Electric fence posts

Abstract

This invention provides an electric fence post that prevents electrical leakage even during rainfall when using stainless steel clip-type wire support devices to support electric fence wires. [Solution] An electric fence post having a water film blocking member that blocks the water film formed on the surface of the post during rainfall between the electric wire support portion of the post and the contact portion of the post with the ground, wherein the water film blocking member is cylindrical, the water film blocking member is attached to the post member such that the post member fits into the cylinder of the water film blocking member, the inner surface of the cylindrical water film blocking member does not contact the surface of the post, and a space is provided between the inner surface of the cylindrical water film blocking member and the surface of the post.

Description

Technical Field

[0001] The present invention relates to a support for an electric fence that protects crops cultivated in a field from damage by wild boars, deer, etc.

Background Art

[0002] In order to prevent crops cultivated in a field from being damaged by wild boars, deer, monkeys, etc., electric fences are widely used. An electric fence is a device in which electric wires are installed so as to surround a field, electricity is passed through the electric wires, and when an animal such as a wild boar tries to enter the field and touches the electric wires, the animal gets an electric shock. Once an animal gets an electric shock, it learns and remembers the pain and fear, and will not approach the electric fence thereafter.

[0003] An electric fence is composed of electric wires, a number of supports that support the electric wires at a certain height, fixtures that fix the electric wires to the supports, a power supply device that supplies electricity to the electric wires, and a ground connection from the power supply device to the ground. When an animal touches the electric wires, electricity flows through the animal's body to reach the ground and returns to the power supply device through the ground and the earth connection to energize the circuit.

[0004] For an electric fence to be effective, the electric wires and the ground need to be insulated. If weeds grow thickly and come into contact with the electric wires, electricity will leak through the weeds, and the effect of the electric fence will be significantly reduced. Therefore, in order to maintain the effect of the electric fence, it is necessary to remove the weeds near the electric wires to prevent electricity leakage.

[0005] As described above, in order to maintain the effect of the electric fence, it is essential to prevent electricity leakage, so insulating supports are used (Non-Patent Document 1). Various fixtures for supporting electric wires on supports have been proposed (Patent Documents 1, 2, and 3). These have the function of an insulator and there is no risk of electricity leakage from the electric wires to the ground even during rainfall, but they have the drawbacks of being somewhat complicated to attach to the supports and having a somewhat complicated structure, so they are expensive. In the case of an electric fence surrounding a small area of farmland, the burden is small even when using such a type of electric wire support fixture, but when installing an electric fence with a total length of 1 km or more, the cost and labor burden are very large. Clip-type support devices are available that are inexpensive, easy to attach to support posts, and allow for simple fixing of electrical wires (Patent Documents 4, 5, 6; Non-Patent Documents 2, 3, 4). These inexpensive clip-type devices are called hook insulators or hook gas insulators, and are made of stainless steel and are conductive (Non-Patent Documents 2, 3, 4). Therefore, they cannot be used on resin-coated steel pipe support posts due to the risk of electrical leakage, and should only be used on non-conductive support posts.

[0006] As mentioned above, clip-type stainless steel wire supports can be easily attached to posts, and securing the wires is simple and inexpensive. Therefore, when installing long electric fences, the burden of installation labor and cost is light, and they are widely used. However, when the surface of the post gets completely wet during rainfall, the electricity from the wires can flow from the stainless steel wire supports through the water film on the post surface to the ground, causing a short circuit. As a result, the effectiveness of the electric fence is significantly reduced. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 08-249962 [Patent Document 2] Japanese Patent Publication No. 2011-3411 [Patent Document 3] Japanese Patent Publication No. 2011-113698 [Patent Document 4] Actual registration 3180547 [Patent Document 5] Japanese Patent Publication No. 09-201140 [Patent Document 6] Ito1298271 [Non-patent literature]

[0008] [Non-Patent Document 1] 2. Parts used for electric fences, see Bird and Animal Damage Control.com, https: / / www.choujuhigai.com / c / electric-fence-lp / electric-fence-lp03 [Non-Patent Document 2] Hook insulator, https: / / apollo-area.jp / area-system-large / [Non-Patent Document 3] Hook Insulators, https: / / www.getter.co.jp / product_info17.html [Non-Patent Document 4] Clips, everything you need for electric fence installation, easy electric fence installation methods and helpful tips, https: / / www.kyowatecno.jp / electric_fence / [Overview of the project] [Problems that the invention aims to solve]

[0009] The problem that the present invention aims to solve is to provide an electric fence post that prevents electrical leakage even during rainfall when supporting electric wires using stainless steel clip-type wire support devices on the electric fence post. [Means for solving the problem]

[0010] After careful consideration, the inventors of this invention realized that by blocking the water film that covers the entire surface of the support column during rainfall (hereinafter referred to as the water film) at a point midway between the lowest wire support and the contact point of the support column with the ground, it would be possible to prevent electric leakage from the wires to the ground through the water film on the surface of the support column. Furthermore, they conceived the idea that by attaching a cylinder with an inner diameter slightly larger than the outer diameter of the support column below the lowest wire support, and creating a space between the surface of the support column and the inner surface of the cylinder at this point, it would be possible to block the water film on the surface of the support column above the cylinder attachment point and the water film on the surface of the support column below the cylinder attachment point.

[0011] The cylinder described above is called a water film blocking member. The post described above is called a post member. In other words, the electric fence post according to the present invention has a post member and a water film blocking member. The distance between the inner surface of the water film blocking member and the surface of the post member facing it is preferably about 3 mm to 1 cm. The length of the water film blocking member is appropriately 5 cm to 10 cm.

[0012] The water film blocking member can be fixed to the support member by providing a fixing member that connects the inner surface of the water film blocking member to the surface of the support member, and by adhering the fixing member to the inner surfaces of the support member and the water film blocking member. Alternatively, as another example of a fixing method, a ring-shaped fixing member can be used. The inner diameter of the ring of the fixing member is equal to the outer diameter of the support member, and the outer diameter of the ring is equal to the inner diameter of the water film blocking member. The support member is then fitted inside the ring of the fixing member, and the ring portion is further fitted inside the cylinder of the water film blocking member, thereby fixing the support member and the water film blocking member via the fixing member. The fixing member may be adhering and fixed to the support member and the water film blocking member with an adhesive, but an elastic material such as rubber can be used as the material for the fixing member, and the fixing member can be fixed to the support member and the water film blocking member by the frictional force between the fixing member and the support member and the water film blocking member. In this case, the user can separate the support column, the water film shielding member, and the fixing member, and the height at which the water film shielding member is attached can be adjusted to match the support height of the lowest level of electric wire.

[0013] The electric fence post according to the first invention comprises a post member and a water film blocking member that blocks the water film formed on the surface of the post member during rainfall between the electric wire support portion of the post member and the contact portion of the post member with the ground, wherein the water film blocking member is attached midway between the electric wire support portion of the post member and the contact portion of the post member with the ground.

[0014] The pillar for an electric fence according to the second invention is the pillar for an electric fence according to the first invention, wherein the water film blocking member is cylindrical, and the water film blocking member is attached to the pillar member such that the pillar member fits into the cylinder of the water film blocking member. The inner surface of the cylindrical water film blocking member does not contact the surface of the pillar member, and a space is provided between the inner surface of the cylindrical water film blocking member and the surface of the pillar member. The water film blocking member is attached to the pillar member via a fixing member, the fixing member is annular, the inner diameter of the ring is equal to the outer diameter of the cross-section of the pillar member, and the outer diameter of the ring is equal to the inner diameter of the water film blocking member. The pillar member is fitted inside the ring of the fixing member, and further, the ring portion is fitted inside the cylinder of the water film blocking member, whereby the pillar member and the water film blocking member are fixed via the fixing material. The fixing member is provided at only one location in the middle between the upper end and the lower end of the water film blocking member, or at a total of two locations, one at the upper end portion of the water film blocking member and one at the middle thereof.

Advantages of the Invention

[0015] When the pillar for an electric fence according to the present invention supports an electric wire using a stainless steel clip-type wire support on the pillar of the electric fence, no electric leakage occurs even during rainfall.

Brief Description of the Drawings

[0016] [Figure 1] It is a front view of the pillar for an electric fence according to Embodiment 1 of the present application. [Figure 2] It is a plan view of the pillar for an electric fence according to Embodiment 1 of the present application. [Figure 3] It is a cross-sectional view of the pillar for an electric fence according to Embodiment 1 of the present application. [Figure 4] It is a view showing a state in which a stainless steel clip-type wire support is attached to the pillar for an electric fence according to Embodiment 1 of the present application. [Figure 5] It is a view showing a state in which an electric wire is supported using the pillar for an electric fence according to Embodiment 1 of the present application. [Figure 6] It is a front view of the pillar for an electric fence according to Embodiment 2 of the present application. [Figure 7]This is a cross-sectional view of an electric fence post according to Embodiment 2 of the present application. [Modes for carrying out the invention]

[0017] Next, embodiments of the present invention will be described, but it goes without saying that various changes and modifications are possible without departing from the technical scope of the present invention. [Examples]

[0018] Figure 1 shows a front view of an embodiment of an electric fence post according to the present invention. The electric fence post 1 has a water film blocking member 3 in the middle of the post member 2. Figure 2 is a plan view of the electric fence post 1. The water film blocking member 3 is fixed to the post member 2 via a fixing member 4. The fixing member 4 is ring-shaped, and the inner diameter of the ring is equal to the outer diameter of the cross-section of the post member 2, and the outer diameter of the ring is equal to the inner diameter of the water film blocking member 3. The post member 2 and the water film blocking member 3 are fixed via the fixing member 4 by fitting the post member 2 inside the ring of the fixing member 4, and further fitting the ring portion inside the cylinder of the water film blocking member 3.

[0019] The support post member 2 is made of a non-conductive material. Figure 3 is a longitudinal cross-sectional view of the electric fence support post. The water film blocking member 3 is fixed to the support post member 2 via a fixing member 4. During rainfall, the water film that forms on the surface of the support post member 1 above the mounting position of the water film blocking member is blocked from the water film that forms on the outer surface of the water film blocking member because there is a space between the support post surface and the inner surface of the water film blocking member, and electricity does not flow from the support post member 1 above the mounting position of the water film blocking member to the water film blocking member.

[0020] Furthermore, even if heavy rainfall causes water to accumulate above the fixing member 4 inside the water film barrier member 3, and the water level reaches the top of the water film barrier member, and the water film generated on the surface of the support member 1 above the mounting position of the water film barrier member and the water film generated on the outer surface of the water film barrier member become energized, the water film on the outer surface of the water film barrier member and the water film on the surface of the support member 2 below the mounting position of the water film barrier part are blocked because there is a space between the support surface and the inner surface of the water film barrier member, and electricity does not flow from the water film barrier member to the part of the support member below the mounting position of the water film barrier part. Therefore, when using the electric fence support post according to this embodiment and supporting the electric wire with a stainless steel clip-type electric wire support, electricity will not leak to the ground during rainfall.

[0021] Figure 4 shows an electric fence post according to this embodiment with a stainless steel clip-type wire support attached. The water film blocking member 3 is attached below the mounting position of the stainless steel clip-type wire support 5 that supports the lowest wire of the electric fence post 1.

[0022] Figure 5 shows an embodiment of supporting electric fence wires using an electric fence post according to this example. The electric fence post 1 has a water film blocking member 3 below the position where the stainless steel clip-type wire support 5 that supports the lowest wire 6 is attached, and above the part of the post 1 that contacts the ground 7. [Examples]

[0023] Figure 6 shows a front view of another embodiment of the electric fence post according to the present invention. The difference between the electric fence post 1 according to this embodiment and the electric fence post 1 according to Embodiment 1 is that it has two fixing members 4 for fixing the water film blocking member 3 to the post member 2. One of the fixing members 4 is attached to the top of the water film blocking member 3 so as to seal the upper cylindrical end of the water film blocking member. Figure 7 shows a cross-sectional view of the electric fence post according to this embodiment. The post member 2 and the water film blocking member 3 are fixed to the post member 2 via a fixing member 4 attached to the top of the water film blocking member 3 so as to seal the upper cylindrical end of the water film blocking member, and a fixing member 4 attached midway between the upper and lower ends of the cylinder of the water film blocking member.

[0024] During rainfall, the water film generated on the surface of the support member 1 above the mounting position of the water film shielding member connects with the water film generated on the surface of the upper fixing member 4, and further connects with the water film generated on the outer surface of the water film shielding member. However, the water film on the outer surface of the water film shielding member and the water film on the surface of the support member 2 below the mounting position of the water film shielding part are blocked because there is a space between the support surface and the inner surface of the water film shielding member. Therefore, electricity does not flow from the water film shielding member to the part of the support member below the mounting position of the water film shielding part. For this reason, when using the electric fence support post according to this embodiment and supporting the electric wire with a stainless steel clip-type electric wire support, electricity will not leak to the ground during rainfall. [Industrial applicability]

[0025] By using the electric fence posts according to the present invention, an electric fence can be installed that is free from the risk of electrical leakage even during rainfall, using a stainless steel clip-type wire support that is inexpensive and easy to attach to the posts and secure the wires. [Explanation of symbols]

[0026] 1. Post for electric fence 2. Support members 3. Water film barrier member 4 Fixing members 5. Stainless steel clip-type wire support 6 electric wire 7 ground

Claims

1. Support member and It has a water film blocking member that blocks the water film that forms on the surface of the support member during rainfall between the wire support portion of the support member and the contact portion of the support member with the ground. The water film blocking member is installed between the wire support portion of the support member and the portion of the support member that contacts the ground. A support post for an electric fence, characterized by the following features.

2. A support post for an electric fence according to claim 1, The water film blocking member described above is cylindrical, The water film blocking member is attached to the support member such that the support member fits into the cylinder of the water film blocking member. The inner surface of the cylindrical water film blocking member is not in contact with the surface of the support member, and a space is provided between the inner surface of the cylindrical water film blocking member and the surface of the support member. The water film blocking member is attached to the support member via a fixing member, The fixing member is ring-shaped, the inner diameter of the ring is equal to the outer diameter of the cross-section of the support member, the outer diameter of the ring is equal to the inner diameter of the water film blocking member, the support member and the water film blocking member are fixed together via the fixing member by fitting the support member inside the ring of the fixing member and further fitting the ring portion inside the cylinder of the water film blocking member. The fixing member is provided at only one location midway between the upper and lower ends of the water film blocking member, or at a total of two locations: one at the upper end of the water film blocking member and one midway between the upper and lower ends. A support post for an electric fence, characterized by the following features.

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