TWI848843B - High voltage terminal structure and housing having the same - Google Patents

Abstract

The present invention relates to a high-voltage terminal structure, which is used to be arranged in a casing body having a front side and an inner side. The high-voltage terminal structure includes a first insulating member, a second insulating member and a conductive member. The first insulating member is arranged through the casing body and has a through hole. The second insulating member is arranged in the casing body and is spaced apart from the first insulating member; the second insulating member has an inner cylinder, a channel, an outer cylinder and a connecting portion. The inner cylinder has two opposite ends, one of which faces the first insulating member; the channel penetrates and is connected to the two opposite ends of the inner cylinder; the outer cylinder is sleeved in the inner cylinder and is spaced apart; the connecting portion is connected between the inner cylinder and the outer cylinder. The conductive member is fixed to the other end of the inner cylinder away from the first insulating member. Thus, the present invention obtains a longer creeping distance and a longer spatial straight line distance in a limited space.

Description

High voltage terminal structure and housing having the same

The present invention relates to a terminal structure for electrical connection, and in particular to a terminal structure for connecting high voltage electricity.

In the field of electrical safety, there are two safety reference distances between the insulator that the human body contacts and the charged body, depending on the insulating medium. They are the clearance distance and the creepage distance. The straight-line distance in space refers to the distance between the position of the insulator that the human body touches and the position of the charged body that can be insulated by air. When this distance is insufficient, the electricity on the charged body may break down and cause electric shock to the human body. In addition, the creeping distance refers to the shortest distance along the surface of the insulator between the position of the insulator that the human body touches and the charged body. This is because the surface of the insulator around the charged body may be polarized, causing the insulator to be charged. If the human body touches the insulator within this range, there is still a chance of electric shock. In addition, the higher the voltage of the charged body, the longer the straight-line distance in space and the creeping distance must be to prevent the human body from being shocked.

However, the existing high-voltage terminal structure is usually composed of only a slot made of insulating material and a charged body connected to the deep part of the slot. Since the high-voltage terminal structure is small and the space for installation is limited, there is a risk of electric shock when the straight-line distance or creeping distance between the position outside the slot where the human body may touch and the charged body is insufficient. Therefore, it can be seen that the existing high-voltage terminal structure needs to be improved.

The main purpose of the present invention is to provide a high-voltage terminal structure, which can obtain a longer creeping distance and spatial straight line distance between the conductive part and the part in contact with the human body in a limited space, so as to prevent the user from electric shock.

To achieve the above-mentioned purpose, the high-voltage terminal structure proposed in the present invention is used to be arranged in a casing body, the casing body having a front side and an inner side, the front side and the inner side are located at two opposite sides of the casing body; the high-voltage terminal structure includes a first insulating member , which is arranged through the casing body, the first insulating member has: a through hole, which penetrates the opposite sides of the first insulating member, thereby connecting the surface side and the inner side of the casing body; a second insulating member, which is arranged in the casing body and located on the inner side of the casing body, and the second insulating member is spaced from the first insulating member; the second insulating member has: an inner cylinder, which has opposite ends a portion, one of the ends of which faces the first insulating member; a channel which penetrates through and is connected to the two opposite ends of the inner cylinder; an outer cylinder which is sleeved on the inner cylinder and spaced apart from the inner cylinder; a connecting portion which is sealed and connected between the outer circumference of the inner cylinder and the inner circumference of the outer cylinder; and a conductive member which is penetrated and fixed to the other end of the inner cylinder which faces away from the first insulating member.

In addition, to achieve the above-mentioned purpose, the present invention further proposes a casing with a high-voltage terminal structure, which includes: a casing body, which has a front side and an inner side, and the front side and the inner side are located on opposite sides of the casing body; and a high-voltage terminal structure, which includes: a first insulating member, which is penetrated and arranged in the casing body, and the first insulating member has: a through hole, which penetrates the opposite sides of the first insulating member, thereby connecting the front side and the inner side of the casing body; a second insulating member, which is arranged in the casing body and located at the casing body; On the inner side of the body, the second insulating member is spaced apart from the first insulating member; the second insulating member comprises: an inner cylinder having two opposite ends, one of which faces the first insulating member; a passage penetrating and connected to the two opposite ends of the inner cylinder; an outer cylinder sleeved on the inner cylinder and spaced apart from the inner cylinder; a connecting portion sealingly connected between the outer circumference of the inner cylinder and the inner circumference of the outer cylinder; and a conductive member penetrating and fixed to the other end of the inner cylinder facing away from the first insulating member.

Therefore, the advantage of the present invention is that, by means of the second insulating member separated from the first insulating member, the high-voltage terminal structure of the present invention can increase the creeping distance and the spatial straight-line distance between the casing body and the conductive member in a limited space; and by arranging the outer cylinder outside the inner cylinder, the surface area of the second insulating member is increased, and the creeping distance between the conductive member and the casing body is further increased, thereby ensuring that there is a sufficient creeping distance between the conductive member and the human body, and reducing the risk of the human body suffering from high-voltage electric shock.

The high voltage terminal structure as described above further has a fixing ring which surrounds and is connected to the second insulating member, and the fixing ring is connected to the casing body, thereby fixing the second insulating member to the casing body.

As described above, the high voltage terminal structure, wherein the connection portion is located at an end of the outer tube close to the first insulating member.

As described above, the high-voltage terminal structure, wherein the first insulating member also has an inner side surface, which is located on the inner side of the casing body and faces away from the outer side of the casing body; and an end surface of the inner tube facing the end of the first insulating member has a spacing distance from the inner side surface.

As the high voltage terminal structure described above, the channel is formed with an insertion opening on the end surface, and the insertion opening is directly opposite to the through hole of the first insulating member.

The casing with a high-voltage terminal structure as described above further has a connector connected to the side of the casing body facing the inner side. The connector is a plate and has a groove, which is recessed in a direction away from the casing body. The second insulating member of the high-voltage terminal structure is fixed to the connector, and there is a spacing distance between the position where the second insulating member is fixed to the groove and the casing body.

As described above, the housing with a high-voltage terminal structure, wherein the high-voltage terminal structure is disposed through the connector, and the high-voltage terminal structure further has a fixing ring which surrounds and is connected to the second insulating member, and the fixing ring is connected to the connector.

The following is a combination of drawings and preferred embodiments of the present invention to further illustrate the technical means adopted by the present invention to achieve the intended purpose of the invention.

First, please refer to FIG. 1 to FIG. 4 . The present invention provides a housing with a high-voltage terminal structure, which includes a housing body 10 and a high-voltage terminal structure 20 . The high-voltage terminal structure 20 is used for a user to insert a connector.

The case body 10 has a front side 11 and an inner side 12, and the front side 11 and the inner side 12 are respectively located on opposite sides of the case body 10; the present invention may further include a connecting member 13, which is connected to a side of the case body 10 facing the inner side 12. Specifically, the connecting member 13 is a plate and has a groove 131, and the groove 131 is recessed in a direction away from the case body 10, and an opening 132 is formed at the bottom of the groove 131, so that there is a spacing distance between the opening 132 and a side of the case body 10 facing the inner side 12, but it is not limited thereto. In other embodiments, the case body 10 may not include the connecting member 13.

Next, please refer to FIG. 2, FIG. 3, and FIG. 5 to FIG. 7. The high-voltage terminal structure 20 is disposed on the housing body 10, and includes a first insulating member 21, a second insulating member 22, a fixing ring 23, and a conductive member 24. The first insulating member 21 and the second insulating member 22 are preferably made of a material with a Comparative Tracking Index (CTI) 600V specification, but the present invention is not limited thereto.

The first insulating member 21 is disposed through the casing body 10, and has an outer surface 211 and an inner surface 212 on two opposite sides thereof, and the outer surface 211 and the inner surface 212 face opposite directions respectively; wherein the outer surface 211 is located at the surface 11 of the casing body 10, and the inner surface 212 is located at the inner side 12 of the casing body 10; specifically, the outer surface 211 faces a direction away from the inner side 12, and the inner surface 212 faces a direction away from the surface 11. A through hole 213 is formed through the outer side 211 and the inner side 212 of the first insulating member 21 , whereby the through hole 213 is connected to the front side 11 and the back side 12 of the housing body 10 .

In addition, as shown in FIG. 2 and FIG. 7 , in this embodiment, the first insulating member 21 can also have a fixing portion 214, which is connected to the outer side surface 211, thereby fixing the relative position between the user's connector and the first insulating member 21; specifically, the fixing portion 214 is formed protruding from the outer side surface 211 and has an inner thread, thereby being able to be screwed with the user's connector. However, this is not limited to this, for example, the fixing portion 214 may not have a thread, but may have a snap-fitting groove, or the first insulating member 21 may not have a fixing portion 214.

Next, please refer to FIG. 1, FIG. 3, and FIG. 4. The second insulating member 22 is disposed on the housing body 10 and is located on the inner side 12 of the housing body 10. In this embodiment, the second insulating member 22 is fixed to the connecting member 13 of the housing body 10 and is inserted through the opening 132 of the connecting member 13, but the present invention is not limited thereto. As shown in FIG. 4, the second insulating member 22 is spaced from the first insulating member 21. In other words, the second insulating member 22 and the first insulating member 21 are not in direct contact with each other.

Next, please refer to Figures 5 to 8. The second insulating member 22 has an inner tube 221, a channel 222, an outer tube 223, and a connecting portion 224. The inner tube 221 has two opposite ends, one of which faces the first insulating member 21, and the other faces away from the first insulating member 21. The end of the inner tube 221 facing the first insulating member 21 has an end surface, and there is a spacing distance between the end surface and the inner side surface 212 of the first insulating member 21. In this embodiment, the spacing distance is preferably 1 mm, but not limited thereto; in other embodiments, the spacing distance may not be equal to 1 mm. The channel 222 passes through and is connected to the opposite ends of the inner tube 221, and an insertion port 2211 is formed on the end surface of the inner tube 221 facing the first insulating member 21. The insertion port 2211 is opposite to the through hole 213 of the first insulating member 21, thereby facilitating the user to insert the connector.

The outer cylinder 223 is sleeved on the inner cylinder 221 and is spaced apart from the inner cylinder 221. Specifically, the connecting portion 224 is sealed and connected between the outer circumference of the inner cylinder 221 and the inner circumference of the outer cylinder 223, close to one end of the first insulating member 21, so that there is a spacing distance between the inner circumference of the outer cylinder 223 and the outer circumference of the inner cylinder 221. In other words, the outer cylinder 223 extends in a direction away from the first insulating member 21 relative to the connecting portion 224, and there is a spacing between the extended portion of the outer cylinder 223 and the inner cylinder 221 without contacting each other.

The fixing ring 23 surrounds and is connected to the second insulating member 22, and is connected to the housing body 10. In this embodiment, the second insulating member 22 is inserted through the opening 132 of the connecting member 13, and the fixing ring 23 is fixed around the opening 132 of the connecting member 13, so that the second insulating member 22 can be fixed to the housing body 10. In this embodiment, because the first insulating member 21 is provided on the housing body 10, and the second insulating member 22 is provided on the connecting member 13, a spacing distance is provided between the opening 132 of the connecting member 13 and a surface of the housing body 10 facing the inner side 12, so that the first insulating member 21 and the second insulating member 22 will not directly contact each other.

The conductive member 24 is fixed to the end of the inner tube 221 away from the first insulating member 21, so that when the user inserts the connector, the connector can contact the conductive member 24.

The high-voltage terminal structure 20 of the present invention ensures that the conductive member 24 has a sufficient creeping distance from the human body by setting the first insulating member 21 and the second insulating member 22 at a distance, thereby reducing the risk of electric shock. In addition, the second insulating member 22 is sleeved on the inner cylinder 221 by the outer cylinder 223, and the outer cylinder 223 is extended away from the first insulating member 21, so that the creeping distance of the conductive member 24 from the surface of the second insulating member 22 to the connecting member 13 can be further increased; and, by the outer cylinder 223 being sleeved on the inner cylinder 221, the creeping distance between the conductive member 24 and the connecting member 13 can be increased in a limited space without occupying too much space on the inner side 12 of the housing body 10.

10: Housing body 11: Surface 12: Inner side 13: Connector 131: Groove 132: Opening 20: High voltage terminal structure 21: First insulating member 211: Outer surface 212: Inner surface 213: Perforation 214: Fixing part 22: Second insulating member 221: Inner cylinder 2211: Insertion port 222: Channel 223: Outer cylinder 224: Connector 23: Fixing ring 24: Conductive member

Figure 1 is a schematic diagram of the appearance of the present invention from the inner side of the casing body. Figure 2 is a schematic diagram of the appearance of the present invention from the outer side of the casing body. Figure 3 is a schematic diagram of the decomposition of the casing with a high-voltage terminal structure of the present invention. Figure 4 is a schematic diagram of the side section of the casing with a high-voltage terminal structure of the present invention. Figure 5 is a schematic diagram of the appearance of the high-voltage terminal structure of the present invention. Figure 6 is a schematic diagram of the decomposition of the high-voltage terminal structure of the present invention. Figure 7 is a schematic diagram of the decomposition of the high-voltage terminal structure of the present invention from another perspective. Figure 8 is a schematic diagram of the side section of the high-voltage terminal structure of the present invention.

10: Chassis body

13: Connectors

20: High voltage terminal structure

21: First insulation component

22: Second insulation component

24: Conductive parts

Claims (8)

A high-voltage terminal structure is provided for being arranged on a casing body, the casing body having a front side and an inner side, the front side and the inner side being located on opposite sides of the casing body; the high-voltage terminal structure comprises: A first insulating member, which is arranged through the casing body, the first insulating member having: A through hole, which penetrates two opposite side surfaces of the first insulating member, thereby connecting the front side and the inner side of the casing body; A second insulating member is disposed in the casing body and is located on the inner side of the casing body, and is spaced apart from the first insulating member; the second insulating member comprises: an inner cylinder having two opposite ends, one of which faces the first insulating member; a channel penetrating and connecting the two opposite ends of the inner cylinder; an outer cylinder sleeved on the inner cylinder and spaced apart from the inner cylinder; and a connecting portion sealedly connected between the outer circumference of the inner cylinder and the inner circumference of the outer cylinder; and a conductive member penetrating and fixed to the other end of the inner cylinder facing away from the first insulating member. The high voltage terminal structure as described in claim 1 further comprises: A fixing ring which surrounds and is connected to the second insulating member, and the fixing ring is connected to the housing body, whereby the second insulating member is fixed to the housing body. A high voltage terminal structure as described in claim 1 or 2, wherein: The connection portion is at an end of the outer tube close to the first insulating member. A high voltage terminal structure as described in claim 1 or 2, wherein: The first insulating member also has an inner side surface, which is located on the inner side of the housing body and faces away from the outer side of the housing body; and An end surface of the inner tube facing the end of the first insulating member has a spacing distance from the inner side surface. A high voltage terminal structure as described in claim 4, wherein: The channel is formed with an insertion opening on the end surface, and the insertion opening is opposite to the through hole of the first insulating member. A casing with a high-voltage terminal structure, comprising: A casing body, which has a front side and an inner side, the front side and the inner side are located on opposite sides of the casing body; and A high-voltage terminal structure, which comprises: A first insulating member, which is arranged through the casing body, and the first insulating member has: A through hole, which penetrates the opposite sides of the first insulating member, thereby connecting the front side and the inner side of the casing body; A second insulating member is disposed in the casing body and is located on the inner side of the casing body, and is spaced apart from the first insulating member; the second insulating member comprises: an inner cylinder having two opposite ends, one of which faces the first insulating member; a channel penetrating and connecting the two opposite ends of the inner cylinder; an outer cylinder sleeved on the inner cylinder and spaced apart from the inner cylinder; and a connecting portion sealedly connected between the outer circumference of the inner cylinder and the inner circumference of the outer cylinder; and a conductive member penetrating and fixed to the other end of the inner cylinder facing away from the first insulating member. The casing with a high-voltage terminal structure as described in claim 6 further has: A connector connected to the side of the casing body facing the inner side, the connector is a plate and has a groove, the groove is recessed in a direction away from the casing body; the second insulating member of the high-voltage terminal structure is fixed to the connector, and the portion of the second insulating member located in the groove has a spacing distance from the casing body. A housing with a high-voltage terminal structure as described in claim 7, wherein the high-voltage terminal structure is disposed through the connector, and the high-voltage terminal structure further comprises: a fixing ring which surrounds and is connected to the second insulating member, and the fixing ring is connected to the connector.

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