Encoder housing

Abstract

The utility model relates to an encoder shell. The device comprises a first shell, a second shell, a screwed plug, a rotating shaft and a coupler. The first shell is arranged on one side of the second shell, and the screwed plug is arranged on the outer side wall of the first shell; the interior of the cavity of the first shell is suitable for placing an encoder circuit board, one side, connected with the first shell, of the second shell is provided with a connecting pipe, and the cavity of the first shell is communicated with the cavity of the second shell through the connecting pipe; the rotating shaft is rotatably arranged in the connecting pipe, and the two ends of the rotating shaft are provided with a magnetic cup and a positioning groove respectively; the end, provided with the magnetic cup, of the rotating shaft extends into the cavity of the first shell, and the end, provided with the positioning groove, of the rotating shaft is connected with the coupler. The coupling is provided with a connecting piece matched with the positioning groove; the main body of the positioning groove is of a conical structure, and the positioning groove is tightly matched with the connecting piece, so that personal errors and connection deviation generated when the rotating shaft and the coupler are installed can be effectively avoided, and accurate positioning is ensured when the rotating shaft and the coupler are connected.

Description

Technical Field

[0001] The present application relates to the technical field of encoders, and in particular to an encoder housing. Background Art

[0002] When the encoder shaft and the coupling are installed, due to the poor alignment between the encoder shaft and the coupling, that is, the axes of the two are not in the same straight line, the axial clearance between the driven shaft of the coupling and the encoder shaft is too large, resulting in an unreliable installation between the coupling and the encoder shaft. When in use, axial movement occurs between the encoder shaft and the coupling under the action of load, causing the coupling to move. The existing solution is to reinstall the encoder shaft and the coupling, but when the existing encoder shaft is installed with the coupling, there is no positioning mechanism, so it is difficult for the operator to accurately determine whether the coupling and the encoder shaft are connected in place by visual or manual means. When the encoder shaft and the coupling deviate, it is difficult for the operator to find it due to the small deviation. During the long-term operation of the encoder, the deviation generated during the connection will gradually accumulate, and eventually cause the coupling to fall off the encoder shaft.

[0003] Therefore, how to ensure that the coupling is properly connected to the rotating shaft on the encoder has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0004] In view of this, the present application proposes an encoder housing, which is suitable for ensuring that the coupling is connected to the rotating shaft on the encoder in place.

[0005] According to one aspect of the present application, an encoder housing is provided, comprising: a first housing, a second housing, a screw plug, a rotating shaft and a coupling;

[0006] The first shell is arranged on one side of the second shell, and the screw plug is arranged on the outer side wall of the first shell;

[0007] The cavity of the first shell is suitable for placing an encoder circuit board, and a connecting pipe is provided on one side of the second shell connected to the first shell, and the cavity of the first shell is connected to the cavity of the second shell through the connecting pipe;

[0008] The rotating shaft is rotatably arranged in the connecting pipe, and a magnetic cup and a positioning groove are respectively arranged at both ends of the rotating shaft; the end of the rotating shaft provided with the magnetic cup is inserted into the cavity of the first shell, and the end of the rotating shaft provided with the positioning groove is connected to the coupling;

[0009] The coupling is provided with a connecting piece matching the positioning groove; the main body of the positioning groove is a conical structure.

[0010] In a possible implementation, a clearance groove is formed at one end of the rotating shaft located at the first shell, and the magnetic cup is embedded in the clearance groove.

[0011] In a possible implementation, a bearing spacer sleeve is provided around the inner sidewall of the connecting pipe; the outer contour of the bearing spacer sleeve matches that of the connecting pipe, and the bearing spacer sleeve is fixedly arranged on the inner sidewall of the connecting pipe.

[0012] In a possible implementation, 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.

[0013] In a possible implementation, a mounting seat is provided on the outer sidewall of the first housing; the plug is connected to the first housing through the mounting seat.

[0014] In a possible implementation, a threaded structure is provided on the outer sidewall of the plug, and a threaded structure is also provided on the inner sidewall of the mounting seat, and the plug is threadedly connected to the mounting seat.

[0015] In a possible implementation, a gripping portion is provided on the outer sidewall of the plug; the gripping portion is sleeved on the outer sidewall of the plug.

[0016] In a possible implementation, 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.

[0017] In a possible implementation, it further includes fixing lugs; the fixing lugs are provided around the outer sidewall of the second housing and are suitable for connecting to the flowmeter to be detected.

[0018] Advantages of the present application

[0019] Through the tight fit between the positioning groove and the connecting member, the human error and connection deviation that occur during the installation of the rotating shaft and the coupling can be effectively avoided, ensuring the precise positioning of the rotating shaft and the coupling during connection, and improving the connection accuracy and stability. Brief description of the drawings

[0020] 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.

[0021] Figure 1 Showing a schematic cross-sectional structure diagram of the encoder housing of the present application;

[0022] Figure 2 Showing a schematic structural diagram of the encoder rotating shaft of the present application;

[0023] Figure 3 Showing a schematic main structure diagram of the coupling of the present application. Detailed implementation manners

[0024] 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.

[0025] 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.

[0026] 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, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0027] The term "exemplary" used herein means "serving as an example, embodiment, or illustration". Any embodiment described as "exemplary" herein need not be construed as superior to or better than other embodiments.

[0028] In addition, for a better description of the present application, numerous specific details are given in the following detailed implementation manners. 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.

[0029] Figure 1 Showing a schematic cross-sectional structure diagram of the encoder housing of the present application; Figure 2 Showing a schematic structure diagram of the encoder rotating shaft of the present application; Figure 3The schematic diagram of the main structure of the coupling of the present application is shown. The present application provides an encoder housing, including: a first housing 110, a second housing 120, a plug 210, a rotating shaft 400 and a coupling 500; the first housing 110 is arranged on one side of the second housing 120, and the plug 210 is arranged on the outer wall of the first housing 110; the cavity inside the first housing 110 is suitable for placing an encoder circuit board 130, and a connecting pipe 300 is provided on one side of the second housing 120 connected to the first housing 110, and the cavity of the first housing 110 and the cavity of the second housing 120 are communicated through the connecting pipe 300; the rotating shaft 400 is rotatably arranged in the connecting pipe 300, and magnetic cups 410 and positioning grooves 420 are respectively arranged at both ends of the rotating shaft 400; one end of the rotating shaft 400 provided with the magnetic cup 410 extends into the cavity of the first housing 110, and one end of the rotating shaft 400 provided with the positioning groove 420 is connected to the coupling 500, and the positioning groove 420 has a conical structure; the coupling 500 is provided with a connecting member 510 matching the positioning groove 420.

[0030] It should be noted here that the plug 210 is arranged on the outer wall of the first housing 110. The plug 210 can effectively prevent external impurities from entering the chamber inside the encoder housing and ensure the normal operation of the encoder. The cavity of the first housing 110 and the cavity of the second housing 120 are communicated through the connecting pipe 300; the main body of the connecting pipe 300 has a tubular structure and openings are provided at both ends. The rotating shaft 400 of the encoder is rotatably arranged in the connecting pipe 300. The connecting pipe 300 provides a stable limiting space for the rotating shaft 400 of the encoder, ensuring that the movement of the rotating shaft 400 in the connecting pipe 300 is more accurate, reducing the movement error of the rotating shaft 400 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 400 drives the magnetic cup 410 to rotate together to generate 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. The magnetic signal is directly generated by driving the magnetic cup 410 to rotate through the rotating shaft 400, simplifying the signal generation process and improving the accuracy and reliability of the signal.

[0031] One end of the rotating shaft 400 provided with the positioning groove 420 is connected to the coupling 500. The coupling 500 is provided with a connecting member 510 matching the positioning groove 420. Through the tight fit of the positioning groove 420 and the connecting member 510, the human error and connection deviation occurring during the installation of the rotating shaft 400 and the coupling 500 can be effectively avoided, ensuring the accurate positioning of the rotating shaft 400 and the coupling 500 during connection and improving the connection accuracy and stability.

[0032] In a possible implementation manner, such as Figure 1 、 Figure 2As shown, a relief groove is provided at one end of the rotating shaft 400 located in the first housing 110. The relief groove matches the outer contour of the magnetic cup 410, and the magnetic cup 410 is embedded in the relief groove. The relief groove provides a stable limiting space for the magnetic cup 410, ensuring the precise positioning of the magnetic cup 410 on the rotating shaft 400. By providing the positioning groove 420, the overall structure of the encoder is made more compact, which is beneficial to the miniaturization and portability of the device.

[0033] In a possible implementation, as Figure 2 shown, the main body of the rotating shaft 400 has a cylindrical structure. An axial section is provided at one end of the rotating shaft 400 connected to the coupling 500. The axial section is parallel to the axis of the rotating shaft 400 and extends along the length direction of the rotating shaft 400. The positioning groove 420 is provided on the axial section of the rotating shaft 400. The positioning groove 420 of the rotating shaft 400 provides clear positioning and guidance for the connecting member 510 of the coupling 500, thereby preventing deviation or misalignment during the connection process.

[0034] Preferably, the main body of the positioning groove 420 has a conical structure. The conical positioning groove 420 is suitable for inserting into the connecting member 510 of the coupling 500, reducing the deviation and misalignment during the connection process. When the connecting member 510 of the coupling 500 enters the positioning groove 420 and is subjected to an axial force, the conical positioning groove 420 prevents the connecting member 510 from falling off or loosening under the action of an external force, ensuring the stability of the connection.

[0035] In a possible implementation, the depth of the positioning groove 420 ranges from 3.22 mm.

[0036] In a possible implementation, two or more positioning grooves 420 are provided. The two or more positioning grooves 420 are arranged and distributed along the length direction of the rotating shaft 400. Correspondingly, two or more matching connecting members 510 are provided on the coupling 500. By providing two or more matching positioning grooves 420 and connecting members 510, the torque generated during the transmission process of the rotating shaft 400 can be more evenly dispersed, avoiding damage caused by excessive single-point stress. At the same time, the influence of cumulative error can be reduced, ensuring the stable connection between the rotating shaft 400 and the coupling 500, and also improving the accuracy and precision of the connection.

[0037] In a possible implementation, as Figure 3As shown, the main body of the coupling 500 is a hollow tubular structure. The cavity of the coupling 500 matches the outer contour of the axial section of the rotating shaft 400. One end of the rotating shaft 400 with an axial section penetrates into the cavity of the coupling 500. More than two mounting holes are provided on the outer side wall of the coupling 500. The mounting holes correspond to the positioning grooves 420 and are arranged along the length direction of the coupling 500. The connecting member 510 penetrates through the mounting holes and extends into the positioning grooves 420, thereby fixedly connecting the coupling 500 and the rotating shaft 400, preventing the rotating shaft 400 and the coupling 500 from moving up and down, and ensuring the stability of the overall structure.

[0038] Furthermore, external threads are provided on the outer side wall of the connecting member 510, and internal threads matching the external threads are provided on the inner side wall of the mounting hole. The connecting member 510 is threadedly connected to the mounting hole on the coupling 500. By screwing the connecting member 510, the external threads of the connecting member 510 are tightly fitted with the internal threads of the mounting hole. Continue to screw the connecting member 510 until the connecting member 510 extends into the positioning groove 420 of the rotating shaft 400 and abuts against the positioning groove 420. Through the threaded connection between the connecting member 510 and the mounting hole on the coupling 500 and the connecting member 510 extending into the positioning groove 420 and abutting against the positioning groove 420, the accuracy of the connection and the stability of the overall structure are ensured.

[0039] Preferably, the connecting member 510 is a bolt.

[0040] In a possible implementation manner, a bearing spacer 310 is provided in a ring shape on the inner side wall of the connecting pipe 300; the outer contour of the bearing spacer 310 matches the connecting pipe 300, and the bearing spacer 310 is fixedly arranged on the inner side wall of the connecting pipe 300. It should be noted here that the main body of the bearing spacer 310 is a columnar structure with openings at both ends. The bearing spacer 310 is fixedly installed on the inner side wall of the connecting pipe 300, and the rotating shaft 400 on the encoder sequentially penetrates through the connecting pipe 300 and the bearing spacer 310, ensuring that the rotating shaft 400 always maintains a stable axial position during rotation, preventing friction between the rotating shaft 400 and the connecting pipe 300, and extending the service life of the rotating shaft 400.

[0041] In a possible implementation manner, two rolling bearings 320 are further included. The two rolling bearings 320 are arranged between the rotating shaft 400 and the connecting pipe 300, and the two rolling bearings 320 are respectively located at both ends of the bearing spacer 310.

[0042] It should be noted here that as Figure 1As shown, the rolling bearing 320 is sleeved on the encoder shaft 400, the outer contours of the two rolling bearings 320 match the connecting tube 300, and the two rolling bearings 320 are respectively located at both ends of the bearing spacer 310, thereby ensuring that the two rolling bearings 320 are in a relatively stable position, avoiding the friction between the two rolling bearings 320 and the shaft 400 due to position offset. The encoder shaft 400 passes through one of the rolling bearings 320, the bearing spacer 310, and the other rolling bearing 320 in sequence. The design of the two rolling bearings 320 enhances the stability of the support for the encoder shaft 400, so that the shaft 400 can still maintain stable operation under high-speed rotation, thereby improving the stability of the overall structure.

[0043] Furthermore, a limit ring 411 is fixedly provided on the outer wall of the rotating shaft 400. The limit ring 411 is located at the bottom end of the connecting tube 300 and abuts against the rolling bearing 320. The limit ring 411 is suitable for providing support and fixation for the rolling bearing 320 to prevent the rolling bearing 320 from falling off during the rotation of the rotating shaft 400. By setting the limit ring 411, the consistency of the rotation of the rotating shaft 400 and the rolling bearing 320 is ensured, and the error caused by the change of the position of the rolling bearing 320 is reduced, thereby ensuring the accuracy and stability of the overall structure of the encoder.

[0044] In a possible implementation, a mounting seat 230 is provided on the outer wall of the first shell 110; the screw plug 210 is connected to the first shell 110 through the mounting seat 230. The main body of the mounting seat 230 is a hollow columnar structure, one end of the mounting seat 230 is fixedly mounted on the outer wall of the first shell 110, and the cavity of the mounting seat 230 is connected to the cavity of the first shell 110, and the other end of the mounting seat 230 is detachably connected to the screw plug 210.

[0045] Furthermore, the main body of the screw plug 210 is a tubular structure with openings at both ends, the outer wall of the screw plug 210 is provided with an external thread, and the inner wall of the mounting seat 230 is provided with a matching internal thread. By rotating the screw plug 210, the external thread on the screw plug 210 and the internal thread of the mounting seat 230 engage with each other, thereby stably mounting the screw plug 210 in the cavity of the mounting seat 230 of the first shell 110.

[0046] In a possible implementation, a gripping portion 211 is provided on the outer wall of the screw plug 210; the gripping portion 211 is sleeved on the outer wall of the screw plug 210. The worker loads and unloads the screw plug 210 by gripping the gripping portion 211 on the screw plug 210. The outer edge section of the gripping portion 211 away from the axis of the screw plug 210 is a regular polygon, preferably a regular hexagon. The side edges of the facing polygon are used to increase friction, thereby avoiding the possibility of slipping and difficulty in gripping when the worker loads and unloads the screw plug 210.

[0047] In a possible implementation manner, a sealing ring 220 is provided inside the mounting base 230. The main body of the sealing ring 220 is in a tubular structure, and both ends of the sealing ring 220 are respectively abutted against the first housing 110 and the plug 210. It should be noted here that the outer contour of the sealing ring 220 matches the inner side wall of the mounting base 230. The sealing ring 220 is installed inside the cavity of the mounting base 230 and is located between the plug 210 and the first housing 110. The sealing ring 220 provides a sealing barrier between the plug 210 and the mounting base 230, preventing external substances from entering the cavity of the first housing 110 through the plug 210.

[0048] Furthermore, the sealing ring 220 is made of elastic rubber material. The sealing ring 220 made of elastic rubber can compensate for the error between the plug 210 and the mounting base 230, thus ensuring that the sealing effect is not affected.

[0049] Furthermore, a sealing groove is formed on the inner side wall of the mounting base 230. The sealing groove matches the sealing ring 220. The sealing groove provides a limiting space for the sealing ring 220, so that the sealing ring 220 is embedded in the sealing groove inside the cavity of the mounting base 230, preventing the sealing ring 220 from shifting or misaligning during installation, which may cause external substances to enter the cavity of the encoder housing through the sealing ring 220. Through the cooperation of the sealing groove and the sealing ring 220, it is avoided that the encoder fails or is damaged due to external substances entering the cavity of the first housing 110 through the sealing ring 220, improving the sealing performance and stability of the overall device.

[0050] In a possible implementation manner, an opening is formed on the first housing 110. The nameplate 111 is installed at the opening end of the first housing 110 and is arranged adjacent to the plug 210. It should be noted here that the nameplate 111 is suitable for providing necessary identification information of the encoder. The opening end of the first housing 110 matches the outer contour of the nameplate 111. Epoxy resin is injected into the opening end of the first housing 110. There is a fixing member on the nameplate 110, and the fixing member penetrates through the nameplate 111. The fixing member is suitable for improving the firmness of the connection between the nameplate 111 and the first housing 110. When the epoxy resin is not cured, the nameplate 111 provided with the fixing member is placed in the epoxy resin at the opening end of the first housing 110. After the epoxy resin is cured, the nameplate 111 can be fixedly arranged at the opening end of the first housing 110. Through the cooperation of the fixing member and the epoxy resin, the nameplate 111 is fixedly arranged at the opening end of the first housing 110, preventing the nameplate 111 from falling off during use and ensuring the stability and reliability of the installation of the nameplate 111.

[0051] Furthermore, the fixing member is a lead seal screw and a nut, and the lead seal screw penetrates through the nameplate 111 and is connected to the nut.

[0052] In a possible implementation manner, a flat groove is formed on the inner side wall of the first housing 110, and the flat groove matches the outer contour of the encoder circuit board 130. The encoder circuit board 130 is fixedly installed on the flat groove of the first housing 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, and ensuring the stability of the overall structure.

[0053] In a possible implementation manner, it further includes fixing lugs 121. The fixing lugs 121 are annularly arranged on the outer side wall of the second housing 120 and are suitable for connecting with the flowmeter to be detected. It should be noted here that there are four fixing lugs 121, and the four fixing lugs 121 are symmetrically annularly arranged on the outer side wall of the bottom of the second housing 120. Bolts pass through the fixing lugs 121 of the encoder to connect with the flowmeter to be detected. By providing the fixing lugs 121, it is avoided that the encoder and the flowmeter to be detected will not become loose or separated due to vibration, ensuring the stable connection between the encoder and the flowmeter to be detected.

[0054] 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 variations 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, practical applications, or improvements to the technologies in the market, or to enable other ordinary skill in the art in the technical field to understand the disclosed embodiments.

Claims

1. An encoder housing, characterized in that: Including: a first housing, a second housing, a screw plug, a rotating shaft and a coupling; The first shell is arranged on one side of the second shell, and the wire plug is arranged on the outer side wall of the first shell; The cavity of the first shell is suitable for placing an encoder circuit board, and a connecting pipe is provided on one side of the second shell connected to the first shell, and the cavity of the first shell is connected to the cavity of the second shell through the connecting pipe; The rotating shaft is rotatably arranged in the connecting tube, and a magnetic cup and a positioning groove are respectively arranged at both ends of the rotating shaft; one end of the rotating shaft provided with the magnetic cup is inserted into the cavity of the first shell, and one end of the rotating shaft provided with the positioning groove is connected to the coupling; The coupling is provided with a connecting piece matching the positioning groove; The main body of the positioning groove is a conical structure.

2. The encoder housing according to claim 1, characterized in that A clearance groove is provided at one end of the rotating shaft located at the first shell, and the magnetic cup is embedded in the clearance groove.

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 the two ends of the sealing ring are respectively in contact with the first shell and the thread 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 with the flow meter to be detected.

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