Lock catch assembly and gas meter battery cover structure comprising same

Abstract

The invention relates to a lock catch assembly and a gas meter battery cover structure comprising the lock catch assembly. The gas meter battery cover structure comprises a lock catch box body, a lock catch pressing block, a lock seat, a reset spring and two lock catches, the lock catch pressing block is fixedly arranged on the lock seat, and the two lock catches are fixedly arranged on the top of the lock seat and assembled on the two sides of the lock catch pressing block. The lock catch pressing block, the lock seat and the two lock catches are arranged in the lock catch box body; a mounting groove with a downward opening is formed in the bottom of the lock seat, and the reset spring is arranged in the mounting groove. A through hole is formed in the top of the lock seat, a lock rod mechanism is assembled in the through hole, and a clamping groove matched with the lock rod mechanism is formed in one side of the lock catch box body; according to the invention, the design is ingenious, the end part of the lock catch plate is pressed downwards, the end part of the lock catch plate extends between the two lock catches, and under the compression of the reset spring, the lock seat and the lock rod mechanism are driven to move downwards, and the guide lock column is switched between the locking groove and the unlocking groove, so that the battery cover and the assembly part are opened or locked, the installation is reliable, and the structure is compact.

Description

Technical Field

[0001] The invention belongs to the technical field of gas meter parts, and in particular relates to a lock assembly and a gas meter battery cover structure comprising the lock assembly. Background Art

[0002] Many devices in the prior art need to increase their energy by installing batteries. For example, in the prior art, the smart gas meter and the smart gas meter controller rely on the energy provided by the battery in the smart gas meter controller box to realize their display, counting and transmission functions. However, since gas meters are required to be installed in ventilated places such as kitchens or balconies, the kitchen is full of oil smoke, and the balcony is not only exposed to sunlight, but also a place where moisture and dust gather under severe weather conditions. Long-term use will have adverse effects on the battery.

[0003] At present, the battery cover design of traditional gas meters often has problems such as being difficult to open, requiring tools or complicated operation, which not only increases the difficulty for users to replace batteries, but may also cause damage to the battery cover or the inside of the gas meter due to improper operation; Application No. 202022216061.5 discloses an Internet of Things gas meter, including a gas meter body, a battery box fixedly connected to the gas meter body, a battery contained in the battery box, an opening on the side of the battery box facing the gas meter body, a power board provided at the opening of the battery box, the power board capable of sealing the opening, and the power board electrically connected to the battery; the technical solution adopts an L-shaped power board to facilitate a tighter seal with the opening of the battery box. However, in this solution, the battery box is sealed by the power board, and then the battery cover is covered. However, there is no opening device between the battery cover and the battery box in this solution, and the opening method requires manual operation of the lock. Since the manual operation to open the battery cover is not convenient to use, the opening efficiency is low, which brings inconvenience to the safety of use.

[0004] In view of the above technical problems, improvements need to be made. Summary of the invention

[0005] The present invention aims to overcome the defects in the above-mentioned prior art and provide a locking assembly and a gas meter battery cover structure including the locking assembly, which has a simple and reasonable structure, ingenious design, can reduce maintenance costs, and effectively improve the convenience of user replacement of batteries.

[0006] In order to achieve the above objectives, the technical solution adopted by the present invention is: a lock assembly, including a lock box, a lock pressing block, a lock seat, a return spring and two locks; the lock pressing block is fixed on the lock seat, and the two locks are fixed on the top of the lock seat and assembled on both sides of the lock pressing block; the lock pressing block, the lock seat and the two locks are built into the lock box; a mounting groove with an opening downward is formed at the bottom of the lock seat, and the return spring is built into the mounting groove; a through hole is formed on the top of the lock seat, and a lock rod mechanism is assembled in the through hole, and a card slot matched with the lock rod mechanism is formed on one side of the lock box.

[0007] As a preferred embodiment of the present invention, the locking rod mechanism includes a locking shaft, a connecting locking rod, a limiting locking column and a guiding locking column; the locking shaft is assembled in the through hole, and the rotation stroke is limited by a limiting mechanism; the connecting locking rod is vertically fixed on one side of the locking shaft, the limiting locking column is fixed on the outside of the connecting locking rod, corresponding to the position of the locking shaft, the guiding locking column is fixed on the outside of the bottom of the connecting locking rod, and the guiding locking column is built into the card slot.

[0008] As a preferred embodiment of the present invention, the card slot includes a locking slot and an unlocking slot, and the locking slot and the unlocking slot are in a V-shaped structure; a guide block for guiding the movement of the locking column is fixed in the lock box, and the guide block is attached to the connection between the locking slot and the unlocking slot.

[0009] As a preferred embodiment of the present invention, the lock includes an elastic part, a connecting part and a locking part; the elastic part, the connecting part and the locking part are fixedly connected and integrally formed; the elastic part is in a U-shaped structure and is fixedly arranged at the end of the lock seat, and the elastic part and the locking part are in a conical structure and include a guide surface and a locking surface; the angle between the guide surface and the locking surface is 60° to 80°.

[0010] As a preferred embodiment of the present invention, a guide block is fixedly provided on one side of the lock seat away from the card slot; correspondingly, a guide groove is formed on the lock case along its height direction.

[0011] As a preferred embodiment of the present invention, the limiting mechanism includes a limiting portion in a stepped state, which is fixed on the lock seat and located at the top of the through hole. A guide limiting surface that matches the limiting portion is formed on the lock shaft, and the limiting portion abuts against the guide limiting surface.

[0012] A gas meter battery cover structure comprises a battery assembly and a battery cover, wherein the battery assembly is provided with an assembly portion, and the battery cover is rotatably assembled on the battery assembly for opening and closing the assembly portion; a receiving cavity for accommodating the battery is formed in the assembly portion, and the assembly portion and the battery cover are locked by a locking device; the locking device comprises a latch assembly and a latch plate; the latch plate is assembled on the battery cover, and the latch assembly is fixed on the assembly portion; the battery cover and the assembly portion are detachably connected by the cooperation of the latch plate and the latch assembly.

[0013] As a preferred embodiment of the present invention, an annular sealing groove is provided on the assembly portion, and a sealing ring is installed in the annular sealing groove. Correspondingly, convex ribs are arranged circumferentially on the battery cover. When the battery cover is assembled on the assembly portion, the convex ribs on the battery cover abut against and squeeze the sealing ring; an assembly groove is formed between the annular sealing groove and the battery assembly part, and the locking assembly is built into the assembly groove.

[0014] As a preferred embodiment of the present invention, a positioning plate is fixedly provided on one side of the battery cover close to the assembly part, a groove is formed on the positioning plate, a locking plate is fitted in the groove of the positioning plate, and the top of the locking plate is on the same horizontal plane as the top of the positioning plate; locking blocks are formed on both sides of the top of the locking plate.

[0015] As a preferred embodiment of the present invention, the battery assembly is fixedly connected with two spaced-apart connection brackets, a positioning groove is formed in the middle of the connection bracket, a torsion spring is installed in the positioning groove, the lower part of the battery cover is fixedly connected with a connection block adapted to the connection bracket, the connection block is equipped with a positioning column, the positioning column passes through the connection block, the connection bracket and the torsion spring in sequence; it is used to assemble the battery cover on the battery assembly; the surface of the battery cover is provided with an opening indication mark and an anti-slip protrusion; the opening indication mark and the anti-slip protrusion are integrally formed with the battery cover.

[0016] The beneficial effects of the present invention are: 1. The present invention has a simple structure. When the battery cover is closed, a one-touch opening mechanism is adopted: the battery cover is designed with a one-touch opening switch. The user only needs to gently press the lock plate position corresponding to the battery cover, and the lock plate and the lock assembly are opened or closed, so that the battery cover can be automatically opened. There is no need to use any tools or force to open it. The operation is simple and quick.

[0017] 2. The present invention is cleverly designed. By pressing the end of the lock plate downward, the end of the lock plate extends between the two locks and rests on the lock pressing block. Under the compression of the reset spring, the lock seat and the lock rod mechanism are driven to move downward. The guide lock column on the lock rod mechanism switches between the locking groove and the unlocking groove, thereby opening or locking the battery cover and the assembly part. The installation is reliable and the structure is compact.

[0018] 3. The present invention is provided with anti-slip protrusions to increase the friction when the user presses to prevent slipping; at the same time, a clear opening indication mark is provided on the battery cover or the gas meter housing to guide the user to operate correctly.

[0019] 4. The convex rib of the present invention squeezes the sealing ring; the sealing ring can produce greater deformation, thereby improving the sealing effect of the sealing ring in the annular sealing groove; the battery box and the battery installed therein can be located in the annular annular sealing groove structure, providing all-round sealing for the battery box and the battery. The battery containing structure of this scheme has good sealing performance, simple structure and high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of a gas meter in an embodiment of the present invention with a battery cover in an open state; Figure 2 This is a schematic diagram of the structure of a gas meter in an open battery cover state according to an embodiment of the present invention; Figure 3 For the embodiment of the present invention Figure 2 A partial enlarged view of the A direction; Figure 4 This is a diagram of the battery cover in use according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the battery cover structure of an embodiment of the present invention; Figure 6 This is a front view of a battery cover according to an embodiment of the present invention; Figure 7 This is a front view of a buckle lock assembly according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of a buckle lock assembly according to an embodiment of the present invention; Fig. 9 This is a schematic diagram of a locking state of a buckle lock assembly according to an embodiment of the present invention; Fig.10 This is a schematic diagram of a buckle lock assembly after removing the buckle box according to an embodiment of the present invention; Fig.11 This is a state diagram of the buckle lock assembly after the buckle box is removed according to the embodiment of the present invention; Fig.12 This is a schematic diagram of the connection between the lock base and the lock buckle according to an embodiment of the present invention; Fig.13 This is a schematic diagram of a lock box according to an embodiment of the present invention; Fig.14 It is a structural schematic diagram of a locking rod mechanism according to an embodiment of the present invention; 1 , a battery assembly 1 , a battery cover 2 , an assembly portion 3 , a locking device 4 , an assembly groove 5 , a locking rod mechanism 6 , a limiting mechanism 7 , a card slot 8 , a locking plate 9 , a connecting bracket 10 , a positioning groove 11 , a torsion spring 12 , a guide block 13 , an opening indication mark 14 , an anti-slip protrusion 15 , a positioning plate 20 , a groove 21 , a connecting block 22 , a positioning column 23 , a rib 24 , an accommodating cavity 30 , an annular sealing groove 31 , a sealing ring 32 , a locking assembly 40 , a locking box 41 , a locking pressing block 42 , a locking seat 43 , a reset spring 44 , a locking buckle 45 , an installation groove 46 , a through hole 47 , a guide groove 48 , a guide block 49 , a locking shaft 60 , a connecting locking rod 61 , a limiting locking column 62 , a connecting locking column 63 , a guiding limiting surface 64 , a limiting portion 70 , Locking groove 80, unlocking groove 81, locking block 90, elastic portion 451, connecting portion 452, locking portion 453, guiding surface 453-1, locking surface 453-2. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0022] Example: like Figure 10-11 As shown, the lock assembly 40 includes a lock box 41, a lock pressing block 42, a lock seat 43, a return spring 44 and two locks 45; the lock pressing block 42 is fixed on the lock seat 43, and the two locks 45 are fixed on the top of the lock seat 43 and assembled on both sides of the lock pressing block 42; the lock pressing block 42, the lock seat 43 and the two locks 45 are built into the lock box 41; a mounting groove 46 with a downward opening is formed at the bottom of the lock seat 43, and the return spring 44 is built into the mounting groove 46; a through hole 47 is formed at the top of the lock seat 43, and a lock rod mechanism 6 is assembled in the through hole 47, and a card slot 8 compatible with the lock rod mechanism 6 is formed on one side of the lock box 41.

[0023] The end of the lock plate 9 is pressed downward, and the end of the lock plate 9 extends between the two locks 45 and rests on the lock pressing block 42. Under the compression of the reset spring 44, the lock seat 43 and the lock rod mechanism 6 are driven to move downward, and the guide lock column 63 on the lock rod mechanism 6 switches between the locking groove 80 and the unlocking groove 81, thereby opening or locking the battery cover 2 and the assembly part 3.

[0024] like Fig.14 As shown, the locking rod mechanism 6 includes a locking shaft 60, a connecting locking rod 61, a limiting locking column 62 and a guiding locking column 63; the locking shaft 60 is assembled in the through hole 47, and the rotation stroke is limited by the limiting mechanism 7; the connecting locking rod 61 is vertically fixed on one side of the locking shaft 60, the limiting locking column 62 is fixed on the outer side of the connecting locking rod 61, corresponding to the position of the locking shaft 60, the guiding locking column 63 is fixed on the outer side of the bottom of the connecting locking rod 61, and the guiding locking column 63 is built into the card slot 8.

[0025] like Figure 7-Figure 8 As shown, the card slot 8 includes a locking slot 80 and an unlocking slot 81, and the locking slot 80 and the unlocking slot 81 are in a V-shaped structure. When the guide lock column 63 is located in the locking slot 80, the battery cover 2 and the assembly part 3 are in a closed state. When the guide lock column 63 is located in the unlocking slot 81, the battery cover 2 and the assembly part 3 are in an open state.

[0026] like Fig.13 As shown, a guide block 13 for guiding the movement of the locking column 62 is fixedly provided in the lock box 41, and the guide block 13 is fitted at the connection between the locking groove 80 and the unlocking groove 81; when the lock pressing block 42 is pressed downward by the end of the lock plate 9, the guide lock column 63 on the locking rod mechanism 6 moves downward along the guide block 13, so that the guide lock column 63 switches between the locking groove 80 and the unlocking groove 81, thereby improving the stability and safety of opening or locking the battery cover 2 and the assembly part 3.

[0027] like Fig.12 As shown, the lock buckle 45 includes an elastic portion 451, a connecting portion 452 and a locking portion 453; the elastic portion 451, the connecting portion 452 and the locking portion 453 are fixedly connected and integrally formed; the structural strength and overall firmness of the entire lock buckle 45 are improved, and the safety of use is further ensured.

[0028] Moreover, the elastic portion 451 is in a U-shaped structure and is fixed to the end of the lock seat 43, so that the elastic portion 451 can have a certain deformation recovery force, and can be compressed when the lock buckle 45 locks the lock buckle plate 9, and restored when the lock buckle 45 is separated from the lock buckle plate 9; the elastic portion locking portion 453 is in a conical structure, including a guide surface 453-1 and a locking surface 453-2; the angle between the guide surface 453-1 and the locking surface 453-2 is 60°~80°; in this embodiment, the angle between the guide surface 453-1 and the locking surface 453-2 is 70°.

[0029] When the battery cover 2 is closed, the lock block 90 on the lock plate 9 contacts the guide surface 453-1, and when the operator presses the battery cover 2, the lock block 90 enters between the two locking surfaces 453-2. At the same time, the lock 45 enters into the lock box 41 under the compression of the return spring 44. Through the provided lock rod mechanism 6, the guide lock column 63 on the lock rod mechanism 6 moves from the unlocking groove 81 to the locking groove 80, and the lock block 90 is locked between the two locking surfaces 453-2, so that the battery cover 2 and the assembly part 3 are connected to each other.

[0030] When the battery cover 2 needs to be separated from the assembly part 3, the battery cover 2 is pressed to move the lock plate 9 downward, thereby driving the lock rod mechanism 6 to move, and the guide lock column 63 on the lock rod mechanism 6 moves from the locking groove 80 to the unlocking groove 81. The lock catch 45 moves out of the lock catch box 41 under the reset of the reset spring 44, and the two lock catches 45 are separated, so that the lock catch block 90 moves out of the two lock catches 45, so that the battery cover 2 and the assembly part 3 are separated from each other.

[0031] like Fig. 9 As shown, Fig. 9 It is a schematic diagram of the locking state of the buckle lock assembly of an embodiment of the present invention; a guide block 49 is fixedly provided on the side of the lock seat 43 away from the card slot 8; correspondingly, a guide groove 48 is formed on the lock box 41 along its height direction; by arranging the guide block 49 to move up and down in the guide groove 48, the movement of the lock seat 43 in the lock box 41 is made more stable and efficient, thereby improving the safety of use.

[0032] like Fig.12 and Fig.14As shown, the limiting mechanism 7 includes a limiting portion 70 in a stepped state, the limiting portion 70 is fixed on the lock seat 43 and is located at the top of the through hole 47, and a guide limiting surface 64 matched with the limiting portion 70 is formed on the lock shaft 60, and the limiting portion 70 abuts against the guiding limiting surface 64; when the lock pressing block 42 is pressed downward by the end of the lock plate 9, the limiting portion 70 abuts against the guiding limiting surface 64, and as the pressing gradually deepens, a displacement will occur between the end of the limiting portion 70 and the guiding limiting surface 64, thereby causing the limiting lock column 62 and the guiding lock column 63 on the lock rod mechanism 6 to move in conjunction, and the guiding lock column 63 can switch between the locking groove 80 and the unlocking groove 81 more smoothly, making it easier to lock or separate the battery cover 2 and the assembly portion 3.

[0033] like Figure 1-Figure 2 As shown, Figure 1 This is a front view of a gas meter in an embodiment of the present invention with a battery cover in an open state; Figure 2 This is a schematic diagram of the structure of a gas meter in an open battery cover state according to an embodiment of the present invention; Among them, the gas meter battery cover structure includes a battery assembly 1 and a battery cover 2, the battery assembly 1 is provided with an assembly part 3, the battery cover 2 is rotatably assembled on the battery assembly 1, and is used to open and close the assembly part 3; a accommodating cavity 30 for accommodating the battery is formed in the assembly part 3, and the assembly part 3 and the battery cover 2 are locked by a locking device 4; the locking device 4 includes a locking assembly 40 and a locking plate 9; wherein the locking plate 9 is assembled on the battery cover 2, and the locking assembly 40 is fixed on the assembly part 3; the battery cover 2 and the assembly part 3 are detachably connected through the cooperation of the locking plate 9 and the locking assembly 40.

[0034] In this embodiment, when the battery cover 2 is closed, a one-touch opening mechanism is adopted: the battery cover 2 is designed with a one-touch opening switch, and the user only needs to gently press the position of the locking plate 9 corresponding to the battery cover 2, and the locking plate 9 and the locking assembly 40 will open or close, so that the battery cover 2 can be automatically popped open without using any tools or force to open it, and the operation is simple and quick.

[0035] The assembly portion 3 is provided with an annular sealing groove 31 , in which a sealing ring 32 is installed. Correspondingly, the battery cover 2 is circumferentially provided with convex ribs 24 . When the battery cover 2 is assembled on the assembly portion 3 , the convex ribs 24 on the battery cover 2 abut against and squeeze the sealing ring 32 .

[0036] In the present embodiment, when the battery cover 2 is closed, the convex rib 24 on the battery cover 2 extends into the annular sealing groove 31 on the assembly portion 3, so that the convex rib 24 squeezes the sealing ring 32; the sealing ring 32 can produce a greater deformation, thereby improving the sealing effect of the sealing ring 32 in the annular sealing groove 31; and the annular sealing groove 31 and the sealing ring 32 corresponding thereto are both annular, and the accommodating cavity 30 for installing the battery is located in the annular sealing groove 31, and the sealing ring 32 is made of rubber; therefore, when the battery cover 2 is closed, the battery box and the battery installed therein can be located in the annular annular sealing groove 31 structure, providing all-round sealing for the battery box and the battery, and the battery accommodating structure of the present scheme has good sealing performance, simple structure and high practicality.

[0037] like Figure 3 As shown, an assembly groove 5 is formed between the annular sealing groove 31 and the battery assembly 1, and the lock assembly 40 is built into the assembly groove 5; the design is ingenious and also reasonably utilizes the structural space utilization rate of the gas meter. The annular sealing groove 31 is located at the upper end of the assembly part 3, and the assembly groove 5 is also located at the upper end of the assembly part 3, and is clamped between the annular sealing groove 31 and the battery assembly 1. Firstly, the installation stability and safety of the lock assembly 40 are improved, and at the same time, the assembly between the battery cover 2 and the assembly part 3 will not be interfered with by other components.

[0038] like Figure 4-Figure 5 As shown, a positioning plate 20 is fixedly provided on one side of the battery cover 2 close to the assembly part 3, and a groove 21 is formed on the positioning plate 20. The locking plate 9 is fitted in the groove 21 of the positioning plate 20, and the top of the locking plate 9 is on the same horizontal plane as the top of the positioning plate 20; locking blocks 90 are formed on both sides of the top of the locking plate 9; the inner diameter of the groove 21 is consistent with the outer diameter of the assembly groove 5, so that when the battery cover 2 is assembled with the assembly part 3, the groove 21 on the positioning plate 20 is snap-fitted with the assembly groove 5, and at the same time, the locking plate 9 and the locking assembly 40 are snap-fitted and locked with each other.

[0039] like Figure 2 As shown, the battery assembly 1 is fixedly connected with two spaced connection brackets 10, a positioning groove 11 is formed in the middle of the connection bracket 10, and a torsion spring 12 is installed in the positioning groove 11. The lower part of the battery cover 2 is fixedly connected with a connection block 22 adapted to the connection bracket 10, and a positioning column 23 is installed on the connection block 22. The positioning column 23 passes through the connection block 22, the connection bracket 10 and the torsion spring 12 in sequence; it is used to assemble the battery cover 2 on the battery assembly 1. The above scheme allows the battery cover 2 to be rotatably connected to the battery assembly 1, thereby improving the assembly efficiency between the two. At the same time, the torsion spring 12 can facilitate the opening of the battery cover 2, and the structure is simple and the operation is simple.

[0040] like Figure 6As shown, the surface of the battery cover 2 is provided with an opening indication mark 14 and an anti-skid protrusion 15; the opening indication mark 14 and the anti-skid protrusion 15 are integrally formed with the battery cover 2; the structural strength and overall firmness of the entire battery cover 2 are improved, and the safety of use is further ensured; and the anti-skid protrusion 15 is provided to increase the friction when the user presses to prevent slipping; at the same time, a clear opening indication mark 14 is provided on the battery cover or the gas meter housing to guide the user to operate correctly.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention; various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0042] Although the present invention uses more reference numerals in the figures: battery assembly 1, battery cover 2, assembly part 3, locking device 4, assembly groove 5, locking rod mechanism 6, limiting mechanism 7, card slot 8, lock plate 9, connecting bracket 10, positioning groove 11, torsion spring 12, guide block 13, opening indication mark 14, anti-slip protrusion 15, positioning plate 20, groove 21, connecting block 22, positioning column 23, rib 24, accommodating cavity 30, annular sealing groove 31, sealing ring 32, lock assembly 40, lock box 41, lock pressing block 42, lock seat 43, reset spring 44, lock 45, installation groove 46, through hole 47, guide groove 48, guide block 49, lock shaft 60, connecting lock rod 61, limiting lock column 62, connecting lock column 63, guide limiting surface 64, limiting part 70, The terms locking groove 80, unlocking groove 81, locking block 90, elastic portion 451, connecting portion 452, locking portion 453, guide surface 453-1, and locking surface 453-2 are used herein, but the possibility of using other terms is not excluded; these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A lock assembly, characterized in that: The invention comprises a lock case (41), a lock pressing block (42), a lock seat (43), a return spring (44) and two locks (45); the lock pressing block (42) is fixedly arranged on the lock seat (43), and the two locks (45) are fixedly arranged on the top of the lock seat (43) and assembled on both sides of the lock pressing block (42); the lock pressing block (42), the lock seat (43) and the two locks (45) are built into the lock case (41); a mounting groove (46) with an opening facing downward is formed at the bottom of the lock seat (43), and the return spring (44) is built into the mounting groove (46); a through hole (47) is formed at the top of the lock seat (43), and a lock rod mechanism (6) is assembled in the through hole (47); and a card slot (8) adapted to the lock rod mechanism (6) is formed on one side of the lock case (41).

2. The lock assembly according to claim 1, characterized in that: The locking rod mechanism (6) comprises a locking shaft (60), a connecting locking rod (61), a limiting locking column (62) and a guiding locking column (63); the locking shaft (60) is assembled in the through hole (47) and its rotational travel is limited by a limiting mechanism (7); the connecting locking rod (61) is vertically fixed to one side of the locking shaft (60); the limiting locking column (62) is fixed to the outside of the connecting locking rod (61) and corresponds to the position of the locking shaft (60); the guiding locking column (63) is fixed to the outside of the bottom of the connecting locking rod (61); and the guiding locking column (63) is built into the card slot (8).

3. The lock assembly according to claim 1, characterized in that: The locking slot (8) comprises a locking slot (80) and an unlocking slot (81), and the locking slot (80) and the unlocking slot (81) are in a V-shaped structure; a guide block (13) for guiding the movement of the limiting locking column (62) is fixedly arranged in the lock case (41), and the guide block (13) is fitted at the connection between the locking slot (80) and the unlocking slot (81).

4. The lock assembly according to claim 1, characterized in that: The lock buckle (45) comprises an elastic portion (451), a connecting portion (452) and a locking portion (453); the elastic portion (451), the connecting portion (452) and the locking portion (453) are fixedly connected and integrally formed; the elastic portion (451) is a U-shaped structure, fixedly arranged at the end of the lock seat (43); the elastic portion locking portion (453) is a conical structure, comprising a guide surface (453-1) and a locking surface (453-2); the angle between the guide surface (453-1) and the locking surface (453-2) is 60° to 80°.

5. The lock assembly according to claim 1, characterized in that: A guide block (49) is fixedly provided on one side of the lock seat (43) away from the slot (8); correspondingly, a guide groove (48) is formed on the lock case (41) along its height direction.

6. The lock assembly according to claim 2, characterized in that: The limiting mechanism (7) comprises a limiting portion (70) in a stepped state, the limiting portion (70) being fixedly arranged on the lock seat (43) and located at the top of the through hole (47), a guiding limiting surface (64) matching the limiting portion (70) being formed on the lock shaft (60), and the limiting portion (70) abutting against the guiding limiting surface (64).

7. A gas meter battery cover structure, comprising a battery assembly (1) and a battery cover (2), wherein the battery assembly (1) is provided with an assembly portion (3), and the battery cover (2) is rotatably assembled on the battery assembly (1) for opening and closing the assembly portion (3); a receiving cavity (30) for accommodating a battery is formed in the assembly portion (3), and the assembly portion (3) and the battery cover (2) are locked by a locking device (4); the locking device (4) comprises a locking assembly (40) and a locking plate (9); wherein: The locking assembly (40) is the locking assembly described in any one of claims 1 to 6; the locking plate (9) is assembled on the battery cover (2), and the locking assembly (40) is fixed on the assembly part (3); the battery cover (2) and the assembly part (3) are detachably connected through the cooperation of the locking plate (9) and the locking assembly (40).

8. The gas meter battery cover structure according to claim 7, characterized in that: The assembly portion (3) is provided with an annular sealing groove (31), and a sealing ring (32) is mounted in the annular sealing groove (31). Correspondingly, a convex rib (24) is arranged circumferentially on the battery cover (2). When the battery cover (2) is assembled on the assembly portion (3), the convex rib (24) on the battery cover (2) abuts against and squeezes the sealing ring (32). An assembly groove (5) is formed between the annular sealing groove (31) and the battery assembly part (1), and the lock assembly (40) is built into the assembly groove (5).

9. The gas meter battery cover structure according to claim 7, characterized in that: A positioning plate (20) is fixedly provided on one side of the battery cover (2) close to the assembly portion (3), a groove (21) being formed on the positioning plate (20), the locking plate (9) being fitted in the groove (21) of the positioning plate (20), the top end of the locking plate (9) being on the same horizontal plane as the top end of the positioning plate (20); locking blocks (90) are formed on both sides of the top of the locking plate (9).

10. The gas meter battery cover structure according to claim 7, characterized in that: The battery assembly (1) is fixedly connected to two spaced connection brackets (10), a positioning groove (11) is formed in the middle of the connection bracket (10), a torsion spring (12) is installed in the positioning groove (11), and a connection block (22) adapted to the connection bracket (10) is fixedly connected to the lower part of the battery cover (2), a positioning column (23) is installed on the connection block (22), and the positioning column (23) passes through the connection block (22), the connection bracket (10) and the torsion spring (12) in sequence; and is used to assemble the battery cover (2) on the battery assembly (1); the surface of the battery cover (2) is provided with an opening indication mark (14) and an anti-slip protrusion (15); and the opening indication mark (14) and the anti-slip protrusion (15) are integrally formed with the battery cover (2).

Images