CN215683125U

CN215683125U - PCB board carrier

Info

Publication number: CN215683125U
Application number: CN202120841334.7U
Authority: CN
Inventors: 陈明
Original assignee: Mitac Computer Shunde Ltd
Current assignee: Mitac Computer Shunde Ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2022-01-28
Anticipated expiration: 2031-04-22

Abstract

A PCB carrier is applicable to server products and used for bearing a PCB in a PCBA process, and comprises a bearing frame, a positioning pin and a spring, wherein the bearing frame is provided with an accommodating groove corresponding to the shape of the PCB and used for accommodating the PCB, the positioning hole of one side edge of the bearing frame corresponding to the PCB protrudes upwards from the bottom of the accommodating groove, the position of the positioning hole of the other side edge of the bearing frame corresponding to the PCB is provided with a sliding groove which is vertical to the side edge of the PCB and extends along the X-axis direction, and the bearing frame is provided with an elastic abutting piece at one end far away from the positioning pin and used for elastically abutting against the PCB; and the elastic positioning assembly is assembled in the sliding groove and comprises a sliding piece, a limiting piece and an elastic resetting piece, the sliding piece is slidably arranged in the sliding groove, one end of the sliding piece, which is close to the accommodating groove, protrudes upwards to form a positioning column, the limiting piece is arranged on the sliding groove in a spanning mode and is used for limiting the sliding piece in the sliding groove, and the elastic resetting piece is elastically abutted between the sliding piece and the bearing frame.

Description

PCB board carrier

Technical Field

The utility model relates to a carrier, in particular to a PCB carrier suitable for large-size server products.

Background

Currently, in the pcba (printed Circuit Board assembly), in order to ensure the quality of the SMT, a jig is used to support the PCB. For smaller-sized consumer electronic products, such as tablet computers, PDAs, POS machines and other special-shaped boards, three-in-one jigs are considered, however, for larger-sized server products, the closer the carrier is to the four board edges of the PCB, the better the printing process, the better the printing precision, and for reflow soldering, the PCB and the four board edges cannot be completely attached, and a proper gap must be left to ensure that the expansion coefficient of the PCB and the carrier is not good when reflow soldering, the carrier cannot damage the PCB, the existing positioning mode includes two modes, namely a spring buckle and a positioning pin, if the spring buckle is too strong, the spring buckle can damage the PCB when passing through a reflow furnace and performing aoi (automated Optical inspection) board taking and placing, and if the force is too weak, the printing precision is not good when printing; the PCB can be damaged when the diameter is too large and the PCB is also passed through a reflow soldering furnace and an AOI (automated optical inspection) taking and placing plate by using a positioning pin, the printing precision is not influenced well when the diameter is too small, the high temperature and turnover of the reflow soldering furnace influence the flatness of a jig, the deformation standard of the existing carrier is not more than five thousandths of the length of a diagonal (the maximum quantity cannot be larger than 0.5mm), the problem of using the existing carrier if the existing carrier is singly used for reflow soldering is not large, but the printing quality is difficult to control if the existing carrier is used for a printing process.

Therefore, how to provide a PCB board carrier suitable for a large-sized server product becomes a problem to be solved.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a PCB carrier which can be used for bearing a PCB in printing, surface mounting and reflow soldering of large-size server products.

In order to solve the above technical problem, the present invention provides a PCB carrier for a server product, for supporting a PCB during a PCBA process, the PCB having two ends, two sides and a plurality of positioning holes, the PCB carrier comprising:

a bearing frame, wherein an accommodating groove for accommodating the PCB is formed in the upper surface of the bearing frame corresponding to the shape of the PCB, a through hole corresponding to the bottom element of the PCB is arranged at the bottom of the accommodating groove, a positioning pin protrudes upwards from the bottom of the accommodating groove corresponding to the positioning hole on one side of the PCB, a sliding groove extending along the direction perpendicular to the side of the PCB and along the X-axis direction is formed in the position of the bearing frame corresponding to the positioning hole on the other side of the PCB, an elastic abutting part is arranged at one end of the bearing frame far away from the positioning pin 101, one end of the elastic abutting part is connected to the bearing frame, and an abutting end protruding towards the inside of the accommodating groove is arranged at the other end of the elastic abutting part in the Y-axis direction perpendicular to the X-axis direction and is used for elastically abutting against the PCB when the PCB is accommodated in the accommodating groove; and

the elastic positioning component is assembled in the sliding groove and comprises a sliding piece, a limiting piece and an elastic resetting piece, the sliding piece is slidably arranged in the sliding groove, one end of the sliding piece close to the accommodating groove upwards protrudes and penetrates through a positioning column of the positioning hole of the PCB, the limiting piece is arranged on the sliding groove in a spanning mode and is used for limiting the sliding piece in the sliding groove, the elastic resetting piece elastically abuts against the position between the sliding piece and the bearing frame and provides elastic restoring force of the positioning column in the X-axis direction, and when the PCB deforms in the X-axis direction in a stretching mode, the positioning column can move correspondingly.

Preferably, the end of the sliding member provided with the positioning column is slidably disposed in the first sliding groove portion, the other end of the sliding member is slidably disposed in the second sliding groove portion, a clamping groove for accommodating one end of the elastic restoring member is disposed on the end surface facing the first sliding groove portion, and the other end of the elastic restoring member elastically abuts against the inner surface of the second sliding groove portion close to the first sliding groove portion.

Preferably, the elastic abutting member is provided with an anti-abrasion column penetrating through the abutting end, and the anti-abrasion column partially protrudes out of the abutting end and is used for directly abutting against the PCB.

Preferably, the limiting member is screwed and fixed on the bearing frame through a screw.

Preferably, the sliding groove is composed of a first sliding groove portion, a communicating portion and a second sliding groove portion, the first sliding groove portion is perpendicular to the side edge of the accommodating groove and is communicated with the accommodating groove, and the communicating portion is communicated between the first sliding groove portion and the second sliding groove portion and is smaller than the first sliding groove portion in width.

Preferably, the carrier is made of synthetic stone.

Compared with the prior art, the PCB carrier has the advantages that the elastic positioning component is designed in the X-axis direction, the elastic abutting part is designed in the Y-axis direction, the elastic abutting part can elastically abut against the PCB for positioning, the PCB carrier can be tightly attached to the PCB, the PCB can be accurately positioned in the printing and pasting processes, in the reflow soldering process, the elastic positioning component in the X-axis direction can absorb the expansion and contraction deformation of the PCB in the X-axis direction under the high-temperature condition, and the elastic abutting part in the Y-axis direction can absorb the expansion and contraction deformation of the PCB in the Y-axis direction, so that the beneficial effect of bearing the PCB in the printing, pasting and reflow soldering processes of large-size server products can be really achieved.

[ description of the drawings ]

Fig. 1 is a schematic perspective assembly view of a PCB board assembled by the PCB board carrier of the present invention.

Fig. 2 is a schematic perspective exploded view of the PCB carrier of the present invention relative to a PCB.

Fig. 3 is a partially enlarged view illustrating the components of the elastic positioning assembly of the PCB carrier according to the present invention.

Fig. 4 is a partially enlarged schematic view showing an assembly state of an elastic reset member of the elastic positioning assembly of the PCB carrier of the present invention.

Fig. 5 is a partially enlarged view illustrating a state where the elastic positioning member of the PCB carrier of the present invention is assembled to the carrier.

FIG. 6 is a partially enlarged view showing the PCB carrier of the present invention if the PCB is elastically positioned.

Fig. 7 is a partially enlarged view illustrating a state of the elastic positioning member when the PCB board is contracted in the X-axis direction.

[ detailed description ] embodiments

Referring to fig. 1-2, a PCB carrier of the present invention is suitable for a server product for carrying a PCB 2 in a PCBA process, the PCB 2 has two ends, two sides and a plurality of positioning holes (not shown), and the PCB carrier of the present invention includes a carrier 10 and a resilient positioning element 11.

The carrier 10 has a receiving groove 100 formed on the upper surface thereof corresponding to the PCB 2 for receiving the PCB 2, the bottom of the receiving slot 100 is disposed with a corresponding through hole (not labeled) corresponding to the bottom component of the PCB board 2, the positioning holes of the carrier 10 corresponding to one side of the PCB board 2 are protruded with positioning pins 101 upward from the bottom of the receiving slot 100, the position of the carrier 10 corresponding to the positioning hole on the other side of the PCB 2 is provided with a sliding slot 102 extending along the direction perpendicular to the side of the PCB 2 and along the X-axis direction, in the embodiment, as shown in fig. 3, the slide groove 102 is composed of a first slide groove portion 1020, a communicating portion 1021 and a second slide groove portion 1022, the first sliding slot portion 1020 is perpendicular to the side of the receiving slot 100 and is communicated with the receiving slot 100, the communicating portion 1021 is communicated between the first sliding groove portion 1020 and the second sliding groove portion 1022, and has a width smaller than that of the first sliding groove portion 1020. The supporting frame 10 is provided with an elastic abutting member 103 at one end thereof away from the positioning pin 101, that is, the elastic abutting member 103 is closer to the one side of the sliding slot 102, one end of the elastic abutting member 103 is connected to the supporting frame 10, and the other end is provided with an abutting end 1030 protruding toward the accommodating slot 100 in the Y-axis direction perpendicular to the X-axis direction, for elastically abutting against the PCB 2 when the PCB 2 is accommodated in the accommodating slot 100, so that the PCB 2 continues to abut against the PCB 2 along with the elastic deformation when the PCB 2 expands and contracts in the Y-axis direction.

As shown in fig. 3, the elastic positioning assembly 11 is assembled to the sliding groove 102 and includes a sliding component 110, a limiting component 111 and an elastic resetting component 112, the sliding component 110 is slidably disposed in the sliding groove 102, and an end of the sliding component close to the accommodating groove 100 protrudes upwards to pass through a positioning post 1100 of the positioning hole of the PCB 2, the limiting component 111 is disposed on the sliding groove 102 in a straddling manner for limiting the sliding component 110 in the sliding groove 102, the elastic resetting component 112 elastically abuts against between the sliding component 110 and the bearing frame 10 to provide an elastic restoring force of the positioning post 1100 in the X-axis direction, and when the PCB 2 is deformed in the X-axis direction, the positioning post 110 can move correspondingly. In this embodiment, the end of the sliding component 110 where the positioning pillar 1100 is disposed is slidably disposed on the first sliding groove portion 1020, as shown in fig. 4, the other end of the sliding component 110 is slidably disposed on the second sliding groove portion 1022, and a slot 1101 is disposed on an end surface facing the first sliding groove portion 1020 and is configured to receive one end of the elastic restoring component 112, and the other end of the elastic restoring component 112 elastically abuts against an inner surface of the second sliding groove portion 1020 close to the first sliding groove portion 1020.

In this embodiment, in order to avoid the abrasion of the abutting end 1030 of the elastic abutting member 103 caused by long-term use, the elastic abutting member 103 penetrates the abutting end 1030 with the anti-abrasion post 1031, and the anti-abrasion post 1031 partially protrudes out of the abutting end 1030 for abutting against the PCB 2 directly.

In the embodiment, in order to effectively reduce the weight of the jig and avoid abrasion of the equipment rails, the bearing frame 10 of the present invention is made of synthetic stone.

In the embodiment, the limiting member 111 is screwed to the carriage 10 by screws 113.

When the PCB carrier of the utility model is used for fixing a PCB 2, the PCB 2 is accommodated in the accommodating groove 100, the positioning hole of one side 20 of the PCB 2 is sleeved on the positioning pin 101 of the bearing frame 10, the positioning hole of the other side of the PCB 2 is sleeved on the positioning column 1100 of the sliding part 110 of the elastic positioning component 11, one end of the PCB 2 is abutted against one end of the accommodating groove 100, the elastic abutting part 103 of the bearing frame 10 elastically abuts against the other end of the PCB 2, because the elastic positioning component 11 is designed in the X-axis direction and the elastic abutting part 103 is designed in the Y-axis direction and can elastically abut against the PCB 2 for positioning, the PCB carrier of the utility model can be ensured to be tightly attached to the PCB 2, the PCB 2 can be ensured to be accurately positioned in the printing and pasting processes, and in the reflow soldering process, the elastic positioning component 11 in the X-axis direction can absorb the shrinkage deformation of the PCB 2 in the X-axis direction under the high temperature condition, as shown in fig. 7, that is, when the PCB 2 contracts in the X-axis direction, the positioning posts 1100 of the elastic positioning assembly 11 will displace along with the PCB 2 under the action of the elastic restoring member 112, so as to avoid the PCB 2 being pulled in the X-axis direction to cause damage, and the elastic propping member 103 in the Y-axis direction can absorb the expansion and contraction deformation of the PCB 2 in the Y-axis direction.

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 conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions 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

1. The utility model provides a PCB board carrier, its is applicable to the server product for bear the weight of the PCB board in the PCBA process, this PCB board has two tip, two sides and a plurality of locating hole, its characterized in that includes:

2. The PCB carrier of claim 1, wherein the sliding groove comprises a first sliding groove portion, a connecting portion and a second sliding groove portion, the first sliding groove portion is perpendicular to a side of the receiving groove and is connected to the receiving groove, the connecting portion is connected between the first sliding groove portion and the second sliding groove portion and has a width smaller than that of the first sliding groove portion, the end of the sliding member having the positioning post is slidably disposed in the first sliding groove portion, the other end of the sliding member is slidably disposed in the second sliding groove portion, a clamping groove for receiving one end of the elastic restoring member is disposed on an end surface facing the first sliding groove portion, and the other end of the elastic restoring member elastically abuts against an inner surface of the second sliding groove portion close to the first sliding groove portion.

3. The PCB carrier of claim 2, wherein the resilient urging member is formed with an anti-wear post extending through the urging portion, the anti-wear post partially protruding out of the urging portion for directly urging against the PCB.

4. The PCB carrier of claim 3, wherein the position-limiting member is screwed to the carrier frame by screws.

5. A PCB carrier as in any of claims 1-4 wherein the carrier is made of synthetic stone.