SMT carrier structure

Abstract

The utility model relates to an SMT carrier structure, which comprises a sheet carrier and a bottom plate, the carrier and the bottom plate can be arranged separately, hollow holes are arranged on the carrier in a matrix manner, a plurality of adjusting holes are arranged on one side of the carrier, a plurality of sliding edges are arranged on the bottom plate at positions corresponding to the adjusting holes, the sliding edges and the adjusting holes form a sliding relationship, and the sliding edges are arranged on the bottom plate. A sliding block notch is formed in the side, away from the adjusting hole, of the carrier, a sliding hole is formed in the position, corresponding to the sliding block notch, of the bottom plate, and a sliding block is arranged on the sliding hole. According to the utility model, the design is ingenious, the overall structure is very simple, the thin carrier and the bottom plate are designed, the sliding edges are arranged at the positions, corresponding to the adjusting holes, of the bottom plate, and the sliding edges and the adjusting holes form a sliding relationship, so that the use of bolts is avoided, and the operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of PCB board carriers, specifically to an SMT carrier structure. Background Technology

[0002] With the development of the electronics industry, the assembly of electronic products is moving towards high density, high precision, automation, miniaturization, and low cost. Among related technologies, surface mount technology (SMT) is a new generation of electronic assembly technology that adapts to technological development. In SMT production, in order to save costs, the printed circuit board (PCB) of electronic products is usually designed as a single board without edges. During SMT printing and placement, precise positioning is impossible, resulting in the inability to achieve accurate printing and placement. To solve the problem of the inability to achieve accurate printing and placement on PCBs, a corresponding carrier is usually made, and the PCB is fixed on the carrier before printing and placement, followed by reflow soldering.

[0003] A typical carrier structure includes two thin plates: a base plate and a carrier. These are fixed together with bolts. For example, patent application CN209546043U describes "a general-purpose SMT fixture, including a base plate. The bottom of the base plate has a support, and the upper surface of the base plate has a frame. Positioning holes are provided on both the left and right sides of the frame, and first grooves are provided on the left and right inner walls of the frame. Sliding blocks are provided inside the first grooves. Plates are fixedly connected between two sets of sliding blocks. Two sets of plates are provided, and fixing buckles are installed on the upper surfaces of the front and rear sides of the plates and the frame. Each fixing buckle includes a washer, a first bolt, a second bolt, and a spring. One end of the washer is threadedly connected to the first bolt." Furthermore, the other end of the gasket is threaded with a second bolt, and the spring is sleeved on the outside of the second bolt. Second grooves are provided on the upper surfaces of both the front and rear sides of the plate and frame. The lower end of the first bolt is located inside the second groove. The upper surface of the frame and the upper surface of the plate are fixedly connected by a fixing device, which includes a third bolt, a fourth bolt, and a connecting piece. One end of the connecting piece is fixedly connected to the frame through the cooperation of the third bolt and the positioning hole, and the other end of the connecting piece is fixedly connected to the plate through the fourth bolt. A wristband is installed on one side of the frame. We found this to be a lengthy design, but the overall design is complex. Its main technical content lies in the use of bolt fixing, but its drawbacks are not conducive to operation. Therefore, this invention is hereby applied for. Utility Model Content

[0004] In order to solve the above-mentioned problems in the prior art, the present invention provides an SMT carrier structure that can improve the above deficiencies.

[0005] This utility model relates to an SMT carrier structure, including a thin-film carrier and a base plate. The carrier and the base plate can be separated. The carrier has a matrix of perforated holes. One side of the carrier has multiple adjustment holes. The base plate has multiple sliding edges at positions corresponding to the adjustment holes. The sliding edges and adjustment holes are in a sliding relationship. The side of the carrier away from the adjustment holes has a slider notch. The base plate has a sliding hole at a position corresponding to the slider notch. A slider is mounted on the sliding hole.

[0006] Furthermore, the adjusting hole includes a transverse hole and a longitudinal hole. The longitudinal hole is located near the left end of the transverse hole and intersects the transverse hole perpendicularly. The length of the transverse hole is greater than that of the longitudinal hole. A sliding rib is provided on the base plate at the same position as the transverse hole. The sliding rib protrudes outward from the surface of the base plate. A first protrusion and a second protrusion are provided on the sliding rib. The first protrusion and the second protrusion can slide in contact with the transverse hole. The first protrusion slides at the right end of the transverse hole, and there is an adjustment distance between the right end of the first protrusion and the right end of the transverse hole. The second protrusion slides at the left end of the transverse hole.

[0007] Furthermore, the second slider is semi-circular and has a vertical sidewall. An elastic steel wire is provided on the back of the carrier at the longitudinal hole position. The elastic steel wire is wound and bent into an "U" shape, forming a loop in the middle. The size of the loop is smaller than the width of the transverse hole. The loop contacts the vertical sidewall of the second slider. The two ends of the elastic steel wire are respectively fixed to the upper and lower ends of the longitudinal hole.

[0008] Furthermore, a touch protrusion is provided on the first protrusion, and an extended transverse hole is provided at the left end of the transverse hole.

[0009] Furthermore, the slider notch can form a locking relationship with the slider on the sliding hole.

[0010] This utility model has a clever design and a very simple overall structure. It features a thin-plate carrier and a base plate. Multiple sliding ribs are set at positions corresponding to the adjustment holes on the base plate. These sliding ribs form a sliding relationship with the adjustment holes, avoiding the use of bolts. Its advantage lies in its ease of operation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 for Figure 1 Enlarged view of a portion of the image.

[0013] Figure 3 This diagram shows the contact relationship between the carrier and the base plate at the slider notch.

[0014] Illustration: 1 Carrier, 2 Base plate, 21 Sliding hole, 22 Block, 3 Sliding block notch, 4 Hole hole, 5 Elastic steel wire, 51 Ring part, 6 Sliding edge, 7 First protrusion, 71 Touch protrusion, 9 Second protrusion, 9 Flat side wall, 100 Horizontal hole, 200 Longitudinal hole, 102 Blocking side wall, 101 Extended horizontal hole. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0016] like Figure 1-3 As shown, this utility model relates to an SMT carrier structure, including a thin-film carrier 1 and a base plate 2. The carrier and the base plate can be separated. The carrier is provided with a matrix of hollow holes 4. Multiple adjustment holes are provided on one side of the carrier. Multiple sliding edges 6 are provided on the base plate at positions corresponding to the adjustment holes. The sliding edges and adjustment holes form a sliding relationship. A slider notch 3 is provided on the side of the carrier away from the adjustment holes. A sliding hole 21 is provided on the base plate at a position corresponding to the slider notch. A slider 22 is provided on the sliding hole.

[0017] As a technical improvement, the adjustment hole includes a transverse hole 100 and a longitudinal hole 200. The longitudinal hole is located near the left end of the transverse hole and intersects the transverse hole perpendicularly to form a "+" shape. The length of the transverse hole is greater than that of the longitudinal hole 200. Both ends of the transverse hole and the longitudinal hole are provided with arc-shaped sidewalls. A sliding rib 6 is provided on the base plate at the same position as the transverse hole. The sliding rib protrudes outward from the surface of the base plate. A first protrusion 8 and a second protrusion 7 are provided on the sliding rib. The first protrusion and the second protrusion can slide in contact with the transverse hole. The first protrusion can slide at the right end of the transverse hole. There is an adjustment distance between the right end of the first protrusion and the right end of the transverse hole. The second protrusion can slide at the left end of the transverse hole.

[0018] As a technical improvement, the second slider is semi-circular and has a vertical sidewall 9. An elastic steel wire 5 is provided on the back of the carrier at the longitudinal hole position. The elastic steel wire is wound and bent into an "U" shape, forming a loop 51 in the middle. The size of the loop is smaller than the width of the transverse hole. The loop can contact the vertical sidewall of the second slider during sliding. The two ends of the elastic steel wire are respectively fixed to the upper and lower ends of the longitudinal hole.

[0019] As a technical improvement, a touch protrusion 71 is provided on the first protrusion, and an extended transverse hole 100 is provided at the left end of the transverse hole.

[0020] As a technical improvement, the slider notch can form a locking relationship with the slider on the sliding hole.

[0021] When in use, overlap the carrier and the base plate vertically, insert the first and second protrusions into the transverse holes, and make the vertical side plate of the second protrusion contact the ring. Then slide the carrier to the right. At this time, the spring steel wire is deformed by the force, which will push the carrier to the left. At the same time, the entire carrier is fixed to the base plate by engaging with the slider notch on the base plate. When disassembling, simply release the slider, and the carrier will be released naturally under the action of elasticity, and then the two sides will separate.

Claims

1. An SMT carrier structure, characterized in that: The device includes a carrier and a base plate, which can be separated. The carrier has a matrix of perforated holes and multiple adjustment holes on one side. The base plate has multiple sliding edges at positions corresponding to the adjustment holes, and the sliding edges slide with the adjustment holes. The side of the carrier away from the adjustment holes has a slider notch, and the base plate has a sliding hole at a position corresponding to the slider notch, with a slider mounted on the sliding hole.

2. The SMT carrier structure according to claim 1, characterized in that: The adjusting hole includes a transverse hole and a longitudinal hole. The longitudinal hole is located near the left end of the transverse hole and intersects the transverse hole perpendicularly. The length of the transverse hole is greater than that of the longitudinal hole. A sliding rib is provided on the base plate at the same position as the transverse hole. The sliding rib protrudes outward from the surface of the base plate. A first protrusion and a second protrusion are provided on the sliding rib. The first protrusion and the second protrusion can slide in contact with the transverse hole. The first protrusion slides at the right end of the transverse hole, and there is an adjustment distance between the right end of the first protrusion and the right end of the transverse hole. The second protrusion slides at the left end of the transverse hole.

3. The SMT carrier structure according to claim 1, characterized in that: The second slider is semi-circular and has a vertical sidewall. An elastic steel wire is provided on the back of the carrier at the position of the longitudinal hole. The elastic steel wire is wound and bent into an "U" shape, forming a loop in the middle. The size of the loop is smaller than the width of the transverse hole. The loop contacts the vertical sidewall of the second slider. The two ends of the elastic steel wire are respectively fixed to the upper and lower ends of the longitudinal hole.

4. The SMT carrier structure according to claim 3, characterized in that: The first protrusion is provided with a touch protrusion, and the left end of the transverse hole is provided with an extended transverse hole.

5. The SMT carrier structure according to claim 1, characterized in that: The notch on the slider can be locked in place with the slider on the sliding hole.

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