CN213927879U - Gas matching lock and meter box for safety and theft prevention - Google Patents

Abstract

The utility model relates to a gas equipment field, concretely relates to safety is gas complete sets lock and table case for theftproof. The safety anti-theft gas matching lock includes a lock body; the lock body comprises a lock cylinder, a sleeve and a locking plate, and the sleeve is fixed in the lock hole; the sleeve is sleeved outside the lock cylinder, and the lock cylinder is used for rotating relative to the sleeve; the locking plate is fixed at one end of the lock cylinder, and a circular truncated cone-shaped groove is formed in the end face, far away from the locking plate, of the lock cylinder. The technical problem that the lock structure of a fuel gas matching lock in the prior art is complex and easy to damage is solved. The fuel gas matching lock has simple structure and easy manufacture, reduces the manufacturing cost and creates conditions for the popularization of fuel gas in remote villages.

Description

Gas matching lock and meter box for safety and theft prevention

Technical Field

The utility model relates to a gas equipment field, concretely relates to safety is gas complete sets lock and table case for theftproof.

Background

In recent years, natural gas has also become popular in rural areas, and natural gas related equipment needs to be installed in rural areas. In rural areas, the gas meter is usually installed outdoors, and after the gas meter is installed, a gas meter box needs to be installed outside the gas meter, so that the effects of protecting the gas meter, preventing burglary and the like are achieved. The gas meter box is usually provided with a lock hole, and a gas matching lock for locking the box door on the meter box is arranged in the lock hole. Because the gas is matched and locked and is located outdoors, some artificial damage can be suffered, and the safety and the normal use of the gas equipment are seriously influenced. However, the fuel gas matching lock in the prior art has the disadvantages of complex structure, high manufacturing cost, poor safety, easy damage and the like, and it is urgently needed to design a fuel gas matching lock which can overcome the disadvantages so as to meet the requirements of practical application.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it is anticipated that the gas complete sets lock is used in safety theftproof, the complicated and easily destroyed technical problem of lock structure among the prior art has been solved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the safety anti-theft gas matching lock includes a lock body; the lock body comprises a lock cylinder, a sleeve and a locking plate, and the sleeve is fixed in the lock hole; the sleeve is sleeved outside the lock cylinder, and the lock cylinder is used for rotating relative to the sleeve; the locking plate is fixed at one end of the lock cylinder, and a circular truncated cone-shaped groove is formed in the end face, far away from the locking plate, of the lock cylinder.

The application method, the principle and the advantages of the scheme are as follows: when the gas matching lock is required to be opened or closed, the unlocking structure matched with the circular truncated cone-shaped groove needs to be inserted into the circular truncated cone-shaped groove, and under the condition that the circular truncated cone-shaped groove and the unlocking structure are matched (when the surfaces of the circular truncated cone-shaped groove and the unlocking structure are attached to each other, enough acting force can be applied to the lock cylinder by the unlocking structure, so that the lock cylinder rotates, and meanwhile, the locking plate is driven to rotate, so that the operations of unlocking, locking and the like are realized. If the cylinder is rotated by using a cylindrical object or a finger, it is difficult to rotate the cylinder because the contact surface is small. This has prevented to a certain extent that other people from opening the table case by purpose because the special unlocking structure who processes and round platform shape recess looks adaptation can not very easily obtain. In addition, if adopt traditional lock and key's structure, because the table case all sets up in the open air, child greets the play, and likes doing ill and vicious, probably blocks up narrow and small key hole with objects such as earth, leads to the key hole to be blocked up, and the lock can not be opened. But this scheme of adoption, round platform shape recess is cleared up very easily, is difficult to be blockked up. The fuel gas matching lock has simple structure and easy manufacture, reduces the manufacturing cost and creates conditions for the popularization of fuel gas in remote villages.

Preferably, as an improvement, the device further comprises a clamping structure; one end of the sleeve is provided with a first annular protrusion, the clamping structure and the first annular protrusion are respectively located at two ends of the lock hole, and the clamping structure is used for being matched with the first annular protrusion to fix the sleeve in the sleeve. Thus, the sleeve can be fixed at the lock hole through the matching of the clamping structure and the first annular protrusion.

Preferably, as an improvement, the lock further comprises a lock opener, wherein the lock opener comprises a lock opener circular table portion, and the lock opener circular table portion is used for being inserted into the circular table-shaped groove and driving the lock cylinder to rotate. Thus, the circular table part of the unlocking device is matched with the circular table-shaped groove to generate enough friction force, so that the lock core is rotated to open or close the gas matching lock.

Preferably, as an improvement, the side wall of the sleeve is provided with two limiting holes, and the two limiting holes are distributed in axial symmetry by taking the central axis of the sleeve as a symmetry axis; the clamping structure is a clamp spring, and the clamp spring comprises two clamping feet and an intermediate connecting part positioned between the two clamping feet; the inner sides of the two clamping feet are respectively clamped into the corresponding limiting holes. The clamp spring is simple in structure, the clamping pins are clamped into the corresponding limiting holes, and the clamp spring can be matched with the first annular bulges to limit axial movement of the sleeve, so that the sleeve is fixed at the position of the locking hole.

Preferably, as an improvement, the lock cylinder is sleeved with a spring, and the spring is positioned between the lock cylinder and the sleeve; the two clamping feet are used for clamping the outer surface of the lock core. Therefore, when the two clamping pins are tightly clamped on the lock cylinder, the two clamping pins are simultaneously clamped between two adjacent spring rings of the spring, and the two clamping pins further limit the axial movement of the lock cylinder because the spring is fixed on the lock cylinder.

Preferably, as an improvement, one end of the lock cylinder is provided with a mounting protrusion, and the mounting protrusion is arranged at one end of the lock plate in a penetrating manner; and one end of the mounting protrusion is in threaded connection with a fixing screw for limiting the locking plate to move along the axial direction of the lock cylinder. Thus, the locking plate can be prevented from falling off from the lock cylinder.

Preferably, as a refinement, the outer surface of the side wall of the mounting projection is provided with at least one flat surface. The through hole on the locking plate is provided with a matching surface matched with the plane, so that the locking plate and the mounting protrusion can be prevented from rotating relatively, and the locking plate can effectively rotate while the lock cylinder is ensured to rotate.

Preferably, as a modification, one end of the sleeve close to the locking plate is provided with a semi-annular protrusion. The semicircular bulge is used for limiting the rotation angle of the locking plate and preventing the lock body from being damaged. If the locking plate continues to rotate to the same direction to because the jump ring card is between two adjacent spring rings of spring, probably can produce great displacement in the axial direction between lock core and the sleeve, thereby make the lock core drop from the sleeve, the lock body takes place the damage.

Preferably, as an improvement, the middle part of the locking foot protrudes towards the locking plate, or the middle part of the locking foot protrudes towards the direction away from the locking plate. The protruding setting of block foot for flat block foot, more can be with more stable the fixing in lockhole department of lock body, prevent that the lock body from producing axial displacement.

Preferably, as an improvement, the meter box with the gas matching lock comprises a box body and a box door; the box body is provided with a front opening and a rear opening, and the box door is hinged with the box body; the middle part of the box door is provided with an observation window; the gas matching lock is arranged on the box body and comprises a lock body; the lock body comprises a lock cylinder, a sleeve and a locking plate, and the sleeve is fixed in the lock hole; the sleeve is sleeved outside the lock cylinder, and the lock cylinder is used for rotating relative to the sleeve; the locking plate is fixed at one end of the lock cylinder, and a circular truncated cone-shaped groove is formed in the end face, far away from the locking plate, of the lock cylinder.

By adopting the technical scheme, the meter box is provided with the fuel gas matching lock, the fuel gas matching lock is simple in structure and easy to manufacture, the manufacturing cost is reduced, and conditions are created for popularization of fuel gas in remote villages. Moreover, the gas matching lock can prevent other people from opening the meter box intentionally, and plays a role in preventing theft to a certain extent. And the circular truncated cone-shaped groove is very easy to clean and not easy to be blocked, and the gas matching lock is not easy to be damaged due to the blockage of the lock hole.

Drawings

Fig. 1 is a front view of a meter box of example 1.

Fig. 2 is a cross-sectional view a-a of fig. 1 (showing only the chest plate and the chest door and the gas distribution lock).

Fig. 3 is an enlarged view of a portion B of fig. 2.

Fig. 4 is a left side view of the gas assist lock of embodiment 1.

Fig. 5 is a longitudinal sectional view of fig. 4 (without the circlip).

Fig. 6 is a rear view of the lock body of embodiment 1 (showing the circlip, the spring not shown).

Fig. 7 is a rear view of the lock body and locking plate of embodiment 2 (without the set screw).

Fig. 8 is a left side view (without a set screw) of the lock body and locking tab of embodiment 2.

Fig. 9 is a left side view of the gas assist lock of embodiment 3.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the gas distribution box comprises a box body 1, a box door 2, a gas distribution lock 3, an observation window 4, a hinge 5, a box plate 6, a lock opener handle 7, a limiting part 8, an installation part 9, a limiting strip 10, a lock opener connecting rod 11, a lock opener round table part 12, a sleeve 13, a clamp spring 14, a locking plate 15, a fixing screw 16, a lock cylinder 17, a spring 18, a threaded hole 19, a round table-shaped groove 20, an installation bulge 21, a first annular bulge 22, a limiting hole 23, a clamping foot 24, a limiting sheet 25, a semi-annular bulge 26 and a plane 27.

Example 1

As shown in figures 1 and 2, the gas matching lock for safety and theft prevention and the meter box comprise a meter box body, wherein the meter box body comprises a box body 1, the box body 1 is formed by enclosing four box plates 6, and the four box plates 6 can be fixed together by adopting modes such as bonding, welding, screw connection and the like. The opening around the box 1, the front end of box 1 articulates through hinge 5 has chamber door 2, and observation window 4 has been seted up at the middle part of chamber door 2, and the interior bonding of observation window 4 is fixed with the baffle of transparent organic glass texture, fixes on observation window 4's lateral wall through the viscose around the baffle, has seted up the air vent on the baffle. As shown in fig. 2, the door 2 includes a first flat plate portion and a mounting portion 9 at a lower end of the first flat plate portion, the first flat plate portion and the mounting portion 9 are integrally formed, the thickness of the mounting portion 9 is larger than that of the first flat plate portion, and the mounting portion 9 is hollow in order to reduce a self-weight. The box plate 6 comprises a second flat plate part and a limiting part 8, the second flat plate part and the limiting part 8 are integrally formed, the limiting part 8 is close to the box door 2, and the thickness of the limiting part 8 is larger than that of the second flat plate part. When the door 2 is closed, the lower surface of the mounting portion 9 faces the upper surface of the stopper portion 8. As shown in fig. 3, a limiting strip 10 is integrally formed on the upper surface of the limiting portion 8, and the limiting strip 10 is parallel to the limiting portion 8 and is used for limiting the door 2 from turning inside the box body 1. In order to reduce the dead weight, the stopper 8 is of a hollow design. The four box plates 6 are consistent in structure, can be formed by cutting the same plates according to actual requirements, and are spliced into the box body 1.

As shown in fig. 2 and 3, the gas matching lock 3 is inserted into the mounting portion 9, and the mounting portion 9 is provided with a through hole (lock hole) through which the gas matching lock 3 passes. With reference to fig. 4 and 5, the gas matching lock 3 includes a lock body, a locking structure and a lock opener, and the lock opener includes an integrally formed lock opener connecting rod 11, a lock opener boss 12 and a lock opener handle 7. The lock opener connecting rod 11 is positioned between the lock opener circular table part 12 and the lock opener handle 7, the lock opener handle 7 is perpendicular to the lock opener connecting rod 11, and the lock opener circular table part 12 is in a circular table shape with a small left and a large right. The lock body comprises a lock cylinder 17, a sleeve 13 and a locking plate 15. The left end of the lock core 17 is provided with a mounting protrusion 21, in this embodiment, the mounting protrusion 21 is cylindrical, and a threaded hole 19 is formed on the left end surface of the mounting protrusion 21. The locking plate 15 is provided with a through hole matched with the mounting protrusion 21, and the mounting protrusion 21 penetrates into one end of the locking plate 15. The outer surface of the mounting protrusion 21 is tightly clamped inside the through hole of the locking plate 15, so that the locking plate 15 cannot rotate on the mounting protrusion 21. In order to prevent the locking piece 15 from falling off, a fixing screw 16 is screwed into the screw hole 19, and the fixing screw 16 can prevent the locking piece 15 from falling off from the left side of the mounting protrusion 21. The right end face of the lock core 17 is provided with a truncated cone-shaped recess which is called a truncated cone-shaped groove 20, and the truncated cone-shaped groove 20 is small at the left and large at the right and is used for accommodating the circular table part 12 of the unlocking device. When the key cylinder 12 is inserted into the cylinder recess 20, the outer surface of the key cylinder 12 is fitted to the inner surface of the cylinder recess 20. The sleeve 13 is sleeved outside the lock cylinder 17 and coaxially arranged, a second annular protrusion is integrally formed on the right side of the lock cylinder 17, and a first annular protrusion 22 is integrally formed on the right side of the sleeve 13. The second annular projection is in contact with the inside of the side wall of the sleeve 13 and the lock cylinder 17 can rotate in the sleeve 13. The outer side of the lock core 17 is also sleeved with a spring 18, one end of the spring 18 is welded and fixed on the second annular bulge, and the spring 18 is positioned between the lock core 17 and the sleeve 13.

Referring to fig. 2 and 3, the sleeve 13 is inserted into the mounting portion 9 (the mounting portion 9 is provided with a through hole through which the sleeve 13 passes, which is referred to herein as a lock hole), but the diameter of the lock hole is smaller than the diameter of the first annular projection 22. The sleeve 13 is provided with two limiting holes 23 (strip-shaped holes) as shown in fig. 4, the two limiting holes 23 are axially symmetrically distributed by taking the central axis of the sleeve 13 as a symmetry axis, and the limiting holes 23 are perpendicular to the axial direction of the sleeve 13. In order to fix the lock body of the gas matching lock 3 at the lock hole, the lock body is fixed at the lock hole by using the clamping structure and the first annular bulge 22. In this embodiment, the engaging structure is a snap spring 14 as shown in fig. 4 and 6, the snap spring 14 includes two engaging legs 24 and an intermediate connecting portion connecting the engaging legs 24 together, the intermediate connecting portion and the two engaging legs 24 are integrally formed, and the intermediate connecting portion includes a limiting piece 25. The specific fixing mode is as follows: with reference to fig. 2 and 3, the lock body is inserted into the lock hole; referring to fig. 4 and 6, the two engaging legs 24 of the snap spring 14 are respectively snapped into corresponding limiting holes 23 on the sleeve 13, and at this time, the inner sides of the engaging legs 24 are tightly snapped onto the outer surface of the lock core 17. The limiting piece 25 is in contact with the upper surface of the mounting portion 9 to prompt that the clamp spring 14 is pushed to a proper position. At this time, the latch spring 14 is engaged with the first annular protrusion 22 to fix the sleeve 13 at the keyhole. In addition, the two clamping feet 24 clamp the lock core 17, so that the axial movement of the lock core 17 is limited. And the spring 18 as shown in fig. 5 is sleeved on the lock core 17, when the two engaging legs 24 are tightly clamped on the lock core 17, the two engaging legs 24 are also clamped between two adjacent spring rings of the spring 18, and because the spring 18 is fixed on the lock core 17, the two engaging legs 24 further limit the axial movement of the lock core 17. In order to fix the lock body at the locking hole more stably, the middle of the engaging leg 24 protrudes toward the locking piece 15. The lock core 17 can be driven by the lock opener to rotate, so as to drive the lock plate 15 to rotate. When the locking plate 15 rotates to the position shown in fig. 3, the lower end of the locking plate 15 is located on the left side of the limiting portion 8, so that the box door 2 is prevented from rotating counterclockwise, and the meter box is locked. When the locking piece 15 rotates and does not block the anticlockwise rotation of the box door 2 any more, the meter box can be opened.

In this scheme, the round platform part 12 of the unlocking device and the round platform-shaped groove 20 are round platform-shaped, and only under the condition that the two are matched (when the surfaces of the two are attached, enough friction force is generated), the unlocking device can apply enough acting force to the lock cylinder 17 to drive the lock cylinder 17 to rotate. If a cylindrical object or a finger or the like is used, the lock cylinder 17 is difficult to rotate, which prevents others from maliciously opening the meter box to destroy the structure in the meter box to a certain extent, and the lock cylinder is not easy to obtain because the lock cylinder is specially processed into a circular truncated cone-shaped object with a suitable shape. In addition, if adopt traditional lock and key's structure, because the table case all sets up in the open air, child greets the play, and likes doing ill and vicious, probably blocks up narrow and small key hole with objects such as earth, leads to the key hole to be blocked up, and the lock can not be opened. But this scheme of adoption, round platform shape recess 20 is cleared up very easily, is difficult to blockked up.

Example 2

This embodiment is basically the same as embodiment 1, but different from embodiment 1 in that a series of structures for limiting the rotation of the locking piece 15 are provided, specifically as follows:

as shown in fig. 7, a flat surface 27 is provided on the outer surface of the side wall of the mounting protrusion 21, and a mating surface for mating with the flat surface 27 is provided on the through hole of the locking piece 15, so that the locking piece 15 and the mounting protrusion 21 can be prevented from rotating relatively. With the arrangement of embodiment 1, the locking piece 15 and the mounting projection 21 are easily loosened. As shown in fig. 8, a semi-annular protrusion 26 is integrally formed at the left end of the sleeve 13, and the semi-annular protrusion 26 is away from the limiting part 8 for limiting the rotation angle of the locking plate 15. If the locking piece 15 continues to rotate in the same direction and the circlip 14 is clamped between two adjacent coils of the spring 18, there is a possibility that a large displacement may occur between the lock cylinder 17 and the sleeve 13 in the axial direction, so that the lock cylinder 17 falls off from the sleeve 13 and the lock body is damaged.

Example 3

This embodiment improves on the basis of embodiment 1 or embodiment 2, as shown in fig. 9, has adjusted the jump ring 14 structure, specifically is: the middle part of the engaging leg 24 does not protrude toward the locking plate 15, but protrudes away from the locking plate 15, and the latch spring 14 of this embodiment can also fix the lock body on the door 2.

While the embodiments of the present invention have been described in detail with reference to the accompanying drawings, it is to be understood that the present invention is not limited to the embodiments and that various changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention. These should also be considered as the scope of protection of the present invention, and these do not affect the effect of the implementation of the present invention and the utility of the patent. The techniques, shapes, and structural parts, which are omitted from the description of the present invention, are all known techniques.

Claims (10)

1. The safety anti-theft gas matching lock is characterized by comprising a lock body; the lock body comprises a lock cylinder, a sleeve and a locking plate, and the sleeve is fixed in the lock hole; the sleeve is sleeved outside the lock cylinder, and the lock cylinder is used for rotating relative to the sleeve; the locking plate is fixed at one end of the lock cylinder, and a circular truncated cone-shaped groove is formed in the end face, far away from the locking plate, of the lock cylinder.

2. The gas complete set lock for safety and theft prevention according to claim 1, further comprising a snap structure; one end of the sleeve is provided with a first annular protrusion, the clamping structure and the first annular protrusion are respectively located at two ends of the lock hole, and the clamping structure is used for being matched with the first annular protrusion to fix the sleeve in the sleeve.

3. The gas-fueled lock set forth in claim 2 further comprising an unlocking device including an unlocking device boss for inserting into the boss recess and rotating the lock cylinder.

4. The gas complete set lock for safety and theft prevention according to claim 3, wherein the side wall of the sleeve is provided with two limiting holes, and the two limiting holes are distributed in axial symmetry with the central axis of the sleeve as a symmetry axis; the clamping structure is a clamp spring, and the clamp spring comprises two clamping feet and an intermediate connecting part positioned between the two clamping feet; the inner sides of the two clamping feet are respectively clamped into the corresponding limiting holes.

5. The gas-fueled lock set forth in claim 4 wherein the lock cylinder is externally fitted with a spring, the spring being located between the lock cylinder and the sleeve; the two clamping feet are used for clamping the outer surface of the lock core.

6. The gas complete set lock for safety and theft prevention according to claim 5, wherein one end of the lock cylinder is provided with a mounting protrusion, and the mounting protrusion is arranged at one end of the lock sheet in a penetrating way; and one end of the mounting protrusion is in threaded connection with a fixing screw for limiting the locking plate to move along the axial direction of the lock cylinder.

7. The gas distribution lock for security and theft prevention according to claim 6, wherein an outer surface of the side wall of the installation projection is provided with at least one flat surface.

8. The gas-fueled lock set forth in claim 7 wherein the sleeve has a semi-annular projection at an end thereof adjacent the locking tab.

9. The gas-fueled cooperative lock for safety and theft prevention according to claim 8, wherein the middle portion of the engaging leg protrudes in a direction toward the locking piece, or the middle portion of the engaging leg protrudes in a direction away from the locking piece.

10. A meter box with a gas matching lock, which is characterized by comprising a meter box body, wherein the meter box body is provided with the gas matching lock for safety and theft prevention according to any one of claims 1 to 9; the meter box body comprises a box body and a box door; the box body is provided with a front opening and a rear opening, and the box door is hinged with the box body; the middle part of the box door is provided with an observation window.

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