Waterproof test fixture for cylinder-penetrating connector

Abstract

The utility model provides a waterproof test fixture for a penetrating cylinder piece connector, comprising a rack, the rack is provided with at least one test assembly, the test assembly comprises a fixing piece and a driving piece, the fixing piece is internally provided with an inwardly recessed test groove and a flow channel communicated with the test groove, the test groove is provided with a product, and the driving piece is provided with a through hole. An output shaft of the driving piece pushes at least part of the product into the testing groove and fixes the product, and an ejection assembly is further arranged in the fixing piece and used for ejecting the product; wherein the flow channel is internally provided with a one-way valve which allows fluid to enter the testing groove, and the testing groove is internally provided with a sensing piece which is used for testing the pressure in the testing groove; the plurality of test assemblies are arranged on the rack, and the inflation device can be connected with the plurality of test assemblies at the same time, so that the synchronous test of a plurality of products is realized, and the test efficiency of the connector is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and in particular relates to a waterproof test fixture for cylinder-penetrating connectors. Background Art

[0002] The through-cylinder connector is a key component commonly used to connect the internal and external wiring harnesses of the engine. Its design enables it to adapt to the vibration, high temperature, waterproof and oil sealing requirements of the actual use environment of the vehicle to improve the connection reliability and durability of the wiring harness. Therefore, the through-cylinder connector products have high requirements for waterproof and sealing testing; in the test equipment of the existing technology, the air tightness of the product is usually tested to achieve the purpose of testing waterproof sealing. It usually includes a cylinder and a fixing seat, and the fixing seat is provided with a groove matching the product. The groove is provided with a sensor and an air pipe connected to the groove. The product is manually inserted into the groove, and the cylinder is driven to push and compact the product to prevent the groove from being inflated and the product from detaching. When the air pressure in the groove reaches a certain level, the inflation is stopped, and the pressure change of the sensor is observed to determine whether the product is leaking.

[0003] However, in this testing method, since the cylinder needs to continuously squeeze the product and fix it in the groove, and the groove also adapts to the shape of the product, it is difficult to manually pull out the product after the test is completed, which reduces the testing efficiency. At the same time, the testing equipment usually has only one testing station, and can only test a single product each time, further reducing the testing efficiency of the product. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] The utility model provides a waterproof test fixture for a through-cylinder connector, aiming to solve the problems of difficulty in removing through-cylinder connector products and low testing efficiency in the prior art.

[0006] (2) Technical solution

[0007] The utility model provides a waterproof test fixture for a cylinder-penetrating connector, comprising a frame, at least one test assembly being provided on the frame, the test assembly comprising a fixing member and a driving member, the fixing member being provided with an inwardly recessed test slot and a flow channel connected to the test slot, a product being provided on the test slot, the output shaft of the driving member pushing at least part of the product into the test slot and fixing it, the fixing member being further provided with an ejection assembly for ejecting the product; wherein a one-way valve is provided in the flow channel for only allowing fluid to enter the test slot, and the test slot being provided with a sensing member for testing the pressure in the test slot.

[0008] Furthermore, the ejection assembly includes an ejector pin and an elastic member, and an ejection cavity corresponding to the ejection assembly is provided in the fixing member. One end of the ejector pin is slidably connected to the ejection cavity, and the other end passes through the fixing member and abuts against the product. The elastic member is arranged in the ejection cavity and is respectively pressed against the bottom of the ejector pin and the bottom wall of the ejection cavity.

[0009] Furthermore, the elastic force of the elastic member is smaller than the thrust of the driving member.

[0010] Furthermore, two ejection assemblies are provided in the fixing member, and the two ejection assemblies are symmetrically arranged.

[0011] Furthermore, a protrusion is fixedly provided on the top end of the ejector pin, a through hole corresponding to the protrusion is provided on the product, and the protrusion is passed through the through hole.

[0012] Furthermore, the diameter D1 of the bump is smaller than the diameter D2 of the ejector pin, so that a step is formed at the bottom of the bump, and the step abuts against the bottom of the peripheral wall of the through hole.

[0013] Furthermore, a pressure plate is provided at the bottom of the output shaft, and a pressure pin is provided in the pressure plate and extends toward the convex block and corresponds to the convex block.

[0014] Furthermore, the rack is provided with two test assemblies arranged in parallel.

[0015] Furthermore, a control console is provided on the rack, and the control console is electrically connected to the two test components respectively.

[0016] Furthermore, the sensing element is a pressure sensor, and the driving element is a cylinder.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] By setting an ejection assembly in the fixing part, the product can be better balanced and fixed before loading to prevent the product from being squeezed and deformed due to incorrect placement and affecting the test results. After the test is completed, the product can be automatically ejected under the action of the ejection assembly, which improves the convenience of loading and unloading the product. At the same time, by setting multiple test assemblies on the rack, and the inflation device can be connected to multiple test assemblies at the same time, the synchronous testing of multiple products can be achieved, further improving the testing efficiency of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 This is a cross-sectional view of the utility model Figure 1 .

[0021] Figure 3 This is a cross-sectional view of the utility model Figure 2 .

[0022] Figure 4 This is a schematic diagram of the test component structure of the present utility model.

[0023] Figure 5 This is a schematic diagram of the product structure of the utility model.

[0024] Figure 6 For this utility model Figure 2 Enlarged view of point A.

[0025] Figure 7 For this utility model Figure 3 Enlarged view of points B and C.

[0026] Figure markings: 1-frame, 11-console, 2-test assembly, 21-fixing part, 211-test slot, 212-flow channel, 213-top cavity, 22-driving part, 221-output shaft, 222-pressure plate, 223-pressure needle, 3-product, 31-through hole, 4-one-way valve, 5-sensing part, 6-ejection assembly, 61-ejector pin, 611-bump, 612-step, 62-elastic part. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0028] like Figures 1-7 As shown, the utility model provides a waterproof test fixture for a through-cylinder connector, comprising a frame 1, on which at least one test assembly 2 is provided, each of the test assemblies 2 comprising a fixing member 21 and a driving member 22, wherein the fixing member 21 is provided with an inwardly recessed test slot 211 and a flow channel 212 communicating with the test slot 211, wherein the test slot 211 is provided with a product 3, and a pressing plate 222 is fixed at the bottom of the output shaft 221 of the driving member 22, wherein the output shaft 221 moves toward the product 3 and drives the pressing plate 222 to push at least part of the product 3 into the test slot 211 and fix it; a one-way valve 4 is provided in the flow channel 212 for allowing only fluid (including gas) to enter the test slot 211, and a sensing member 5 for testing the pressure in the test slot 211 is provided in the test slot 211;

[0029] During testing, fluid enters the test slot 211 through the flow channel 212. Because the product 3 blocks the test slot 211, a sealed space is formed within the test slot 211. As fluid continues to flow in, the pressure within the test slot 211 increases. When the pressure reaches a specified threshold, fluid flow is stopped. The change in the reading of the sensor 5 is then observed to determine whether the product 3 is leaking or defective. If the reading remains unchanged, the product 3 is well sealed; if it decreases, the product 3 is defective. After the test is completed, the output shaft 221 drives the pressure plate 222 to separate from the product 3. Because the test slot 211 is contoured to the shape of the product 3, the shape of the test slot 211 is highly compatible with the product 3. Furthermore, the product 3, pressurized by the pressure plate 222, becomes stuck within the test slot 211, making it difficult to remove. In actual testing, some products 3 may be difficult to remove due to excessive weight or the depth of the test slot 211.

[0030] In order to solve the above problem, the fixing member 21 of the present invention is further provided with an ejection assembly 6, which includes an ejector pin 61 and an elastic member 62. A top cavity 213 corresponding to the ejection assembly 6 is provided in the fixing member 21. One end of the ejector pin 61 is slidably connected to the top cavity 213, and the other end passes through the fixing member 21 and abuts against the product 3. The elastic member 62 is arranged in the top cavity 213 and is respectively pressed against the bottom of the ejector pin 61 and the bottom wall of the top cavity 213. The elastic force of the elastic member 62 is much smaller than the thrust of the driving member 22.

[0031] Before the test, the ejector pin 61 is pushed out toward the pressing plate 222 by the elastic force of the elastic member 62 . At this time, the product 3 is placed on the test slot 211 and abuts against the top of the ejector pin 61 for fixation.

[0032] During testing, the pressing plate 222 is pressed downward and abuts against the product 3. Since the elastic force of the elastic member 62 is less than the thrust of the driving member 22, the ejector pin 61 moves downward under the thrust of the pressing plate 222, and the elastic member 62 is compressed synchronously until the product 3 completely seals the test slot 211 or at least a portion of the product 3 abuts against the top surface of the fixing member 21, thereby achieving test fixation of the product 3 and starting the test.

[0033] After the test is completed, the pressing plate 222 moves upward, and the ejector pin 61 rises under the elastic force of the elastic member 62, thereby achieving synchronous and automatic ejection of the product 3, thereby effectively solving the problem of difficulty in removing the product 3 in the prior art;

[0034] Further, in order to better fix and balance the product 3 before testing, a plurality of the ejection assemblies 6 can be arranged in the fixing member 21, so that the product 3 is supported in multiple directions and moves more stably; in the embodiment, two ejection assemblies 6 are symmetrically arranged in the fixing member 21.

[0035] Preferably, the elastic member 62 is a spring, and in actual testing, the elastic member 62 can also be replaced by a cylinder, a lead screw or other driving modes.

[0036] Specifically, as shown in Figures 5-6 In the embodiment, the part of the product 3 exposed outside the test groove 211 extends along the horizontal direction of the top surface of the fixing member 21, and two symmetrically arranged through holes 31 are arranged in the fixing member 21, so that the top end of the ejector pin 61 is provided with a protrusion 611 corresponding to the through hole 31, and the protrusion 611 is arranged in the through hole 31 when the product 3 is placed; through the arrangement of the protrusion 611, the balance stability of the product 3 is further improved, so that the problem that the product 3 deviates during pushing and causes poor testing effect is prevented.

[0037] Preferably, the diameter D1 of the protrusion 611 is smaller than the diameter D2 of the ejector pin 61, so that a step 612 is formed at the bottom of the protrusion 611, and when the product 3 is placed, the protrusion 611 is arranged in the through hole 31, and the bottom of the wall of the through hole 31 abuts on the step 612.

[0038] Further, as shown in Figure 7 When the product 3 is thin, the product 3 may be deformed when being pressed and pushed by the pressing plate 222, and then the deformed product 3 enters the test groove 211 and affects the testing result; in the embodiment, the bottom of the pressing plate 222 is further provided with a pressing pin 223 extending towards the protrusion 611 and corresponding to the protrusion 611; when the pressing pin 223 is pressed with the pressing plate 222, the pressing pin 223 can first abut on the product 3 or the ejector pin 61, or the pressing pin 223 and the pressing plate 222 can simultaneously abut on the product 3; through the arrangement of the pressing pin 223, when the product 3 is pushed downward by the pressing plate 222, most of the pressure is located at the connection between the pressing pin 223 and the ejector pin 61, so that the pressing plate 222 is effectively prevented from being damaged or the product 3 is effectively prevented from being deformed, and the pushing quality of the pressing plate 222 is further improved.

[0039] It should be noted that, as shown in Figure 7As shown, in this embodiment, in order to prevent the product 3 from being crushed during the downward movement of the product 3, the height of the protrusion 611 is greater than the depth of the through hole 31, so that the top end of the protrusion 611 passes through the through hole 31 and extends toward the pressure plate 222, so that during the downward movement of the product 3, the pressure pin 223 only abuts against the protrusion 611; when part of the product 3 moves downward and abuts against the top surface of the fixing member 21, under the action of the elastic member 62, the ejector pin 61 continues to move downward until the pressure pin 223 abuts against the upper end wall of the through hole 31, and the pressure plate 222 stops moving downward. At this time, the top surface of the fixing member 21 and the pressure pin 223 simultaneously abut against the lower upper end surface of the through hole 31, and part of the protrusion 611 is still arranged in the through hole 31, thereby realizing multi-directional fixation of the product 3 in the up and down directions and the horizontal direction, thereby improving the stability of the test and ensuring the accuracy of the test effect.

[0040] Specifically, in this embodiment, the driving member 22 is a cylinder, but in actual use, a screw rod or a motor can also be used to drive the lifting of the pressing plate 222;

[0041] Furthermore, the sensing element 5 is a pressure sensor.

[0042] Specifically, the rack 1 can be provided with a plurality of the test assemblies 2 to perform synchronous or independent testing. In this embodiment, the rack 1 is provided with two test assemblies 2 arranged in parallel. A control console 11 is further provided on one side of the rack 1. The control console 11 is electrically connected to the driving member 22 and the sensing member 5 in the test assembly 2, respectively. Thus, the control console 11 is used to control the synchronous or independent operation of the plurality of test assemblies 2, thereby improving the testing efficiency.

[0043] It should be noted that, in this embodiment, a vertical test method is adopted. In actual application, the present invention can also be set to a horizontal structure without affecting the accuracy of its test results.

[0044] Furthermore, the test fixture in the present invention also includes an inflation device (not shown), which is respectively connected in series or in parallel with the flow channel 212 in each of the test components 2, and the inflation device is electrically connected to the console 11. By cooperating with the console 11 and the inflation device, the synchronous or independent operation of multiple test components 2 can be controlled.

[0045] The following is a detailed description of the working principle of the utility model;

[0046] During testing, the upper end of the ejector pin 61 moves upward to above the fixing member 21 under the elastic force of the elastic member 62, and then the product 3 is brought into contact with the ejector pin 61, so that the through hole 31 is sleeved on the protrusion 611 and abuts against the step 612. At this time, part of the product 3 can also be inserted into the test slot 211 at the same time.

[0047] Next, the output shaft 221 and the pressing plate 222 are driven downward by the console 11. During the downward movement, the pressing pin 223 first abuts against the ejector pin 61, thereby causing the product 3 to move downward synchronously. Under the compression of the elastic member 62, the product 3 is gradually pushed or pressed into the test slot 211 until it is at a preset test position. At this point, the output shaft 221 and the pressing plate 222 stop moving downward and remain in contact with and secure the product 3.

[0048] Furthermore, the product 3 in the fixed state seals the test slot 211. At this time, the console 11 drives the inflation device to simultaneously inflate multiple or a single test slot 211. The sensor 5 senses and records the pressure change in the test slot 211. When the pressure reaches a preset value, the inflation device stops inflating. The quality of the product is determined by the pressure change in the test slot 211.

[0049] After the test is completed, the output shaft 221 and the pressing plate 222 move upward, and the ejector pin 61 drives the product 3 to be ejected synchronously under the elastic force of the elastic member 62, so as to facilitate the unloading and removal of the product 3 and the loading operation of the next product 3.

[0050] The innovation of the present utility model lies in that an ejection assembly is arranged in the fixing part, so that the product can be better balanced and fixed before loading to prevent the extrusion deformation of the product due to incorrect placement from affecting the test results. After the test is completed, the product can be automatically ejected under the action of the ejection assembly, thereby improving the convenience of loading and unloading the product. At the same time, by arranging multiple test assemblies on the rack, and the inflation device can be connected to multiple test assemblies at the same time, synchronous testing of multiple products can be achieved, further improving the testing efficiency of the connector.

[0051] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A waterproof test fixture for cylinder connectors, characterized in that: The invention comprises a frame (1), wherein at least one test assembly (2) is provided on the frame (1), wherein the test assembly (2) comprises a fixing member (21) and a driving member (22), wherein an inwardly recessed test slot (211) and a flow channel (212) communicating with the test slot (211) are provided in the fixing member (21), wherein a product (3) is provided in the test slot (211), and an output shaft (221) of the driving member (22) pushes at least a portion of the product (3) into the test slot (211) and fixes the product, and wherein an ejection assembly (6) is further provided in the fixing member (21) for ejecting the product (3); A one-way valve (4) is provided in the flow channel (212) for allowing only fluid to enter the test slot (211), and a sensor (5) for testing the pressure in the test slot (211) is provided in the test slot (211).

2. A waterproof test fixture for a through-cylinder connector according to claim 1, characterized in that: The ejection assembly (6) includes an ejector pin (61) and an elastic member (62); a top cavity (213) corresponding to the ejection assembly (6) is provided in the fixing member (21); one end of the ejector pin (61) is slidably connected to the top cavity (213), and the other end passes through the fixing member (21) and abuts against the product (3); the elastic member (62) is arranged in the top cavity (213) and is respectively pressed against the bottom of the ejector pin (61) and the bottom wall of the top cavity (213).

3. A waterproof test fixture for a through-cylinder connector according to claim 2, characterized in that: The elastic force of the elastic member (62) is smaller than the thrust of the driving member (22).

4. A waterproof test fixture for a cylinder connector according to claim 3, characterized in that: Two ejection assemblies (6) are provided in the fixing member (21), and the two ejection assemblies (6) are symmetrically arranged.

5. A waterproof test fixture for a through-cylinder connector according to claim 2, characterized in that: A protrusion (611) is fixedly provided at the top end of the ejector pin (61), a through hole (31) corresponding to the protrusion (611) is provided on the product (3), and the protrusion (611) is passed through the through hole (31).

6. A waterproof test fixture for a cylinder connector according to claim 5, characterized in that: The diameter D1 of the protrusion (611) is smaller than the diameter D2 of the ejector pin (61), so that a step (612) is formed at the bottom of the protrusion (611), and the step (612) abuts against the bottom of the peripheral wall of the through hole (31).

7. A waterproof test fixture for a through-cylinder connector according to claim 6, characterized in that: A pressure plate (222) is provided at the bottom of the output shaft (221), and a pressure needle (223) is provided in the pressure plate (222) and extends toward the convex block (611) and corresponds to the convex block (611).

8. A waterproof test fixture for a through-cylinder connector according to claim 1, characterized in that: The frame (1) is provided with two test assemblies (2) arranged in parallel.

9. A waterproof test fixture for a cylinder connector according to claim 8, characterized in that: A control console (11) is also provided on the frame, and the control console (11) is electrically connected to the two test components (2) respectively.

10. A waterproof test fixture for a cylinder connector according to claim 1, characterized in that: The sensing component (5) is a pressure sensor, and the driving component (22) is a cylinder.

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