Encoder shell structure of oiling machine
By adding a cavity structure to the tanker encoder housing and separating the circuit board from the photoelectric code disc, the environmental adaptability problem of the housing structure to the photoelectric sensor is solved, and higher metrological accuracy and safety are achieved.
Patent Information
- Application Number
- CN202422502916.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-16
AI Technical Summary
The housing structure of the existing tanker encoder cannot fully adapt to the harsh environment, which affects the measurement accuracy of the photoelectric sensor.
Add a cavity to the original shell structure, place the circuit board separately in one cavity, and place the photocoding disc and photosensitive elements in another cavity to form three independently sealed cavity to avoid the influence of the circuit board on the photocoding disc.
It improves the measurement accuracy and safety of the tanker, prevents cheating, and ensures the stable operation of the photoelectric encoder in harsh environments.
Smart Images
Figure CN223154293U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of fuel dispenser encoders, and particularly to a housing structure of a fuel dispenser encoder. Background Art
[0002] As the core equipment of a modern gas station, the accuracy and stability of fuel dispenser metering are crucial. The fuel dispenser encoder is the core component of the fuel dispenser. It can convert flow data into electronic signals, which are received and processed by the control system of the fuel dispenser and finally displayed on the billing display screen of the fuel dispenser. The fuel dispenser encoder consists of two parts: mechanical and electronic. The mechanical part refers to the housing structure of the encoder, and the electronic part refers to the circuit board and connecting cables. The fuel dispenser encoder works in an explosive gas environment. Therefore, explosion-proof performance is its basic requirement, and metering accuracy and stability are its important qualitative indicators. Currently, the fuel dispenser encoders in use usually adopt the principle of photoelectric or magnetic field induction. When the rotor or gear of the flowmeter rotates, it will trigger the photoelectric or magnetic induction sensor inside the encoder, thereby generating pulse signals. These pulse signals are received and processed by the controller, used to calculate the total amount and amount of fuel added, and displayed on the billing display screen of the fuel dispenser to provide accurate fuel volume and cost information to users. Therefore, the accuracy of the fuel dispenser encoder is closely related to the photoelectric sensor and the magnetic induction sensor. In particular, the photoelectric sensor uses the optical principle to measure the rotation angle, is very sensitive to dust and light, and is prone to misreading in harsh environments, affecting the metering accuracy. Summary of the Invention
[0003] This application provides a housing structure of a fuel dispenser encoder to solve the technical problem that the existing photoelectric encoder cannot fully meet the harsh requirements of the environment.
[0004] This application provides a housing structure of a fuel dispenser encoder, including a lower housing, an upper housing, and a housing cover plate; wherein, the upper housing has an upper space and a lower space, the inner surface of the lower housing adjacent to the flowmeter forms a first cavity, the upper surface of the lower housing and the lower space of the upper housing form a second cavity, and the upper space of the upper housing and the housing cover plate form a third cavity.
[0005] Optionally, in the housing structure of the fuel dispenser encoder as described above, the lower housing is in a cap shape, the bottom hollow skirt of the lower housing is provided with four mounting holes, a boss is suspended downward in the center of the top of the lower housing, and a hole penetrates through the lower housing up and down on the boss.
[0006] Optionally, in the fuel dispenser encoder housing structure as described above, it further includes a waterproof bearing, a transmission shaft, a seal, and a through cover. The waterproof bearing is installed in the hole that penetrates the lower housing vertically. The transmission shaft is rotatably assembled in the waterproof bearing. There are two through covers, and one seal is installed in each through cover. The two through covers are respectively installed on the upper and lower surfaces of the boss to seal and isolate the second cavity from the first cavity.
[0007] Optionally, in the fuel dispenser encoder housing structure as described above, there are two waterproof bearings. The two waterproof bearings jointly support the transmission shaft to penetrate through the first cavity and the second cavity.
[0008] Optionally, in the fuel dispenser encoder housing structure as described above, it further includes a code disk mounting seat, a code disk, and a photosensitive element. The transmission shaft has an input end and an output end. The input end is located in the first cavity, and a coupling is installed at the tail of the input end. The output end is located in the second cavity, and the code disk mounting seat is installed at the tail of the output end. The code disk is coaxially installed on the code disk mounting seat. The photosensitive element is arranged on the upper side wall inside the second cavity, and the photosensitive element is used to detect the light pulse signal reflected by the code disk from the light emitted by the light-emitting element.
[0009] Optionally, in the fuel dispenser encoder housing structure as described above, the upper housing is a cylindrical-like structure with a partition in the middle. The partition makes the upper housing have an upper space and a lower space.
[0010] Optionally, in the fuel dispenser encoder housing structure as described above, the upper housing is installed on the upper surface of the lower housing through first connecting bolts, and a sealing ring is arranged on the contact surface between the upper housing and the lower housing.
[0011] Optionally, in the fuel dispenser encoder housing structure as described above, an outlet and a circuit board are arranged in the third cavity. The photosensitive element and the light-emitting element are soldered on the circuit board. A through hole is arranged on the middle partition of the upper housing, and the photosensitive element and the light-emitting element are arranged in the second cavity through the through hole.
[0012] Optionally, in the fuel dispenser encoder housing structure as described above, the circuit board and the outlet are potted in the third cavity.
[0013] Optionally, in the fuel dispenser encoder housing structure as described above, the housing cover is installed on the upper surface of the upper housing through second connecting bolts
[0014] The fuel dispenser encoder housing structure provided by this application adds a cavity to the original housing structure by setting three cavities, enabling the circuit board to enter a cavity separately, while the optical encoder disc and photosensitive components are arranged in another cavity, thereby avoiding the possible influence of the electrical board on the optical encoder disc. Brief Description of the Drawings
[0015] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.
[0016] Figure 1 The front view of a fuel dispenser encoder housing structure provided by an embodiment of this application;
[0017] Figure 2 The A-A cross-sectional view in the front view of a fuel dispenser encoder housing structure provided by an embodiment of this application;
[0018] Figure 3 The top view of a fuel dispenser encoder housing structure provided by an embodiment of this application;
[0019] Figure 4 The plan view of a fuel dispenser encoder housing structure provided by an embodiment of this application;
[0020] Figure 5 The left view of a fuel dispenser encoder housing structure provided by an embodiment of this application.
[0021] Description of the Reference Numerals:
[0022] 1. Lower housing; 2. Upper housing; 3. Housing cover plate; 4. Photosensitive component; 5. Encoder disc; 6. Encoder disc mounting seat; 7. Outlet; 8. Circuit board; 9. Waterproof bearing; 10. Sealing ring; 11. Transmission shaft; 12. Coupling; 13. Sealing member; 14. Transparent cover; 15. Boss; A. First cavity; B. Second cavity; C. Third cavity.
[0023] Through the above accompanying drawings, the specific embodiments of this application have been shown, and there will be more detailed descriptions hereinafter. These accompanying drawings and written descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. Detailed Embodiments
[0024] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.
[0025] Currently, for the encoder housing of a fuel dispenser in the prior art, there are only two cavities. One cavity is used to connect to the flowmeter, and the other cavity is used to house the optical code disk, photosensitive element, and circuit board. This kind of housing structure cannot fully meet the stringent requirements of the environment. Since the optical code disk, photosensitive element, and circuit board are arranged in one cavity, the circuit board will inevitably affect the optical code disk, thereby affecting the measurement accuracy.
[0026] In view of the above technical problems, the embodiment of the present application provides a fuel dispenser encoder housing structure. By improving the existing fuel dispenser encoder housing structure, an additional cavity is added to the original two cavities to avoid the influence of the circuit board on the measurement, enabling the fuel dispenser to obtain higher accuracy and ensuring the accuracy and safety of the fuel dispenser.
[0027] The technical solution of the present application and how the technical solution of the present application solves the above technical problems will be described in detail below with specific embodiments. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.
[0028] As Figures 1 to 5 shown, the fuel dispenser encoder housing structure includes a lower housing 1, an upper housing 2, and a housing cover 3. Among them, the upper housing 1 has an upper space and a lower space. The inner surface of the lower housing 2 adjacent to the flowmeter forms a first cavity A. The upper surface of the lower housing 1 and the lower space of the upper housing 2 form a second cavity B. The upper space of the upper housing 2 and the housing cover 3 form a third cavity C.
[0029] In this embodiment, the existing fuel dispenser encoder housing structure is improved. By setting the lower housing 1, the upper housing 2, and the housing cover 3, and the upper housing 1 can be set as a cylindrical-like structure with upper and lower spaces. At this time, the overall housing structure forms three independent and sealed cavities, namely the first housing A, the second housing B, and the third housing C. The third housing C can be used as the installation cavity for the circuit board. The optical code disk and photosensitive element can be assembled in the second housing B, and the first housing A is used to connect to the flowmeter. This avoids the influence of the circuit board on the measurement, enabling the fuel dispenser to obtain higher accuracy and ensuring the accuracy and safety of the fuel dispenser.
[0030] In some embodiments, as Figure 2 shown, the lower housing 1 can be selected as a cap shape. There are four mounting holes in the bottom hollow skirt for connection with the flowmeter. A boss 15 is suspended downward in the center of the top. There is a hole in the boss 15 that penetrates the housing 1 up and down. This hole is used to install the waterproof bearing 9. In order to make the transmission shaft 11 run smoothly, two waterproof bearings 9 are used; two covers 14 with seals 13 installed are respectively installed on the upper and lower surfaces of the boss, completely isolating and sealing the second cavity B from the first cavity A.
[0031] In some embodiments, as Figure 2 shown, the encoder housing structure of the fuel dispenser further includes a code disk mounting seat 6, a code disk 5, and a photosensitive element 4; the transmission shaft 11 has an input end and an output end. The input end is located in the first cavity A. A coupling 12 is installed at the tail of the input end. The output end is located in the second cavity B. The code disk mounting seat 6 is installed at the tail of the output end. The code disk 5 is coaxially installed on the code disk mounting seat 6. The photosensitive element 4 is arranged on the upper side wall inside the second cavity B. The photosensitive element 4 is used to detect the optical pulse signal of the light emitted by a light-emitting element (not shown in the figure) reflected by the code disk.
[0032] In this embodiment, the transmission shaft 11 is supported by two waterproof bearings 9 and penetrates through the first cavity A and the second cavity B. The input end of the transmission shaft 11 is located in the first cavity A. A coupling 12 is installed at the tail of the input end and is connected to the coupling at the output end of the flowmeter to synchronously transmit the fuel filling amount of the fuel dispenser. The output end of the transmission shaft 11 is located in the second cavity B. The code disk mounting seat 6 is installed at the tail of the output end. The code disk mounting seat 6 can rotate synchronously with the transmission shaft 11. The code disk 5 is pasted coaxially on the code disk mounting seat 6. The code disk 5 rotates with the code disk mounting seat 6. The photosensitive element 4 detects the optical pulse signal of the light emitted by the light-emitting element reflected by the code disk, and after processing, converts it into a digital signal and outputs it to be displayed on the billing display screen of the fuel dispenser.
[0033] In some embodiments, as Figure 2 shown, the upper housing 2 is arranged as a cylindrical-like structure with a partition in the middle. The upper housing 2 is divided into upper and lower parts by this partition, and the second cavity B and the third cavity C are respectively formed with the connected surfaces. The upper housing 2 is installed on the upper surface of the lower housing 1 with bolts. A sealing ring 10 is installed at the contact surface to isolate and seal it from the outside. After debugging and calibration, the connecting bolts can be lead-sealed to prevent cheating.
[0034] In some embodiments, as Figure 2As shown, the upper half of the upper housing 2 (i.e., the third cavity C) is provided with a wire outlet 7 and a circuit board 8; a photosensitive element 4 and a light-emitting element are soldered on the circuit board 8. The photosensitive element 4 and the light-emitting element extend into the second cavity B through the holes opened in the intermediate layer of the upper housing 2. By monitoring the change of the code disk position information and converting it into an optical pulse signal, it is transmitted to the processor, and the total amount and amount of refueling are calculated and displayed on the billing display screen of the fuel dispenser. After debugging and installation, the photosensitive element 4 and the light-emitting element are completely sealed with glue through the holes in the intermediate layer of the upper housing 2 to isolate them from the third cavity C, so that the second cavity B is completely isolated from the outside world, providing an ideal working environment for the optical encoder.
[0035] In some embodiments, considering that the encoder is a very important device in the fuel dispenser, to prevent cheating and artificially changing the parameters of the circuit board 8, after installation and debugging, the third cavity C needs to be potted, and the circuit board and the wire outlet 7 are completely potted in the third cavity C and cannot be opened. Otherwise, the encoder will fail.
[0036] In some embodiments, the housing cover 3 is installed on the upper surface of the upper housing 2 with second connecting bolts, and at the same time, the second connecting bolts can be lead-sealed to prevent cheating.
[0037] In summary, the fuel dispenser encoder housing structure provided by the embodiments of the present application completely seals the cavity where the optical code disk and the photosensitive element are located, so that its working space is completely free from the influence of dust and other light, enabling the fuel dispenser to obtain higher accuracy, ensuring the accuracy and safety of the fuel dispenser, and avoiding changing the true refueling information of the fuel dispenser by changing the magnetic field or other cheating means.
[0038] In this specification, the embodiments or implementation manners are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.
[0039] It should be noted that the phrases such as "an embodiment", "embodiment", "exemplary embodiment", "some embodiments" mentioned in the specification indicate that the described embodiment may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. Moreover, when combining an embodiment to describe a specific feature, structure or characteristic, it is within the knowledge scope of those skilled in the art to implement such a feature, structure or characteristic in combination with other embodiments, whether explicitly or implicitly described.
[0040] In general, terms should be understood at least in part in light of their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or property in the sense of a singular meaning, or can be used to describe a combination of features, structures, or properties in the sense of a plural meaning. Similarly, at least in part depending on the context, terms such as "a" or "the" can also be understood to convey a singular usage or a plural usage.
[0041] It should be readily understood that the terms "on", "above", and "over" in this disclosure should be construed in the broadest manner such that "on" not only means "directly on something", but also includes the meaning of "on something" with intervening features or layers therebetween, and "above" or "over" not only includes the meaning of "above" or "over something", but can also include the meaning of "above" or "over something" with no intervening features or layers therebetween (i.e., directly on something).
[0042] In addition, spatial relative terms may be used herein for ease of description, such as "below", "beneath", "under", "above", "over", etc., to describe the relationship of one element or feature to another as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatial relative descriptors used herein may be interpreted accordingly.
[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A fuel dispenser encoder housing structure, characterized in that, It includes a lower housing, an upper housing, and a housing cover plate; wherein, the upper housing has an upper space and a lower space, the inner surface of the lower housing adjacent to the flowmeter forms a first cavity, the upper surface of the lower housing and the lower space of the upper housing form a second cavity, and the upper space of the upper housing and the housing cover plate form a third cavity.
2. The fuel dispenser encoder housing structure according to claim 1, characterized in that, The lower housing is in a cap shape, there are four mounting holes on the hollow skirt at the bottom of the lower housing, a boss hangs down from the center of the top of the lower housing, and there is a hole on the boss that penetrates the lower housing up and down.
3. The fuel dispenser encoder housing structure according to claim 2, characterized in that, It further includes a waterproof bearing, a transmission shaft, a seal, and a through cover. The waterproof bearing is installed in the hole that penetrates the lower housing up and down, and the transmission shaft is rotatably assembled in the waterproof bearing; there are two through covers, and one seal is installed in each through cover. The two through covers are respectively installed on the upper and lower surfaces of the boss to seal and isolate the second cavity from the first cavity.
4. The fuel dispenser encoder housing structure according to claim 3, characterized in that, There are two waterproof bearings, and the two waterproof bearings jointly support the transmission shaft to penetrate through the first cavity and the second cavity.
5. The fuel dispenser encoder housing structure according to claim 4, wherein, It further includes a code disk mounting seat, a code disk, and a photosensitive element; the transmission shaft has an input end and an output end. The input end is located in the first cavity, a coupling is installed at the tail of the input end, the output end is located in the second cavity, the code disk mounting seat is installed at the tail of the output end, the code disk is coaxially installed on the code disk mounting seat, and the photosensitive element is arranged on the upper side wall inside the second cavity. The photosensitive element is used to detect the light pulse signal reflected by the code disk from the light emitted by the light emitting element.
6. The fuel dispenser encoder housing structure according to claim 1, characterized in that, The upper housing is a cylindrical - like structure with a partition in the middle. The partition makes the upper housing have an upper space and a lower space.
7. The fuel dispenser encoder housing structure according to claim 1, wherein, The upper housing is installed on the upper surface of the lower housing through first connecting bolts, and a sealing ring is arranged on the contact surface between the upper housing and the lower housing.
8. The fuel dispenser encoder housing structure according to claim 5, characterized in that, An outlet and a circuit board are arranged in the third cavity. The photosensitive element and the light emitting element are soldered on the circuit board. There is a through - hole on the middle partition of the upper housing, and the photosensitive element and the light emitting element are arranged in the second cavity through the through - hole.
9. The fuel dispenser encoder housing structure according to claim 8, wherein, The circuit board and the outlet are potted in the third cavity.
10. The fuel dispenser encoder housing structure according to claim 1, characterized in that, The housing cover plate is installed on the upper surface of the upper housing through second connecting bolts.