Hall switch

Abstract

The utility model discloses a Hall switch, which comprises a shell, a circuit board, an outer cover and the like, the shell is movably connected with the outer cover, a cavity and a shielding groove are respectively arranged in the shell, a limiting groove is arranged on a reinforcing rib arranged at the bottom of the cavity, sliding grooves are arranged in the middles of two sides of the cavity, and the circuit board is arranged at the limiting groove through the sliding grooves. The heat dissipation holes in the bottom are distributed in an array mode, heat dissipation grooves are formed in the positions, corresponding to the heat dissipation holes, of the shell, ventilation openings are formed in the outer cover, the ventilation plugs enter the heat dissipation grooves through the ventilation openings, and the electromagnetic shielding pieces are arranged in the shielding grooves. According to the Hall switch, the heat dissipation problem is solved through the synergistic effect of the cavity heat dissipation holes and the vent plug, electromagnetic interference is resisted by using the shielding groove and the electromagnetic shielding sheet, the element is more convenient to maintain, replace and replace through the sliding grooves with the guide inclined planes and the reinforcing ribs with the limiting grooves, and the overall performance of the Hall switch is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic switch technical field more specifically, it relates to a hall switch. BACKGROUND

[0002] The utility model discloses a hall switch wire harness discloses a kind of hall switch wire harness, by element is placed in the groove constructed in base and upper cover to be fixed protection, and by means of buckle structure, effectively solve the element protection, convenient disassembly and wire harness protection etc.

[0003] However, the above-mentioned patent still has the following deficiencies: when in complex electromagnetic environment, the Hall element is easily disturbed and cannot operate normally; in addition, heat accumulates and is difficult to dissipate after long-term use of the Hall switch, the performance of internal components decreases, and the service life is reduced. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a touch switch to solve the problems raised in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a hall switch, including shell, circuit board, outer cover, characterized by: the shell is movably connected with the outer cover, a cavity and a shielding groove are formed in the shell, reinforcing ribs are arranged on the bottom of the cavity, limit grooves are arranged on the reinforcing ribs, sliding grooves are arranged on the middle of the two sides of the cavity, and the circuit board is placed in the limit grooves after passing through the sliding grooves; heat dissipation holes are arranged on the bottom of the two sides of the cavity; heat dissipation grooves are formed in the shell corresponding to the heat dissipation holes; ventilation openings are formed in the outer cover corresponding to the heat dissipation grooves; air permeable plugs enter the heat dissipation grooves through the ventilation openings; electromagnetic shielding sheets are placed in the shielding grooves.

[0006] The utility model is further provided as follows: the outer cover is provided with protrusions corresponding to the shielding grooves, and the shell and the outer cover are connected by buckling.

[0007] The utility model is further provided as follows: the reinforcing ribs are arranged in three groups and are distributed at intervals.

[0008] The utility model is further provided as follows: the inlet end of the sliding groove is provided with a guide inclined surface.

[0009] The utility model is further provided as follows: the heat dissipation holes are arranged in an array on the bottom of the two sides of the cavity.

[0010] The utility model is further provided as follows: the top of the shell has a protrusion, and a bolt hole is arranged on the protrusion.

[0011] The utility model further sets up: be equipped with the hollow boss of one body forming on the outer cover.

[0012] The utility model further sets up: the electromagnetic shield piece is copper sheet.

[0013] The utility model further sets up: the breathable plug material is the terylene of swelling.

[0014] Summarized above, the utility model has following beneficial effect: the utility model discloses a hall switch, including casing, circuit board, outer cover and the like spare, the casing is connected with outer cover movably, is equipped with cavity and shielding recess in casing respectively, is equipped with the limit groove on the reinforcing rib of the cavity bottom, is equipped with the sliding groove in both sides middle part, and the circuit board is placed in the limit groove through the sliding groove, and the heat dissipation hole of bottom is array type distribution, and the heat dissipation groove is established at the place of casing corresponding heat dissipation hole, and the outer cover is equipped with the vent, and the breathable plug enters the heat dissipation groove through the vent, and the electromagnetic shield piece is placed in the shielding recess. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the split structure schematic diagram of the utility model;

[0016] Figure 2 It is the casing component schematic diagram of the utility model;

[0017] Figure 3 It is the outer cover component schematic diagram of the utility model;

[0018] Figure 4 It is the use state schematic diagram of the utility model.

[0019] Fig. 1, casing;2, cavity;3, reinforcing rib;4, circuit board;5, shielding recess;6, heat dissipation hole;7, outer cover;8, sliding groove;9, heat dissipation groove;10, vent;11, breathable plug;12, lug;13, guide slope;14, casing top protrusion;15, bolt hole;16, outer cover hollow boss;30, limit groove;50, electromagnetic shield piece. DETAILED DESCRIPTION

[0020] The utility model makes further detailed explanation in combination with the drawings.

[0021] The utility model discloses a hall switch, like Figures 1-4As shown, including the shell 1, circuit board 4, cover 7 and other components, the shell 1 inside opening has a cavity 2 and shielding groove 5, cover 7 in the corresponding shielding groove 5 location is provided with a block 12, cover 7 and shell 1 between through buckle connection, buckle connection convenient and efficient, conducive to production maintenance and component replacement, reduce cost and increase productivity. Shell 1 top has a protrusion 14, protrusion 14 is provided with bolt hole 15, convenient fixed in various equipment, products.

[0022] The cavity 2 is used for placing the circuit board 4 with Hall element, the cavity 2 both sides middle part is equipped with sliding groove 8, the entrance end is also equipped with guide slope 13, at the same time, the cavity 2 bottom is equipped with three groups of reinforcing ribs 3, and the reinforcing ribs 3 is equipped with limiting groove 30, when installing circuit board 4, one end of circuit board 4 is placed on guide slope 13, push circuit board 4 smoothly into sliding groove 8 and fall into limiting groove 30, which simplifies the assembly process and avoids displacement caused by poor contact. When colliding or transporting, it can also maintain the integrity of the shell 1 structure and protect the internal elements.

[0023] The cavity 2 both sides bottom array type is equipped with heat dissipation hole 6, the shell 1 is equipped with heat dissipation groove 9 at the corresponding position, the cover 7 is opened vent 10, so that the air permeable plug 11 made of expanded polytetrafluoroethylene material enters the heat dissipation groove 9 through the vent 10. After the heat generated by the long time running of the Hall switch, the heat is gathered to the heat dissipation groove 9 through the heat dissipation hole 6, and the air permeable plug 11 adjusts the air circulation and exhaust gas, prevents the performance degradation of the element due to overheating, and prolongs the service life.

[0024] The shielding groove 5 is used for placing copper electromagnetic shielding sheet 50, and the shielding groove 5 and the cavity 2 are two independent chambers. Through such structure, the copper electromagnetic shielding sheet 50 can fully play its electromagnetic shielding function at a specific position, effectively block the influence of external environment on the circuit board 4, avoid its interference with the normal magnetic field induction and signal conversion work of Hall element, so as to ensure the accuracy and stability of Hall switch output signal.

[0025] The cover 7 is provided with an integral hollow boss 16, so that the wire harness can be orderly connected with the circuit board 4, which not only facilitates the wiring operation, but also makes the layout more regular and simple.

[0026] Working principle: the Hall switch works according to the Hall effect, the circuit board 4 with Hall element is placed in the cavity 2 of the shell 1, which is protected. During operation, the Hall element on the circuit board 4 generates heat, which is dissipated through the heat dissipation hole 6, preventing overheating from affecting performance and life.

[0027] When the external magnetic field changes, the Hall element quickly captures, and the effect generates a potential difference in the perpendicular magnetic field and the current direction, and is linearly related to the magnetic field intensity. When the external magnetic field intensity reaches the threshold value, the potential difference signal is amplified and shaped by the circuit board 4 circuit, and then transmitted outward through the wire harness connected with the hollow boss 16, realizing control or feedback. At the same time, the copper electromagnetic shielding sheet 50 in the shielding groove 5 shields external interference, ensures signal accuracy, and enables the Hall switch to operate stably in a complex electromagnetic environment.

[0028] The above only describes the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. within the design concept of the present application shall be included in the protection scope of the present application.

Claims

1. A Hall switch comprising a housing (1), a circuit board (4), an outer cover (7), characterized in that: The shell (1) is movably connected with the outer cover (7), the shell (1) is internally provided with a cavity (2) and a shielding groove (5), the bottom of the cavity (2) is provided with a reinforcing rib (3), the reinforcing rib (3) is provided with a limiting groove (30), the middle of the two sides of the cavity (2) is provided with a sliding groove (8), the circuit board (4) is placed at the limiting groove (30) after passing through the sliding groove (8); the bottom of the two sides of the cavity (2) is provided with a heat dissipation hole (6); the shell (1) is provided with a heat dissipation groove (9) at the corresponding position of the two sides of the heat dissipation hole (6); the outer cover (7) is provided with a ventilation opening (10) at the corresponding position of the heat dissipation groove (9); the air-permeable plug (11) enters the heat dissipation groove (9) through the ventilation opening (10); the electromagnetic shielding sheet (50) is placed in the shielding groove (5).

2. A Hall switch according to claim 1, characterized in that: The outer cover (7) is provided with a protrusion (12) at the position corresponding to the shielding groove (5), and the shell (1) and the outer cover (7) are connected through buckling.

3. A Hall switch according to claim 1, characterized in that: The reinforcing rib (3) is provided with three groups and is distributed at intervals.

4. A Hall switch according to claim 1, characterized in that: The inlet end of the sliding groove (8) is provided with a guide inclined surface (13).

5. A Hall effect switch according to claim 1, wherein: The heat dissipation holes (6) are arrayed on the bottom of the two sides of the cavity (2).

6. A Hall effect switch according to claim 1, wherein: The shell (1) has a protrusion (14) on the top, and the protrusion (14) is provided with a bolt hole (15).

7. A Hall effect switch as claimed in claim 1, characterized in that: The outer cover (7) is provided with an integrally formed hollow boss (16).

8. A Hall effect switch according to claim 1, wherein: The electromagnetic shielding sheet (50) is a copper sheet.

9. A Hall switch according to any one of claims 1-8, characterized in that: The material of the air-permeable plug (11) is expanded polytetrafluoroethylene.

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