Screw anti-disassembly structure applied to large-caliber water meter
The inverted bolt structure solves the problem of easy removal of large-diameter water meter, and achieves the effect of anti-tamping and convenient maintenance, reducing the risk and maintenance costs of users for removing water meter.
Patent Information
- Application Number
- CN202422549459.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The bolt structure of the existing large-diameter water meter is easily removed by users, resulting in failure of the metering function and difficulty in repair. The existing anti-tamping structure increases the difficulty and cost of repair.
Bolts with an inverted structure, including an inverted base and an inverted cover, are designed with clearance and inverted bosses or protrusions to facilitate table removal operation and maintenance, and are difficult to remove by non-professional personnel.
The anti-tamping function of the water meter is realized, which facilitates the disassembly of the manufacturer and management department, reduces the possibility of users disassemblying the water meter, and reduces the difficulty and cost of repairs.
Smart Images
Figure CN223152525U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of large-caliber water meters, in particular to a screw anti-disassembly structure applied to large-caliber water meters. Background Art
[0002] For industrial large-caliber water meters, generally, hexagon socket head cap screws are used for connection and fastening between the flange cover and the water meter housing, and then one of the hexagon socket head cap screws is tied to the screw on the water meter head using a lead seal and lead seal wire, as Figure 1 . The water meter is installed on-site. When the water management department needs to disassemble the meter, repair or replace the internal fittings of the water meter, the lead seal wire can be cut short and the water meter can be directly disassembled for operation. The water meter is used to measure how much water users consume every day, month, and year, and how much water fee needs to be paid. Therefore, there may be a small number or a part of users who try to disassemble the meter in order to pay less water fee, so as to damage or affect the normal metering function of the water meter. The current method of bolt fastening plus lead sealing cannot play the role of anti-disassembly and anti-theft of water, and is very easy for users to operate. Moreover, the lead seal and lead seal wire are relatively easy to buy on the market. If there is a user's behavior of disassembling the meter, it is actually very difficult for the water management department to judge and identify.
[0003] To solve this problem, there is an anti-theft and anti-disassembly structure, as Figures 2 to 4 shown. First, install an anti-pry flange cover with bolt holes, then install hexagon socket head cap screws and tighten them, and finally drive in an anti-pry plug (metal). This can completely block the hexagon socket head cap screw holes and prevent later artificial opening and damage to the inside of the water meter. However, at the same time, it also brings inconvenience to the manufacturer itself and the water management department. When the manufacturer and the water management department need to disassemble the meter due to inaccurate metering performance of the water meter, movement replacement, and other reasons, it will cause difficulties and they can only destructively remove the anti-pry plug and anti-pry flange cover, and it is particularly difficult to remove, which brings difficulties to the manufacturer and the water management department and also increases additional costs. Therefore, this structural solution is used less and less in the market.
[0004] The existing solution uses standard hexagon socket head cap screws and a lead sealing structure to achieve anti-disassembly. Although it is simple and easy to operate, it is also relatively easy to disassemble the meter with water, and cannot achieve the purpose of anti-disassembly and protecting water use and normal metering of water fees. Another structure with an anti-pry cover and anti-pry plug can completely prevent malicious anti-disassembly, but it also increases the difficulty of after-sales maintenance for the water management department and the water meter manufacturer. It also takes time and cost to disassemble it by themselves. Content of the Utility Model
[0005] The purpose of the utility model is to provide a screw anti-disassembly structure applied to large-caliber water meters, which can facilitate the disassembly operation and maintenance of the water meter, and is beneficial to reducing the impact on the function of the water meter.
[0006] To achieve the above object, the technical solution of the present utility model provides an anti-disassembly structure for screws applied to a large-caliber water meter, including a bolt for connecting a water meter flange cover and a water meter housing. An inverted buckle base is sleeved outside the head of the bolt. The rod portion of the bolt passes through the bottom of the inverted buckle base. The inverted buckle base has an opening above the head of the bolt. An inverted buckle cover is sleeved on the head of the bolt, and the inverted buckle cover is located inside the inverted buckle base.
[0007] Preferably, a metal gasket is sleeved on the rod portion of the bolt, and the metal gasket is located between the head of the bolt and the water meter flange cover.
[0008] Preferably, the bottom of the inverted buckle base is located between the head of the bolt and the metal gasket.
[0009] Preferably, the inverted buckle cover can be pressed into the inside of the inverted buckle base through the opening at the top of the inverted buckle base.
[0010] Preferably, there is a gap between the inverted buckle cover and the inverted buckle base.
[0011] Preferably, there is a gap between the inverted buckle cover and the bolt.
[0012] Preferably, the side surface of the inverted buckle cover is provided with an inverted buckle boss or protrusion.
[0013] Preferably, the inverted buckle boss or protrusion can adopt a triangular boss, an arc boss, a spring protrusion or a rib protrusion.
[0014] Preferably, the bolt adopts an internal hexagonal bolt.
[0015] In summary, the present utility model includes the following beneficial technical effects:
[0016] The present utility model adopts an inverted structure to add two protective parts, namely an inverted buckle cover and an inverted buckle base. After being buckled, on the one hand, it does not affect the use, and on the other hand, the overall appearance is beautiful. In actual application, manufacturers and water management departments are familiar with its structure and operation method, so it is convenient for meter disassembly operation and water meter repair and maintenance, and can be operated repeatedly for many times without any impact on the water meter function. For users, because they do not understand its structure and do not have such special anti-disassembly accessories, they do not know how to disassemble it. Even if the water meter is disassembled, it is difficult to find suitable anti-disassembly accessories on the market. When the water management department conducts on-site inspections and meter readings, it can be clearly seen at a glance that the water meter has been disassembled by the user. Description of the Drawings
[0017] Figure 1 It is a schematic diagram of the connection and fastening method of an industrial large-caliber water meter in the prior art;
[0018] Figure 2 Schematic diagram of the anti-theft and anti-disassembly structure of industrial large-caliber water meters in the prior art Figure 1 ;
[0019] Figure 3 Schematic diagram of the anti-theft and anti-disassembly structure of industrial large-caliber water meters in the prior art Figure 2 ;
[0020] Figure 4 Schematic diagram of the anti-theft and anti-disassembly structure of industrial large-caliber water meters in the prior art Figure 3 ;
[0021] Figure 5 The utility model is a structural schematic diagram of a screw anti-disassembly structure applied to a large-diameter water meter.
[0022] Figure numerals: 1. hexagon socket bolt; 2. inverted cover; 3. inverted base; 4. metal gasket; 5. water meter flange cover; 6. water meter housing; 7. inverted boss or protrusion. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] The utility model proposes a special anti-disassembly structure for connecting screws on industrial large-caliber water meters, that is, an undercut structure is added based on the existing screw structure to achieve the purpose of anti-disassembly. Figure 3 The utility model includes a hexagon socket bolt 1 for connecting a water meter flange cover 5 and a water meter housing 6. An inverted base 3 is sleeved on the outer side of the head of the hexagon socket bolt 1. The stem of the hexagon socket bolt 1 passes through the bottom of the inverted base 3. The inverted base 3 is provided with an opening above the head of the hexagon socket bolt 1. An inverted cover 2 is sleeved on the head of the hexagon socket bolt 1. The inverted cover 2 is located on the inner side of the inverted base 3.
[0025] The rod of the hexagon socket bolt 1 is sleeved with a metal gasket 4, which is located between the head of the hexagon socket bolt 1 and the water meter flange cover 5. The bottom of the inverted base 3 is located between the head of the hexagon socket bolt 1 and the metal gasket 4. A gap is provided between the inverted cover 2 and the inverted base 3. A gap is provided between the inverted cover 2 and the hexagon socket bolt 1. The inverted cover 2 can be pressed into the inner side of the inverted base 3 through the opening at the top of the inverted base 3. The side of the inverted cover 2 is provided with an inverted boss or protrusion 7, which can be a triangular boss, an arc boss, a spring protrusion or a rib protrusion.
[0026] The utility model can fasten and connect the water meter flange cover 5 and the water meter housing 6 by using the hexagon socket head cap screw 1 and the metal gasket 4. At the same time, the reverse buckle base 3 and the reverse buckle cover 2 are added and assembled under the head of the hexagon socket head cap screw 1. After the reverse buckle cover 2 is pressed into the reverse buckle base 3, a certain clearance is designed between the two parts. There is also a clearance design between the reverse buckle cover 2 and the hexagon socket head cap screw 1. The purpose of the clearance design is to facilitate the extrusion deformation of the reverse buckle cover 2 and the reverse buckle base 3 when an external tool applies pressure, the clearance becomes larger, and then an external tool is used to forcefully pry off the reverse buckle cover 2, and then the hexagon socket head cap screw 1 is unscrewed.
[0027] The implementation principle of the utility model is as follows:
[0028] 1) First, the reverse buckle base 3 is assembled on the hexagon socket head cap screw 1, and then the metal gasket 4 is assembled;
[0029] 2) The water meter flange cover 5 and the water meter housing 6 are connected and fastened with the hexagon socket head cap screw 1;
[0030] 3) The reverse buckle cover 2 is pressed in with external force and assembled in place;
[0031] 4) When disassembly is required, an external tool is used to act on the side of the reverse buckle base 3 for extrusion, the reverse buckle base 3 deforms, and the clearance with the reverse buckle cover 2 increases;
[0032] 5) Use an external tool such as a screwdriver to insert into the gap between the reverse buckle base 3 and the reverse buckle cover 2 and pry outwards, and the reverse buckle cover 2 can be loosened and easily pried off.
[0033] Compared with the prior art, the solution of the utility model is to add the reverse buckle cover 2 and the reverse buckle base 3. Before the water meter flange cover 5 and the water meter housing 6 are fastened, the hexagon socket head cap screw 1, the reverse buckle base 3 and the metal gasket 4 are first assembled, and finally the reverse buckle cover 2 is pressed in. In addition to the clearance design between the reverse buckle cover 2 and the reverse buckle base 3, a reverse buckle structure (reverse buckle boss or protrusion 7) is also designed to prevent the reverse buckle cover 2 from falling off after being inserted into the reverse buckle base 3. The form of the reverse buckle structure is not limited, such as triangular boss, arc boss, spring protrusion, rib protrusion, etc.
[0034] In the utility model, the combination of the reverse buckle cover 2, the reverse buckle base 3 and the hexagon socket head cap screw 1 can play an anti-disassembly role; a reasonable clearance should be maintained between the reverse buckle cover 2 and the reverse buckle base 3, and between the reverse buckle cover 2 and the hexagon socket head cap screw 1 to facilitate the insertion and prying of the external tool to pry off the reverse buckle cover 2; when the reverse buckle cover 2 is pressed into the reverse buckle base 3, it will not fall off, and a reverse buckle boss or protrusion 7 is designed on the side of the reverse buckle cover 2, and the reverse buckle cover 2 can be pressed into the reverse buckle base 3 from the outside; this reverse buckle structure is applied to large-diameter water meters and industrial water meters to achieve the purpose of preventing the water meter from being disassembled.
[0035] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A screw anti-removal structure applied to a large-caliber water meter, characterized in that, It includes bolts for connecting a water meter flange cover (5) and a water meter housing (6). An inverted buckle base (3) is sleeved outside the head of the bolt. The rod part of the bolt penetrates through the bottom of the inverted buckle base (3). The inverted buckle base (3) has an opening above the head of the bolt. An inverted buckle cover (2) is sleeved on the head of the bolt, and the inverted buckle cover (2) is located inside the inverted buckle base (3).
2. The anti-loosening structure of the screw applied to the large-caliber water meter according to claim 1, characterized in that A metal gasket (4) is sleeved on the rod part of the bolt, and the metal gasket (4) is located between the head of the bolt and the water meter flange cover (5).
3. The anti-disassembly structure of the screw applied to the large-caliber water meter according to claim 2, characterized in that, The bottom of the inverted buckle base (3) is located between the head of the bolt and the metal gasket (4).
4. The screw anti-removal structure applied to a large-caliber water meter according to claim 1, characterized in that, The inverted buckle cover (2) can be pressed into the inside of the inverted buckle base (3) through the opening at the top of the inverted buckle base (3).
5. The anti-disassembly structure of the screw applied to the large-caliber water meter according to claim 4, characterized in that, A gap is provided between the inverted buckle cover (2) and the inverted buckle base (3).
6. The anti-loosening structure of the screw applied to the large-caliber water meter according to claim 5, characterized in that, A gap is provided between the inverted buckle cover (2) and the bolt.
7. The anti-loosening structure of the screw applied to the large-caliber water meter according to claim 1, characterized in that, The side surface of the inverted buckle cover (2) is provided with an inverted buckle boss or protrusion (7).
8. The anti-disassembly structure of the screw applied to the large-caliber water meter according to claim 7, characterized in that The inverted buckle boss or protrusion (7) can be a triangular boss, an arc boss, a spring protrusion or a rib protrusion.
9. The anti-disassembly structure of the screw applied to the large-caliber water meter according to claim 1, characterized in that, The bolt is an internal hexagon bolt (1).