A sealing ring fixing structure for a word wheel bin of a water meter core

Abstract

The utility model discloses a kind of water meter core word wheel storehouse sealing ring fixed structure, belong to liquid seal word wheel box sealing technical field, including clamping plate seat and the word wheel box of being installed on clamping plate seat, the word wheel shaft is worn out in the word wheel box front end face, the sealing ring for sealing gap is sleeved on the word wheel shaft, the limit plate with limit sealing ring separation is equipped on the clamping plate seat. Limit plate is integrally formed, when word wheel box is installed on clamping plate seat, limit plate also completes installation, both reduce step and facilitate the installation of limit plate.

Description

Technical Field

[0001] This utility model relates to the field of liquid-sealed digit wheel box sealing technology, and in particular to a sealing ring fixing structure for the digit wheel chamber of a water meter movement. Background Technology

[0002] Existing water meter mechanisms typically include a gearbox, gear assembly, clamping plate assembly, and liquid-sealed digit wheel box assembly. The liquid-sealed digit wheel box assembly contains a liquid-sealed digit wheel box, digit wheel, digit wheel shaft, toothed wheel, sealing ring, and transmission gear.

[0003] There is a gap between the type wheel box and the type wheel shaft, so a sealing ring is needed to seal it. Due to pressure, the sealing ring will move axially and cannot achieve a seal. To solve this problem, the existing technology has a limit slot on the type wheel box. A baffle is inserted into the limit slot to prevent the sealing ring from moving axially. Although the baffle prevents the sealing ring from moving, it adds an extra step of installing the baffle, and the baffle itself is small and inconvenient to install. Utility Model Content

[0004] The purpose of this invention is to solve the problem mentioned in the background art that although the baffle blocks the movement of the sealing ring, it adds an extra step of installing the baffle, and the baffle itself is small and inconvenient to install.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A water meter movement digit wheel chamber sealing ring fixing structure includes a clamping plate seat and a digit wheel box mounted on the clamping plate seat. A digit wheel shaft protrudes from the front end face of the digit wheel box, and a sealing ring for sealing the gap is sleeved on the digit wheel shaft. The clamping plate seat has a limiting plate to limit the detachment of the sealing ring.

[0006] Preferably, the character wheel shaft has a step around it, and a circular sealing groove is formed in the step. The center of the character wheel shaft coincides with the center of the circular sealing groove, and the sealing ring is embedded in the circular sealing groove.

[0007] Preferably, the limiting plate has a limiting groove on the side facing the sealing ring, and the limiting groove and the step are used for entry.

[0008] Preferably, the limiting plate has a through groove that connects to the limiting groove, and the through groove is used for the character wheel shaft to enter.

[0009] Preferably, the front end face of the character wheel box has a forward-extending protrusion, and an installation groove for the limiting plate to enter is formed between the protrusion and the step.

[0010] Preferably, the clamping plate base has a groove for mounting the type wheel box.

[0011] Preferably, a carry wheel is fixed on the character wheel shaft.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The upper opening of the limiting groove allows the step to enter, and the upper opening of the through groove allows the character wheel shaft to enter. During assembly, no complicated alignment is required. The character wheel shaft, sealing ring and limiting plate can be matched directly by dropping, reducing assembly steps. The limiting plate is integrally molded. When the letter wheel box is installed on the clamping plate seat, the limiting plate is also installed, which reduces the number of steps and facilitates the installation of the limiting plate. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram showing the separation of the character wheel box and the clamping plate seat of this utility model.

[0016] Figure 3 This is a schematic diagram of the limiting plate structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the mounting groove and step of this utility model.

[0018] Drawing number descriptions: 1. Clamping plate seat; 11. Groove; 2. Type wheel box; 21. Shaft hole; 22. Step; 23. Circular sealing groove; 24. Protrusion; 25. Mounting groove; 3. Type wheel shaft; 4. Input wheel; 5. Sealing ring; 6. Limiting plate; 61. Limiting groove; 62. Through groove. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0022] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0023] Please see Figures 1-4 A sealing ring fixing structure for the digit wheel chamber of a water meter movement includes a clamping plate 1 and a digit wheel box 2 mounted on the clamping plate 1. The clamping plate 1 has a groove 11 for mounting the digit wheel box 2. The bottom of the digit wheel box 2 can be directly inserted into the groove 11 from top to bottom. A digit wheel shaft 3 protrudes from the front end face of the digit wheel box 2, and a shaft hole 21 is formed on the front end face of the digit wheel box 2. The digit wheel shaft 3 passes through the shaft hole 21 and can rotate within the shaft hole 21. Therefore, a small gap is formed between the digit wheel shaft 3 and the shaft hole 21, preventing the hole wall of the shaft hole 21 from interfering with the rotation of the digit wheel shaft 3. An advance wheel 4 is fixed on the digit wheel shaft 3, which drives the advance wheel 4 to rotate when the digit wheel shaft 3 rotates.

[0024] A sealing ring 5 for sealing the gap is fitted on the character wheel shaft 3, and a limiting plate 6 on the clamping plate seat 1 to prevent the sealing ring 5 from disengaging. The limiting plate 6 is integrally formed with the clamping plate seat 1. The character wheel shaft 3 has a step 22 around its perimeter, and a circular sealing groove 23 is formed within the step 22. The center of the character wheel shaft 3 coincides with the center of the circular sealing groove 23, and the sealing ring 5 is embedded in the circular sealing groove 23. The axial thickness of the sealing ring 5 is less than the depth of the circular sealing groove 23, so that the entire sealing ring 5 can be embedded in the circular sealing groove 23.

[0025] The front end face of the character wheel box 2 has a forward-extending protrusion 24. The protrusion 24 and the step 22 form an installation groove 25 for the limiting plate 6 to enter. During the falling process of the character wheel box 2, the limiting plate 6 enters the installation groove 25. The limiting plate 6 prevents the sealing ring 5 from disengaging from the circular sealing groove 23 by entering the installation groove 25.

[0026] A limiting groove 61 is provided on the side of the limiting plate 6 facing the sealing ring 5. The limiting groove 61 and the step 22 are used for entry. The upper side of the limiting groove 61 is open for the entry of the step 22. The limiting plate 6 has a through groove 62 that connects to the limiting groove 61. The upper side of the through groove 62 is also open, and the through groove 62 is used for the entry of the character wheel shaft 3. The limiting plate 6 is designed to be installed on the clamping plate seat 1. When the character wheel box 2 is installed on the clamping plate seat 1, the limiting plate 6 is also installed, which reduces the steps and facilitates the installation.

[0027] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A sealing ring fixing structure for the water meter movement's dial housing, characterized in that, It includes a clamping plate seat (1) and a character wheel box (2) mounted on the clamping plate seat (1). A character wheel shaft (3) extends through the front end face of the character wheel box (2). A sealing ring (5) for sealing the gap is sleeved on the character wheel shaft (3). The clamping plate seat (1) has a limiting plate (6) for limiting the release of the sealing ring (5).

2. The water meter movement dial wheel chamber sealing ring fixing structure according to claim 1, characterized in that: The character wheel shaft (3) has a step (22) around it, and a circular sealing groove (23) is formed in the step (22). The center of the character wheel shaft (3) coincides with the center of the circular sealing groove (23), and the sealing ring (5) is embedded in the circular sealing groove (23).

3. The water meter movement dial wheel chamber sealing ring fixing structure according to claim 1, characterized in that: The limiting plate (6) has a limiting groove (61) on one side facing the sealing ring (5), and the limiting groove (61) is used for the step (22) to enter.

4. The water meter movement dial wheel chamber sealing ring fixing structure according to claim 3, characterized in that: The limiting plate (6) has a through groove (62) that connects to the limiting groove (61), and the through groove (62) is used for the character wheel shaft (3) to enter.

5. The water meter movement dial wheel chamber sealing ring fixing structure according to claim 1, characterized in that: The front end face of the character wheel box (2) has a forward-extending protrusion (24), and an installation groove (25) for the limiting plate (6) to enter is formed between the protrusion (24) and the step (22).

6. The water meter movement dial wheel chamber sealing ring fixing structure according to claim 1, characterized in that: The clamping plate seat (1) has a groove (11) for installing the character wheel box (2).

7. The water meter movement dial wheel chamber sealing ring fixing structure according to claim 1, characterized in that: The input wheel (4) is fixed on the input wheel shaft (3).

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