A gas tightness testing tool for cable gland

Abstract

The utility model provides a gland air tightness detection tool, including a main body, a cover body and a clamping mechanism, wherein: a detection cavity with a top opening is provided on the main body, an air extraction hole connected to the detection cavity is provided on the side wall of the main body, and the air extraction hole is connected to an external air extraction device through an air extraction pipeline; the cover body is sealed and covered on the main body, and a docking hole is provided on the cover body, and the docking hole matches the shape of the gland to be detected, and the gland to be detected is sealed and plugged into the docking hole; the clamping mechanism is used to press the gland downward. By using the gland air tightness detection tool provided by the utility model, after the gland to be detected is sealed and plugged into the docking hole on the cover body, the gland is pressed downward by the clamping mechanism, and the air extraction device can be opened to implement the sealing detection of the gland, which improves the detection efficiency and does not cause damage to the gland.

Description

Technical Field

[0001] The utility model relates to the field of connectors, in particular to a gas tightness detection tool for a cable gland. Background Art

[0002] In order to reduce costs, when designing wiring harnesses, many manufacturers will cancel connectors in certain application scenarios and replace connectors with cable glands. Although cable glands can reduce wiring harness costs, it is difficult to implement air tightness testing on cable glands.

[0003] The cable gland cannot be like a traditional quick-insert connector, which only needs to be plugged into the mating end during testing. The front end of the cable gland has threads and there is no mating end that can be quickly connected. The current method for testing the air tightness of the cable gland is to embed a nut corresponding to the cable gland on the box body, and lock the cable gland in the nut with a wrench during the test. Then start the air tightness test, and remove the cable gland with a wrench after the test is completed. The existing method of testing the air tightness of the cable gland takes a lot of time, and the cable gland may cause irreversible damage during the process of locking the cable gland. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a cable gland air tightness detection tool, and its specific technical solution is as follows:

[0005] A gland air tightness detection tool, comprising a main body, a cover body and a pressing mechanism, wherein:

[0006] The main body is provided with a detection cavity with a top opening, and the side wall of the main body is provided with an air extraction hole connected with the detection cavity, and the air extraction hole is connected with an external air extraction device through an air extraction pipeline;

[0007] The cover body is sealed and covered on the main body. A docking hole is provided on the cover body. The docking hole matches the shape of the gland to be tested. The gland to be tested is sealed and plugged into the docking hole.

[0008] The clamping mechanism is used to fix the wire harness on the cable gland and to press the cable gland downward through the wire harness.

[0009] By adopting the gland air tightness testing tool provided by the utility model, the gland to be tested is seal-inserted into the docking hole on the cover body and then the clamping mechanism presses the gland downward, and the exhaust device can be opened to implement the sealing test of the gland, which improves the testing efficiency and will not cause damage to the gland.

[0010] In some embodiments, an annular sealing groove is provided at the top opening of the detection cavity, a sealing ring is provided in the sealing groove, and the lower surface of the cover body is pressed tightly against the sealing ring.

[0011] Ensure that the lower surface of the cover body forms a sealed cover with the top opening of the detection cavity to prevent air leakage at the contact point between the lower surface of the cover body and the top opening of the detection cavity, thereby affecting the detection result.

[0012] In some embodiments, a first screw hole is provided on the upper end surface of the main body, a second screw hole matching the first screw hole is provided on the cover body, and the cover body is detachably screwed to the main body via a first screw that passes through the second screw hole and the first screw hole in sequence.

[0013] This ensures that the cover can be tightly pressed onto the main body in a sealed manner, and facilitates disassembly, assembly and maintenance of the cover.

[0014] In some embodiments, an annular sealing surface matching the sealing ring on the gland is formed at the top opening of the docking hole, and the sealing ring on the gland is pressed tightly against the sealing surface.

[0015] Ensure that the outer contour of the cable gland forms a sealed contact with the docking hole to prevent air leakage at the contact point between the outer contour of the cable gland and the docking hole, which will affect the test results.

[0016] In some embodiments, the clamping mechanism includes a first lifting drive unit, a second lifting drive unit and a pressure plate, wherein: the first lifting drive unit and the second lifting drive unit are arranged on the side walls of the main body, the pressure plate is located above the upper cover, the two ends of the pressure plate are respectively connected to the driving ends of the first lifting drive unit and the second lifting drive unit, and a limiting groove for fixing the wiring harness on the cable gland is arranged at the edge of the pressure plate; the first lifting drive unit and the second lifting drive unit are configured to synchronously drive the pressure plate to press down so as to press the cable gland into the docking hole.

[0017] A simple pressing mechanism is provided, which can stably and quickly press the cable gland into the docking hole.

[0018] In some embodiments, the first lifting drive unit and the second lifting drive unit have the same structure. The first lifting drive unit includes a cylinder and a connecting plate. The cylinder body of the cylinder is fixedly mounted on the side wall of the main body, and the connecting plate is horizontally connected to the telescopic rod of the cylinder. A third screw hole is provided on the connecting plate, and a fourth screw hole matching the third screw hole is provided on the end of the pressing plate. The end of the pressing plate is detachably connected to the connecting plate via a second screw that sequentially penetrates the fourth screw hole.

[0019] The disassembly, assembly and maintenance of the first lifting drive unit and the second lifting drive unit are facilitated.

[0020] In some embodiments, at least two detection cavities are provided on the main body, at least two exhaust holes corresponding to the detection cavities are provided on the side wall of the main body, and at least two docking holes corresponding to the detection cavities are provided on the cover body.

[0021] The system can detect more than two glands simultaneously, which further improves the detection efficiency. In addition, when a leak occurs in one detection chamber, the other detection chambers can still be detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them,

[0023] Figure 1 It is a schematic diagram of the disassembled structure of the gland air tightness detection tooling of the embodiment of the utility model at one viewing angle;

[0024] Figure 2 It is a schematic diagram of the disassembled structure of the cable gland air tightness detection tooling of the embodiment of the utility model from another perspective;

[0025] Figure 3 It is a schematic structural diagram of the gland air tightness detection tooling of the embodiment of the utility model at one viewing angle;

[0026] Figure 4 This is a schematic structural diagram of the cable gland air tightness detection tooling according to an embodiment of the utility model from another perspective.

[0027] Figures 1 to 4 Included:

[0028] Main body 1: detection cavity 11, sealing groove 12, sealing ring 13;

[0029] Cover body 2: docking hole 21;

[0030] The clamping mechanism 3 includes a first lifting driving part 31 , a second lifting driving part 32 , a pressing plate 33 , a cylinder 311 , a connecting plate 312 , and a limiting groove 331 ;

[0031] Air extraction pipeline 4;

[0032] First screw 5;

[0033] Second screw 6;

[0034] Cable gland 100, wiring harness 200. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] like Figures 1 to 4As shown, the gland air tightness detection tool in the embodiment of the utility model comprises a main body 1, a cover body 2 and a pressing mechanism 3, wherein:

[0037] The main body 1 is provided with a detection cavity 11 with a top opening, and the side wall of the main body 1 is provided with an air extraction hole connected with the detection cavity 11 , and the air extraction hole is connected with an external air extraction device through an air extraction pipeline 4 .

[0038] The cover body 2 is sealed on the main body 1 . A docking hole 21 is provided on the cover body 2 . The docking hole 21 matches the shape of the cable gland 100 to be detected. The cable gland 100 to be detected is sealed and plugged into the docking hole 21 .

[0039] The pressing mechanism is used to fix the wire harness 200 on the cable gland 100 and press the cable gland 100 downward through the wire harness 200 .

[0040] The optional working process of the cable gland air tightness detection tool of the utility model embodiment is as follows:

[0041] First, the wire harness 200 on the cable gland 100 is fixed on the pressing mechanism, and then the cable gland 100 is inserted into the docking hole 21. Subsequently, the pressing mechanism presses the cable gland 100 downward through the wire harness 200 to ensure that the cable gland 100 is stably fixed in the docking hole 21.

[0042] Next, the external exhaust device is turned on, and the exhaust device exhausts the detection chamber 11 through the exhaust pipe 4. After the exhaust continues for a predetermined period of time, the vacuum degree in the detection chamber 11 is tested. The airtightness of the cable gland 100 is determined based on the test result.

[0043] It can be seen that by using the gland air tightness testing tool provided by the utility model, the gland to be tested is seal-inserted into the docking hole on the cover body and then the clamping mechanism presses the gland downward, and the vacuum device can be opened to implement the sealing test of the gland, which improves the testing efficiency and will not cause damage to the gland.

[0044] like Figure 1 to Figure 2 As shown, optionally, an annular sealing groove 12 is provided at the top opening of the detection chamber 11, a sealing ring 13 is provided in the sealing groove 12, and the lower surface of the cover body 2 is pressed against the sealing ring 13. Such a configuration can ensure that the lower surface of the cover body 2 and the top opening of the detection chamber 11 form a sealed cover, preventing air leakage at the contact point between the cover body 2 and the top opening of the detection chamber 11, thereby affecting the detection result.

[0045] That is to say, after the cable gland 100 is plugged into the docking hole 21 , the air leakage in the detection chamber 11 during the airtightness detection process can only come from the cable gland 100 .

[0046] Optionally, a first screw hole is provided on the upper end surface of the main body 1, and a second screw hole matching the first screw hole is provided on the cover body 2, and the cover body 2 is detachably screwed to the main body 1 via a first screw 5 that passes through the second screw hole and the first screw hole in sequence. In this way, it can be ensured that the cover body 2 can be tightly pressed against the main body 1 in a sealed manner, and the disassembly and assembly maintenance of the cover body 2 is convenient.

[0047] Optionally, an annular sealing surface matching the sealing ring on the cable gland 100 is formed at the top opening of the docking hole 21. In this way, after the cable gland 100 is plugged into the docking hole 21, the sealing ring on the cable gland 100 is pressed against the sealing surface at the top opening of the docking hole 21, thereby ensuring that the outer contour of the cable gland 100 forms a sealed contact with the docking hole 21, preventing air leakage at the contact point between the cable gland 100 and the docking hole 21, which affects the detection result.

[0048] Optionally, the clamping mechanism 3 includes a first lifting drive unit 31, a second lifting drive unit 32 and a pressing plate 33, wherein: the first lifting drive unit 31 and the second lifting drive unit 32 are arranged on the side walls of the main body 1, the pressing plate 33 is located above the upper cover 2, the two ends of the pressing plate 33 are respectively connected to the driving ends of the first lifting drive unit 31 and the second lifting drive unit 32, and a limiting groove 331 for fixing the wiring harness 200 on the cable gland 100 is arranged at the edge of the pressing plate 33. Optionally, the limiting groove 331 is an arc-shaped groove matching the wiring harness 200. The wiring harness 200 can be fixed by inserting the wiring harness 200 into the limiting groove 331.

[0049] The first lifting drive unit 31 and the second lifting drive unit 32 are configured to synchronously drive the pressing plate 33 to press downward, so as to stably press the cable gland 100 into the docking hole 21 .

[0050] Optionally, the first lifting drive unit 31 and the second lifting drive unit 32 have the same structure. Figure 1 As shown, taking the first lifting drive unit 31 as an example, it includes a cylinder 311 and a connecting plate 312 , the cylinder body of the cylinder 311 is fixedly mounted on the side wall of the main body 1 , and the connecting plate 312 is horizontally connected to the telescopic rod of the cylinder 311 .

[0051] A third screw hole is provided on the connecting plate 312, and a fourth screw hole matching the third screw hole is provided at the end of the pressing plate 33. The end of the pressing plate 33 is detachably connected to the connecting plate 312 via a second screw 6 which passes through the fourth screw hole and the third screw hole in sequence.

[0052] Optional, such as Figures 1 to 4As shown, at least two detection chambers 11 are provided on the main body 1. At least two air extraction holes corresponding to the detection chambers 11 are provided on the side wall of the main body 1, and each air extraction hole is connected to an external air extraction device through an air extraction pipe 4. Correspondingly, at least two docking holes 21 corresponding to the detection chambers 11 are provided on the cover body 2.

[0053] Figures 1 to 4 In the embodiment, three detection chambers 11 are arranged on the main body 1, and correspondingly, three air extraction holes are arranged on the side wall of the main body 1, and three docking holes 21 are arranged on the cover body 2. Figures 1 to 4 The cable gland air tightness detection tool in the embodiment can simultaneously detect three cable glands 100, thereby improving the detection efficiency. In addition, when one of the detection cavities 11 has a gas leakage fault, the other two detection cavities 11 can still be detected.

[0054] The above description of the utility model is sufficiently detailed and has certain particularities. Those skilled in the art should understand that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the utility model should fall within the scope of protection of the utility model. The scope of protection claimed by the utility model is defined by the claims, not by the above description in the embodiments.

Claims

1. A gland air tightness detection tool, characterized in that: The gland air tightness detection tool comprises a main body, a cover body and a pressing mechanism, wherein: The main body is provided with a detection cavity with a top opening, and the side wall of the main body is provided with an air extraction hole connected with the detection cavity, and the air extraction hole is connected with an external air extraction device through an air extraction pipeline; The cover body is sealingly covered on the main body, and a docking hole is provided on the cover body. The docking hole matches the shape of the cable gland to be tested, and the cable gland to be tested is sealingly inserted into the docking hole; The clamping mechanism is used to fix the wire harness on the cable gland and to clamp the cable gland downward via the wire harness.

2. The cable gland air tightness testing tool as claimed in claim 1, characterized in that: An annular sealing groove is arranged at the top opening of the detection cavity, a sealing ring is arranged in the sealing groove, and the lower surface of the cover body is pressed tightly against the sealing ring.

3. The cable gland air tightness testing tool as claimed in claim 1, characterized in that: A first screw hole is arranged on the upper end surface of the main body, a second screw hole matching the first screw hole is arranged on the cover body, and the cover body is detachably screwed to the main body via a first screw which passes through the second screw hole and the first screw hole in sequence.

4. The cable gland air tightness testing tool as claimed in claim 1, characterized in that: An annular sealing surface matching the sealing ring on the gland is formed at the top opening of the docking hole, and the sealing ring on the gland is pressed tightly against the sealing surface.

5. The cable gland air tightness testing tool as claimed in claim 1, characterized in that: The clamping mechanism includes a first lifting drive unit, a second lifting drive unit and a pressing plate, wherein: The first lifting drive unit and the second lifting drive unit are arranged on the side walls of the main body, the pressing plate is located above the cover body, the two ends of the pressing plate are respectively connected to the driving ends of the first lifting drive unit and the second lifting drive unit, and the edge of the pressing plate is provided with a limiting groove for fixing the wiring harness on the cable gland; The first lifting drive unit and the second lifting drive unit are configured to synchronously drive the pressing plate to press down so as to press the cable gland tightly into the docking hole.

6. The cable gland air tightness testing tool as claimed in claim 5, characterized in that: The first lifting drive unit and the second lifting drive unit have the same structure. The first lifting drive unit includes a cylinder and a connecting plate. The cylinder body of the cylinder is fixedly mounted on the side wall of the main body. The connecting plate is horizontally connected to the telescopic rod of the cylinder. The connecting plate is provided with a third screw hole, the end of the pressing plate is provided with a fourth screw hole matching the third screw hole, and the end of the pressing plate is detachably connected to the connecting plate via a second screw which sequentially passes through the fourth screw hole.

7. The cable gland air tightness testing tool as claimed in claim 1, characterized in that: At least two detection cavities are arranged on the main body, at least two air extraction holes corresponding to the detection cavities are arranged on the side wall of the main body, and at least two docking holes corresponding to the detection cavities are arranged on the cover body.

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