Energization inspection device

Abstract

To solve the problem that a conventional technology foundation and an energization inspection device similar to the foundation are not that are useless but are largely different from this invention because work efficiency is bad due to an inspection method of vertical operation and even an occurrence of damage of an inspection device itself.SOLUTION: An energization inspection device includes a vertical slide part, a plate cam A part for creating vertical motion of the vertical slide part, an inspection pin holding plate (42) rotatable on the vertical slide part by a hinge, an angle change type measurement part arranged with a plate cam B fixed to a part supporting vertical movement of the slide part, and a stopper part which can automatically hold a height position of a bottom dead point being an inspection position, becomes horizontal when a lever is pressed down from a state in which an operator side of the inspection pin holding plate is open to be vertical movement while remaining horizontal and further, becomes a state in which the inspection pin holding plate holds the bottom dead point even if the operator takes off his hand from the lever when the operator rotates the lever in inspection work to make the inspection pin holding plate (42) reach the bottom dead point and performs energization inspection.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] When conducting electrical testing of circuit boards on which semiconductors and other components are assembled in locations other than those equipped with power sources and air sources, the operator must manually perform the testing using an inspection device. In most electrical testing, a test pin called a contact probe is used to set a workpiece such as a circuit board on a work fixture, and the test pin holding plate with the contact probe is lowered from above so that the contact probe comes into contact with the contact of the object to be tested while pressing it, and the test is performed by passing an electric current through it, but when the object to be tested is set, the test pin holding plate is raised 25 to 35 mm above while remaining horizontal, so the setting space is narrowed and workability is significantly reduced. Also, when the object to be tested is removed, the object may come into contact with the contact probe located above, which may damage the contact probe. The present invention relates to an electrical inspection device (1) in which an operator can move a lever with one hand to move the inspection device up and down, so that an inspection pin holding plate (42) opens as it rises and descends to a horizontal position as it descends, and the contact probe (41) descends vertically from a position just before it comes into contact with the object to be inspected, and the contact position with the object to be inspected is kept perpendicular to the object to be inspected. [Background technology]

[0002] Japanese Patent Publication No. 2014-048172 describes a method in which when an object to be inspected comes into contact with a part to be inspected for inspection, the height of the inspection part of the object to be inspected is not fixed, and the object to be inspected appropriately absorbs the impact with the object to be inspected using the force of a spring, so that the inspection is not impossible.

[0003] Japanese Patent Publication No. 2015-36625 describes a mechanism for correcting warping in the inspection device itself, which prevents normal inspection from being carried out if the item being inspected, such as a printed circuit board, is warped for some reason. [Prior art documents] [Patent documents]

[0004] [Patent Document 2] JP 2014-048172 A [Patent Document 3] JP 2015-36625 A Summary of the Invention [Problem to be solved by the invention]

[0005] The device described in JP 2014-048172 A uses an elastic spring to ensure that multiple inspection pins contact the test object and non-test object evenly, and does not have any mechanism to improve workability or prevent damage to the device.

[0006] The item described in JP 2015-36625 A is an inspection device equipped with a mechanism for correcting warping of the object to be inspected, and is not related to improving workability or improving productivity by preventing damage to the device.

[0007] In the conventional manual inspection device, the operator manually converts the motion into vertical motion by rotating a lever, etc., to lower a plate with contact probes, etc., which contacts the object to be inspected and performs an inspection by applying electricity. However, if the upward stroke is sufficient, it is possible to change the angle widely when setting the object to be inspected at a designated position for inspection and when removing it after the inspection is completed, and this improves workability. In addition, safety is improved because there is no contact with the contact probes that have risen to the top, but since it is manual, the vertical stroke is limited. The lever can be raised to widen the upper space by rotating it multiple times, but this increases the work time and the fatigue of the operator, and does not improve the overall work. Therefore, the objective is to devise and develop a manual electrical inspection device that can change the angle as much as possible with a light movement and a small lever rotation angle (Figure 6A-48), improving workability and safety, and that can reliably change the height position of the inspection pin holding plate (42) during inspection without increasing the work. [Means for solving the problem]

[0008] 1. The present invention has been developed as a method for solving the above problems, which will now be described. A vertical slide section (20) configured to be capable of moving in the vertical direction, a plate cam A section (30) that causes the vertical movement of the vertical slide section, an inspection pin holding plate (42) that can rotate on a hinge (43) on the vertical slide section, an angle-changing measuring section (40) having a plate cam B fixed to a section that supports the vertical movement of the slide section, and a stopper section (50) that can automatically hold the height position of the bottom dead center, which is the inspection position, having When the lever is pressed down from the open position on the operator side of the inspection pin holding plate (Fig. 6-A), it becomes horizontal (Fig. 6-F) and moves vertically while maintaining the horizontal position. Furthermore, when an operator rotates the lever during inspection work and the inspection pin holding plate (42) reaches the bottom dead center, the electrical inspection device holds the inspection pin holding plate at the bottom dead center position even if the operator releases his / her hand from the lever when performing electrical inspection.

[0009] 2. To be more specific, This invention is an inspection device used for manually inspecting electrical connections of circuit boards on which semiconductors and other components are assembled, in a place other than where a power source and air source are installed, and without being affected by voltage, frequency, etc. The worker holds the object to be inspected in one hand and sets it in the designated position for inspection, and the inspection pin holding plate rises while remaining horizontal, but because the gap between the contact probe and the object to be inspected is narrow, the object to be inspected may be scratched or the inspection pin may be damaged. If the inspection pin is damaged, replacing the connected contact probe becomes a difficult task, which delays the inspection work itself. In order to prevent this from happening, the inspection pin holding plate is raised higher to widen the opening, but the increased movement required increases the labor, which results in delays in the work. The angle-changing measuring section (40) and the stopper section (50) of the present invention will now be described with reference to the drawings. See (Figure 4) for the angle-changing measuring section (40). See (Figure 7) for the angle-changing movement. The relationship between the inspection pin holding plate and the height of the vertical slide and the inspection pin holding plate, in which the operator opens and closes the inspection pin holding plate, is that when moving downwards, the inspection pin holding plate (42) gradually becomes horizontal, and when it becomes horizontal, it keeps the horizontality and moves vertically downwards so that the contact probe vertically hits the object to be inspected. The vertical stroke during this varies depending on the size of the object to be inspected and other conditions, but 25 to 35 mm is appropriate. When moving upwards, the opposite is true. The opening angle is preferably 45 to 55 degrees (48) from the horizontal state of the inspection pin holding plate (42), in terms of the relationship between the plate cam B and the vertical stroke. This greatly reduces the risk of scratching the workpiece and damaging the contact probe when removing and attaching the workpiece for inspection. Furthermore, the rotation angle of the lever (32) (48 in FIG. 6-A) for creating the up and down stroke of the up and down sliding part allows for a rotation of around 120 to 160 degrees when the lever angle is set to 0 degrees while maintaining the bottom dead center, making it possible to create a state that is easy for the operator to use. The plate cam B is fixed to the non-operating upper plate (23), and when the vertical sliding portion (20) moves, the follower with a rotation axis and the contact B are able to repeatedly change angle to match the top and bottom of the sliding portion as the contact B follows the plate cam B via the tension spring (47). Next, see the stopper portion (50) (Figure 5). Until the plate cam A reaches the bottom dead center, a force is applied by the compression spring to return the rotation direction of the plate cam A to direction A (55), but once it passes the bottom dead center, the rotation direction of the plate cam A changes to direction B (56), and the plate cam A is pulled toward the rotation direction. By stopping the stop plate (52) arranged on the plate cam A with the stopper (53) at a position 4 to 8 degrees (51) in direction B (56) from that point, the plate cam A is securely fixed, and the plate cam A is held as long as the lever is not rotated upward, and therefore the inspection pin holding plate (42) can continue to be held in the state in which the inspection is performed at the bottom dead center. Effect of the Invention

[0010] This invention is a manual inspection device that can be used in locations other than those equipped with a power source or air source, and is not affected by voltage, frequency, etc., when manually conducting electrical inspections of circuit boards on which semiconductors and other components are assembled. Since a single operation can move up and down, rotate, securely hold the position at the bottom dead center, release the position hold, and hold the position at the top dead center, it is possible to concentrate on the inspection work.

[0011] The position of the board to be inspected varies, but some have a pitch as small as 2 mm, and in order to attach the inspection pins at that interval without contacting them, the contact probe is pressed lightly into an insulator such as POM, Bakelite, or acrylic to fix it in place, and the head side of the contact probe is soldered for connection. If one contact probe is damaged when attaching or detaching a workpiece, it will result in a huge waste of time and will have a major impact on production, so this invention is very effective as it allows the angle to be changed and greatly reduces damage.

[0012] Since it is a fully manual inspection device, it does not have any electrical components or solenoid valves, so it can be brought overseas in an emergency. Since there is no need for on-site wiring or piping work, it is very effective as a countermeasure in emergencies. [Brief description of the drawings]

[0013] [Figure 1] 1A is a top view of a portion of an electrical conductivity inspection device, (B) is a front view of the electrical conductivity inspection device, and (C) is a side view of the electrical conductivity inspection device. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] (A) A diagram of the hinge of the angle-adjustable measuring part, (B) a side view of the angle-adjustable measuring part, and (C) a side view of the angle-adjustable measuring part opened at the top dead end. [Diagram 5] (A) is a diagram of the stopper part fixed at the bottom dead center. (B) is a diagram of plate cam B passing the bottom dead center. [Figure 6] This is a diagram showing the rise of plate cam A and the change in angle of plate cam B in sequence. [Figure 7] This is a diagram showing a fixed plate cam B and angle change. [Figure 8] This is an image of an electrical testing device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] The present invention is an inspection device used when inspecting and checking circuit boards and the like by applying electricity and pressing a contact probe against the input and output positions by about 2 mm. Conventional inspection devices move so that the side to which the contact probe is attached, which is the inspection side, moves vertically or horizontally, that is, returns to the state before or after inspection while maintaining the horizontal position with respect to the workpiece, but the present invention uses two types of plate cams for this movement, and does not require the operator to exert any effort other than operating the lever. When the inspection device is opened, the operator side of the inspection pin holding plate opens 30 degrees to 60 degrees from the horizontal, making it safe and easy to attach and detach the workpiece, greatly reducing damage to the device, and using a bottom dead center fixing method that enables reliable inspection. Therefore, the present invention can be used for various purposes such as an inspection process, an assembly process, and a stamping process. [Explanation of symbols]

[0015] 1. Overall view 20 Up and down slide section 21 Base plate 22 Slide shaft 23 Upper Plate 24 Slide ball bearing 25 Slide ball bearing mounting plate 26 Compression spring 27 Contact A 28 Contact A mounting bracket 30 Plate cam A part 31 Plate Cam A 32 Lever 33 Rotation axis 34 Swivel bearing bracket 40 Angle-changing measuring section 41 Contact Probe 42 Inspection pin holding plate 43 Hinge 44 Plate Cam B 45 Contact B 46 dependent clause 47 Extension spring 48 Angle change angle 50 Stopper part 51 Plate cam B fixed angle 52 Stop plate 53 Stopper 55 Rotation direction A 56 Rotation direction B 57 Bottom dead center

Claims

[Claim 1] An electrical inspection device having a vertical slide portion (20), a plate cam A portion (30), an angle-changing measuring portion (40) and a stopper portion (50), The vertical slide section (20) comprises a horizontally arranged base plate (21), two vertical slide shafts (22), an upper plate (23) arranged so that the upper ends of the slide shafts (22) fit into it, a slide ball bearing mounting plate (25) having two slide ball bearings (24), and a compression spring (26) which moves the slide ball bearing mounting plate (25) upward as a movable part within the vertical slide section (20). The plate cam A section (30) is configured of two slide ball bearings (24), which are movable parts in the vertical slide section (20), and a contact A mounting bracket (28) having a contact A (27) mounted on a slide ball bearing mounting plate (25), as a block for converting the rotation of the plate cam (31) that receives the rotation of the rotating shaft (33) generated by the operation of the lever (32) of the plate cam A section (30) into an up-down movement. The plate cam A section (30) is a device that converts the rotation of the plate cam A (31) into an up-down movement of the slide ball bearing mounting plate (25), and is configured of the plate cam A (31), a lever (32) that rotates the plate cam A (31), a rotating shaft (33) that connects the plate cam A (31) and the lever, and a rotating shaft bracket (34) in which a metal is disposed to receive the rotating shaft. The angle-changing measuring unit (40) is provided with a hinge (43) on the operator side of the slide ball bearing mounting plate (25), and is composed of an inspection pin holding plate (42) having a contact probe (41) whose angle can be changed by the hinge, a plate cam B (44) fixed to the upper plate (23) of the vertical sliding unit (20) and serving as a guide for creating an angle-changing movement, a follower (46) which transmits the movement along the plate cam B (44) to the inspection pin holding plate (42), a contact B (45) provided on the follower which smoothly transmits the angle-changing movement by the plate cam B (44), and a tension spring (47) which brings the follower and the contact B into close contact with the plate cam B (44) and the contact B (45). The stopper portion (50) is a mechanism for changing the angle by rotating the lever (32) and fixing the inspection pin holding plate (42) at the position where the bottom dead center is reached, and is characterized in that it is composed of a stopper (53) that stops the plate cam A (31) when the plate cam A (31) passes the bottom dead center by rotating the lever (32).

Images