A printed circuit board carrier

Abstract

The printed circuit board carrier comprises a carrier plate, a pressing plate and a locking device. A through hole slightly larger than the printed circuit board is formed on the carrier plate, and a skirt is arranged on the inner wall of the through hole. The printed circuit board can be supported. The locking member of the first locking device is slidably arranged on the inner wall of the through hole in the horizontal direction. The side wall of the printed circuit board is abutted by the locking member and the inner wall of the through hole on the opposite side of the locking member, so that the printed circuit board is clamped and cannot shake in the horizontal direction on the skirt. The second locking device comprises a locking slot arranged on the carrier plate and a locking tongue arranged on the pressing plate. When the pressing plate is buckled on the carrier plate, the locking tongue is inserted into the locking slot, so that the relative position of the pressing plate and the carrier plate is locked. The printed circuit board and electronic components are pressed by the top rod arranged on the pressing plate, so that the relative position of the printed circuit board, electronic components and skirt is fixed, the misplacement and virtual welding of the electronic components during welding are avoided, and the yield is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of printed circuit board processing and manufacturing, and particularly relates to a printed circuit board carrier. BACKGROUND

[0002] Printed circuit board is a provider of electrical connection of electronic components, and its development has a history of more than 100 years. With the rapid development of electronic technology, printed circuit boards are widely used in various fields, and almost all electronic devices contain corresponding printed circuit boards.

[0003] In the manufacturing process of printed circuit boards, a chip mounter is usually used to insert electronic components such as resistors, capacitors, and chips on the printed circuit board, and then the electronic components are fixed by melting solder. In order to facilitate the movement of the printed circuit board, a printed circuit board carrier is usually used for cooperation in production. In order to facilitate the taking and placing of the printed circuit board, the size of the existing printed circuit board carrier is greater than that of the printed circuit board. After being placed, the printed circuit board is easy to shake, which causes the electronic components inserted on the printed circuit board to shake, and the misalignment and virtual welding phenomenon is easy to occur during welding, thereby affecting the yield of the product. SUMMARY

[0004] The purpose of the present application is to overcome the defects of the prior art, and to provide a printed circuit board carrier which can avoid misalignment and virtual welding of electronic components and has a high yield.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is that the printed circuit board carrier comprises:

[0006] A carrier plate is provided with a through hole slightly larger than the printed circuit board, and an inner wall of the through hole is provided with a skirt extending inwardly and horizontally, the skirt is used for carrying the printed circuit board, and a distance between an upper surface of the skirt and an upper surface of the carrier plate is greater than or equal to the thickness of the printed circuit board;

[0007] A pressing plate is detachably buckled on the carrier plate, and a top rod extending downwardly is arranged on the pressing plate, and the top rod is used for pressing the printed circuit board and the electronic components on the printed circuit board;

[0008] A locking device comprises a first locking device for preventing the printed circuit board from shaking horizontally on the skirt and a second locking device for locking the pressing plate on the carrier plate;

[0009] The first locking device comprises a locking piece which is slidably arranged on the inner wall of the through hole, the sliding direction of the locking piece is parallel to the horizontal plane, the locking piece is located above the skirt, and when the printed circuit board is placed on the skirt, the locking piece and the inner wall of the through hole on the opposite side of the locking piece clamp the printed circuit board.

[0010] The second locking device comprises lock slots on the carrier plate and lock latches on the pressing plate, the lock slots and the lock latches are in one-to-one correspondence and are rotatably arranged on the carrier plate and the pressing plate respectively, and the lock latches are inserted into the lock slots when the pressing plate is buckled on the carrier plate, so that the relative positions of the pressing plate and the carrier plate are locked.

[0011] Preferably, the first locking device further comprises an adjusting block and an elastic member, the adjusting block is movably arranged on the carrier plate in the horizontal direction, a connecting rod is slidably arranged on the adjusting block, one end of the connecting rod is connected to the locking member, the other end of the connecting rod is threadedly connected with a nut, and the elastic member is a compression spring sleeved on the connecting rod, the elastic member has a tendency to drive the locking member to slide inward and abut against the printed circuit board, and the nut is used to adjust the pre-tightening force of the elastic member.

[0012] Further preferably, the upper end of the locking member has a chamfer facilitating the insertion of the printed circuit board, when the printed circuit board is placed on the skirt, the side wall of the printed circuit board is in contact with the chamfer and pushes the locking member to slide outward through the chamfer.

[0013] Further preferably, the carrier plate is further provided with a sliding groove for accommodating the first locking device.

[0014] Preferably, the first locking device is at least two, and the sliding directions of the locking members of the two first locking devices are perpendicular to each other.

[0015] Preferably, the skirt is further provided with a tapered column serving as a guide, the tapered column is arranged in a guide hole on the printed circuit board, and the tapered column is arranged close to the first locking device.

[0016] Preferably, the printed circuit board carrier further comprises a positioning device for aligning the pressing plate and the carrier plate, the positioning device comprises positioning holes arranged on the carrier plate and positioning columns arranged on the pressing plate and extending downward.

[0017] Preferably, the second locking device further comprises a first mounting seat arranged on the carrier plate and a second mounting seat arranged on the pressing plate, the lock slots are arranged on the side wall of the first mounting seat, the lock latches are rotatably arranged on the second mounting seat, the second mounting seat is further provided with a spring, the spring has a tendency to drive the lock latches to rotate in the direction of inserting into the lock slots, and the upper end surface of the first mounting seat and the lower end surface of the second mounting seat are in abutment when the pressing plate is buckled on the carrier plate.

[0018] Preferably, the end of the locking member in contact with the printed circuit board has a plurality of teeth extending in the vertical direction, which draw or press marks on the side wall of the printed circuit board when the printed circuit board is placed on the skirt and / or the printed circuit board is removed from the skirt, the marks constituting an anti-fake mark of the printed circuit board.

[0019] Further preferably, the ejector rod is an elastic ejector rod, the ejector rod being slidably arranged on the pressing plate, and a silica gel block being arranged at the bottom of the ejector rod.

[0020] Thanks to the technical scheme, the present application has the following advantages compared with the prior art:

[0021] The printed circuit board carrier provided by the present application comprises a carrier plate, a pressing plate and a locking device, a through hole slightly larger than the printed circuit board is formed on the carrier plate, and a skirt is arranged on the inner wall of the through hole, so that the printed circuit board can be carried; the locking member of the first locking device is slidably arranged on the inner wall of the through hole in the horizontal direction, so that the locking member and the inner wall of the through hole on the opposite side of the locking member can abut against the side wall of the printed circuit board, the printed circuit board is clamped, and the printed circuit board cannot shake in the horizontal direction on the skirt; the second locking device comprises a locking slot arranged on the carrier plate and a locking tongue arranged on the pressing plate, when the pressing plate is buckled on the carrier plate, the locking tongue can be inserted into the locking slot, so that the relative position of the pressing plate and the carrier plate is locked; the ejector rod arranged on the pressing plate can press the printed circuit board and electronic components, so that the relative position of the printed circuit board, the electronic components and the skirt is fixed, and the mispositioning and virtual welding of the electronic components during welding are avoided, and the yield rate is high. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a front view of a preferred embodiment of the present application, at this time, the pressing plate is buckled on the carrier plate.

[0023] Figure 2 is Figure 1 is a top view of the carrier plate in the present application.

[0024] Figure 3 is Figure 2 is an enlarged sectional view of the A-A direction in the present application.

[0025] Figure 4 is Figure 2 is an enlarged view of B in the present application.

[0026] Figure 5 is Figure 1 is a bottom view of the pressing plate in the present application.

[0027] Figure 6 is Figure 5 is an enlarged sectional view of the C-C direction in the present application.

[0028] Wherein:

[0029] 10. carrier plate; 11. through hole; 12. skirt; 13. sliding groove; 20. pressing plate; 21. ejector rod; 211. ejector rod body; 212. spring; 213. nut; 214. silica gel block; 31. first locking device; 311. locking piece; 312. adjusting block; 313. elastic piece; 314. connecting rod; 315. nut; 316. chamfer; 317. tapered column; 318. tooth; 321. locking slot; 323. first mounting seat; 324. second mounting seat; 322. locking tongue; 41. positioning column; 42. positioning hole. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present application are described in detail below with reference to the accompanying drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art, and the scope of protection of the present application can be more clearly defined.

[0031] As Figures 1-6 shown, the printed circuit board carrier provided by the present application comprises a carrier plate 10, a pressing plate 20, a locking device and a positioning device, wherein the carrier plate 10 is provided with a through hole 11 larger than the printed circuit board, the inner wall of the through hole 11 is provided with a horizontally extending skirt 12 for carrying the printed circuit board, the skirt 12 is discontinuously distributed, and the distance between the upper surface of the skirt 12 and the upper surface of the carrier plate 10 is equal to the thickness of the printed circuit board; the pressing plate 20 is detachably buckled on the carrier plate 10, the pressing plate 20 is provided with an ejector rod 21 extending downward, the ejector rod 21 is used for pressing the printed circuit board and electronic components on the printed circuit board; the locking device comprises a first locking device 31 for preventing the printed circuit board from shaking left and right and forward and backward along the horizontal direction on the skirt 12 and a second locking device for locking the pressing plate 20 on the carrier plate 10; the first locking device 31 comprises a locking piece 311 which is slidably arranged on the inner wall of the through hole 11, the sliding direction of the locking piece 311 is parallel to the horizontal plane, the locking piece 311 is located above the skirt 12, when the printed circuit board is placed on the skirt 12, the locking piece 311 and the inner wall of the through hole 11 opposite to the locking piece 311 clamp the printed circuit board, so that the printed circuit board cannot shake left and right and forward and backward along the horizontal direction on the skirt 12; the second locking device comprises a locking slot 321 arranged on the carrier plate 10 and a locking tongue 322 arranged on the pressing plate 20, the locking tongue 322 and the locking slot 321 are both provided with a plurality of locking tongues 322 and locking slots 321 which are correspondingly arranged one by one, the locking tongue 322 is rotatably arranged on the pressing plate 20, when the pressing plate 20 is buckled on the carrier plate 10, the locking tongue 322 is inserted into the locking slot 321, so that the relative position of the pressing plate 20 and the carrier plate 10 is locked.

[0032] In the embodiment, the first locking device 31 further comprises an adjusting block 312 and an elastic member 313. The adjusting block 312 is movably arranged on the carrier plate 10 in a horizontal direction. A connecting rod 314 is slidably arranged on the adjusting block 312. One end of the connecting rod 314 is connected to the locking member 311. The other end of the connecting rod 314 is threadedly connected to a nut 315. The sliding direction of the locking member 311, the axial direction of the connecting rod 314 and the moving direction of the adjusting block 312 are parallel to each other. The elastic member 313 is a compression spring which is sleeved on the connecting rod 314. Two ends of the elastic member 313 abut against the adjusting block 312 and the locking member 311 respectively. The elastic member 313 has a tendency to drive the locking member 311 to slide inwardly and abut against the printed circuit board. The nut 315 is used to adjust the pre-tightening force of the elastic member 313. By moving the adjusting block 312, the locking member 311 can be adjusted to a proper position. By loosening or tightening the nut 315, the pre-tightening force of the elastic member 313 can be adjusted and applied to the locking member 311.

[0033] For the convenience of the above adjustment, a sliding groove 13 is formed on the carrier plate 10 for accommodating the first locking device 31.

[0034] For the convenience of placing the printed circuit board on the skirt 12, the upper end of the locking member 311 has a chamfer 316 which is convenient for the printed circuit board to be placed thereon. When the printed circuit board is placed on the skirt 12, the side wall of the printed circuit board is in contact with the chamfer 316 and pushes the locking member 311 to slide outwardly through the chamfer 316. The chamfer 311 can be a circular arc chamfer or a 30-60° chamfer.

[0035] In the embodiment, there are four first locking devices 31, two of which are arranged close to two mutually perpendicular sides of the printed circuit board respectively. The sliding directions of the locking members 311 of the first locking devices 31 of different groups are perpendicular to each other. In this way, the printed circuit board has better anti-shaking effect.

[0036] To further enhance the above effect, the end of the locking member 311 in contact with the printed circuit board has a plurality of teeth 318 extending in the vertical direction, the extending direction of the teeth 318 being perpendicular to the sliding direction of the locking member 311; due to the presence of the teeth 318, when the printed circuit board is removed from the skirt 12, the side wall of the printed circuit board in contact with the locking member 311 will leave a mark, which is drawn or pressed on the side wall of the printed circuit board by the teeth 318, and the depth of the mark can be adjusted by adjusting the pre-tightening force of the elastic member 313; by changing the spacing between the teeth 318, the mark can also exhibit the effect of a bar code, and by changing the cross-sectional shape of the teeth 318, the mark can be made more special and not easy to be copied; since electronic components are arranged on both sides of the printed circuit board, high temperature caused by heat generated by the electronic components generally does not affect the side wall of the printed circuit board, so that the mark is not easily damaged, thereby forming an anti-counterfeit mark of the printed circuit board.

[0037] To facilitate and accurately place the printed circuit board on the skirt 12, a tapered column 317 is also provided on the skirt 12, the tapered column 317 being provided in a guide hole on the printed circuit board to serve as a guide, the tapered column 317 being arranged close to the first locking device 31, the tapered column 317 being a plurality of and asymmetrically arranged, and also being capable of preventing the printed circuit board from being placed upside down.

[0038] In the present embodiment, the second locking device further comprises a first mounting seat 323 provided on the carrier plate 10 and a second mounting seat 324 provided on the pressing plate 20, the locking slot 321 being provided on the side wall of the first mounting seat 323, the locking tongue 322 being rotatably provided on the second mounting seat 324, the second mounting seat 324 further being provided with a spring 325, the spring 325 having a tendency to drive the locking tongue 322 to rotate in the direction of inserting into the locking slot 321, the upper end surface of the first mounting seat 323 and the lower end surface of the second mounting seat 324 being in abutment when the pressing plate 20 is clamped on the carrier plate 10.

[0039] To facilitate the alignment of the pressing plate 20 and the carrier plate 10, the printed circuit board carrier further comprises a positioning device for aligning the pressing plate 20 and the carrier plate 10, the positioning device comprising a positioning hole 42 provided on the carrier plate 10 and a positioning column 41 extending downwardly provided on the pressing plate 20.

[0040] In the embodiment, the top rod 21 is an elastic top rod, the top rod 21 is slidably arranged on the pressing plate 20, specifically, the top rod 21 comprises a top rod body 211, a spring 212, a nut 213 and a silica gel block 214, the top rod body 211 is in a cylindrical shape, the top rod body 211 is slidably arranged on the pressing plate 20, the spring 212 is sleeved on the top rod body 211, the nut 213 is threadedly connected to the upper end of the top rod body 211 and located above the pressing plate 20, the silica gel block 214 is connected to the lower end of the top rod body 211 and located below the pressing plate 20, the two ends of the spring 212 are abutted against the pressing plate 20 and the silica gel block 214 respectively, by adjusting the specific position of the nut 213 on the top rod body 211, the length of the top rod body 211 extending downward and the pre-tightening force of the spring 212 can be adjusted, so that the top rod 21 can better abut against the printed circuit board and the electronic components on the printed circuit board.

[0041] The printed circuit board carrier provided by the application can carry the printed circuit board by forming a through hole slightly larger than the printed circuit board on the carrier plate and arranging a skirt on the inner wall of the through hole, can tightly clamp the printed circuit board by abutting the sidewall of the printed circuit board against the locking piece and the inner wall of the through hole on the opposite side of the locking piece, so that the printed circuit board cannot shake in the horizontal direction on the skirt, the second locking device comprises a locking slot arranged on the carrier plate and a locking tongue arranged on the pressing plate, when the pressing plate is buckled on the carrier plate, the locking tongue can be inserted into the locking slot to lock the relative position of the pressing plate and the carrier plate, the printed circuit board and the electronic components can be tightly pressed by arranging the top rod on the pressing plate, so that the relative position of the printed circuit board, the electronic components and the skirt is fixed, the mispositioning and virtual welding of the electronic components during welding are avoided, and the yield rate is high.

[0042] The above embodiment is only used for illustrating the technical concept and characteristics of the application, and the purpose is to enable those skilled in the art to understand the content of the application and implement it, and cannot limit the protection scope of the application, any equivalent transformation or modification according to the spirit and essence of the application should be covered in the protection scope of the application.

Claims

1. A printed circuit board carrier, comprising: a carrier plate having a through hole slightly larger than a printed circuit board, an inner wall of the through hole being provided with a horizontally extending skirt for bearing the printed circuit board, a distance between an upper surface of the skirt and an upper surface of the carrier plate being greater than or equal to a thickness of the printed circuit board; a first locking device for preventing the printed circuit board from shaking horizontally on the skirt, the first locking device comprising a locking member slidably arranged on the inner wall of the through hole and a resilient member, the locking member being located above the skirt and having a sliding direction parallel to a horizontal plane, the locking member and the inner wall of the through hole on a side opposite to the locking member clamping the printed circuit board when the printed circuit board is placed on the skirt; characterized in that: the first locking device has two locking members, the sliding directions of the two locking members being perpendicular to each other, upper ends of the locking members having chamfers for facilitating insertion of the printed circuit board, the resilient member having a tendency to drive the locking members to slide inwardly and abut against the printed circuit board, side walls of the printed circuit board being in contact with the chamfers when the printed circuit board is placed on the skirt, and the chamfers pushing the locking members to slide outwardly; the carrier plate further comprises a pressing plate detachably buckled on the carrier plate, and a second locking device for locking the pressing plate on the carrier plate, the pressing plate being provided with a plurality of top rods downwardly extending for pressing the printed circuit board and electronic components thereon, the top rod comprising a top rod body slidably arranged on the pressing plate in a cylindrical shape, a spring arranged on the top rod body, a nut threadedly connected to an upper end of the top rod body and located above the pressing plate, and a silica gel block connected to a lower end of the top rod body and located below the pressing plate, two ends of the spring being abutted against the pressing plate and the silica gel block respectively, the second locking device comprising a locking slot arranged on the carrier plate and a locking tongue arranged on the pressing plate, the locking slot and the locking tongue each having a plurality of locking slots and locking tongues arranged in one-to-one correspondence, the locking tongue being rotatably arranged on the pressing plate, and the locking tongue being inserted into the locking slot when the pressing plate is buckled on the carrier plate, so that the relative positions of the pressing plate and the carrier plate are locked.

2. The printed circuit board carrier of claim 1, wherein: the first locking device further comprises an adjusting block, the adjusting block being movably arranged on the carrier plate in a horizontal direction, a connecting rod being slidably arranged on the adjusting block, one end of the connecting rod being connected to the locking member, the resilient member being a compression spring sleeved on the connecting rod, and the other end of the connecting rod being threadedly connected with a nut for adjusting a pre-tightening force of the resilient member.

3. The printed circuit board carrier of claim 2, wherein: the carrier plate is further provided with a sliding groove for accommodating the first locking device.

4. The printed circuit board carrier of claim 1, wherein: the skirt is further provided with a conical column serving as a guide, the conical column being arranged in a guide hole on the printed circuit board, and the conical column being located close to the first locking device.

5. The printed circuit board carrier of claim 1, wherein: the printed circuit board carrier further comprises a positioning device for aligning the pressing plate and the carrier plate, the positioning device comprising a positioning hole arranged on the carrier plate and a positioning column downwardly extending on the pressing plate.

6. The printed circuit board carrier of claim 1, wherein: The second locking device further comprises a first mounting base arranged on the carrier plate and a second mounting base arranged on the pressing plate, the locking slot is arranged on the side wall of the first mounting base, the lock tongue is rotatably arranged on the second mounting base, a spring is further arranged on the second mounting base, the spring has a tendency to drive the lock tongue to rotate in the direction of inserting into the locking slot, and the upper end surface of the first mounting base and the lower end surface of the second mounting base are in abutment when the pressing plate is buckled on the carrier plate.

7. The printed circuit board carrier of claim 1, wherein: The end of the locking member in contact with the printed circuit board has a plurality of teeth extending in the vertical direction, and when the printed circuit board is placed on the skirt and / or removed from the skirt, the teeth draw or press marks on the side wall of the printed circuit board, which constitute the anti-fake marks of the printed circuit board.

Images