CN210189582U - PCB fixing device - Google Patents

Abstract

The utility model belongs to the fixed field of PCB, concretely relates to PCB fixing device. The PCB fixing device comprises a bottom plate, a fixing component and an adhesion component, wherein the fixing component comprises a fixing piece and a magnetic piece arranged in the fixing piece, the fixing piece is configured to fix the PCB, and the magnetic piece can be adsorbed on the bottom plate; one end of the adhesion component is adhered to the fixing component, and the other end of the adhesion component is adhered to the bottom plate. The utility model provides a PCB fixing device can realize reliable and nimble fixed between PCB and the bottom plate through magnetic force, and simple structure is practical, and connects firmly, has saved connection spare parts such as rivet and flange nut, and the adhesion through the adhesion subassembly has further increased the adhesive force between fixed subassembly and the bottom plate, can effectively prevent to sideslip.

Description

PCB fixing device

Technical Field

The utility model relates to a PCB fixes the field, concretely relates to PCB fixing device.

Background

In the elevator or other industries, during the manufacturing, maintenance or assembly process of Printed Circuit Boards (PCBs), the PCBs are required to be fixed in advance, and then the PCBs are required to be maintained or assembled.

At present, the common rivet and the flange nut of PCB are locked, and because of the PCB kind is more, the size and the quantity diverse of the last fixed orifices of every PCB, consequently when using the rivet to fix, the kind and the quantity of connecting spare part are more such as required rivet to lead to the dismouting inconvenient, influence work efficiency.

SUMMERY OF THE UTILITY MODEL

Based on above, an object of the utility model is to provide a PCB fixing device to solve PCB fixing device under the prior art and connect spare part quantity, the many and inconvenient technical problem of dismouting of type.

To achieve the purpose, the utility model adopts the following technical proposal:

provided is a PCB fixing device, including:

a base plate;

the fixing assembly comprises a fixing piece and a magnetic piece arranged inside the fixing piece, the fixing piece is configured to fix the PCB, and the magnetic piece can be adsorbed to the bottom plate;

an adhesive member having one end adhered to the fixing member and the other end capable of being adhered to the base plate.

Preferably, the adhesive member includes a double-sided tape, one side of the double-sided tape is adhered to the fixing member, and the other side of the double-sided tape can be adhered to the bottom plate.

Preferably, the fixing member includes an elastic clamping portion and a magnetic member accommodating case connected to each other, and the elastic clamping portion is configured to be clamped with a fixing hole of the PCB to fix the PCB.

Preferably, the elastic clamping portion comprises an elastic fin and a supporting table which are connected, and the supporting table is connected to the magnetic piece accommodating shell.

Preferably, the elastic fin is provided in plurality, and the plurality of elastic fins are arranged around the circumference of the support table.

Preferably, a magnetic piece accommodating groove is formed in the magnetic piece accommodating shell, and the magnetic piece is arranged in the magnetic piece accommodating groove.

Preferably, the magnetic member and the side wall of the magnetic member accommodating groove are in interference fit.

Preferably, the magnetic member accommodating groove and the magnetic member are both cylindrical structures.

Preferably, the base plate is made of a ferromagnetic material.

Preferably, the magnetic member is a permanent magnet.

The utility model has the advantages that:

the PCB fixing device provided by the utility model can realize reliable and flexible fixation between the PCB and the bottom plate through magnetic force, has simple and practical structure and stable connection, saves connecting parts such as rivets, flange nuts and the like, is convenient to disassemble, and improves the installation efficiency; the adhesion force through the adhesion subassembly has further increased the adhesive force between fixing device and the bottom plate, can prevent effectively that fixing device from sideslipping, can bear great vibration strength.

Drawings

Fig. 1 is a schematic view of a fixing component and an adhering component of a PCB fixing device according to an embodiment of the present invention;

fig. 2 is a schematic view of a fixing member of a PCB fixing apparatus according to an embodiment of the present invention;

fig. 3 is an installation diagram of the PCB fixing device according to an embodiment of the present invention.

In the figure: 1. a base plate; 2. a fixing assembly; 21. a fixing member; 211. an elastic clamping part; 2111. an elastic fin; 2112. a support table; 212. a magnetic member accommodating case; 2121. a magnetic piece accommodating groove; 22. a magnetic member; 3. and adhering the assembly.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad embodiments of the invention. It should be further noted that, for convenience of description, only some structures, but not all structures, related to the embodiments of the present invention are shown in the drawings.

As shown in fig. 1 to 3, the present invention provides a PCB fixing apparatus, which includes a base plate 1, a fixing member 2, and an adhesion member 3. Wherein, bottom plate 1 is the basic component, and fixed subassembly 2 and adhesion subassembly 3 are fixed in on bottom plate 1 through magnetic force and adhesion, then the PCB joint is on fixed subassembly 2 to finally realize PCB's fixed.

Specifically, as shown in fig. 1, the fixing assembly 2 includes a fixing member 21 and a magnetic member 22, the magnetic member 22 being capable of being mounted in the fixing member 21, and a state in which the magnetic member 22 is not mounted in the fixing member 21 is shown in fig. 1. Wherein, the concrete structure of mounting 21 is seen in fig. 2, and it holds shell 212 including the elasticity joint portion 211 and the magnetic part that are connected, elasticity joint portion 211 be used for with the fixed orifices joint on the PCB, the magnetic part holds shell 212 and is used for holding magnetic part 22, and its bottom surface can laminate with adhesion subassembly 3.

The elastic clip portion 211 includes elastic fins 2111 and support bases 2112. The bottom of the support 2112 is connected to the magnetic element housing 212, and the top is connected to the flexible fins 2111 for transition and support. Specifically, the support table 2112 includes a cylindrical structure, the cylindrical structure is connected to the upper surface of the magnetic element accommodating case 212, a support column is fixedly disposed above the cylindrical structure, and the plurality of elastic fins 2111 are fixed to the top end of the support column and are circumferentially and uniformly arranged along the top end of the support column. The flexible fins 2111 are fin-shaped structures with the lower ends inclined outwards, and a longitudinal gap equal to the thickness of the PCB is reserved between the lower surfaces of the flexible fins 2111 and the upper surface of the cylindrical structure of the support table 2112. When the resilient fins 2111 are snapped into engagement with the PCB, the resilient fins 2111 resiliently deform inwardly through the fixing holes in the PCB and then return to a shape to effect the press-fitting of the PCB into the aforementioned longitudinal gap formed between the resilient fins 2111 and the support table 2112. Optionally, the number of resilient fins 2111 is 2-6 to make the snap fit more secure, while, for ease of processing, it is preferable that the number of resilient fins 2111 be 2.

As shown in fig. 2, the magnetic member housing 212 is a shell-like structure with an opening at the bottom, and has a top surface connected to the support table 2112, a bottom surface for attaching to the adhesive member 3, and the adhesive member 3 is further attached to the base plate 1. The magnetic piece accommodating shell 212 is internally provided with a magnetic piece accommodating groove 2121, the magnetic piece accommodating groove 2121 is used for accommodating the magnetic piece 22, when the magnetic piece 22 is installed in the magnetic piece accommodating groove 2121, the lower surface of the magnetic piece 22 is flush with the lower surface of the magnetic piece accommodating groove 2121, then the lower surfaces of the magnetic piece 22 and the magnetic piece accommodating groove 2121 are attached to the adhesion assembly 3, the magnetic piece 22 is adsorbed to the bottom plate 1, and the fixation of the whole fixing assembly 2 on the bottom plate 1 is realized. Alternatively, the magnetic element 22 is press-fitted into the magnetic element receiving groove 2121 by interference fit, or the magnetic element 22 may be mounted in the magnetic element receiving groove 2121 by bolting. Preferably, the magnetic element 22 is installed in the magnetic element accommodating groove 2121 by interference fit, and the installation and fastening degree is high by interference fit installation, and other parts are not needed, so that the installation process is convenient.

The magnetic member 22 is a main fixing component, the magnitude of the attraction force between the magnetic member 22 and the bottom plate 1 is directly related to the fixing effect of the PCB, and in order to ensure the attraction force between the magnetic member 22 and the bottom plate 1, the magnetic member 22 is a permanent magnet, and the manufacturing material thereof is optionally carbon steel, tungsten steel, chrome steel or cobalt steel, preferably, the manufacturing material of the magnetic member 22 is carbon steel. The cross-sectional shape of the magnetic member 22 may alternatively be circular, square, rectangular or other suitable shape, and for ease of processing, the magnetic member 22 is preferably provided in a cylindrical configuration, in which case its cross-sectional shape is circular. Accordingly, the cross-sectional shape of the magnetic element receiving groove 2121 may alternatively be circular, square, rectangular or other suitable shape, and the shape of the magnetic element receiving groove 2121 is preferably configured as a cylindrical structure.

The bottom plate 1 is a fixing substrate of the fixing assembly 2, and as can be seen from the above, the magnetic member 22 is attracted to the bottom plate 1 by magnetic force, and therefore, the bottom plate 1 is made of ferromagnetic material that can be attracted by magnetic force. Alternatively, the material of the bottom plate 1 is iron, cobalt, nickel or an alloy thereof, and the material of the bottom plate 1 is preferably iron in view of cost. In the field of elevator displays, the base plate 1 is a lining plate or a panel of the display, which is generally a galvanized plate with an iron material as a base.

The adhesion component 3 is a component with double-sided adhesion, is used for being installed between the bottom plate 1 and the fixed component 2, adheres to the lower surface of the fixed component 2 on one side, adheres to the surface of the bottom plate 1 on the other side, is used for increasing the adhesive force between the fixed component 2 and the bottom plate 1, and prevents the fixed component 2 from sideslipping on the bottom plate 1. To increase the adhesion, the adhesion assembly 3 is optionally a double-sided tape, preferably the adhesion assembly 3 is a 3M high-power double-sided tape from 3M company.

Due to the strong adhesion effect of the adhesion assembly 3, when the PCB fixing device and the whole PCB are subjected to large vibration or lateral shear force, the whole stability of the PCB fixing device can be ensured. And, the adhesion assembly 3 is low in cost, easy to prepare, can be prepared into different sizes or different shapes according to the PCB fixing device of different sizes flexibly, has made things convenient for the installation of PCB fixing device greatly.

The principle of the PCB fixing apparatus provided in the present embodiment will be described below with reference to the accompanying drawings.

In this embodiment, before fixing the PCB, the magnetic member 22 needs to be press-fitted into the magnetic member receiving groove 2121 in an interference manner, so as to ensure that the magnetic member 22 is flush with the lower surface of the magnetic member receiving shell 212, thereby forming the whole fixing assembly 2, and then the elastic fin 2111 of the fixing assembly 2 passes through the fixing hole on the PCB, so as to clamp the PCB between the elastic fin 2111 of the elastic clamping portion 211 and the supporting table 2112, thereby achieving the relative fixing of the fixing assembly 2 and the PCB. Because the quantity and the size of the fixed orifices on different PCBs are different, according to the quantity and the size of the fixed orifices, the fixed components 2 with corresponding specifications are required to be installed on each fixed orifice. Laminate the one side of adhesion subassembly 3 in the lower surface of each fixed subassembly 2, later place the whole that PCB and a plurality of fixed subassemblies 2 and a plurality of adhesion subassembly 3 are constituteed suitable mounted position on bottom plate 1, magnetism spare 22 among the fixed subassembly 2 adsorbs bottom plate 1, and adhesion subassembly 3 further increases the adhesive force simultaneously to prevent sideslipping, thereby realize PCB's final fixed.

In this embodiment, elasticity joint portion 211 simple structure, with the joint of PCB compact reliable, the magnetism piece 22 that has strong magnetic force simultaneously has guaranteed fixed effect to adhesion subassembly 3 has further increased the adhesive force, has prevented PCB and fixed subassembly 2 sideslip on bottom plate 1. Through the pertinence design of above-mentioned three aspect, the embodiment of the utility model provides a PCB fixing device can realize PCB's reliable fixed, and can be fixed in the optional position of bottom plate 1 according to the operating mode is nimble, need not to punch on bottom plate 1, has saved connecting fasteners such as rivet and flange nut to simple to operate, it is efficient.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A PCB fixture, comprising:

a base plate (1);

the fixing assembly (2), the fixing assembly (2) comprises a fixing piece (21) and a magnetic piece (22) arranged inside the fixing piece, the fixing piece (21) is configured to fix the PCB, and the magnetic piece (22) can be adsorbed to the bottom plate (1);

an adhesive component (3), wherein one end of the adhesive component (3) is adhered to the fixing component (2), and the other end of the adhesive component (3) can be adhered to the bottom plate (1).

2. A PCB fixation arrangement according to claim 1, wherein the adhesive member (3) comprises a double-sided adhesive tape, one side of which is adhered to the fixation member (2) and the other side of which is capable of being adhered to the base plate (1).

3. The PCB fixing device of claim 1, wherein the fixing member (21) comprises an elastic clamping portion (211) and a magnetic member accommodating shell (212) which are connected, and the elastic clamping portion (211) is configured to be clamped with a fixing hole of the PCB to fix the PCB.

4. The PCB fixing apparatus of claim 3, wherein the elastic clamping portion (211) comprises an elastic fin (2111) and a support table (2112) connected, the support table (2112) being connected to the magnetic member receiving case (212).

5. The PCB fixation device according to claim 4, wherein the elastic fin (2111) is provided in a plurality, the plurality of elastic fins (2111) being arranged around a circumference of the support stage (2112).

6. The PCB fixing apparatus of claim 3, wherein the magnetic member receiving case (212) is provided with a magnetic member receiving groove (2121), and the magnetic member (22) is disposed in the magnetic member receiving groove (2121).

7. The PCB fixture according to claim 6, wherein the magnetic member (22) is interference fitted with a sidewall of the magnetic member receiving groove (2121).

8. The PCB fixing apparatus of claim 7, wherein the magnetic member receiving groove (2121) and the magnetic member (22) are each of a cylindrical structure.

9. The PCB fixture according to claim 1, wherein the base plate (1) is made of ferromagnetic material.

10. The PCB fixture according to claim 1, wherein the magnetic member (22) is a permanent magnet.

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