Annular sheath assembly structure convenient for fixed installation of PCB

Abstract

The utility model discloses an annular sheath assembly structure convenient for fixed installation of a PCB, which relates to the technical field of sensors and comprises an upper sheath and a lower sheath arranged in the middle of a U-shaped installation rod, and the middle of the lower sheath is provided with a magnetic core placing groove used for installing a magnetic core provided with a notch. Sheath fixing grooves are symmetrically formed in the side face, located on one side of the magnetic core containing groove, of the U-shaped mounting rod, the upper end of the upper sheath is vertically and fixedly connected with sheath positioning blocks used for being inserted into the sheath fixing grooves, and the lower end of the upper sheath is vertically and fixedly connected with a fixing baffle used for being inserted into a notch of the magnetic core. The lower end of one side of the U-shaped mounting rod located on the outer side of the lower sheath is fixedly connected with an extension block used for being matched with installation of the PCB, and the side face of the U-shaped mounting rod located on the inner side of the lower sheath and the outer side of the extension block are both provided with shell fixing grooves. According to the utility model, through the cooperation between the sheath positioning block and the sheath fixing groove, the assembly of the upper sheath and the lower sheath is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, and more specifically to an annular sheath component structure which is convenient for fixing and installing a PCB. Background Art

[0002] At present, the circular magnetic core winding structure of the closed-loop Hall current sensor adopts a sheath structure installation method.

[0003] Its installation has the following defects:

[0004] 1. In the past, the design of the sheath used a screw-on structure on both sides, which complicated the installation process and easily caused the electric screwdriver to hit the PCB board and damage the components during the production process.

[0005] 2. The anti-vibration effect of the screw structure is average;

[0006] 3. The two ends of the winding wire are manually inserted into the PCB board, and the threading efficiency is low;

[0007] 4. Pull the two ends of the winding straight to the PCB board. If the assembly is pulled tight or too much force is used, the enameled wire will be damaged. After the product is filled with glue, under high and low temperature conditions, thermal expansion and contraction will cause a defective rate of about 0.2%.

[0008] Therefore, it is necessary to propose an annular sleeve assembly structure that is convenient for fixing and installing a PCB to solve the above problems. Utility Model Content

[0009] The utility model aims to solve the problem of inconvenient assembly of the upper sheath and the lower sheath in the prior art.

[0010] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0011] The invention discloses an annular sleeve component structure which is convenient for fixing and installing a PCB, comprising an upper sleeve and a lower sleeve arranged in the middle of a U-shaped mounting rod, wherein a magnetic core placement groove for installing a magnetic core provided with a notch is provided in the middle of the lower sleeve, and sleeve fixing grooves are symmetrically provided on the side surface of the U-shaped mounting rod located on one side of the magnetic core placement groove, a sleeve positioning block for being inserted into the sleeve fixing groove is vertically fixedly connected to the upper end of the upper sleeve, a fixing baffle for being inserted into the notch of the magnetic core is vertically fixedly connected to the lower end of the upper sleeve, an extension block for cooperating with the installation of a PCB board is fixedly connected to the lower end of one side of the U-shaped mounting rod located on the outer side of the lower sleeve, and a shell fixing groove is provided on the side surface of the U-shaped mounting rod located on the inner side of the lower sleeve and on the outer side of the extension block.

[0012] Furthermore, the lower end surface of the extension block is flush with the lower end surface of the U-shaped mounting rod, and a distance for coil winding is reserved between the lower end surface of the extension block and the lower end surface of the lower sheath.

[0013] Furthermore, a fixing pin installation hole for the fixing pin to pass through is provided on the extension block, and the fixing pin passes through the fixing pin installation hole and is welded on the PCB board.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model sets the U-shaped mounting rod and the sheath as a whole, realizing an automated welding process; the two ends of the winding are wound around the sheath at the nearest position, avoiding the quality problem of wire breakage, and the quality is guaranteed. At the same time, the cooperation between the sheath positioning block and the sheath fixing groove facilitates the assembly of the upper sheath and the lower sheath.

[0016] 2. The utility model adopts the method of setting a U-shaped mounting rod on one side, which increases the effective winding distance. Under the condition of the same number of turns, the wire diameter can be thickened, the internal resistance can be reduced, and the electrical performance can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional exploded schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a three-dimensional assembly schematic diagram of the structure of the utility model.

[0019] Figure numerals: 1, upper sheath; 2, lower sheath; 3, sheath positioning block; 4, fixed baffle; 5, magnetic core placement groove; 6, U-shaped mounting rod; 7, shell fixing groove; 8, sheath fixing groove; 9, extension block; 10 fixing pin mounting hole; 11, magnetic core; 12, fixing pin; 13, PCB board. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-2The U-shaped mounting rod 6 is integrally formed with the lower sleeve 2, and a magnetic core placement groove 5 for installing a magnetic core 11 with a notch is provided in the middle of the lower sleeve 2. The side of the U-shaped mounting rod 6 located on one side of the magnetic core placement groove 5 is symmetrically provided with a sleeve fixing groove 8. The upper end of the upper sleeve 1 is vertically fixedly connected with a sleeve positioning block 3 for being inserted into the sleeve fixing groove 8, and the lower end of the upper sleeve 1 is vertically fixedly connected with a fixing baffle 4 for being inserted into the notch of the magnetic core 11, so as to limit the magnetic core 11. The lower end of one side of the U-shaped mounting rod 6 located on the outer side of the lower sleeve 2 is fixedly connected with an extension block 9 for cooperating with the installation of the PCB board 13. The side of the U-shaped mounting rod 6 located on the inner side of the lower sleeve 2 and the outer side of the extension block 9 are both provided with a shell fixing groove 7 for accurate positioning with the shell.

[0022] Specifically, the lower end surface of the extension block 9 is flush with the lower end surface of the U-shaped mounting rod 6, which facilitates the stable installation of the sheath assembly, and a distance for coil winding is reserved between the lower end surface of the extension block 9 and the lower end surface of the lower sheath 2.

[0023] Specifically, a fixing needle mounting hole 10 for the fixing needle 12 to pass through is opened on the extension block 9. The fixing needle mounting hole 10 is used for the fixing needle 12 to pass through, and then the fixing needle mounting hole 10 is welded to the PCB board 13 to achieve the connection between the sheath and the PCB board 13.

[0024] Installation process: first, install the magnetic core 11 into the magnetic core placement groove 5, then insert the sheath positioning block 3 and the fixed baffle 4 into the corresponding sheath fixing groove 8, install the upper sheath 1 in the lower sheath 2, and then insert the fixing pin 12 into the fixing pin mounting hole 10, wind the above sheath assembly, tin the wire, and then install the sheath assembly on the PCB board 13, fix it after welding, and install the PCB board 13 and the sheath assembly into the shell. The lower sheath 2 is provided with two shell fixing grooves 7 to facilitate accurate positioning with the corresponding shell structure (not shown in the figure).

[0025] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. An annular sheath assembly structure that is convenient for fixing and installing a PCB, characterized in that: The invention comprises an upper sleeve and a lower sleeve arranged in the middle part of a U-shaped mounting rod, a magnetic core placement groove for installing a magnetic core provided with a notch is provided in the middle part of the lower sleeve, a sleeve fixing groove is symmetrically provided on the side surface of the U-shaped mounting rod located on one side of the magnetic core placement groove, a sleeve positioning block for being plugged into the sleeve fixing groove is vertically fixedly connected to the upper end of the upper sleeve, a fixing baffle for being plugged into the notch of the magnetic core is vertically fixedly connected to the lower end of the upper sleeve, an extension block for cooperating with the installation of a PCB board is fixedly connected to the lower end of one side of the U-shaped mounting rod located on the outer side of the lower sleeve, and a shell fixing groove is provided on the side surface of the U-shaped mounting rod located on the inner side of the lower sleeve and on the outer side of the extension block.

2. The annular sheath assembly structure for facilitating fixed installation of a PCB according to claim 1, characterized in that: The lower end surface of the extension block is flush with the lower end surface of the U-shaped mounting rod, and a distance for coil winding is reserved between the lower end surface of the extension block and the lower end surface of the lower sheath.

3. The annular sheath assembly structure for facilitating fixed installation of a PCB according to claim 1, characterized in that: The extension block is provided with a fixing pin installation hole for the fixing pin to pass through, and the fixing pin passes through the fixing pin installation hole and is welded on the PCB board.

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