阅读说明：本技术 防水密封性能检测装置 (Waterproof sealing performance detection device ) 是由 方俊钦 于 2021-07-21 设计创作，主要内容包括：本发明公开了一种防水密封性能检测装置,包括：注水机构及喷淋机构,喷淋机构设有多个,且多个喷淋机构沿端子箱的周向方向间隔设置,各个喷淋机构均包括喷嘴,各个喷嘴的开口均朝向端子箱,注水机构的输出端与各个喷淋机构中的喷嘴相连通。当注水机构的输出端向各个喷淋机构中喷嘴提供水源时,此时,位于不同方位的各个喷嘴同时喷水,端子箱可同时受到来自不同方向喷出的喷淋水,使得喷淋过程较为均匀,可有效还原真实下雨环境,进而可提高检测的精准性。(The invention discloses a waterproof sealing performance detection device, which comprises: water injection mechanism and spray the mechanism, spray the mechanism and be equipped with a plurality ofly, and a plurality ofly spray the circumferential direction interval setting of mechanism along the terminal case, each sprays the mechanism and all includes the nozzle, and the opening of each nozzle all faces the terminal case, and the output of water injection mechanism and each spray the nozzle in the mechanism and be linked together. When the output of water injection mechanism provided the water source to each spray mechanism in the nozzle, at this moment, each nozzle that is located different position sprayed water simultaneously, and the terminal case can receive simultaneously and come from not equidirectional spun shower water for it is comparatively even to spray the process, can effectively restore true rainy environment, and then can improve the accurate nature that detects.)

1. The utility model provides a waterproof sealing performance detection device which characterized in that includes: water injection mechanism and spray the mechanism, it is equipped with a plurality ofly to spray the mechanism, and is a plurality of it sets up along the circumference direction interval of terminal case to spray the mechanism, each spray the mechanism and all include the nozzle, each the opening of nozzle all faces the terminal case, water injection mechanism's output and each spray in the mechanism the nozzle is linked together.

2. The apparatus according to claim 1, wherein among the plurality of spraying mechanisms, one of the spraying mechanisms is a main spraying mechanism, and the remaining spraying mechanisms are auxiliary spraying mechanisms; the waterproof sealing performance detection device further comprises a main splitter, the main splitter is arranged on the main spraying mechanism and is provided with a main inlet, a first outlet and a second outlet which are communicated with each other, the main inlet is communicated with the output end of the water injection mechanism, the first outlet is communicated with the nozzle on the main spraying mechanism, and the second outlet is communicated with the nozzle on the auxiliary spraying mechanism.

3. The apparatus according to claim 2, wherein each of the spraying mechanisms includes a plurality of the nozzles, and a plurality of the first outlets and a plurality of the second outlets are provided, each of the nozzles of the main spraying mechanism corresponds to and communicates with each of the first outlets of the main splitter, and each of the nozzles of the auxiliary spraying mechanism corresponds to and communicates with each of the second outlets of the main splitter.

4. The apparatus according to claim 3, wherein each of the auxiliary spraying mechanisms has an auxiliary flow divider, each of the auxiliary flow dividers has an auxiliary inlet and a plurality of third outlets, the auxiliary inlets of the plurality of auxiliary flow dividers are in one-to-one correspondence with the second outlets of the main flow divider, and the third outlets of each of the auxiliary flow dividers are in one-to-one correspondence with the nozzles of the corresponding auxiliary spraying mechanism and are in communication with each other.

5. The apparatus according to claim 4, wherein a water outlet branch pipe is connected between each second outlet of the main splitter and the corresponding auxiliary inlet of the auxiliary splitter, and a water outlet main pipe is connected between the output end of the water injection mechanism and the main inlet of the main splitter.

6. The apparatus according to claim 4, wherein a main water spray pipe is connected between each of the nozzles of the main spray mechanism and the corresponding first outlet, and an auxiliary water spray pipe is connected between a plurality of the nozzles of each of the auxiliary spray mechanisms and a plurality of the third outlets of the corresponding auxiliary diverter.

7. The device for detecting the waterproof sealing performance of any one of claims 1 to 6, wherein each of the spraying mechanisms further comprises a bracket, the bracket is of a rod-shaped structure, the bracket comprises a fixed end and a telescopic end which are connected, the telescopic end can be stretched in the axial direction of the bracket, and the nozzle is arranged on the telescopic end.

8. The device for detecting the waterproof sealing performance of the water-proof sealing device of claim 7, wherein the support further comprises a support rod, the support rod is arranged on the telescopic end, an included angle is formed between the axial direction of the support rod and the axial direction of the telescopic end, and the support rod is also provided with the nozzle.

9. The device for detecting the waterproof sealing performance of any one of claims 1 to 6, wherein the water injection mechanism comprises a water tank, a water pump and a water inlet pipe, the bottom of the water tank is provided with a universal rotating wheel, two ends of the water inlet pipe are respectively communicated with a water inlet of the water pump and a water outlet of the water tank, and the water outlet of the water pump is an output end of the water injection mechanism.

10. The device for detecting the waterproof sealing performance of claim 9, wherein the water injection mechanism further comprises a filter assembly, and the filter assembly is arranged at the water outlet of the water tank and communicated with the water inlet pipe;

or the filtering component is arranged in the water inlet pipe.

Technical Field

The invention relates to the technical field of waterproof tests, in particular to a waterproof sealing performance detection device.

Background

Equipment working outdoors, particularly electrical equipment, needs to maintain stable working conditions and safety performance under variable natural environments. The waterproof performance is an important index for evaluating the safety performance of the power equipment. For example, in order to verify whether the waterproof performance of the junction terminal box meets the standard, a waterproof test is usually performed on the junction terminal box before the junction terminal box is put into operation. The general waterproof test is to spray the operation with water jet equipment setting aside the terminal box, however, current water jet equipment is when carrying out the waterproof performance test to the terminal box, and the test result error is great, and test structure is accurate enough.

Disclosure of Invention

In view of the above, it is necessary to provide a waterproof sealing performance detection apparatus, which can effectively improve the accuracy of the detection of the sealing performance of the terminal box.

A waterproof sealing performance detecting device includes: water injection mechanism and spray the mechanism, it is equipped with a plurality ofly to spray the mechanism, and is a plurality of it sets up along the circumference direction interval of terminal case to spray the mechanism, each spray the mechanism and all include the nozzle, each the opening of nozzle all faces the terminal case, water injection mechanism's output and each spray in the mechanism the nozzle is linked together.

In the structure of the waterproof sealing performance detection device, the spraying mechanisms are provided with a plurality of spraying mechanisms which can be arranged at intervals along the circumferential direction of the terminal box, meanwhile, each spraying mechanism comprises a nozzle, the opening of each nozzle faces the terminal box, and the output end of the water injection mechanism is communicated with the nozzles in the spraying mechanisms. So, work as the output of water injection mechanism is to each spray in the mechanism the nozzle provides the water source, at this moment, is located each in different position the nozzle sprays water simultaneously, and the terminal box can receive simultaneously and come from equidirectional spun shower water for it is comparatively even to spray the process, can effectively restore true rainy environment, and then can improve the accurate nature of detection.

The technical solution is further explained below:

in one embodiment, among the plurality of spraying mechanisms, one spraying mechanism is a main spraying mechanism, and the rest spraying mechanisms are auxiliary spraying mechanisms; the waterproof sealing performance detection device further comprises a main splitter, the main splitter is arranged on the main spraying mechanism and is provided with a main inlet, a first outlet and a second outlet which are communicated with each other, the main inlet is communicated with the output end of the water injection mechanism, the first outlet is communicated with the nozzle on the main spraying mechanism, and the second outlet is communicated with the nozzle on the auxiliary spraying mechanism.

In one embodiment, each of the spraying mechanisms includes a plurality of the nozzles, and the first outlets and the second outlets are provided in plural, each of the nozzles on the main spraying mechanism corresponds to and communicates with each of the first outlets on the main splitter in a one-to-one manner, and each of the nozzles on the auxiliary spraying mechanism corresponds to and communicates with each of the second outlets on the main splitter in a one-to-one manner.

In one embodiment, each of the auxiliary spraying mechanisms is provided with an auxiliary splitter, each of the auxiliary splitters is provided with an auxiliary inlet and a plurality of third outlets, the auxiliary inlets of the auxiliary splitters are communicated with the second outlets of the main splitters in a one-to-one correspondence manner, and the third outlets of each of the auxiliary splitters are communicated with the nozzles of the corresponding auxiliary spraying mechanism in a one-to-one correspondence manner.

In one embodiment, a water outlet branch pipe is communicated between each second outlet of the main splitter and the corresponding auxiliary inlet of the auxiliary splitter, and a water outlet main pipe is communicated between the output end of the water injection mechanism and the main inlet of the main splitter.

In one embodiment, a main water spray pipe is communicated between each nozzle on the main spray mechanism and the corresponding first outlet, and an auxiliary water spray pipe is communicated between a plurality of nozzles on each auxiliary spray mechanism and a plurality of third outlets on the corresponding auxiliary flow divider.

In one embodiment, the spraying mechanisms further comprise brackets, each bracket is of a rod-shaped structure and comprises a fixed end and a telescopic end, the fixed end and the telescopic end are connected, the telescopic ends can be stretched and retracted along the axial direction of the brackets, and the nozzles are arranged on the telescopic ends.

In one embodiment, the support further comprises a support rod, the support rod is arranged on the telescopic end, an included angle is formed between the axial direction of the support rod and the axial direction of the telescopic end, and the support rod is also provided with the nozzle.

In one of them embodiment, water injection mechanism includes water tank, water pump and inlet tube, the bottom of water tank is equipped with the universal wheel that rotates, the both ends of inlet tube respectively with the water inlet of water pump with the delivery port intercommunication of water tank, the delivery port of water pump is the output of water injection mechanism.

In one embodiment, the water injection mechanism further comprises a filter assembly, and the filter assembly is arranged at the water outlet of the water tank and communicated with the water inlet pipe; or the filtering component is arranged in the water inlet pipe.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Furthermore, the drawings are not to scale of 1:1, and the relative dimensions of the various elements in the drawings are drawn only by way of example and not necessarily to true scale. In the drawings:

fig. 1 is a schematic structural view of a waterproof sealing performance detection apparatus according to an embodiment of the present invention;

FIG. 2 is an enlarged view of the structure of FIG. 1 at circle A;

fig. 3 is an enlarged view of the structure at the circle B in fig. 1.

The elements in the figure are labeled as follows:

10. a waterproof sealing performance detection device; 110. a water injection mechanism; 111. a water tank; 112. a water pump; 113. a water inlet pipe; 120. a spraying mechanism; 121. a main spray mechanism; 122. an auxiliary spraying mechanism; 123. a nozzle; 124. a support; 1241. a fixed end; 1242. a telescopic end; 130. a main splitter; 131. a primary inlet; 132. a first outlet; 133. a second outlet; 140. an auxiliary current divider; 141. an auxiliary inlet; 142. a third outlet; 150. a water outlet branch pipe; 160. a water outlet main pipe; 171. a main spray pipe; 172. an auxiliary spray pipe; 20. a terminal box.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1, an embodiment of the present application provides a waterproof sealing performance detecting apparatus 10, including: a water injection mechanism 110 and a spraying mechanism 120. The spraying mechanisms 120 are provided in plurality, and the plurality of spraying mechanisms 120 are arranged at intervals along the circumferential direction of the terminal box 20, each spraying mechanism 120 includes a nozzle 123, the opening of each nozzle 123 faces the terminal box 20, and the output end of the water injection mechanism 110 is communicated with the nozzles 123 in each spraying mechanism 120.

In the structure of the waterproof sealing performance detection device 10, since the plurality of spraying mechanisms 120 are provided, and the plurality of spraying mechanisms 120 can be arranged at intervals along the circumferential direction of the terminal box 20, meanwhile, since each spraying mechanism 120 includes the nozzle 123, the opening of each nozzle 123 faces the terminal box 20, and the output end of the water injection mechanism 110 is communicated with the nozzle 123 in each spraying mechanism 120. Therefore, when the output end of the water injection mechanism 110 provides water sources to the nozzles 123 of the spraying mechanisms 120, at the moment, the nozzles 123 in different directions spray water simultaneously, and the terminal box 20 can receive the sprayed water from different directions simultaneously, so that the spraying process is uniform, the real rain environment can be effectively restored, and the detection accuracy can be improved.

The phrase "the plurality of shower mechanisms 120 are provided at intervals in the circumferential direction of the terminal box 20" means that the plurality of shower mechanisms 120 are provided at intervals around the terminal box 20, and the terminal box 20 is sequentially kept to receive shower water sprayed in a plurality of directions. Specifically, when the terminal box 20 is of a cylindrical structure, the plurality of spraying mechanisms 120 may be arranged at intervals in the circumferential direction of the terminal box 20; when the terminal box 20 is a cube or other structure, a plurality of shower mechanisms 120 may be spaced around the circumference of the terminal box 20 and around the circumference of the terminal box 20.

Specifically, in one embodiment, the output end of the water injection mechanism 110 includes a water outlet, and the nozzles 123 of each spraying mechanism 120 can be connected to the same water outlet through an adapter.

Optionally, in another embodiment, the output end of the water injection mechanism 110 includes a plurality of water outlets, and each water outlet is in one-to-one correspondence and communication with the nozzle 123 in each spraying mechanism 120.

Referring to fig. 1, in an embodiment based on the above embodiments, one of the spraying mechanisms 120 is a main spraying mechanism 121, and the rest of the spraying mechanisms 120 are auxiliary spraying mechanisms 122. As shown in fig. 2, the waterproof sealing performance detection apparatus 10 further includes a main diverter 130. The main splitter 130 is provided with a main inlet 131, a first outlet 132 and a second outlet 133 which are communicated with each other. The main inlet 131 is communicated with the output end of the water injection mechanism 110, the first outlet 132 is communicated with the nozzle 123 on the main spray mechanism 121, and the second outlet 133 is communicated with the nozzle 123 on the auxiliary spray mechanism 122. Thus, the water injection mechanism 110 can provide a water source for the main flow divider 130, and after entering the main flow divider 130, the water can flow to the nozzles 123 on the main spraying mechanism 121 through the first outlets 132 and flow to the nozzles 123 on the auxiliary spraying mechanisms 122 through the second outlets 133, so that the terminal box 20 can receive the water sprayed from multiple directions to reduce the raining environment more accurately.

Specifically, as shown in fig. 1 and fig. 2, in the present embodiment, the main flow divider 130 is disposed on the main shower mechanism 121.

It should be noted that the "main splitter 130" is a splitter valve, which is composed of an inlet and a plurality of outlets. Specifically, when there are two outlets, the main splitter 130 is a three-way valve; when the number of outlets exceeds two, the main splitter 130 is a multi-way valve.

It should be noted that the secondary spraying mechanism 122 includes at least one. Specifically, in the present embodiment, there are three secondary spray mechanisms 122. The main spraying mechanism 121 and the three auxiliary spraying mechanisms 122 are arranged around the terminal box 20 at intervals.

Alternatively, the main spray mechanism 121 and the three auxiliary spray mechanisms 122 are arranged at equal intervals around the terminal box 20.

On the basis of the above embodiments, in an embodiment, as shown in fig. 1 and fig. 2, each spraying mechanism 120 includes a plurality of nozzles 123, and a plurality of first outlets 132 and second outlets 133 are provided, each nozzle 123 on the main spraying mechanism 121 corresponds to and communicates with each first outlet 132 on the main flow divider 130 one by one, and each nozzle 123 on the auxiliary spraying mechanism 122 corresponds to and communicates with each second outlet 133 on the main flow divider 130 one by one. The nozzle is spouted and is equipped with a plurality ofly, so, can make the water spray condition that terminal box 20 received press close to true rainy environment more, and the concrete quantity of nozzle 123 does not receive specific restriction, and the quantity of nozzle 123 can increase according to experimental demand to this reduction goes out the experimental condition who accords with actual conditions more.

It should be noted that "each nozzle 123 on the secondary spraying mechanism 122 corresponds to and communicates with each second outlet 133 on the main splitter 130 one by one" includes two embodiments, wherein the nozzle 123 may directly communicate with the second outlet 133. Alternatively, the nozzle 123 may communicate with the second outlet via an indirect connection, such as a transition mechanism such as a conduit or adapter.

Specifically, in the present embodiment, the plurality of nozzles 123 of the same spraying mechanism 120 are sequentially arranged at intervals in the longitudinal direction, so that each part of the terminal box 20 can be sprayed in the longitudinal direction.

In order to adjust the spraying angle of the spraying mechanism 120 during the spraying process, the nozzles 123 are optionally universally adjustable nozzles 123.

Referring to fig. 1 to 3, in an embodiment based on the above embodiments, each of the auxiliary spraying mechanisms 122 is provided with an auxiliary flow divider 140. Each of the auxiliary diverters 140 is provided with an auxiliary inlet 141 and a plurality of third outlets 142 communicating with each other. The auxiliary inlets 141 of the auxiliary diverters 140 are in one-to-one correspondence with the second outlets 133 of the main diverters 130, and the third outlets 142 of each auxiliary diverter 140 are in one-to-one correspondence with the nozzles 123 of the corresponding auxiliary spraying mechanism 122. In this manner, the water in the main diverter 130 can be diverted to each nozzle 123 on each secondary spray mechanism 122.

It should be noted that the "auxiliary flow divider 140" is also a flow dividing valve. Specifically, in the present embodiment, each of the auxiliary flow dividers 140 is provided with four third outlets 142, and the water entering from the auxiliary inlets 141 can flow to the corresponding four nozzles 123 through the four third outlets 142 respectively.

Optionally, in another embodiment, when the output end of the water injection mechanism 110 includes a plurality of outlets, the main spray mechanism 121 and each of the auxiliary spray mechanisms 122 may be provided with an auxiliary flow divider 140, and the auxiliary inlets 141 of each of the auxiliary flow dividers 140 are in one-to-one communication with each of the outlets of the water injection mechanism 110, so as to provide water sources for the main spray mechanism 121 and the auxiliary spray mechanisms 122.

Specifically, in the present embodiment, the output end of the water injection mechanism 110 includes an outlet, the main splitter 130 is disposed on the main spray mechanism 121, and the three auxiliary splitters 140 are correspondingly disposed on the three auxiliary spray mechanisms 122. The main inlet 131 of the main splitter 130 is connected to the output end of the water injection mechanism 110, each first outlet 132 is respectively communicated with each nozzle 123 of the main spray mechanism 121, the auxiliary inlets 141 of the three auxiliary splitters 140 are correspondingly communicated with the three second outlets 133 of the main splitter 130, and the third outlets 142 of each auxiliary splitter 140 are correspondingly communicated with the nozzles 123 of the corresponding auxiliary spray mechanism 122. When the output end of the water injection mechanism 110 outputs the spray water, after entering the main splitter 130, the water may flow to the nozzles 123 on the main jet mechanism through the first outlets 132, flow to the auxiliary splitters 140 disposed on the auxiliary spray mechanisms 122 through the second outlets 133, and flow to the nozzles 123 on the auxiliary spray mechanisms 122 through the third outlets 142 in the auxiliary splitters 140. In this way, all the nozzles 123 of the main shower mechanism 121 and the auxiliary shower mechanism 122 can spray shower water toward the terminal box 20.

Referring to fig. 1 to 3, in an embodiment based on the above embodiments, a water outlet branch pipe 150 is connected between each second outlet 133 of the main splitter 130 and the corresponding auxiliary inlet 141 of the auxiliary splitter 140. Therefore, the main spraying mechanism 121 and the auxiliary spraying mechanism 122 can be communicated, and the water injection mechanism 110 can simultaneously supply water to the main spraying mechanism 121 and the auxiliary spraying mechanism 122 through the main splitter 130.

Optionally, a flow control valve is disposed on each outlet branch 150. Therefore, the water input into the corresponding auxiliary diverter 140 of each auxiliary spraying mechanism 122 can be adjusted by the flow regulating valve, so that the water sprayed from the nozzles 123 at the same position on each auxiliary spraying mechanism 122 has the same spraying pressure, and the water spraying amount received by the terminal box 20 from all directions is uniform.

Further, in one embodiment, a water outlet manifold 160 is connected between the output end of the water injection mechanism 110 and the main inlet 131 of the main flow divider 130.

Referring to fig. 1 to fig. 3, based on the above embodiments, in an embodiment, a main spray pipe 171 is connected between each nozzle 123 of the main spray mechanism 121 and the corresponding first outlet 132. A plurality of secondary spray pipes 172 are communicated between the plurality of nozzles 123 on each secondary spray mechanism 122 and the plurality of third outlets 142 on the corresponding secondary diverters 140.

Alternatively, in another embodiment, a flow regulating valve is also provided on each of the main spray pipes 171 and/or each of the auxiliary spray pipes 172. Thus, the flow rate and the water pressure of the water sprayed from the nozzle 123 can be adjusted according to different test requirements, and the applicability of the waterproof sealing performance detection device 10 is improved.

On the basis of the above embodiments, in an embodiment, the spraying mechanisms 120 further include brackets 124. The bracket 124 is a rod-shaped structure, and the bracket 124 includes a fixed end 1241 and a telescopic end 1242 connected together. The telescopic end 1242 is telescopic along the axial direction of the bracket 124, and the nozzle 123 is disposed on the telescopic end 1242. In this way, the height of the bracket 124 can be adjusted according to the height of the object to be measured, so that the height of the nozzle 123 in the longitudinal direction can be controlled. The telescopic support 124 can make the waterproof sealing performance detection device 10 more applicable.

Further, in one embodiment, the bracket 124 further includes a support rod (not shown). The support rod is disposed on the telescopic end 1242, and an included angle is formed between an axial direction of the support rod and an axial direction of the telescopic end 1242, and the support rod is also provided with a nozzle 123. Thus, the spraying range of the spraying mechanism 120 can be wider.

Optionally, in another embodiment, nozzles 123 are provided on both the support rod and the telescoping end 1242. Alternatively, only the support bar is provided with the nozzle 123.

Alternatively, in another embodiment, the nozzles 123 located on the support rods of the main shower mechanism 121 may communicate with the first outlet 132 through the main shower pipe 171. Or, the nozzle 123 on the support rod of the main spraying mechanism 121 may be directly communicated with the water outlet end of the water injection mechanism 110.

Alternatively, in another embodiment, the nozzles 123 located on the support rods of the secondary spray mechanism 122 may communicate with the third outlet 142 through the secondary spray pipes 172. Alternatively, the nozzles 123 on the support rods of the auxiliary spraying mechanism 122 may be directly communicated with the water outlet end of the water injection mechanism 110.

Optionally, a plurality of nozzles 123 are disposed on the supporting rod, and the nozzles 123 are spaced along the axial direction of the supporting rod, so that the spraying range of the spraying mechanism 120 can be further expanded.

Referring to fig. 1, on the basis of the above embodiment, in an embodiment, the water injection mechanism 110 includes a water tank 111, a water pump 112 and a water inlet pipe 113. The bottom of the water tank 111 is provided with universal rotating wheels (not marked in the figure). So, can conveniently remove water tank 111, reduce workman's transport intensity. Two ends of the water inlet pipe 113 are respectively communicated with a water inlet of the water pump 112 and a water outlet of the water tank 111, and the water outlet of the water pump 112 is an output end of the water injection mechanism 110.

If there are impurities in the water tank 111, in order to prevent the impurities from entering the water pump 112 when the water pump 112 performs pumping operation, and thus the water pump 112 cannot work normally, the water injection mechanism 110 further includes a filter assembly. The filter assembly is disposed at the water outlet of the water tank 111 and is communicated with the water inlet pipe 113. Thus, the filter assembly can block impurities from entering the water pump 112, and the service life of the water pump 112 is prolonged.

Optionally, in another embodiment, a filter assembly is provided within the inlet pipe 113.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.