CN209745994U - Straight head type revolution speed transducer - Google Patents
Straight head type revolution speed transducer Download PDFInfo
- Publication number
- CN209745994U CN209745994U CN201920581102.5U CN201920581102U CN209745994U CN 209745994 U CN209745994 U CN 209745994U CN 201920581102 U CN201920581102 U CN 201920581102U CN 209745994 U CN209745994 U CN 209745994U
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- CN
- China
- Prior art keywords
- installation cavity
- copper sheathing
- hall element
- shell
- revolution speed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a straight head type revolution speed transducer, including shell, magnet steel, hall element and circuit board, the shell is straight cartridge type, and its one end has the installation cavity that is the open type, and the other end has the through-wire groove with the installation cavity intercommunication, and magnet steel, hall element and circuit board setting are fixed with the copper sheathing in the installation cavity, and the copper sheathing is pegged graft in the installation cavity, in the copper sheathing have with the inner chamber of installation cavity intercommunication, and the copper sheathing has a closed end face, and the closed end face extends to outside the installation cavity, and hall element fixes the closed end face inner wall at the copper sheathing, and hall element passes through the magnet steel and is connected with the circuit board. This straight first type revolution speed transducer adopts the straight first type structure of multistage plug-in type, simple structure, easy dismounting, and its one end is provided with the copper sheathing, and hall element installs in the copper sheathing, can effectively filter electromagnetic interference, improves the measuring accuracy greatly.
Description
Technical Field
The utility model relates to a speed sensor technical field especially relates to a straight head type speed sensor.
Background
Hall type speed sensors, such as the hall type speed sensor disclosed in patent No. CN204882601U, which is used as an electric power assisted speed unit for providing speed signals, have hall chips enclosed in a main body, and are low in precision, slow in response time, and poor in anti-electromagnetic interference capability, and have been gradually eliminated. Still like the anti-interference type hall formula tachometric transducer that patent number is CN205786682U discloses, it has increased one in the shell and has strained the magnetic sheet, though the interference killing feature has been improved to a certain extent, but because the shell inner structure is comparatively complicated, it is very inconvenient to strain the installation of magnetic sheet, if strain the magnetic sheet and take place to warp, shift, or drop, difficult the perception to influence the precision easily.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a straight head type revolution speed transducer that simple structure, convenient assembling, interference killing feature are strong, measurement accuracy is high.
The utility model discloses a realize through following technical scheme: the utility model provides a straight head type revolution speed transducer, includes shell, magnet steel, hall element and circuit board, the shell is straight cartridge type, and its one end has the installation cavity that is the open type, and the other end has the logical wire casing with the installation cavity intercommunication, magnet steel, hall element and circuit board setting are in the installation cavity, be fixed with the copper sheathing in the installation cavity, the copper sheathing inserts in the installation cavity, have in the copper sheathing with the inner chamber of installation cavity intercommunication, and the copper sheathing has a closed end face, closed end face extends to outside the installation cavity, hall element fixes the closed end face inner wall at the copper sheathing, and hall element passes through the magnet steel and is connected with the circuit board.
Preferably, the shell is a plastic shell, a steel connecting sleeve is inserted into one end, far away from the copper sleeve, of the shell, a cavity through which a cable can penetrate is formed in the steel connecting sleeve, and the cavity is communicated with the wire through groove.
In order to ensure the sealing property and the waterproof property, the cavity, the through line groove and the mounting cavity are filled with epoxy resin.
In order to fix the rotating speed sensor, a mounting hole is further formed in one side of the middle of the shell, and a metal insert is arranged in the mounting hole.
In order to facilitate the insertion of the copper sleeve, an annular step surface is arranged in the mounting cavity, and the end surface of one end of the copper sleeve abuts against the annular step surface.
In order to ensure the precision, the thickness of the closed end face is not too thick, and the thickness of the closed end face is preferably 0.5mm after being tested for many times.
The utility model has the advantages that: this straight first type revolution speed transducer adopts the straight first type structure of multistage plug-in type, simple structure, easy dismounting, and its one end is provided with the copper sheathing, and hall element installs in the copper sheathing, can effectively filter electromagnetic interference, improves the measuring accuracy greatly.
Drawings
Fig. 1 is a schematic structural diagram of a straight-head type revolution speed sensor according to the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be clearly and clearly defined.
The straight-head type rotation speed sensor shown in fig. 1 comprises a steel connecting sleeve 2 and a plastic shell 3 which are connected in an inserted manner.
The shell 3 is a straight cylinder type, an installation cavity with an opening is formed in the bottom end of the shell, a wire through groove 11 communicated with the installation cavity is formed in the top end of the shell, magnetic steel 8, a Hall element 7 and a circuit board 10 are arranged in the installation cavity, an annular step surface is arranged in the installation cavity, a cylindrical through groove with the diameter larger than that of the installation cavity is formed, a cylindrical copper sleeve 5 is inserted into the cylindrical through groove and in interference fit with the cylindrical through groove, the top end surface of the cylindrical through groove abuts against the annular step surface, a closed end surface 6 is arranged at the bottom end of the copper sleeve 5, the closed end surface 6 extends out of the installation cavity, the thickness of the closed end surface is about 0.5mm, an inner cavity communicated with the installation cavity is formed in the copper sleeve 5, the Hall element 7 is fixed on the inner wall of the closed end surface 6 of.
The utility model discloses a rotary speed sensor, including shell 3, metal insert 12, screw, nut, mounting hole 12 is still provided with on one side in the middle part of shell 3 for this speed sensor of installation is fixed, be equipped with metal insert 12 in the mounting hole, metal insert 12 can avoid screw, nut to crush the mounting hole position of the shell 3 of plastics when tight.
The top end of the shell 3 is provided with a connecting part, the shell 3 is connected with the steel connecting sleeve 2 through the connecting part in an inserting mode, a cavity which can be used for a cable 4 of the cable joint 1 to penetrate through is formed in the steel connecting sleeve 2, the cavity is communicated with the through line groove 11, and an electric wire in the cable 4 penetrates through the through line groove 11 and is connected with the circuit board 9. The outer wall of the shell 3 is also integrally formed with a groove for placing an O-shaped rubber sealing ring 13, and the O-shaped rubber sealing ring is used for leaking and generating faults due to pressure generated when the temperature rises due to lubricating oil after an engine or equipment runs, and can also be used for placing a metal clamp spring in a clamping groove with non-sealing requirements to install and fix the rotating speed sensor.
After the shell 3, the steel connecting sleeve 2 and the internal elements are installed, the epoxy resin 10 is injected, so that the cavity of the steel connecting sleeve 2, the through line groove 11 of the shell 3, the installation cavity, the inner cavity of the copper sleeve 5 and other gaps are filled with the epoxy resin 10, and the sealing performance is ensured.
It should be noted that the inserting manner of the outer shell, the steel connecting sleeve and the copper sleeve is not limited to the illustration, for example, the steel connecting sleeve may be inserted into the top end of the outer shell, and the bottom end of the outer shell may be inserted into the copper sleeve. The shapes of the housing, the steel connecting sleeve and the copper sleeve are not limited to the shapes shown in the figures, and can be cylindrical, elliptical, rectangular, waist-shaped and the like.
In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "provided," "having," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The utility model provides a straight head type speed sensor, includes shell, magnet steel, hall element and circuit board, its characterized in that: the casing is the straight tube type, and its one end has the installation cavity that is the open type, and the other end has the through-wire groove with the installation cavity intercommunication, magnet steel, hall element and circuit board setting are in the installation cavity, be fixed with the copper sheathing in the installation cavity, the copper sheathing plug-in have in the installation cavity with the inner chamber of installation cavity intercommunication, and the copper sheathing has a closed end face, the closed end face extends to outside the installation cavity, hall element fixes the closed end face inner wall at the copper sheathing, and hall element passes through the magnet steel and is connected with the circuit board.
2. The straight head type revolution speed sensor according to claim 1, characterized in that: the shell is a plastic shell, one end of the shell, far away from the copper sleeve, is connected with a steel connecting sleeve, a cavity through which a cable can penetrate is formed in the steel connecting sleeve, and the cavity is communicated with the wire through groove.
3. The straight head type revolution speed sensor according to claim 2, characterized in that: and epoxy resin is filled in the cavity, the through wire groove and the mounting cavity.
4. The straight head type revolution speed sensor according to claim 1, characterized in that: and a mounting hole is further formed in one side of the middle of the shell, and a metal insert is arranged in the mounting hole.
5. The straight head type revolution speed sensor according to claim 1, characterized in that: the installation cavity is internally provided with an annular step surface, and the end surface of one end of the copper sleeve is abutted against the annular step surface.
6. The straight head type revolution speed sensor according to claim 1, characterized in that: the thickness of the closed end face is 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920581102.5U CN209745994U (en) | 2019-04-25 | 2019-04-25 | Straight head type revolution speed transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920581102.5U CN209745994U (en) | 2019-04-25 | 2019-04-25 | Straight head type revolution speed transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209745994U true CN209745994U (en) | 2019-12-06 |
Family
ID=68722003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920581102.5U Expired - Fee Related CN209745994U (en) | 2019-04-25 | 2019-04-25 | Straight head type revolution speed transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209745994U (en) |
-
2019
- 2019-04-25 CN CN201920581102.5U patent/CN209745994U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213000 Xinnan village, Yaoguan Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: Changzhou Leili pressure controller Co.,Ltd. Address before: 213000 Xinnan village, Yaoguan Town, Wujin District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU LEILI PRESSURE CONTROLLER CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |