CN116130983B - Grounding device for shielding wire of electrical equipment - Google Patents

Abstract

The invention discloses a grounding device for a shielding wire of electrical equipment, which comprises an electrical wire, an electrical inserting terminal and a grounding terminal, wherein an inner protective cover, the shielding wire and an outer protective cover are sequentially arranged outside the electrical wire from inside to outside; by arranging the insulating protection block, after the electric wire is connected, the electric terminal, the grounding port, the electric port and other parts are completely protected in the insulating protection block and the electric equipment, so that the exposed damage is avoided; the integrated combined control mechanism is arranged, so that the electric equipment is powered on after the shielding wire is grounded, and the shielding wire is disconnected and grounded after the electric wire is powered off, thereby preventing electromagnetic wave interference.

Description

A grounding device for shielded wires of electrical equipment

technical field

The invention belongs to the technical field of conductive connection, and in particular relates to a grounding device for shielding wires of electrical equipment.

Background technique

With the trend of digitalization and miniaturization of electronic and communication equipment, the resistance to external electromagnetic waves is weakened. Therefore, in order to protect various electronic and communication equipment from electromagnetic wave interference, or to prevent the interference of peripheral equipment according to the electromagnetic wave generated by the electromagnetic wave source, the solution The harmfulness of electromagnetic waves to the human body requires that the inside and outside of the electronic and communication equipment or the lead wires must have a grounding shielding device.

After searching the information and searching, in the prior art, there are shielding wire grounding devices similar to the following, prior art 1: As shown in Figure 1, it includes the electrical wire (a) and the inner sheath (b) wrapped on the outer side of the electrical wire ), the shielded wire (c) and the outer sheath (d), the electric wire (a) and the shielded wire (c) are exposed at one end, and the plug-in terminal (e) is connected to the bare end of the electric wire (a) to The equipment is connected to the plug-in port (f) on the electrical equipment (k), and the bare end of the shielded wire (a) is connected to the ground terminal (g) for connection to the ground terminal (h) on the electrical equipment (k).

Prior Art 2: The shielding wire grounding device for electrical equipment as shown in Chinese Patent Publication No. CN107579360B, including electrical wires and inner sheaths wrapped on the outside of the electrical wires, shielding wires and outer sheaths, electrical wires and shielding The wires are all exposed at one end; the insulating part completely covers the exposed part of the electric wire; the ground terminal covers the shielded wire and the insulating part, is electrically connected with the shielded wire and is grounded to the casing of the electrical equipment and an electrical plug terminal connected to one end of the electric wire, and a part of the electrical plug terminal is covered by the insulating member.

However, the current shielding wire grounding device in the prior art has the following defects: 1. The grounding terminal and the plug-in terminal are completely separated (prior art 1) or partially separated (prior art 2), so that the plug-in terminal and the ground terminal cannot be connected at the same time. When plugging and unplugging, only the plug-in terminal is connected to conduct electricity, but the grounding terminal is not grounded, resulting in shielding failure; 2. The grounding terminal and the plug-in terminal are completely separated (prior art 1) or partially separated (prior art 2) During operation, it is easy to connect the plug-in terminal first and then connect the ground terminal or disconnect the ground terminal first and then disconnect the plug-in terminal, so that there is an interval state where the electrical equipment is powered on but the shielding wire is still not grounded, even if the interval The time is short, but it still causes a certain amount of electromagnetic interference; 3. The plug-in port is set inside the device casing (the second prior art), and when connecting or removing the plug-in port, the device casing needs to be disassembled, which is very Trouble and inconvenience; 4. In normal use, the grounding terminal is directly exposed outside the equipment casing, which is easy to cause damage; 5. When the grounding terminal is not plugged into the grounding port on the electrical equipment, the grounding terminal and the shielding wire are still conducting , If the ground terminal is connected to the power supply by mistake, it is easy to cause overload current to pass through the shielded wire (the shielded wire is generally a weak current wire) and cause damage to the shielded wire.

Contents of the invention

In view of the deficiencies and defects in the prior art, the object of the present invention is to provide a grounding device for shielded wires of electrical equipment, which solves the following problems existing in the grounding device for shielded wires of electrical equipment in the prior art: 1. Grounding terminals It is completely separated from the plug-in terminal (prior art 1) or partly separated (prior art 2), so that the plug-in terminal and the ground terminal cannot be plugged in at the same time, and only the plug-in terminal is connected to conduct electricity, but the ground terminal is not connected. In the case of grounding, the shielding will fail; 2. The grounding terminal and the plug-in terminal are completely separated (prior art 1) or partially separated (prior art 2). During operation, it is easy to connect the plug-in terminal first and then connect the ground terminal or When the grounding terminal is disconnected and the plug-in terminal is disconnected, there is an interval state where the electrical equipment is energized, but the shielding wire is still not grounded. Even if the interval is short, it still causes a certain problem of electromagnetic interference; 3. Plug-in The electrical port is set inside the device casing (the second prior art). When connecting or removing the plug-in port, the device casing needs to be disassembled, which is very troublesome and inconvenient; 4. In normal use, the grounding terminal is directly exposed to the 5. When the grounding terminal is not plugged into the grounding port on the electrical equipment, the grounding terminal and the shielding wire are still conducting. If the grounding terminal is connected to the power supply by mistake, it is easy to make the shielding wire (shielding wire) Generally, the shielding wire is damaged due to the overload current passing through the weak current wire.

In order to solve the above technical problems, the present invention adopts the following technical solutions: a grounding device for shielded wires of electrical equipment, which is connected to electrical equipment, including electrical wires, plug-in terminals and grounding terminals, and an inner layer is arranged on the outside of the electrical wires from the inside to the outside. Sheath, shielded wire and outer sheath, the electrical equipment is equipped with a plug-in port that matches the plug-in terminal and a ground port that matches the ground terminal, and the end of the inner sheath is at a certain distance from the electric wire so that the electric wire The end part is exposed, and one end of the plug-in terminal is fixed by injection molding the insulating protective block outside the outer sheath of the electric wire and the exposed part of the electric wire end, and the other end of the plug-in terminal exposes the insulating protective block and the plug-in terminal. The electrical port is matched, and the outer sheath in the insulating protective block is provided with a ring-shaped gap that exposes the shielded wire. The insulating protective block is provided with a horizontal channel on the left side communicating with the outside world on the upper outer side of the outer sheath. The two ends are respectively connected with the horizontal channel and the vertical channel of the annular gap, and the ground terminal can be connected or disconnected with the shielding wire exposed at the circular gap through the integrated joint control mechanism in the horizontal channel and the vertical channel, And when inserting the plug-in terminal to power on the electric wire or pulling out the plug-in terminal to power off the electric wire, the comprehensive joint control mechanism makes the shielded wire ground before the electric wire is connected to the electric conduction, and then grounded after the electric wire is de-energized disconnected, and after pulling out the plug-in terminal and the power-connecting terminal, the grounding terminal and the shielding wire are automatically disconnected.

As a further improvement of the present invention, the electrical equipment is provided with a socket, and the insulating protective block is provided with a plug matching the socket.

As a further improvement of the present invention, the integrated joint control mechanism includes a horizontal bar made of conductive material that is slidably connected to the horizontal channel and a vertical bar made of conductive material that is slidably connected to the vertical channel. One end of the horizontal bar is connected to the The ground terminal is connected, and two fixed blocks are arranged on the circumferential surface of the other end, and the fixed block is connected with the right side wall of the horizontal channel through the first spring made of insulating material, and the right end surface of the horizontal bar is set on the upper end wall of the vertical bar. In order to match the slope inclined from top to bottom to the left, the lower end of the vertical rod is connected with a conductive voltage piece that can be pressed on the shielding wire through a second spring made of conductive material; and between the first spring and the In the natural state of the second spring, the slope of the horizontal bar and the vertical bar are at the same height but not in contact with each other. When the insulating protection block is inserted, the horizontal distance between the plug-in terminal and the plug-in port is greater than the ground The sum of the horizontal distance between the terminal and the grounding socket and the horizontal distance between the end slopes of the horizontal bar and the vertical bar.

As a further improvement of the present invention, the electrical equipment is provided with a groove matching the insulating protective block, and the plug-in port and the grounding port are arranged in the groove.

As a further improvement of the present invention, both the first spring and the second spring are compression springs, and the maximum elastic deformation of the first spring is greater than the horizontal distance between the end slopes of the horizontal bar and the vertical bar.

As a further improvement of the present invention, the conductive voltage sheet is arc-shaped to match the shielded wire.

As a further improvement of the present invention, the bottom of the annular notch is provided with a second sheath that does not interfere with the conductive voltage sheet.

As a further improvement of the present invention, a horizontal slider is provided on the upper and lower sides of the horizontal bar, and a horizontal chute slidingly matched with the horizontal slider is provided on the upper and lower sides of the horizontal channel. The one that can slide along the horizontal chute is embedded in the horizontal chute.

As a further improvement of the present invention, a vertical slider is provided on the left and right sides of the vertical rod, and a vertical chute slidingly matched with the vertical slider is provided on the upper and lower sides of the vertical channel. The one that can slide along the vertical chute is embedded in the vertical chute.

As a further improvement of the present invention, the front and rear sides of the horizontal channel are respectively provided with fixed slide grooves to avoid interference with the fixed block.

Compared with the prior art, the present invention has the following advantages:

1. By placing the end of the inner layer of sheath at a certain distance from the end of the electric wire, it is convenient for the electric wire to be partially exposed, so as to facilitate the fixing of the plug-in terminal. After the power is completed (that is, after the plug-in terminal is inserted into the plug-in port), the plug-in terminal, ground terminal, ground port, plug-in port and other components are completely protected in the insulating protective block and electrical equipment to avoid exposure, and the insulating protective block This kind of setting, one is to improve safety and reduce safety accidents, the other is to reduce or avoid the wear and tear caused by the external exposure of the plug-in terminal and the ground terminal in the prior art, and the third is to fix the connection between the electric wire and the plug-in terminal; It is to make the connection of the plug-in terminal and the power-connecting terminal form a whole, to realize the plug-in and pull-out of the power-connecting terminal and the power-connecting terminal at the same time; to avoid the occurrence of forgetting to connect the grounding terminal;

By providing an annular gap on the outer sheath in the insulating protective block, it is convenient to expose part of the shielding wire so as to be connected to the grounding terminal;

In addition, a horizontal channel and a vertical channel are set up outside the outer sheath inside the insulation protection block, and the grounding terminal can be connected or disconnected with the shielding wire exposed at the annular gap through the integrated joint control mechanism in the horizontal channel and the vertical channel. When the plug-in terminal is inserted to power on the electric wire or the plug-in terminal is pulled out to power off the electric wire, the integrated joint control mechanism makes the shielded wire grounded before the electric wire is connected, and after the electric wire is de-energized Then the grounding is disconnected, and after the plug-in terminal and the power-connecting terminal are pulled out, the grounding terminal and the shielding wire are automatically disconnected, that is, the integrated joint control structure can make the electrical equipment first shield the wire and then the electric wire to be energized. The shielded wire is disconnected from the ground after the power is off, that is, whether it is during the normal power-on use of electrical equipment, or when inserting the plug-in terminal to power on or pulling out the plug-in terminal to power-off the momentary action, it can be guaranteed When the electric wire is energized, the shielded wire is completely grounded, which greatly ensures the shielding effect of the shielded wire on the electric wire and prevents the generation of electromagnetic wave interference;

In addition, another function of the integrated joint control is to enable the grounding terminal and the shielding wire to be automatically disconnected after the plug-in terminal and the power-connecting terminal are pulled out, that is, after the electrical wire and the electrified equipment are completely powered off (for example, before the electrical equipment leaves the factory Or during transportation, or before the installation and commissioning of the electrical equipment without electricity, or when the electrical wire and the electrical equipment need to be transferred or repaired), the insulating block is separated from the electrical equipment, and the grounding terminal and the shielding wire are automatically disconnected. At this time, if the grounding terminal is mistakenly connected to the power supply, because the grounding terminal is disconnected from the shielding wire, no current will flow through, so that it can be avoided when the grounding terminal is mistakenly inserted into the power supply due to mistakes or other factors. The phenomenon that the shielded wire (shielded wire is generally a weak current wire) is overloaded by the current passing through it, resulting in damage to the shielded wire.

2. By setting the socket on the electrical equipment and the plug matching the socket on the insulating protection block, when the electrical equipment is ready to be energized, the insulating protection block is directly inserted on the electrical equipment, and the plug-in terminal can be completed at the same time The insertion of the ground terminal and the ground terminal makes it form a whole, avoiding the trouble and inconvenience caused by the separate insertion of the ground terminal and the plug-in terminal, or the problem of forgetting to insert the ground terminal. It is more firmly fixed on the electrical equipment, thereby increasing the firmness of the connection between the plug-in terminal and the grounding terminal and the electrical equipment.

3. By setting the comprehensive joint control mechanism as a horizontal bar slidingly connected with the horizontal channel and a vertical bar slidingly connected with the vertical channel, and connecting the first spring made of insulating material with the right side wall of the horizontal channel, the right side of the horizontal bar The end face and the upper end wall of the vertical rod are set as a matching slope, and the lower end of the vertical rod passes through the second spring made of conductive material and a conductive voltage piece that can be pressed on the shielding wire, and in the natural state of the first spring and the second spring Next, the inclined planes of the horizontal bar and the vertical bar are at the same height but not in contact. The above setting is because in the natural state of the first spring and the second spring, the inclined planes of the horizontal bar and the vertical bar are at the same height but not in contact with each other. Therefore, when the insulation block is not inserted, the horizontal bar is disconnected from the vertical bar, so that the grounding terminal connected to the horizontal bar cannot conduct with the shielding wire, even if the grounding terminal is inserted into the power supply or connected to the power supply If the grounding terminal is mistakenly inserted into the power supply due to mistakes or other factors, the shielding wire (the shielding wire is generally a weak current wire) will be caused by the current passing through. Current overload, resulting in damage to the shielding line;

In addition, when the insulating protective block is inserted, the horizontal distance between the plug-in terminal and the plug-in port is greater than the horizontal distance between the ground terminal and the ground socket and the horizontal distance between the horizontal bar and the end slope of the vertical bar Therefore, when inserting the insulating protective block, before the plug-in terminal is in contact with the plug-in port, the grounding terminal first contacts the grounding port, and as the insulating block moves and inserts as a whole, the first spring is compressed and grounded The terminal and the horizontal rod start to move to the right, and then the slope of the horizontal rod is pressed against the slope of the vertical rod. At this time, the horizontal rod and the vertical rod are connected, that is, the ground terminal and the shielding wire are connected, and the shielding wire completes the grounding action, and then continue With the insertion of the insulating protection block, the horizontal rod continues to move to the right, and the vertical rod is pressed by the horizontal rod, the second spring is compressed, and the vertical rod moves downward. After the vertical rod moves down to a certain extent, the plug-in terminal is inserted To the plug-in port, so that the electrical wires are turned on, and the electrical equipment is energized; thus realizing grounding first and then energizing;

Conversely, when the power needs to be cut off and the insulating protective block is pulled out, the insulating protective block is pulled to the right and moves to the right. The compressed first spring and second spring begin to reset gradually, and the grounding terminal is pushed to the left, and is still in contact with the grounding port, that is, the shielding wire is still in the grounding state, until the first spring and the second spring are fully reset, the horizontal The rod and the slope of the vertical rod are separated and disconnected, so the shielding wire is disconnected from the ground; thus, the power is cut off first and then the ground is disconnected;

In addition, with the above-mentioned setting, after the insulating protective block is fully inserted, because of the elastic reset of the first spring and the second spring, that is, the energy storage performance, the ground terminal is firmly pressed on the ground port, and the conductive voltage plate is firmly pressed on the ground port. On the shielded wire, the slope of the horizontal rod is firmly pressed against the slope of the vertical rod, so as to firmly connect the power connection port and the shielded wire together, avoid loosening at the interface of each component, and ensure the grounding performance of the shielded wire. In addition, The shielding wire is pressed on the inner sheath, which can prevent the shielding wire from lifting and ensure the shielding effect of the shielding wire.

In addition, the setting of the above-mentioned second spring is firstly used as an energy storage component to store energy during the compression process, and secondly used as a conductor connected between the conductive voltage sheet and the vertical rod for conduction;

In short, the above-mentioned comprehensive joint control mechanism is set as the structure of skillfully connected horizontal rods, vertical rods, first springs, second springs and conductive voltage sheets. It can realize the control of various functional states, such as realizing the grounding of electrical equipment before powering on, disconnecting the grounding after the power is cut off, and after the electrical wire is completely unplugged, the exposed grounding terminal is not connected to the shielding wire, and can be in the power-on state Next, firmly connect the power connection port and the shielded wire together to avoid loosening at the interface of each component. It is multi-purpose and ingenious.

4. By providing a groove on the electrical equipment that matches the insulating protective block, the plug-in port and the grounding port are set in the groove. When inserting the insulating protective block, directly connect the insulating protective block to the groove Align and then insert, which is convenient for the accurate positioning and insertion of the insulating block, and avoids the misalignment of the plug-in terminal and the plug-in port or the misalignment of the ground terminal and the ground port caused by the inclination or deflection of the insulating block. The problem, and avoid the problem that the functional state is not easy to realize due to the deflection of the insulating block.

5. By ensuring that the maximum elastic deformation of the first spring is greater than the horizontal distance between the end slopes of the horizontal rod and the vertical rod, when the first spring is pressed, the displacement of the horizontal rod can be greater than that of the horizontal rod and the vertical rod The horizontal distance between the end slopes, so that the horizontal rod can contact and push the vertical rod, so that the horizontal rod and the vertical rod can be conducted.

6. By setting the conductive voltage sheet as an arc to match the shielded wire, the conductive voltage sheet is in good contact with the shielded wire.

Description of drawings

Below in conjunction with accompanying drawing, the present invention will be further described:

Fig. 1 is the structural representation of prior art;

Figure 2 is a schematic diagram of the overall structure of the present invention (the plug-in terminal and the ground terminal are not connected to the electrical equipment);

Figure 3 is a cross-sectional view of the present invention (the plug-in terminal and the ground terminal are not connected to the electrical equipment);

Figure 4 is an enlarged view of Figure 3 at A;

Fig. 5 is the second cross-sectional view of the present invention (the plug-in terminal and the ground terminal are connected to the electrical equipment);

Fig. 6 is the enlarged view at B place of Fig. 5;

Fig. 7 is the C-C sectional view of Fig. 6;

Fig. 8 is a D-D sectional view of Fig. 6;

Figure 9 is an enlarged view of Figure 8 at E;

In the figure: 1. Electrical equipment; 2. Electric wire; 3. Plug-in terminal; 4. Grounding terminal; 5. Inner sheath; 6. Shielding wire; 7. Outer sheath; 1, plug-in port; 10, grounding port; 11, annular gap; 12, horizontal channel; 13, vertical channel; 14, socket; 15, plug; 16, horizontal rod; 17, vertical rod; 18, first spring; 19 , slope; 20, second spring; 21, conductive voltage sheet; 22, fixed block; 23, horizontal slider; 24, horizontal chute; 25, vertical slider; 26, vertical chute; 27, fixed chute; 28, groove.

Detailed ways

The present invention will be described in further detail below in conjunction with accompanying drawings 2-9. For a clearer illustration, only structures related to the inventive points of the present invention are shown in the figure.

For the convenience of description, the coordinate system is now defined as shown in Figure 2, and the left and right directions are horizontal, the front and rear directions are vertical, and the up and down directions are vertical.

The embodiment of the invention discloses a grounding device for shielded wires of electrical equipment. Referring to Figure 2, the grounding device for the shielded wire of electrical equipment is connected to the electrical equipment, specifically including the electrical wire 2, the plug-in terminal 3 and the grounding terminal 4, as shown in Figure 3 and Figure 5, the electrical wire 2 is arranged in sequence from the inside to the outside Inner layer sheath 5, shielding wire 6 and outer layer sheath 7, the electrical equipment 1 is provided with the plug-in port 9 that cooperates with the plug-in terminal 3 and the ground port 10 that cooperates with the ground terminal 4. When setting, the ground port 10 must be Slightly larger than the ground terminal 4, the end of the inner sheath 5 is a certain distance away from the electric wire 2 so that the end of the electric wire 2 is partially exposed, so as to facilitate fixing the plug-in terminal 3, and one end of the plug-in terminal 3 is covered by injection molding The insulating protective block 8 covering the outside of the electric wire 2 and the outer sheath 7 is fixed to the exposed part of the end of the electric wire 2, and the other end of the plug-in terminal 3 exposes the insulating protective block 8 to cooperate with the plug-in port 9, as shown in Figure 4 and As shown in FIG. 6 , an annular notch 11 is provided on the outer sheath 7 inside the insulation block 8 so that the shielded wire 6 is exposed, so that the shielded wire 6 is partially exposed for conductive connection with the ground terminal 4 .

The insulating block 8 is provided with a horizontal channel 12 on the left side communicating with the outside world and a vertical channel 13 at both ends communicating with the horizontal channel 12 and the annular gap 11 on the outer side of the upper part of the outer sheath 7. The grounding terminal 4. Through the comprehensive joint control mechanism in the horizontal channel 12 and the vertical channel 13, it can be connected or disconnected with the shielded wire 6 exposed at the annular gap 11, and the electric wire 2 is energized or disconnected after inserting the plug-in terminal 3. When the plug-in terminal 3 is pulled out to power off the electric wire 2, the comprehensive joint control mechanism makes the shielded wire 6 grounded before the electric wire 2 is connected to the electric conduction, and then grounded and disconnected after the electric wire 2 is powered off, and the shielded wire 6 is disconnected after the electric wire 2 is pulled out. After plugging in the power terminal 3 and the power connection terminal, the ground terminal 4 and the shielding wire 6 are automatically disconnected.

In addition, the electrical equipment 1 is provided with a socket 14, and the insulating protective block 8 is provided with a plug 15 matched with the socket 14, so that when the electrical equipment 1 is ready to be energized, the insulating protective block 8 is directly inserted into the On the electrical equipment 1, the insertion of the plug-in terminal 3 and the ground terminal 4 can be completed at the same time, so that they form a whole, avoiding the trouble and inconvenience caused by the separate insertion of the ground terminal 4 and the plug-in terminal 3 or forgetting to insert the ground terminal 4, in addition, setting the socket 14 and the plug 15 can enable the insulating block 8 to be more firmly fixed on the electrical equipment 1, thereby increasing the firmness of the connection between the plug-in terminal 3 and the grounding terminal 4 and the electrical equipment 1;

In addition, in order to prevent the insulating block 8 from tilting when the insulating block 8 is inserted, the electrical equipment 1 is provided with a groove 28 matching the insulating block 8, and the plug-in port 9 and the grounding port 10 is set in the groove 28; when inserting the insulation protection block 8, directly align the insulation protection block 8 with the groove 28, and then insert it, so as to facilitate the accurate positioning and insertion of the insulation protection block 8 and avoid the insulation protection block 8 The plug-in terminal 3 and the plug-in port 9 cannot be aligned or the ground terminal 4 and the ground port 10 cannot be aligned and inserted due to inclination or deflection, and avoid various functional states caused by the deflection of the insulating block 8 Well realized question.

In a word, the setting of the insulating protective block 8 above completely covers the outer sheath 7 by injection molding. , grounding terminal 4, grounding port 10, plug-in port 9 and other components are completely protected in the insulating protection block 8 and the electrical equipment 1 to avoid exposure. The setting of the insulating protection block 8 is to improve safety and reduce safety accidents The second is to reduce or avoid the wear and tear caused by the exposure of the plug-in terminal 3 and the ground terminal 4 in the prior art. The third is to be able to fixedly connect the electric wire 2 and the plug-in terminal 3; the fourth is to make the plug-in terminal 3 and the power connection The terminal connection forms a whole, and the plug-in terminal 3 and the power-connecting terminal can be plugged and pulled out at the same time;

With the arrangement of the above-mentioned horizontal channel 12, vertical channel 13 and integrated joint control mechanism, the integrated joint control mechanism can make the electrical equipment 1 shielded wire 6 grounded first and then the electric wire 2 is powered on, and the shielded wire 6 is disconnected after the electric wire 2 is powered off. Open grounding, that is, whether it is during the normal power-on use of the electrical equipment 1, or when inserting the plug-in terminal 3 to power on or pulling out the plug-in terminal 3 to power-off the momentary action, it can ensure that the electric wire 2 is powered on In the state, the shielding wire 6 is completely in the grounding state, which greatly ensures the shielding effect of the shielding wire 6 on the electric wire 2 and prevents the generation of electromagnetic wave interference;

In addition, another function of the integrated joint control is to enable the grounding terminal 4 and the shielding wire 6 to be automatically disconnected after the plug-in terminal 3 and the power-connecting terminal are pulled out, that is, after the electric wire 2 and the energized equipment are completely powered off (for example, in the Before the electrical equipment 1 leaves the factory or during transportation, or before the electrical equipment 1 is not connected to electricity, installed and debugged, or when the electrical wire 2 is disconnected from the electrical equipment 1 when it needs to be transferred or needs to be repaired), the insulating protective block 8 is separated from the electrical equipment 1. At this time, if the ground terminal 4 is connected to the power supply by mistake, because the ground terminal 4 is disconnected from the shield wire 6, no current will flow through, thereby avoiding Due to other factors, when the grounding terminal 4 is mistakenly inserted into the power supply, the shielded wire 6 (the shielded wire 6 is generally a weak current wire) is overloaded by the current passing through it, resulting in damage to the shielded wire 6.

The above-mentioned integrated joint control mechanism is realized by the following structure: as shown in Figure 4, Figure 6, Figure 7, Figure 8 and Figure 9, the described integrated joint control mechanism includes a conductive material that is slidably connected with the horizontal channel 12 The horizontal rod 16 made and the vertical rod 17 made of conductive material that is slidably connected with the vertical passage 13, the sliding connection mode of the horizontal rod 16 and the horizontal passage 12 is: as shown in Figure 4 or Figure 6, the horizontal rod 16 A horizontal slider 23 is respectively arranged on the upper and lower sides, and a horizontal chute 24 slidingly matched with the horizontal slider 23 is respectively arranged on the upper and lower sides of the horizontal passage 12, and the horizontal slider 23 can slide along the horizontal chute 24 embedded in the horizontal chute 24. The sliding connection mode between the vertical bar 17 and the vertical channel 13 is: a vertical slider 25 is respectively set on the left and right sides of the vertical bar 17, and a vertical slider 25 is slidably matched to the vertical slider 25 on both sides of the vertical channel 13. The vertical chute 26 , the vertical sliding block 25 is embedded in the vertical chute 26 and can slide along the vertical chute 26 .

As shown in Figure 9, when setting, one end of the horizontal rod 16 is connected to the ground terminal 4, and two fixed blocks 22 are arranged on the front and rear sides on the circumferential surface of the other end, and the fixed blocks 22 pass through the first made of insulating material. The spring 18 is connected to the right side wall of the horizontal passage 12, and the front and rear sides of the horizontal passage 12 are respectively provided with fixing slide grooves 27 to avoid interference with the fixing block 22.

As shown in Figure 4 or Figure 6, the right side end surface of the horizontal bar 16 and the upper end wall surface of the vertical bar 17 are set to match the slope 19 inclined from top to bottom to the left, and the lower end of the vertical bar 17 passes through The second spring 20 made of conductive material is connected with a conductive voltage sheet 21 that can be pressed on the shielded wire 6. In order to make good contact between the conductive voltage sheet 21 and the shielded wire 6, the conductive voltage sheet 21 is as shown in FIG. 6 matching arcs. Of course, in order to reduce the area of the annular notch 11 and reduce the exposure of the shielded wire 6 , the bottom of the annular notch 11 is provided with a second sheath that does not interfere with the conductive voltage sheet 21 .

When the integrated joint control mechanism is set, under the natural state of the first spring 18 and the second spring 20, the horizontal bar 16 and the inclined plane 19 of the vertical bar 17 are at the same height but not in contact, and when the insulating block 8 is inserted , the horizontal distance between the plug-in terminal 3 and the plug-in port 9 is greater than the horizontal distance between the ground terminal 4 and the ground socket 14 and the horizontal distance between the horizontal bar 16 and the end slope 19 of the vertical bar 17 Sum.

The first spring 18 and the second spring 20 mentioned above are all compression springs, the first spring 18 should avoid interference with the vertical rod 17, and the maximum elastic deformation of the first spring 18 is greater than the ends of the horizontal rod 16 and the vertical rod 17. The horizontal distance between the end slopes 19, so that when the first spring 18 is pressed, the displacement of the horizontal rod 16 can be greater than the horizontal distance between the end slopes 19 of the horizontal rod 16 and the vertical rod 17, so that the horizontal rod 16 can contact and push the vertical bar 17, so that the horizontal bar 16 and the vertical bar 17 can be conducted. In addition, the setting of the above-mentioned second spring 20 is firstly used as an energy storage component to store energy during the compression process, and secondly used as a conductor connected between the conductive voltage sheet 21 and the vertical rod 17 for conduction.

The implementation process of the present invention when the electrical equipment 1 is connected to electricity is: align the insulating protective block 8 with the groove 28, insert the insulating protective block 8 into the groove 28, and during this process, that is, when the insulating protective block 8 is inserted, the Before the plug-in terminal 3 is in contact with the plug-in port 9, the ground terminal 4 is first in contact with the ground port 10, and with the overall movement and insertion of the insulating block 8, the first spring 18 is compressed, and the ground terminal 4 and the horizontal bar 16 Start to move to the right, and then the slope 19 of the horizontal rod 16 is pushed against the slope 19 of the vertical rod 17. At this time, the horizontal rod 16 and the vertical rod 17 are connected, that is, the ground terminal 4 and the shielded wire 6 are connected, and the shielded wire 6 is completed. Grounding action, then continue along with the insertion of the insulating block 8, the horizontal rod 16 continues to move to the right, then the vertical rod 17 is pressed by the horizontal rod 16, the second spring 20 is compressed, the vertical rod 17 moves downward, and the vertical rod 17 moves downward. After the 17 moves down to a certain extent, the plug-in terminal 3 is inserted into the plug-in port 9, so that the electric wire 2 is turned on, and the electrical equipment 1 is powered on; thus, it is grounded first and then powered on.

On the contrary, the implementation process of the present invention when the electrical equipment 1 is powered off is: when the power needs to be cut off and the insulating protective block 8 is pulled out, the insulating protective block 8 moves to the right, and the plug-in terminal 3 is first pulled out during this process. Plugging in the power port 9 realizes the power-off of the electrical equipment 1, and at this time, the originally compressed first spring 18 and second spring 20 begin to reset gradually, and the ground terminal 4 is pushed to the left, and is still in contact with the ground port 10. That is, the shielded wire 6 is still in the grounding state, until the first spring 18 and the second spring 20 are fully reset, the horizontal rod 16 and the vertical rod 17 slope 19 are separated and disconnected, and the shielded wire 6 is thus disconnected from the ground; thus realizing the first Disconnect the ground after power failure.

The overall effect of the present invention is: 1. The cooperating arrangement of the insulating protection block 8, the plug-in terminal 3 and the ground terminal 4 makes the plug-in terminal 3 and the ground terminal 4 pluggable at the same time, avoiding that the plug-in terminal 3 and the ground terminal 4 are inserted separately The risk of shielding failure caused by forgetting to insert the ground terminal 4 caused by unplugging; and in the normal plug-in use state, the ground terminal 4 is hidden inside the electrical equipment 1 and the insulating block 8, so as to avoid the ground terminal 4 being directly exposed outside the equipment shell and causing easy damage problem.

2. By setting the insulation protection block 8, the plug-in terminal 3, the ground terminal 4 and the comprehensive joint control mechanism, the electrical equipment 1 is grounded first and then powered on, and the grounding is disconnected after the power is cut off, so that the electrical equipment 1 only needs to be powered on In this state, there is shielding of the shielding wire 6 to avoid the interval state where the electrical equipment 1 is energized, but the shielding wire 6 is still not grounded. Even if the interval is short, it still causes a certain amount of electromagnetic interference.

The plug-in port 9 is arranged on the outside of the device, and the plug-in terminal 3 can be directly inserted on it, which is convenient for plugging and unplugging of the plug-in terminal 3, and avoids that the plug-in port 9 is arranged inside the device shell in the prior art. The problem of inconvenient connection of the terminal 3 or the grounding terminal 4 is inserted on the electrical equipment 1, and the plug-in terminal 3 is located inside the equipment, then the grounding terminal 4 can be removed from the electrical equipment without disconnecting the electrical terminal 3 in the equipment shell. 1 unplugged, resulting in the risk of shield failure. Through the comprehensive joint control mechanism, because in the natural state of the first spring 18 and the second spring 20, the horizontal bar 16 and the inclined plane 19 of the vertical bar 17 are at the same height but not in contact, so that when the insulating block is not inserted 8 state, the horizontal bar 16 is disconnected from the vertical bar 17, so that the ground terminal 4 connected to the horizontal bar 16 cannot conduct with the shielding wire 6, even if the ground terminal 4 is plugged into the power supply or communicated with the power supply, it cannot A conductive loop is formed, so that no current passes through, and the current caused by the current passing through the shielded wire 6 (the shielded wire 6 is generally a weak current wire) is avoided when the ground terminal 4 is mistakenly inserted into the power supply due to mistakes or other factors. overload, resulting in damage to the shielded wire 6. 5. Through the plug-in terminal 3, the ground terminal 4 and the comprehensive joint control mechanism, after the insulating protection block 8 is fully inserted, the ground terminal 4 is firmly pressed against the ground due to the elastic reset performance of the first spring 18 and the second spring 20. On the port 10, the conductive voltage sheet 21 is firmly pressed on the shielded wire 6, and the slope 19 of the horizontal rod 16 is firmly pressed on the slope 19 of the vertical rod 17, thereby firmly connecting the electrical port and the shielded wire 6 together , avoid loosening at the interface of each component, and ensure the grounding performance of the shielded wire 6. In addition, the shielded wire 6 is pressed on the inner layer sheath 5, which can prevent the shielded wire 6 from lifting and ensure the shielding effect of the shielded wire 6.

In a word, the above-mentioned structure in which the comprehensive joint control mechanism is set as the horizontal rod 16, the vertical rod 17, the first spring 18, the second spring 20 and the conductive voltage sheet 21 is ingeniously connected, and its structure is simple, the cost is low, and it is easy to manufacture. Ingeniously conceived, one mechanism can realize the control of multiple functional states, such as realizing that the electrical equipment 1 is grounded first and then energized, the power is first disconnected and then grounded, and after the electrical wire 2 is completely unplugged, the exposed ground terminal 4 is not in contact with the shielding The line 6 is connected, and can firmly connect the power connection port and the shielded line 6 together in the energized state, so as to avoid the loosening of the interface of each component.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations. It should be understood that the specific implementation methods described here are only used to understand the present invention, and are not used to limit the present invention. All other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection of the present invention. range.

Claims (8)

1. A grounding device for shielded wires of electrical equipment, which is connected to electrical equipment, including electrical wires, plug-in terminals and grounding terminals, and the exterior of the electrical wires is provided with an inner sheath, a shielded wire and an outer sheath in sequence from the inside to the outside. It is characterized in that: the electrical equipment is provided with a plug-in port matched with the plug-in terminal and a ground port matched with the ground terminal, the end of the inner sheath is at a certain distance from the electric wire so that the end of the electric wire is partially exposed, and the One end of the plug-in terminal is fixed to the exposed part of the end of the electric wire by injection molding the insulation block outside the outer sheath of the electric wire and the outer sheath, and the other end of the plug-in terminal exposes the insulation block to cooperate with the plug-in port, and the insulation block The inner outer sheath is provided with a circle of annular gaps that expose the shielded wires. The insulating sheath is provided with a horizontal channel on the left side communicating with the outside world on the upper outer side of the outer sheath, and the two ends are respectively connected to the horizontal channel and the outer sheath. The vertical channel connected by the annular gap, the grounding terminal can be connected or disconnected with the shielding wire exposed at the circular gap through the integrated joint control mechanism in the horizontal channel and the vertical channel, and after the plug-in terminal is inserted When the electric wire is energized or the plug-in terminal is pulled out to cut off the electric wire, the comprehensive joint control mechanism makes the shielded wire ground before the electric wire is connected to the electric conduction, and after the electric wire is powered off, the ground is disconnected, and after the electric wire is pulled out After plugging in the power terminal and the power connection terminal, the grounding terminal and the shielding wire are automatically disconnected; the electrical equipment is provided with a socket, and the insulating block is provided with a plug matching the socket; the integrated joint control The mechanism includes a horizontal bar made of conductive material that is slidably connected to the horizontal channel and a vertical bar made of conductive material that is slidably connected to the vertical channel. One end of the horizontal bar is connected to the ground terminal, and two The fixed block is connected to the right side wall of the horizontal channel through the first spring made of insulating material, and the right side end surface of the horizontal bar and the upper end wall surface of the vertical bar are set to match and are inclined from top to bottom to the left The lower end of the vertical rod is connected to a conductive voltage piece that can be pressed on the shielding wire through the second spring made of conductive material; and in the natural state of the first spring and the second spring, the horizontal rod It is at the same height as the slope of the vertical rod but not in contact with each other. When inserting the insulating protective block, the horizontal distance between the plug-in terminal and the plug-in port is greater than the horizontal distance between the ground terminal and the ground socket and the horizontal distance between the horizontal rod and the plug-in port. The sum of the horizontal distances between the end slopes of a vertical bar. 2. A grounding device for shielded wires of electrical equipment according to claim 1, characterized in that: said electrical equipment is provided with a groove matching the insulating protective block, and said plug-in port and grounding port set in the groove. 3. A grounding device for shielded wires of electrical equipment according to claim 2, wherein the first spring and the second spring are both compression springs, and the maximum elastic deformation of the first spring is greater than that of the horizontal bar and the second spring. The horizontal distance between the end slopes of a vertical bar. 4. A grounding device for shielded wires of electrical equipment according to any one of claims 1-3, characterized in that the conductive voltage piece is arc-shaped to match the shielded wire. 5. A grounding device for shielded wires of electrical equipment according to any one of claims 1-3, characterized in that: the bottom of the annular notch is provided with a second sheath that does not interfere with the conductive voltage sheet. 6. A grounding device for shielded wires of electrical equipment according to any one of claims 1-3, wherein a horizontal slider is provided on the upper and lower sides of the horizontal rod, and the upper and lower sides of the horizontal channel Each is provided with a horizontal chute slidingly matched with the horizontal slider, and the horizontal slider can slide along the horizontal chute and is embedded in the horizontal chute. 7. A grounding device for shielded wires of electrical equipment according to any one of claims 1-3, wherein a vertical slider is provided on the left and right sides of the vertical rod, and the upper and lower sides of the vertical channel are Each is provided with a vertical chute that is slidingly matched with the vertical slider, and the vertical slider can slide along the vertical chute and is embedded in the vertical chute. 8. A grounding device for shielded wires of electrical equipment according to any one of claims 1-3, characterized in that: the front and rear sides of the horizontal channel are respectively provided with fixing chute to avoid interference with the fixing block.

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