Gauge head top cover mounting structure with lead sealing function

Abstract

The utility model relates to the technical field of water meters, in particular to a meter head top cover mounting structure with a lead sealing function, which comprises a base shell, an upper cover mounted on the upper part of the base shell to seal an opening in the upper part of the base shell, and a top cover body sleeved on the base shell and fixedly pressed on the upper cover, the outer wall of the base shell protrudes and is fixedly connected with a clamping protruding part, and an elastic hook is arranged on the inner wall of the top cover body and comprises a deformation arm fixedly connected to the inner wall of the top cover body and a clamping block fixedly connected to the outer wall of the lower end of the deformation arm. The outer wall of the upper part of the clamping convex part is provided with a first guide surface which is obliquely arranged for the clamping block to abut against so as to force the deformation arm to elastically deform; and after the deformation arm is elastically reset, the upper end surface of the clamping block abuts against the lower end surface of the clamping convex part. The method has the effect of improving the assembly efficiency of the gauge outfit.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of water meters, in particular to a meter head top cover mounting structure with a lead seal function. BACKGROUND

[0002] A water meter is an instrument for measuring water flow, and is mostly used for measuring cumulative water flow. The water meter records the water consumption of a user within a certain period of time, and is an important tool for water supply management and cost settlement.

[0003] A meter head in the prior art comprises a base shell provided with an opening at an upper portion and mounted on a meter body, an upper cover mounted on the upper portion of the base shell to close the upper portion of the base shell, and a top cover sleeved on the base shell and pressed on the upper cover, the base shell is internally provided with a counter for recording water flow through the meter body, and the base shell is assembled with a metering support of the meter body. After the existing top cover and base shell are assembled, lead seals are mounted on the left and right sides of the top cover to fix the top cover and the base shell. If the top cover needs to be removed, two lead seals need to be broken by using a screwdriver, thereby achieving the lead seal function. However, the existing top cover needs to be additionally provided with lead seals after assembly, which increases the mounting steps and reduces the overall assembly efficiency of the meter head, and therefore further improvement is needed. CONTENT OF THE UTILITY MODEL

[0004] In order to improve the assembly efficiency of the meter head, the application provides a meter head top cover mounting structure with a lead seal function.

[0005] The meter head top cover mounting structure with the lead seal function provided by the application adopts the following technical scheme:

[0006] The meter head top cover mounting structure with the lead seal function comprises a base shell, an upper cover mounted on an upper portion of the base shell to close an upper portion opening of the base shell, and a top cover body sleeved on the base shell and pressed on the upper cover, an outer wall of the base shell is fixedly connected with a clamping protrusion, an inner wall of the top cover body is provided with an elastic hook, the elastic hook comprises a deformation arm fixedly connected with the inner wall of the top cover body and a clamping block fixedly connected with an outer wall of a lower end of the deformation arm, an upper portion outer wall of the clamping protrusion is provided with a first guide surface obliquely arranged to abut against the clamping block so as to force the deformation arm to elastically deform, and an upper end surface of the clamping block abuts against a lower end surface of the clamping protrusion after the deformation arm elastically returns.

[0007] By adopting the technical scheme, the clamping convex part fixed on the outer wall of the base shell cooperates with the elastic hook arranged on the inner wall of the top cover body, in the process of installing the top cover body, the first guide surface of the clamping block abuts against the first guide surface of the clamping convex part, so that the elastic deformation arm is forced to elastically deform, thereby the clamping block smoothly passes through the clamping convex part. When the top cover body is installed in place, the elastic deformation arm is elastically reset, the upper end surface of the clamping block abuts against the lower end surface of the clamping convex part, a stable anti-disengagement connection is formed, and the lead sealing function is realized. The lead sealing function can be realized without additionally installing a lead sealing piece, the assembly steps are effectively reduced, and the overall assembly efficiency of the meter head is improved.

[0008] Preferably, the lower part of the clamping block close to the axis side wall of the base shell has a second guide surface for the first guide surface to abut against to force the elastic deformation arm to elastically deform.

[0009] By adopting the technical scheme, the second guide surface is additionally arranged on the lower part of the clamping block close to the axis side wall of the base shell, in the process of sleeving the top cover body on the base shell, when the clamping convex part approaches the clamping block, the second guide surface can be in contact with the first guide surface, thereby the elastic deformation arm is more smoothly forced to elastically deform, the resistance in the assembly process is effectively reduced, the assembly fluency is improved, and the clamping block is ensured to smoothly pass through the clamping convex part and finally realize reliable clamping cooperation.

[0010] Preferably, the clamping convex part is arranged on the upper end outer wall of the base shell, and the elastic hook is arranged on the upper inner wall of the top cover body.

[0011] By adopting the technical scheme, the elastic hook is arranged on the upper inner wall of the top cover body, the possibility of being artificially moved is reduced, and the lead sealing stability is improved.

[0012] Preferably, the lower end surface edge of the upper cover is surrounded and provided with a positioning ring groove, and the upper end surface of the base shell is surrounded and protrudes to be fixed with a positioning ring convex which is inserted into the positioning ring groove.

[0013] By adopting the technical scheme, the cooperation of the positioning ring groove and the positioning ring convex can ensure that the upper cover is accurately installed on the base shell, avoid assembly problems caused by position deviation, improve the assembly efficiency, enhance the stability of the entire meter head structure, and reduce the risk of loosening or misalignment in the subsequent use process.

[0014] Preferably, the top inner wall of the top cover body has a sunken groove, and the upper part of the upper cover is embedded in the sunken groove.

[0015] By adopting the technical scheme, the sunken groove is arranged on the top inner wall of the top cover body, so that the upper part of the upper cover can be embedded in the sunken groove, and the cooperation stability between the top cover body and the upper cover is enhanced.

[0016] Preferably, the top wall of the top cover body is provided with a window.

[0017] By adopting the above technical solution, a viewing window is opened on the top wall of the top cover body, which makes it easy to observe the counter reading.

[0018] Preferably, the upper inner peripheral wall of the base shell is provided with a snap-fit ​​ring groove, the lower end face of the upper cover protrudes and is fixedly fitted with a snap-fit ​​ring that is inserted into the inner cavity of the base shell, and the outer peripheral wall of the snap-fit ​​ring protrudes and is fixedly connected with a snap-fit ​​protrusion that is snapped into the snap-fit ​​ring groove.

[0019] By adopting the above technical solution, the engagement of the snap-fit ​​groove and the snap-fit ​​protrusion can ensure that the top cover is accurately inserted into the inner cavity of the base shell and is reliably fixed through the snap-fit ​​method.

[0020] In summary, this utility model has the following beneficial effects:

[0021] 1. The snap-fit ​​protrusion fixed to the outer wall of the base shell cooperates with the elastic hook set on the inner wall of the top cover body. During the installation of the top cover body, the snap-fit ​​block abuts against the first guide surface of the snap-fit ​​protrusion, forcing the deformation arm to undergo elastic deformation, thereby allowing the snap-fit ​​block to smoothly pass over the snap-fit ​​protrusion. After the top cover body is installed in place, the deformation arm elastically returns to its original position, and the upper end face of the snap-fit ​​block abuts against the lower end face of the snap-fit ​​protrusion, forming a stable anti-detachment connection and realizing the lead seal function. The lead seal function can be realized without the need for additional lead seal parts, effectively reducing assembly steps and improving the overall assembly efficiency of the meter head;

[0022] 2. The matching design of the positioning ring groove and the positioning ring protrusion ensures that the top cover is accurately installed on the base shell, avoiding assembly problems caused by positional misalignment. This not only improves assembly efficiency but also enhances the stability of the entire meter structure, reducing the risk of loosening or misalignment that may occur during subsequent use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a meter head top cover mounting structure with lead seal function;

[0024] Figure 2 yes Figure 1 A magnified view of a portion at point A.

[0025] In the figure, 1. Base shell; 11. Positioning ring protrusion; 12. Snap ring groove; 13. Snap protrusion; 14. First guide surface; 2. Top cover; 21. Positioning ring groove; 22. Insertion ring; 23. Snap protrusion; 3. Top cover body; 31. Viewing window; 32. Recessed groove; 4. Elastic hook; 41. Deformation arm; 42. Snap block; 43. Second guide surface. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-2 This application will be described in further detail.

[0027] This application discloses a meter head cover mounting structure with lead seal function, referring to... Figure 1 It includes a base shell 1, an upper cover 2 installed on the upper part of the base shell 1 to close the upper opening of the base shell 1, and a top cover body 3 sleeved on the base shell 1 and pressed against the upper cover 2.

[0028] Reference Figure 1 , Figure 2 The lower edge of the upper cover 2 is provided with a positioning ring groove 21. The upper surface of the base shell 1 is provided with a positioning ring protrusion 11 that is inserted into the positioning ring groove 21. The positioning ring protrusion 11 and the base shell 1 are integrally formed. The upper inner peripheral wall of the base shell 1 is provided with a snap-fit ​​ring groove 12. The lower edge of the upper cover 2 is provided with a snap-fit ​​ring 22 that is inserted into the inner cavity of the base shell 1. The snap-fit ​​ring 22 and the upper cover 2 are integrally formed. The outer peripheral wall of the snap-fit ​​ring 22 is provided with a snap-fit ​​protrusion 23 that is snapped into the snap-fit ​​ring groove 12. After the snap-fit ​​ring 22 is inserted into the upper inner cavity of the base shell 1, the snap-fit ​​protrusion 23 is snapped into the snap-fit ​​ring groove 12, and the contact point between the upper cover 2 and the base shell 1 is fixed by ultrasonic welding. The outer peripheral wall of the upper cover 2 is provided with an anti-rotation groove (not shown in the figure) along the axial direction. The upper end of the anti-rotation groove extends to the upper end face of the upper cover 2, and the lower end of the anti-rotation groove extends to the middle outer peripheral wall of the base shell 1.

[0029] A viewing window 31 is provided through the top wall of the top cover body 3, which facilitates observation of the water meter flow reading. A recessed groove 32 is provided on the inner top wall of the top cover body 3, allowing the upper part of the upper cover 2 to be embedded in the recessed groove 32, thereby enhancing the stability of the fit between the top cover body 3 and the upper cover 2. An anti-rotation block protrudes and is fixedly inserted into the anti-rotation groove on the inner peripheral wall of the top cover body 3, thereby restricting the relative rotation of the top cover body 3, the upper cover 2, and the base shell 1.

[0030] The upper outer wall of the base shell 1 has an integrally protruding snap-fit ​​protrusion 13. The inner wall of the top cover body 3 is provided with an elastic hook 4. The elastic hook 4 includes a vertically arranged deformation arm 41 with its upper end fixedly connected to the top inner wall of the top cover body 3, and an integrally protruding snap-fit ​​block 42 fixedly connected to the lower end of the deformation arm 41. The deformation arm 41 and the top cover body 3 are integrally formed. The deformation arm 41 is located on one side of the snap-fit ​​protrusion 13, and the snap-fit ​​block 42 is normally facing the snap-fit ​​protrusion 13. The upper outer wall of the snap-fit ​​protrusion 13 has a first guide surface 14 that is inclined so that the snap-fit ​​block 42 abuts against it, thereby forcing it to elastically deform towards the deformation arm 41. The lower part of the snap-fit ​​block 42 near the axial side wall of the base shell 1 has a second guide surface 43 that abuts against the first guide surface 14, thereby forcing the deformation arm 41 to elastically deform. After the deformation arm 41 elastically resets, the upper end face of the snap-fit ​​block 42 abuts against the lower end face of the snap-fit ​​protrusion 13.

[0031] The implementation principle of the meter head top cover mounting structure with lead seal function in this application embodiment is as follows: During the process of fitting the top cover body 3 onto the base shell 1, the second guide surface 43 of the snap-fit ​​block 42 abuts against the first guide surface 14 of the snap-fit ​​protrusion 13, forcing the lower end of the deformation arm 41 to undergo elastic deformation, causing the snap-fit ​​block 42 to swing away from the snap-fit ​​protrusion 13, so that the snap-fit ​​block 42 can smoothly pass over the snap-fit ​​protrusion 13. When the top cover body 3 continues to slide into place, the deformation arm 41 elastically resets, and the upper end surface of the snap-fit ​​block 42 abuts against the lower end surface of the snap-fit ​​protrusion 13, forming a stable anti-detachment connection, realizing the lead seal function. The lead seal function can be realized without the need to install additional lead seal parts, effectively reducing assembly steps and improving the overall assembly efficiency of the meter head.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A meter head top cover mounting structure with lead seal function, characterized in that: The device includes a base shell (1), an upper cover (2) installed on the upper part of the base shell (1) to close the upper opening of the base shell (1), and a top cover body (3) fitted on the base shell (1) and pressed against the upper cover (2). The outer wall of the base shell (1) is fixedly connected with a snap-fit ​​protrusion (13). The inner wall of the top cover body (3) is provided with an elastic hook (4). The elastic hook (4) includes a deformable arm (41) fixedly connected to the inner wall of the top cover body (3) and a snap-fit ​​block (42) fixedly connected to the lower outer wall of the deformable arm (41). The upper outer wall of the snap-fit ​​protrusion (13) has a first guide surface (14) that is inclined so that the snap-fit ​​block (42) abuts against it, thereby forcing the deformable arm (41) to undergo elastic deformation. After the deformable arm (41) is elastically reset, the upper end face of the snap-fit ​​block (42) abuts against the lower end face of the snap-fit ​​protrusion (13).

2. The meter head top cover mounting structure with lead seal function according to claim 1, characterized in that: The snap-fit ​​block (42) has a second guide surface (43) on the lower part of the side wall near the axis of the base shell (1) for the first guide surface (14) to abut against in order to force the deformable arm (41) to undergo elastic deformation.

3. The meter head top cover mounting structure with lead seal function according to claim 1, characterized in that: The snap-fit ​​protrusion (13) is located on the upper outer wall of the base shell (1), and the elastic hook (4) is located on the upper inner wall of the top cover body (3).

4. The meter head top cover mounting structure with lead seal function according to claim 1, characterized in that: The lower end face edge of the upper cover (2) is provided with a positioning ring groove (21), and the upper end face of the base shell (1) is provided with a positioning ring protrusion (11) inserted into the positioning ring groove (21).

5. The meter head top cover mounting structure with lead seal function according to claim 1, characterized in that: The top inner wall of the top cover body (3) has a groove (32), and the upper part of the top cover (2) is embedded in the groove (32).

6. The meter head top cover mounting structure with lead seal function according to claim 1, characterized in that: The top wall of the top cover body (3) is provided with a viewing window (31).

7. The meter head top cover mounting structure with lead seal function according to claim 1, characterized in that: The upper inner peripheral wall of the base shell (1) is provided with a snap ring groove (12), and the lower end face of the upper cover (2) is provided with a snap ring (22) that is inserted into the inner cavity of the base shell (1). The outer peripheral wall of the snap ring (22) is provided with a snap protrusion (23) that is snapped into the snap ring groove (12).

Images