Hook assembly, waterproof test tool and waterproof test method

Abstract

The application relates to a hook assembly, a waterproof test tool and a waterproof test method. The hook assembly comprises a slide rail, a pair of slide blocks, a pair of support arms and a first driving member. The two slide blocks are slidably arranged on the slide rail. The support arms are slidably arranged on the slide blocks and used for supporting the water heater. The first driving member is drivingly connected with the support arms to drive the support arms to slide relative to the slide blocks along a direction intersecting with the extending direction of the slide rail, so that the water heater is rotated and inclined in a plane formed by the width direction and the length direction of the water heater. The waterproof test tool comprises a base, a mounting frame rotatably arranged on the base and a hook assembly fixedly connected with the mounting frame. The first sliding direction of the hook assembly is perpendicular to the rotating direction of the mounting frame. Thus, the inclination angle of the water heater can be automatically adjusted in the spraying process of the waterproof test, manual adjustment is not needed, and the authenticity and accuracy of test data are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water heater waterproof test, in particular to a hook assembly, a waterproof test tool and a waterproof test method. BACKGROUND

[0002] The waterproof grade of the existing electric water heater shell is determined according to the GB4208-2017 "Shell Protection Grade Code" specification, wherein the IPX2 waterproof grade requires that the test sample can still withstand a total of 10 minutes of spraying after being inclined 15° on two mutually perpendicular planes and the perpendicular line. The current specification only regulates the electrical appliances with a rated voltage not exceeding 72.4kV and requiring waterproof through the shell, and does not make specific provisions for the test tool of household gas water heater products. In order to incline and fix the test sample, the existing technology usually adopts manual adjustment and fixation, which can easily cause the shell to deform during the adjustment and fixation process, thereby causing errors in the test data, and also destroys the continuity of the test, resulting in poor accuracy of the test data. Although there is a way to adjust the inclination direction and angle of the test platform by using a spherical support combined with a sensor in other test fields, but in the waterproof test, such mechanism not only has a complex structure, high test cost, but also is easy to cause the equipment to be damaged by water in the long-term test process, resulting in increased maintenance cost. SUMMARY

[0003] Based on the existing waterproof test tool, the inclination angle of the test sample needs to be adjusted manually, which can cause poor accuracy of the test data, and it is necessary to provide a hook assembly, a waterproof test tool and a waterproof test method.

[0004] A hook assembly for suspending a water heater, comprising:

[0005] a slide rail;

[0006] a pair of slide blocks slidably mounted on the slide rail;

[0007] a pair of support arms slidably mounted on the slide blocks, the support arms being used to support the water heater;

[0008] a first driving member drivingly connected to the support arms to drive the support arms to slide relative to the slide blocks in a direction intersecting the extension direction of the slide rail, for rotating and inclining the water heater in a plane in which the width direction and the length direction of the water heater lie.

[0009] In this way, the water heater is automatically tilted in the plane during the test by the hook assembly without manual adjustment, so as to avoid abnormal test data caused by adjustment and improve the accuracy of test data. Meanwhile, the first driving member only needs to drive the support to move a preset distance in a single direction without the cooperation of a sensor, so that the structure of the first driving member is simplified and the production cost of the hook assembly is reduced.

[0010] In one of the embodiments, the support arm comprises a connecting portion extending along the extension direction of the slide rail and a support portion extending from the connecting portion in a direction away from the slide rail, and the first driving member is fixedly connected to the sliding block and drivingly connected to the connecting portion.

[0011] In this way, the lateral arrangement of the first driving member further reduces the distance between the water heater and the slide rail compared with the arrangement in which the first driving member is arranged towards the water heater and directly drives the support portion of the support arm, so as to improve the stability of the water heater when the water heater is installed on the hook assembly and avoid shaking, and further reserve adjustment space for the adjustment of the distance between the water heater and the slide rail.

[0012] In one of the embodiments, the sliding block has a sliding cavity and first and second mounting holes communicating with the sliding cavity, the connecting portion is arranged through the first mounting hole, the support portion is arranged through the second mounting hole, and the first driving member is fixedly connected to one side of the first mounting hole of the sliding block.

[0013] In this way, the sliding block limits the support arm in movement in directions other than the vertical direction, so that the first driving member only needs to bear the gravity of the support arm and the water heater, which is conducive to the protection of the first driving member.

[0014] In one of the embodiments, the first and second mounting holes are waist-shaped holes, and the lengths of the first and second mounting holes are greater than the length of the support arm.

[0015] In this way, the support arm is inserted into the first mounting hole during actual assembly, and the support portion of the support arm is further arranged through the second mounting hole by rotating the support arm, so that the operation is convenient and the support arm is not easy to be separated from the sliding block.

[0016] In one of the embodiments, the extension direction of the slide rail is a horizontal direction, and the support arm moves in a vertical direction.

[0017] In this way, the water heater rotates more stably and is not easy to shake after being rotated to a preset inclination angle.

[0018] The application further provides a waterproof test tool, which comprises:

[0019] a base;

[0020] a mounting rack rotatably mounted on the base; and

[0021] The hook assembly is fixedly connected to the mounting rack, and the first sliding direction of the hook assembly is perpendicular to the rotating direction of the mounting rack.

[0022] In this way, the waterproof test tool provided by the present application can be inclined in two perpendicular planes, i.e., the required inclined arrangement for testing is achieved, and the water heater is arranged vertically, which is consistent with the actual use state of the water heater, thereby ensuring the authenticity and accuracy of the test data.

[0023] In one of the embodiments, the base comprises a seat body and a plurality of pairs of second driving members arranged on both sides of the seat body, the second driving members being horizontally slidably mounted on the seat body and drivingly connected to the mounting rack to drive the mounting rack to rotate.

[0024] In this way, the water heater does not need to be manually adjusted during the test process after being installed, which ensures the continuity of the waterproof test, thereby improving the accuracy and authenticity of the test data.

[0025] In one of the embodiments, the mounting rack is provided with an adjusting hole;

[0026] The second driving member comprises a hoist motor fixedly connected to the base and a support rod slidably inserted into the adjusting hole, and the hoist motor is drivingly connected to the support rod.

[0027] In this way, the hoist motor lifts the mounting rack vertically, and the adjusting hole provides a sliding space for the support rod during the lifting process, thereby avoiding the phenomenon that the mounting seat is stuck to the base.

[0028] In one of the embodiments, the waterproof test tool further comprises at least one pair of limiting arms mounted on opposite sides of the mounting rack, and the limiting arms are used for clamping the water heater.

[0029] In this way, the stability of the connection between the water heater and the mounting rack is improved.

[0030] The present application further provides a waterproof test method, which adopts the waterproof test tool described above and comprises the following steps:

[0031] S1, suspending the water heater on the support arm of the waterproof test tool;

[0032] S2, drive the support arm to slide relative to the slider along a direction intersecting the extension direction of the slide rail, so as to make the water heater rotate by a first preset angle in a forward direction and a reverse direction respectively in a plane in which the width direction and the length direction of the water heater lie, and spray hot water according to a preset time length respectively;

[0033] S3, drive the mounting frame to rotate by a second preset angle in a forward direction or a reverse direction respectively, and spray hot water according to a preset time length respectively; and

[0034] S4, check the water inlet condition of the shell of the water heater.

[0035] In this way, the water heater is subjected to waterproof test by the waterproof test tool provided in the application, and only the first step of manually installing the water heater to the mounting frame is needed in the whole process. The inclination adjustment of the water heater is automatically adjusted without manual intervention, which ensures the continuity of the test and avoids the influence of manual adjustment on the waterproof test result of the water heater. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 A structure schematic view of a hook assembly provided in the application;

[0037] Figure 2 A structure schematic view of the mounting frame and the limiting arm in the hook assembly shown in Figure 1

[0038] A structure schematic view of the second drive in the hook assembly shown in Figure 3 Figure 1 A structure schematic view of the slider in the hook assembly shown in

[0039] Figure 4 A structure schematic view of a waterproof test tool in an embodiment provided in the application;

[0040] Figure 5 A structure schematic view of the mounting frame and the limiting arm in the hook assembly shown in Figure 4

[0041] Figure 6 A structure schematic view of the second drive in the hook assembly shown in Figure 4

[0042] Reference signs:

[0043] ​​​10, base; 11, seat body; 111, mounting groove; 12, second driving piece; 121, hoist motor; 1211, auxiliary support; 1212, motor body; 1213, first fastening bolt; 122, support rod; 20, mounting frame; 201, adjusting hole; 21, first frame; 22, second frame; 23, shielding plate; 24, reinforcing beam; 30, hook assembly; 31, slide rail; 32, sliding block; 3201, sliding cavity; 3202, first mounting hole; 3203, second mounting hole; 3204, clamping groove; 33, support arm; 331, connecting portion; 332, support portion; 3321, limiting groove; 34, first driving piece; 40, limiting arm; 41, adjusting portion; 4101, adjusting groove; 42, limiting portion; 43, second fastening bolt. DETAILED DESCRIPTION

[0044] In order to make the above objectives, characteristics and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0046] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited.

[0047] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection", "fixed", and the like, should be construed broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0049] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0050] The water heater needs to provide the waterproof level of the product before leaving the factory. The waterproof level of the existing electric water heater is determined according to the GB4208-2017 "Code for Enclosure Protection Level" specification, wherein the IPX2 waterproof level requires that the test sample can withstand a total of 10 minutes of spraying after being inclined 15° on two mutually perpendicular planes and the perpendicular line. The specification only regulates the electrical appliances with a rated voltage not exceeding 72.4kV and requiring waterproof through the shell, and does not make specific provisions for the test tooling of household gas water heater products. In addition, in order to incline and fix the test sample, the existing technology usually adopts manual adjustment and fixing method, which is easy to cause deformation of the shell during the adjustment and fixing process, thereby causing errors in the test data, and also destroys the continuity of the test, resulting in poor accuracy of the test data.

[0051] Although in other test fields, the inclination direction and angle of the test platform can be adjusted by matching the sensor with the spherical support, in the waterproof test, such mechanism not only has a complex structure, high test cost, but also is easy to cause the equipment to be damaged by water in the long-term test process, resulting in an increase in maintenance cost.

[0052] Therefore, it is necessary to provide a hook assembly suitable for a gas water heater and capable of continuously and automatically adjusting the test inclination angle of a test sample, a waterproof test tool and a waterproof test method.

[0053] Referring to Figure 1 , Figure 1 A structural schematic diagram of a hook assembly 30 provided by the present application. The hook assembly 30 provided by the present application is used for suspending a water heater, and includes a slide rail 31, a pair of slide blocks 32, a pair of support arms 33 and a first driving member 34. The two slide blocks 32 are respectively slidably installed on the slide rail 31. The support arms 33 are slidably installed on the slide blocks 32 and are used for supporting the water heater. The first driving member 34 is drivingly connected to the support arms 33 to drive the support arms 33 to slide relative to the slide blocks 32 along a direction intersecting with the extension direction of the slide rail 31, so as to make the water heater rotate and incline in the plane where the width direction and the length direction of the water heater are located. It is worth noting that in the waterproof test, the test placement state of the water heater is the same as the actual installation state, that is, the width direction and the thickness direction of the water heater are horizontal directions, the length direction is a vertical direction, and the plane where the length direction and the width direction are located is the plane where the control panel of the water heater is located. In this way, the test working condition is close to the actual working condition, and the authenticity of the test data is increased. Through the hook assembly 30, the water heater is automatically inclined in the plane during the test, without the need for manual adjustment, so as to avoid the abnormal test data caused by the adjustment process and improve the accuracy of the test data. At the same time, the first driving member 34 only needs to drive the support to move a preset distance along a single direction, without the need for the cooperation of a sensor, so as to simplify the structure of the first driving member 34 and reduce the production cost of the hook assembly 30.

[0054] Referring to Figure 2 , Figure 2 for Figure 1A structure diagram of the support arm 33 and the first driving member 34 in the hanger assembly 30 shown. Optionally, in an embodiment provided in the present application, the support arm 33 comprises a connecting portion 331 and a supporting portion 332, the extending direction of the connecting portion 331 is the same as the extending direction of the slide rail 31, the supporting portion 332 extends from the connecting portion 331 in a direction away from the slide rail 31, and the first driving member 34 is fixedly connected to the sliding block 32 and drivingly connected to the connecting portion 331 of the support arm 33. The first driving member 34 is arranged in the same direction as the extending direction of the slide rail 31, that is, the first driving member 34 is arranged laterally, compared with the arrangement mode that the first driving member 34 is arranged towards the water heater and directly drives the supporting portion 332 of the support arm 33, the distance between the water heater and the slide rail 31 is further reduced, thereby improving the stability of the water heater when the water heater is installed in the hanger assembly 30, avoiding shaking, and further reserving an adjusting space between the water heater and the slide rail 31 for matching different distances between the actual water heater and the wall, facilitating the design of various working conditions, and being beneficial to enriching test data to increase the authenticity and authority of waterproof test. It should be noted that the first driving member 34 is used to drive the support arm 33 to move vertically, the deeper the depth of the support arm 33 inserted into the first driving member 34, the higher the stability of the support arm 33 moving, therefore, in order to ensure the stability of driving, the length of the first driving member 34 along the extending direction of the connecting portion 331 of the support arm 33 usually needs to be greater than the length of the supporting portion 332 of the support arm 33 in the extending direction.

[0055] Further, please refer to Figure 3 , Figure 3 for Figure 1 A structure diagram of the sliding block 32 in the hanger assembly 30 shown. Specifically, in this embodiment provided in the present application, the sliding block 32 has a sliding cavity 3201, and a first mounting hole 3202 and a second mounting hole 3203 communicated with the sliding cavity 3201, the connecting portion 331 is arranged through the first mounting hole 3202, the supporting portion 332 is arranged through the second mounting hole 3203, the first driving member 34 is fixedly connected to one side of the first mounting hole 3202 of the sliding block 32, and the sliding block 32 is further provided with a clamping groove 3204 for clamping the upper edge of the slide rail 31. In this way, the sliding block 32 limits the support arm 33, specifically limits the moving distance of the support arm 33 in directions other than the vertical direction, so that the first driving member 34 only needs to bear the gravity of the support arm 33 and the water heater, which is beneficial to protecting the first driving member 34. It is worth mentioning that, in order to facilitate assembly, the length of the supporting portion 332 of the support arm 33 needs to be less than the vertical length of the second mounting hole 3203 and the vertical length of the first mounting hole 3202, and in actual assembly, the support arm 33 is inserted from the first mounting hole 3202 and the supporting portion 332 is further rotated to pass through the second rotating hole. One side of the first mounting hole 3202 of the sliding block 32 is further provided with a plurality of bolt holes for fixing the first driving member 34.

[0056] Please refer to Figure 2 Optionally, in an embodiment provided by the present application, the support portion 332 is provided with at least one limiting slot 3321 for clamping the water heater.

[0057] Please refer to Figure 1 Optionally, in an embodiment provided by the present application, the extension direction of the slide rail 31 is horizontal, and the moving direction of the support arm 33 is vertical, so that the water heater is more stable when rotating, and is not easy to shake after rotating to the preset inclination. As an alternative, the slide rail 31 can also be arranged vertically, and the support arm 33 moves horizontally. In particular, in this embodiment, an additional support arm 33 is needed to support the weight of the water heater, and the support arm 33 is rotatably connected to the water heater.

[0058] Please refer to Figure 4 , Figure 4 The structure diagram of the waterproof test tool provided by an embodiment of the present application. The waterproof test tool provided by the present application comprises a base 10, a mounting frame 20 and a hook assembly 30. The mounting frame 20 is rotatably mounted on the base 10, the slide rail 31 of the hook assembly 30 is fixedly connected to the mounting frame 20, and the first sliding direction of the hook assembly 30 is perpendicular to the rotating direction of the mounting frame 20. The waterproof test tool provided by the present application realizes the inclination in two mutually perpendicular planes, that is, the required inclination placement for testing. In order to increase the structural strength of the mounting frame 20, the mounting frame 20 specifically comprises a first frame 21 rotatably connected to the base 10, a second frame 22 perpendicular to the first frame 21, and a reinforcing beam 24 fixedly connected to the first frame 21 and the second frame 22 at both ends. In order to simulate the actual use condition of the water heater, the mounting frame 20 further comprises a shielding plate 23 fixedly connected to the second frame 22, which is equivalent to the wall behind the water heater.

[0059] Please refer to Figure 4 and Figure 6 , Figure 6 for Figure 4A structural schematic view of the second driving member 12, specifically, in the embodiment provided in the present application, the base 10 comprises the seat body 11 and a plurality of pairs of second driving members 12 arranged on both sides of the seat body 11, the second driving member 12 is slidably installed on the seat body 11 and drivingly connected to the mounting rack 20 to drive the mounting rack 20 to rotate. Thus, the mounting rack 20 is lifted by the second driving member 12 to realize the inclination of the mounting rack 20, which is simple in structure and facilitates the operation. Specifically, the mounting rack 20 is provided with an adjusting hole 201, the second driving member 12 comprises a hoisting motor 121 fixedly connected to the base 10, a supporting rod 122 slidably inserted into the adjusting hole 201, and the hoisting motor 121 is drivingly connected to the supporting rod 122. The hoisting motor 121 lifts the mounting rack 20 along the vertical direction, and during the lifting process, the adjusting hole 201 provides a sliding space for the supporting rod 122 to avoid the mounting rack 20 from being stuck with the base 10. Further, in order to avoid assembly errors, the seat body 11 is also provided with a mounting groove 111, the hoisting motor 121 comprises an auxiliary support 1211, a motor body 1212 mounted on the auxiliary support 1211, and a first fastening bolt 1213 mounted on the auxiliary support 1211, the first fastening bolt 1213 is slidably inserted into the mounting groove 111 of the seat body 11, and in addition, this also facilitates the adjustment of the preset inclination angle of the mounting rack 20 and the base 10.

[0060] Please further refer to Figure 4 and Figure 5 , Figure 5 for Figure 4 A side view of the mounting rack 20 and the limiting arm 40, optionally, in order to further improve the stability of the water heater during the test process, in an embodiment provided in the present application, the waterproof test tool further comprises a limiting arm 40, the limiting arm 40 comprises an adjusting portion 41 adjustably mounted on the mounting rack 20 and a limiting portion 42 extending from the adjusting portion 41 along the extension direction of the slide rail 31, the adjusting portion 41 is provided with an adjusting groove 4101 and is fastened to the mounting rack 20 by a second fastening bolt 43, and the limiting portion 42 is used for pressing against the water heater towards the slide rail 31.

[0061] The present application also provides a waterproof test method, which adopts the waterproof test tool described above and comprises the following steps:

[0062] S1, suspending the water heater on the supporting arm 33 of the waterproof test tool;

[0063] S2, driving the supporting arm 33 to slide relative to the slide block 32 along a direction intersecting with the extension direction of the slide rail 31, so as to drive the water heater to rotate by a first preset angle in a forward direction and a reverse direction in a plane in which the width direction and the length direction of the water heater are located, and to spray hot water on the water heater according to a preset time length respectively;

[0064] S3, drive the mounting frame 20 to rotate in the forward direction or the reverse direction by a second preset angle respectively, and spray the water heater according to a preset time length respectively; and

[0065] S4, check the water inlet condition of the shell of the water heater.

[0066] Specifically, the sequence of S2 and S3 in the above waterproof test method can be interchanged, as long as the operation of tilting the water heater in two directions respectively can be completed.

[0067] For example, in actual operation, the two first driving members 34 respectively drive the two support arms 33 to move vertically by a first preset distance in two opposite directions, and drive the water heater to rotate and tilt by 15°, and spray the water heater for 150 seconds; the two first driving members 34 respectively drive the two support arms 33 to move vertically by a second preset distance in two opposite directions, and drive the water heater to rotate by 30° in the opposite direction so that the inclination angle of the water heater with the vertical direction is 15°, and spray the water heater for 150 seconds; the two groups of second driving members 12 respectively drive the two ends of the water heater to tilt forward in two opposite directions, and spray the water heater for 150 seconds; the two groups of second driving members 12 respectively drive the two ends of the mounting frame 20 to tilt backward in two opposite directions, and spray the water heater for 150 seconds. After spraying, check the water inlet condition of the shell of the water heater. If water enters, it should not affect the normal operation of the equipment or damage the safety; water does not accumulate on the insulation components that can cause leakage tracking along the creepage distance; water does not enter the live parts (live parts refer to conductive wires or conductive components that are intended to be energized during normal use, including neutral wires by convention, but excluding PEN wires. The control panel in the heating element, the connector port of each live part, etc.), or enter the winding that is not allowed to operate in a wet state; water does not accumulate near the cable head or enter the cable.

[0068] Any combination of the technical features of the above-mentioned embodiments can be made. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combination of the technical features does not exist, it should be considered as the scope of the present application.

[0069] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A hook assembly for suspending a water heater, characterized in that, include: Slide rail (31); A pair of sliders (32) are slidably mounted on the slide rail (31). The sliders (32) have a slide cavity (3201) and a first mounting hole (3202) and a second mounting hole (3203) communicating with the slide cavity (3201). The first mounting hole (3202) and the second mounting hole (3203) are respectively oblong holes. A pair of support arms (33) are slidably mounted on the slider (32). The support arms (33) are used to support the water heater. The support arms (33) include a connecting portion (331) extending along the extension direction of the slide rail (31) and a supporting portion (332) extending from the connecting portion (331) in a direction away from the slide rail (31). The lengths of the first mounting hole (3202) and the second mounting hole (3203) are respectively greater than the length of the support arm (33). The connecting portion (331) passes through the first mounting hole (3202), and the supporting portion (332) passes through the second mounting hole (3203). The first driving member (34) is fixedly connected to one side of the first mounting hole (3202) of the slider (32). The first driving member (34) drives the connecting part (331) connected to the support arm (33) to drive the support arm (33) to slide relative to the slider (32) in a direction intersecting the extension direction of the slide rail (31), so as to make the water heater rotate and tilt in the plane in its width and length directions.

2. The hook assembly according to claim 1, characterized in that, The slide rail (31) extends in a horizontal direction, and the support arm (33) moves vertically.

3. A waterproof testing fixture, characterized in that, include: Base (10); Mounting bracket (20), which is rotatably mounted on the base (10); as well as The hook assembly (30) as described in any one of claims 1 or 2, wherein the slide rail (31) of the hook assembly (30) is fixedly connected to the mounting frame (20), and the first sliding direction of the hook assembly (30) is perpendicular to the rotation direction of the mounting frame (20).

4. The waterproof testing fixture according to claim 3, characterized in that, The base (10) includes a seat (11) and multiple pairs of second drive members (12) arranged on both sides of the seat (11). The second drive members (12) are horizontally slidably mounted on the seat (11) and driven to be connected to the mounting frame (20) to drive the mounting frame (20) to rotate.

5. The waterproof testing fixture according to claim 4, characterized in that, The mounting bracket (20) has an adjustment hole (201); The second driving component (12) includes a lifting motor (121) fixedly connected to the base (10) and a support rod (122) slidably inserted into the adjustment hole (201), wherein the lifting motor (121) is driven to be connected to the support rod (122).

6. The waterproof testing fixture according to claim 3, characterized in that, The waterproof testing fixture also includes at least one pair of limiting arms (40) installed on opposite sides of the mounting bracket (20), the limiting arms (40) being used to press the water heater toward the slide rail (31).

7. A waterproof testing method, characterized in that, The waterproof testing fixture described in any one of claims 3 to 6 includes the following steps: The water heater was suspended on the support arm (33) of the waterproof test fixture. The drive support arm (33) slides relative to the slider (32) in a direction intersecting with the extension direction of the slide rail (31), so that the water heater rotates by a first preset angle in the positive and negative directions in the plane containing its own width and length directions, and sprays water on the water heater for a preset duration. The drive mounting bracket (20) rotates at a second preset angle in the forward or reverse direction respectively, and sprays water onto the water heater for a preset duration respectively; as well as Check the water heater's casing for water ingress.

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