inclined portion 41 of the inclined lock tongue 4, thereby increasing the service life of the inclined lock tongue 4. The force of the door frame 6 on the wear-resistant gasket 46 is first transmitted to the fan-shaped rotating block 44, causing the fan-shaped rotating block 44 to rotate and shrink back to the rotating block receiving groove 42. At the same time, the buffer spring 45 is compressed, buffers the impact force and converts it into elastic force acting vertically on the spring mounting groove 43, promoting the inclined lock tongue 4 to shrink inwardly, thereby improving the force conversion efficiency and reducing the wear between the inclined lock tongue 4 and the lock tongue hole 23. Finally, the wear-resistant gasket 46 fits with the inclined portion 41, and the force of the door frame 6 is transmitted to the inclined portion 41 through the wear-resistant gasket 46. In this way, the force-bearing area on the inclined portion 41 is large, the pressure is small, and the surface is not easily damaged. The inclined lock tongue 4 is completely retracted into the lock tongue hole 23 and automatically pops out when it reaches the lock buckle 9 position, thereby realizing the locking of the door body 1 and the door frame 6. The oblique lock tongue 4 is cleverly designed, and is not easily stuck due to too fast closing of the door. It is wear-resistant and has a long service life. Since the wear-resistant gasket 46 and the fan-shaped rotating block 44 are in a spring-up state when not under force, it can prevent thieves from using thin slices to pry the door lock and steal. It is easy to manufacture, with extremely low additional cost, and has a certain damping effect, which can prevent the door body from closing too much.

[0029] As attached Figure 4As shown, embodiment 3: on the basis of embodiment 1, the keyhole 31 has a plurality of hole sections, including a hexagon hole section 311, a cross slot hole section 312 and a slotted hole section 313 arranged sequentially from the outside to the inside, and the slotted hole section 313 coincides with one of the slots of the cross slot hole section 312. The keyhole 31 has a simple structure and can be unlocked by simple tools such as an hexagon wrench, a cross screwdriver or a slotted screwdriver, which greatly reduces the difficulty of opening the lock in specific occasions and facilitates the staff to unlock and repair the lock.

[0030] As attached Figure 1-6 As shown, Example 4, a meter box, has a door body 1, a door frame 6 and a box lock. On the basis of Examples 1-3, the lock body 2 and the door body 1 or the door frame 6 are an integrated structure or an inlaid structure. The installation of the lock body 2 is more convenient and the structure is more compact. The lock buckle 9 is installed relative to the lock body 2. Two connecting holes 22 are provided, which are respectively located on the front and rear side surfaces of the lock body 2. At least two conical four-wing notches 221 are spaced apart on the edge of the connecting hole 22. An insert 222 of a matching shape is embedded in the connecting hole 22. After the lock core is installed into the rotating cavity through the connecting hole 22, it can be fixed by the insert 222. The insert 222 is provided with a key through hole 223 for convenient passage of unlocking tools. The side of the lock body 2 is provided with an installation opening 25 connected to the inner end of the bolt hole 23, and a cover plate 26 fixed with screws is provided on the installation opening 25. After the cover plate 26 is opened, the oblique bolt 4 and the spring return member 5 can be installed. The return elastic member 5 is a compression spring, one end of which is installed in a positioning hole 47 provided at the inner end of the oblique bolt 4, and the other end of the compression spring is against the inner wall of the cover plate 26. A slider 48 is provided on the side wall surface of the oblique bolt 4, and a slide groove 231 is provided along the axial direction of the inner wall of the bolt hole 23. The slider 48 and the slide groove 231 cooperate with each other to slide and connect, and the extension and contraction of the oblique bolt 4 is more stable.

[0031] Although the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A box lock, comprising a lock body (2), a lock core (3), an inclined lock tongue (4) and a lock catch (9), characterized in that: The lock body (2) is provided with a rotating chamber (21) inside, the lock core (3) is rotatably mounted in the rotating chamber (21), the lock core (3) is provided with a key hole (31), the surface of the lock body (2) is provided with a connecting hole (22) corresponding to the key hole (31), the connecting hole (22) is connected with the rotating chamber (21), a lock bolt hole (23) is provided on one side of the lock body (2), a retractable oblique lock bolt (4) is slidably mounted in the lock bolt hole (23), a reset elastic member (5) is provided between the oblique lock bolt (4) and the lock body (2), the oblique lock bolt (4) can be retracted and snap-fitted with the lock buckle (9) on the door, a connecting groove (24) is provided between the lock bolt hole (23) and the rotating chamber (21), a transmission mechanism (7) is provided in the connecting groove (24), and the lock core (3) drives the oblique lock bolt (4) to retract through the transmission mechanism (7).

2. A box lock according to claim 1, characterized in that: The end of the oblique lock tongue (4) has an inclined surface (41), and a groove is formed on the inclined surface (41), and the groove includes a rotating block receiving groove (42) and a spring installation groove (43). A fan-shaped rotating block (44) is arranged in the rotating block receiving groove (42), and a buffer spring (45) is arranged in the spring installation groove (43). The tip of the fan-shaped rotating block (44) is hinged to the inner end of the inclined surface (41) through an axle pin. A clamping groove (441) is provided on the outer side of the fan-shaped rotating block (44), and a wear-resistant gasket (46) is installed on the clamping groove (441). A boss (442) is provided on the outer side of the fan-shaped rotating block (44), and the boss (442) is sleeved with one end of the buffer spring (45).

3. A box lock according to claim 2, characterized in that: The width of the wear-resistant gasket (46) is greater than the thickness of the fan-shaped rotating block (44). The fan-shaped rotating block (44) is provided with a limiting protrusion (443), and the limiting protrusion (443) cooperates with a limiting groove (421) provided on the rotating block receiving groove (42).

4. A box lock according to claim 1 or 2, characterized in that: The transmission mechanism (7) comprises a rotating rod (71) and a protrusion (72); the fixed end of the rotating rod (71) is vertically fixed to the side wall of the lock core (3); the protrusion (72) is fixedly connected to the side wall surface of the oblique lock tongue (4); the lower end of the rotating rod (71) and the protrusion (72) can be moved with each other to realize that the lock core (3) rotates to drive the oblique lock tongue (4) to retract; the lower end of the rotating rod (71) has a sharp corner on one side that cooperates with the protrusion (72) and a round corner on the other side.

5. A box lock according to claim 4, characterized in that: The upper part of the rotating cavity (21) is provided with a fan-shaped limiting groove (211), and the lock core (3) is provided with a rotating rod limiting block (32), and the position of the rotating rod limiting block (32) and the position of the rotating rod (71) are symmetrical about the axis of the lock core (3).

6. A box lock according to claim 1, characterized in that: The lock body (2) is provided with a mounting opening (25) on the side thereof which is connected with the inner end of the lock bolt hole (23); a cover plate (26) fixed by screws is provided on the mounting opening (25); the reset elastic member (5) is a compression spring; one end of the compression spring is installed in a positioning hole (47) provided at the inner end of the oblique lock bolt (4); and the other end of the compression spring abuts against the inner wall of the cover plate (26).

7. A box lock according to claim 1, characterized in that: A sliding block (48) is provided on the side wall surface of the oblique locking tongue (4), and a sliding groove (231) is axially arranged on the inner wall of the locking tongue hole (23), and the sliding block (48) and the sliding groove (231) are slidably connected to each other.

8. The box lock according to claim 1, characterized in that: The keyhole (31) has a plurality of hole sections, including a hexagonal hole section (311), a cross slot hole section (312) and a slot hole section (313) which are arranged in sequence from the outside to the inside, and the slot hole section (313) and one of the slots of the cross slot hole section (312) are overlapped in position.

9. A meter box, characterized in that: It comprises a door body (1), a door frame (6) and a box lock as claimed in any one of claims 1 to 8, wherein the lock body (2) and the door body (1) or the door frame (6) are an integrated structure or an inlaid structure, the lock buckle (9) is installed relative to the lock body (2), two connecting holes (22) are provided, which are respectively located on the front and rear side surfaces of the lock body (2), and at least two conical four-wing notches (221) are spaced apart on the edge of the connecting hole (22), and a shape-matching insert (222) is embedded in the connecting hole (22), and a key through hole (223) is provided on the insert (222).

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