CN101198237A - Circuit Board Fixing Mechanism - Google Patents

Abstract

A circuit board fixing mechanism is used for fixing a circuit board with a plurality of openings to a setting surface, and the same side of each opening is provided with a reduced clamping section.

Description

Circuit Board Fixing Mechanism

technical field

The invention relates to a circuit board fixing mechanism, in particular to a tool-free circuit board fixing mechanism.

Background technique

As for the fixing technology of the circuit board, the common method is to lock the screw, but when considering the convenience of assembly or disassembly, the method of snapping or buckling is mostly used. Taking the mainboard fixing technology applied in the server as an example, the traditional method is to preset a number of support columns with screw holes on the installation surface of the server chassis, and form a coplanar plane with each support column to support the mainboard, and then use The screws correspond to each support column to be locked one by one. This method can use the support column to raise the main board to provide electrical isolation from the chassis, and increase the air flow space at the bottom of the main board to improve the heat convection effect, but the alignment and use of tools for screw locking are extremely inconvenient, and also It is relatively time-consuming because of turning the locks or unscrewing the screws one by one.

In order to solve the inconvenience and time-consuming of the aforementioned locking screws, China Taiwan No. 580240 New Patent then proposes a motherboard fastening mechanism, as shown in Figure 1 and Figure 2A, which is pivotally connected to the edge of a motherboard 100 with a rotatable movable The buckle 140 of the mainboard 100 is provided with a fixing part 220 on the bottom plate of the chassis 200 on which the mainboard 100 is to be installed. A plurality of openings 110 are preset on the surface, and a corresponding number of support columns 210 are disposed on the bottom of the chassis 200 .

As shown in Fig. 2B and Fig. 2C, after the motherboard 100 is placed on the predetermined position on the bottom plate (that is, the support column 210 is used to guide and install the opening 110), a notch on the button handle 140 just straddles the When the handle 140 is rotated to a specific angle in a certain direction, the handle 140 will push the fixing member 220 on the bottom plate, so that the main board 100 will be displaced relative to each other so that the support column 210 and the opening The holes 110 are engaged with each other to restrict the degrees of freedom in the left, right and up and down directions, and at the same time, the degree of freedom in the front and rear directions is restricted by the handle 140 being completely fastened to the handle base 130 .

The above-mentioned patent case enables the motherboard to be assembled and disassembled in a tool-free manner through the matching design of the support column 210 and the opening 110, as well as the handle 140 and the handle seat 130. In addition to improving the convenience of the disassembly operation, In production and manufacturing, the production man-hours are further reduced, and the cost of screw parts is saved. However, a handle seat 130 and a handle 140 need to be arranged on the motherboard 100, which is extremely inconvenient for the stacking and storage of the motherboard, and non-standard motherboard production and assembly equipment needs to be added, and the handle 140 is easy to fall off, so This existing configuration is still inconvenient.

The above existing technology can save installation tools when used for motherboard installation, and can be installed quickly. However, the existing technology not only increases the manufacturing cost, but also inconvenient storage and material preparation, and the efficiency is also reduced. Moreover, when expanding to multi-chip motherboards There is also the problem of complex installation structure in the implementation of the circuit board, so it is necessary to develop a circuit board fixing mechanism with a simple structure and low cost technology.

Therefore, how to effectively solve the above-mentioned shortcomings of the prior art, and directly install a tool-free installation structure in a cabinet with limited space, so as to facilitate loading and unloading of circuit boards and storage and preparation of materials, is an urgent problem to be solved at present.

Contents of the invention

In view of the disadvantages of the background technology described above, the object of the present invention is to provide a circuit board fixing mechanism with simple structure and tool-free operation.

The object of the present invention is to also provide a circuit board fixing mechanism that does not require additional parts on the circuit board.

In order to achieve the above purpose and other purposes, the present invention provides a circuit board fixing mechanism, which is used to fix a circuit board with a plurality of openings on a setting surface, and each of the same sides of the openings is provided with a reduced The locking section, the fixing mechanism at least includes: a first positioning part, which is arranged on the circuit board; a plurality of supporting parts, which are arranged on the installation surface, for correspondingly passing through each of the openings, and have a The neck of the engaging section; and the elastic member, which is arranged on the setting surface, has a second positioning portion for correspondingly positioning to the first positioning portion when the engaging section is engaged with the neck.

In the above-mentioned circuit board fixing mechanism, the elastic member can be an elastic arm erected obliquely on the installation surface, and the second positioning portion is arranged at the top end of the elastic arm. In a preferred embodiment, the inclination direction of the elastic arm is the same as the direction in which the engaging section faces the opening. In another preferred embodiment, the inclined direction of the elastic arm is opposite to the direction in which the engaging section faces the opening. The second positioning part can be a protrusion corresponding to the height of the neck, and the first positioning part is an opening corresponding to the positioning of the protrusion, thereby providing a tight and not easy to loose positioning effect. Preferably, the protrusion The shape of the opening is rectangular, and chamfering can be provided on the edge of the protrusion to facilitate exiting from the opening.

The elastic member can also be a button standing on the setting surface and having the same height as the neck, and the second positioning part is the keycap of the button. The support member can be a support column erected on the setting surface, and the neck is adjacent to the top end. In a preferred embodiment, the width of the top end of the support member can be smaller than the width below the neck.

Therefore, in the circuit board fixing mechanism of the present invention, the collocation design of the support member and the opening is no different from the prior art, and it can also provide the limiting function of the degree of freedom of the circuit board relative to the two directions of the installation surface, and utilize the elasticity The design of the second positioning part of the component and the first positioning part provided on the circuit board can directly provide the limiting function of the degree of freedom between the circuit board and the installation surface in the third direction, based on the tool-free operation for disassembling the circuit board Under the basic purpose, the design of the present invention adopting elastic parts to provide elastic positioning is completely different from the button handle, button handle seat, and fixing parts of the prior art; at the same time, there is no need to install the button handle and button handle seat on the circuit board , thus saving parts cost and installation cost, and overcoming the problem of inconvenient stacking of circuit boards. In addition, because the design that provides the third direction limiting effect is the first positioning portion and the elastic member with the second positioning portion, and its setting position can be equivalent to replacing one of the supporting columns and openings in the prior art, so there is no Concerns about taking up extra space and relatively less parts are used, so the shortcomings of the prior art have been overcome.

Description of drawings

FIG. 1 is a schematic diagram of an existing motherboard clamping mechanism;

2A to 2C are enlarged schematic diagrams of the partial structure of the existing mainboard clamping mechanism;

Fig. 3 is an exploded schematic diagram of the structure of the first embodiment of the circuit board fixing mechanism of the present invention;

4A and 4B are schematic diagrams of the fixed state of the circuit board fixing mechanism of the present invention;

5A and FIG. 5B are schematic diagrams of the configuration position changes of the first positioning part of the circuit board fixing mechanism of the present invention; and

Fig. 6 is an exploded schematic diagram of the structure of the second embodiment of the circuit board fixing mechanism of the present invention.

Symbol Description

100 motherboard

110 hole

130 button handle seat

140 buckle handle

200 chassis

210 support column

220 fixing parts

3 setting surface

31 supports

311 neck

33, 33'elastic piece

331, 331' second positioning part

333 chamfer

333'spring

4 circuit boards

41 holes

411 engaging section

43 The first positioning department

Detailed ways

The implementation of the present invention is described below through specific specific examples, and those skilled in the art can easily understand other advantages and functions of the present invention from the content disclosed in this specification.

Please refer to FIG. 3 to FIG. 6, which are schematic diagrams of the embodiments of the circuit board fixing mechanism of the present invention. In the embodiments described later, the circuit board is described by taking the motherboard used in the server as an example. Therefore, the The fixed environment is the chassis bottom plate of the server. However, any fixing mechanism required to fix the circuit board on a setting surface is within the application scope of the present invention, and it is not only applied to the server as described in the embodiments. The fixed purpose of the main board is limited, and it shall be stated in advance.

first embodiment

The circuit board fixing mechanism shown in FIG. 3 is used to fix a circuit board 4 with a plurality of openings 41 on a setting surface 3. The circuit board 4 is an example of a main board used in a server. The setting surface 3 is then taken as an example of the chassis bottom plate of the server. In addition, the same side of each of the openings 41 is provided with a reduced engaging section 411, that is, the opening 41 with the engaging section 411 is equivalent to the whole. In a gourd hole. The circuit board fixing mechanism of the present invention includes a first positioning portion 43 disposed on the circuit board 4 , a plurality of supports 31 disposed on the setting surface 3 , and an elastic body disposed on the setting surface 3 and having a second positioning portion 331 . The member 33, through the corresponding engagement of each support member 31 with the engaging section 411, can provide two-direction degree of freedom restriction, and at the same time, use the second positioning part 331 of the elastic member 33 to be elastically positioned to the first positioning part 43 to provide Degree of freedom restriction in the third direction.

The support member 31 is erected on the installation surface 3 by pressing or locking, so as to pass through the opening 41 , and has a neck 311 for engaging with the engaging section 411 . Since the top of the support member 31 is for the opening 41 to be penetrated correspondingly, the size of the top of the support member 31 should match the opening (of course, it is actually a slightly smaller clearance fit state to facilitate penetration), At the same time, the size of the neck should match the engaging section 411 . Therefore, the top end of the support member 31 can be used to pass through the opening 411, and the circuit board 4 can be pushed so that the engaging section 411 on the side forming the remaining opening 41 is correspondingly engaged with the neck 311, so as to pass through the engaging section The engaging relationship between 411 and the neck portion 311 constitutes freedom restriction in two directions, such as up and down and left and right.

In this embodiment, the support member 31 is a circular support column erected on the installation surface 3, and the neck 311 is adjacent to the top, and the diameter width of the top is smaller than the diameter below the neck 311. That is, the support member 31 has a diameter below the neck portion 311 that is larger than the opening 41 for supporting the circuit board 4 . However, based on applying the same technical idea of the present invention, the support member 31 can also adopt a non-circular support column or support tube, and the height of the neck 311 can also be adjusted according to actual assembly needs, and even the number of necks 311 can also be adjusted. In response to the number of circuit boards 4 to be fixed, the width of the top of the support member 31 can also be the same as the width below the neck 311. The above changes can achieve the same positioning restriction effect in two directions, so it is absolutely necessary It is not limited to the embodiment shown in this example. Since the changes in the width or shape should be understood and implemented by those with ordinary knowledge in the technical field, it will not be further described in conjunction with the drawings.

The elastic member 33 is erected on the installation surface 3 by means of stamping or locking, and has a second positioning portion 331 on the top for corresponding positioning when the engaging section 411 is engaged with the neck 311. to the first positioning portion 43 . In this embodiment, the elastic member 33 is an elastic arm erected obliquely on the installation surface 3, which can be obliquely deformed by a downward external force, and the second positioning part 331 is arranged on the top end of the elastic arm and Corresponding to the projection of the height of the neck 311, relatively, the first positioning portion 43 is an opening corresponding to the positioning of the projection, all of which are rectangular in shape, and can be positioned on the second positioning portion 331 of the projection, for example. The edge is provided with a chamfer 333 to facilitate exiting the first positioning portion 43 , which is an opening. In addition, the inclination direction of the elastic member 33, taking the elastic arm as an example, is opposite to the direction in which the engaging section 411 faces the opening 41, that is, opposite to the direction in which the circuit board 4 is pushed and fixed. Of course, based on the consideration of space arrangement The inclination direction of the elastic member 33, taking the elastic arm as an example, can also be the same as the direction in which the engaging section 411 faces the opening 41, that is, it is the same as the installation and fixing direction for pushing the circuit board 4, which is not set by this embodiment. shown as a limit.

In this embodiment, three support members 31 and one elastic member 33 are arranged on average at the four corners of the installation surface 3 as an example. Therefore, when installing the circuit board 4, as shown in FIG. 41 is correspondingly pierced to each of the support members 31, so as to support the circuit board 4 through each of the support members 31, and at the same time use the weight of the circuit board 4 to press down the elastic member 33, because the elastic member 33 is installed obliquely on the set The elastic arm design on the surface 3 makes the elastic member 33 elastically deformed. Then, as shown in FIG. 4B , the circuit board 4 is pushed forward, so that the necks 311 of the supporting members 31 are correspondingly engaged with the engaging sections 411 of the openings 41. Meanwhile, since the circuit board 4 is for example The first positioning part 43 which is an opening has been moved to be located above the support member 33, so the support member 33 which is deformed under pressure can immediately return to its original position, so that the second positioning part 331 which is, for example, a protrusion is correspondingly upward. Through the first positioning portion 43 which is an opening, for example, the degree of freedom of the circuit board 4 in the front-back direction is also limited in positioning, so as to achieve the positioning effect of the circuit board 4 in three dimensions.

With regard to the fixed state of the circuit board 4 provided by the aforementioned fixing mechanism, it can be seen that when the fixed state of the circuit board 4 is to be removed, it is only necessary to press down the second positioning part 331, which is, for example, a bump, so as to disengage from the first positioning portion 331, which is, for example, an opening. The positioning part 43 can release the limitation of the degree of freedom of the circuit board 4 in the front and rear direction, so the circuit board 4 can be pulled back to make its engaging section 411 disengage from the neck 311 of the support member 31, and the circuit board 4 can be easily connected. Plate 4 is removed upwards. In addition, in order to provide the convenience of removing the circuit board 4, the first positioning portion 43 such as an opening can also be preset on the edge of the circuit board 4 to provide the convenience for the user to press. Changes should be understood and implemented by those skilled in the art, so no additional description is provided with accompanying drawings.

In addition to the aforementioned changes in the front and rear positions of the first positioning portion 43 and the support member 33, the number or arrangement positions of the openings 41 and the first positioning portion 43 corresponding to the support member 31 and the elastic member 33 can be determined according to the circuit board 4 Adjust the size or support strength, as shown in Figure 5A, four openings 41 are matched with a first positioning part 43 (because the supporting member 31 corresponds to the elastic member 33, only the circuit board 4 is drawn in the figure for simplicity and easy understanding ), or as shown in FIG. 5B , three openings 41 are matched with one first positioning portion 43 .

second embodiment

Fig. 6 is a drawing according to the second embodiment of the circuit board fixing mechanism of the present invention, wherein the same elements as those of the first embodiment are represented by the same or similar element symbols, and detailed descriptions are omitted to make the present case The instructions for are clearer and easier to understand.

The biggest difference between the second embodiment and the first embodiment is that the elastic member 33 of the first embodiment is an elastic arm with a bump on the top as an example, while the second embodiment is a button with a keycap .

As shown in the figure, the circuit board fixing mechanism shown in this embodiment also includes a first positioning portion 43 provided on the circuit board 4, a plurality of support members 31 provided on the installation surface 3, and a plurality of support members 31 arranged on the installation surface. 3 and the elastic member 33' with the second positioning part 331', through the corresponding engagement between the neck portion 311 of each support member 31 and the engaging section 411 of the opening 41, it can provide freedom restriction in two directions, and at the same time utilize the elastic The second positioning portion 331 ′ of the component 33 ′ is elastically positioned to the first positioning portion 43 to provide a degree of freedom restriction in a third direction.

The elastic member 33' in this embodiment is an example of a button, especially a button with a keycap and a spring 333' inside. Resetting elasticity, and the keycap is used as the second positioning part 331', because the elastic member 33', which is an example of a button, also has the resetting elasticity after being pressed by an external force, that is, the steps of fixing or releasing the operation It is completely the same as the first embodiment, so it will not be repeated here.

It can be seen from the above-mentioned embodiments that in the circuit board fixing mechanism of the present invention, in addition to using the supporting member to provide two-direction degree of freedom positioning, it is mainly based on the elastic member having the second positioning part and the first positioning part relatively arranged on the circuit board. A positioning part provides the third direction of freedom positioning restriction, so it is completely different from the prior art button handle, button handle seat, and fixing parts; at the same time, there is no need to install the button handle and button handle seat on the circuit board , thus saving parts cost and installation cost, and overcoming the problem of inconvenient stacking of circuit boards. In addition, because the design that provides the third direction limiting effect is the first positioning portion and the elastic member with the second positioning portion, and its setting position can be equivalent to replacing one of the supporting columns and openings in the prior art, so there is no The fear of taking up extra space also relatively reduces the use of parts, so the shortcomings of the prior art have been overcome.

The specific embodiments described above are only used to illustrate the characteristics and functions of the present invention, rather than to limit the scope of the present invention. Without departing from the above-mentioned spirit and technical scope of the present invention, any application of the present invention Equivalent changes and modifications made from the disclosed contents should still be covered by the present invention.

Claims (10)

1. a circuit board fixing mechanism is to be used for fixing a circuit board to a plurality of perforates to be provided with on the face, and the same side of respectively this perforate is equipped with the engaging section of dwindling, and it is characterized in that this fixed mechanism comprises at least:

This circuit board is located in first location division;

A plurality of strutting pieces are located at this face are set, and wear for this perforate correspondence respectively, and have in order to snap into the neck of this engaging section; And

Elastic component is located at this face is set, and has second location division, is positioned to this first location division with correspondence under the state that snaps into neck in the engaging section.

2. circuit board fixing mechanism according to claim 1 is characterized in that; This elastic component is that oblique standing is located at the elastic arm that this is provided with face, and this elastic arm top is located in this second location division.

3. circuit board fixing mechanism according to claim 2 is characterized in that; The incline direction of this elastic arm is same as the direction of this engaging section in the face of perforate.

4. circuit board fixing mechanism according to claim 2 is characterized in that; The incline direction of this elastic arm is in contrast to the direction of this engaging section in the face of perforate.

5. circuit board fixing mechanism according to claim 2 is characterized in that; This second location division is the projection corresponding to this neck height, and this first location division then is the opening of this projection of corresponding location.

6. circuit board fixing mechanism according to claim 5 is characterized in that; This projection and this opening be shaped as rectangle.

7. circuit board fixing mechanism according to claim 5 is characterized in that; This projection edge is provided with chamfering in order to withdrawing from this opening.

8. circuit board fixing mechanism according to claim 1 is characterized in that; This elastic component is located at the button that this is provided with face and highly is same as this neck for upright, and this second location division then is the keycap of this button.

9. circuit board fixing mechanism according to claim 1 is characterized in that; This strutting piece is located at the support column that this is provided with face for upright, and this neck is adjacent to the top.

10. according to claim 1 or 9 described circuit board fixing mechanisms, it is characterized in that; The width on this strutting piece top is less than the width below the neck.

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