CN218182019U

CN218182019U - Coil bracket component and pressure detection device applied by same

Info

Publication number: CN218182019U
Application number: CN202222404978.7U
Authority: CN
Inventors: 严芷晴
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-10
Filing date: 2022-09-10
Publication date: 2022-12-30
Anticipated expiration: 2032-09-10

Abstract

The coil bracket assembly and the pressure detection device using the same are characterized in that the framework comprises a shaft core, an upper baffle ring and a lower baffle ring which are arranged on the outer wall of the shaft core at intervals, the shaft core is hollow and provided with a middle channel, and an electric coil is arranged in a space between the upper baffle ring and the lower baffle ring; still be provided with the collar that the diameter is less than last fender ring on the axle core, thereby collar interval arrangement is formed with the annular groove between collar and last fender ring in the top of last fender ring, the locating piece that still is provided with in the annular groove, a side of control circuit board is the arc limit, the arc edge be provided with can with the bayonet socket of locating piece adaptation block, during the equipment, control circuit board utilizes the bayonet socket card to block piece and lets the arc limit of the relative one side of bayonet socket laminate to the groove diapire of annular groove. Still include pressure measurement, its characterized in that still includes coil bracket assembly, coil bracket assembly fixed connection just keep off the ring towards elastic diaphragm under on the last casing.

Description

Coil bracket component and pressure detection device applied by same

Technical Field

The invention relates to the technical field related to detection and control, in particular to a coil support assembly and a pressure detection device applied to the coil support assembly.

Background

Pressure measurement is the very commonly used component in various trades, for example use at domestic gas heater, smoke ventilator, new trend system or industry dust collector etc. can detect whether the output pressure of output reaches the emission requirement through pressure measurement, this is favorable to guaranteeing the emission of waste gas and improving combustion efficiency to can improve equipment safety in utilization. The utility model discloses a chinese utility model patent with publication number CN205027477U discloses a wind pressure micro-pressure sensor and electrical equipment thereof, which comprises an upper cover and a lower cover that are mutually jointed, wherein a wind pressure diaphragm is arranged in a wind pressure cavity enclosed by the upper cover and the lower cover, a support frame is arranged on the wind pressure diaphragm, a magnetic ring is fixed on the support frame, a magnetic ring accommodating cavity is arranged at the bottom of the lower cover, the magnetic ring can move up and down in the magnetic ring accommodating cavity, an elastic element is abutted between the bottom of the support frame and the bottom of the magnetic ring accommodating cavity, and a hollow inductance coil is sleeved outside the magnetic ring accommodating cavity; hollow inductance coils fixed mounting is in the coil mounting groove, the outside in coil mounting groove is located to the signal processing circuit board card, hollow inductance coils with the signal processing circuit board meets, thereby the signal processing circuit board is through receiving hollow inductance coils's signal detects out the change of wind pressure. However, in this sensor, the hollow inductance coil is a self-adhesive coil, and is adhered to the mounting groove of the lower cover by an adhesive, and the hollow inductance coil is easily adhered in place or is not firmly adhered, which not only affects the measurement accuracy, but also may cause sensor failure due to the falling of the hollow inductance coil during the installation and movement of the sensor. In addition, the signal processing circuit board only places the outside of coil mounting groove, the signal processing circuit board does not have fixed very easy pine to take off, the signal processing circuit board is connected in the welding form the rosin joint easily during hollow inductance coils's lead wire, lead wire welding accomplishes the back the signal processing circuit board pine takes off or leads to the lead wire disconnection problem easily when removing, and these can improve the sensor finished product defective rate greatly, cause the wasting of resources problem such as detection and rework.

Disclosure of Invention

Aiming at the technical problems, in order to reduce the problem of poor installation of the sensor and ensure the use stability and reliability of the detection device, the invention provides a coil bracket assembly, which comprises a framework, an electric coil and a control circuit board; the framework comprises a shaft core, an upper baffle ring and a lower baffle ring which are arranged on the outer wall of the shaft core at intervals, the shaft core is hollow and provided with a middle channel, and the electric coil is arranged in a space between the upper baffle ring and the lower baffle ring; still be provided with the diameter on the axle core and be less than go up the collar of fender ring, the collar interval arrange in thereby go up the top of fender ring be formed with the annular groove between collar and the last collar still be provided with the locating piece in the annular groove, a side of control circuit board is the arc limit, the arc edge be provided with can with the bayonet socket of locating piece adaptation block, during the equipment, control circuit board utilizes the bayonet socket blocks to the locating piece lets one side of the bayonet socket is relative the arc limit is laminated on the groove diapire of annular groove.

The bobbin is a supporting member of the entire coil support assembly, and can be used for mounting and fixing the electric coils and the control circuit board, and also can enable the coil support assembly to be mounted on the upper shell mentioned below.

The shaft core is of a hollow shaft structure and penetrates through the upper retaining ring, the lower retaining ring and the mounting ring, the middle channel of the shaft core serves as a moving space of the soft magnetic core, and the electric coil is directly wound on the wall body of the shaft core. Further, an inner side wall of the shaft core at one end of the mounting ring is provided with an internal thread for connecting with an adjusting stud mentioned below.

The upper retaining ring and the lower retaining ring are limiting components arranged on the shaft core at intervals, particularly the electric coil is wound on the shaft core, the upper retaining ring, the lower retaining ring and the shaft core form a wire wheel shape, the upper retaining ring and the lower retaining ring can well limit the winding range of the electric coil, and meanwhile, the electric coil is prevented from being wound well and is separated from the shaft core.

Wherein the mounting ring is a ring structure protruding from the shaft core for connecting the upper housing mentioned below and defining an axial mounting position of the control circuit board. Further, for the convenience of installation, the upper part of the installation ring is provided with a chamfer.

Wherein, the ring channel, the collar with go up the space that fender ring, axle core wall body combination formed, the tank bottom wall of ring channel is the axle lateral wall of axle core, the ring channel can do control circuit board provides installation space, go up and keep off the ring and let control circuit board and electric coil form certain interval space.

The positioning block is a protruding rib arranged in the annular groove and is a structure which can be matched with a bayonet of the control circuit board and used for limiting radial rotation of the control circuit board. During assembly, the top wall of the positioning block is tightly matched with the bottom wall of the bayonet of the control circuit board, so that the control circuit board is clamped in the annular groove

According to the technical scheme, compared with the prior art, the invention has the beneficial technical effects that: firstly, the upper retaining ring and the lower retaining ring are arranged on the shaft core, so that the electric coil is directly wound in the range limited by the shaft core, and the wound electric coil cannot be separated from the shaft core along the direction of the shaft core, thereby well solving the problem of poor installation of the electric coil in the prior art and ensuring the use effectiveness and stability of the detection device; secondly, by arranging the mounting ring and the annular groove, a mounting space is provided for the control circuit board, and a connection base is provided for connecting the coil support assembly to the upper shell, so that the assembly integrity is improved, and the mounting process is simplified; thirdly, the positioning block is arranged, so that the control circuit board can be oriented during installation, the outgoing line of the electric coil is aligned with the wiring position of the control circuit board, the welding operation of the outgoing line of the electric coil and the control circuit board is greatly facilitated, and the welding quality is improved; on the other hand can the chucking control circuit board is in the ring channel, effectively prevent control circuit board pine takes off, is favorable to the guarantee the lead-out wire of electric coil and control circuit board's stability of being connected.

The technical scheme can also be that the upper retaining ring is provided with wire outlet grooves communicated with the annular groove, the wire outlet grooves and the positioning blocks are arranged at intervals, the arc-shaped edge of the control circuit board is also provided with avoidance ports, and the avoidance ports correspond to the wire outlet grooves. The advantage that sets up like this is, when coiling the electric coil the initial position of lead-out wire can be injectd to the outlet groove, the lead-out wire can be followed the outer wall surface extension of axle core is favorable to reducing the bending of lead-out wire. And set up dodge the mouth and can reduce the problem that the arc limit of control circuit board pressed the lead-out wire is favorable to reducing the crushing of lead-out wire.

In order to facilitate winding of the electric coil, the lower sidewall body of the lower retaining ring is provided with a reinforcing rib, and the reinforcing rib is provided with a positioning groove. The positioning groove enables the framework and the winding machine to be positioned, and therefore consistency of winding of the coil is guaranteed.

The further technical scheme can also be that the control circuit board falls in the projection range of the lower retaining ring when viewed along the axial direction of the framework.

The coil support assembly has the advantages that the coil support assembly can be applied to a pressure detection device, the pressure detection device comprises an upper shell, a lower shell and an elastic membrane, the upper shell and the lower shell can be combined together, the elastic membrane can divide the space between the upper shell and the lower shell into an upper cavity and a lower cavity, an upper channel communicated with the upper cavity is arranged on the upper shell, a lower channel communicated with the lower cavity is arranged on the lower shell, the elastic membrane can deform and move in the space between the upper shell and the lower shell when pressure difference is generated between the upper cavity and the lower cavity, the coil support assembly is fixedly connected to the upper shell, and the lower retaining ring faces the elastic membrane; the flexible diaphragm can be driven to move back and forth in the middle channel of the shaft core when deformed, the electric coil responds to a moving signal of the flexible diaphragm and sends an induced signal to the control circuit board, and therefore the control circuit board can detect the pressure difference between the upper cavity and the lower cavity through the signal of the electric coil. Wherein, the soft magnetic core is easy to be magnetized and demagnetized, thus reducing the drift of the pressure measurement output value caused by remanence. In one application, the soft magnetic core can be made of soft magnetic ferrite.

Further technical scheme can also be, be provided with the mounting groove on going up the casing, be provided with connect the via hole on the diapire of mounting groove, connect the via hole edge and be provided with a plurality of buckle, the buckle can the lock arrive in the ring channel of coil bracket component, and the tip pressure of buckle is in thereby on the control circuit board with go up the fender ring and press from both sides tightly together control circuit board. Through the buckle can connect coil bracket component can further inject again control circuit board's position has guaranteed well pressure measurement device's stability in use.

The technical scheme is that the soft magnetic core assembly further comprises an adjusting stud and a return spring, the adjusting stud is adjustably arranged in the shaft core, the return spring is arranged between the adjusting stud and the soft magnetic core, and the return spring can enable the soft magnetic core to move and return to one end, close to the lower retaining ring, of the middle channel. Furthermore, after the position of the adjusting stud is adjusted, the joint of the adjusting stud and the shaft core is coated with sealant, the sealant is used for limiting the position of the adjusting stud on one hand, and is used for preventing the adjusting stud from being moved when the pressure detection device is carried or installed, and on the other hand, the adjusting stud and the shaft core form a sealing structure.

The coil bracket component is arranged in the installation groove, the sealing ring is arranged between the lower retaining ring and the side wall of the installation groove, and thus the lower retaining ring and the upper shell form sealing connection to ensure the air tightness of the upper cavity; meanwhile, the radial position of the coil support assembly is also limited by the side wall of the mounting groove, and the detection stability of the pressure detection device is guaranteed.

Due to the characteristics and advantages, the coil support assembly and the pressure detection device applied to the coil support assembly can be applied to the coil support assembly.

Drawings

FIG. 1 is a schematic axial view of the coil support assembly;

FIG. 2 is an exploded view of the coil support assembly;

FIG. 3 is a schematic view of a front sectional view of the coil support assembly;

FIG. 4 is a schematic axial view of the skeleton;

fig. 5 is a schematic structural view of a cross section of the pressure detection device in a front view direction.

Detailed Description

The structure of the coil support assembly 5 and the pressure detecting device using the coil support assembly according to the present invention will be further described with reference to the accompanying drawings. Various implementation details disclosed below may be selectively applied or combined in one embodiment even if not directly related or synergistic in functional terms, except where expressly specified to belong to equivalent or alternative embodiments.

As shown in fig. 1 to 5, the pressure detection device includes an upper casing 1, a lower casing 2, and an elastic diaphragm 3, the upper casing 1 and the lower casing 2 can be combined together, and the elastic diaphragm 3 can divide a space between the upper casing 1 and the lower casing 2 into an upper cavity 10 and a lower cavity 20. The upper shell 1 is provided with an upper channel 11 communicated with the upper cavity 10, the lower shell 2 is provided with a lower channel 21 communicated with the lower cavity 20, and the elastic membrane 3 can deform and move in the space between the upper shell 1 and the lower shell 2 when pressure difference is generated between the upper cavity 10 and the lower cavity 20. The flexible diaphragm is characterized by further comprising a soft magnetic core 4 arranged on the flexible diaphragm 3, and the flexible diaphragm 3 can drive the soft magnetic core 4 to move back and forth when being deformed. The coil support assembly is characterized by further comprising a coil support assembly 5, wherein the coil support assembly 5 is fixedly connected to the upper shell 1 and faces the elastic diaphragm 3. Coil bracket component 5 includes skeleton 6, electric coil 7 and control circuit board 8 set up on the skeleton 6, skeleton 6 includes axle core 61, axle core 61 is the cavity form and has middle channel 60. When the elastic diaphragm 3 deforms, the soft magnetic core 4 can be driven to move back and forth in the middle channel 60 of the shaft core 61, the electric coil 7 responds to a moving signal of the soft magnetic core 4 and sends an induced signal to the control circuit board 8, and therefore the control circuit board 8 can detect the pressure difference between the upper cavity 10 and the lower cavity 20 through the signal of the electric coil 7.

In order to reduce the poor problem of electric coil 7 installation and guarantee detection device measurement stability, skeleton 6 still includes the interval arrange keep off ring 62 and keep off ring 63 down on the axle core 61 outer wall, the space installation between keeping off ring 62 and keeping off ring 63 down electric coil 7. Go up and keep off ring 62 and keep off ring 63 and be in as setting up spacing component on the axle core 61, with axle core 61 has constituteed line wheel form, can enough inject well the coiling scope of electric coil 7 also prevents to wind good the electric coil 7 is followed deviate from on the axle core 61, has solved the problem of electric coil 7 installation failure among the prior art well. In order to wind the electric coil 7, a reinforcing rib 631 is further disposed on a lower sidewall body of the lower baffle ring 63, and a positioning groove 632 is disposed on the reinforcing rib 631. The positioning groove 632 is used for positioning the framework 6 and the winding machine, so that the winding consistency of the coil is ensured.

Still be provided with the diameter on the axle core 61 and be less than go up the collar 64 that keeps off ring 62, collar 64 interval arrangement in thereby go up the top that keeps off ring 62 be formed with annular groove 65 between collar 64 and the last collar 62 still be provided with in the annular groove 65 and be locating piece 66, a side of control circuit board 8 is arc limit 81, be provided with on arc limit 81 can with the bayonet socket 82 of locating piece 66 adaptation block, during the equipment, control circuit board 8 utilizes bayonet socket 82 blocks to locating piece 66 lets the relative one side of bayonet socket 82 arc limit 81 is laminated on the groove diapire of annular groove 65. The mounting ring 64 is an annular structure protruding from the shaft core 61, and is combined with the upper baffle ring 62 and the shaft core 61 to form an annular groove 65, and a groove bottom wall of the annular groove 65 is a side wall of the shaft core 61. The positioning block 66 is a protruding rib arranged in the annular groove 65, and the positioning block 66 is tightly fitted with the bayonet 82 of the control circuit board 8 so as to clamp the control circuit board 8 in the annular groove 65. Seen along the axial direction of the framework 6, the control circuit board 8 and the upper retaining ring 62 are both located within the projection range of the lower retaining ring 63.

Further, in order to facilitate the installation of the control circuit board 8, in this embodiment, the positioning block 66 extends along the axial direction and two ends of the positioning block 66 are respectively connected to the installation ring 64 and the upper retaining ring 62, as shown in fig. 3 and 4, the positioning block 66 is step-shaped and includes a lower step 661 connected to the installation ring 64, an upper step 662 connected to the upper retaining ring 62, and a step connection surface 663 between the upper step 662 and the lower step 661. The distance between the connection surface 663 and the mounting ring 64 is greater than the thickness of the control circuit board 8. During installation, the bayonet 82 of the control circuit board 8 is easily radially positioned by the lower step 661, and the arc-shaped edge 81 slides into the annular groove 65; then the control circuit board 8 sinks along the positioning block 66, and the step surface of the upper step 662 is tightly matched with the bottom wall of the bayonet 82, so that the control circuit board 8 is clamped on the upper step 662, and the mounting structure is simple, effective and high in mounting efficiency.

As shown in fig. 1 to 3, the upper baffle ring 62 is provided with an outlet groove 67 communicated with the annular groove 65, the outlet groove 67 and the positioning block 66 are arranged at intervals, the arc-shaped edge 81 of the control circuit board 8 is further provided with an avoiding opening 83, and the avoiding opening 83 corresponds to the outlet groove 67. When the electric coil 7 is wound, the outgoing line groove 67 can be used as an outgoing line outgoing position, so that the winding starting position can be determined; on the other hand, through setting up dodge mouth 83, can reduce control circuit board 8's arc limit 81 presses the lead-out wire, is favorable to reducing the crushing of lead-out wire.

As shown in fig. 5, in order to allow the coil support assembly 5 to be stably installed on the upper casing 1, a mounting groove 12 is formed on the upper casing 1, a connecting through hole 13 is formed on the bottom wall of the mounting groove 12, a plurality of fasteners 14 extending to the mounting groove 12 are arranged at the edge of the connecting through hole 13, the fasteners 14 can be fastened into an annular groove 65 of the coil support assembly 5, and the end of the fastener 14 is pressed on the control circuit board 8 so as to clamp the control circuit board 8 together with the upper retaining ring 62.

Further, an annular groove 633 is further provided on the lower baffle ring 63, a sealing ring 93 is provided in the annular groove 633, and the sealing ring 93 is disposed between the lower baffle ring 61 and the side wall of the mounting groove 12 when the coil support assembly 5 is mounted to the mounting groove 12. Thus, the lower baffle ring 63 is in sealing connection with the side wall of the mounting groove 12, which is beneficial to ensuring the air tightness of the upper cavity 10; meanwhile, the radial position of the coil support assembly 5 is also limited by the side wall of the mounting groove 12, which is beneficial to ensuring the detection stability of the pressure detection device.

Further, as shown in fig. 5, in order to facilitate positioning when the coil support assembly 5 is installed, a guide post 15 is disposed on the bottom wall of the installation groove 12, and a positioning hole 84 is disposed on the control circuit board 8, wherein the guide post 15 can be inserted into the positioning hole 84 and guide the installation of the coil support assembly 5 into the installation groove 12 when the coil support assembly 5 is installed.

Further, the adjustable soft magnetic core further comprises an adjusting stud 91 and a return spring 92, the adjusting stud 91 is adjustably arranged in the shaft core 61, the return spring 92 is arranged between the adjusting stud 91 and the soft magnetic core 4, and the return spring 92 can enable the soft magnetic core 4 to move and return to one end, close to the lower baffle ring 61, of the middle channel 60; wherein the return spring 92 is made of stainless steel. In order to ensure the air tightness and the position stability of the adjusting stud 91 with the adjusted position, after the position of the adjusting stud 91 is adjusted, the joint of the adjusting stud 91 and the shaft core 61 is coated with a sealant.

Claims

1. A coil bracket component comprises a framework, an electric coil and a control circuit board; the transformer is characterized in that the framework comprises a shaft core, an upper retaining ring and a lower retaining ring which are arranged on the outer wall of the shaft core at intervals, the shaft core is hollow and is provided with a middle channel, and the electric coil is arranged in a space between the upper retaining ring and the lower retaining ring; still be provided with the diameter on the axle core and be less than go up the collar of fender ring, the collar interval arrange in thereby go up the top of fender ring be formed with the annular groove between collar and the last collar still be provided with the locating piece in the annular groove, a side of control circuit board is the arc limit, the arc edge be provided with can with the bayonet socket of locating piece adaptation block, during the equipment, control circuit board utilizes the bayonet socket blocks to the locating piece lets one side of the bayonet socket is relative the arc limit is laminated on the groove diapire of annular groove.

2. The coil brace assembly of claim 1, wherein the upper baffle ring is provided with an outlet groove in communication with the annular groove, and the outlet groove is spaced apart from the positioning block.

3. The coil bracket assembly according to claim 2, wherein the arc-shaped edge of the control circuit board is further provided with an avoiding opening, and the avoiding opening corresponds to the outlet groove.

4. The coil bracket assembly of claim 1, wherein the lower sidewall of the lower retaining ring has a rib disposed thereon, and wherein the rib has a detent disposed thereon.

5. The coil brace assembly of claim 1~4, wherein the shaft core is internally threaded on an inner sidewall body proximate to one end of the mounting ring.

6. The coil support assembly of claim 5, wherein the control circuit board is positioned within a projection of the lower baffle ring as viewed in an axial direction of the bobbin.

7. A pressure detecting device, comprising an upper housing, a lower housing and an elastic membrane, wherein the upper housing and the lower housing can be combined together, the elastic membrane can divide the space between the upper housing and the lower housing into an upper cavity and a lower cavity, an upper channel communicated with the upper cavity is arranged on the upper housing, a lower channel communicated with the lower cavity is arranged on the lower housing, and the elastic membrane can deform and move in the space between the upper housing and the lower housing when a pressure difference is generated between the upper cavity and the lower cavity, characterized in that the pressure detecting device further comprises a coil support assembly according to any one of claims 1~6, wherein the coil support assembly is fixedly connected to the upper housing and the lower retainer ring faces the elastic membrane; the flexible diaphragm can be driven to move back and forth in the middle channel of the shaft core when deformed, the electric coil responds to a moving signal of the flexible diaphragm and sends an induced signal to the control circuit board, and therefore the control circuit board can detect the pressure difference between the upper cavity and the lower cavity through the signal of the electric coil.

8. The pressure detecting device according to claim 7, wherein a mounting groove is formed on the upper housing, a connecting through hole is formed on a bottom wall of the mounting groove, a plurality of fasteners are arranged on edges of the connecting through hole, the fasteners can be fastened into the annular groove of the coil support assembly, and ends of the fasteners press against the control circuit board so as to clamp the control circuit board together with the upper retaining ring.

9. The pressure detection device of claim 8, further comprising an adjusting stud adjustably disposed in the shaft core and a return spring disposed between the adjusting stud and the soft magnetic core, wherein the return spring is capable of moving and returning the soft magnetic core to an end of the intermediate channel near the lower retaining ring.

10. The pressure detecting device according to claim 8, further comprising a sealing ring, wherein an annular groove is further disposed on the lower retaining ring, the sealing ring is disposed in the annular groove, and when the coil support assembly is mounted to the mounting groove, the sealing ring is disposed between the lower retaining ring and the side wall of the mounting groove.