An hourglass-type electrostatic charging device

Abstract

The present invention relates to an hourglass-type electrostatic charging device, which is characterized in that it includes a first hourglass-type charging part and a second hourglass-type charging part. The outer parts of the first hourglass-type charging part and the second hourglass-type charging part are fixedly connected. A first induction part is provided at the necking position of the first hourglass-type charging part, and a first external conductive part electrically connected to the inside of the first hourglass-type charging part is provided on the outside of the first hourglass-type charging part. A second induction part is provided at the necking position of the second hourglass-type charging part, and a second external conductive part electrically connected to the inside of the second hourglass-type charging part is provided on the outside of the second hourglass-type charging part. The first induction part is connected to the second external conductive part, and the second induction part is connected to the first external conductive part. A conductive connection member with symmetric upper and lower ends extending into the two parts is provided between the first hourglass-type charging part and the second hourglass-type charging part. The hourglass-type electrostatic charging device further includes an electrostatic charging display component. The device of the present invention has no mechanical motion power components and has an obvious power generation effect.

Description

Technical Field

[0001] The present invention relates to an electrostatic charging device, and particularly to an hourglass-type electrostatic charging device. Background Art

[0002] At present, the main methods of electrostatic charging are: triboelectric charging, induction charging, and conduction charging. An electrostatic charging device (abbreviated as an electrostatic generator) is different from the widely used induction generator. Although both are devices for generating current, a generator usually uses electromagnetic induction to generate large-current alternating or direct current as a power source, while an electrostatic generator usually can only generate a relatively small current or charge, and is mainly used for experiments and demonstrations. The two have the same purpose but different principles. In a sense, the electrostatic generator is the "ancestor" of the generator. In history, there were many types of electrostatic generators. The most representative ones are: the world's first simple and practical triboelectric generator invented by Otto von Guericke, the mayor of Magdeburg, Germany in 1661, and the disk-type electrostatic induction generator developed by the British scientist Wimshurst in 1882 after researching various electrostatic generators, which has been in use until now. Most of the numerous electrostatic generators mainly rely on mechanical motion, either through friction or through induction to generate static electricity. The overall structure is relatively complex and prone to wear, and the cost is relatively high, and the ornamental value is not good. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an hourglass-type electrostatic charging device that is simple to operate, and has obvious and intuitive power generation effect.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An hourglass-type electrostatic charging device includes a first hourglass-type charging part and a second hourglass-type charging part. The first hourglass-type charging part and the second hourglass-type charging part are fixedly connected to the outside. A first induction part is provided at the necking position of the first hourglass-type charging part. An first external conductive part that is electrically connected to the inside of the first hourglass-type charging part is provided on the outside of the first hourglass-type charging part. A second induction part is provided at the necking position of the second hourglass-type charging part. A second external conductive part that is electrically connected to the inside of the second hourglass-type charging part is provided on the outside of the second hourglass-type charging part. The first induction part is connected to the second external conductive part, and the second induction part is connected to the first external conductive part. A conductive connection member with symmetrically arranged upper and lower ends extending into the two parts is provided between the first hourglass-type charging part and the second hourglass-type charging part. The hourglass-type electrostatic charging device further includes an electrostatic charging display component.

[0006] The first hourglass-type charging part and the second hourglass-type charging part have the same structure, and each includes an hourglass-shaped container, conductive sand, and a conductive layer. The conductive sand is encapsulated in the hourglass-shaped container, and the conductive layer is provided on the inner surfaces of the two bottom surfaces of the hourglass-shaped container.

[0007] Both ends of the described first external conductive part are respectively connected to the conductive layers on the two bottom surfaces of the first hourglass electrostatic charging part.

[0008] Both ends of the described second external conductive part are respectively connected to the conductive layers on the two bottom surfaces of the second hourglass electrostatic charging part.

[0009] The described hourglass container is made of insulating material.

[0010] The described conductive layer is a conductive coating, a conductive film or a conductive plate.

[0011] The described conductive sand is solid particles with conductive ability.

[0012] Both the described first induction part and the second induction part are induction coils.

[0013] The described electrostatic charging display component is a metal foil display, including a metal foil, and the metal foil is connected to the first external conductive part and / or the second external conductive part.

[0014] The described electrostatic charging display component is a moving part display, including an insulating wire or an insulating cord rod connected between the first external conductive part and the second external conductive part, and a conductive ball or a conductive ring is sleeved on the insulating wire or the insulating cord rod. The conductive ball or the conductive ring can move on the insulating wire or the insulating cord rod and can contact the first external conductive part and the second external conductive part.

[0015] The described electrostatic charging display component is a channel display, including an insulating annular or linear channel, which penetrates and is fixedly connected between the first external conductive part and the second external conductive part. A conductor ball is arranged inside the insulating annular or linear channel. The conductor ball can freely roll inside the insulating annular or linear channel and can contact the first external conductive part and the second external conductive part inside the insulating annular or linear channel.

[0016] The hourglass electrostatic charging device further includes a base, and the base is respectively arranged outside the two bottom surfaces of the first hourglass electrostatic charging part and the second hourglass electrostatic charging part.

[0017] The hourglass electrostatic charging device further includes a transparent housing, and the transparent housing is arranged outside the first hourglass electrostatic charging part and the second hourglass electrostatic charging part.

[0018] The working process of an hourglass - type electrostatic charging device: Initially, the conductive sand is placed in the upper half of the device and accumulates at the necking position. Both ends of the conductive connecting piece are in contact with the conductive sand in the first hourglass - type charging part and the second hourglass - type charging part respectively to achieve electrical connection. The conductive sand uniformly falls under the action of gravity. The first induction part and the second induction part carry extremely weak charges, which are generated by charge fluctuations, cosmic rays, electromagnetic induction or residual charges after the last operation. The first induction part or the second induction part senses that the conductive sand about to fall in its own hourglass - type charging part has opposite charges, and the conductive sand about to fall in the other hourglass - type charging part has the same charges. After the conductive sand falls into the bottom conductive layer, it will increase the charge of the other induction part, and then make the conductive sand about to fall induce more charges, realizing self - excited positive feedback. When the charge accumulates enough, it is displayed through the electrostatic charging display component.

[0019] When the electrostatic charging display component is a metal foil display, the metal foils move away from each other due to being charged.

[0020] When the electrostatic charging display component is a single - ornament display, the conductive ball or conductive ring moves towards and contacts the first outer conductive part or the second outer conductive part due to electrostatic attraction. After contact, it has the same charge as the contacted part, and is repelled to the other outer conductive part due to having the same charge, realizing continuous movement.

[0021] When the electrostatic charging display component is a ring - shaped channel display, the freely rolling conductor ball moves towards and contacts the first outer conductive part or the second outer conductive part due to electrostatic attraction. After contact, it has the same charge as the contacted part, and is repelled to the other outer conductive part due to having the same charge, and the conductor ball moves continuously in the insulating ring - shaped channel.

[0022] Compared with the existing technologies, the beneficial effects of the present invention are as follows:

[0023] The hourglass - type electrostatic charging device of the present invention has no mechanical movement power components. The charging principle is essentially positive - feedback induction self - charging, and the power source is the gravitational potential energy of the conductive sand. This device has a clever concept, an exquisite structure, and combines scientificity and ornamental value. It is easy to use and operate, and the power - generation effect is obvious and intuitive. It is used for teaching demonstrations and popular science demonstrations, is durable, and is conducive to collection. Compared with the existing electrostatic generators, its manufacturing cost is low, and the economic benefits are remarkable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of Embodiment 1.

[0025] Figure 2 It is a schematic structural diagram of the first hourglass - type charging part.

[0026] Figure 3 It is a schematic structural diagram of Embodiment 2.

[0027] Figure 4 It is a schematic structural diagram of Embodiment 3.

[0028] Figure 5 It is a schematic structural diagram of Embodiment 4.

[0029] In the figure: the first hourglass - type electrification part 1, the second hourglass - type electrification part 2, the first induction part 3, the first external conductive part 4, the second induction part 5, the second external conductive part 6, the conductive connection part 7; the metal foil 8, the insulating wire or insulating rope rod 9, the conductive ball or conductive ring 10, the insulating annular channel 11, the conductor ball 12, the transparent housing 13, the base 14.

[0030] The hourglass - type container 101, the conductive sand 102, the conductive layer 103, the neck - constricted sand - dropping port 104. Specific Embodiments

[0031] The following further describes the specific embodiments of the present invention with reference to the accompanying drawings:

[0032] As Figures 1-5 , an hourglass - type electrostatic electrification device includes a first hourglass - type electrification part 1 and a second hourglass - type electrification part 2. The outside of the first hourglass - type electrification part 1 is fixedly connected to the outside of the second hourglass - type electrification part 2. The structures of the first hourglass - type electrification part 1 and the second hourglass - type electrification part 2 are the same, and each includes an hourglass - type container 101, conductive sand 102, and a conductive layer 103. The hourglass - type container 101 encapsulates the conductive sand 102, and the inner surfaces of the two bottom surfaces of the hourglass - type container 101 are provided with the conductive layer 103. The hourglass - type container 101 is made of insulating materials, including glass and plastic. The conductive sand 102 is solid particles with conductive ability. The solid particles are spherical or quasi - spherical particles, including non - metal particles with a conductive outer layer made of metal, and the particle size is less than 0.25 mm.

[0033] The outside of the first hourglass - type electrification part 1 is provided with a first external conductive part 4 that is electrically connected to the inside of the first hourglass - type electrification part 1. The outside of the second hourglass - type electrification part 2 is provided with a second external conductive part 6 that is electrically connected to the inside of the second hourglass - type electrification part 2. The first external conductive part 4 and the second external conductive part 6 are made of linear or plate - strip - shaped conductors. The two ends of the first external conductive part 4 respectively extend into the hourglass - type container 101 and are connected to the conductive layer 103 on the two bottom surfaces of the first hourglass - type electrification part 1. The two ends of the second external conductive part 6 respectively extend into the hourglass - type container 101 and are connected to the conductive layer 103 on the two bottom surfaces of the second hourglass - type electrification part 2. The conductive layer 103 is a conductive coating, a conductive film, or a conductive plate.

[0034] The neck - constricted position of the first hourglass - type electrification part 1 is provided with a first induction part 3, and the neck - constricted position of the second hourglass - type electrification part 2 is provided with a second induction part 5. Both the first induction part 3 and the second induction part 5 are induction coils. The first induction part 3 is connected to the second external conductive part 6, and the second induction part 5 is connected to the first external conductive part 4.

[0035] A conductive connection member 7 with upper and lower symmetry and ends extending into the first hourglass charging part 1 and the second hourglass charging part 2 is provided between the first hourglass charging part 1 and the second hourglass charging part 2. The ends of the conductive connection member 7 are arranged at the edge position of the necking of the hourglass container 101 and are far away from the necking sand falling port 104. When there is conductive sand accumulated at the necking position, the conductive connection member 7 contacts the conductive sand 102, and the falling sand flowing out from the necking sand falling port does not contact the conductive connection member 7.

[0036] The hourglass electrostatic charging device further includes an electrostatic charging display component.

[0037] The electrostatic charging display component includes a metal foil 8, and the metal foil 8 is connected to the first outer conductive part 4 and / or the second outer conductive part 6. The metal foil 8 is one piece or multiple pieces, and the metal foil 8 hangs down naturally when there is no static electricity on the first outer conductive part 4 and the second outer conductive part 6. When there is static electricity on the first outer conductive part 4 and the second outer conductive part 6, the metal foil 8 is in a divergent shape, indicating that static electricity is generated.

[0038] The electrostatic charging display component includes an insulating wire or insulating rope rod 9 connected between the first outer conductive part 4 and the second outer conductive part 6, and a conductive ball or conductive ring 10 is sleeved on the insulating wire or insulating rope rod 9.

[0039] When there is no static electricity on the first outer conductive part 4 and the second outer conductive part 6, the conductive ball or conductive ring 10 hangs down naturally. When there is static electricity on the first outer conductive part 4 and the second outer conductive part 6, the conductive ball or conductive ring 10 will move back and forth between the first outer conductive part 4 and the second outer conductive part 6, indicating that static electricity is generated.

[0040] The electrostatic charging display component includes an insulating annular or linear channel 11, the insulating annular or linear channel 11 penetrates and is fixedly connected between the first outer conductive part 4 and the second outer conductive part 6, and a conductor ball 12 is arranged inside the insulating annular or linear channel 11. The conductor ball 12 can roll freely inside the insulating annular or linear channel 11 and can contact the first outer conductive part 4 and the second outer conductive part 6 inside the insulating annular or linear channel 11. Due to the repulsive force of conductors with the same kind of charge and the attractive force of conductors with different kinds of charge, the conductor ball keeps moving inside the insulating annular channel 11, indicating that static electricity is generated.

[0041] The hourglass electrostatic charging device further includes a base 14, and the base 14 is respectively arranged outside the two bottom surfaces of the first hourglass charging part 1 and the second hourglass charging part 2 to play a protective role.

[0042] The hourglass electrostatic charging device further includes a transparent housing 13, and the transparent housing 13 is arranged outside the first hourglass charging part 1 and the second hourglass charging part 2 to play a protective role.

[0043] Embodiment 1

[0044] As Figure 1 , a sandglass - type electrostatic charging device, includes a first sandglass - type charging part 1 and a second sandglass - type charging part 2. The outside of the first sandglass - type charging part 1 is fixedly connected to the outside of the second sandglass - type charging part 2.

[0045] The first sandglass - type charging part 1 and the second sandglass - type charging part 2 have the same structure, including a sandglass - type container 101, conductive sand 102, and a conductive layer 103. The sandglass - type container 101 is made of glass. The conductive sand 102 is encapsulated in the sandglass - type container 101. The conductive sand 102 is aluminum alloy particles with a particle size less than 0.25 mm. The inner surfaces of the two bottom surfaces of the sandglass - type container 101 are provided with the conductive layer 103. The conductive layer 103 is an aluminum foil conductive film.

[0046] The outside of the first sandglass - type charging part 1 is provided with a first external conductive part 4 that is electrically connected to the inside of the first sandglass - type charging part 1. The outside of the second sandglass - type charging part 2 is provided with a second external conductive part 6 that is electrically connected to the inside of the second sandglass - type charging part 2. The first external conductive part 4 and the second external conductive part 6 are made of aluminum wire. The two ends of the first external conductive part 4 are respectively connected to the conductive layers 103 of the two bottom surfaces of the first sandglass - type charging part 1. The two ends of the second external conductive part 6 are respectively connected to the conductive layers 103 of the two bottom surfaces of the second sandglass - type charging part 2.

[0047] A first induction part 3 is provided at the necking position of the first sandglass - type charging part 1, and a second induction part 5 is provided at the necking position of the second sandglass - type charging part 2. The first induction part 3 and the second induction part 5 are both induction coils. The first induction part 3 is connected to the second external conductive part 6, and the second induction part 5 is connected to the first external conductive part 4. An aluminum - wire conductive connection part 7 with symmetric upper and lower ends extending into the two parts is provided between the first sandglass - type charging part 1 and the second sandglass - type charging part 2.

[0048] The sandglass - type electrostatic charging device further includes an electrostatic charging display component. The electrostatic charging display component includes an aluminum foil 8, and the aluminum foil 8 is respectively connected to the first external conductive part 4 and the second external conductive part 6.

[0049] The sandglass - type electrostatic charging device further includes a base 14, and the base 14 is respectively provided outside the two bottom surfaces of the first sandglass - type charging part 1 and the second sandglass - type charging part 2 for protection.

[0050] Embodiment 2

[0051] As Figure 3 , a sandglass - type electrostatic charging device, includes a first sandglass - type charging part 1 and a second sandglass - type charging part 2. The outside of the first sandglass - type charging part 1 is fixedly connected to the outside of the second sandglass - type charging part 2.

[0052] The structures of the first hourglass electrostatic charging part 1 and the second hourglass electrostatic charging part 2 are the same, including an hourglass container 101, conductive sand 102, and a conductive layer 103. The hourglass container 101 is made of glass. The conductive sand 102 is encapsulated inside the hourglass container 101. The conductive sand 102 is copper particles with a particle size less than 0.25 mm. The inner surfaces of the two bottom surfaces of the hourglass container 101 are provided with a conductive layer 103. The conductive layer 103 is a copper conductive film.

[0053] An external first external conductive part 4 electrically connected to the inside of the first hourglass electrostatic charging part 1 is provided outside the first hourglass electrostatic charging part 1, and an external second external conductive part 6 electrically connected to the inside of the second hourglass electrostatic charging part 2 is provided outside the second hourglass electrostatic charging part 2. The first external conductive part 4 and the second external conductive part 6 are made of copper wires. The two ends of the first external conductive part 4 are respectively connected to the conductive layers 103 on the two bottom surfaces of the first hourglass electrostatic charging part 1. The two ends of the second external conductive part 6 are respectively connected to the conductive layers 103 on the two bottom surfaces of the second hourglass electrostatic charging part 2.

[0054] A first induction part 3 is provided at the necking position of the first hourglass electrostatic charging part 1, and a second induction part 5 is provided at the necking position of the second hourglass electrostatic charging part 2. Both the first induction part 3 and the second induction part 5 are induction coils. The first induction part 3 is connected to the second external conductive part 6, the second induction part 5 is connected to the first external conductive part 4, and a copper wire conductive connection part 7 with symmetric upper and lower ends extending into the two is provided between the first hourglass electrostatic charging part 1 and the second hourglass electrostatic charging part 2.

[0055] The electrostatic charging display component includes an insulating wire 9 connected between the first external conductive part 4 and the second external conductive part 6, and a conductive ball 10 is sleeved on the insulating wire 9.

[0056] The hourglass electrostatic charging device further includes a base 14, and the base 14 is respectively provided outside the two bottom surfaces of the first hourglass electrostatic charging part 1 and the second hourglass electrostatic charging part 2 to play a protective role. A transparent housing 13 is provided between the two bases 14, and the transparent housing 13 is arranged outside the first hourglass electrostatic charging part 1 and the second hourglass electrostatic charging part 2.

[0057] Embodiment 3

[0058] As Figure 4 , an hourglass electrostatic charging device includes a first hourglass electrostatic charging part 1 and a second hourglass electrostatic charging part 2, and the outside of the first hourglass electrostatic charging part 1 is fixedly connected to the outside of the second hourglass electrostatic charging part 2.

[0059] The structures of the first hourglass electrostatic charging part 1 and the second hourglass electrostatic charging part 2 are the same, including an hourglass container 101, conductive sand 102, and a conductive layer 103. The hourglass container 101 is made of plastic. The conductive sand 102 is encapsulated inside the hourglass container 101. The conductive sand 102 is aluminized film glass particles with a particle size less than 0.25 mm. The inner surfaces of the two bottom surfaces of the hourglass container 101 are provided with the conductive layer 103. The conductive layer 103 is a 1-mm aluminum plate.

[0060] An external first external conductive part 4 electrically connected to the inside of the first hourglass electrostatic charging part 1 is provided outside the first hourglass electrostatic charging part 1, and an external second external conductive part 6 electrically connected to the inside of the second hourglass electrostatic charging part 2 is provided outside the second hourglass electrostatic charging part 2. The first external conductive part 4 and the second external conductive part 6 are made of aluminum plates. The two ends of the first external conductive part 4 are respectively connected to the conductive layers 103 on the two bottom surfaces of the first hourglass electrostatic charging part 1. The two ends of the second external conductive part 6 are respectively connected to the conductive layers 103 on the two bottom surfaces of the second hourglass electrostatic charging part 2.

[0061] A first induction part 3 is provided at the necking position of the first hourglass electrostatic charging part 1, and a second induction part 5 is provided at the necking position of the second hourglass electrostatic charging part 2. Both the first induction part 3 and the second induction part 5 are induction coils. The first induction part 3 is connected to the second external conductive part 6, the second induction part 5 is connected to the first external conductive part 4, and a conductive connection part 7 made of an aluminum wire with symmetric upper and lower ends extending into the interiors of the two is provided between the first hourglass electrostatic charging part 1 and the second hourglass electrostatic charging part 2.

[0062] The electrostatic charging display component includes an insulating annular channel 11. The insulating annular channel 11 penetrates and is fixedly connected between the first external conductive part 4 and the second external conductive part 6. Aluminum balls are provided inside the insulating annular channel 11. The aluminum balls can freely roll inside the insulating annular channel 11 and can contact the first external conductive part 4 and the second external conductive part 6 inside the insulating annular channel 11.

[0063] The hourglass electrostatic charging device further includes a base 14. The base 14 is respectively provided outside the two bottom surfaces of the first hourglass electrostatic charging part 1 and the second hourglass electrostatic charging part 2 to play a protective role. A transparent housing 13 is provided between the two bases 14. The transparent housing 13 is arranged outside the first hourglass electrostatic charging part 1 and the second hourglass electrostatic charging part 2.

[0064] Embodiment 4

[0065] Such as Figure 5 , an hourglass electrostatic charging device includes a first hourglass electrostatic charging part 1 and a second hourglass electrostatic charging part 2. The first hourglass electrostatic charging part 1 and the second hourglass electrostatic charging part 2 are fixedly connected to the outside.

[0066] The structures of the first hourglass electrostatic charging part 1 and the second hourglass electrostatic charging part 2 are the same, including an hourglass container 101, conductive sand 102, and a conductive layer 103. The hourglass container 101 is made of plastic. The conductive sand 102 is encapsulated inside the hourglass container 101. The conductive sand 102 is copper-plated glass beads with a particle size less than 0.25 mm. The inner surfaces of the two bottom surfaces of the hourglass container 101 are provided with the conductive layer 103. The conductive layer 103 is an aluminum plate with a thickness of 1 mm.

[0067] An external first external conductive part 4 electrically connected to the inside of the first hourglass electrostatic charging part 1 is provided outside the first hourglass electrostatic charging part 1, and an external second external conductive part 6 electrically connected to the inside of the second hourglass electrostatic charging part 2 is provided outside the second hourglass electrostatic charging part 2. The first external conductive part 4 and the second external conductive part 6 are made of conductive film. The first external conductive part 4 is arranged along the outer contour of the second hourglass electrostatic charging part 2, and both ends of the first external conductive part 4 are respectively connected to the conductive layers 103 of the two bottom surfaces of the first hourglass electrostatic charging part 1. The second external conductive part 6 is arranged along the outer contour of the first hourglass electrostatic charging part 1, and both ends of the second external conductive part 6 are respectively connected to the conductive layers 103 of the two bottom surfaces of the second hourglass electrostatic charging part 2.

[0068] A first induction part 3 is provided at the necking position of the first hourglass electrostatic charging part 1, and a second induction part 5 is provided at the necking position of the second hourglass electrostatic charging part 2. Both the first induction part 3 and the second induction part 5 are induction coils. The first induction part 3 is connected to the second external conductive part 6, the second induction part 5 is connected to the first external conductive part 4, and a conductive connection member 7 made of aluminum wire with symmetric upper and lower ends extending into the two hourglass electrostatic charging parts is provided between the first hourglass electrostatic charging part 1 and the second hourglass electrostatic charging part 2.

[0069] The electrostatic charging display component includes an aluminum foil 8, and the aluminum foil 8 is respectively connected to the first induction part 3 and the second induction part 5.

[0070] The hourglass electrostatic charging device further includes a base 14, and the bases 14 are respectively provided outside the two bottom surfaces of the first hourglass electrostatic charging part 1 and the second hourglass electrostatic charging part 2 to play a protective role. A transparent housing 13 is provided between the two bases 14, and the transparent housing 13 is arranged outside the first hourglass electrostatic charging part 1 and the second hourglass electrostatic charging part 2.

[0071] For those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the protection scope of the claims of the present invention. The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An hourglass - type electrostatic charging device, characterized in that, It includes a first hourglass electrostatic charging part and a second hourglass electrostatic charging part. The outside of the first hourglass electrostatic charging part is fixedly connected to the outside of the second hourglass electrostatic charging part. A first induction part is provided at the necking position of the first hourglass electrostatic charging part. An first external conductive part electrically connected to the inside of the first hourglass electrostatic charging part is provided on the outside of the first hourglass electrostatic charging part. A second induction part is provided at the necking position of the second hourglass electrostatic charging part. A second external conductive part electrically connected to the inside of the second hourglass electrostatic charging part is provided on the outside of the second hourglass electrostatic charging part. The first induction part is connected to the second external conductive part, and the second induction part is connected to the first external conductive part. A conductive connection part with symmetric upper and lower ends extending into the two parts is provided between the first hourglass electrostatic charging part and the second hourglass electrostatic charging part. The hourglass electrostatic charging device further includes an electrostatic charging display component; Both ends of the first external conductive part are respectively connected to the conductive layers on the two bottom surfaces of the first hourglass electrostatic charging part, and both ends of the second external conductive part are respectively connected to the conductive layers on the two bottom surfaces of the second hourglass electrostatic charging part; Both the first induction part and the second induction part are induction coils; It further includes a base, and the base is respectively provided outside the two bottom surfaces of the first hourglass electrostatic charging part and the second hourglass electrostatic charging part.

2. The hourglass - type electrostatic charging device according to claim 1, characterized in that, The structures of the first hourglass electrostatic charging part and the second hourglass electrostatic charging part are the same, and each includes an hourglass container, conductive sand, and a conductive layer. The conductive sand is encapsulated in the hourglass container, and the conductive layer is provided on the inner surfaces of the two bottom surfaces of the hourglass container.

3. The hourglass - type electrostatic charging device according to claim 2, characterized in that, The hourglass container is made of an insulating material, the conductive layer is a conductive coating, a conductive film or a conductive plate, and the conductive sand is solid particles with conductive ability.

4. The hourglass - type electrostatic charging device according to claim 1, characterized in that, The electrostatic charging display component is a metal foil display, which includes a metal foil, and the metal foil is connected to the first external conductive part and / or the second external conductive part.

5. The hourglass - type electrostatic charging device according to claim 1, characterized in that, The electrostatic charging display component is a moving part display, which includes an insulating wire or an insulating rope rod connected between the first external conductive part and the second external conductive part. A conductive ball or a conductive ring is sleeved on the insulating wire or the insulating rope rod, and the conductive ball or the conductive ring can move on the insulating wire or the insulating rope rod and can contact the first external conductive part and the second external conductive part.

6. The hourglass - type electrostatic charging device according to claim 1, characterized in that, The electrostatic charging display component is a channel display, which includes an insulating ring-shaped or straight channel. The insulating ring-shaped or straight channel penetrates and is fixedly connected between the first external conductive part and the second external conductive part. A conductor ball is provided inside the insulating ring-shaped or straight channel, and the conductor ball can freely roll inside the insulating ring-shaped or straight channel and can contact the first external conductive part and the second external conductive part inside the insulating ring-shaped or straight channel.

7. The hourglass - type electrostatic charging device according to claim 1, characterized in that, The hourglass electrostatic charging device further includes a transparent housing, and the transparent housing is arranged outside the first hourglass electrostatic charging part and the second hourglass electrostatic charging part.

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