Internal tooth type counter transmission structure

Abstract

The utility model relates to an internal tooth type counter transmission structure. The transmission structure comprises a counter upper clamping plate and a counter lower clamping plate which are connected together in a clamped mode. A character wheel shaft is arranged in the counter upper clamping plate; a plurality of middle character wheels with the same size are sleeved on the character wheel shaft; the character wheel shaft is further sleeved with a plurality of dial wheel supports, and each dial wheel support is connected between the two middle character wheels in a sleeved mode and is shielded and hidden by the middle character wheels on the two sides. The dial wheel support is provided with dial wheels meshed with the middle character wheels on the two sides respectively. The rightmost side of the character wheel shaft is sleeved with a first transmission character wheel; a gear set is arranged on the counter lower clamping plate; and one side of the first transmission character wheel is in meshed connection with the rightmost middle character wheel, and the other side of the first transmission character wheel is in meshed connection with the gear set. Compared with the prior art, the utility model has the advantages of beautiful appearance, high transmission efficiency, small transmission gap, more stable transmission, reduced reading error and the like.

Description

Technical Field

[0001] This utility model relates to a counter transmission structure, and more particularly to an internal gear counter transmission structure. Background Technology

[0002] In a water meter, the digit wheels are supported and fixed together by a digit wheel shaft. Their meshing gears often protrude from the display surface of the digit wheels. The dial wheel is fixed to the outside of the digit wheels by another digit wheel shaft and meshes with the gears on the digit wheels themselves. When the turbine rotates, the first digit wheel is driven to rotate. After rotating 360 degrees, it drives the first-position middle digit wheel to rotate 36 degrees via the dial wheel. This cycle continuously advances the digit wheels to display the cumulative water volume of the water meter.

[0003] However, because the meshing gears of this type of character wheel transmission structure protrude from the character wheel display surface, there will be a relatively large gap between the character wheels, which will lead to unstable transmission and cause a relatively large reading error over time. Utility Model Content

[0004] The purpose of this invention is to overcome the defects of the existing technology and provide an internal gear counter transmission structure.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] An internal gear counter transmission structure includes an upper counter clamp and a lower counter clamp connected together. A digit wheel shaft is disposed within the upper counter clamp. Multiple intermediate digit wheels of the same size are sleeved on the digit wheel shaft. Multiple dial wheel supports are also sleeved on the digit wheel shaft, each dial wheel support being sleeved between two intermediate digit wheels and concealed by the intermediate digit wheels on both sides. Each dial wheel support is provided with dial wheels that mesh with the intermediate digit wheels on both sides. A first-position drive digit wheel is sleeved on the rightmost side of the digit wheel shaft. A gear set is disposed on the lower counter clamp. One side of the first-position drive digit wheel meshes with the rightmost intermediate digit wheel, and the other side meshes with the gear set.

[0007] Furthermore, the gear set includes gears K506, K505, and K507, all connected to the lower clamp of the counter; gear K507 meshes with gear K506; gear K506 meshes with gear K505; and gear K505 meshes with the first drive wheel.

[0008] Furthermore, both ends of the character wheel shaft are fitted with bushings for fixing the character wheel shaft and adjusting the gap of the intermediate character wheel.

[0009] Furthermore, the bushing is made of 304 stainless steel.

[0010] Furthermore, the counter's upper clamp is covered with a counter panel; a counting window is provided above the counter panel; and the middle digit wheel is located just below the counting window.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] This invention uses a dial bracket to hide the dial wheel inside the middle character wheel, which greatly reduces the gap between every two middle character wheels. Furthermore, the engagement of the dial wheel with the middle character wheels on both sides enables transmission between each level of character wheels, reducing transmission gap, improving transmission efficiency, making transmission smoother, and reducing reading errors. Moreover, since the dial wheel and dial bracket are hidden, only the middle character wheels that fit together are visible from the outside, making the appearance more aesthetically pleasing. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of this utility model;

[0014] Figure 2 An exploded view of the transmission structure provided by this utility model.

[0015] The labels in the diagram indicate:

[0016] 1. Counter panel; 2. Upper counter clamp; 3. Middle digit wheel; 4. First and second drive digit wheel; 5. Dial wheel bracket; 6. Dial wheel; 7. Bushing; 8. Dial wheel shaft; 9. K506 gear; 10. K505 gear; 11. K507 gear; 12. Lower counter clamp; 13. Counting window. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] Example

[0024] like Figure 1 and 2As shown, an internal gear counter transmission structure includes an upper counter clamping plate 2 and a lower counter clamping plate 12 that are engaged together. The upper counter clamping plate 2 and the lower counter clamping plate 12 are detachable for easy assembly, maintenance, and replacement of internal components. A digit wheel shaft 8 is provided inside the upper counter clamping plate 2. Multiple intermediate digit wheels 3 of the same size are sleeved on the digit wheel shaft 8. The intermediate digit wheels 3 have a circle of numbers 0-9 evenly distributed on them, with an angular interval of 36 degrees between each number. Multiple dial wheel brackets 5 are also sleeved on the digit wheel shaft 8, and each dial wheel bracket 5... All are fitted between two intermediate character wheels 3 and are concealed by the intermediate character wheels 3 on both sides; the dial wheel bracket 5 is provided with dial wheels 6 that mesh with the intermediate character wheels 3 on both sides to realize the transmission between each level of intermediate character wheels 3; the rightmost side of the character wheel shaft 8 is fitted with the first-position transmission character wheel 4; the lower clamp plate 12 of the counter is provided with a gear set; one side of the first-position transmission character wheel 4 is meshed with the rightmost intermediate character wheel 3, and the other side is meshed with the gear set; both ends of the character wheel shaft 8 are fitted with bushings 7 made of 304 stainless steel for fixing the character wheel shaft 8 and adjusting the gap of the intermediate character wheels 3.

[0025] The gear set includes gears K506 9, K505 10, and K507 11, all connected to the lower clamp plate 12 of the counter; gear K507 11 is meshed with gear K506 9; gear K506 9 is meshed with gear K505 10; and gear K505 10 is meshed with the first drive wheel 4.

[0026] To protect the internal structure and facilitate viewing the digits on the counter, the upper clamp plate 2 of the counter is covered with a counter panel 1; a counting window 13 is provided above the counter panel 1; the middle digit wheel 3 is located directly below the counting window 13, making it easy to view the water meter flow rate displayed on the middle digit wheel 3.

[0027] The working principle of this utility model is as follows:

[0028] The water flow below the water meter impacts the impeller, causing it to rotate, which in turn drives the gear set to rotate. When the gear set rotates, the first drive wheel 4, which meshes with the gear set, is driven to rotate, which in turn drives the first intermediate wheel 3, which meshes with the first drive wheel 4, to rotate. When the first intermediate wheel 3 rotates 360 degrees, it will drive the second intermediate wheel 3 to rotate 36 degrees through the dial wheel 6. This cycle continues, causing the intermediate wheel 3 to advance from right to left to display the cumulative water volume of the water meter. To check the cumulative water volume, simply look at the counting window 13.

[0029] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An internal gear counter transmission structure, characterized in that, The transmission structure includes an upper counter clamping plate (2) and a lower counter clamping plate (12) that are engaged together; a character wheel shaft (8) is provided inside the upper counter clamping plate (2); multiple intermediate character wheels (3) of the same size are sleeved on the character wheel shaft (8); multiple dial wheel brackets (5) are also sleeved on the character wheel shaft (8), and each dial wheel bracket (5) is sleeved between two intermediate character wheels (3) and is concealed by the intermediate character wheels (3) on both sides; dial wheels (6) are provided on the dial wheel brackets (5) and respectively mesh with the intermediate character wheels (3) on both sides; the rightmost side of the character wheel shaft (8) is sleeved with the first drive character wheel (4); a gear set is provided on the lower counter clamping plate (12); one side of the first drive character wheel (4) is meshed with the rightmost intermediate character wheel (3), and the other side is meshed with the gear set.

2. The internal gear counter transmission structure according to claim 1, characterized in that, The gear set includes gears K506 (9), K505 (10), and K507 (11) all connected to the lower clamp plate (12) of the counter; gear K507 (11) meshes with gear K506 (9); gear K506 (9) meshes with gear K505 (10); gear K505 (10) meshes with the first drive wheel (4).

3. The internal gear counter transmission structure according to claim 1, characterized in that, Both ends of the character wheel shaft (8) are fitted with bushings (7) for fixing the character wheel shaft (8) and adjusting the gap between the intermediate character wheel (3).

4. The internal gear counter transmission structure according to claim 3, characterized in that, The bushing (7) is made of 304 stainless steel.

5. The internal gear counter transmission structure according to claim 1, characterized in that, The counter upper clamp (2) is covered with a counter panel (1); a counting window (13) is provided above the counter panel (1); the middle digit wheel (3) is located just below the counting window (13).

Images