CN114071875A - Fixing device and shielding assembly - Google Patents

Abstract

The fixing device comprises a fitting bottom and at least two elastic arms, wherein the fitting bottom is used for being fitted on a plate and is provided with two opposite sides, the elastic arms are provided with fixing parts, and the elastic arms are stressed to deform in the process that a to-be-fixed part is inserted towards the direction of the fitting bottom; after the to-be-fixed piece is inserted in place, the elastic arms are integrally rebounded, the fixing part of at least one elastic arm is abutted against the to-be-fixed piece under the action of rebounding force, and the fixing part of at least one elastic arm is clamped and locked on the to-be-fixed piece. The assembly alignment is easier, and the assembly alignment device has obvious feedback feeling, so that an operator can know that the assembly positioning is finished without visual inspection; moreover, when the positioning is correct, the elastic arm is used for continuously interfering and pressing the to-be-fixed piece, and the conduction requirement can be met at the same time.

Description

Fixing device and shielding assembly

Technical Field

The present disclosure relates to the field of electronic device interior accessory technology, and more particularly, to a fixing device and a shield assembly.

Background

In the conventional electronic device, such as a notebook computer, in the assembly of a Printed Circuit Board (PCB) as a main Board of the notebook computer, because of the Radio Frequency (RF) requirement, it is necessary to perform shielding process for Double Data Rate (DDR) SDRAM and Random Access Memory (RAM) to avoid signal interference, meanwhile, it is necessary to have the conduction function, the shielding interference is covered by Stainless steel (Stainless steel) and uses Surface Mounted Technology (SMT) spring as the assembly and fixing device, however, the conventional common SMT spring plate needs to be accurately aligned during assembly operation, and if the assembly is misplaced carelessly or the assembly height is not pressed to be positioned, the assembly error is difficult to find visually due to lack of sufficient feedback, so that the problem of failure of a shielding function or interference of shielding other parts is caused.

Disclosure of Invention

In view of this, the present disclosure first provides a fixing device, and the technical solution is as follows.

A fixation device, comprising:

the attaching bottom is used for being attached to the plate and is provided with two opposite sides; and

at least two elastic arms having a fixing portion;

during the process that the to-be-fixed piece is inserted towards the direction of the attaching bottom, the elastic arm is stressed integrally to deform; after the to-be-fixed piece is inserted in place, the elastic arms are integrally rebounded, the fixing part of at least one elastic arm is abutted against the to-be-fixed piece under the action of rebounding force, and the fixing part of at least one elastic arm is clamped and locked on the to-be-fixed piece.

In an implementation manner, the elastic arm includes a first bending section and a second bending section, the first bending section is bent and extended obliquely upward from one side of the attaching bottom toward the other side of the attaching bottom, the second bending section is bent and extended obliquely upward from one end of the first bending section away from the attaching bottom toward the opposite direction of the first bending section, and a portion of the first bending section connected to the second bending section forms the fixing portion.

In an implementation manner, one end of the second bending section, which is far away from the first bending section, is folded back to form a folded section, and the folded section is attached to the second bending section.

In an embodiment, the at least two elastic arms are located on the same side of the fitting bottom.

In an embodiment, the at least two elastic arms are divided into two groups, and the two groups of elastic arms are respectively located at two sides of the attaching bottom.

In an embodiment, the two sets of elastic arms have an intersection portion in a projection of one set of elastic arms to the other set of elastic arms in a normal state.

In an embodiment, the at least two elastic arms are spaced apart in a length direction of the fitting bottom.

In an embodiment, an included angle α is formed between the first bending section and the attaching bottom, and α is 40 ° to 60 °.

In an embodiment, an included angle β is formed between the second bending section and the first bending section, and β is 80 ° to 120 °.

According to another aspect of the present disclosure, a shielding assembly is provided.

A shield assembly comprising a shield having an aperture therein and a securing device, the securing device comprising:

the attaching bottom is used for being attached to the plate and is provided with two opposite sides; and

at least two elastic arms having a fixing portion;

in the process that the shielding cover is inserted towards the direction of the attaching bottom, the elastic arm is stressed integrally to deform; after the shielding cover is inserted in place, the elastic arms are integrally rebounded, at least one fixing part of each elastic arm is abutted against the shielding cover under the action of rebounding force, and the fixing part of each elastic arm is clamped with the corresponding opening hole to lock and fix the shielding cover.

The beneficial effects that this disclosure has are as follows:

because the fixing device locks the to-be-fixed piece by utilizing the bending elastic fit abutting and clamping modes of the SMT elastic piece, the assembly alignment is easier, the to-be-fixed piece can be guided and corrected to be positioned in the correct horizontal direction along the SMT elastic piece without manually and accurately aiming at the position, and the to-be-fixed piece is buckled by utilizing the clamping function to limit the height, so that the fixing device has obvious feedback feeling, and an operator can know that the assembly positioning is finished without visual inspection; moreover, when the positioning is correct, the elastic arm is used for continuously interfering and pressing the to-be-fixed piece, and the conduction requirement can be met at the same time.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:

in the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

FIG. 1 illustrates a perspective view of a fixation device according to one embodiment of the present disclosure;

FIG. 2 shows a front view of the fixture of FIG. 1;

FIG. 3 illustrates a perspective view of a fixation device according to another embodiment of the present disclosure;

FIG. 4 shows a front view of the fixture of FIG. 3;

FIG. 5 illustrates a schematic view of a state of use of a shield assembly according to an embodiment of the present disclosure;

FIG. 6 shows an enlarged view of portion A of FIG. 5;

FIG. 7 shows an enlarged view of section B of FIG. 5;

FIG. 8 shows a top view corresponding to FIG. 5;

FIG. 9 shows a cross-sectional view A-A of FIG. 8;

FIG. 10 shows a cross-sectional view B-B of FIG. 8;

FIG. 11 illustrates a shield assembly flow diagram (ready to insert the shield down) of one embodiment;

FIG. 12 illustrates a shield assembly flow diagram (during insertion down into the shield) for one embodiment;

FIG. 13 illustrates a shield assembly flow diagram (shield inserted in place) of an embodiment;

FIG. 14 illustrates a shield assembly flow diagram (ready to insert the shield down) of one embodiment;

fig. 15 illustrates a shield assembly flow diagram (shield inserted in place) of an embodiment.

The reference numbers in the figures illustrate:

100. a fixing device; 110. attaching the bottom; 120. a resilient arm; 1201. a fixed part; 121. a first bending section; 122. a second bending section; 123. a reverse-folding section; 200. a shield case; 201. opening a hole; 210. a hood top wall 210; 220. a cover sidewall 220; 300. a plate member.

Detailed Description

In order to make the objects, features and advantages of the present disclosure more apparent and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

In various electronic devices, a shield cover for shielding an external electromagnetic wave from an internal circuit and shielding an electromagnetic wave generated inside from being radiated to the outside is generally provided, and the shield cover is fixed to a PCB by a fixing device, and hereinafter, a fixing device for facilitating assembly and fixing of the shield cover will be mainly described in detail.

As shown in fig. 1 and fig. 2, the fixing device 100 includes a bonding bottom 110 and two elastic arms 120, the bonding bottom 110 is bonded on a plate 300 (when the plate 300 is applied to a notebook computer, mainly referred to as a PCB) by a Surface Mount Technology (SMT), the bonding bottom 110 has two opposite sides, the two elastic arms 120 are respectively located on two sides of the bonding bottom 110, the two elastic arms 120 have the same structure, for one of the elastic arms 120, the elastic arm 120 includes a first bending section 121 and a second bending section 122, the first bending section 121 is bent and extended obliquely upward from one side of the bonding bottom 110 toward the other side of the bonding bottom 110, the second bending section 122 is bent and extended obliquely upward from one end of the first bending section 121 away from the bonding bottom 110 toward the opposite direction of the first bending section 121, a connecting portion of the first bending section 121 and the second bending section 122 forms a fixing portion 1201, it is to be noted that, the term "upward" refers to the direction of the fixing device 100 relatively away from the plate 300 when the attaching base 110 is attached to the plate 300, which is referred to as "upward". When a to-be-fixed member (which is a shield cover 200 in the following description) is inserted toward the attaching bottom 110, the elastic arm 120 is deformed by the force applied to the whole; after the member to be fixed is inserted in place, the elastic arms 120 are rebounded integrally, the fixing portion 1201 of one of the elastic arms 120 abuts against the member to be fixed under the effect of the rebounding force, and the fixing portion 1201 of the other elastic arm 120 is locked and locked by the member to be fixed. Because the fixing device 100 locks the to-be-fixed piece by utilizing the bending elastic fit abutting and clamping modes of the SMT elastic piece, the assembly alignment is easier, the to-be-fixed piece can be guided and corrected to be positioned in the correct horizontal direction along the SMT elastic piece without manually and accurately aiming at the position, and the to-be-fixed piece is buckled by utilizing the clamping function to limit the height, so that the obvious feedback sense is realized, the assembly positioning completion can be known by operating personnel, and the visual inspection is not needed; moreover, when the positioning is correct, the elastic arm 120 is used to continuously interfere and press the member to be fixed, so as to achieve the conduction requirement.

Furthermore, one end of the second bending section 122, which is far away from the first bending section 121, is folded back to form a folded back section 123, and the folded back section 123 is attached to the second bending section 122. Based on the arrangement of the folded section 123, the safety of the fixing device 100 in use can be ensured, and the operator is prevented from being scratched when mounting the fixing device 100.

In the embodiment shown in fig. 1 and 2, two elastic arms 120 are respectively located on both sides of the attaching base 110 in the width direction (i.e., X direction), and are arranged at intervals in the length direction (i.e., Y direction) of the attaching base 110. Thus, the two elastic arms 120 can fix the to-be-fixed member at two different positions, and the stability of the fixing is ensured.

In addition, in the normal state of the two elastic arms 120, the projection of one elastic arm 120 to the direction of the other elastic arm 120 has an intersection. Thus, when the member to be fixed is disposed between the two elastic arms 120, the fixing portion 1201 of one of the elastic arms 120 is ensured to abut against the member to be fixed under the effect of the resilient force, and the fixing portion 1201 of the other elastic arm 120 is locked and locked by the member to be fixed.

In order to ensure that the elastic arm 120 has sufficient resilience to lock the member to be fixed firmly after the member to be fixed is inserted into the position, the first bending section 121 and the attaching bottom 110 form an included angle α, the included angle α is 50 °, the degree of the included angle α is not limited to 50 °, in an embodiment not shown, the included angle α may also be 40 °, 60 °, and so on, as long as the elastic arm 120 has sufficient elasticity.

Likewise, the angle β between the second bending section 122 and the first bending section 121 is 100 °, and the degree of the angle β is not limited to 100 °, and in the embodiment not shown, the angle may be 80 °, 120 °, and so on, as long as the elastic arm 120 has sufficient elasticity.

While the above embodiment is only provided with two elastic arms 120, it should be understood that the number of the elastic arms 120 is not limited to two, and may be three or more, as a modified structure of the above embodiment, three or more elastic arms 120 (i.e. at least two elastic arms 120) are divided into two groups, two groups of the elastic arms 120 are respectively located at two sides of the attaching base 110, in the structure shown in fig. 2, one group of the elastic arms 120 is located at the left side of the attaching base 110, and the other group of the elastic arms 120 is located at the right side of the attaching base 110, and during the insertion of the to-be-fixed member toward the attaching base 110, the whole elastic arms 120 are stressed to deform; after the to-be-fixed member is inserted in place, the elastic arm 120 is rebounded integrally, the fixing portion 1201 of at least one elastic arm 120 abuts against the to-be-fixed member under the action of the rebounding force, and the fixing portion 1201 of at least one elastic arm 120 is locked and locked by the to-be-fixed member.

As shown in fig. 3 and 4, in the fixing device 100 according to another embodiment of the present disclosure, two elastic arms 120 are located on the same side of the attaching bottom 110, and the rest of the structure is the same as that of the embodiment shown in fig. 1, which is not repeated herein. With the modified structure of the embodiment shown in fig. 3 and 4, the number of the elastic arms 120 is also not limited to two, and may be three or more.

As shown in fig. 5 to 10, the shielding assembly of the present disclosure includes a shielding case 200 and fixing devices 100, the shielding case 200 has openings 201, the positions and the number of the openings 201 may be determined according to the size of the shielding case 200, the fixing devices 100 may adopt a plurality of fixing devices 100 according to fixing requirements, and the plurality of fixing devices 100 include both the fixing device 100 in the embodiment shown in fig. 1 and the fixing device 100 in the embodiment shown in fig. 3.

Specifically, the board 300 has components to be masked, the masking is mainly performed by the shield can 200 including the can top wall 210 and the can side wall 220, the opening 201 is formed in the can side wall 220, the fixing device 100 capable of positioning the shield can 200 is disposed around the components to be masked, and the fixing device 100 is attached to the board 300 by the attaching bottom 110 by a surface mount technology (i.e., SMT). The shielding cage 200 includes a plurality of cage sidewalls 220, the plurality of cage sidewalls 220 extending downward from the periphery of the cage top wall 210 to enclose a cavity, wherein a portion of the cage sidewalls 220 are fixed by the fixing device 100 shown in fig. 1, and wherein a portion of the cage sidewalls 220 are fixed by the fixing device 100 shown in fig. 3.

Referring to fig. 11 to 15, when the shield can 200 is assembled, the shield can 200 is inserted toward the attaching bottom 110, during the process that the shield can 200 is inserted toward the attaching bottom 110, the elastic arms 120 are deformed by being stressed, after the shield can 200 is inserted in place, the elastic arms 120 rebound integrally, the fixing portion 1201 of at least one elastic arm 120 abuts against the shield can 200 (specifically, against the side wall 220 of the can) (as shown in fig. 15) under the effect of the rebound force, and the fixing portion 1201 of at least one elastic arm 120 is engaged with the opening 201 to lock the shield can 200 (as shown in fig. 13). For the case that the at least two elastic arms 120 are divided into two groups, the two groups are respectively located at two sides of the attaching bottom 110, after the assembly is completed, one group of elastic arms 120 locks the shielding cover 200 from the outer side of the cover sidewall 220, and the other group of elastic arms 120 locks the shielding cover 200 from the inner side of the cover sidewall 220. For the case that the at least two elastic arms 120 are located on the same side of the attaching bottom 110, after the assembly is completed, the at least two elastic arms 120 lock the shielding can 200 from the outer side of the can sidewall 220.

It can be seen from above-mentioned assembling process that the fixing device of this disclosure can not only simplify and cover the equipment procedure, and the effectual equipment operation that saves reduces the probability of doing over again to can reduce and cover the risk that the function became invalid, specific advantage is as follows:

1. the assembly is simplified, and the working hours are saved;

2. the assembly error rate is reduced, and the rework times are reduced;

3. reducing the risk of assembly errors so that interference causes damage to surrounding parts;

4. the failure of the shielding function is reduced, and the risk that the information interference cannot be effectively shielded is avoided.

In the description of the present disclosure, it is to be understood that the orientation or positional relationship indicated by the orientation terms is generally based on the orientation or positional relationship shown in the drawings, and is for convenience only to facilitate the description of the present disclosure and to simplify the description, and in the case of not having been stated to the contrary, these orientation terms are not intended to indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be taken as limiting the scope of the present disclosure; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the disclosure described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

The present disclosure has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the present disclosure to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present disclosure is not limited to the embodiments described above, and that many variations and modifications may be made in light of the teaching of the present disclosure, all of which fall within the scope of the claimed disclosure. The scope of the disclosure is defined by the appended claims and equivalents thereof.

Claims (10)

1. A fixation device, comprising:

the attaching bottom is used for being attached to the plate and is provided with two opposite sides; and

at least two elastic arms having a fixing portion;

during the process that the to-be-fixed piece is inserted towards the direction of the attaching bottom, the elastic arm is stressed integrally to deform; after the to-be-fixed piece is inserted in place, the elastic arms are integrally rebounded, the fixing part of at least one elastic arm is abutted against the to-be-fixed piece under the action of rebounding force, and the fixing part of at least one elastic arm is clamped and locked on the to-be-fixed piece.

2. The fixing device according to claim 1, wherein the elastic arm includes a first bending section and a second bending section, the first bending section extends from one side of the attaching bottom to the other side of the attaching bottom in an obliquely upward bending manner, the second bending section extends from one end of the first bending section away from the attaching bottom in an obliquely upward bending manner in an opposite direction to the first bending section, and a portion of the first bending section connected to the second bending section forms the fixing portion.

3. The fixing device according to claim 2, wherein a folded section is folded back on one end of the second folded section away from the first folded section, and the folded section is attached to the second folded section.

4. A fixation device as claimed in claim 3, wherein the at least two resilient arms are located on the same side of the conformable base.

5. The securing device according to claim 3, wherein the at least two resilient arms are divided into two groups, the two groups being located on either side of the attachment base.

6. A fixation device as claimed in claim 5, wherein the two sets of resilient arms have, in a normal state, an intersection in a projection of one set of resilient arms in the direction of the other set of resilient arms.

7. A fastening device according to claim 4 or 5, wherein the at least two resilient arms are spaced apart along the length of the conformable base.

8. A fixing device according to claim 4 or 5, wherein the first bending section and the attaching bottom have an included angle α, and α is 40 ° to 60 °.

9. The fastening device of claim 8, wherein the second bending section and the first bending section form an included angle β, and β is 80 ° to 120 °.

10. A shield assembly comprising a shield having an opening therein and a securing device, the securing device comprising:

the attaching bottom is used for being attached to the plate and is provided with two opposite sides; and

at least two elastic arms having a fixing portion;

in the process that the shielding cover is inserted towards the direction of the attaching bottom, the elastic arm is stressed integrally to deform; after the shielding cover is inserted in place, the elastic arms are integrally rebounded, at least one fixing part of each elastic arm is abutted against the shielding cover under the action of rebounding force, and the fixing part of each elastic arm is clamped with the corresponding opening hole to lock and fix the shielding cover.

Images