Surface resistance test fixture

Abstract

The invention relates to the technical field of resistance test jigs, in particular to a surface resistance test jig which comprises a driving motor fixedly installed on the surface of a detection body, an output shaft of the driving motor is coaxially connected with a rotating shaft, a driven shaft is in sliding fit with the inner wall of the rotating shaft, and a rotating disc is fixedly installed at the end, away from the rotating shaft, of the driven shaft. A driving gear is arranged on one side of the rotating disc, two sets of driven teeth are symmetrically arranged above the driving gear, ratchets are fixedly installed on the sides, close to the rotating disc, of the two sets of driven teeth, telescopic rods are symmetrically and fixedly installed on the surfaces of the two sets of ratchets, and the tail ends of the two sets of telescopic rods are movably connected with toothed plates; the surface of the toothed plate arranged on the left side is in meshed connection with a temperature control knob, and the surface of the toothed plate arranged on the right side is in meshed connection with a current knob. According to the invention, through cooperative use of all parts, the surface resistance of the high and low temperature objective table can be tested under the conditions of the same current and different temperature levels and the same temperature and different current levels, and the detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of resistance testing jigs, and in particular to a surface resistance testing jig. Background Art

[0002] COC chip is the abbreviation of "chip on carrier". It is a packaging technology that directly mounts the chip on a carrier. It needs to be tested before leaving the factory to test the chip's functions under different temperatures and currents. When testing it, a high and low temperature stage is needed, that is, the COC chip is placed on the high and low temperature stage for testing. However, when testing the COC chip, the surface resistance of the high and low temperature stage needs to be tested first, so that the surface resistance of the high and low temperature stage is within a certain range.

[0003] However, when testing the surface resistance of high and low temperature stages, traditional methods are still used, such as manually adjusting the current intensity and temperature, which not only increases the workload of workers but also reduces the detection efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a surface resistance testing fixture to solve the problem that in the prior art proposed in the above background technology, when testing the surface resistance of high and low temperature stages, the traditional manual adjustment of current intensity and temperature is used, which not only increases the burden on workers but also reduces the detection efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a surface resistance test fixture, comprising a detection body, the inner wall of which is provided with a guide groove, and further comprising: a placement plate is fixedly installed on the upper surface of the detection body, a limit plate with a limit hole on the surface is fixedly installed on the upper surface of the placement plate, a detection module is provided directly below the limit plate, and the detection module is installed inside the limit plate, and two groups of symmetrically arranged fixing modules are fixedly installed on the upper surface of the placement plate; It also includes an adjustment component for adjusting temperature and current, the adjustment component includes a driving motor fixedly mounted on the surface of the detection body, the output shaft of the driving motor is coaxially connected with a rotating shaft, the inner wall of the rotating shaft is slidably matched with a driven shaft, and the driven shaft is elastically connected to the inner wall of the rotating shaft through a connecting spring, a turntable is fixedly mounted on the end of the driven shaft away from the rotating shaft, a driving gear is provided on one side of the turntable, two groups of driven teeth are symmetrically arranged above the driving gear, ratchets are fixedly mounted on the sides of the two groups of driven teeth close to the turntable, telescopic rods are symmetrically fixedly mounted on the surfaces of the two groups of ratchets, and the ends of the two groups of telescopic rods are movably connected with tooth plates, the surface of the tooth plate arranged on the left side is meshingly connected with a temperature control knob, and the surface of the tooth plate arranged on the right side is meshingly connected with a current knob.

[0006] Furthermore, one end of the rotating shaft close to the detection body extends to the interior of the detection body, and the inner wall of the rotating shaft is symmetrically provided with two groups of limit grooves, and the inner wall of the limit groove is slidably matched with a slider, and an electromagnet is fixedly installed on the inner bottom surface of the rotating shaft, and a magnetic plate is provided on one side of the electromagnet.

[0007] Furthermore, the slider is fixedly mounted on the surface of the driven shaft, the magnetic plate is fixedly mounted on one end of the driven shaft close to the inner wall of the rotating shaft, and the magnetism generated by the magnetic plate repels the magnetism generated by the electromagnet when it is energized.

[0008] Furthermore, two groups of pawls are elastically connected to the surface of the rotating disk, and the pawls are staggeredly arranged on the surface of the rotating disk.

[0009] Furthermore, the driving gear is sleeved on the surface of the driven shaft, the driving gear is rotationally connected to the surface of the turntable via a friction damping bearing, and the surface of the driving gear is symmetrically provided with two groups of half teeth.

[0010] Furthermore, a telescopic head is fixedly mounted on one side of the driving gear close to the driving motor. The telescopic head is initially arranged at the lower end of the guide groove, and the driving gear is slidably matched with the inner wall of the guide groove.

[0011] Furthermore, the two groups of driven teeth are staggered, the two groups of ratchet teeth are staggered, and the two groups of ratchet teeth are opened in the same direction.

[0012] Furthermore, the two groups of tooth plates are slidably connected to the inner wall of the detection body through a limit block, the temperature control knob and the current knob are rotationally connected to the inner wall of the detection body, and the temperature control knob and the current knob are electrically connected to the detection module.

[0013] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention uses the drive motor, drive gear, current knob and other components that cooperate with each other, so that when the surface resistance of the high and low temperature stage is detected, the current generating module and the temperature module integrated in the detection module are energized, and then the drive motor is started to rotate clockwise, so that it rotates intermittently, and the turntable and the drive gear are driven to rotate clockwise through the rotating shaft and the driven shaft, so that the teeth on the left side of the drive gear begin to mesh with the driven teeth on the left side and drive the driven teeth to rotate synchronously and intermittently, thereby driving the telescopic rod on the left side to start rotating, so that the tooth plate on the left side starts to move downward, so that the tooth plate drives the temperature control knob to start rotating, and different temperature levels are adjusted. After different temperatures are detected under the same level of current, the ratchet on the left side will contact the ratchet on the right side, and then the drive motor is controlled The machine continues to rotate, so that the pawl on the left drives the driven tooth on the right to rotate, and then drives the temperature control knob to move up through the tooth plate on the right, so that the current knob rotates and the current level is adjusted. After the adjustment is completed, the drive motor is controlled to start rotating counterclockwise, so that the telescopic rod on the left drives the tooth plate to move down, so as to realize the surface resistance detection of different temperature levels of the high and low temperature stage under the same level of current. After the detection is completed, the electromagnet is energized to make the driven shaft extend from the rotating shaft, so that the teeth on the right start to mesh with the driven teeth on the right, and then the drive motor is controlled to rotate clockwise intermittently, and the action of surface resistance detection of different temperature levels of the high and low temperature stage under the same level of current is repeated, so as to realize the detection of different current levels under the same temperature level, thereby reducing the labor intensity of workers and speeding up the detection time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the guide groove of the present invention; Figure 3 It is a schematic diagram of the structural separation of the limit plate and the detection module of the present invention; Figure 4 It is a schematic diagram of the overall structure of the adjustment component of the present invention; Figure 5 for Figure 4 Schematic diagram of the plane structure; Figure 6 It is a schematic diagram of the separation of the rotating shaft and the driven shaft structure of the present invention; Figure 7 It is a schematic diagram of the planar structure of the distribution of the ratchets on the surface of the rotating disk of the present invention; Figure 8 It is a schematic diagram of the overall structure of the driving gear of the present invention.

[0016] In the figure: 1. detection body; 101. guide groove; 2. placement plate; 201. limit plate; 202. detection module; 3. fixing module; 4. adjustment component; 401. drive motor; 402. rotating shaft; 4021. limit groove; 4022. slider; 4023. electromagnet; 4024. magnetic plate; 403. driven shaft; 404. turntable; 4041. ratchet; 405. drive gear; 4051. telescopic head; 406. driven tooth; 407. ratchet; 408. telescopic rod; 409. tooth plate; 410. temperature control knob; 411. current knob. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] The present invention will be further described below in conjunction with the embodiments.

[0019] Embodiment: A surface resistance test fixture, such as Figure 1-Figure 8 As shown, it includes a detection body 1, and a guide groove 101 is provided on the inner wall of the detection body 1. By setting the guide groove 101, it can play a guiding and limiting role. It is worth mentioning that the guide groove 101 is an arc-shaped structure; it also includes: a placement plate 2 is fixedly installed on the upper surface of the detection body 1, and the placement plate 2 is provided to fix the components installed on its surface; a limiting plate 201 with a limiting hole on the surface is fixedly installed on the upper surface of the placement plate 2, and the limiting hole is opened through the surface of the placement plate 2, and by setting the limiting plate 201, the high and low temperature stage to be detected can be limited by the limiting hole opened on the surface; a detection module 202 is provided directly below the limiting plate 201, and the detection module 202 is installed inside the limiting plate 201, and the detection module 202 is integrated with a current generating module and a temperature module; two groups of symmetrically arranged fixing modules 3 are fixedly installed on the upper surface of the placement plate 2, and the fixing module 3 is provided to fix the high and low temperature stage.

[0020] Combined with Figure 1 -Attached Figure 8, and also includes an adjustment component 4 for adjusting temperature and current. By setting the adjustment component 4, the surface resistance of the high and low temperature stage can be detected at the same temperature level and different current levels, as well as the same current level and different temperature levels, thereby accelerating the detection efficiency. It is worth noting that since any one of the temperature and current increases first will have different effects on the surface resistance of the high and low temperature stage, it is necessary to set the adjustment component 4 for detection; the adjustment component 4 includes a driving motor 401 fixedly mounted on the surface of the detection body 1, and the driving motor 401 can provide a power source for the detection of the surface resistance of the high and low temperature stage; Among them, the output shaft of the driving motor 401 is coaxially connected with the rotating shaft 402, and the end of the rotating shaft 402 close to the detection body 1 extends to the inside of the detection body 1. By setting the rotating shaft 402, it can rotate synchronously with the driving motor 401 to achieve the driving function; the inner wall of the rotating shaft 402 is slidably matched with the driven shaft 403, and the driven shaft 403 is elastically connected to the inner wall of the rotating shaft 402 through a connecting spring. By setting the driven shaft 403, it can slide inside the rotating shaft 402 and rotate synchronously with the rotating shaft 402; two groups of limiting grooves 4021 are symmetrically opened on the inner wall of the limiting groove 4021, and the inner wall of the limiting groove 4021 is slidably matched with a slider 4022, and the slider 4022 is fixedly installed on the surface of the driven shaft 403. By setting the limiting groove 4021 and the slider 4022, the driven shaft 403 can be guided and limited through the cooperation between the two.

[0021] Among them, an electromagnet 4023 is fixedly installed on the inner bottom surface of the rotating shaft 402, and the electromagnet 4023 is connected to an external power supply so that it can generate magnetism when it is energized; a magnetic plate 4024 is provided on one side of the electromagnet 4023, and the magnetic plate 4024 is fixedly installed on one end of the driven shaft 403 close to the inner wall of the rotating shaft 402, and the magnetism generated by the magnetic plate 4024 repels the magnetism generated by the electromagnet 4023 when it is energized. By setting the magnetic plate 4024, when the electromagnet 4023 is energized, the magnetism generated repels the magnetic plate 4024, so that the driven shaft 403 can slide inside the rotating shaft 402 and stretch the connecting spring, so that the connecting spring is deformed and generates a reaction force, so that the magnetic plate 4024 can drive the electromagnet 4023 to reset after the power is cut off; a turntable 404 is fixedly installed on the end of the driven shaft 403 away from the rotating shaft 402, and by setting the turntable 404, it can rotate synchronously with the driven shaft 403; Among them, two groups of pawls 4041 are elastically connected to the surface of the turntable 404, and the pawls 4041 are staggered on the surface of the turntable 404. By setting the pawls 4041, a driving effect can be achieved; a driving gear 405 is provided on one side of the turntable 404, and the driving gear 405 is sleeved on the surface of the driven shaft 403. The driving gear 405 is rotatably connected to the surface of the turntable 404 through a friction damping bearing. By setting the driving gear 405, it can rotate synchronously with the turntable 404; it is worth noting that the friction damping bearing is a prior art, so that the driving gear 405 can rotate synchronously with the turntable 404, and when the driving gear 405 is hindered and cannot rotate, the turntable 404 can rotate alone.

[0022] The surface of the driving gear 405 is symmetrically provided with two groups of half teeth, which can play a driving role during the rotation process; a telescopic head 4051 is fixedly installed on the side of the driving gear 405 close to the driving motor 401. The telescopic head 4051 is initially arranged at the lower end of the guide groove 101, and the driving gear 405 is slidably matched with the inner wall of the guide groove 101. By setting the telescopic head 4051, it can follow the driving gear 405 to slide inside the guide groove 101 and can form an obstacle to the driving gear 405, so that the turntable 404 can independently rotate. Self-rotation; two groups of driven teeth 406 are symmetrically arranged above the driving gear 405, and the two groups of driven teeth 406 are staggered. By setting two groups of driven teeth 406, they can mesh with two groups of symmetrically arranged teeth to achieve the purpose of rotation; it is worth noting that since the two groups of driven teeth 406 are staggered, when the driving gear 405 rotates, it can only mesh with one group of driven teeth 406, and the driven teeth 406 are rotationally connected to the inner wall of the detection body 1 through the existing automatic reset part; the automatic reset part can automatically reset after rotating a certain angle.

[0023] Among them, the two sets of driven teeth 406 are fixedly installed with ratchet teeth 407 on one side close to the rotating disk 404. The two sets of ratchet teeth 407 are staggered and have the same opening direction. By setting the ratchet teeth 407, they can mesh with the pawl 4041. It is worth noting that, in combination with the attached Figure 5 and attached Figure 7 In the initial state, the pawl 4041 on the left is in the same plane with the ratchet 407 on the right, and the pawl 4041 on the right is staggered with the ratchet 407 on the left; telescopic rods 408 are symmetrically fixedly installed on the surfaces of the two groups of ratchet teeth 407, and by setting the telescopic rods 408, they can rotate synchronously with the ratchet teeth 407.

[0024] Among them, the ends of the two groups of telescopic rods 408 are movably connected with tooth plates 409, and the two groups of tooth plates 409 are slidably connected to the inner wall of the detection body 1 through limit blocks. By setting the tooth plates 409, they can rotate synchronously with the ratchet 407; the surface of the tooth plate 409 set on the left is meshingly connected with a temperature control knob 410, and the surface of the tooth plate 409 set on the right is meshingly connected with a current knob 411. The temperature control knob 410 and the current knob 411 are rotatably connected to the inner wall of the detection body 1, and the temperature control knob 410 and the current knob 411 are both electrically connected to the detection module 202. By setting the temperature control knob 410 and the current knob 411, the current generation level of the current generating module inside the detection module 202 and the temperature level of the temperature module can be controlled, so as to detect the surface resistance of the high and low temperature stage.

[0025] Specifically, when the surface resistance of the high and low temperature stage is detected, the high and low temperature stage to be detected is placed from the limiting hole to the surface of the detection module 202, and fixed by the fixing module 3, and then the current generating module and the temperature module are energized, and then the driving motor 401 is started to rotate clockwise, and the driving motor 401 is controlled to rotate intermittently, and the rotating driving motor 401 drives the turntable 404 and the driving gear 405 to start synchronously rotating clockwise through the rotating shaft 402 and the driven shaft 403, so that the teeth on the left side of the driving gear 405 begin to mesh with the driven teeth 406 on the left and drive the driven teeth 406 to rotate intermittently, and the rotation of the driven teeth 406 on the left will drive the telescopic rod 408 on the left to start rotating, so that the tooth plate 409 on the left starts to move downward and drives the temperature control knob 410 to start rotating, and the rotating temperature control knob 410 will start to adjust different temperature levels of the temperature module, so that the high and low temperature stage can detect different temperatures under the same level of current; When the initial level of current detection is completed, the left pawl 4041 will contact with the right ratchet 407 to form a meshing state, and the telescopic head 4051 has moved from the lower end position of the guide groove 101 to the upper end of the guide groove 101, so that the driving gear 405 is blocked, and then the driving motor 401 is controlled to continue to rotate clockwise, so that the turntable 404 rotates alone, and at the same time, the left pawl 4041 will also start to drive the right driven tooth 406 to rotate, so that the right tooth plate 409 starts to drive the temperature control knob 410 to move up, and drives the current knob 411 to rotate, and starts to adjust the current level of the current generating module. After the current level adjustment is completed, the driving motor 401 is controlled to start intermittent counterclockwise rotation, so that the telescopic rod 408 on the left drives the tooth plate 409 to move down, and the resistance of the surface of the high and low temperature stage is detected under the condition of different temperatures of another level of current, so as to realize the surface resistance detection of the high and low temperature stage at different temperature levels under the same level of current; After the detection is completed, the drive motor 401 will reset and drive the left driven tooth 406 to reset, and at the same time start to energize the electromagnet 4023, so that the driven shaft 403 extends from the rotating shaft 402 and stretches the reset spring, so that the teeth on the right side of the drive gear 405 begin to engage with the right driven tooth 406, and then control the drive motor 401 to rotate intermittently clockwise, so that the right driven tooth 406 and the pawl 4041 repeat the action of surface resistance detection of the high and low temperature stage at the same level of current and at different temperature levels, thereby realizing the detection of different current levels at the same temperature level, thereby reducing the labor intensity of workers and speeding up the detection time.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A surface resistance test fixture, comprising a detection body (1), wherein the inner wall of the detection body (1) is provided with a guide groove (101), characterized in that: Also includes: A placement plate (2) is fixedly mounted on the upper surface of the detection body (1); a limit plate (201) having a limit hole on its surface is fixedly mounted on the upper surface of the placement plate (2); a detection module (202) is provided directly below the limit plate (201), and the detection module (202) is mounted inside the limit plate (201); and two groups of symmetrically arranged fixing modules (3) are fixedly mounted on the upper surface of the placement plate (2); The detection device also includes an adjustment component (4) for adjusting temperature and current, wherein the adjustment component (4) includes a drive motor (401) fixedly mounted on the surface of the detection body (1), the output shaft of the drive motor (401) being coaxially connected to a rotating shaft (402), a driven shaft (403) being slidably matched with the inner wall of the rotating shaft (402), and the driven shaft (403) being elastically connected to the inner wall of the rotating shaft (402) via a connecting spring, a rotating disk (404) being fixedly mounted on one end of the driven shaft (403) away from the rotating shaft (402), and a driving gear (404) being provided on one side of the rotating disk (404). 05), two groups of driven teeth (406) are symmetrically arranged above the driving gear (405), ratchets (407) are fixedly installed on one side of the two groups of driven teeth (406) close to the rotating disk (404), telescopic rods (408) are symmetrically fixedly installed on the surfaces of the two groups of ratchets (407), and the ends of the two groups of telescopic rods (408) are movably connected to tooth plates (409), the surface of the tooth plate (409) arranged on the left side is meshingly connected to a temperature control knob (410), and the surface of the tooth plate (409) arranged on the right side is meshingly connected to a current knob (411).

2. A surface resistance test fixture according to claim 1, characterized in that: One end of the rotating shaft (402) close to the detection body (1) extends to the interior of the detection body (1); the inner wall of the rotating shaft (402) is symmetrically provided with two groups of limit grooves (4021); the inner wall of the limit groove (4021) is slidably fitted with a slider (4022); an electromagnet (4023) is fixedly mounted on the inner bottom surface of the rotating shaft (402); a magnetic plate (4024) is provided on one side of the electromagnet (4023).

3. A surface resistance test fixture according to claim 2, characterized in that: The slider (4022) is fixedly mounted on the surface of the driven shaft (403), the magnetic plate (4024) is fixedly mounted on one end of the driven shaft (403) close to the inner wall of the rotating shaft (402), and the magnetism generated by the magnetic plate (4024) repels the magnetism generated by the electromagnet (4023) when power is supplied.

4. The surface resistance test fixture according to claim 1, characterized in that: Two groups of ratchets (4041) are elastically connected to the surface of the rotating disk (404), and the ratchets (4041) are staggeredly arranged on the surface of the rotating disk (404).

5. A surface resistance test fixture according to claim 4, characterized in that: The driving gear (405) is sleeved on the surface of the driven shaft (403), the driving gear (405) is rotationally connected to the surface of the rotating disk (404) via a friction damping bearing, and the surface of the driving gear (405) is symmetrically provided with two groups of half teeth.

6. A surface resistance test fixture according to claim 5, characterized in that: A telescopic head (4051) is fixedly mounted on one side of the driving gear (405) close to the driving motor (401); the telescopic head (4051) is arranged at the lower end of the guide groove (101) in an initial state, and the driving gear (405) is slidably matched with the inner wall of the guide groove (101).

7. The surface resistance test fixture according to claim 1, characterized in that: The two groups of driven teeth (406) are staggered, the two groups of ratchet teeth (407) are staggered, and the two groups of ratchet teeth (407) are opened in the same direction.

8. The surface resistance test fixture according to claim 1, characterized in that: The two groups of tooth plates (409) are slidably connected to the inner wall of the detection body (1) via a limit block, the temperature control knob (410) and the current knob (411) are rotationally connected to the inner wall of the detection body (1), and the temperature control knob (410) and the current knob (411) are both electrically connected to the detection module (202).

Images