Sensor head

Abstract

The present invention proposes a sensor head for detecting the rotation speed and the origin position of the gear. The sensor head includes a mounting seat, a first circuit board, a second circuit board, a sensitive element and a magnet. The first circuit board is electrically connected to the second circuit board and is arranged on the mounting seat at intervals. The first circuit board is arranged on one side of the mounting seat. The sensitive element is arranged on the first circuit board to detect the rotation speed and the origin position of the gear. The magnet is arranged on the mounting seat to cooperate with the sensitive element for detection. By arranging the sensitive element on the first circuit board and electrically connecting the first circuit board with the second circuit board, when the sensitive element fails or needs to be replaced during use, it is only necessary to replace the first circuit board equipped with the sensitive element without scrapping or replacing the entire circuit board, thereby saving costs.

Description

Technical Field

[0001] The invention relates to a sensing mechanism, in particular to a sensor magnetic head. Background Art

[0002] In modern society, more and more places use sensors to detect and monitor the status of various devices or components. In the rotation control of gears, it is necessary to detect the speed of the gears and the origin position of the gears to locate the position of the gears, so sensors are needed to monitor them. However, the use of sensors to detect gears requires the installation of the teeth adjacent to the gears, which is prone to scratches during use, so the sensors need to be replaced frequently. The commonly used sensors now are all integrated designs, so the entire device needs to be replaced. Summary of the invention

[0003] In view of the above situation, it is necessary to provide a sensor head to solve the above problem.

[0004] A sensor head is used to detect the rotation speed and the origin position of a gear. The sensor head includes a mounting seat, a first circuit board, a second circuit board, a sensitive element and a magnet. The first circuit board is electrically connected to the second circuit board and is arranged on the mounting seat at intervals. The first circuit board is arranged on one side of the mounting seat. The sensitive element is arranged on the first circuit board to detect the rotation speed and the origin position of the gear. The magnet is arranged on the mounting seat to cooperate with the sensitive element for detection.

[0005] Furthermore, the sensor head also includes a connector arranged on the second circuit board.

[0006] Furthermore, a connecting female socket is provided on a surface of the first circuit board opposite to the second circuit board, and a receiving hole is provided on the connecting female socket; a connecting male socket is provided on a surface of the second circuit board opposite to the first circuit board, and the connecting male socket is used to be inserted into the receiving hole of the connecting female socket to electrically connect the first circuit board with the second circuit board.

[0007] Furthermore, the second circuit board is arranged on the other side of the mounting base relative to the first circuit board.

[0008] Furthermore, the mounting base includes a mounting portion and two fixing portions, the two fixing portions respectively extending outward from opposite sides of the mounting portion, the mounting portion is provided with a receiving groove, the magnet is arranged in the receiving groove, the first circuit board is arranged on the mounting portion and covers a side of the mounting portion provided with the receiving groove, and the second circuit board is arranged on a side of the mounting portion facing away from the first circuit board.

[0009] Furthermore, a fixing hole is provided on the fixing portion, and the fixing hole is used to cooperate with a fastener to fix the mounting seat.

[0010] Furthermore, the mounting portion and the fixing portion are integrally formed.

[0011] Furthermore, the sensor head further comprises a fastener, which passes through holes on the first circuit board and the mounting portion, and holes on the second circuit board and the mounting portion respectively to fix the first circuit board and the second circuit board to the mounting portion respectively.

[0012] Furthermore, the sensitive element is a magnetic sensor.

[0013] Furthermore, the magnet is a permanent magnet.

[0014] The sensor head sets the sensitive element on the first circuit board and electrically connects the first circuit board with the second circuit board. When the sensitive element fails or needs to be replaced during use, only the first circuit board with the sensitive element installed needs to be replaced, without the need to scrap or replace the entire circuit board, thus saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of a sensor head detection gear in one embodiment of the present invention.

[0016] Figure 2 yes Figure 1 A partially exploded perspective schematic diagram of a sensor head is shown.

[0017] Figure 3 yes Figure 1 A partially exploded perspective diagram of the sensor head from another perspective is shown.

[0018] Main component symbols

[0019]

[0020]

[0021] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centrally disposed element at the same time. When an element is considered to be "disposed on" another element, it may be directly disposed on the other element or there may be a centrally disposed element at the same time.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] See also Figure 1 The present invention provides a sensor head 100. The sensor head 100 can detect the rotation speed of a gear 200 and the origin position of the gear, so as to realize the positioning of the gear 200. The sensor head 100 includes a mounting seat 10, a first circuit board 20, a second circuit board 30, a sensitive element 40, a magnet 50 (such as Figure 2 ) and a connector 60. The first circuit board 20 and the second circuit board 30 are electrically connected and are respectively arranged on both sides of the mounting base 10. The sensitive element 40 is arranged on the first circuit board 20 to detect the rotation speed of the gear 200 and the origin position of the gear. The magnet 50 is arranged on the mounting base 10 to cooperate with the sensitive element 40 for detection. The connector 60 is arranged on the second circuit board 30 so that the sensor head 100 can be electrically connected to the external circuit.

[0026] Please also see Figure 2 and Figure 3 The mounting seat 10 includes a mounting portion 11 and two fixing portions 12. The mounting portion 11 is roughly in the shape of a rectangular parallelepiped. A receiving groove 111 is provided on the mounting portion 11. The magnet 50 is arranged in the receiving groove 111. The first circuit board 20 is arranged on the mounting portion 11 and covers a side on which the receiving groove 111 is provided. The second circuit board 30 is arranged on a side of the mounting portion 11 away from the first circuit board 20 and is parallel to the first circuit board 20. The mounting portion 11 and the fixing portion 12 are integrally formed and the two fixing portions 12 extend outward from the opposite sides of the mounting portion 11 respectively. A fixing hole 121 is provided on the fixing portion 12. The fixing hole 121 is used to cooperate with a fastener (such as a screw, a bolt, etc.) to fix the mounting seat 10.

[0027] The first circuit board 20 is a sensor element mounting board, and a circuit for controlling the sensor element 40 is disposed on the first circuit board 20 .

[0028] A female connection socket 21 is further disposed on a surface of the first circuit board 20 opposite to the second circuit board 30. A receiving hole 211 is formed on the female connection socket 21.

[0029] The second circuit board 30 is a control board, and a general control circuit is configured on the second circuit board 30 .

[0030] A male connector 31 is further disposed on a surface of the second circuit board 30 opposite to the first circuit board 20. The male connector 31 is inserted into the receiving hole 211 of the female connector 21 to cooperate with the female connector 21 to electrically connect the first circuit board 20 to the second circuit board 30.

[0031] The sensitive element 40 is disposed on a surface of the first circuit board 20 away from the mounting base 10 and is electrically connected to the circuit on the first circuit board 20 .

[0032] In this embodiment, there are two sensitive elements 40 , and the two sensitive elements 40 are disposed side by side on the first circuit board 20 .

[0033] In this embodiment, the sensitive element 40 is a magnetic sensitive element, and specifically, the sensitive element 40 is a magnetic sensitive sensor.

[0034] In this embodiment, there are two receiving grooves 111 arranged side by side, and there are two magnets 50 , and the two magnets 50 are respectively disposed in a corresponding one of the receiving grooves 111 .

[0035] In this embodiment, the magnet 50 is a permanent magnet.

[0036] The connector 60 is disposed on a surface of the second circuit board 30 away from the mounting base 10 and is electrically connected to the circuit on the second circuit board 30 .

[0037] In this embodiment, the mounting portion 11 is further provided with a positioning hole 112 and a mounting hole 113. The first circuit board 20 is provided with an alignment hole 22. The second circuit board 30 is provided with a mounting hole 32. The positioning hole 112 cooperates with the alignment hole 22 to position and fix the first circuit board 20 on the mounting seat 10 through fasteners (such as screws, bolts, etc.). The mounting hole 113 cooperates with the mounting hole 32 to fix the second circuit board 30 on the mounting seat 10 through fasteners (such as screws, bolts, etc.).

[0038] It can be understood that in other embodiments, positioning columns or positioning pins can be provided on the mounting portion 11 to be positioned with the alignment holes 22 and the installation holes 32 on the first circuit board 20 and the second circuit board 30, and positioning columns or positioning pins can be provided on the first circuit board 20 and the second circuit board 30 to be positioned with the positioning holes 112 and the installation holes 113 opened on the mounting portion 11.

[0039] During assembly, first position the second circuit board 30 on the mounting base 10 through the mounting hole 113 and the installation hole 32, fix it with fasteners, then install the magnet 50 into the receiving groove 111 of the mounting base 10, and finally, position the first circuit board 20 and the mounting base 10 through the positioning hole 112 and the alignment hole 22, insert the connecting male base 31 into the connecting female base 21, and fix it on the mounting base with fasteners.

[0040] When installing the sensor head 100, Figure 2 As shown, the sensitive element 40 on the first circuit board 20 is placed close to the teeth of the gear 200 (such as Figure 1 shown).

[0041] The sensor magnetic head 100 sets the sensitive element 40 on the first circuit board 20 and electrically connects the first circuit board 20 with the second circuit board 30, so that when the sensitive element 40 fails (such as being scratched or damaged) or needs to be replaced during use, only the first circuit board 20 on which the sensitive element 40 is installed needs to be replaced, without the need to scrap or replace the entire circuit board, thereby saving costs. In addition, only the replaced first circuit board 20 needs to be installed on the mounting base 10 through the positioning hole 112 and the alignment hole 22, without the need to re-position and calibrate the sensitive element 40 on the sensor, thereby improving work efficiency.

[0042] In addition, those skilled in the art may also make other changes within the spirit of the present invention. Of course, these changes made according to the spirit of the present invention should be included in the scope of protection required by the present invention.

Claims

1. A sensor head for detecting the rotation speed of a gear and the origin position of the gear, characterized in that: The sensor head includes a mounting seat, a first circuit board, a second circuit board, a sensitive element and a magnet, wherein the first circuit board and the second circuit board are electrically connected and are arranged on the mounting seat at intervals, the first circuit board is arranged on one side of the mounting seat, the sensitive element is arranged on the first circuit board to detect the rotation speed of the gear and the origin position of the gear, and the magnet is arranged on the mounting seat to cooperate with the sensitive element for detection; A female connection seat is provided on one side of the first circuit board opposite to the second circuit board, and a receiving hole is provided on the female connection seat; a male connection seat is provided on one side of the second circuit board opposite to the first circuit board, and the male connection seat is used to be inserted into the receiving hole of the female connection seat so as to electrically connect the first circuit board with the second circuit board; The mounting seat includes a mounting portion and two fixing portions, the two fixing portions respectively extending outward from opposite sides of the mounting portion, and the fixing portions are provided with fixing holes, and the fixing holes are used to cooperate with fasteners to fix the mounting seat; the sensor head also includes fasteners, and the fasteners respectively pass through the holes on the first circuit board and the mounting portion, and the holes on the second circuit board and the mounting portion to respectively fix the first circuit board and the second circuit board to the mounting portion.

2. The sensor head according to claim 1, wherein: The sensor head further includes a connector disposed on the second circuit board.

3. The sensor head according to claim 1, wherein: The second circuit board is arranged on the other side of the mounting seat relative to the first circuit board.

4. The sensor head according to claim 1 or 3, characterized in that: The mounting portion is provided with a receiving groove, the magnet is arranged in the receiving groove, the first circuit board is arranged on the mounting portion and covers a side of the mounting portion provided with the receiving groove, and the second circuit board is arranged on a side of the mounting portion away from the first circuit board.

5. The sensor head according to claim 1, wherein: The mounting portion and the fixing portion are integrally formed.

6. The sensor head according to claim 1, wherein: The sensitive element is a magnetic sensor.

7. The sensor head according to claim 1, wherein: The magnet is a permanent magnet.

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