Hall current sensor for improving contact ratio of wire through hole and cable center

Abstract

The utility model relates to a Hall current sensor for improving the contact ratio of a wire through hole and the center of a cable, which comprises a shell, the shell is provided with the wire through hole, the wire through hole is a through hole, the shell is provided with two first bosses, the two first bosses are respectively arranged on the left side and the right side of the shell, and the two first bosses are symmetrical relative to the shell. The wire penetrating hole penetrates through the two first bosses; cable clamping devices are arranged on the two first bosses, the cable clamping devices are detachably connected with the corresponding first bosses, and the cable clamping devices are specifically spring jacket type clamping mechanisms; according to the utility model, the spring jacket type clamping mechanisms are arranged on the left side and the right side of the shell, so that the good centering property of the spring jacket type clamping mechanisms can be utilized to keep the good centering property of the cable penetrating through the wire penetrating hole, and the good coincidence degree of the center line penetrating through the wire penetrating hole and the center line of the cable is ensured; the precision of the Hall current sensor for detecting the current on the cable is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a Hall current sensor capable of improving the coincidence between a wire penetration hole and a cable center. Background Art

[0002] The Hall current sensor is based on the magnetic balance Hall principle. According to the Hall effect principle, a current Ic is passed through the control current end of the Hall element, and a magnetic field with a magnetic induction intensity of B is applied in the normal direction of the Hall element plane. Then, an electric potential VH will be generated perpendicular to the current and magnetic field direction (i.e., between the Hall output ends), which is called the Hall potential, and its magnitude is proportional to the control current I.

[0003] The through-hole Hall current sensor detects the current flowing through the cable by passing the cable through the input through-hole of the Hall current sensor. However, the installation requirements of the cable are high. It is necessary to ensure that the cable passes through the aperture vertically, the cable (or other current-carrying conductor) must be on the axis of the aperture, and the cable (or other current-carrying conductor) should preferably fill the aperture. There should be no strong magnetic field near the Hall current sensor. Since the cable is soft, it will deviate from the axis of the aperture a lot after passing through the through-hole, resulting in reduced detection accuracy. Utility Model Content

[0004] In order to solve the technical problems in the prior art that after a soft cable passes through a wire hole of a through-hole type Hall current sensor, the center line of the cable will deviate greatly from the axis of the aperture, resulting in reduced detection accuracy, the utility model provides a Hall current sensor with improved coincidence between the wire hole and the center of the cable.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A Hall current sensor for improving the coincidence degree between a wire through-hole and a cable center, comprising a shell, a wire through-hole being provided on the shell, and two first bosses being provided on the shell, the two first bosses being respectively provided on the left and right sides of the shell, the two first bosses being symmetrical with respect to the shell, and the wire through-hole passing through the two first bosses; a cable clamping device being provided on each of the two first bosses, the cable clamping device being detachably connected to the corresponding first boss, and the cable clamping device being specifically a spring sleeve type clamping mechanism.

[0007] The beneficial effect of the utility model is that by arranging the spring jacket type clamping mechanism on the left and right sides of the shell, the good tightening and centering property of the spring jacket type clamping mechanism can be utilized to maintain good centering of the cable passing through the wire hole, ensuring that the center line passing through the wire hole and the center line of the cable have a good coincidence, so as to improve the accuracy of the Hall current sensor in detecting the current on the cable.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the spring sleeve clamping mechanism includes a second boss, the second boss is fixedly connected to the corresponding first boss, a sleeve mounting hole is opened on the second boss, the sleeve mounting hole is connected to the wire through hole, and the center line of the sleeve mounting hole coincides with the center line of the wire through hole; a spring sleeve that is inserted and matched with the sleeve mounting hole is also provided on the second boss, and an end cover is also provided on the second boss, and the end cover is used to fix the spring sleeve.

[0010] The beneficial effect of adopting the above further solution is that by providing the second boss and the end cover, the spring jacket is fixed by the cooperation of the end cover and the second boss to prevent the spring jacket from falling off.

[0011] Furthermore, the jacket mounting hole is a tapered hole, and the spring jacket is a tapered spring jacket matching the tapered hole.

[0012] The beneficial effect of adopting the above further solution is that the conical spring sleeve can improve the centering during clamping.

[0013] Furthermore, the second boss is a cylindrical boss, and an external thread is provided on the outer circle of the second boss; one end of the end cover is provided with a positioning screw hole matching the external thread of the second boss, and the other end of the end cover is provided with a cable through hole connected to the positioning screw hole, and the diameter of the cable through hole is greater than or equal to the diameter of the inner hole of the spring sleeve.

[0014] Furthermore, a third boss is provided at the bottom of the positioning screw hole, and the cable passing hole passes through the third boss.

[0015] The beneficial effect of adopting the above further solution is that the spring jacket is fixed by abutting the end surface of the spring jacket using the third boss.

[0016] Furthermore, the third boss is a truncated cone-shaped boss, the diameter of the third boss close to the bottom of the positioning screw hole is larger than the diameter of the bottom of the hole away from the positioning screw hole, the center line of the third boss coincides with the center line of the cable passing hole; the diameter of the upper bottom surface of the third boss is smaller than the outer diameter of the spring clip sleeve.

[0017] Furthermore, a core rod is also provided on the shell, and the core rod is inserted and matched with the wire through hole, and the spring clips on both sides of the shell are respectively sleeved on both ends of the core rod.

[0018] The beneficial effect of adopting the above further solution is that by providing a core rod, the rigidity of the core rod can be utilized to improve the center overlap between the core rod and the wire through hole, so that the soft cable can be connected through the core rod to flow current through the core rod.

[0019] Furthermore, both ends of the core rod are provided with connection bosses, and the connection bosses are integrated with the core rod.

[0020] Furthermore, a wiring hole is provided on the wiring boss, and the wiring hole is a through hole.

[0021] Furthermore, mounting bosses are fixedly provided on the front and rear sides of the shell, and positioning screw mounting grooves are provided on the mounting bosses.

[0022] The beneficial effect of adopting the above further solution is that, by providing a mounting boss and a screw mounting groove, it is convenient to connect the mounting boss to an external structure by means of screws, thereby improving the convenience of sensor installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 is a schematic diagram of the structure of the shell;

[0025] Figure 3 is a cross-sectional view of the end cover;

[0026] Figure 4 It is a schematic diagram of the structure of the spring jacket;

[0027] Figure 5 This is a schematic diagram of the mandrel installation structure;

[0028] Figure 6 Schematic diagram of the structure of the mandrel.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1-shell, 2-first boss, 3-end cover, 4-spring jacket, 5-wire through hole, 6-second boss, 7-jacket mounting hole, 8-positioning screw hole, 9-third boss, 10-cable through hole, 11-core rod, 12-mounting boss, 13-positioning screw mounting slot, 14-wiring boss, 15-wiring hole. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] like Figure 1As shown, this embodiment provides a Hall current sensor for improving the center coincidence between a wire through hole and a cable, comprising a housing 1, a wire through hole 5 is provided on the housing 1, the wire through hole 5 is a through hole, two first bosses 2 are provided on the housing 1, the two first bosses 2 are respectively provided on the left and right sides of the housing 1, the two first bosses 2 are symmetrical to the housing 1, and the wire through hole 5 passes through the two first bosses 2; a cable clamping device is provided on both first bosses 2, the cable clamping device is detachably connected to the corresponding first boss 2, and the cable clamping device is specifically a spring clamping mechanism. Among them, the spring clamping mechanism is a tool clamping mechanism used in mechanical processing. Since the precision requirements for the tool clamping mechanism in mechanical processing are relatively high, the spring clamping mechanism is applied to the Hall current sensor, which can greatly improve the center line coincidence between the cable passing through the Hall current sensor and the wire through hole 5, thereby improving the current detection accuracy.

[0033] like Figure 2 As shown, in some embodiments, the spring jacket clamping mechanism includes a second boss 6, the second boss 6 is fixedly connected to the corresponding first boss 2, a jacket mounting hole 7 is provided on the second boss 6, the jacket mounting hole 7 is connected to the wire through hole 5, and the center line of the jacket mounting hole 7 coincides with the center line of the wire through hole 5; the second boss 6 is also provided with a spring jacket 4 that is inserted and matched with the jacket mounting hole 7, and the second boss 6 is also provided with an end cover 3, and the end cover 3 is used to fix the spring jacket 4. By providing the second boss 6 and the end cover 3, the spring jacket 4 is fixed by the end cover 3 and the second boss 6 to prevent the spring jacket 4 from falling off. The conical spring jacket can improve the centering during clamping. The small end diameter of the jacket mounting hole 7 is equal to the diameter of the wire through hole 5. Among them, the second boss 6 is a cylindrical boss, and the outer circle of the second boss 6 is provided with an external thread.

[0034] like Figure 3 One end of the end cover 3 is provided with a positioning screw hole 8 matching the external thread of the second boss 6, and the other end of the end cover 3 is provided with a cable through hole 10 connected to the positioning screw hole 8, and the diameter of the cable through hole 10 is greater than or equal to the diameter of the inner hole of the spring jacket 4. The first boss 2 can be provided in a cylindrical structure, and the outer diameter of the second boss 6 is smaller than the outer diameter of the first boss 2. A third boss 9 is provided at the bottom of the positioning screw hole 8, and the cable through hole 10 passes through the third boss 9. The spring jacket 4 is fixed by abutting the third boss 9 against the end surface of the spring jacket 4. The third boss 9 is integrated with the end cover 3, and the cable through hole 10 passes through the third boss 9 and is connected to the positioning screw hole 8.

[0035] like Figure 4As shown, the jacket mounting hole 7 is a tapered hole, and the spring jacket 4 is a tapered spring jacket matching the tapered hole.

[0036] Specifically, the third boss 9 is a truncated cone-shaped boss, the diameter of the bottom of the hole on the third boss 9 close to the positioning screw hole 8 is larger than the diameter of the bottom of the hole away from the positioning screw hole 8, the center line of the third boss 9 coincides with the center line of the cable through hole 10; the diameter of the upper bottom surface of the third boss 9 is smaller than the outer diameter of the spring jacket 4. Among them, the diameter of the cable through hole 10 is smaller than the diameter of the upper bottom surface of the third boss 9. When the cable passes through the middle hole of the spring jacket 4 and the cable through hole 10 in sequence, the end surface of the third boss 9 abuts against the large end surface of the spring jacket 4.

[0037] like Figure 5 As shown, the housing 1 is further provided with a core rod 11, the core rod 11 is inserted and matched with the wire through hole 5, and the spring clips 4 on both sides of the housing 1 are respectively sleeved on both ends of the core rod 11. By providing the core rod 11, the rigidity of the core rod 11 can be utilized to improve the center coincidence of the core rod 11 and the wire through hole 5, so that the soft cable can be connected through the core rod 11, so that the current can flow through the core rod 11.

[0038] In some embodiments, the housing 1 is further fixedly provided with mounting bosses 12 on both the front and rear sides, and the mounting bosses 12 are provided with positioning screw mounting slots 13; wherein, the screw mounting slots 13. By providing the mounting bosses 12 and the screw mounting slots 13, it is convenient to connect the mounting bosses 12 with external structures by screws, thereby improving the convenience of sensor installation.

[0039] like Figure 6 As shown, both ends of the core rod 11 are provided with connection bosses 14, and the connection bosses 14 are integrated with the core rod 11. A connection hole 15 is provided on the connection boss 14, and the connection hole 15 is a through hole. The core rod 11 is specifically a copper rod to improve the conductivity of the core rod 11.

[0040] The embodiment of the utility model can utilize the good tightening and centering property of the spring jacket type clamping mechanism by arranging the spring jacket type clamping mechanism on the left and right sides of the shell 1 to maintain good centering of the cable passing through the wire through hole 5 to ensure that the center line passing through the wire through hole 5 has a good coincidence with the center line of the cable, so as to improve the accuracy of the Hall current sensor in detecting the current on the cable.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the concept and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A Hall current sensor for improving the coincidence between the wire penetration hole and the cable center, characterized in that: The invention comprises a shell (1), wherein a wire through hole (5) is provided on the shell (1), wherein the wire through hole (5) is a through hole, wherein two first bosses (2) are provided on the shell (1), wherein the two first bosses (2) are respectively provided on the left and right sides of the shell (1), wherein the two first bosses (2) are symmetrical with respect to the shell (1), and wherein the wire through hole (5) passes through the two first bosses (2); and wherein a cable clamping device is provided on each of the two first bosses (2), wherein the cable clamping device is detachably connected to the corresponding first boss (2), and wherein the cable clamping device is specifically a spring sleeve type clamping mechanism.

2. The Hall current sensor for improving the coincidence between the wire penetration hole and the cable center according to claim 1, characterized in that: The spring sleeve clamping mechanism comprises a second boss (6), the second boss (6) is fixedly connected to the corresponding first boss (2), a sleeve mounting hole (7) is provided on the second boss (6), the sleeve mounting hole (7) is connected to the wire through hole (5), and the center line of the sleeve mounting hole (7) coincides with the center line of the wire through hole (5); the second boss (6) is also provided with a spring sleeve (4) inserted and matched with the sleeve mounting hole (7), and the second boss (6) is also provided with an end cover (3), and the end cover (3) is used to fix the spring sleeve (4).

3. The Hall current sensor for improving the coincidence between the wire penetration hole and the cable center according to claim 2, characterized in that: The jacket mounting hole (7) is a tapered hole, and the spring jacket (4) is a tapered spring jacket matching the tapered hole.

4. The Hall current sensor for improving the coincidence between the wire penetration hole and the cable center according to claim 2, characterized in that: The second boss (6) is a cylindrical boss, and an external thread is arranged on the outer circle of the second boss (6); one end of the end cover (3) is provided with a positioning screw hole (8) matching the external thread of the second boss (6), and the other end of the end cover (3) is provided with a cable through hole (10) connected to the positioning screw hole (8), and the diameter of the cable through hole (10) is greater than or equal to the diameter of the inner hole of the spring sleeve (4).

5. The Hall current sensor for improving the coincidence between the wire penetration hole and the cable center according to claim 4, characterized in that: A third boss (9) is provided at the bottom of the positioning screw hole (8), and the cable passing hole (10) passes through the third boss (9).

6. The Hall current sensor for improving the coincidence between the wire penetration hole and the cable center according to claim 5, characterized in that: The third boss (9) is a truncated cone-shaped boss, the diameter of the bottom of the third boss (9) close to the positioning screw hole (8) is larger than the diameter of the bottom of the hole away from the positioning screw hole (8), the center line of the third boss (9) coincides with the center line of the cable through hole (10); the diameter of the upper bottom surface of the third boss (9) is smaller than the outer diameter of the spring clip (4).

7. The Hall current sensor for improving the coincidence between the wire penetration hole and the cable center according to claim 3, characterized in that: The shell (1) is also provided with a core rod (11), the core rod (11) is inserted and matched with the wire through hole (5), and the spring clips (4) on both sides of the shell (1) are respectively sleeved on both ends of the core rod (11).

8. The Hall current sensor for improving the coincidence between the wire penetration hole and the cable center according to claim 7, characterized in that: Both ends of the core rod (11) are provided with connection bosses (14), and the connection bosses (14) are integrated with the core rod (11).

9. The Hall current sensor for improving the coincidence between the wire penetration hole and the cable center according to claim 8, characterized in that: The wiring boss (14) is provided with a wiring hole (15), and the wiring hole (15) is a through hole.

10. The Hall current sensor for improving the coincidence between the wire penetration hole and the cable center according to any one of claims 1 to 9, characterized in that: The housing (1) is also fixedly provided with mounting bosses (12) on both the front and rear sides, and the mounting bosses (12) are provided with positioning screw mounting grooves (13).

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