Turnover type synchronous pressing device for testing multiple groups of navigation modules

Abstract

The invention discloses an overturning type synchronous pressing device for testing multiple groups of navigation modules, which comprises a test platform, at least two groups of horizontal navigation module test board cards are arranged on the test platform in parallel, and a plurality of navigation module clamping grooves are formed in the upper side of each navigation module test board card in an array manner; the navigation module clamping grooves are matched with the contours of the tested navigation modules, and one tested navigation module is placed in each navigation module clamping groove; and the consistency of the pressing strength of a plurality of tested navigation modules is improved.

Description

Technical Field

[0001] The invention belongs to the field of component testing fixtures. Background Art

[0002] Using the test platform to test multiple navigation modules simultaneously can save test time, improve efficiency, increase output, and reduce equipment asset investment. Synchronous testing can effectively improve the consistency of detection, eliminate the scrapping of final products due to personnel omissions, and prevent defective products from entering the market, which is convenient for quality control. Test data is uploaded to the backup server in real time, which is safe, efficient and easy to trace.

[0003] The flip-cover test fixture is the most common navigation module test fixture. The principle is that there are a number of pressure columns 14 structures corresponding to the navigation modules 13 under test on the flip cover, such as Figure 2 As shown, when the flip cover is closed downward, the plurality of pressing columns 14 will press down the corresponding navigation modules 13 under test one by one, so that the plurality of electrical contacts at the bottom of the navigation module 13 under test and the plurality of electrical pins 22 at the bottom of the navigation module slot 21 are stably electrically connected one by one;

[0004] Since the distances between the pressure posts 14 and the axis of the hinge 5 on this flip-cover structure are inconsistent, the stroke and speed of the pressure posts 14 cannot be guaranteed to be consistent during the closing process. Therefore, it is impossible to ensure the consistency of the pressure strength of several pressure posts 14 on several tested navigation modules 13 when the cover is just closed. Summary of the invention

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a flip-type synchronous pressing device for testing multiple groups of navigation modules to improve the consistency of the pressing strength of several tested navigation modules.

[0006] Technical solution: To achieve the above-mentioned purpose, the flip-type synchronous pressing device for testing multiple groups of navigation modules of the present invention comprises a test platform, on which at least two groups of horizontal navigation module test boards are arranged in parallel, and each navigation module test board is provided with a plurality of navigation module slots in an array on its upper side, the navigation module slots are adapted to the contour of the tested navigation module, and a tested navigation module is placed in each navigation module slot;

[0007] A flip cover is arranged above the test platform, and the flip cover includes a pressure plate, and a flip frame is integrally fixedly arranged on the outer periphery of the pressure plate, and one end of the flip frame is hinged to the upper edge of the test platform through a hinge;

[0008] There are several pressure columns arranged in an array on the lower side of the pressure plate, each of which corresponds to a navigation module under test; when the flip frame flips down around the hinge above the test platform to be just horizontal, the several pressure columns correspond one by one to the top of the several navigation modules under test.

[0009] Furthermore, when the upper portion of the tested navigation module is pressurized, a plurality of electrical contacts at the bottom of the tested navigation module are stably electrically connected with a plurality of electrical pins at the bottom of the navigation module slot in a one-to-one correspondence.

[0010] Furthermore, positioning feet are fixedly provided on the lower sides of both sides of the flip frame. When the flip frame flips downward to a horizontal position around the hinge, the lower end of each positioning foot just contacts the upper surface of the test platform.

[0011] Furthermore, a locking hole is provided on one side of the flip frame, and it also includes an electric lock fixedly installed on the surface of the test platform, the electric lock includes a lock tongue that can perform a telescopic movement; when the flip frame flips downward around the hinge to be just horizontal, the lock tongue of the electric lock can extend to be inserted into the locking hole, thereby locking the flip frame.

[0012] Furthermore, a pressure chamber is provided at the bottom of the pressure column, and an elastic pressure sheet is provided at the bottom end of the pressure chamber along the contour seal. When the pressure in the pressure chamber increases, the elastic pressure sheet expands downward.

[0013] Further, an articulated seat a is fixedly provided at the lower part of one side of the flip frame, and an articulated seat b is fixedly provided at the upper part of the test platform; an oblique cylinder damping passive expansion device is provided at the upper side of the test platform, an articulated seat a is fixedly provided at the lower part of one side of the flip frame, and an articulated seat b is fixedly provided at the upper part of the test platform;

[0014] The cylinder damping passive expansion joint comprises a coaxial cylinder, a piston and a push rod, one end of the push rod is integrally fixedly connected to the piston, the piston moves on the inner wall of the cylinder, the other end of the push rod is integrally provided with an upper connecting seat, one side of the upper connecting seat is vertically fixed with an articulated shaft a, the bottom end of the cylinder is integrally connected with a lower connecting seat, one side of the lower column seat is vertically fixedly connected with an articulated shaft b, and the articulated shaft a and the articulated shaft b are rotatably connected to the articulated seat a and the articulated seat b respectively.

[0015] Furthermore, a cylinder compartment is formed between the piston and the lower connecting seat.

[0016] Furthermore, an air guide channel a is provided inside the integrated structure formed by the piston, the push rod and the upper connecting seat along the length direction, one end of the air guide channel a is a one-way guide end, one end of the air guide channel a is connected to the cylinder bin through a one-way valve in the one-way guide end, the one-way valve only allows the gas in the air guide channel a to enter the cylinder bin through the one-way guide end, the other end of the air guide channel a is connected to one end of the air guide hose, and the other end of the air guide hose is connected to the air pressure bins in each pressure column through a plurality of shunt pipes on the pressure plate;

[0017] The inner wall of the cylinder bin is provided with a limited inner edge, and the cylinder barrel is provided with a gas guide channel b along the length direction inside the wall body at the position of the limited inner edge, and the two ends of the gas guide channel b are respectively recorded as the gas guide channel end a and the gas guide channel end b; the gas guide channel end a and the gas guide channel end b are both on the inner wall surface of the cylinder bin and distributed on both sides of the limited inner edge;

[0018] Two O-rings are arranged in the two sealing ring grooves on the outer peripheral surface of the piston, and the piston is slidably sealed with the inner wall of the cylinder barrel through the two O-rings;

[0019] An air guide channel c is arranged in the piston along the radial direction, the end of the air guide channel c close to the piston axis is connected to one side of the air guide channel a, and the end of the air guide channel c away from the piston axis is connected to the annular gap formed between the two O-rings;

[0020] When the piston just contacts the inner edge of the limit position, the flip frame is just in a horizontal state, and the annular gap formed between the two O-rings just connects to the air guide channel a end of the air guide channel b.

[0021] Beneficial effect: when the flip frame flips downward around the hinge above the test platform to be just horizontal, the piston just contacts the inner edge of the limit, and the annular gap formed between the two O-rings just connects to the air guide channel a end of the b air guide channel; at this time, the c air guide channel directly connects the compressed gas in the cylinder warehouse with the a air guide channel. Therefore, at this time, the compressed gas in the cylinder warehouse is connected to the air pressure warehouse in each pressure column through the b air guide channel, the c air guide channel and a number of shunt pipes in turn, so that the pressure in the air pressure warehouse in each pressure column increases synchronously, and then the elastic pressure sheet at the lower end of each pressure column expands downward into an elastic downward convex pressure body and elastically presses downward on the corresponding upper part of the navigation module under test, so that the upper parts of the several navigation modules under test are subjected to the same intensity of pressure at the same time. When the upper parts of the navigation modules under test are subjected to the same intensity of pressure, the several electrical contacts at the bottom of the navigation modules under test are stably electrically connected with the several electrical pins at the bottom of the navigation module slot in a one-to-one corresponding manner, thereby achieving a uniform and highly consistent clamping strength process before testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0023] Figure 2 is a schematic diagram of the structure of any pressure column on the pressure plate;

[0024] Figure 3 Schematic diagram of two states of the compression column;

[0025] Figure 4 It is a cutaway schematic diagram of the cylinder damping passive expansion device when the flip cover is opened;

[0026] Figure 5It is a cutaway schematic diagram of the cylinder damping passive expansion device when the flip gland is closed;

[0027] Figure 6 Schematic diagram of the test platform surface structure;

[0028] Figure 7 This is a schematic diagram of a navigation module test board being separated from several tested navigation modules. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] As attached Figures 1 to 7 The flip-type synchronous pressing device for multiple groups of navigation module fast testing is shown in FIG. Figure 1 , including a test platform 11, on which at least two groups of horizontal navigation module test boards 4 are arranged in parallel, each navigation module test board 4 is provided with a plurality of navigation module slots 21 in an array on its upper side, each navigation module test board 4 has 8 navigation module slots 21, the navigation module slots 21 are adapted to the contour of the tested navigation module 13, and a tested navigation module 13 is placed in each navigation module slot 21; a flip cover 41 is arranged above the test platform 11, and the flip cover 41 includes a pressure plate 2, and the pressure plate 2 has an outer A flip frame 6 is fixedly provided on the whole body, and one end of the flip frame 6 is hinged to the upper edge of the test platform 11 through a hinge 5, so that the flip frame 6 can be flipped around the hinge 5 above the test platform 11; a handle 1 is provided at the end of the flip frame 6 away from the hinge 5; a plurality of pressure columns 14 are distributed in an array on the lower side of the pressure plate 2, and each pressure column 14 corresponds to a navigation module 13 under test; when the flip frame 6 is flipped downward around the hinge 5 above the test platform 11 to be just horizontal, the plurality of pressure columns 14 correspond one by one to the top of the plurality of navigation modules 13 under test.

[0031] like Figure 7 A plurality of electrical pins 22 made of elastic metal material are distributed at the bottom of the navigation module slot 21, and the plurality of electrical pins 22 correspond one-to-one to the plurality of electrical contacts at the bottom of the navigation module 13 under test. The lower portion of the navigation module 13 under test is limited in the navigation module slot 21, and when the upper portion of the navigation module 13 under test is pressurized, the plurality of electrical contacts at the bottom of the navigation module 13 under test correspond one-to-one to the plurality of electrical pins 22 at the bottom of the navigation module slot 21 to form a stable electrical connection; thereby ensuring the stability of the electrical connection during the test.

[0032] like Figure 1Positioning feet 3 are fixedly provided on the lower sides of both side edges of the flip frame 6. When the flip frame 6 is flipped downward to a horizontal position around the hinge 5, the lower end of each positioning foot 3 just contacts the upper surface of the test platform 11; a locking hole 9 is provided on one side of the flip frame 6, and also includes an electric lock 10 fixedly installed on the surface of the test platform 11, and the electric lock 10 includes a lock tongue that can perform a telescopic action; when the flip frame 6 is flipped downward to a horizontal position around the hinge 5, the lock tongue of the electric lock 10 can extend to be inserted into the locking hole 9, thereby locking the flip frame 6.

[0033] The above structure enables this test platform to test multiple navigation modules at the same time, saving test time, improving efficiency, increasing output, and reducing equipment asset investment. Using an automatic test system to test products can prevent the scrapping of final products due to personnel omissions and prevent defective products from entering the market, which is convenient for quality control. Test data is uploaded to the backup server in real time, which is safe, efficient and easy to trace. Since the distance between each pressure column 14 and the axis of the hinge 5 on this flip-top structure is inconsistent, the stroke and speed of each pressure column 14 cannot be guaranteed to be consistent during the closing process. Therefore, it is impossible to ensure the consistency of the pressure strength of several pressure columns 14 on several tested navigation modules 13 when the cover is just closed, so the following structure is designed:

[0034] like Figure 2 and 3 As shown, a pressure chamber 25 is provided at the bottom of each pressure column 14, and an elastic pressure sheet 24 made of rubber or latex is provided along the contour seal at the bottom end of the pressure chamber 25. When the pressure in the pressure chamber 25 increases, the elastic pressure sheet 24 expands downward.

[0035] An articulated seat a 7 is fixedly provided at the lower part of one side of the flip frame 6, and an articulated seat b 12 is fixedly provided on the upper side of the test platform 11; an oblique cylinder damping passive telescope 91 is provided on the upper side of the test platform 11, and an articulated seat a 7 is fixedly provided at the lower part of one side of the flip frame 6, and an articulated seat b 12 is fixedly provided on the upper side of the test platform 11.

[0036] like Figure 5 and 6As shown, the cylinder damping passive expansion joint 91 comprises a coaxial cylinder barrel 18, a piston 28 and a push rod 17, one end of the push rod 17 is integrally fixedly connected to the piston 28, the piston 28 moves on the inner wall of the cylinder barrel 18, the other end of the push rod 17 is integrally provided with an upper connecting seat 16, one side of the upper connecting seat 16 is vertically fixed with an a hinge shaft 15, the bottom end of the cylinder barrel 18 is integrally connected with a lower connecting seat 20, one side of the lower column seat 20 is vertically fixedly provided with a b hinge shaft 19, the a hinge shaft 15 and the b hinge shaft 19 are rotatably connected to the a hinge seat 7 and the b hinge seat 12 respectively; a gas joint is formed between the piston 28 and the lower connecting seat 20 Cylinder bin 31; an integrated structure consisting of the piston 28, the push rod 17, and the upper connecting seat 16 is provided with an a gas guide channel 26 along the length direction, one end of the a gas guide channel 26 is a one-way conducting end 26a, one end of the a gas guide channel 26 is connected to the cylinder bin 31 through a one-way valve 27 in the one-way conducting end 26a, the one-way valve 27 only allows the gas in the a gas guide channel 26 to enter the cylinder bin 31 through the one-way conducting end 26a, the other end of the a gas guide channel 26 is connected to one end of the gas guide hose 8, and the other end of the gas guide hose 8 is connected to the air pressure bin 25 in each pressure column 14 through a plurality of shunt pipes 23 on the pressure plate 2.

[0037] The inner wall of the cylinder bin 31 is provided with a limiting inner edge 32, and the cylinder barrel 18 is provided with a b air guide channel 33 along the length direction inside the wall body at the position of the limiting inner edge 32, and the two ends of the b air guide channel 33 are respectively recorded as the air guide channel a end 33a and the air guide channel b end 33b; the air guide channel a end 33a and the air guide channel b end 33b are both on the inner wall surface of the cylinder bin 31, and are distributed on both sides of the limiting inner edge 32.

[0038] Two O-rings 30 are arranged in the two sealing ring grooves on the outer circumferential surface of the piston 28, and the piston 28 is slidably sealed with the inner wall of the cylinder barrel 18 through the two O-rings 30; a c air guide channel 29 is arranged in the piston 28 along the radial direction, and the end of the c air guide channel 29 close to the axis of the piston 28 is connected to one side of the a air guide channel 26, and the end of the c air guide channel 29 away from the axis of the piston 28 is connected to the narrow annular gap 100 formed between the two O-rings 30; when the piston 28 just contacts the limit inner edge 32, the flip frame 6 is just in a horizontal state, and the annular gap 100 formed between the two O-rings 30 is just connected to the air guide channel a end 33a of the b air guide channel 33.

[0039] Working process and detailed working principle: Step 1, in the initial state, the flip cover 41 is in an upward open state, the piston 28 is away from the limit inner edge 32, the cylinder bin 31 and the air pressure bin 25 in each pressure column 14 are all in a normal pressure state, and the annular gap 100 between the two O-rings 30 is in a completely closed state. At this time, due to the presence of the one-way valve 27, the cylinder bin 31 is also equivalent to a fully sealed state. When accidental factors such as gravity and accidental collision make the flip cover 41 tend to swing downward around the hinge 5, the gas in the cylinder bin 31 forms a damping for the downward displacement of the piston 28, thereby avoiding the situation where the flip cover 41 spontaneously and quickly flips downward under gravity and accidental collision.

[0040] Step 2: placing a plurality of navigation modules 13 to be tested into a plurality of navigation module slots 21 one by one;

[0041] Step three, push the handle 1 downward with force, forcing the flip frame 6 to flip downward around the hinge 5 above the test platform 11. At the same time, the angle between the axis of the cylinder damping passive retractor 91 and the horizontal plane gradually decreases, so that the piston 28 gradually compresses the cylinder bin 31. The increased air pressure in the cylinder bin 31 forms a certain damping effect on the piston 28, which prevents the flip cover 41 from colliding due to excessive movement. At the same time, due to the presence of the one-way valve 27, the gas in the cylinder bin 31 will not flow into the a air guide channel 26 through the one-way guide end 26a during the process of being compressed by the piston 28. Therefore, during the gradual compression of the gas in the cylinder bin 31, the air pressure bin 25 in each pressure column 14 is always in a normal pressure state;

[0042] Step 4: When the position sensor recognizes that the flip frame 6 flips down around the hinge 5 above the test platform 11 to be just horizontal, the lock tongue of the electric lock 10 immediately extends to be inserted into the locking hole 9, thereby locking the flip frame 6. At this time, the cylinder damping passive retractor 91 is still not completely horizontal;

[0043] At the same time, the piston 28 just contacts the limit inner edge 32, and the annular gap 100 formed between the two O-rings 30 just connects the air channel a end 33a of the b air channel 33; at this time, the c air channel 29 directly connects the compressed gas in the cylinder bin 31 with the a air channel 26, so at this time, the compressed gas in the cylinder bin 31 is connected to the air pressure bins 25 in each pressure column 14 through the b air channel 33, the c air channel 29 and a plurality of shunt pipes 23 in turn, so that the pressure in the air pressure bins 25 in each pressure column 14 is synchronized. The pressure of the pressure column 14 is increased, and the elastic pressing sheet 24 at the lower end of each pressing column 14 expands downward to form an elastic downward convex pressing body 24a, and elastically presses downward the upper part of the corresponding navigation module 13 under test, so that the upper parts of several navigation modules 13 under test are subjected to the same intensity of pressure at the same time. When the upper parts of the navigation modules 13 under test are subjected to the same intensity of pressure, the several electrical contacts at the bottom of each navigation module 13 under test are stably electrically connected with the several electrical pins 22 at the bottom of the navigation module card slot 21 in a one-to-one corresponding manner, and the uniform and consistent clamping pressure process before the test is completed;

[0044] Step 5, simultaneously power on the navigation module 13 and perform synchronous detection;

[0045] Step 6, after the detection is completed, the lock tongue of the electric lock 10 is immediately removed from the locking hole 9. Since the cylinder chamber 31 is still under positive pressure at this time, the flip cover 41 automatically flips upward and opens under the thrust of the piston.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A flip-type synchronous pressing device for testing multiple navigation modules, characterized in that: The test platform (11) comprises at least two groups of horizontal navigation module test boards (4) arranged in parallel on the test platform (11); a plurality of navigation module card slots (21) are arranged in an array on the upper side of each navigation module test board (4); the navigation module card slots (21) are adapted to the contour of the navigation module (13) to be tested; and a navigation module (13) to be tested is placed in each navigation module card slot (21); A flip cover (41) is arranged above the test platform (11), the flip cover (41) comprises a pressure plate (2), a flip frame (6) is integrally fixedly arranged on the outer periphery of the pressure plate (2), and one end of the flip frame (6) is hinged to the upper edge of the test platform (11) via a hinge (5); A plurality of pressure columns (14) are arranged in an array on the lower side of the pressure plate (2), and each pressure column (14) corresponds to a navigation module (13) under test; when the flip frame (6) flips downward around the hinge (5) above the test platform (11) to be exactly horizontal, the plurality of pressure columns (14) correspond one by one to the top of the plurality of navigation modules (13) under test.

2. The flip-type synchronous pressing device for testing multiple navigation modules according to claim 1, characterized in that: When the upper part of the tested navigation module (13) is pressed, a plurality of electrical contacts at the bottom of the tested navigation module (13) are stably electrically connected in a one-to-one correspondence with a plurality of electrical pins (22) at the bottom of the navigation module slot (21).

3. The flip-type synchronous pressing device for testing multiple navigation modules according to claim 1, characterized in that: Positioning feet (3) are fixedly provided on the lower sides of both side edges of the flip frame (6); when the flip frame (6) flips downward to a horizontal position around the hinge (5), the lower end of each positioning foot (3) just contacts the upper surface of the test platform (11).

4. The flip-type synchronous pressing device for testing multiple navigation modules according to claim 1, characterized in that: The flip frame (6) is provided with a locking hole (9) on one side thereof, and further comprises an electric lock (10) fixedly mounted on the surface of a test platform (11), wherein the electric lock (10) comprises a locking tongue capable of telescopic movement; when the flip frame (6) flips downward around the hinge (5) to a horizontal position, the locking tongue of the electric lock (10) can extend to be inserted into the locking hole (9), thereby locking the flip frame (6).

5. The flip-type synchronous pressing device for testing multiple navigation modules according to claim 1, characterized in that: A pressure chamber (25) is provided at the bottom of the pressure column (14), and an elastic pressing sheet (24) is provided at the bottom end of the pressure chamber (25) along the contour seal. When the pressure in the pressure chamber (25) increases, the elastic pressing sheet (24) expands downward.

6. The flip-type synchronous pressing device for testing multiple navigation modules according to claim 5, characterized in that: An a-hinged seat (7) is fixedly provided at the lower part of one side of the flip frame (6), and a b-hinged seat (12) is fixedly provided at the upper side of the test platform (11); an oblique cylinder damping passive expansion device (91) is provided at the upper side of the test platform (11); an a-hinged seat (7) is fixedly provided at the lower part of one side of the flip frame (6), and a b-hinged seat (12) is fixedly provided at the upper side of the test platform (11); The cylinder damping passive telescopic device (91) comprises a coaxial cylinder barrel (18), a piston (28) and a push rod (17), one end of the push rod (17) is integrally fixedly connected to the piston (28), and the piston (28) moves on the inner wall of the cylinder barrel (18). The other end of the push rod (17) is integrally provided with an upper connecting seat (16), and an a hinge shaft (15) is vertically fixed on one side of the upper connecting seat (16). The bottom end of the cylinder barrel (18) is integrally connected to a lower connecting seat (20), and a b hinge shaft (19) is vertically fixedly connected on one side of the lower column seat (20). The a hinge shaft (15) and the b hinge shaft (19) are rotatably connected to the a hinge seat (7) and the b hinge seat (12) respectively.

7. The flip-type synchronous pressing device for testing multiple navigation modules according to claim 6, characterized in that: A cylinder chamber (31) is formed between the piston (28) and the lower connecting seat (20).

8. The flip-type synchronous pressing device for testing multiple navigation modules according to claim 7, characterized in that: An a-gas guide channel (26) is arranged inside the integral structure formed by the piston (28), the push rod (17) and the upper connecting seat (16) along the length direction, one end of the a-gas guide channel (26) is a one-way guide end (26a), one end of the a-gas guide channel (26) is connected to the cylinder bin (31) through a one-way valve (27) in the one-way guide end (26a), the one-way valve (27) only allows the gas in the a-gas guide channel (26) to enter the cylinder bin (31) through the one-way guide end (26a), the other end of the a-gas guide channel (26) is connected to one end of the gas guide hose (8), and the other end of the gas guide hose (8) is connected to the air pressure bin (25) in each pressure column (14) through a plurality of shunt pipes (23) on the pressure plate (2); The inner wall of the cylinder bin (31) is provided with a limiting inner edge (32); the cylinder barrel (18) is provided with a b air guide channel (33) along the length direction inside the wall body at the position of the limiting inner edge (32); the two ends of the b air guide channel (33) are respectively recorded as the air guide channel a end (33a) and the air guide channel b end (33b); the air guide channel a end (33a) and the air guide channel b end (33b) are both located on the inner wall surface of the cylinder bin (31) and distributed on both sides of the limiting inner edge (32); Two O-rings (30) are arranged in two sealing ring grooves on the outer peripheral surface of the piston (28), and the piston (28) is slidably sealed with the inner wall of the cylinder barrel (18) through the two O-rings (30); A c air-guiding channel (29) is provided in the piston (28) along the radial direction, and one end of the c air-guiding channel (29) close to the axis of the piston (28) is connected to one side of the a air-guiding channel (26), and one end of the c air-guiding channel (29) away from the axis of the piston (28) is connected to an annular gap (100) formed between two O-rings (30); When the piston (28) just contacts the limiting inner edge (32), the flip frame (6) is just in a horizontal state, and the annular gap (100) formed between the two O-rings (30) just connects to the air guide channel a end (33a) of the b air guide channel (33).

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