CN212951541U - Tray for accommodating circuit boards - Google Patents

Abstract

The utility model discloses a tray for holding circuit board, a serial communication port, including the body and form a plurality of holding chamber on the body, the holding chamber is used for acceping the circuit board, and there is the first surface in the holding intracavity, and one side in holding chamber is equipped with the supporting part, and supporting part protrusion in the first surface, supporting part include supporting part top surface and supporting part bottom surface, and the supporting part bottom surface is located the coplanar with the first surface, and the supporting part is arranged in the wiring district of supporting circuit board. The utility model discloses a scheme can avoid making the circuit board atress uneven and take place the warpage with whole wiring district is unsettled, can avoid the lead wire in the tray direct contact wiring district again to ensure the cleanliness factor of circuit board.

Description

Tray for accommodating circuit boards

Technical Field

The utility model relates to a bearing tool technical field, concretely relates to tray for holding circuit board.

Background

In the transportation process of the circuit board, the circuit board is usually required to be accommodated by using a tray, and the tray for accommodating the circuit board is generally required not to be in direct contact with leads in a wiring area of the circuit board because module assembly has strict requirements on the cleanliness and the roughness of the circuit board. If the tray carries out the processing of keeping away the sky to whole wiring district, on the one hand. The clearance treatment leads to the wiring area to be all suspended in the tray and the phenomenon that one side of the circuit board sinks and the other side tilts easily occurs because the overall structure is light, thereby increasing the warpage defective rate. On the other hand, once one side of the circuit board sinks down to contact the tray, the roughness of the circuit board will increase. Therefore, a tray design which can meet the requirement of cleanliness and reduce the warping of the circuit board is urgently needed.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a tray for holding circuit board can avoid making the circuit board atress uneven with whole wiring district is unsettled and take place the warpage, can avoid the lead wire in the tray direct contact wiring district again to ensure the cleanliness factor of circuit board.

The utility model provides a tray for holding circuit board, include the body and be formed in a plurality of holding chamber on the body, the holding chamber is used for acceping the circuit board, there is the first surface in the holding chamber, one side in holding chamber is equipped with the supporting part, the supporting part protrusion in the first surface, the supporting part includes supporting part top surface and supporting part bottom surface, the supporting part bottom surface with the first surface is located the coplanar, the supporting part is used for supporting wiring district in the circuit board.

The supporting part can support the bearing part in the wiring area of the circuit board so as to support the suspension position of the circuit board. On the one hand, the phenomenon that the wiring area is suspended and warped due to heavy weight of the head when the circuit board is placed in the tray can be prevented, and when the circuit board is assembled, the wiring area needs to be sucked by the suction head, and if the wiring area is suspended, the deformation of the circuit board can be caused at the moment when the suction head sucks the wiring area. The arrangement of the supporting part can reduce the defective rate of warping; on the other hand, what the supporting part direct contact was the portion of leaning on of holding in wiring district neither can the direct contact lead wire in the wiring district, also can let and leave certain space between the first surface of lead wire and tray to the cleanliness factor of guarantee circuit board.

In one embodiment, the area of the top surface of the support part is the same as the area of the bottom surface of the support part, and the projection of the top surface of the support part onto the first surface coincides with the bottom surface of the support part. The upper and lower areas of the supporting part are the same, namely the cylindrical supporting part has better supporting strength to the bearing part.

In one embodiment, the top surface of the support part has a larger area than the bottom surface of the support part, and the bottom surface of the support part falls within a projection range of the top surface of the support part on the first surface. The structure that the supporting part is big-end-up can both save materials, also can avoid the first lateral wall of supporting part to contact the lead wire around the portion of leaning on.

In one embodiment, a plurality of first side walls are arranged between the top surface of the supporting part and the bottom surface of the supporting part, and the first side walls are planes or cambered surfaces recessed towards the inside of the supporting part. The first side wall is a tray with a plane structure, the mold is simple in structure and easy to manufacture, and the tray is easy to pull out after being formed; the first side wall is a supporting part with a concave cambered surface structure, so that the first side wall can be prevented from contacting with the lead wires around the bearing part.

In one embodiment, the other side of the accommodating cavity is provided with a first sunken part for bearing a connector of the circuit board, and the first sunken part is sunken relative to the first surface. Because the thickness of the connector is larger, the first sinking part can ensure that the circuit board can be stably placed in the tray, and the warping caused by the uneven thickness of the circuit board can be avoided.

In one embodiment, a clamping opening is formed in the waist of the accommodating cavity, the clamping opening is located between the supporting portion and the first sinking portion, and the clamping opening is convexly formed in one side of the waist. Prior to assembly, the circuit boards all require manual inspection with a jig. The clamping opening is arranged, so that the clamp can conveniently clamp the moving space of the circuit board in the horizontal direction, the warping of the circuit board caused by the extrusion of the clamp on the circuit board when the clamp is used is avoided, and the circuit board can be prevented from being scratched by the clamp.

In one embodiment, the waist is equipped with the second portion of sinking, the second portion of sinking is located press from both sides and get the mouth, work as the circuit board is arranged in when the holding chamber, press from both sides get the mouth with the second portion of sinking provides the clamp that presss from both sides and gets the space for anchor clamps get the circuit board, the second portion of sinking for first surface is sunken, the second portion of sinking is including the portion opening of sinking and the portion bottom surface of sinking, the portion opening of sinking is for seting up in the opening of first surface. The second portion of sinking provides the activity space in the vertical direction for anchor clamps, and the circuit board is got towards one side clamp of the portion bottom surface of sinking to the anchor clamps of being convenient for, avoids prizing the circuit board and arouses the circuit board warpage.

In one embodiment, a projection of the opening of the depressed portion on a plane where the bottom surface of the depressed portion is located coincides with the bottom surface of the depressed portion. The second sunken part is the tray of cylindricality structure, and its mould is makeed more easily, also the easier drawing die of tray shaping back.

In one embodiment, a projection of the sinker opening onto a plane in which the sinker bottom surface lies partially coincides with the sinker bottom surface. The projection of the opening of the sinking part and the bottom surface of the sinking part is partially overlapped by three conditions, the area of the opening of the sinking part is larger than that of the bottom surface of the sinking part, the area of the opening of the sinking part is smaller than that of the bottom surface of the sinking part, and the area of the opening of the sinking part and that of the bottom surface of the sinking part are equal but the whole of the second sinking part is inclined. Thereby, flexible movement space can be provided for the clamp according to the process requirements or the shape of the clamp.

In one embodiment, a plurality of second side walls are arranged between the opening of the sinking portion and the bottom surface of the sinking portion, and the second side walls are planes or cambered surfaces. The second side wall is a second sinking part with a plane structure, the mold has a simple structure, the manufacture is easy, and the mold drawing is easier; the first side wall is a second sinking part of the cambered surface structure, and the angle is more flexible when the clamp goes deep into the second sinking part.

Drawings

To more clearly illustrate the structural features and effects of the present invention, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural diagram of a tray according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the tray of FIG. 1 from a-A;

fig. 3 is a schematic cross-sectional structure diagram of the tray in the embodiment of the present invention when the trays are placed in an overlapping manner;

fig. 4 is a schematic structural diagram of an accommodating chamber in an embodiment of the present invention;

FIG. 5 is a schematic plan view of a wiring area of the circuit board;

fig. 6 is a schematic view of various structures of the support part in the embodiment of the present invention;

fig. 7 is a schematic view of various structures of the second sinking portion in the embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in fig. 1, 2 and 4, the tray 10 includes a body 12 and a plurality of accommodating cavities 11 formed on the body 12, and the accommodating cavities 11 are shaped as a strip as a whole. In other embodiments, the receiving cavity 11 may have other shapes, and the shape of the receiving cavity 11 may be designed according to the shape of the circuit board, such as a U shape. The tray 10 may be used to carry a variety of circuit boards, including flexible circuit boards, printed circuit boards, rigid-flex boards, and the like. The trays 10 can be stacked, the convex parts and the concave parts of the trays 10 to be placed on the trays and the convex parts and the concave parts of the trays 10 to be placed under the trays are respectively placed correspondingly, and a space for placing the circuit board is still left in the accommodating cavity 11 of the stacked trays 10 for accommodating the circuit board, so that the storage and the transportation of the circuit board are facilitated. Fig. 3 is a schematic view showing the structure of the stacked trays 10.

As shown in fig. 2, 4-6, a supporting portion 114 is disposed at a side of the accommodating cavity having the first surface 11a in the accommodating cavity 11, the supporting portion 114 protrudes from the first surface 11a, the supporting portion 114 includes a supporting portion top surface 114a and a supporting portion bottom surface 114b, and the supporting portion bottom surface 114b is located on the same plane as the first surface 11 a. The receiving cavity 11 is used for carrying a circuit board, and the wiring region 20 of the circuit board includes a lead 21 and a bearing portion 22. The support portion 114 supports the bearing portion 22 and the position of the support portion 114 corresponds to the bearing portion 22, and the bearing portion 22 is used for directly contacting with the support portion 114. The leads 21 are located around the support portion 22, and the leads 21 are used for connection to other components such as a chip. The inability of the leads 21 to directly contact the tray 10 prevents an increase in the roughness of the leads 21. The area of the support portion top surface 114a is smaller than or equal to the area of the bearing portion 22. The height of the supporting portion 114 is greater than the height difference between the supporting portion 22 and the lead 21, so that a certain gap is left between the lead 21 and the first surface 11a of the tray 10. In the prior art, there is a problem in performing clearance processing on the whole wiring region 20 by using the tray 10, the wiring region 20 needs to be sucked by using the first suction head when the circuit board is assembled, and the wiring region 20 is deformed due to the suspension of the wiring region 20 without a supporting point, so that the circuit board is warped. Even if a second suction head is added at another position of the circuit board (for example, the middle position of the elongated circuit board) to suck the circuit board in cooperation with the first suction head, it is difficult to avoid that the first suction head presses the land 20 toward the first surface 11a at the moment of sucking the land 20, thereby causing warpage. The design of the supporting portion 114 in this embodiment can not only prevent the circuit board from warping or sinking due to uneven stress caused by suspending the wiring region 20 as a whole, but also prevent the leads 21 from directly contacting the tray 10, thereby ensuring the cleanliness of the tray.

In the present embodiment, as shown in fig. 4 and 6, the area of the support portion top surface 114a is the same as the area of the support portion bottom surface 114b, and the projection of the support portion top surface 114a on the first surface 11a overlaps the support portion bottom surface 114 b. That is, the supporting portion 114 has a cylindrical shape, or a prismatic shape, and the supporting portion 114 with a cylindrical structure has better supporting strength for the bearing portion 22. A plurality of first side walls 114c are arranged between the supporting part top surface 114a and the supporting part bottom surface 114b, the first side walls 114c are planes, the first side walls 114c are of plane structures, the mould of the tray 10 is easier to manufacture, and the mould is easier to pull when the tray 10 is separated from the mould; in other embodiments, the first sidewall 114c is an arc surface recessed toward the waist portion of the supporting portion 114 along the supporting portion top surface 114a and the supporting portion bottom surface 114b, so that the first sidewall 114c of the supporting portion 114 can be prevented from contacting the lead 21 around the supporting portion 114, and the material and the cost can be saved.

In another embodiment, unlike the above-described embodiment, as shown in fig. 6, the area of the support portion top surface 114a may be larger than that of the support portion bottom surface 114b, and the support portion bottom surface 114b falls within the projection range of the support portion top surface 114a on the first surface 11 a. That is, the supporting portion 114 is a truncated cone or a truncated pyramid having a large top and a small bottom, and the large top and the small bottom which can ensure the supporting strength can save materials and prevent the first sidewall 114c of the supporting portion 114 from contacting the lead 21 around the supporting portion 114.

In the present embodiment, as shown in fig. 2 and 4, the other side of the accommodating chamber 11 is provided with a first sunken section 117, and the first sunken section 117 is sunken with respect to the first surface 11 a. The first sinker 117 is used to carry a connector of a circuit board, wherein the depth of the first sinker 117 is equal to the thickness of the connector. The provision of the first depression 116 ensures that the circuit board is placed smoothly without causing the connector to warp relative to the rest of the circuit board, due to the large thickness of the connector. The side wall of the first dip 117 may be a curved surface or a flat surface.

As shown in fig. 4 and 7, the waist portion 112 of the accommodating chamber 11 is located at a middle position of the accommodating chamber, the waist portion 112 is provided with a gripping opening 115, and the gripping opening 115 is located between the support portion 114 and the first sunken portion 117. The clamping opening 115 is protruded from one side of the waist portion 112, so that when the circuit board is placed in the accommodating cavity 11, the width of the waist portion 112 in the direction perpendicular to the extending direction of the accommodating cavity 11 is larger than the width of the circuit board corresponding to the waist portion 112. Before the circuit board is assembled, the circuit board needs to be checked manually, and inevitably needs to be clamped by a clamp. The clamping opening 115 is arranged to facilitate the movement space of the clamp in the horizontal direction when the clamp clamps the circuit board, so as to avoid the warping of the circuit board caused by the extrusion of the clamp on the circuit board when the clamp clamps the circuit board, and prevent the clamp from scratching the circuit board. In other embodiments, the grasping openings 115 can be disposed on both sides of the waist portion 112, and thus can provide two grasping orientations for the clamp.

The waist portion 112 of the circuit board is also provided with a second depressed portion 116, the second depressed portion 116 being depressed with respect to the first surface 11 a. The second sinking portion 116 may be disposed in the grasping opening 115, or disposed on a side of the waist portion 112 close to the grasping opening 115, or disposed over the entire waist portion 112. Second sinker 116 includes sinker opening 116a and sinker bottom surface 116b, and sinker opening 116a and first surface 11a are located on the same plane. When the circuit board is placed in the accommodating cavity 11, a gap is left between the circuit board and the bottom surface 116b of the sinking portion of the second sinking port, and the clamp can enter the accommodating cavity 11 through the clamping port 115 and further enter the second sinking portion 116, so that the clamp can clamp the circuit board without prying the flexible circuit board. The second depressed portion 116 provides a gripping space for the clip in a direction perpendicular to the first surface 11 a.

The projection of the sinker opening 116a of the second sinker 116 on the plane of the sinker bottom surface 116b coincides with the sinker bottom surface 116b, and the areas of the cylindrical second sinker 116, sinker opening 116a and sinker bottom surface 116b are equal, i.e., the space formed by the second sinker 116 is cylindrical. The advantage of such a design is that the mold for the tray 10 is easier to make and the tray 10 is easier to pull out when it is released from the mold. A plurality of second side walls 116c are arranged between the sinking portion opening 116a and the sinking portion bottom surface 116b, the second side walls 116c may be flat or arc, and a part of the plurality of second side walls 116c may be a flat structure and a part thereof is an arc structure.

In the present embodiment, as shown in fig. 7, a projection of the sinker opening 116a of the second sinker 116 on the plane where the sinker bottom surface 116b is located may partially overlap the sinker bottom surface 116b, and may be, for example: the area of the sinker opening 116a is greater than the area of the sinker bottom surface 116 b; the area of the sinking section opening 116a is equal to the area of the sinking section bottom surface 116b but the entire sinking space is inclined, preferably, from one side of the grasping opening 115 toward the center of the waist section 112, i.e., in the grasping direction of the jig, by an angle of 0 to 60. The second side wall 116c may be a flat surface or a curved surface. In other embodiments, some of the second sidewalls 116c may be a planar structure, and some may be an arc structure, and the arc may be an arc protruding toward the center of the second sinker 116 or an arc protruding away from the center of the second sinker 116. For example, the second sinking portion 116 may have four second side walls 116c, the second side wall 116c near the clamping opening 115 is an arc surface protruding away from the center of the second sinking portion 116, and the other three second side walls 116c are planar structures, so that the design can provide more flexible clamping space for the clamp.

In other embodiments, as shown in fig. 6 and 7, the combination of the supporting portion 114 and the second sinking portion 116 may be: the projection of the support top surface 114a of the support 114 on the first surface 11a coincides with the support bottom surface 114b, and the projection of the sinker opening 116a of the second sinker 116 on the plane of the sinker bottom surface 116b does not coincide with the sinker bottom surface 116 b; the combination of the supporting portion 114 and the second sinking portion 116 may be: the area of the support top surface 114a is larger than the area of the support bottom surface 114b, the support bottom surface 114b falls within the projection range of the support top surface 114a on the first surface 11a, and the projection of the sinker opening 116a of the second sinker 116 on the plane of the sinker bottom surface 116b coincides with the sinker bottom surface 116 b.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a tray for holding circuit board, its characterized in that, include the body and be formed in a plurality of holding chamber on the body, the holding chamber is used for acceping the circuit board, there is the first surface in the holding chamber, one side in holding chamber is equipped with the supporting part, the supporting part protrusion in the first surface, the supporting part includes supporting part top surface and supporting part bottom surface, the supporting part bottom surface with the first surface is located the coplanar, the supporting part is used for supporting wiring district in the circuit board.

2. The tray for receiving circuit boards as claimed in claim 1, wherein the top surface of the support part has the same area as the bottom surface of the support part, and the projection of the top surface of the support part on the first surface coincides with the bottom surface of the support part.

3. The tray for accommodating circuit boards as claimed in claim 1, wherein the support top surface has a larger area than the support bottom surface, and the support bottom surface falls within a projection range of the support top surface on the first surface.

4. The tray for accommodating circuit boards as claimed in claim 2 or 3, wherein a plurality of first side walls are provided between the top surface of the supporting portion and the bottom surface of the supporting portion, and the first side walls are flat surfaces or curved surfaces recessed inward of the supporting portion.

5. The tray for receiving circuit boards of claim 1 wherein the other side of the receiving cavity is provided with a first depression for carrying a connector of the circuit board, the first depression being recessed relative to the first surface.

6. The tray for accommodating circuit boards as claimed in claim 5, wherein the waist portion of the accommodating chamber is provided with a clamping opening between the supporting portion and the first sunken portion, the clamping opening being protruded at one side of the waist portion.

7. The tray for holding circuit boards as claimed in claim 6, wherein the waist portion is provided with a second sinking portion, the second sinking portion is disposed at the clamping opening, when the circuit board is disposed in the holding cavity, the clamping opening and the second sinking portion provide a clamping space for the clamp to clamp the circuit board, the second sinking portion is recessed relative to the first surface, the second sinking portion includes a sinking portion opening and a sinking portion bottom surface, and the sinking portion opening is an opening disposed at the first surface.

8. The tray for receiving circuit boards of claim 7 wherein a projection of said countersink opening onto a plane of said countersink bottom surface coincides with said countersink bottom surface.

9. The tray for receiving circuit boards of claim 7 wherein a projection of said countersink opening onto a plane of said countersink bottom surface partially coincides with said countersink bottom surface.

10. The tray of any one of claims 7-9, wherein there are second sidewalls between the opening of the depressed portion and the bottom surface of the depressed portion, the second sidewalls being planar or curved.

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