CN217882249U

CN217882249U - Reflow soldering auxiliary device with fastener and vertical surface-mounted connector

Info

Publication number: CN217882249U
Application number: CN202221315650.1U
Authority: CN
Inventors: 杜柳; 仲斌; 缪晓平; 王景锋; 张文娟
Original assignee: Chengdu CAIC Electronics Co Ltd
Current assignee: Chengdu CAIC Electronics Co Ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2022-11-22
Anticipated expiration: 2032-05-27

Abstract

The utility model discloses a take reflow soldering auxiliary device of perpendicular table of fastener to paste connector relates to electron equipment technical field. Including the base, set up the recess of fixed PCB board on the base, can dismantle on the base and be connected with the connector stopper, set up on the connector stopper with perpendicular table paste the spacing hole of connector sliding fit, the top of connector stopper is provided with the clamp plate that is used for compressing tightly the connector, and the top of clamp plate is provided with compresses tightly the subassembly. The connector can not deviate from the PCB in the process of installing and welding the connector, and solder paste printed on the PCB by the connector is prevented from being damaged. The assembly welding efficiency of the connector is effectively improved, the rework rate of the assembly welding of the connector is reduced, and the yield is improved.

Description

Reflow soldering auxiliary device with fastener and vertical surface-mounted connector

Technical Field

The utility model relates to an electron dress allies oneself with technical field, concretely relates to take reflow soldering auxiliary device of perpendicular table of fastener pastes connector.

Background

In the field of electronic assembly, connectors with fasteners are assembled and welded by pre-tightening the connectors with the fasteners and then welding, so that stress on welding points is avoided. The surface mounting connector realizes the use function by depending on the bonding of pins and a printed board, and in order to facilitate electrical connection, a vertical surface mounting connector with an interface insertion direction perpendicular to the PCB is adopted as the connector, the pins of the vertical surface mounting connector are often blocked by the connector, especially some miniature vertical surface mounting connectors with fasteners, and the mounting and welding modes of the surface mounting connector mainly include manual welding and reflow welding modes at present. The manual soldering method is to fix the connector on the PCB board by a fixing part and then manually solder the connector by using a soldering iron. In the mode, because the pin space of the vertical surface-mounted connector is small, the operation space is narrow, the operation difficulty of soldering by using the soldering iron is high, the quality problem of short circuit or missing soldering is easily caused, the efficiency is low, and the quality is unstable. The existing reflow soldering method is to print a prefabricated soldering paste on the front surface of the PCB, mount a connector, fix the connector on the back surface of the PCB by using a fixing piece, and finally reflow soldering. However, in this way, when the connector is fixed by the fixing member after the solder paste is printed, the connector is easily moved in the X-Y plane or the Z-axis of the PCB, so that the solder paste is damaged, which results in rework and extremely low production efficiency.

SUMMERY OF THE UTILITY MODEL

Not enough to the above-mentioned of prior art, the utility model provides a can increase yields, improve the reflow soldering auxiliary device who pastes the connector is pasted to perpendicular table of taking fastener of assembly and welding efficiency.

In order to achieve the purpose of the utility model, the utility model adopts the technical proposal that:

the utility model provides a take reflow soldering auxiliary device of perpendicular table of fastener to paste connector, it includes the base, sets up the recess of fixed PCB board on the base, can dismantle on the base and be connected with the connector stopper, set up on the connector stopper with perpendicular table paste connector sliding fit's spacing hole of connector, the top of connector stopper is provided with the clamp plate that is used for compressing tightly the connector, the top of clamp plate is provided with the compressing assembly.

The PCB is placed in the groove, the connector limiting block is installed on the base, the connector to be welded is placed in the connector limiting hole in the connector limiting block, the position of the connector is fixed, and then the pressing assembly is matched with the pressing plate to press the connector on the PCB; the connector can not deviate from the PCB in the process of installing and welding the connector, and solder paste printed on the PCB by the connector is prevented from being damaged. The assembly welding efficiency of the connector is effectively improved, the rework rate of assembly welding of the connector is reduced, and the yield is improved.

Furthermore, a through hole is formed in the center of the groove, a plurality of supporting plates are arranged on the side walls of the through hole, and mounting screw holes are formed in the supporting plates. The arrangement of the through holes can prevent other pins or electronic elements on the back of the PCB from being damaged when the connector is assembled and welded; on the other hand, the fasteners on two sides of part of the connector need to be matched with screws and washers, the screws and the washers need to be assembled from the back of the PCB, and the arrangement of the through holes improves the adaptability and is suitable for the assembly and welding of various connectors. The PCB is fixed by the installation screw holes, so that the relative displacement between the PCB and the connector is avoided; meanwhile, the connector welding device can be suitable for connector welding of PCB plates with different thicknesses.

Furthermore, one side of the connector limiting hole close to the base is provided with a soldering paste groove. After part PCB board is fixed in the recess, the upper surface of PCB board is higher than the upper surface of base, and the lower surface of connector stopper can and PCB board butt, and the setting in soldering paste groove can effectively avoid the printing to be destroyed at the soldering paste on PCB board surface by the connector stopper.

Furthermore, a square limiting column is arranged on the base, and square holes in sliding fit with the square limiting column are arranged on the connector limiting block and the pressing plate;

the pressing assembly comprises a pressing block positioned above the pressing plate; the locking screw hole is arranged at the top end of the square limiting column; the locking screw penetrates through the pressing block and the pressing plate and is connected with the screw hole, and the locking screw is in sliding fit with the pressing block; the locking screw is sleeved with a spring, and the spring is positioned above the pressing block.

The connector limiting block is clamped in the square limiting column of the base through the square hole, and the square limiting column prevents the connector limiting block and the pressing plate from rotating, so that the connector is effectively limited; the spring is pressed to the pressing block by screwing the locking screw rod, and the pressing block applies downward pressure to the pressing plate under the action of the internal stress of the spring, so that the connector is pressed on the PCB by the pressing plate.

Further, the lower surface of clamp plate is provided with the rubber pad. The rubber pad is arranged to compensate for the problem of clearance or incompact compression between the pressure plate and the top surface of the connector caused by the tolerance between the components; on the other hand, the pressure of the upper surfaces of the pressure plate and the connector can be reduced, and the connector is prevented from being damaged by the pressure plate.

Furthermore, one end, far away from the locking screw, of the pressing block is provided with a pressurizing block, and one side, close to the locking screw, of the pressurizing block is provided with an inclined plane. The arrangement of the pressurizing block enables the pressurizing block to have enough pressure on the pressing plate, and the pressing plate can supply enough pressure to the connector.

Furthermore, two fastening rods which are matched and connected with the fastening piece of the connector are arranged on the pressure plate; the two fastening rods are respectively positioned at two sides of the pressing block. In order to enable the connector to smoothly fall into the connector limiting hole, the side walls of the two ends of the connector limiting hole are provided with a small gap between the connector limiting hole and the side walls of the two ends of the connector limiting hole; on one hand, the arrangement of the fastening rod ensures that the connector cannot displace after falling into the connector limiting hole, and the solder paste is prevented from being damaged; on the other hand, use the anchorage bar to be connected with the connector, conveniently hold the connector to conveniently place the connector in the spacing hole of connector.

The utility model has the advantages that:

the utility model discloses a place the PCB board in the recess, install the connector stopper on the base after, put the connector that needs the welding into the connector spacing hole on the connector stopper to the position of fixed connector, compress tightly the connector on the PCB board by compressing tightly subassembly cooperation clamp plate again; the connector has the advantages that in the process of installing and welding the connector, the connector and the PCB cannot deviate, and solder paste printed on the PCB by the connector is prevented from being damaged. The assembly welding efficiency of the connector is effectively improved, the rework rate of the assembly welding of the connector is reduced, and the yield is improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of a top perspective structure of a connector limiting block;

FIG. 4 is a schematic view of a 25-core vertical surface mount connector, model J63A.

Wherein, 1, a base; 101. a groove; 102. a support plate; 103. mounting a screw hole; 104. a square limiting column; 105. locking the screw hole; 2. a connector stop block; 201. a connector limit hole; 202. a paste welding groove; 3. Pressing a plate; 301. a rubber pad; 302. a fastening rod; 401. pressing into blocks; 402. locking the screw rod; 403. a spring; 5. a square hole; 6. a pin; 7. a fastener.

Detailed Description

The following description of the embodiments of the present invention is provided to enable those skilled in the art to understand the invention, and it is to be understood that the invention is not limited to the details of the embodiments, but rather, the invention is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined and defined by the appended claims.

As shown in fig. 1-2, a reflow soldering auxiliary device of a vertical surface-mount connector with a fastener comprises a base 1, wherein a groove 101 for fixing a PCB is formed on the base 1, a through hole is formed in the center of the groove 101, a plurality of support plates 102 are arranged on the side walls of the through hole, and mounting screw holes 103 are formed in the support plates 102; the positions of the support plate 102 and the mounting screw holes 103 correspond to the positions of mounting holes provided in the PCB itself, and the PCB is fixed to the base 1 using a fastening member such as a bolt. Can dismantle on the base 1 and be connected with connector stopper 2, set up on the connector stopper 2 with perpendicular table paste the spacing hole 201 of connector sliding fit, as shown in fig. 3, one side that the spacing hole 201 of connector is close to base 1 is provided with the cream welding groove 202. A pressing plate 3 used for pressing the connector is arranged above the connector limiting block 2, and a rubber pad 301 is arranged on the lower surface of the pressing plate 3. A pressing component is arranged above the pressing plate 3.

A square limiting column 104 is arranged on the base 1, and square holes 5 which are in sliding fit with the square limiting column 104 are arranged on the connector limiting block 2 and the pressing plate 3; the connector limiting block 2 is clamped in the square limiting column 104 of the base 1 through the square hole 5, and then the detachable connection is realized by the pressing plate 3 and the pressing assembly.

The pressing assembly comprises a pressing block 401 positioned above the pressing plate 3; a locking screw hole 105 arranged at the top end of the square limiting column 104; the locking screw 402 penetrates through the pressing block 401 and the pressing plate 3 and is connected with the screw hole, and the locking screw 402 is in sliding fit with the pressing block 401; the locking screw 402 is sleeved with a spring 403, and the spring 403 is located above the pressing block 401. One end of the pressing block 401, which is far away from the locking screw 402, is provided with a pressurizing block, and one side of the pressurizing block, which is close to the locking screw 402, is provided with an inclined surface. Two fastening rods 302 which are matched and connected with the fastening piece 7 of the connector are arranged on the pressure plate 3; two fastening rods 302 are respectively located on both sides of the pressing block 401. As shown in fig. 4, two ends of the 25-core vertical surface mount connector of model J63A are provided with fasteners 7, the fasteners 7 are two screw holes, the pins are attached to the surface of the PCB board, and one ends of the screw holes far away from the pins are connected with fastening rods 302. The fastening rod 302 is a screw rod, and the upper end of the fastening rod 302 penetrates out of the pressure plate 3. The perpendicular table of same model pastes the connector and has not co-altitude, highly be less than connector stopper 2 when the perpendicular table pastes the connector highly, use anchorage bar 302 to be connected with perpendicular table subsides connector, thereby make briquetting 401 and clamp plate 3 can provide decurrent pressure for perpendicular table pastes the connector, make perpendicular table paste connector and PCB board butt, when using reflow soldering technology welding, the stitch homoenergetic of perpendicular table subsides connector is welded, the rosin joint can not appear.

The utility model discloses a theory of operation and use flow:

placing the PCB printed with the soldering paste in the groove 101 of the base 1, and connecting the PCB with the mounting screw holes 103 through bolts so as to fix the PCB; the connector limiting block 2 is installed on the base 1 by clamping the square hole 5 of the connector limiting block 2 on the square limiting column 104, the lower surface of the connector limiting block 2 is abutted against the surface of the PCB, and the soldering paste is located in the soldering paste groove 202; then, the fastening rod 302 on the pressing plate 3 is used for connecting with a screw hole of the vertical surface-mounted connector, the pressing plate 3 connected with the vertical surface-mounted connector is clamped on the square limiting column 104 through the square hole 5, and the vertical surface-mounted connector is located in the connector limiting hole 201 at the moment; then, the pressing block 401 is placed above the pressing plate 3, the locking screw 402 is screwed with the screw hole of the square limiting column 104, the locking screw 402 is screwed continuously, the spring 403 sleeved on the locking screw 402 is compressed, the spring 403 generates internal stress to enable the pressing block 401 to press the pressing plate 3 downwards, and the pressing plate 3 presses the vertical surface mount connector on the surface of the PCB. And finally, welding the vertical surface-mounted connector on the PCB by adopting a reflow soldering process. After welding, screwing and detaching the locking screw 402, disconnecting the fastening rod 302 from the screw hole of the vertical surface-mounted connector, and sequentially taking down the pressing block 401, the pressing plate 3 and the connector limiting block 2; and finally, taking down the PCB to complete the welding of the vertical surface-mounted connector.

Claims

1. The utility model provides a take reflow soldering auxiliary device of perpendicular table of fastener to paste connector, a serial communication port, including base (1), set up recess (101) of fixed PCB board on base (1), can dismantle on base (1) and be connected with connector stopper (2), set up on connector stopper (2) and paste connector sliding fit's spacing hole of connector (201) with perpendicular table, the top of connector stopper (2) is provided with clamp plate (3) that are used for compressing tightly the connector, the top of clamp plate (3) is provided with compresses tightly the subassembly.

2. The reflow soldering aid device for the vertical surface-mount connector with the fastener as claimed in claim 1, wherein a through hole is formed in the center of the groove (101), a plurality of support plates (102) are arranged on the side walls of the through hole, and mounting screw holes (103) are formed in the support plates (102).

3. The reflow soldering auxiliary device of the vertical surface-mounted connector with the fastener according to claim 1, wherein a solder paste groove (202) is formed in one side of the connector limiting hole (201) close to the base (1).

4. The reflow soldering auxiliary device of the vertical surface-mount connector with the fastener is characterized in that the base (1) is provided with a square limiting column (104), and the connector limiting block (2) and the pressing plate (3) are provided with square holes (5) which are in sliding fit with the square limiting column (104);

the pressing assembly comprises a pressing block (401) positioned above the pressing plate (3); a locking screw hole (105) arranged at the top end of the square limiting column (104); the locking screw (402) penetrates through the pressing block (401) and the pressing plate (3) and is connected with the screw hole, and the locking screw (402) is in sliding fit with the pressing block (401); the locking screw (402) is sleeved with a spring (403), and the spring (403) is positioned above the pressing block (401).

5. The reflow aid of a vertical surface-mount connector with fastener according to claim 1, wherein the lower surface of the pressure plate (3) is provided with a rubber pad (301).

6. The reflow aid of the vertical surface-mount connector with fastener according to claim 4, wherein the end of the pressing block (401) away from the locking screw (402) is provided with a pressurizing block, and the side of the pressurizing block close to the locking screw (402) is provided with a slope.

7. The reflow soldering auxiliary device of the vertical surface-mounted connector with the fastener is characterized in that the pressure plate (3) is provided with two fastening rods (302) which are matched and connected with the fastener (7) of the connector; the two fastening rods (302) are respectively positioned at two sides of the pressing block (401).