Adjustable distance high holding force variable jaw type printed board pulling mechanism

Abstract

The application discloses a variable-distance high-holding-force variable-claw printed board pulling mechanism, which comprises a holding rod, longitudinal distance adjusting rods, transverse distance adjusting rods, rotating shafts, claw fixing strips and variable claws, wherein four variable claws are fixedly connected with four claw fixing strips respectively, every two claw fixing strips are fixedly connected on the two sides of a longitudinal distance adjusting rod, two transverse distance adjusting rods are installed on each longitudinal distance adjusting rod through the rotating shafts, two sliding blocks are embedded in the holding rod, four transverse distance adjusting rods are connected in a head-to-tail mode, and the intersection points of the head-to-tail connection are sequentially located on a longitudinal distance adjusting rod, one sliding block embedded in the holding rod, another longitudinal distance adjusting rod and another sliding block embedded in the holding rod. The main advantages of the application are as follows: the variable-distance, small-gap-reachable, large-grasping-force, flexible-expandable, foldable variable-claw printed board pulling mechanism can realize the claw under a small gap and has the performance of stepless distance adjustment.

Description

Technical Field

[0001] This invention belongs to the technical field of printed circuit board (PCB) extraction mechanisms, specifically relating to an adjustable-distance, high-holding-force variable-claw PCB extraction mechanism. Background Technology

[0002] Currently, many electronic products typically minimize the gap between the side wall of the structural component box and the side of the printed circuit board to make the product smaller and more compact. For products that require multi-layer printed circuit board installation, removing the printed circuit board during subsequent testing and maintenance becomes a problem. If inter-board connectors are used between printed circuit boards, it makes the removal of the printed circuit board even more difficult.

[0003] like Figure 1 As shown, the double-layer printed circuit board box structure has a gap of only 1mm between the printed circuit board 1 and the side wall of the box body 2. There is an inter-board connector between the two printed circuit boards 1. After installation and debugging, it is impossible to remove the printed circuit board 1 for subsequent protection using conventional tools. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an adjustable-gap, high-holding-force variable-claw type printed circuit board extraction mechanism, which can achieve small-gap lowering of the claw and has stepless adjustment characteristics.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An adjustable-pitch, high-holding-force variable-claw type printed circuit board extraction mechanism includes a gripping rod, a longitudinal adjustment rod, a transverse adjustment rod, a rotating shaft, claw fixing strips, and deformable claws. Four deformable claws are fixedly connected to four claw fixing strips respectively. Every two claw fixing strips are fixedly connected to both sides of a longitudinal adjustment rod. Each longitudinal adjustment rod is equipped with two transverse adjustment rods via the rotating shaft. Two sliders are embedded in the gripping rod. The four transverse adjustment rods are connected end to end, and the intersection of the end-to-end connection points is located sequentially at one longitudinal adjustment rod, one slider embedded in the gripping rod, another longitudinal adjustment rod, and another slider embedded in the gripping rod.

[0007] Furthermore, the longitudinal adjusting rod includes two inner rods and an outer rod, with the two inner rods used to pull out in the reverse direction to increase the length of the longitudinal adjusting rod.

[0008] Furthermore, both the inner and outer rods are equipped with a series of threaded holes, the outer rod has a scale and a pre-embedded nut, and the inner rod is limited by a top ball when it is slid out.

[0009] Furthermore, the mounting surface of the claw fixing strip has an elongated hole, and the connecting surface has a non-detachable screw. The elongated hole is fastened to the series of threaded holes of the longitudinal adjusting rod through the screw. The deformable claw is screwed to the claw fixing strip through the non-detachable screw on the claw fixing strip.

[0010] Furthermore, each longitudinal adjusting rod is equipped with two back-to-back lateral adjusting rods to form a set of bidirectional adjusting mechanisms. One grip rod is equipped with two sets of bidirectional adjusting mechanisms. The four lateral adjusting rods contained in the two sets of bidirectional adjusting mechanisms are assembled back-to-back in pairs and fastened to the two sliders embedded in the grip rod with screws and rotating shafts.

[0011] Furthermore, each set of bidirectional adjusting mechanisms is equipped with two lateral adjusting rods and one grip rod. The two lateral adjusting rods are fastened to the longitudinal adjusting rods by threaded screws and rotating shafts, forming an extended bidirectional adjusting mechanism.

[0012] Furthermore, the deformable claw is divided into a fixed side and a deformable side. The fixed side includes a sliding groove, and a fixing pin passes through the sliding groove on the fixed side and the through hole on the deformable side.

[0013] Furthermore, when the triangular forming state is in progress, the fixing pin is pressed to keep the deformable claw in a grasping shape; when the fixing pin is released, the shape of the deformable side is changed by moving the fixing pin in the sliding groove on the deformable side, and the fixing pin is pressed to keep the deformable claw in a lower claw shape when the deformable claw is adjusted to the required thickness.

[0014] Furthermore, when the inner and outer longitudinal adjusting rods coincide to their shortest state and the two longitudinal adjusting rods are pushed closer together, the printed circuit board removal mechanism becomes foldable.

[0015] Furthermore, the deformable claw body is formed by bending high-quality carbon structural steel strip, the grip rod is made of aluminum profile, and the pivot is made of non-metallic wear-resistant material.

[0016] The beneficial effects of this invention are as follows:

[0017] The longitudinal adjusting rod is adjustable in length, and the lateral adjusting rod is adjustable in angle, enabling stepless adjustment of the longitudinal and lateral distances of the deformable claw. After processing, the deformable claw can be stretched and deformed into a double-layer thin strip, and then restored to its original shape after passing through a small gap. The deformable claw is bent into a stable triangle that can withstand high compressive forces. The longitudinal adjusting rod has a spare mounting nut, which can be used to expand the installation of the lateral adjusting rod and grip rod as needed. The height clearance design minimizes the folding of all rods, making it easy to store and organize. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a double-layer printed circuit board box structure in the prior art;

[0019] Figure 2 This is a folding schematic diagram of an adjustable-distance, high-holding-force variable-claw type printed circuit board extraction mechanism provided by the present invention.

[0020] Figure 3 This invention provides a diagram illustrating the usage state of an adjustable-distance, high-holding-force, variable-claw type printed circuit board extraction mechanism.

[0021] Figure 4 A front view of an adjustable-pitch, high-holding-force, variable-claw type printed circuit board pick-up mechanism in use;

[0022] Figure 5 A side view of an adjustable-pitch, high-holding-force, variable-claw type printed circuit board pick-up mechanism in use.

[0023] Figure 6 A bottom view of an adjustable-pitch, high-holding-force, variable-claw type printed circuit board pick-up mechanism in use;

[0024] Figure 7 This invention provides an extended state schematic diagram of an adjustable-distance, high-holding-force variable-claw type printed circuit board extraction mechanism.

[0025] Figure 8 This is a diagram showing the state of the deformable claw.

[0026] Figure 9 Stress cloud diagram of the deformable claw in use;

[0027] Figure 10 This is a schematic diagram illustrating the application of an adjustable-distance, high-holding-force variable-claw type printed circuit board extraction mechanism.

[0028] Figure label:

[0029] 1. Printed circuit board, 2. Box body, 3. Deformable claw, 4. Claw fixing strip, 5. Longitudinal adjustment rod, 6. Lateral adjustment rod, 7. Handle, 8. Shaft. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 2-3 The diagram shown is a schematic of an adjustable-distance, high-holding-force variable-claw type printed circuit board removal mechanism provided by the present invention. The mechanism includes:

[0032] The structure includes a grip bar 7, two longitudinal adjusting rods 5, four transverse adjusting rods 6, four rotating shafts 8, four claw fixing strips 4, four deformable claws 3, and all structural components are connected by screws.

[0033] The mounting surface of the claw fixing strip 4 has an elongated hole, and the connecting surface has a non-detachable screw. The elongated hole is fastened to the longitudinal adjusting rod 5 series threaded hole to achieve installation. The deformable claw 3 is fastened to the claw fixing strip 4 by the non-detachable screw on the claw fixing strip 4.

[0034] The longitudinal adjusting rod 5 consists of two inner rods and an outer rod. The inner rod can be pulled out to increase the overall length of the longitudinal adjusting rod 5. Both the inner and outer rods have a series of threaded holes. The outer rod has a scale and a pre-embedded nut. The inner rod has a handle that can be slid out and is limited by a top ball. The claw fixing strip 4 is fastened to the series of threaded holes of the longitudinal adjusting rod 5 with screws. The threaded hole can be selected according to the scale on the longitudinal adjusting rod 5 based on the size of the printed circuit board. If the size of the printed circuit board exceeds the length of the outer rod of the longitudinal adjusting rod 5, the inner rod of the longitudinal adjusting rod 5 can be pulled out and limited by a top ball before the claw fixing strip 4 is fixed to the inner rod of the longitudinal adjusting rod 5. Two claw fixing strips 4 and two deformable claws 3 are evenly arranged on each longitudinal adjusting rod 5 (because each deformable claw 3 corresponds one-to-one with a claw fixing strip 4).

[0035] like Figures 4-6 The invention presents three views of an adjustable-pitch, high-holding-force, variable-claw type printed circuit board extraction mechanism in use, to more clearly illustrate the structure of the invention. The grip 7 has sealing caps at both ends, with two embedded sliders containing nuts. The transverse adjustment rod 6 has round holes at both ends; one end is fastened to one of the embedded sliders in the grip 7 via screws and a rotating shaft 8, and the other end is fastened to the nuts pre-embedded in the longitudinal adjustment rod 5 via screws and a rotating shaft 8. Each longitudinal adjustment rod 5 is equipped with two back-to-back transverse adjustment rods 6, forming a bidirectional adjustment mechanism. That is, a bidirectional adjustment mechanism includes one longitudinal adjustment rod 5 and two transverse adjustment rods 6. Preferably, one end of the two back-to-back transverse adjustment rods 6 overlaps at the middle position of the longitudinal adjustment rod 5 via screws and a rotating shaft 8, and the other ends of the two back-to-back transverse adjustment rods 6 are respectively adapted to the two embedded sliders in the grip 7.

[0036] The grip 7 is equipped with two sets of bidirectional adjustment mechanisms. The two sets of bidirectional adjustment mechanisms include four transverse adjustment rods 6. The four transverse adjustment rods 6 are assembled in pairs facing away from each other and are fastened to the slider embedded in the grip 7 by screws and rotating shafts 8. That is, the four transverse adjustment rods 6 are assembled end to end in sequence, and the intersection point of the end is located at one longitudinal adjustment rod 5, one slider embedded in the grip 7, another longitudinal adjustment rod 5, and another slider embedded in the grip 7.

[0037] As described above, the structure of this invention allows for stepless adjustment of the claw distance in both the horizontal and vertical directions, and the length of all rods can be customized in a series to accommodate a wider range of printed circuit boards.

[0038] A set of bidirectional adjusting mechanisms can be supplemented with two lateral adjusting rods 6, which are fastened to the longitudinal adjusting rod 5 via through screws and rotating shafts 8, forming an extended bidirectional adjusting mechanism. Figure 7As shown, the extended bidirectional adjusting mechanism includes a longitudinal adjusting rod 5 and four transverse adjusting rods 6. The transverse adjusting rods 6 are divided into groups A and B according to their different connection nuts with the longitudinal adjusting rod 5. Both groups A and B have two transverse adjusting rods 6 installed in opposite directions, which are respectively connected to two grip rods 7. The two transverse adjusting rods 6 in each group are respectively connected to two sliders of the same grip rod 7, forming an extended form of the printed circuit board picking mechanism.

[0039] like Figure 8 As shown, the deformable claw 3 has a claw-shaped fixing pin and a threaded hole at the mounting end. The deformable claw 3 is divided into a fixed side and a deformable side. The fixed side includes a sliding groove, and the fixing pin passes through the sliding groove on the fixed side and the through hole on the deformable side. When the claw is in the triangular forming state, pressing the fixing pin can keep the deformable claw 3 in the grasping shape. When the fixing pin is released, the fixing pin and the deformable side can be moved within the sliding groove on the deformable side. When the deformable claw 3 is adjusted to a suitable thickness, pressing the fixing pin can keep the deformable claw 3 in the lower claw shape.

[0040] When the inner and outer rods of the longitudinal adjusting lever 5 are aligned to their shortest state, and the two longitudinal adjusting levers 5 are pushed closer together, the printed circuit board extraction mechanism can be folded. Figure 2 The folded state shown makes it easy to store.

[0041] Furthermore, the deformable claw 3 body is made of high-quality carbon structural steel strip bent into shape, the grip bar 7 is made of mature aluminum profile, the pivot 8 is made of non-metallic wear-resistant material, and the remaining structural parts are all made of stainless steel plates bent and welded into shape.

[0042] Figure 9 The stress cloud diagram is shown for the deformable claw 3 when gripping the printed circuit board. It is assumed that the force on a single claw is 10N and the maximum stress of the structure is 350MPa, which is much smaller than the material yield stress of 650MPa.

[0043] Figure 10 This is a schematic diagram of the application of the adjustable distance high holding force variable claw type printed circuit board extraction mechanism of the present invention. It can be seen that it does not occupy a large space and is more suitable for engineering applications.

[0044] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable-distance, high-holding-force variable-claw type printed circuit board extraction mechanism, comprising a gripping rod, a longitudinal adjusting rod, a transverse adjusting rod, a rotating shaft, a claw fixing bar, and a deformable claw, characterized in that... The four deformable claws are fixedly connected to the four claw fixing strips respectively. Every two claw fixing strips are fixedly connected to both sides of a longitudinal adjusting rod. Each longitudinal adjusting rod is equipped with two transverse adjusting rods through a rotating shaft. The handle has two sliders embedded in it. The four transverse adjusting rods are connected end to end, and the intersection of the end to end is located sequentially at a longitudinal adjusting rod, a slider embedded in the handle, another longitudinal adjusting rod, and another slider embedded in the handle. The deformable claw is divided into a fixed side and a deformable side. The fixed side includes a sliding groove, and a fixing pin passes through the sliding groove on the fixed side and the through hole on the deformable side. The deformable claw is bent into a stable triangle. When the triangle is formed, the fixing pin is pressed to keep the deformable claw in a grasping shape. The deformable claw can be stretched and deformed into a double-layer thin strip. When the fixing pin is released, the shape of the deformable side is changed by moving the fixing pin in the sliding groove on the deformable side. When the deformable claw is adjusted to the required thickness, the fixing pin is pressed to keep the deformable claw in a lower claw shape.

2. The adjustable-distance high-holding-force variable-claw type printed circuit board extraction mechanism according to claim 1, characterized in that, The longitudinal adjusting rod includes two inner rods and an outer rod. The two inner rods are used to pull out in the opposite direction to increase the length of the longitudinal adjusting rod.

3. The adjustable-distance high-holding-force variable-claw type printed circuit board extraction mechanism according to claim 2, characterized in that, Both the inner and outer rods have a series of threaded holes. The outer rod has a scale and a pre-embedded nut. When the inner rod is slid out, it is limited by a top ball.

4. The adjustable-distance, high-holding-force variable-claw type printed circuit board extraction mechanism according to claim 1, characterized in that, The mounting surface of the claw fixing strip has an oblong hole, and the connecting surface has a non-detachable screw. The oblong hole is fastened to the series of threaded holes of the longitudinal adjustment rod. The deformable claw is fastened to the claw fixing strip by screwing the non-detachable screw on the claw fixing strip.

5. The adjustable-distance, high-holding-force variable-claw type printed circuit board extraction mechanism according to claim 1, characterized in that, Each longitudinal adjusting rod is equipped with two opposing transverse adjusting rods to form a bidirectional adjusting mechanism. One grip rod is equipped with two bidirectional adjusting mechanisms. The four transverse adjusting rods in the two bidirectional adjusting mechanisms are assembled in pairs facing away from each other and fastened to the two sliders embedded in the grip rod by screws and rotating shafts.

6. The adjustable-distance high-holding-force variable-claw type printed circuit board extraction mechanism according to claim 5, characterized in that, Each set of bidirectional adjustment mechanisms adds two lateral adjustment rods and one handle. The two lateral adjustment rods are fastened to the longitudinal adjustment rods by through screws and rotating shafts through pre-reserved back nuts, forming an extended bidirectional adjustment mechanism.

7. The adjustable-distance high-holding-force variable-claw type printed circuit board extraction mechanism according to claim 1, characterized in that, When the inner and outer rods of the longitudinal adjusting rod coincide to the shortest state, and the two longitudinal adjusting rods are pushed close, the printed circuit board removal mechanism becomes foldable.

8. The adjustable-distance, high-holding-force variable-claw type printed circuit board extraction mechanism according to claim 1, characterized in that, The deformable claw body is formed by bending high-quality carbon structural steel strip, the grip rod is made of aluminum profile, and the pivot is made of non-metallic wear-resistant material.

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