A horizontal and vertical screen switching device for a rail power terminal

Abstract

The present invention provides a device for switching between horizontal and vertical screens of a track power supply terminal, comprising a power supply track fixing fastener, a terminal fixing fastener and a power supply device; the power supply track fixing fastener is rotatably connected to the terminal fixing fastener; the power supply device is rotatably arranged on a surface of the terminal fixing fastener close to the power supply track fixing fastener; the rotation axis of the power supply track fixing fastener, the rotation axis of the terminal fixing fastener and the rotation axis of the power supply device are respectively coaxially arranged; the side of the power supply track fixing fastener away from the terminal fixing fastener is detachably connected to the power supply track; the side of the terminal fixing fastener away from the power supply track fixing fastener is used for fixed connection with the track power supply terminal. This device can meet the normal power supply of the track power supply terminal in two different states of horizontal screen and vertical screen without changing the arrangement of the power supply track or removing the power supply device.

Description

Technical Field

[0001] The present invention relates to the technical field of power taking equipment, and in particular to a horizontal and vertical screen switching device for a rail power taking terminal. Background Art

[0002] When installing the rail power terminal, in order to adapt to the horizontal or vertical display mode of the terminal, the usual practice is to install the power supply track horizontally or vertically to enable the terminal to smoothly draw power. However, in some places, due to the limitations of installation conditions or installation space, it is impossible to turn to install the track, making it difficult to switch between horizontal and vertical screens to draw power. Secondly, in order to allow the terminal to be tightly and firmly connected to the power supply track, the connecting power supply device between the terminal and the track is usually tightly matched and not easy to disassemble and assemble to ensure that it is firmly fixed and will not vibrate, shake, or deflect. At the same time, in order to facilitate the installation of the power supply device, the device usually adopts a snap-on structure, which is easy to install but not easy to remove. Therefore, when switching between horizontal and vertical screens, it is very difficult to switch by removing the power supply device. Usually, the horizontal and vertical screen switching is achieved by changing the angle of the power supply track. Summary of the invention

[0003] The technical problem to be solved by the present invention is: a device for switching the horizontal and vertical screens of a track power supply terminal provided by the present invention makes the switching of the horizontal and vertical screens of the track power supply terminal more convenient.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A horizontal and vertical screen switching device for a rail power terminal, comprising a power rail fixing buckle, a terminal fixing buckle and a power device;

[0006] The power rail fixing buckle is rotatably connected to the terminal fixing buckle;

[0007] The power taking device can be rotatably arranged on a surface of the terminal fixing buckle close to the power taking track fixing buckle;

[0008] The rotation axis of the power rail fixing buckle, the rotation axis of the terminal fixing buckle and the rotation axis of the power taking device are respectively coaxially arranged;

[0009] A side of the power rail fixing fastener away from the terminal fixing fastener is detachably connected to the power rail;

[0010] A side of the terminal fixing fastener away from the power rail fixing fastener is used for fixed connection with the rail power terminal.

[0011] The beneficial effects of the present invention are as follows: the present invention provides a device for switching between horizontal and vertical screens of a track power terminal, comprising a power track fixing fastener, a terminal fixing fastener and a power device; the power track fixing fastener, the terminal fixing fastener and the power device can rotate with each other. When the track power terminal needs to switch between horizontal and vertical screens, since the power track fixing fastener and the terminal fixing fastener can rotate with each other, the power track fixing fastener can realize the installation position between the track power terminal and the power track by rotating according to the needs of horizontal and vertical screen switching; secondly, since the power device is designed to be rotatable, the power device can change the position of the power transmission pin according to the position of the track power terminal, so that power can still be drawn after the screen of the track power terminal is switched. This device can meet the normal power supply of the track power terminal in two different states of horizontal screen and vertical screen without changing the arrangement of the power track or removing the power device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The figure shows an assembly diagram of a horizontal and vertical screen switching device for a rail power terminal according to an embodiment of the present invention;

[0013] Figure 2 The figure shows a first internal structure diagram of a horizontal and vertical screen switching device of a track power supply terminal according to an embodiment of the present invention;

[0014] Figure 3 The figure shows a second internal structure diagram of a horizontal and vertical screen switching device of a track power supply terminal according to an embodiment of the present invention;

[0015] Figure 4 The figure is a top view of the internal structure of a horizontal and vertical screen switching device of a rail power terminal according to an embodiment of the present invention;

[0016] Figure 5 The figure shows a cross-sectional view of the internal structure of a horizontal and vertical screen switching device of a rail power terminal according to an embodiment of the present invention;

[0017] Figure 6 The figure shows the internal conductive structure of a horizontal and vertical screen switching device of a track power terminal according to an embodiment of the present invention;

[0018] Figure 7 The figure shows a conversion circuit diagram of a horizontal and vertical screen switching device of a track power terminal according to an embodiment of the present invention;

[0019] Description of labels:

[0020] 1. Power rail fixing buckle; 2. Terminal fixing buckle; 3. Power rail; 4. Rail power terminal; 5. Spring; 6. Rotating body; 7. Rotating shaft; 8. Polygonal block; 9. Circuit board; 10. Probe; 11. Metal sheet; 12. Conversion circuit; 13. Clearance hole; 14. Clearance groove; 15. Slot; 16. Protrusion; 17. Rail;

[0021] 121. Contact; 122. Rectifier bridge. DETAILED DESCRIPTION

[0022] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0023] Please refer to Figures 1 to 7 , a horizontal and vertical screen switching device for a rail power terminal, comprising a power rail fixing buckle, a terminal fixing buckle and a power device;

[0024] The power rail fixing buckle is rotatably connected to the terminal fixing buckle;

[0025] The power taking device can be rotatably arranged on a surface of the terminal fixing buckle close to the power taking track fixing buckle;

[0026] The rotation axis of the power rail fixing buckle, the rotation axis of the terminal fixing buckle and the rotation axis of the power taking device are respectively coaxially arranged;

[0027] A side of the power rail fixing fastener away from the terminal fixing fastener is detachably connected to the power rail;

[0028] A side of the terminal fixing fastener away from the power rail fixing fastener is used for fixed connection with the rail power terminal.

[0029] From the above description, it can be seen that the beneficial effects of the present invention are: the present invention provides a track power terminal horizontal and vertical screen switching device, including a power track fixing clip, a terminal fixing clip and a power device; the power track fixing clip, the terminal fixing clip and the power device can rotate with each other. When the track power terminal needs to switch between horizontal and vertical screens, since the power track fixing clip and the terminal fixing clip can rotate with each other, the power track fixing clip can be rotated according to the needs of horizontal and vertical screen switching to achieve the installation position between the track power terminal and the power track; secondly, since the power device is designed to be rotatable, the power device can change the position of the power transmission pin according to the position of the track power terminal, so that the power can still be drawn after the screen of the track power terminal is switched. This device can meet the normal power supply of the track power terminal in two different states of horizontal and vertical screens without changing the arrangement of the power track or removing the power device.

[0030] Furthermore, the power extraction device includes a spring and a rotating body;

[0031] A rotating shaft is fixedly provided on the rotating body;

[0032] The spring is sleeved on the rotating shaft;

[0033] One end of the spring is connected to the rotating body, and the other end of the spring is connected to the terminal fixing buckle;

[0034] The terminal fixing buckle is provided with an axis hole for the rotation and movement of the rotating shaft;

[0035] A polygonal block is provided at one end of the rotating shaft away from the rotating body;

[0036] A groove adapted to the polygonal block is provided on a surface of the terminal fixing buckle away from the power rail fixing buckle;

[0037] The geometric center of the groove coincides with the virtual axis of the axial hole.

[0038] Working principle: When the power-taking device needs to change the angle, the rotating body is pressed downward, and the rotating body drives the rotating shaft to move downward, so that the polygonal block at the end of the rotating shaft is disengaged from the groove, and the rotating shaft without groove limitation can rotate freely. After the rotating shaft is rotated to the required position, the polygonal block returns to the groove under the action of the spring restoring force to limit and fix the rotating shaft, so that the power-taking device can be fixed after the angle is changed.

[0039] From the above description, it can be seen that, through the action of the spring, the power taking device can automatically return to its original position after the position rotation is completed; further, the fixed circumferential positioning is performed by using the surface matching to ensure that the power taking device will not move automatically in the working state.

[0040] Furthermore, the power extraction device also includes a circuit board, two probes and two metal sheets;

[0041] The circuit board is rotatably connected to the terminal fixing buckle;

[0042] The two probes are arranged at the bottom of the circuit board;

[0043] The two metal sheets are arranged on the top of the circuit board, and the bodies of the two metal sheets are fixedly connected to the rotating body;

[0044] The two probes are electrically connected to the two metal sheets respectively through the circuit board;

[0045] The output ends of the two probes are electrically connected to the positive and negative electrodes of the track power supply terminal respectively;

[0046] The two metal sheets are electrically connected to the two electric tracks of the power taking track respectively.

[0047] It can be seen from the above description that the circuit board not only plays the role of fixing the probe and the metal sheet, but also plays the role of electrically connecting the metal sheet and the probe.

[0048] Furthermore, the geometric center of the circuit board coincides with the virtual axis of the rotation axis;

[0049] The two metal sheets are centrally symmetrical about the geometric center of the circuit board;

[0050] The two metal sheets are elastic.

[0051] It can be seen from the above description that the elasticity of the metal sheet is utilized to ensure the reliability of the contact between the metal sheet and the power rail, thereby ensuring the stability of the electrical conduction.

[0052] Furthermore, a conversion circuit is provided on the terminal fixing buckle;

[0053] The output end of the conversion circuit is electrically connected to the input end of the track power supply terminal;

[0054] The input end of the conversion circuit is provided with four contacts; the four contacts are distributed in a square shape;

[0055] Two adjacent contacts are electrically connected, and another two adjacent contacts are electrically connected;

[0056] The two probes are centrosymmetric about the geometric center of the circuit board;

[0057] The two probes are electrically connected to two diagonal contacts respectively.

[0058] It can be seen from the above description that the four contacts are distributed in a square shape to ensure that the probe can still be electrically connected to the contacts after the power extraction device is rotated 90 degrees.

[0059] Furthermore, a rectifier bridge is provided in the conversion circuit;

[0060] The two input pins of the rectifier bridge are electrically connected to two unconnected contacts respectively; the output end of the rectifier bridge is electrically connected to the input end of the track power terminal.

[0061] It can be seen from the above description that the setting of the rectifier bridge can avoid the problem of polarity error of the track power terminal due to the reversal of the positive and negative poles.

[0062] Furthermore, an elastic telescopic structure is provided at the end of the probe.

[0063] From the above description, it can be seen that setting the probe to be elastically retractable is to ensure the contact between the probe and the contact point and the stability of conduction on the one hand; on the other hand, when the power extraction device changes its angle, the downward pressing process makes the probe have yielding properties.

[0064] Furthermore, the terminal fixing buckle is provided with a clearance hole for the metal sheet to rotate;

[0065] The clearance hole is in the shape of an arc;

[0066] The central angle of the arc-shaped clearance hole is 90 degrees.

[0067] It can be seen from the above description that the 90-degree setting of the clearance hole is used to achieve 90-degree limit on the rotation of the power taking device, thereby avoiding excessive or incomplete rotation of the power taking device.

[0068] Furthermore, the power-taking track fixing fastener is provided with a clearance groove for the power-taking device to rotate;

[0069] A plurality of slots are provided on the side wall of the give way slot;

[0070] The multiple slots are distributed at an angle of 90 degrees around the rotation axis of the power rail fixing buckle;

[0071] The terminal fixing buckle is provided with a plurality of protrusions adapted to the clamping slots.

[0072] It can be seen from the above description that the power rail fixing fastener and the terminal fixing fastener are rotated and then fastened together by the cooperation of the fastening groove and the protrusion.

[0073] Furthermore, it is characterized in that the power-taking track fixing fastener is provided with a rail adapted to the width of the power-taking track.

[0074] It can be seen from the above description that the clamping rail is used to clamp the power rail fixing fastener to the power rail, which is convenient for disassembly and assembly while ensuring the reliability of the clamping.

[0075] The usage and working principle of this device: When the track power terminal needs to be displayed in horizontal screen, the direction of the track of the power track fixing buckle needs to be set to be perpendicular to the direction of the track power terminal in vertical screen, and the connection direction of the two metal sheets is set parallel to the direction of the track of the power track fixing buckle. The power device is installed on the power track. At this time, the terminal is in vertical screen state. Since the connection direction of the two metal sheets is parallel to the direction of the power track at this time, it is impossible to draw power from the power track (the connection direction of the two metal sheets is perpendicular to the direction of the power track, that is, the metal sheets are parallel to the direction of the power track). In order to achieve electrical connection, the connection direction of the two metal sheets needs to be rotated 90 degrees. Since the terminal fixing buckle and the metal sheet are fixed, rotating the terminal fixing buckle 90 degrees can drive the metal sheet to rotate 90 degrees, so that the power-taking end of the metal sheet is electrically connected to the power-taking track. Since the terminal fixing buckle and the track power-taking terminal are fixedly connected, when the terminal fixing buckle is rotated 90 degrees, the track power-taking terminal is changed from the vertical screen state during installation to the horizontal screen state during operation.

[0076] When it is necessary to convert the power supply mode from the horizontal screen display to the vertical screen display, rotate the fixed clip of the power supply track so that the direction of the clip is consistent with the direction of the vertical screen of the terminal. Since the connection direction of the two metal sheets is perpendicular to the direction of the clip of the fixed clip of the power supply track at this time, the metal sheet needs to be rotated 90 degrees so that the connection direction of the metal sheet is parallel to the slot direction of the fixed clip of the power supply track. The subsequent installation process is the same as above, so that the track power supply terminal is transformed from the horizontal screen state during installation to the vertical screen state during operation.

[0077] Since the metal sheet rotates relative to the terminal fixing clip when the terminal display is switched, that is, the contact end of the probe and the terminal circuit board changes position, in order to ensure that the power rail terminal can achieve electrical contact with the probe no matter what position the probe rotates to, a square contact is set on the conversion circuit of the power rail terminal, wherein two adjacent contacts are electrically connected to a wire of the power rail terminal, and the other two adjacent contacts are electrically connected to another wire of the power rail terminal. Regardless of whether the probe rotates 90 degrees counterclockwise or clockwise, the two probes are respectively connected to the two diagonal contacts. In order to ensure the accuracy of the positive and negative poles of the power rail terminal, a rectifier bridge is set on the circuit behind the contact, and the accuracy of the input to the electrodes of the power rail terminal is ensured by the rectifier bridge.

[0078] Please refer to Figures 1 to 7 , Embodiment 1 of the present invention is: a horizontal and vertical screen switching device for a track power supply terminal, comprising a power supply track fixing fastener 1, a terminal fixing fastener 2 and a power supply device;

[0079] The power rail fixing buckle 1 is rotatably connected to the terminal fixing buckle 2;

[0080] The power taking device can be rotatably arranged on a surface of the terminal fixing buckle 2 close to the power taking track fixing buckle 1;

[0081] The rotation axis of the power rail fixing buckle 1, the rotation axis of the terminal fixing buckle 2 and the rotation axis of the power taking device are respectively coaxially arranged;

[0082] The side of the power rail fixing fastener 1 away from the terminal fixing fastener 2 is detachably connected to the power rail 3;

[0083] The side of the terminal fixing fastener 2 away from the power rail fixing fastener 1 is used for fixed connection with the rail power terminal 4 .

[0084] Please refer to Figure 5 and Figure 6 Specifically, the power extraction device includes a spring 5 and a rotating body 6;

[0085] A rotating shaft 7 is fixedly disposed on the rotating body 6;

[0086] The spring 5 is sleeved on the rotating shaft 7;

[0087] One end of the spring 5 is connected to the rotating body 6, and the other end of the spring 5 is connected to the terminal fixing buckle 2;

[0088] The terminal fixing buckle 2 is provided with an axis hole for the rotation and movement of the rotating shaft 7;

[0089] A polygonal block 8 is provided at one end of the rotating shaft 7 away from the rotating body 6;

[0090] A groove adapted to the polygonal block 8 is provided on a surface of the terminal fixing buckle 2 away from the power rail fixing buckle 1;

[0091] The geometric center of the groove coincides with the virtual axis of the axial hole.

[0092] Preferably, the polygonal block 8 is a square.

[0093] Please refer to Figure 5 and Figure 6 Specifically, the power extraction device further includes a circuit board 9, two probes 10 and two metal sheets 11;

[0094] The circuit board 9 is rotatably connected to the terminal fixing buckle 2;

[0095] The two probes 10 are arranged at the bottom of the circuit board 9;

[0096] The two metal sheets 11 are arranged on the top of the circuit board 9, and the bodies of the two metal sheets 11 are fixedly connected to the rotating body 6;

[0097] The two probes 10 are electrically connected to the two metal sheets 11 respectively through the circuit board 9;

[0098] The output ends of the two probes 10 are electrically connected to the positive and negative electrodes of the track power terminal 4 respectively;

[0099] The two metal sheets 11 are electrically connected to the two electric tracks of the power taking track 3 respectively.

[0100] Specifically, the two probes 10 are respectively connected to the two metal sheets 11 through wires on the circuit board 9 , one probe 10 is connected to one metal sheet 11 , and the other probe 10 is connected to the other metal sheet 11 .

[0101] Please refer to Figure 3 Figure 4 and Figure 5 Specifically, the geometric center of the circuit board 9 coincides with the virtual axis of the rotating shaft 7;

[0102] The two metal sheets 11 are centrally symmetrical about the geometric center of the circuit board 9;

[0103] The two metal sheets 11 are elastic.

[0104] Please refer to Figure 3 and Figure 6 Specifically, the end of the probe 10 is provided with an elastic telescopic structure.

[0105] Please refer to Figure 2 and Figure 4 Specifically, the terminal fixing buckle 2 is provided with a clearance hole 13 for the metal sheet 11 to rotate;

[0106] The clearance hole 13 is in the shape of an arc;

[0107] The central angle of the arc-shaped clearance hole 13 is 90 degrees.

[0108] Please refer to Figure 2 and Figure 4 Specifically, the power rail fixing buckle 1 is provided with a clearance groove 14 for the rotation of the power taking device;

[0109] A plurality of slots 15 are provided on the side wall of the clearance slot 14;

[0110] The multiple slots 15 are distributed at an angle of 90 degrees around the rotation axis of the power rail fixing fastener 1;

[0111] The terminal fixing buckle 2 is provided with a plurality of protrusions 16 adapted to the slots 15 .

[0112] Preferably, the number of the slots 15 is 4; the number of the protrusions 16 is 2, and the angle between them is 180 degrees;

[0113] Specifically, the contact edges of the slot 15 and the protrusion 16 are rounded to facilitate the engagement and disengagement of the slot 15 and the protrusion 16 .

[0114] Please refer to Figure 1 and Figure 2 Specifically, the power rail fixing clip 1 is provided with a rail 17 adapted to the width of the power rail 3 .

[0115] Please refer to Figures 1 to 7 , Embodiment 2 of the present invention is: In this embodiment, based on Embodiment 1, a conversion circuit 12 is provided on the terminal fixing buckle 2;

[0116] The output end of the conversion circuit 12 is electrically connected to the input end of the track power terminal 4;

[0117] The input end of the conversion circuit 12 is provided with four contacts 121; the four contacts 121 are distributed in a square shape;

[0118] Two adjacent contacts 121 are electrically connected, and another two adjacent contacts 121 are electrically connected;

[0119] The two probes 10 are centrally symmetrical about the geometric center of the circuit board 9;

[0120] The two probes 10 are electrically connected to the two diagonal contacts 121 respectively.

[0121] The two adjacent contacts 121 are electrically connected via a wire; and the two probes 10 are always electrically connected to the diagonal contacts 121 .

[0122] Please refer to Figure 7 Specifically, the conversion circuit 12 is provided with a rectifier bridge 122;

[0123] The two input pins of the rectifier bridge 122 are electrically connected to two unconnected contacts 121 respectively; the output end of the rectifier bridge 122 is electrically connected to the input end of the track power terminal 4.

[0124] In summary, the present invention provides a device for switching the screen between horizontal and vertical for a track power terminal, including a power track fixing fastener, a terminal fixing fastener and a power device; the power track fixing fastener, the terminal fixing fastener and the power device can rotate with each other. When the track power terminal needs to switch between horizontal and vertical screens, since the power track fixing fastener and the terminal fixing fastener can rotate with each other, the power track fixing fastener can realize the installation position between the track power terminal and the power track by rotating according to the need of horizontal and vertical screen switching; secondly, since the power device is designed to be rotatable, the power device can change the position of the power transmission pin according to the position of the track power terminal, so that the screen of the track power terminal can still be powered after switching. Furthermore, through the action of the spring, the power device can automatically return to its original position after the position is rotated; the fixed position is circumferentially positioned by using the surface matching to ensure that the power device will not move automatically in the working state. The square distribution of contacts and the setting of the rectifier bridge can avoid the device from not working properly due to the wrong positive and negative polarity; and it makes the power taking device unnecessary to select the rotation direction, which improves the comfort of the device. This device can meet the normal power supply of the track power taking terminal in two different states of horizontal and vertical screens without changing the arrangement of the power taking track or removing the power taking device.

[0125] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A horizontal and vertical screen switching device for a rail power terminal, characterized in that: It includes a power rail fixing buckle, a terminal fixing buckle and a power taking device; The power rail fixing buckle is rotatably connected to the terminal fixing buckle; The power taking device can be rotatably arranged on a surface of the terminal fixing buckle close to the power taking track fixing buckle; The rotation axis of the power rail fixing buckle, the rotation axis of the terminal fixing buckle and the rotation axis of the power taking device are respectively coaxially arranged; A side of the power rail fixing fastener away from the terminal fixing fastener is detachably connected to the power rail; The side of the terminal fixing fastener away from the power rail fixing fastener is used for fixed connection with the rail power terminal; The power taking device comprises a spring and a rotating body; A rotating shaft is fixedly provided on the rotating body; The spring is sleeved on the rotating shaft; One end of the spring is connected to the rotating body, and the other end of the spring is connected to the terminal fixing buckle; The terminal fixing buckle is provided with an axis hole for the rotation and movement of the rotating shaft; A polygonal block is provided at one end of the rotating shaft away from the rotating body; A groove adapted to the polygonal block is provided on a surface of the terminal fixing buckle away from the power rail fixing buckle; The geometric center of the groove coincides with the virtual axis of the shaft hole; The power extraction device also includes a circuit board, two probes and two metal sheets; The circuit board is rotatably connected to the terminal fixing buckle; The two probes are arranged at the bottom of the circuit board; The two metal sheets are arranged on the top of the circuit board, and the bodies of the two metal sheets are fixedly connected to the rotating body; The two probes are electrically connected to the two metal sheets respectively through the circuit board; The output ends of the two probes are electrically connected to the positive and negative electrodes of the track power supply terminal respectively; The two metal sheets are electrically connected to the two electric tracks of the power taking track respectively.

2. A horizontal and vertical screen switching device for a rail power terminal according to claim 1, characterized in that: The geometric center of the circuit board coincides with the virtual axis of the rotation axis; The two metal sheets are centrally symmetrical about the geometric center of the circuit board; The two metal sheets are elastic.

3. A horizontal and vertical screen switching device for a rail power terminal according to claim 1, characterized in that: The terminal fixing buckle is provided with a conversion circuit; The output end of the conversion circuit is electrically connected to the input end of the track power supply terminal; The input end of the conversion circuit is provided with four contacts; the four contacts are distributed in a square shape; Two adjacent contacts are electrically connected, and another two adjacent contacts are electrically connected; The two probes are centrosymmetric about the geometric center of the circuit board; The two probes are electrically connected to two diagonal contacts respectively.

4. A horizontal and vertical screen switching device for a rail power terminal according to claim 3, characterized in that: A rectifier bridge is provided in the conversion circuit; The two input pins of the rectifier bridge are electrically connected to two unconnected contacts respectively; the output end of the rectifier bridge is electrically connected to the input end of the track power terminal.

5. The device for switching between horizontal and vertical screens of a rail power terminal according to claim 1, characterized in that: The end of the probe is provided with an elastic telescopic structure.

6. A horizontal and vertical screen switching device for a rail power terminal according to claim 1, characterized in that: The terminal fixing buckle is provided with a clearance hole for the metal sheet to rotate; The clearance hole is in the shape of an arc; The central angle of the arc-shaped clearance hole is 90 degrees.

7. A horizontal and vertical screen switching device for a rail power terminal according to claim 1, characterized in that: The power taking track fixing buckle is provided with a clearance groove for the rotation of the power taking device; A plurality of slots are provided on the side wall of the give way slot; The multiple slots are distributed at an angle of 90 degrees around the rotation axis of the power rail fixing buckle; The terminal fixing buckle is provided with a plurality of protrusions adapted to the clamping slots.

8. The device for switching between horizontal and vertical screens of a rail power terminal according to claim 1, characterized in that: The power-taking track fixing fastener is provided with a clamping rail adapted to the width of the power-taking track.

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