Grounding structure for EMB controller circuit board

Abstract

The utility model discloses a grounding structure for an EMB controller circuit board, which comprises a metal wire braided cylinder fixed on the outer wall of one side of a circuit board body, a metal support fixed on the outer wall of the bottom of the metal wire braided cylinder, the circuit board body fixed on the inner wall of the metal support, and an insulating guide sleeve fixed on the inner wall of the metal support. The metal wire woven cylinder is slidably connected to the inner wall of the insulating guide sleeve, and first connectors are fixed to the two ends of the metal wire woven cylinder respectively. According to the utility model, the required metal wire weaving cylinder can be shaped by adjusting the diameter, the number of strands and the weaving mode of the metal wires, and a certain amount of compression is kept between the circuit board body and the metal support, so that the circuit board body and the metal support are stably connected to be conducted, and the grounding function is realized; the vibration of the PCBA can be absorbed, the possibility of noise is reduced, meanwhile, the resistance of the metal wire woven cylinder can be made smaller, and the ECM performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit board grounding technical field especially relates to a grounding structure for EMB controller circuit board. BACKGROUND

[0002] Grounding is one of important means of inhibiting electromagnetic interference and improving EMC performance of brake product electronic equipment, and good grounding mode can improve the ability of inhibiting electromagnetic interference of product and reduce EMI emission of product to outside.

[0003] At present, grounding modes used on brake product mainly have three kinds: grounding PIN needle, grounding resistance of grounding PIN needle increases with PIN sectional area reduction, and grounding mode of grounding PIN needle has higher requirement (welding or pressure connection) to matching position of PCB; grounding spring, resistance is big (linear diameter-force-height direction tolerance), and contact is unreliable (spring head cut-off point and PCB-PAD contact point); grounding spring sheet, height direction tolerance is small.

[0004] Therefore, in order to overcome the defects of the prior art, a grounding structure for EMB controller circuit board is urgently needed to improve the grounding effect of the EMB controller circuit board. INVENTION CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a grounding structure for EMB controller circuit board.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] A grounding structure for EMB controller circuit board, comprising a metal wire braided cylinder fixed to one side outer wall of a circuit board body, a metal support fixed to the bottom outer wall of the metal wire braided cylinder, the circuit board body fixed to the inner wall of the metal support, an insulating guide sleeve fixed to the inner wall of the metal support, and the metal wire braided cylinder slidingly connected to the inner wall of the insulating guide sleeve.

[0008] As a further scheme of the utility model, the metal wire braided cylinder is respectively provided with a first connecting head at both ends, a first conductive plate fixed to the outer wall of the first connecting head, a first conductive connector fixed to the outer wall of the first conductive plate, and a metal support fixed to the opposite side outer wall of the first conductive plate.

[0009] As a further scheme of the utility model, the metal support is provided with a fixing ring fixed to the outer wall of the metal support, a plurality of clamping blocks fixed to the outer wall of the fixing ring, a clamping piece fixed to the outer wall of the clamping block through a screw, and the metal wire braided cylinder inserted into the opposite side outer walls of the clamping piece and the clamping block.

[0010] As a further scheme of the utility model, the clamping piece is provided with an insulating elastic pad fixed to the side outer wall of the clamping piece.

[0011] As a further scheme of the utility model: the metal wire braiding cylinder two ends are fixed with second connector respectively, second connector outer wall is fixed with second conductive plate, second conductive plate outer wall is fixed with second conductive connector, second conductive plate opposite side outer wall is fixed with spring.

[0012] As a further scheme of the utility model: the metal wire braiding cylinder outer wall is sleeved with limiting sleeve, and the limiting sleeve outer wall is fixed with a fixed block.

[0013] The utility model discloses the beneficial effects are:

[0014] 1. The metal wire braiding cylinder connects the circuit board body and the metal support, realizes the conduction of circuit board body and metal support, and the metal wire braiding cylinder is formed by the multiple metal wires through braiding and then by the shaping die compression molding, can be shaped the metal wire braiding cylinder required by adjusting the metal wire diameter, the metal wire count, the braiding mode, keeps a certain compression amount between the circuit board body and the metal support, thereby stably connects the conduction of circuit board body and metal support, realizes the grounding function, and simultaneously, due to the structure having the elasticity, can absorb the vibration of PCBA, reduces the possibility of noise, simultaneously makes the resistance of metal wire braiding cylinder smaller, improves ECM performance.

[0015] 2. The grounding structure can reduce the vibration of PCBA while meeting the grounding function, and the grounding structure is formed by multiple metal wires, is a nonlinear elastic body, is connected more stably, and the contact area of two parts connected above and below is large, when the distance between the two parts needing to be connected is large, compared with the grounding spring, when the grounding body material is same, the resistance of the grounding structure in the scheme can be smaller, according to the resistance law formula R = pL / S, the cross-sectional area S of the grounding body is more easily larger than the cross-sectional area of the grounding spring. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A front view structural schematic diagram of a grounding structure for an EMB controller circuit board is provided for the utility model;

[0017] Figure 2 A metal wire braiding cylinder structure schematic diagram of a grounding structure for an EMB controller circuit board is provided for the utility model;

[0018] Figure 3 An embodiment 2 structure schematic diagram of a grounding structure for an EMB controller circuit board is provided for the utility model;

[0019] Figure 4 A spring structure schematic diagram of a grounding structure for an EMB controller circuit board is provided for the utility model.

[0020] In the figure: 1-circuit board body, 2-wire braid cylinder, 3-metal support, 4-clamping block, 5-clamping piece, 6-fixing ring, 7-first connecting head, 8-first conductive plate, 9-second connecting head, 10-second conductive plate, 11-fixing block, 12-spring, 13-limiting sleeve, 14-first conductive connector, 15-second conductive connector, 16-insulating guide sleeve. DETAILED DESCRIPTION

[0021] The technical solutions of the patent will be further described in detail below in combination with specific embodiments.

[0022] The embodiments of the patent will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the patent, and cannot be understood as a limitation of the patent.

[0023] In the description of the patent, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the patent and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the patent.

[0024] In the description of the patent, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meanings of the above terms in the patent can be understood according to the specific circumstances.

[0025] Example 1: A grounding structure for an EMB controller circuit board, as shown in Figures 1-4 The wire braid cylinder 2 is fixed to one side of the outer wall of the circuit board body 1, the bottom outer wall of the wire braid cylinder 2 is fixed with a metal support 3, the circuit board body 1 is fixed to the inner wall of the metal support 3, the inner wall of the metal support 3 is fixed with an insulating guide sleeve 16, and the wire braid cylinder 2 is slidingly connected to the inner wall of the insulating guide sleeve 16.

[0026] The metal wire braiding cylinder 2 connects the circuit board body 1 and the metal support 3, realizes the conduction of the circuit board body 1 and the metal support 3, the metal wire braiding cylinder 2 is formed by braiding and then pressing by a shaping die, the required metal wire braiding cylinder 2 can be shaped by adjusting the diameter of the metal wire, the number of the metal wire strands and the braiding method, a certain compression amount is kept between the circuit board body 1 and the metal support 3, thereby stably connecting the conduction of the circuit board body 1 and the metal support 3, realizing the grounding function, meanwhile, due to the flexibility of the structure, the vibration of the PCBA can be absorbed, the possibility of noise reduction is reduced, meanwhile, the resistance of the metal wire braiding cylinder 2 can be made smaller, and the ECM performance is improved.

[0027] The grounding structure can meet the grounding function, meanwhile, the vibration of the PCBA can be reduced, the grounding structure is formed by winding multiple metal wires, is a nonlinear elastic body, the connection is more stable, the contact area with the two parts connected above and below is large, when the distance between the two parts needing to be connected is large, compared with the grounding spring, when the material of the grounding body is the same, the resistance of the grounding structure in the scheme can be made smaller, according to the resistance law formula R=ρL / S, the cross-sectional area S of the grounding body is easier to be made larger than the cross-sectional area of the grounding spring.

[0028] Working principle: the metal wire braiding cylinder 2 connects the circuit board body 1 and the metal support 3, realizes the conduction of the circuit board body 1 and the metal support 3, the metal wire braiding cylinder 2 is formed by braiding and then pressing by a shaping die, the required metal wire braiding cylinder 2 can be shaped by adjusting the diameter of the metal wire, the number of the metal wire strands and the braiding method, a certain compression amount is kept between the circuit board body 1 and the metal support 3, thereby stably connecting the conduction of the circuit board body 1 and the metal support 3, realizing the grounding function, meanwhile, due to the flexibility of the structure, the vibration of the PCBA can be absorbed, the possibility of noise reduction is reduced, meanwhile, the resistance of the metal wire braiding cylinder 2 can be made smaller, and the ECM performance is improved.

[0029] Embodiment 2: a grounding structure for an EMB controller circuit board, as shown in Figures 3-4 the metal wire braiding cylinder 2 is fixed with a first connecting head 7 at both ends, the first connecting head 7 is fixed with a first conductive plate 8 on the outer wall, the first conductive plate 8 is fixed with a first conductive connector 14 on the outer wall, and the first conductive plate 8 is fixed with a metal support 3 on the opposite side of the outer wall;

[0030] the metal support 3 is fixed with a fixing ring 6 on the outer wall, the fixing ring 6 is fixed with a plurality of clamping blocks 4 on the outer wall, the clamping blocks 4 are fixed with clamping pieces 5 on the outer wall through screws, and the metal wire braiding cylinder 2 is inserted into the opposite side of the outer wall of the clamping pieces 5 and the clamping blocks 4;

[0031] the clamping piece 5 is fixed with an insulating elastic pad on one side of the outer wall;

[0032] The metal wire braiding cylinder 2 is fixed with a second connecting head 9 at both ends, the outer wall of the second connecting head 9 is fixed with a second conductive plate 10, the outer wall of the second conductive plate 10 is fixed with a second conductive connector 15, and the opposite side of the outer wall of the second conductive plate 10 is fixed with a spring 12;

[0033] The metal wire braiding cylinder 2 is fixed with a second connecting head 9 at both ends, the outer wall of the second connecting head 9 is fixed with a second conductive plate 10, the outer wall of the second conductive plate 10 is fixed with a second conductive connector 15, and the opposite side of the outer wall of the second conductive plate 10 is fixed with a spring 12;

[0034] The metal wire braiding cylinder 2 is fixed with a second connecting head 9 at both ends, the outer wall of the second connecting head 9 is fixed with a second conductive plate 10, the outer wall of the second conductive plate 10 is fixed with a second conductive connector 15, and the opposite side of the outer wall of the second conductive plate 10 is fixed with a spring 12;

[0035] The metal wire braiding cylinder 2 is fixed with a second connecting head 9 at both ends, the outer wall of the second connecting head 9 is fixed with a second conductive plate 10, the outer wall of the second conductive plate 10 is fixed with a second conductive connector 15, and the opposite side of the outer wall of the second conductive plate 10 is fixed with a spring 12;

[0036] The metal wire braiding cylinder 2 is fixed with a second connecting head 9 at both ends, the outer wall of the second connecting head 9 is fixed with a second conductive plate 10, the outer wall of the second conductive plate 10 is fixed with a second conductive connector 15, and the opposite side of the outer wall of the second conductive plate 10 is fixed with a spring 12;

[0037] The metal wire braiding cylinder 2 is fixed with a second connecting head 9 at both ends, the outer wall of the second connecting head 9 is fixed with a second conductive plate 10, the outer wall of the second conductive plate 10 is fixed with a second conductive connector 15, and the opposite side of the outer wall of the second conductive plate 10 is fixed with a spring 12;

[0038] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A grounding structure for an EMB controller circuit board, comprising a metal wire braided cylinder (2) fixed to the outer wall of one side of the circuit board body (1), characterized in that, The metal wire braiding cylinder (2) is fixed with a metal support (3) on the outer wall of the bottom, the circuit board body (1) is fixed on the inner wall of the metal support (3), the inner wall of the metal support (3) is fixed with an insulating guide sleeve (16), and the metal wire braiding cylinder (2) is slidingly connected to the inner wall of the insulating guide sleeve (16).

2. A grounding structure for an EMB controller circuit board according to claim 1, wherein, The metal wire braiding cylinder (2) is fixed with a first connecting head (7) at two ends, the outer wall of the first connecting head (7) is fixed with a first conductive plate (8), the outer wall of the first conductive plate (8) is fixed with a first conductive connector (14), and the opposite side of the outer wall of the first conductive plate (8) is fixed with a metal support (3).

3. A grounding structure for an EMB controller circuit board according to claim 2, wherein, The outer wall of the metal support (3) is fixed with a fixing ring (6), the outer wall of the fixing ring (6) is fixed with a plurality of clamping blocks (4), the outer wall of the clamping block (4) is fixed with a clamping piece (5) through a screw, and the metal wire braiding cylinder (2) is inserted into the opposite side of the outer wall of the clamping piece (5) and the clamping block (4).

4. The grounding structure for an EMB controller circuit board of claim 3, wherein, The outer wall of the clamping piece (5) is fixed with an insulating elastic pad.

5. The grounding structure for an EMB controller circuit board of claim 3, wherein, The metal wire braiding cylinder (2) is fixed with a second connecting head (9) at two ends, the outer wall of the second connecting head (9) is fixed with a second conductive plate (10), the outer wall of the second conductive plate (10) is fixed with a second conductive connector (15), and the opposite side of the outer wall of the second conductive plate (10) is fixed with a spring (12).

6. A grounding structure for an EMB controller circuit board according to claim 5, wherein, The outer wall of the metal wire braiding cylinder (2) is sleeved with a limiting sleeve (13), and the outer wall of the limiting sleeve (13) is fixed with a fixing block (11).

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