Air-sealed current sensor mounting structure with square hole

Abstract

The utility model discloses an air-sealed current sensor mounting structure with square holes, which effectively improves the production efficiency and comprises a shell, a cover plate and a circuit board body, the middle parts of the shell and the cover plate are provided with the square holes, the outer lower side of the cover plate is provided with an annular sealing strip, the front side and the rear side of the cover plate are provided with first clamping plates, and the first clamping plates are provided with second clamping plates. The lower side of the square hole in the middle of the cover plate is fixedly connected with a first square sleeve, and the left side and the right side of the inner side wall of the first square sleeve are respectively provided with a second clamping groove. Compared with the prior art, long waiting time required by a glue pouring process is saved, through multi-point clamping and multi-point plane supporting, the circuit board body can be stably installed and fixed, the probability that the circuit board body is bent during use is reduced, the service life of the device is prolonged, and the tightness of fixation between the shell and the cover plate is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to current sensor technical field relates to a kind of empty seal current sensor mounting structure with square hole. BACKGROUND

[0002] At present, square hole closed loop hall current sensor generally adopts pouring glue process to seal, pouring (pouring glue) is that polyurethane pouring glue, silicone pouring glue, epoxy resin pouring glue is poured into the device with electronic components, circuit by equipment or manual mode, solidifies into excellent performance thermosetting polymer insulating material under normal temperature or heating condition, to achieve the purpose of bonding, sealing, pouring and coating protection;

[0003] But for the pouring glue process of square hole closed loop hall current sensor, there are the following shortcomings:

[0004] 1. pouring glue product needs to solidify more than 12 hours, process time is long;

[0005] 2. pouring glue product pin is easy to climb glue, so that the appearance of final product is poor;

[0006] 3. circuit board pin is easy to deform under the action of pouring glue, and the positioning size is not accurate due to its length;

[0007] 4. pouring glue product cost is high.

[0008] Therefore, a kind of empty seal current sensor mounting structure with square hole capable of improving the sealing performance of sensor is needed to replace pouring glue process and solve the above problems. INVENTION CONTENTS

[0009] In view of the above problems, the utility model provides a kind of empty seal current sensor mounting structure with square hole, and the problems in the prior art are well solved.

[0010] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0011] A kind of empty seal current sensor mounting structure with square hole, including shell, cover plate and circuit board body, the middle part of the shell and cover plate is provided with square hole, the lower side of the outer periphery of the cover plate is fixedly connected with annular sealing strip, the front and rear sides of the cover plate are provided with two first clamping plates for clamping cooperation with shell, the lower side of the square hole in the middle part of the cover plate is fixedly connected with first square sleeve, the left and right sides of the inner side wall of first square sleeve are each provided with second clamping groove for clamping cooperation with shell, the upper side of the circuit board body is in abutment with the bottom of the first square sleeve.

[0012] Preferably, the upper side of the cover plate is provided with a plurality of fixing needle positioning holes and a plurality of pin positioning holes, the lower side of each fixing needle positioning hole is communicated with a fixing needle fixing sleeve, the lower side of each pin positioning hole is communicated with a pin fixing sleeve, the upper side of the circuit board body is fixedly connected with a circuit board positioning needle at the position corresponding to each fixing needle positioning hole, the outer diameter of the circuit board positioning needle is matched with the inner diameter of the fixing needle positioning hole, and the upper side of the circuit board body is fixedly connected with a circuit board pin at the position corresponding to each pin positioning hole.

[0013] Preferably, the lower side of the fixing needle fixing sleeve and the lower side of the pin fixing sleeve are in the same plane as the lower side of the first square sleeve.

[0014] Preferably, the middle part of the first clamping plate is provided with a first clamping groove, the upper part of the outer side of the shell is provided with a clamping plate allowing slot at the position corresponding to each first clamping plate, and the inner part of each clamping plate allowing slot is fixedly connected with a first triangular clamping block matched with the first clamping groove.

[0015] Preferably, the upper side of the shell is provided with a second allowing slot matched with the annular sealing strip, the second allowing slot is in interference fit with the annular sealing strip, and the annular sealing strip and the second allowing slot cooperatively form a structure for sealing the inside of the shell and the cover plate.

[0016] Preferably, the upper side of the square hole in the middle part of the cover plate is communicated with a second square sleeve, and the left side and the right side of the upper part of the second square sleeve are fixedly connected with second triangular clamping blocks matched with the second clamping grooves.

[0017] Preferably, the inner side wall of the shell is fixedly connected with a plurality of supporting table surfaces, and the upper side of each supporting table surface is in abutment with the lower side of the circuit board.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The utility model has a plurality of first clamping plates and first triangular clamping blocks, a plurality of second clamping grooves and a plurality of second triangular clamping blocks, can increase the tightness between the shell and the cover plate through multi-point clamping, and can increase the sealing property between the shell and the cover plate.

[0020] 2. The utility model has a plurality of supporting points for supporting the circuit board body, can make the circuit board body more uniform in stress after installation, and further increase the service life of the device.

[0021] 3. The utility model discloses a plurality of ways increases the sealing between casing and cover plate, and can cancel the conventional glue filling process on the basis of guaranteeing the stability of the sealing between casing and cover plate, so that the waiting time of more than 12 hours of glue filling process is not needed, and production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the explosion structure schematic diagram of the utility model.

[0023] Figure 2 It is the structure schematic diagram of the utility model.

[0024] Figure 3 It is the bottom view angle schematic diagram of the cover plate in the utility model.

[0025] Figure 4 It is the bottom view of the cover plate in the utility model.

[0026] Figure 5 It is the structure schematic diagram of the casing in the utility model.

[0027] In the drawing: 1, casing 2, cover plate 3, circuit board body 4, square hole 5, annular sealing strip 6, first clamping plate 7, first square sleeve 8, second clamping groove 9, fixed needle positioning hole 10, lead positioning hole 11, fixed needle fixing sleeve 12, lead fixing sleeve 13, circuit board positioning needle 14, circuit board lead 15, first clamping groove 16, clamping plate let go of groove 17, first triangular clamping block 18, second let go of groove 19, second square sleeve 20, second triangular clamping block 21, support mesa. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0029] The drawings of the embodiments of the utility model will be combined below Figures 1-5 The specific implementation of the utility model will be further described in detail.

[0030] By Figures 1-5As shown, this utility model includes a housing 1, a cover plate 2, and a circuit board body 3. In order to facilitate the sealing of the circuit board body 3, a square hole 4 is provided in the middle of both the housing 1 and the cover plate 2. An annular sealing strip 5 is fixedly connected to the lower side of the outer periphery of the cover plate 2. Two first locking plates 6 are provided on the front and rear sides of the cover plate 2 for engaging with the housing 1. A first square sleeve 7 is fixedly connected to the lower side of the square hole 4 in the middle of the cover plate 2. A second locking groove 8 is provided on the left and right sides of the inner side wall of the first square sleeve 7 for engaging with the housing 1. The upper side of the circuit board body 3 abuts against the bottom of the first square sleeve 7.

[0031] It should be noted that the circuit board body 3 is a printed circuit board assembly (PCBA) used to connect the current sensor and related components. This is existing technology. This design has not made any modifications or improvements to the circuit and components, so it will not be described in detail here.

[0032] In use, the circuit board body 3 and the cover plate 2 can be fitted together first, and then the circuit board body 3 and the cover plate 2 can be installed together on the upper side of the housing 1. At this time, under the action of the first card plate 6 and the second card slot 8, the housing 1 and the cover plate 2 can be tightly connected and sealed, eliminating the glue pouring operation step, saving the 12 hours of waiting time required for the glue pouring process, and improving production efficiency.

[0033] Furthermore, by Figures 1-5 As shown, in order to ensure the stable installation and fixation of the circuit board body 3, the upper side of the cover plate 2 is provided with multiple fixing pin positioning holes 9 and multiple pin positioning holes 10. Each fixing pin positioning hole 9 is connected to a fixing pin fixing sleeve 11 at its lower side, and each pin positioning hole 10 is connected to a pin fixing sleeve 12 at its lower side. Circuit board positioning pins 13 are fixedly connected to the upper side of the circuit board body 3 at the position corresponding to each fixing pin positioning hole 9. The outer diameter of the circuit board positioning pin 13 is adapted to the inner diameter of the fixing pin positioning hole 9. Circuit board pins 14 are fixedly connected to the upper side of the circuit board body 3 at the position corresponding to each pin positioning hole 10. The outer diameter of the circuit board pin 14 is adapted to the inner diameter of the pin positioning hole 10.

[0034] When using the circuit board body 3, when installing it onto the cover plate 2, the circuit board positioning pin 13 can be aligned with the fixing pin positioning hole 9 on the cover plate 2, and the circuit board pin 14 can be aligned with the pin positioning hole 10 on the cover plate 2. This completes the installation of the circuit board body 3. Since the circuit board positioning pin 13 and the fixing pin positioning hole 9 on the cover plate 2, and the circuit board pin 14 and the pin positioning hole 10 on the cover plate 2 are both interference fits, the fixing pin positioning hole 9 and the pin positioning hole 10 can also be tightly sealed under the action of the fixing pin fixing sleeve 11 and the pin fixing sleeve 12.

[0035] Furthermore, byFigures 1-5 As shown, in order to increase the service life of the circuit board body 3, the lower side of the fixed needle fixing sleeve 11 and the lower side of the pin fixing sleeve 12 are in the same plane as the lower side of the first square sleeve 7;

[0036] In use, the upper side of the circuit board body 3 abuts against the lower side of the fixed needle fixing sleeve 11, the lower side of the pin fixing sleeve 12, and the lower side of the first square sleeve 7, so that the circuit board body 3 can be supported and positioned at multiple points, reducing the probability of bending of the circuit board body 3 due to uneven stress in use.

[0037] Further, as shown in the drawings, Figures 1-5 As shown, in order to increase the tightness of the fixed connection between the shell 1 and the cover plate 2, a first clamping groove 15 is formed in the middle of the first clamping plate 6, and a clamping plate accommodating groove 16 is formed on the upper side of the shell 1 corresponding to the position of each first clamping plate 6, and a first triangular clamping block 17 adapted to the first clamping groove 15 is fixedly connected inside each clamping plate accommodating groove 16;

[0038] Further, as shown in the drawings, Figures 1-5 As shown, in order to be able to multi-point clamping to increase the stability of sealing, a second accommodating groove 18 adapted to the annular sealing strip 5 is formed on the upper side of the shell 1, the second accommodating groove 18 is in interference fit with the annular sealing strip 5, and the annular sealing strip 5 and the second accommodating groove 18 cooperate to form a structure for sealing the inside of the shell 1 and the cover plate 2;

[0039] Further, as shown in the drawings, Figures 1-5 As shown, a second square sleeve 19 is in communication with the upper side of the square hole 4 in the middle of the cover plate 2, a second triangular clamping block 20 adapted to the second clamping groove 8 is fixedly connected to the left and right sides of the upper side of the second square sleeve 19, and the outer side of the second square sleeve 19 is in interference fit with the inner side of the first square sleeve 7;

[0040] In use, when the shell 1 and the cover plate 2 cooperate with each other, each first clamping plate 6 is located inside the clamping plate accommodating groove 16, at this time the first triangular clamping block 17 and the first clamping groove 15 cooperate with each other for clamping, the second triangular clamping block 20 and the second clamping groove 8 cooperate with each other for clamping, the annular sealing strip 5 and the second accommodating groove 18 are in interference fit for sealing, and the interference fit of the first square sleeve 7 and the second square sleeve 19 can seal between the two square holes 4;

[0041] It should be noted that the shell 1 and the cover plate 2 are both made of plastic material, and the positions corresponding to the interference fit and the clamping positions will all have a certain elastic deformation during installation, which facilitates combined installation and internal sealing.

[0042] Further, as shown in the drawings, Figures 1-5As shown, in order to increase the service life of the circuit board, the inner side wall of the shell 1 is fixedly connected with a plurality of support platforms 21, and the upper side of each support platform 21 is in abutment with the lower side of the circuit board.

[0043] In use, the support platform 21 is used to support the lower side of the circuit board body 3.

[0044] The utility model discloses novel structure, clever idea, simple and convenient operation, through this design effectively convenient to the sealing of circuit board body 3, cancelled the operation step of pouring glue, saved the long time waiting time needed in the pouring glue procedure, improved production efficiency, through the multi -point site clamping and the multi -point site plane support, can make circuit board body 3 installation fixed stable, reduce the probability that circuit board body 3 is bent when using, increase the service life of device, increase the compactness between shell 1 and cover plate 2 fixed.

[0045] Although the utility model has been explained in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can still be modified, or part of the technical features can be replaced, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A mounting structure for an airtight current sensor with a square hole, comprising a housing, a cover plate, and a circuit board body, characterized in that: Both the housing and the cover plate have square holes in the middle. An annular sealing strip is fixedly connected to the lower side of the outer periphery of the cover plate. Two first locking plates are provided on the front and rear sides of the cover plate for engaging with the housing. A first square sleeve is fixedly connected to the lower side of the square hole in the middle of the cover plate. A second locking groove is provided on the left and right sides of the inner sidewall of the first square sleeve for engaging with the housing. The upper side of the circuit board body abuts against the bottom of the first square sleeve.

2. The mounting structure of a sealed current sensor with a square hole according to claim 1, characterized in that: The upper side of the cover plate has multiple fixing pin positioning holes and multiple pin positioning holes. The lower side of each fixing pin positioning hole is connected to a fixing pin fixing sleeve, and the lower side of each pin positioning hole is connected to a pin fixing sleeve. The upper side of the circuit board body is fixedly connected to a circuit board positioning pin at the position corresponding to each fixing pin positioning hole. The outer diameter of the circuit board positioning pin is adapted to the inner diameter of the fixing pin positioning hole. The upper side of the circuit board body is fixedly connected to a circuit board pin at the position corresponding to each pin positioning hole. The outer diameter of the circuit board pin is adapted to the inner diameter of the pin positioning hole.

3. The mounting structure of a sealed current sensor with a square hole according to claim 2, characterized in that: The lower side of the fixing pin fixing sleeve and the lower side of the pin fixing sleeve are both on the same plane as the lower side of the first square sleeve.

4. The mounting structure of a sealed current sensor with a square hole according to claim 1, characterized in that: The first card plate has a first card slot in the middle, and the upper part of the outer side of the housing has a card plate clearance slot corresponding to the position of each first card plate. Each card plate clearance slot has a first triangular card block that is adapted to the first card slot.

5. The mounting structure of a sealed current sensor with a square hole according to claim 1, characterized in that: The upper side of the housing is provided with a second clearance groove that is adapted to the annular sealing strip. The second clearance groove is interference-fitted with the annular sealing strip, and the annular sealing strip and the second clearance groove cooperate with each other to form a structure that seals the inside of the housing and the cover plate.

6. The mounting structure of a sealed current sensor with a square hole according to claim 1, characterized in that: The upper side of the square hole in the middle of the cover plate is connected to a second square sleeve, and the left and right sides of the upper part of the second square sleeve are each fixedly connected to a second triangular locking block that matches the second slot.

7. The mounting structure of a sealed current sensor with a square hole according to claim 1, characterized in that: The inner wall of the housing is fixedly connected to multiple support platforms, and the upper side of each support platform abuts against the lower side of the circuit board.

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