Encoder housing

Abstract

The utility model relates to an encoder shell which is characterized by comprising a first shell body, a second shell body, a screwed plug, a rotating shaft and a sealing cover. The first shell is arranged on one side of the second shell, a connecting pipe is arranged on the side, connected with the first shell, of the second shell, and a cavity of the first shell communicates with a cavity of the second shell through the connecting pipe. The interior of a cavity of the first shell is suitable for containing an encoder circuit board, the rotating shaft is rotatably arranged in the connecting pipe, a magnetic cup is arranged at the end, stretching into the first shell, of the rotating shaft, and the other end of the rotating shaft is suitable for being connected with a coupler. The screwed plug is arranged on the outer side wall of the first shell; an opening is formed in the first shell, and the sealing cover is embedded in the opening end of the first shell; the annular groove is annularly formed in the side, facing the interior of the cavity of the first shell, of the sealing cover, the groove and the sealing cover are concentrically arranged, the groove is formed, the groove provides a deformation space for the sealing cover, and damage to the sealing cover caused by excessive extrusion is avoided.

Description

Technical Field

[0001] This application relates to the technical field of encoders, and particularly to an encoder housing. Background Art

[0002] In the application of fuel dispenser flow meters and encoders, to ensure that the encoder can work stably and accurately for a long time, it is necessary to ensure the sealing performance of the encoder's working environment to prevent foreign impurities, dust, moisture, etc. from entering and affecting its normal operation and accuracy. During the installation of existing sealing covers, due to improper operation or other factors, the sealing cover may be subjected to uneven stress and deform, which will affect the overall sealing effect of the encoder. Moreover, some sealing covers lack an effective mechanism to cope with installation deformation. Once deformation occurs, there may be a situation of poor sealing, allowing foreign impurities to enter.

[0003] How to avoid sealing failure caused by the deformation of the encoder's sealing cover has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] In view of this, this application provides an encoder housing, which is characterized by including: a first housing, a second housing, a plug, a rotating shaft, and a sealing cover;

[0005] The first housing is arranged on one side of the second housing. The second housing is connected to one side of the first housing and is provided with a connecting pipe. The cavity of the first housing communicates with the cavity of the second housing through the connecting pipe;

[0006] The inside of the cavity of the first housing is suitable for placing an encoder circuit board. The rotating shaft is rotatably arranged in the connecting pipe. One end of the rotating shaft extending into the first housing is provided with a magnetic cup, and the other end of the rotating shaft is suitable for being connected to a coupling;

[0007] The plug is arranged on the outer side wall of the first housing;

[0008] An opening is formed on the first housing, and the sealing cover is embedded at the opening end of the first housing; a ring-shaped groove is provided on one side of the sealing cover facing the inside of the cavity of the first housing. The groove is concentric with the sealing cover and is suitable for providing a deformation space for the sealing cover.

[0009] In a possible implementation manner, the main body of the sealing cover is in a circular structure, and the diameter of the sealing cover is greater than the diameter of the opening of the first housing.

[0010] In a possible implementation manner, a bearing spacer is provided on the inner side wall of the connecting pipe; the outer contour of the bearing spacer matches that of the connecting pipe, and the bearing spacer is fixedly arranged on the inner side wall of the connecting pipe.

[0011] In a possible implementation manner, it further includes two rolling bearings; the two rolling bearings are arranged between the rotating shaft and the connecting pipe, and the two rolling bearings are respectively located at both ends of the bearing spacer sleeve.

[0012] In a possible implementation manner, a mounting seat is provided on the outer side wall of the first housing; the plug is connected to the first housing through the mounting seat.

[0013] In a possible implementation manner, a threaded structure is provided on the outer side wall of the plug, and a threaded structure is also provided on the inner side wall of the mounting seat, and the plug is threadedly connected to the mounting seat.

[0014] In a possible implementation manner, a holding portion is provided on the outer side wall of the plug; the holding portion is sleeved on the outer side wall of the plug.

[0015] In a possible implementation manner, a sealing ring is provided inside the mounting seat; the main body of the sealing ring is in a tubular structure, and both ends of the sealing ring are respectively abutted against the first housing and the plug.

[0016] In a possible implementation manner, it further includes a fixing ear; the fixing ear is provided on the outer side wall of the second housing and is suitable for connecting the encoder to the flowmeter to be detected.

[0017] Advantages of the present application

[0018] By providing the groove, damage to the sealing cover caused by excessive extrusion is avoided. When the sealing cover is pressed onto the encoder housing, since the groove is concentric with the sealing cover, the annular structure of the groove can ensure that the pressure on the sealing cover is uniform in all directions, avoiding local stress concentration during the sealing process, thereby improving the uniformity and reliability of the seal. Brief description of the drawings

[0019] The drawings included in the specification and constituting a part of the specification, together with the specification, illustrate the exemplary embodiments, features and aspects of the present application, and are used to explain the principles of the present application.

[0020] Figure 1 Showing a schematic cross-sectional structure diagram of the encoder housing of the present application;

[0021] Figure 2 Showing a schematic cross-sectional structure diagram of the sealing cover of the present application;

[0022] Figure 3 Showing a schematic top view structure diagram of the sealing cover of the present application;

[0023] Figure 4 Showing a schematic structure diagram of the rotating shaft of the present application;

[0024] Figure 5 Showing a schematic diagram of the sealing cover of the present application. Detailed Implementation Modes

[0025] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0026] Among them, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0028] The special term "exemplary" herein means "serving as an example, embodiment, or illustration". Any embodiment described herein as "exemplary" is not necessarily to be construed as superior to or better than other embodiments.

[0029] In addition, for a better description of the present application, numerous specific details are given in the following detailed implementation modes. Those skilled in the art should understand that the present application can also be implemented without some specific details. In some instances, methods, means, elements, and circuits well-known to those skilled in the art are not described in detail so as to highlight the gist of the present application.

[0030] Figure 1 Showing a schematic cross-sectional structure diagram of the encoder housing of the present application; Figure 2 Showing a schematic cross-sectional structure diagram of the sealing cover of the present application; Figure 3 Showing a schematic top view structure diagram of the sealing cover of the present application; Figure 4 Showing a schematic structure diagram of the rotating shaft of the present application, Figure 5A schematic diagram showing the sealing cover of the present application. An encoder housing includes: a first housing 110, a second housing 120, a plug 500, a rotating shaft 300, and a sealing cover 400; the first housing 110 is disposed on one side of the second housing 120, and a connecting pipe 200 is provided on one side of the second housing 120 connecting the first housing 110. The cavity of the first housing 110 communicates with the cavity of the second housing 120 through the connecting pipe 200; the interior of the cavity of the first housing 110 is adapted to place an encoder circuit board 130. The rotating shaft 300 is rotatably disposed in the connecting pipe 200. One end of the rotating shaft 300 extending into the first housing 110 is provided with a magnetic cup 310, and the other end of the rotating shaft 300 is adapted to be connected to a coupling 350; the plug 500 is disposed on the outer sidewall of the first housing 110; an opening is provided on the first housing 110, and the sealing cover 400 is embedded at the opening end of the first housing 110; a circular groove 410 is provided in a ring shape on the side of the sealing cover 400 facing the interior of the cavity of the first housing 110. The groove 410 is concentric with the sealing cover 400, and the groove 410 is adapted to provide a deformation space for the sealing cover 400.

[0031] It should be noted here that the plug 500 is disposed on the outer sidewall of the first housing 110. The plug 500 can effectively prevent external impurities from entering the interior of the chamber of the encoder housing, ensuring the normal operation of the encoder. The cavity of the first housing 110 communicates with the cavity of the second housing 120 through the connecting pipe 200; the main body of the connecting pipe 200 is in a tubular structure and openings are provided at both ends. The rotating shaft 300 of the encoder is rotatably disposed in the connecting pipe 200. The connecting pipe 200 provides a stable limiting space for the rotating shaft 300 of the encoder, ensuring that the movement of the rotating shaft 300 in the connecting pipe 200 is more precise, reducing the movement error of the rotating shaft 300 caused by external factors. A communication cable is provided on the encoder, and the communication cable passes through the first housing 110 and is connected to an external device. The rotating shaft 300 drives the magnetic cup 310 to rotate, thereby generating a changing magnetic field. The changing magnetic field is detected by the encoder circuit board 130 and converted into an electrical signal. The communication cable on the encoder transmits the measured data to the external device, directly driving the magnetic cup 310 to rotate through the rotating shaft 300 to generate a magnetic signal, simplifying the process of signal generation and improving the accuracy and reliability of the signal.

[0032] The outer contour of the sealing cover 400 matches the opening of the first housing 110. The sealing cover 400 is tightly embedded in the opening end of the first housing 110 by pressing, ensuring that the sealing cover 400 is firmly fixed at the opening end of the first housing 110 and preventing external substances from entering the cavity inside the encoder housing. When the sealing cover 400 is pressed onto the opening end of the first housing 110, the sealing cover 400 will undergo a certain deformation. By setting the groove 410, this deformation can be controlled within a certain range, avoiding damage to the sealing cover 400 caused by excessive extrusion. When the sealing cover 400 is pressed onto the encoder housing, since the groove 410 is concentric with the sealing cover 400, the annular structure of the groove 410 can ensure that the pressure on the sealing cover 400 is uniform in all directions, avoiding local stress concentration during the sealing process, thereby improving the uniformity and reliability of the seal.

[0033] In a possible implementation, as Figure 2 、 Figure 3 shown, the main body of the sealing cover 400 is in a circular structure, and the diameter of the sealing cover 400 is larger than the diameter of the opening of the first housing 110. It should be noted here that the circular structure enables the sealing cover 400 to be evenly stressed when subjected to pressure, avoiding stress concentration caused by irregular shapes, thereby improving the reliability and stability of the seal. At the same time, when the perimeters are equal, the area of the circular structure is relatively small, so certain material costs can be saved. The design that the diameter of the sealing cover 400 is larger than the diameter of the opening of the first housing 110 enables the sealing cover 400 to form an interference fit with the opening of the first housing 110 when being pressed in or installed, that is, the outer edge of the sealing cover 400 will squeeze the edge of the opening of the first housing 110, thereby forming a tight contact surface, effectively preventing external substances from entering the cavity inside the encoder. The interference fit design also helps to prevent the sealing cover 400 from loosening or falling off due to vibration or other reasons during use, further improving the durability of the seal. Preferably, the sealing cover 400 is made of anti-rust aluminum material.

[0034] In a possible implementation, as Figure 2 、 Figure 5 shown, the thickness h2 of the sealing cover 400 is greater than the depth h3 of the groove 410, the diameter h1 of the sealing cover 400 is greater than the outer diameter h4 of the groove 410, and the outer diameter h4 of the groove 410 is greater than the inner diameter h5 of the groove 410. Further, the value of the diameter h1 of the sealing cover 400 is: 37.26 mm, the value of the thickness h2 of the sealing cover 400 is: 3.5 mm, correspondingly, the value of the depth h3 of the groove 410 is: 1.5 mm, the value of the outer diameter h4 of the groove 410 is 32.36 mm, and the value of the inner diameter h5 of the groove 410 is: 22.44 mm 。

[0035] In a possible implementation manner, a guiding groove is provided at the outer edge of one side of the sealing cover 400 facing the interior of the cavity of the first housing 110. The guiding groove is adapted to provide pre-positioning during the installation of the sealing cover 400, ensuring that the sealing cover 400 and the opening of the first housing 110 are in a horizontal state and the sealing cover 400 and the opening end of the first housing 110 are coaxial during pressing, avoiding tilting of the sealing cover 400 during pressing and resulting in sealing failure, and ensuring that the sealing cover 400 is firmly installed at the opening end of the first housing.

[0036] Further, as Figure 4 shown, the main body of the rotating shaft 300 has a cylindrical structure. A relief groove is provided at one end of the rotating shaft 300 located in the first housing 110. The relief groove matches the outer contour of the magnetic cup 310, and the magnetic cup 310 is embedded in the relief groove. The relief groove provides a stable limiting space for the magnetic cup 310, ensuring the precise positioning of the magnetic cup 310 on the rotating shaft 300.

[0037] In a possible implementation manner, as Figure 1 、 Figure 4 shown, an axial cutting surface is provided at one end of the rotating shaft 300 connecting the coupling 350. The axial cutting surface is parallel to the axis of the rotating shaft 300 and extends along the length direction of the rotating shaft 300. The main body of the coupling 350 has a hollow tubular structure. The cavity of the coupling 350 matches the outer contour of the axial cutting surface of the rotating shaft 300. One end of the rotating shaft 300 provided with the axial cutting surface extends into the cavity of the coupling 350. The inclined cutting surface of the rotating shaft 300 is in close contact with the inner side wall of the cavity of the coupling 350. The axial cutting surface of the rotating shaft 300 and the coupling 350 cooperate with each other, avoiding deviation or misalignment during the connection process. At the same time, the design of the inclined cutting surface on the rotating shaft 300 effectively avoids the left-right movement of the coupling 350, ensuring the stability of the overall structure.

[0038] In a possible implementation manner, a bearing spacer 210 is provided in a ring shape on the inner side wall of the connecting pipe 200; the outer contour of the bearing spacer 210 matches the connecting pipe 200, and the bearing spacer 210 is fixedly arranged on the inner side wall of the connecting pipe 200. It should be noted here that as Figure 1 shown, the main body of the bearing spacer 210 has a columnar structure and openings are provided at both ends. The bearing spacer 210 is fixedly installed on the inner side wall of the connecting pipe 200. The rotating shaft 300 on the encoder sequentially passes through the connecting pipe 200 and the bearing spacer 210, ensuring that the rotating shaft 300 always maintains a stable axial position during rotation, avoiding friction between the rotating shaft 300 and the connecting pipe 200, and extending the service life of the rotating shaft 300.

[0039] In a possible implementation, it further includes two rolling bearings 220. The two rolling bearings 220 are arranged between the rotating shaft 300 and the connecting pipe 200, and the two rolling bearings 220 are respectively located at both ends of the bearing spacer 210. It should be noted here that, as Figure 1 shown, the rolling bearings 220 are sleeved on the coded rotating shaft 300. The outer contours of the two rolling bearings 220 match the connecting pipe 200, and the two rolling bearings 220 are respectively located at both ends of the bearing spacer 210, thus ensuring a relatively stable position between the two rolling bearings 220 and preventing the two rolling bearings 220 from rubbing against the rotating shaft 300 due to position deviation. The rotating shaft 300 of the encoder sequentially passes through one of the rolling bearings 220, the bearing spacer 210, and the other rolling bearing 220. The design of the two rolling bearings 220 enhances the stability of the support for the rotating shaft 300 of the encoder, enabling the rotating shaft 300 to still operate smoothly under high-speed rotation, and improving the stability of the overall structure.

[0040] Furthermore, as Figure 1 shown, a limit ring 320 is fixedly arranged on the outer sidewall of the rotating shaft 300. The limit ring 320 is located at the bottom end of the connecting pipe 200 and abuts against the rolling bearing 220. The limit ring 320 is suitable for providing support and fixation for the rolling bearing 220, preventing the rolling bearing 220 from falling off during the rotation of the rotating shaft 300. By setting the limit ring 320, the consistency of the rotation between the rotating shaft 300 and the rolling bearing 220 is ensured, and the error caused by the change in the position of the rolling bearing 220 is reduced, thereby ensuring the accuracy and stability of the overall structure of the encoder.

[0041] In a possible implementation, a mounting seat 510 is arranged on the outer sidewall of the first housing 110; the plug 500 is connected to the first housing 110 through the mounting seat 510. The main body of the mounting seat 510 is a hollow columnar structure. One end of the mounting seat 510 is fixedly installed on the outer sidewall of the first housing 110, and the cavity of the mounting seat 510 communicates with the cavity of the first housing 110. The other end of the mounting seat 510 is detachably connected to the plug 500.

[0042] Furthermore, the main body of the plug 500 is a tubular structure with openings at both ends. An external thread structure is arranged on the outer sidewall of the plug 500, and a matching internal thread structure is arranged on the inner sidewall of the mounting seat 510. By rotating the plug 500, the external thread on the plug 500 engages with the internal thread on the mounting seat 510, thereby stably installing the plug 500 in the cavity of the mounting seat 510 of the first housing 110.

[0043] In a possible implementation, a gripping portion 530 is provided on the outer wall of the screw plug 500; the gripping portion 530 is sleeved on the outer wall of the screw plug 500. The staff loads and unloads the screw plug 500 by gripping the gripping portion 530 on the screw plug 500. The outer edge section of the gripping portion 530 away from the axis of the screw plug 500 is a regular polygon, preferably a regular hexagon. The side edges of the polygon are used to increase friction, thereby avoiding the possibility of slipping and difficulty in gripping when the staff loads and unloads the screw plug 500.

[0044] In a possible implementation, a sealing ring 520 is provided inside the mounting seat 510, and the main body of the sealing ring 520 is a tubular structure, and the two ends of the sealing ring 520 are respectively in contact with the first shell 110 and the screw plug 500. It should be noted here that the outer contour of the sealing ring 520 matches the inner side wall of the mounting seat 510, and the sealing ring 520 is installed inside the cavity of the mounting seat 510 and is located between the screw plug 500 and the first shell 110. The sealing ring 520 provides a sealing barrier between the screw plug 500 and the mounting seat 510, thereby preventing foreign substances from entering the cavity of the first shell 110 through the screw plug 500.

[0045] Furthermore, the sealing ring 520 is made of an elastic rubber material, and the sealing ring 520 made of elastic rubber can compensate for the error between the wire plug 500 and the mounting seat 510, thereby ensuring that the sealing effect is not affected.

[0046] Furthermore, a sealing groove is formed on the inner wall of the mounting seat 510, and the sealing groove matches the sealing ring 520. The sealing groove provides a limiting space for the sealing ring 520, so that the sealing ring 520 is embedded in the sealing groove in the cavity of the mounting seat 510, thereby preventing the sealing ring 520 from shifting or misaligning during installation and causing external matter to enter the cavity of the encoder housing through the sealing ring 520. Through the cooperation between the sealing groove and the sealing ring 520, the encoder is prevented from malfunctioning or being damaged due to external matter entering the cavity of the first shell 110 through the sealing ring 520, thereby improving the sealing and stability of the overall equipment.

[0047] In one possible implementation, a flat groove is formed on the inner wall of the first shell 110, and the flat groove matches the outer contour of the encoder circuit board 130. The encoder circuit board 130 is fixedly mounted on the flat groove of the first shell 110. The flat groove is suitable for providing stable support for the circuit board 130, avoiding displacement or loosening due to vibration or external force impact during installation or use, thereby ensuring the stability of the overall structure.

[0048] In a possible implementation manner, it further includes a fixing ear 140, which is looped on the outer side wall of the second housing 120 and is suitable for connecting with the flowmeter to be detected. It should be noted here that there are four fixing ears 140, and the four fixing ears 140 are symmetrically looped on the outer side wall of the bottom of the second housing 120. Bolts pass through the fixing ears 140 of the encoder and are connected to the flowmeter to be detected. By setting the fixing ears 140, it is avoided that the encoder and the flowmeter to be detected will not become loose or separated due to vibration, ensuring a stable connection between the encoder and the flowmeter to be detected.

[0049] The embodiments of the present application have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, the practical application or the improvement of the technology in the market, or to enable other ordinary technical personnel in the technical field to understand the embodiments disclosed herein.

Claims

1. An encoder housing, characterized in that: include: A first shell, a second shell, a screw plug, a rotating shaft and a sealing cover; The first shell is arranged on one side of the second shell, a connecting pipe is arranged on the side of the second shell connected to the first shell, and the cavity of the first shell is connected with the cavity of the second shell through the connecting pipe; The cavity of the first shell is suitable for placing an encoder circuit board, the shaft is rotatably arranged in the connecting tube, one end of the shaft extending into the first shell is provided with a magnetic cup, and the other end of the shaft is suitable for connecting with a coupling; The wire plug is arranged on the outer side wall of the first shell; The first shell is provided with an opening, and the sealing cover is embedded in the open end of the first shell; the sealing cover is provided with an annular groove on one side facing the inside of the cavity of the first shell, and the groove is arranged cocentrically with the sealing cover, and the groove is suitable for providing a deformation space for the sealing cover.

2. The encoder housing according to claim 1, characterized in that The main body of the sealing cover is in a circular structure, and the diameter of the sealing cover is larger than the diameter of the first shell opening.

3. The encoder housing according to claim 1, characterized in that: A bearing spacer is provided on the inner wall of the connecting pipe; The outer contour of the bearing spacer matches the connecting pipe, and the bearing spacer is fixedly arranged on the inner side wall of the connecting pipe.

4. The encoder housing according to claim 3, characterized in that: Also included are two rolling bearings; The two rolling bearings are arranged between the rotating shaft and the connecting pipe, and the two rolling bearings are respectively located at two ends of the bearing spacer.

5. The encoder housing according to claim 1, characterized in that: A mounting seat is provided on the outer side wall of the first shell; The wire plug is connected to the first shell through the mounting seat.

6. The encoder housing according to claim 5, characterized in that: A thread structure is provided on the outer side wall of the screw plug, and a thread structure is also provided on the inner side wall of the mounting seat. The screw plug is threadably connected to the mounting seat.

7. The encoder housing according to claim 6, characterized in that A gripping portion is provided on the outer side wall of the screw plug; The holding portion is sleeved on the outer side wall of the wire plug.

8. The encoder housing according to claim 5, characterized in that: A sealing ring is provided inside the mounting seat; The main body of the sealing ring is a tubular structure, and two ends of the sealing ring are respectively in contact with the first shell and the wire plug.

9. The encoder housing according to claim 1, characterized in that: Also included are fixing ears; The fixing earring is arranged on the outer side wall of the second shell and is suitable for connecting the encoder with the flow meter to be detected.

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