WO2021174584A1 - 电阻测试工装 - Google Patents
电阻测试工装 Download PDFInfo
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- WO2021174584A1 WO2021174584A1 PCT/CN2020/079533 CN2020079533W WO2021174584A1 WO 2021174584 A1 WO2021174584 A1 WO 2021174584A1 CN 2020079533 W CN2020079533 W CN 2020079533W WO 2021174584 A1 WO2021174584 A1 WO 2021174584A1
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- vertical
- radial
- resistance test
- test tool
- plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
Definitions
- the utility model relates to electronic testing equipment, in particular to a resistance testing tool.
- some parts are designed to be ring-shaped and formed as radiating parts, such as the ring-shaped metal frame of a smart watch.
- these ring-shaped components are provided with a plurality of electrical contacts at intervals in the circumferential direction for connection with an external circuit.
- the conventional resistance test tool can only move the test probe in one direction at a time to make it contact the electrical contact to be tested for resistance test.
- This conventional resistance testing tool cannot make the test probes contact multiple electrical contacts distributed in the circumferential direction of the above-mentioned ring-shaped component at the same time, so as to detect the resistance value between the electrical contacts.
- the current method for detecting the resistance value between the electrical contacts of the above-mentioned ring-shaped components is to manually contact the probes of the resistance tester to the electrical contacts to perform the detection, and this detection method is inefficient. Therefore, there is an urgent need for a test tool capable of detecting the resistance value of the ring-shaped metal component to improve the detection efficiency.
- the purpose of the present invention is to provide a resistance test tool, which can test the resistance value between two points of the ring-shaped metal part.
- a resistance test tool for testing the resistance of a ring-shaped metal part the inner wall of the ring-shaped metal part is provided with at least two electrical contacts spaced in the circumferential direction
- the resistance test tool includes a base and a vertical sliding block And a number of radial sliders, the number of the radial sliders is the same as the number of the electrical contacts, the ring-shaped metal parts are horizontally fixed to the base, and the vertical sliders are suspended on the Right above the ring-shaped metal part, each of the radial sliders is provided with a branch circuit board and a contact pin extending in the radial direction of the ring-shaped metal part, and the contact pin is electrically connected to the branch circuit board ,
- the vertical slider can slide in the vertical direction and abut each of the radial sliders to drive each of the radial sliders to slide in the horizontal direction, so that each of the radial sliders
- the contact pin provided in the block contacts one of the electrical contacts.
- the resistance test tool further includes a vertical sliding plate and an air cylinder, the cylinder is fixedly connected to the base, and the cylinder is used to drive the vertical sliding plate to move vertically up and down, and the vertical sliding plate
- the block extends downwards from the bottom of the vertical sliding plate, the vertical sliding block is tapered, the side wall of the vertical sliding block is provided with a contact plane, and the contact plane is gradually retracted from top to bottom, so The contact plane is used to abut the radial slider.
- the base is provided with an escape groove, and a guide rail is fixed below the escape groove, the guide rail is arranged along the radial direction of the ring-shaped metal part, and the radial slider is arranged on the In the avoidance groove, the radial sliding block is slidably connected with the guide rail.
- the radial slider includes a transverse portion and a vertical portion, the transverse portion is vertically connected to the vertical portion, so that the radial slider is in an "L" shape, and the transverse portion is located in the In the avoidance groove, the bottom of the horizontal portion is slidably connected with the guide rail, and the vertical portion is installed with the circuit board and contact pins.
- the top edge of the vertical portion is provided with a contact rounding, and the contact rounding is used to contact the contact plane.
- the base includes an upper base plate, a lower base plate, a vertical guide post and a vertical moving plate
- the upper base plate and the lower base plate are opposed to each other in parallel and are fixed to each other by the vertical guide post, the vertical moving plate and
- the vertical guide column is slidably connected
- the cylinder is fixed to the upper base plate
- the piston rod of the cylinder is fixed to the vertical moving plate
- the vertical moving plate can drive the vertical sliding plate Move vertically up and down.
- the resistance test tool further includes a buffer slide between the vertical moving plate and the vertical sliding plate, a buffer spring between the vertical moving plate and the buffer slide, and a
- a buffer slide between the vertical moving plate and the vertical sliding plate
- a buffer spring between the vertical moving plate and the buffer slide
- a limit block is provided to restrict the guide rod from falling off the vertical moving plate.
- the buffer spring is sleeved on the periphery of the guide rod.
- the base further includes a lower mounting plate and an upper mounting plate, the lower mounting plate is fixedly connected to the top of the lower base plate, the upper mounting plate is fixedly arranged above the lower mounting plate, and A main circuit board is provided between the lower mounting board and the upper mounting board, the main circuit board is electrically connected to the branch circuit board, the guide rail is fixedly arranged on the top of the lower mounting board, and the upper The mounting plate is provided with the avoidance groove.
- a plurality of positioning rods are provided at the bottom of the vertical sliding plate, the positioning rods extend downward, and the top of the ring-shaped metal part is provided with positioning holes, and the positioning rods are used to insert the positioning holes.
- a return spring is provided between the transverse portion and the groove wall of the avoidance groove.
- the vertical thrust from the cylinder can be converted into at least two different directions in the horizontal direction, so that multiple electrical components on the inner wall of the ring-shaped metal part can be tested at one time. Contacts to improve test efficiency.
- Figure 1 is a three-dimensional view of the resistance testing tool provided by the utility model when testing ring-shaped metal parts
- Figure 2 is a partial view of the resistance testing tool provided by the utility model when testing ring-shaped metal parts
- Figure 3 is a partial exploded view of the resistance test tool provided by the utility model
- Figure 4 is a partial view of the resistance testing tool provided by the utility model when testing ring-shaped metal parts
- Figure 5 is a three-dimensional view of the vertical skateboard in the utility model
- Figure 6 is a partial view of the resistance testing tool provided by the utility model when testing ring-shaped metal parts
- Fig. 7 is a partial enlarged view of A in Fig. 1;
- Figure 8 is a partial cut-away view of the resistance test tool provided by the utility model.
- Ring metal parts 11. Electrical contacts; 12. Positioning holes; 21. Vertical slide; 22. Vertical slide; 23. Contact plane; 24. Buffer slide; 25. Vertical movement Plate; 26, guide rod; 261, limit block; 27, buffer spring; 28, positioning rod; 31, radial slider; 311, horizontal part; 312, vertical part; 313, contact rounding; 314, connection Section; 315.
- the present invention provides a resistance testing tool for testing the resistance of the ring-shaped metal part 1.
- the ring-shaped metal part 1 is a metal frame of a smart watch, and the diameter of the inner ring wall of the ring-shaped metal part 1 is about 35 mm.
- the inner wall of the ring-shaped metal part 1 is provided with at least two electrical contacts 11 spaced in the circumferential direction. In this embodiment, the number of the electrical contacts 11 is two, which are the antenna signal point and the antenna ground point. .
- the resistance test tool includes a base, which includes an upper base plate 41, a lower base plate 42 and a vertical moving plate 25.
- the upper base plate 41 and the lower base plate 42 are fixed to each other through a vertical guide column 43.
- the vertical moving plate 25 is slidably connected with the vertical guide column 43.
- the cylinder 4 is fixed to the upper base plate 41, and the piston rod 44 of the cylinder 4 is fixed to the vertical moving plate 25.
- the resistance test tool further includes a buffer slider 24.
- a plurality of guide rods 26 are fixedly connected to the top wall of the buffer slider 24, and the guide rods 26 extend vertically upward.
- the guide rod 26 slidably penetrates the vertical moving plate 25, the top end of the guide rod 26 passes through the vertical moving plate 25, and is provided with a limiting block 261, and the limiting block 261 cannot pass through the vertical moving plate 25.
- the lower section of the guide rod 26 is sleeved with a buffer spring 27. The two ends of the buffer spring 27 abut against the buffer slider 24 and the vertical moving plate 25 respectively.
- the limit block 261 restricts the guide rod 26 from moving from the vertical moving plate 25. Fall off.
- the air cylinder 4 can drive the vertical moving plate 25 to move vertically up and down, and the vertical moving plate 25 can drive the buffer slider 24 to move vertically up and down through the guide rod 26 and the buffer spring 27.
- the base also includes a lower mounting plate 6 and an upper mounting plate 7.
- the lower mounting plate 6 is fixed to the top of the lower base plate 42, and the upper mounting plate 7 is fixedly arranged above the lower mounting plate 6.
- a main circuit board 8 is provided between the mounting board 6 and the upper mounting board 7.
- At least three positioning blocks 5 are provided on the upper mounting plate 7. In this embodiment, the number of positioning blocks 5 is four, and the positioning blocks 5 are evenly distributed in a circular array, and the positioning blocks 5 are used for co-locating ring-shaped metal parts 1.
- the ring-shaped metal part 1 is horizontally fixed to the upper mounting plate 7, that is, the opening of the ring-shaped metal part 1 faces the vertical direction.
- the upper mounting plate 7 is also provided with two avoiding grooves 71, the top of the lower mounting plate 6 is fixedly connected with a guide rail 61, the guide rail 61 is located below the avoiding groove 71, and the guide rail 61 is arranged along the radial direction of the ring-shaped metal part 1.
- a vertical sliding plate 21 is fixedly connected to the bottom of the buffer slider 24.
- the bottom of the vertical sliding plate 21 is provided with a vertical sliding block 22, and the vertical sliding block 22 extends downward from the bottom of the vertical sliding plate 21.
- the vertical sliding block 22 is tapered, and the side wall of the vertical sliding block 22 is provided with two contact planes 23, and the contact planes 23 are gradually retracted from top to bottom.
- a number of positioning rods 28 are provided at the bottom of the vertical sliding plate 21, and the positioning rods 28 extend downward.
- the top of the ring-shaped metal part 1 is provided with positioning holes 12 (combined with Figure 6). During testing, the positioning rods 28 are used to insert the positioning holes 12 To further fix the ring-shaped metal part 1.
- the resistance test tool also includes a radial slider 31, the radial slider 31 includes a transverse portion 311 and a vertical portion 312, the transverse portion 311 is perpendicularly connected to the vertical portion 312, so that the radial slider 31 It has an "L" shape.
- the lateral portion 311 is located in the avoidance groove 71 (refer to FIG. 2), and the bottom of the lateral portion 311 is slidably connected to the guide rail 61, so that the radial slider 31 can slide in the horizontal direction.
- the vertical portion 312 penetrates the ring-shaped metal part 1.
- the top edge of the vertical portion 312 is provided with a contact round 313, which is used to abut against the contact plane 23 (each contact round 313 matches a contact plane 23) to improve The smoothness of the contact between the two.
- each radial slider 31 is provided with a branch circuit board 315 and a contact pin 316 extending in the radial direction of the ring-shaped metal part 1.
- the contact pin 316 is electrically connected to the branch circuit board 315, and the circuit breaker
- the board 315 and the main circuit board 8 are electrically connected by wires 81.
- the contact pin 316 is used to abut the electrical contact 11.
- the resistance test tool further includes a return spring 317 located between the lateral portion 311 of the radial slider 31 and the groove wall 711 of the avoidance groove 71.
- the outer end of the transverse portion 311 is provided with a connecting portion 314, and a return spring 317 is provided between the end of the connecting portion 314 and the groove wall 711 of the escape groove 71, and both ends of the return spring 317 They are respectively connected to the end of the connecting portion 314 and the groove wall 711 of the avoiding groove 71.
- the return spring 317 can also be sleeved on the periphery of the connecting portion 314 so that the two ends of the return spring 317 abut on the lateral portion 311 and the groove wall 711 of the relief groove 71 respectively.
- the working principle of the resistance test tool is:
- the air cylinder 4 drives the vertical moving plate 25 to move down along the vertical guide column 43, thereby driving the buffer slide 24 and the vertical slide 21 to move down together through the buffer spring 27 until the contact plane 23 of the vertical slide 22 and the radial slide The contact round 313 of the block 31 abuts.
- the contact plane 23 of the vertical slider 22 pushes the radial slider 31 to slide outward along the radial direction of the ring-shaped metal part 1, so that the two radial sliders 31 are set
- the contact pins 316 respectively contact the two circumferentially spaced electrical contacts 11 provided on the inner wall of the ring-shaped metal part 1, so as to conduct the circuit between the two electrical contacts 11, so that the two electrical contacts can be tested
- the two ends of the buffer spring 27 abut against the buffer slider 24 and the vertical moving plate 25 respectively to buffer the impact force from the cylinder 4.
- the positioning rod 28 is inserted into the positioning hole 12 to position the ring-shaped metal part 1.
- the cylinder 4 drives the vertical moving plate 25 to move up and reset, and the vertical moving plate 25 drives the vertical slider 22 to move up and reset through the stop block 261.
- the radial slider 31 is able to adjust the elasticity of the return spring 317. The restoring force moves inward to reset, so that the contact pin 316 and the electrical contact 11 are separated from each other.
- the vertical thrust from the cylinder 4 can be converted into at least two forces in the horizontal direction, so that the ring metal can be tested at one time.
- the multiple electrical contacts 11 on the inner wall of the part 1 improve the test efficiency.
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Abstract
一种电阻测试工装，包括基座、一个竖向滑块（22）以及若干径向滑块（31），径向滑块（31）的数量与电触点（11）的数量相同，环状金属零件（1）水平固定于基座，竖向滑块（22）悬设于环状金属零件（22）的正上方，每个径向滑块（31）均设有分电路板（315）和沿环状金属零件（1）的径向延伸的接触针（316），接触针（316）与分电路板（315）电连接，竖向滑块（22）可沿竖直方向滑动并与每个径向滑块（31）抵接，以带动每个径向滑块（31）沿水平方向滑动，从而使每个径向滑块（31）所设的接触针（316）接触一个电触点（11），从而使径向滑块（31）所设的接触针（316）接触电触点（11），从而将电触点（11）之间的回路导通，从而能够测试两个电触点（11）之间的回路电阻值。
Description
本实用新型涉及电子检测设备，尤其涉及一种电阻测试工装。
在生产制造过程中，有些零部件设计为环状并形成为辐射部件，如智能手表的环形金属框。通常，这些环状零部件的周向间隔设置有多个电触点，用于与外部电路连接。
但是，这样的设计带来了测试上的问题。常规的电阻测试工装一次性只能在一个方向上移动测试探针，使其接触待测电触点，进行电阻测试。这种常规的电阻测试工装无法使其测试探针同时接触分布于上述环状零部件周向的多个电触点，以检测电触点间的电阻值。而，目前检测上述环状零部件电触点间电阻值的方法是通过人工将电阻测试仪器的探针分别接触电触点，从而进行检测，这种检测方法效率低。因而，亟需一种能够检测环状金属零部件电阻值的测试工装，以提高检测效率。
为了克服现有技术的不足，本实用新型的目的在于提供一种电阻测试工装，其能够测试环状金属零件内测其中两点之间的电阻值。
本实用新型的目的采用如下技术方案实现：
电阻测试工装，用于测试环状金属零件的电阻，所述环状金属零件的内壁设有至少两个沿周向间隔的电触点，所述电阻测试工装包括基座、一个竖向滑块以及若干径向滑块，所述径向滑块的数量与所述电触点的数量相同，所述环状金属零件水平固定于所述基座，所述竖向滑块悬设于所述环状金属零件的正上方，每个所述径向滑块均设有分电路板和沿所述环状金属零件的径向延伸的接触针，所述接触针与所述分电路板电连接，所述竖向滑块可沿竖直方向滑动并与每个所述径向滑块抵接，以带动每个所述径向滑块沿水平方向滑动，从而使每个所述径向滑块所设的接触针接触一个所述电触点。
优选的，所述电阻测试工装还包括竖向滑板和气缸，所述气缸固接于所述基座，所述气缸用于带动所述竖向滑板沿竖向上、下移动，所述竖向滑块自所述竖向滑板的底部向下延伸，所述竖向滑块呈锥状，所述竖向滑块的侧壁设有接触平面，所述接触平面自上而下逐渐内收，所述接触平面用于与所述径向滑块抵接。
优选的，所述基座设有避空槽，所述避空槽的下方固定设有导轨，所述导轨沿所述环状金属零件的径向设置，所述径向滑块设于所述避空槽内，所述径向滑块与所述导轨可滑动地连接。
优选的，所述径向滑块包括横向部和竖向部，所述横向部垂直连接于所述竖向部，使所述径向滑块呈“L”形，所述横向部位于所述避空槽内，所述横向部的底部与所述导轨可滑动连接，所述竖向部安装有所述分电路板和接触针。
优选的，所述竖向部的顶部边缘设有接触倒圆，所述接触倒圆用于与所述接触平面接触。
优选的，所述基座包括上基板、下基板、竖向导柱和竖向移动板，所述上基板与所述下基板平行相对并通过竖向导柱彼此固接，所述竖向移动板与所述竖向导柱可滑动地连接，所述气缸固接于所述上基板，所述气缸的活塞杆与所述竖向移动板固接，所述竖向移动板可带动所述竖向滑板沿竖向上、下移动。
优选的，所述电阻测试工装还包括位于所述竖向移动板和所述竖向滑板之间的缓冲滑块、位于所述竖向移动板和所述缓冲滑块之间的缓冲弹簧以及用于引导所述缓冲滑块沿竖向移动的导向杆，所述导向杆的底端与所述缓冲滑块固接，所述缓冲滑块与所述竖向滑板固接，所述导向杆可滑动地穿设于所述竖向移动板，所述导向杆的顶端穿出于所述竖向移动板，并设有限位块以限制所述导向杆从所述竖向移动板脱落，所述缓冲弹簧套设于所述导向杆外围。
优选的，所述基座还包括下安装板和上安装板，所述下安装板固接于所述下基板的顶部，所述上安装板固定地设于所述下安装板的上方，所述下安装板与所述上安装板之间设有主电路板，所述主电路板与所述分电路板电连接，所述导轨固定地设于所述下安装板的顶部，所述上安装板开设有所述避空槽。
优选的，所述竖向滑板的底部设有若干定位杆，所述定位杆朝下延伸，所述环状金属零件的顶部设有定位孔，所述定位杆用于插入所述定位孔。
优选的，所述横向部与所述避空槽的槽壁之间设有复位弹簧。
相比现有技术，本实用新型的有益效果在于：
通过竖向滑块和径向滑块的配合，能够使来自气缸的竖向推力转化为水平方向上的至少两个不同方向的力，从而能一次性测试环状金属零件内壁上的多个电触点，提高测试效率。
图1为本实用新型提供的电阻测试工装测试环状金属零件时的立体视图；
图2为本实用新型提供的电阻测试工装测试环状金属零件时的局部视图；
图3为本实用新型提供的电阻测试工装的局部分解视图；
图4为本实用新型提供的电阻测试工装测试环状金属零件时的局部视图；
图5为本实用新型其中的竖向滑板的立体视图；
图6为本实用新型提供的电阻测试工装测试环状金属零件时的局部视图；
图7为图1中A处的局部放大视图；
图8为本实用新型提供的电阻测试工装的局部剖切视图。
图中：1、环状金属零件；11、电触点；12、定位孔；21、竖向滑板；22、竖向滑块；23、接触平面；24、缓冲滑块；25、竖向移动板；26、导向杆；261、限位块；27、缓冲弹簧；28、定位杆；31、径向滑块；311、横向部；312、竖向部；313、接触倒圆；314、连接部；315、分电路板；316、接触针；317、复位弹簧；4、气缸；41、上基板；42、下基板；43、竖向导柱；44、活塞杆；5、定位块；6、下安装板；61、导轨；7、上安装板；71、避空槽；711、槽壁；8、主电路板；81、导线。
下面，结合附图以及具体实施方式，对本实用新型做进一步描述，需要说明的是，在不相冲突的前提下，以下描述的各实施例之间或各技术特征之间可以任意组合形成新的实施例。
请参阅图1和图2，本实用新型提供一种电阻测试工装，用于测试环状金属零件1的电阻。结合图6，在本实施中，环状金属零件1为智能手表的金属框，环状金属零件1的内环壁直径约为35mm。环状金属零件1的内壁设有至少两个沿周向间隔的电触点11，在本实施例中，所述电触点11的个数为两个，分别为天线信号点和天线接地点。
见图1，电阻测试工装包括基座，基座包括上基板41、下基板42和竖向移动板25，上基板41与下基板42通过竖向导柱43彼此固接。竖向移动板25与竖向导柱43可滑动地连接。气缸4固接于上基板41，气缸4的活塞杆44与竖向移动板25固接。结合图1、图7，电阻测试工装还包括缓冲滑块24，缓冲滑块24的顶壁固接有若干导向杆26，导向杆26沿竖向朝上延伸。导向杆26可滑动地穿设于竖向移动板25，导向杆26的顶端穿出于竖向移动板25，并设有限位块261，限位块261不能穿过竖向移动板25。导向杆26的下段套设有缓冲弹簧27，缓冲弹簧27的两端分别抵着缓冲滑块24和竖向移动板25，限位块261限制所述导向杆26从所述竖向移动板25脱落。
通过上述结构，气缸4可带动竖向移动板25沿竖向上、下移动，进而竖向移动板25可通过导向杆26和缓冲弹簧27带动缓冲滑块24沿竖向上、下移动。
见图1至图3，基座还包括下安装板6和上安装板7，下安装板6固接于下基板42的顶部，上安装板7固定地设于下安装板6的上方，下安装板6与上安装板7之间设有主电路板8。上安装板7上设有至少三个定位块5，在本实施中，定位块5的数量为四个，定位块5呈圆周阵列均匀分布，定位块5用于共同定位环状金属零件1。测试时，环状金属零件1水平固定于上安装板7，即环状金属零件1的开口朝竖向。上安装板7还开设有两条避空槽71，下安装板6的顶部固接有导轨61，导轨61位于避空槽71的下方，导轨61沿环状金属零件1的径向设置。
见图1-2和图5，缓冲滑块24的底部固定连接有竖向滑板21。竖向滑板21的底部设有竖向滑块22，竖向滑块22自竖向滑板21的底部向下延伸。竖向滑块22呈锥状，竖向滑块22的侧壁设有两个接触平面23，接触平面23自上而下逐渐内收。
竖向滑板21的底部设有若干定位杆28，定位杆28朝下延伸，环状金属零件1的顶部设有定位孔12（结合图6），测试时，定位杆28用于插入定位孔12以进一步固定环状金属零件1。
见图3、图4，电阻测试工装还包括径向滑块31，径向滑块31包括横向部311和竖向部312，横向部311垂直连接于竖向部312，使径向滑块31呈“L”形。横向部311位于避空槽71内（参考图2），横向部311的底部与导轨61可滑动连接，使径向滑块31可沿水平方向滑动。测试时，竖向部312穿过环状金属零件1。结合图4、图6，竖向部312的顶部边缘设有接触倒圆313，接触倒圆313用于与接触平面23抵接（每个接触倒圆313匹配于一个接触平面23），以提高两者接触的顺滑程度。
见图6和图8，每个径向滑块31均设有分电路板315和沿环状金属零件1的径向延伸的接触针316，接触针316与分电路板315电连接，分电路板315与主电路板8通过导线81电连接。接触针316用于抵接电触点11。
见图8，电阻测试工装还包括位于径向滑块31的横向部311和避空槽71的槽壁711之间的复位弹簧317。具体的，如图中所示，横向部311的外端设有一连接部314，连接部314的端部与避空槽71的槽壁711之间设有复位弹簧317，复位弹簧317的两端分别连接在连接部314的端部与避空槽71的槽壁711。此外，复位弹簧317还可以套设于连接部314的外围，使复位弹簧317的两端分别抵接在横向部311和避空槽71的槽壁711上。
电阻测试工装的工作原理为：
气缸4驱动竖向移动板25沿竖向导柱43下移，从而通过缓冲弹簧27带动缓冲滑块24与竖向滑板21一并下移，直至竖向滑块22的接触平面23与径向滑块31的接触倒圆313抵接。
随着竖向移动板25继续下移，竖向滑块22的接触平面23推动径向滑块31沿环状金属零件1的径向朝外滑动，从而使两个径向滑块31所设的接触针316分别接触环状金属零件1内壁所设的两个沿周向间隔的电触点11，从而将两个电触点11之间的回路导通，从而能够测试两个电触点11之间的回路电阻值。在此过程中，由于缓冲弹簧27的两端分别抵着缓冲滑块24和竖向移动板25，以缓冲来自气缸4的冲击力。测试时，定位杆28插入定位孔12，使环状金属零件1定位。
测试完成后，气缸4带动竖向移动板25上移复位，竖向移动板25通过限位块261带动竖向滑块22上移复位，同时，径向滑块31能够在复位弹簧317的弹性回复力作用下朝内移动而复位，从而使接触针316与电触点11相互分离。
本申请中，通过竖向滑块22和径向滑块31的配合，能够使来自气缸4的竖向推力转化为水平方向上的至少两个不同方向的力，从而能一次性测试环状金属零件1内壁上的多个电触点11，提高测试效率。
上述实施方式仅为本实用新型的优选实施方式，不能以此来限定本实用新型保护的范围，本领域的技术人员在本实用新型的基础上所做的任何非实质性的变化及替换均属于本实用新型所要求保护的范围。
Claims (10)
- 电阻测试工装，用于测试环状金属零件的电阻，所述环状金属零件的内壁设有至少两个沿周向间隔的电触点，其特征在于：所述电阻测试工装包括基座、一个竖向滑块以及若干径向滑块，所述径向滑块的数量与所述电触点的数量相同，所述环状金属零件水平固定于所述基座，所述竖向滑块悬设于所述环状金属零件的正上方，每个所述径向滑块均设有分电路板和沿所述环状金属零件的径向延伸的接触针，所述接触针与所述分电路板电连接，所述竖向滑块可沿竖直方向滑动并与每个所述径向滑块抵接，以带动每个所述径向滑块沿水平方向滑动，从而使每个所述径向滑块所设的接触针接触一个所述电触点。
- 根据权利要求1所述的电阻测试工装，其特征在于：所述电阻测试工装还包括竖向滑板和气缸，所述气缸固接于所述基座，所述气缸用于带动所述竖向滑板沿竖向上、下移动，所述竖向滑块自所述竖向滑板的底部向下延伸，所述竖向滑块呈锥状，所述竖向滑块的侧壁设有接触平面，所述接触平面自上而下逐渐内收，所述接触平面用于与所述径向滑块抵接。
- 根据权利要求2所述的电阻测试工装，其特征在于：所述基座设有避空槽，所述避空槽的下方固定设有导轨，所述导轨沿所述环状金属零件的径向设置，所述径向滑块设于所述避空槽内，所述径向滑块与所述导轨可滑动地连接。
- 根据权利要求3所述的电阻测试工装，其特征在于：所述径向滑块包括横向部和竖向部，所述横向部垂直连接于所述竖向部，使所述径向滑块呈“L”形，所述横向部位于所述避空槽内，所述横向部的底部与所述导轨可滑动连接，所述竖向部安装有所述分电路板和接触针。
- 根据权利要求4所述的电阻测试工装，其特征在于：所述竖向部的顶部边缘设有接触倒圆，所述接触倒圆用于与所述接触平面接触。
- 根据权利要求3所述的电阻测试工装，其特征在于：所述基座包括上基板、下基板、竖向导柱和竖向移动板，所述上基板与所述下基板平行相对并通过竖向导柱彼此固接，所述竖向移动板与所述竖向导柱可滑动地连接，所述气缸固接于所述上基板，所述气缸的活塞杆与所述竖向移动板固接，所述竖向移动板可带动所述竖向滑板沿竖向上、下移动。
- 根据权利要求6所述的电阻测试工装，其特征在于：所述电阻测试工装还包括位于所述竖向移动板和所述竖向滑板之间的缓冲滑块、位于所述竖向移动板和所述缓冲滑块之间的缓冲弹簧以及用于引导所述缓冲滑块沿竖向移动的导向杆，所述导向杆的底端与所述缓冲滑块固接，所述缓冲滑块与所述竖向滑板固接，所述导向杆可滑动地穿设于所述竖向移动板，所述导向杆的顶端穿出于所述竖向移动板，并设有限位块以限制所述导向杆从所述竖向移动板脱落，所述缓冲弹簧套设于所述导向杆外围。
- 根据权利要求6所述的电阻测试工装，其特征在于：所述基座还包括下安装板和上安装板，所述下安装板固接于所述下基板的顶部，所述上安装板固定地设于所述下安装板的上方，所述下安装板与所述上安装板之间设有主电路板，所述主电路板与所述分电路板电连接，所述导轨固定地设于所述下安装板的顶部，所述上安装板开设有所述避空槽。
- 根据权利要求2所述的电阻测试工装，其特征在于：所述竖向滑板的底部设有若干定位杆，所述定位杆朝下延伸，所述环状金属零件的顶部设有定位孔，所述定位杆用于插入所述定位孔。
- 根据权利要求4所述的电阻测试工装，其特征在于：所述横向部与所述避空槽的槽壁之间设有复位弹簧。
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