CN114520449A

CN114520449A - Safety protection belt for power distribution device

Info

Publication number: CN114520449A
Application number: CN202210093470.1A
Authority: CN
Inventors: 王玉虎
Original assignee: Individual
Current assignee: Shanghai Glaier Electric Technology Co.,Ltd.
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-05-20

Abstract

The invention relates to the field of electrical devices, in particular to a safety protection belt for a power distribution device. The safety protection belt is used for closing and opening the opening arranged on the power distribution device, and the rigidity of the contact part of the safety protection belt and the electric connector of the power distribution device is different in each direction. The safety protection belt is provided with a convex-concave structure. The original state of the safety protection belt is set to shield the opening of the power distribution device; when the electric connector of the power distribution device is inserted into the opening, the corresponding inserting part of the safety protection belt is pressed down, the non-pressed part is still in the original state, and the safety protection belt returns to the original state after the electric connector of the power distribution device is pulled out.

Description

Safety protection belt for power distribution device

Technical Field

The invention relates to the field of electrical devices, in particular to a safety protection belt for a power distribution device.

Background

Power distribution devices currently used in residential and commercial buildings are composed of both power rails and electrical connectors. The power distribution device comprises a cavity, the cavity comprises an opening, and a conductor is arranged in the cavity and is electrically connected with an external power supply. The electrical connector can be inserted into the opening to electrically connect with the conductors in the cavity.

Because the opening of the cavity is exposed and is not shielded, the safety and the aesthetic property of the power distribution device are affected.

The invention discloses a safety protection belt for a power distribution device, and aims to solve the problems through a novel structural design scheme.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a safety protection belt with a new-structure elastic body, which can enable an opening of a power distribution device to be always in a protection state under shielding; the opening is protected by designing the elastic structure body with different rigidities in all directions and designing different convex-concave structures on the surface of the elastic structure body.

The specific technical scheme is as follows:

a safety protection belt for a power distribution device is arranged on one side or two sides of an opening of the power distribution device. The safety protection belt is provided as an elastic structure body which has elasticity and has different rigidity at least at the contact part with the electric connector of the power distribution device. In the original state, the safety protection belt covers the opening by the elasticity of the safety protection belt, and in the use state, the safety protection belt deforms and/or shifts under the action of external force to open the opening and returns to the original state after the electric connector is pulled out of the opening. The rigidity difference is utilized to overcome various resistances encountered when the electric connector with different structures is inserted into and pulled out of the opening.

Where stiffness refers to the ability of the safety harness to resist elastic deformation when the electrical connector enters the opening and makes contact with the safety harness. The magnitude of the stiffness depends on the geometry (i.e., structure) and type (i.e., modulus of elasticity) of the safety guard band. The different rigidity means that the rigidity of the safety guard belt in all directions has different results.

The contact surface of the safety protection belt and the electric connector of the power distribution device is set to be a front surface, and the back surface of the front surface is set to be a back surface.

Each component of the safety protection belt is divided according to functions and comprises a fixed end, a supporting end and a movable end which are sequentially connected. The fixing end is arranged at one end of the safety protection belt and used for fixing the safety protection belt to the power distribution device. The supporting end is arranged between the fixed end and the movable end and is used for supporting the safety protection belt to keep the original state and supporting the movement of the movable end. The movable end is arranged at the other end of the safety protection belt and is used for arranging a convex-concave structure, being pressed down under the action of external force and returning to the original state after the external force is eliminated.

The movable end of the safety protection belt is provided with a convex-concave structure.

The relief structure of the safety belt is provided at least on the front side and/or the rear side.

The height of the convex portions of the convex-concave structure was 0.05 μm at the minimum value and 6mm at the maximum value. Wherein, the height refers to the shortest distance from the deepest part of the recess to the most protruded part of the protrusion. When the thickness is less than 0.05 μm, the surface of the safety protection belt tends to be smooth, so that the rigidity is insufficient, and the function (the function of reducing contact friction with an electric connector) cannot be realized, and when the thickness is more than 6mm, the safety protection belt loses necessary elasticity, cannot be bent, and cannot realize the function (an opening is shielded by the elasticity in an original state, and is bent under the action of external force, so that the opening is opened).

Preferably, the relief structure is provided as a longitudinal relief structure;

optionally, the convex-concave structure is arranged as a transverse convex-concave structure;

optionally, the convex-concave structure is an oblique convex-concave structure;

optionally, the convex-concave structure is a fold line convex-concave structure;

optionally, the convex-concave structure is arranged as a ray convex-concave structure;

optionally, the convex-concave structure is a curved convex-concave structure;

optionally, the convex-concave structure is a tooth-shaped convex-concave structure;

the cross section of the safety protection belt is set to be various shapes;

preferably, the cross section of the convex-concave structure is arranged to be arc-shaped;

optionally, the cross section of the convex-concave structure is triangular;

optionally, the cross section of the convex-concave structure is rectangular;

optionally, the cross section of the convex-concave structure is trapezoidal;

optionally, the cross-section of the convex-concave structure is arranged to be multi-shaped;

optionally, the same convex-concave structure is applied to the front surface and the back surface;

optionally, different convex-concave structures are applied to the front surface and the back surface;

optionally, the cross-section of the fixing end is set to be various shapes, including:

preferably, the cross section of the fixed end is provided with a circular end;

optionally, the cross section of the fixed end is an elliptical end;

optionally, the cross section of the fixed end is a square end;

optionally, the cross section of the fixed end is a diamond end;

optionally, the cross section of the fixed end is a quadrilateral end;

optionally, the cross section of the fixing end is a triangular end.

Optionally, at least one split support structure is arranged on the movable end of the safety protection belt; the split supporting structure is provided with a plurality of elastic sheets which independently move respectively.

When the safety protection area sets up components of a whole that can function independently bearing structure:

in the original state, all the elastic sheets are positioned on the same plane and are in a state of covering the opening. When the electric connector is inserted into the opening in a diversion mode, the elastic sheet inserted into the corresponding position is pressed down towards the cavity, and other elastic sheets which are not pressed down are still in the original state. When the electric connector is pulled out of the opening, the elastic sheet is released from pressure and returns to the original state by elasticity.

A power distribution device comprises at least one cavity, wherein a conductor is arranged in the cavity, and an opening is formed in the cavity. The power distribution apparatus also includes an electrical connector. The electrical connector is provided with a current carrier containing a conductor and insertable into the opening. The electric connector can enter the opening through the safety protection belt to be connected with the conductor in the cavity.

Preferably, the safety guard is provided on both sides of the opening position.

Optionally, the safety guard is disposed on one side of the opening position.

Furthermore, one side of one opening position is provided with a safety protection belt.

Optionally, a plurality of safety protection belts are arranged on one side of one opening position.

Under the original state, the safety protection belt is in a shielding state for the opening. When the electric connector guide body is inserted into the opening, the safety protection belt at the corresponding position is pressed down towards the cavity to open the opening, and the part which is not pressed down is still in the original state; after the current carrier of the electric connector is pulled out from the opening, the pressing part automatically returns to the original state under the elastic action.

Has the advantages that:

1. the safety protection belt designed by the invention can always shield the opening and return to the original state after the electric connector is pulled out of the opening, thereby avoiding other objects from directly falling into the opening of the power distribution device, improving the use safety and the cleanliness in the cavity, and simultaneously improving the aesthetic property of the power distribution device.

2. When the electric connector is inserted into the opening, the non-pressed safety protection belt part is still in the original state to protect the opening.

3. The rigidity difference is utilized to overcome various resistances encountered when the electric connector with different structures is inserted into and pulled out of the opening.

Description of the drawings:

in order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a preferred safety guard band having longitudinal asperities;

FIG. 2 is a schematic structural view of a preferred convex-concave structured safety guard belt with an arc-shaped cross section;

FIG. 3 is a schematic cross-sectional view of a power distribution device of a single-sided safety guard band in an original state;

FIG. 4 is a schematic cross-sectional view of a power distribution device of the single-sided safety guard band in a depressed state;

FIG. 5 is a schematic cross-sectional view of a safety belt with a front surface having a longitudinal convex-concave structure;

FIG. 6 is a schematic structural view of a safety guard band with a cross section of a triangular convex-concave structure;

FIG. 7 is a schematic view of a safety belt with a rectangular cross section and a convex-concave structure;

FIG. 8 is a schematic view of a safety belt with a trapezoidal cross section and a convex-concave structure;

FIG. 9 is a schematic structural view of a safety belt with a multi-shaped convex-concave structure in cross section;

FIG. 10 is a schematic cross-sectional view of a safety belt with different convex-concave structures on the front and back sides;

FIG. 11 is a schematic view of a safety guard band having a transverse convex-concave structure;

FIG. 12 is a schematic view of a safety guard band having a slanted convex-concave structure;

FIG. 13 is a schematic view of a safety belt structure having a lattice-shaped oblique convex-concave structure;

FIG. 14 is a schematic view of a safety belt having a triangular oblique convex-concave structure;

FIG. 15 is a schematic view of a safety guard band having a polygonal line relief structure;

FIG. 16 is a schematic view of a safety guard band configuration including a ray relief structure;

FIG. 17 is a schematic view of a safety guard band configuration having a curvilinear relief structure;

FIG. 18 is a schematic view of a safety guard band having a tooth-like relief structure;

FIG. 19 is a cross-sectional view of the fixing end of the round end in cross section;

FIG. 20 is a cross-sectional view of the fixing end of the oval end in cross section;

FIG. 21 is a cross-sectional view of the fixed end with a square end in cross section;

FIG. 22 is a cross-sectional view of the fixed end with diamond-shaped end;

FIG. 23 is a cross-sectional view of a fixing end having a quadrangular end;

FIG. 24 is a cross-sectional view of the fixed end of the triangular end of the cross-section;

FIG. 25 is a schematic view of a safety harness of the compact split support structure;

FIG. 26 is a schematic view of a safety harness configuration for a spaced apart support structure;

FIG. 27 is a schematic cross-sectional view of a power distribution device of a double-sided safety belt in an original state;

FIG. 28 is a schematic cross-sectional view of a power distribution device of the double-sided safety belt in a depressed state.

Description of reference numerals:

101: front side, 102: on the reverse side, 103: fixed end, 1031: rounded end, 1032: elliptical end, 1033: square end, 1034: diamond end, 1035: quadrilateral end, 1036: triangle end, 104: support end, 105: movable end, 100: safety guard belt, 200: convex-concave structure, 2011: longitudinal relief structure, 2012: a transverse convex-concave structure; 2013 oblique convex-concave structure, 2014: broken line relief, 2015: ray relief structure, 2016: curved convex-concave structure, 2017: tooth-like convex-concave structure, 2001: arc, 2002: triangle, 2003: rectangle, 2004: trapezoidal, 2005: multiforme, 2006: tooth piece, 600: split support structure, 601: compact split support structure, 602: interval split support structure, 603: spring, 604: incision, 700: a cavity, 701: opening, 702: live conductor, 703: neutral conductor, 704: ground conductor, 705: safety protection area fixed slot, 800: electrical connector, 801: a flow conductor.

Detailed Description

The embodiments of the present invention will be described in conjunction with the accompanying drawings, and it should be understood that the embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

A safety guard belt for a power distribution device is arranged at the position of an opening 701 of the power distribution device, the safety guard belt 100 is an elastic structure body made of elastic materials, and the rigidity of at least the contact part of the safety guard belt 100 and an electric connector 800 of the power distribution device is different in all directions.

As shown in fig. 1, the overall structure of safety guard band 100 is presented, including front side 101 and back side 102, front side 101 being the side facing out of cavity 700, front side 101 being in contact with electrical connector 800 during use, and back side 102 facing into cavity 700. As shown in fig. 2, according to the functional components of the safety guard belt 100, the safety guard belt 100 further includes a fixed end 103, a supporting end 104 and a movable end 105 connected in sequence, the fixed end 103 fixes the safety guard belt 100 to the power distribution device, the supporting end 104 is used for supporting the movable end 105 and keeping the original state, the movable end 105 is used for shielding the power distribution device and is provided with a convex-concave structure 200, the convex-concave structure 200 is used for realizing the different rigidity of the safety guard belt 100 in each direction, for example, the rigidity of the movable end 105 and the supporting end 104 is different, so that the supporting end 104 can be deformed, and the movable end 105 has certain strength.

As shown in fig. 3 and 4, the power distribution device includes a cavity 700, a conductor disposed in the cavity 700, and an opening 701 disposed on the cavity 700, and an electrical connector 800. One end of the safety guard band 100 is connected to the cavity 700 of the power distribution device. Safety guard 100 is used to shield opening 701 and is deformed by an external force to open opening 701.

Specifically, a safety guard band fixing groove 705 for mounting the safety guard band 100 is provided at an upper portion of one side of the opening 701 facing into the cavity 700. The lower side is provided with a live conductor 702. Opening 701 provides neutral conductor 703 towards the other side within cavity 700. The opening 701 provides a ground conductor 704 towards the underside within the cavity 700.

The working principle is as follows: in the original state, the safety guard band 100 shields the opening 701 by its own elasticity, as shown in fig. 3. When electrical connector 800 is inserted into opening 701, the corresponding portion of safety shield band 100 is pressed down into opening 701, with the remaining portion still in the original state, as shown in FIG. 4. When electrical connector 800 is pulled out, the depressed portion of safety belt 100 returns to its original state. Meanwhile, by using the structure of the safety guard band 100 with different rigidity directions, the resistance of the electric connector 800 to be inserted into or pulled out of the opening 701 is reduced, and the electric connector 800 can be smoothly inserted into or pulled out.

The following examples are intended to be illustrative only of the foregoing description.

Example 1

As a preferred embodiment, as shown in fig. 1, a form in which the projection and depression structure 200 is provided as a longitudinal projection and depression structure 2011 is presented. The longitudinal convexo-concave structure 2011 means that the arrangement direction of convexo-concave is substantially identical to the length direction of the safety belt 100.

In this embodiment, the longitudinal convexo-concave structures 2011 are continuous and arranged in parallel.

As shown in FIG. 2, the cross-sectional configuration of safety guard band 100 depicted in FIG. 1 is presented. Longitudinal relief features 2011 are provided on the obverse side 101 and the reverse side 102, respectively. The cross-section of the projection and depression structure 200 is arranged in an arc 2001.

Arc 2001 means that the convex portion of the convex-concave structure 200 is a convex arc.

Has the advantages that:

the direction of the longitudinal convex-concave structure 2011 is perpendicular to the direction of inserting and pulling out the electrical connector 800, and the cross section of the longitudinal convex-concave structure is arc 2001, so that the electrical connector can be conveniently inserted and pulled out, and meanwhile, the electrical connector 800 only contacts with the convex part of the convex-concave structure 200, and the resistance to inserting and pulling out is reduced.

Example 2

As a preferred example, the height of the convex portions of the convex-concave structure 200 is set to a minimum value of 0.05 μm and a maximum value of 6 mm. In this embodiment, the relief structure 200 is provided on both the front side 101 and the back side 102.

Example 3

As shown in fig. 5, a form in which the projection and depression structure 200 is provided only on the front surface 101 is presented. The safety guard band in this embodiment is provided with the longitudinal convexo-concave structures 2011 only on the front surface 101 thereof, and is uniformly arranged.

Example 4

As shown in fig. 6, the cross-sectional configuration of the projection and depression structure 200 is presented in the form of a triangle 2002. Triangle 2002 means that the convex portion of the convex-concave structure 201 appears as a triangle, and the convex tip is one corner of the triangle 2002. In this embodiment, the triangles 2002 are arranged on the front surface 101 and the back surface 102, and are arranged in parallel and longitudinally.

Example 5

As shown in fig. 7, a form in which the cross section of the convex-concave structure 200 is arranged in a rectangle 2003 is presented. Rectangular means that the convex portion of the convex-concave structure 200 appears rectangular. In this embodiment, the rectangles 2003 are provided on the obverse surface 101 and the reverse surface 102 in a plurality of parallel longitudinal arrangements.

Example 6

As shown in fig. 8, a form in which the cross-section of the projection and depression structure 200 is provided as a trapezoid 2004 is presented. The trapezoid means that the convex portion of the convex-concave structure 200 takes on a trapezoid shape. In this embodiment, the trapezoids 2004 are disposed on the front surface 101 and the back surface 102 in a plurality of parallel longitudinal arrangements.

Example 7

As shown in fig. 9, a form in which the cross-sectional configuration of the projection and depression structure 200 is set to be multiform 2005 is presented. Multiform 2005 means that the convex portion of the relief structure 200 takes on a number of different shapes. In the present embodiment, the multiforme 2005 is disposed on the front surface 101 and the back surface 102, and the multiforme 2005 includes an arc 2001, a triangle 2002, a rectangle 2003, and a trapezoid 2004, and each of the shapes is a plurality and alternately arranged in the longitudinal direction.

Example 8

As shown in fig. 10, a form in which different projection and depression structures 200 are respectively provided on the obverse surface 101 and the reverse surface 102 is exhibited. The cross-section of the relief structure 200 in this embodiment is arranged as an arc 2001 on its front side 101 and as a multiform 2005 on its back side 102.

Example 9

As shown in fig. 11, a form in which the projection and depression structure 200 is provided with the lateral projection and depression structure 2012 is exhibited. The transverse convex-concave structure 2012 means that the arrangement direction of the convex-concave is perpendicular to the length direction of the safety guard belt. In this embodiment, the transverse convexo-concave structure 2012 is disposed on the front surface 101, and the transverse convexo-concave structure 2012 is a plurality of continuous and uniformly arranged parallel structures.

Example 10

As shown in fig. 12, a form in which the projection and depression structure 200 is provided as an oblique projection and depression structure 2013 is exhibited. The oblique convex-concave structure 2013 is in an oblique state that the arrangement direction of convex-concave and the length direction of the safety protection belt form any angle. In this embodiment, the oblique convex-concave structures 2013 are disposed on the front surface 101, and the oblique convex-concave structures 2013 are a plurality of continuous parallel structures which are uniformly arranged.

Example 11

As shown in fig. 13, a form in which the projection and depression structure 200 is provided as an oblique projection and depression structure 2013 is exhibited. In the present embodiment, the oblique convexo-concave structures 2013 are provided on the front surface 101, and take a lattice shape in which a plurality of the oblique convexo-concave structures 2013 intersect with each other.

Example 12

As shown in fig. 14, another form in which the projection and depression structure 200 is provided as the oblique projection and depression structure 2013 is exhibited. In the present embodiment, the oblique prominence and depression structures 2013 are provided on the front surface 101, and have a triangular shape in which a plurality of oblique prominence and depression structures 2013 intersect with each other.

Example 13

As shown in fig. 15, a form in which the projection and depression structure 200 is provided as the folding line projection and depression structure 2014 is presented. The fold line convex-concave structure 2014 means that the convex-concave structure is in various fold line shapes. In this embodiment, the fold line embossment 2014 is disposed on the front face 101,

the same broken lines are continuous and are arranged evenly.

Example 14

As shown in fig. 16, a form in which the projection-depression structure 200 is provided as a ray projection-depression structure 2015 is presented. The ray convex-concave structure 2015 refers to a ray state with the convex-concave arrangement at any angle and any length. In this embodiment, the ray relief structure 2015 is disposed on the front surface 101 and presents a plurality of similar ray shapes with arbitrary angles.

Example 15

As shown in fig. 17, a form in which the projection and depression structure 200 is provided as the curved projection and depression structure 2016 is exhibited. The curve convex-concave structure 2016 means that the convex-concave arrangement is in a curve state of any radian, any length, intersection or non-intersection. In this embodiment, the curved convex-concave structure 2016 is disposed on the front surface 101, and has a plurality of similar curved shapes and is uniformly arranged.

Example 16

As shown in fig. 18, a form in which the projection and depression structure 200 is provided as a tooth-like projection and depression structure 2017 is presented. In this embodiment, the tooth-shaped convex-concave structure 2017 is arranged on the front surface 101, and the convex-concave structure is arranged like the tooth sheets 2006 of the teeth, so that the plurality of tooth sheets 2006 are concave, and the rest parts of the plurality of tooth sheets 2006 are convex and are orderly and uniformly arranged.

Example 17

As shown in fig. 19, a form is presented in which the fixed end 103 of the safety guard is provided as a rounded end 1031. In this embodiment, the fixing end 103 is provided in a circular shape.

Example 18

As shown in fig. 20, a form in which the fixed end 103 of the safety guard band is provided as an elliptical end 1032 is presented. In this embodiment, the fixing end 103 is formed in an elliptical shape.

Example 19

As shown in fig. 21, a form is presented in which the fixed end 103 of the safety guard band is provided as a square end 1033. In this embodiment, the fixing end 103 is provided in a square shape.

Example 20

As shown in FIG. 22, a configuration is presented in which the fixed end 103 of the safety guard band is configured as a diamond shaped end 1034. In this embodiment, the fixing end 103 is configured as a diamond.

Example 21

As shown in fig. 23, a form is presented in which the fixed end 103 of the safety guard band is provided as a quadrangular end 1035. In this embodiment, the fixing end 103 is formed in a quadrangular shape.

Example 22

As shown in FIG. 24, a configuration is presented in which the fixed end 103 of the safety guard band is disposed as a triangular end 1036. In this embodiment, the fixing end 103 is configured to be triangular.

The above examples 17 to 22 list six forms of the cross section of the fixing end 103. It is not difficult to imagine that the device can be arranged in other forms according to the actual situation.

Example 23

As shown in fig. 25, one form of providing safety harness 100 with a separate support structure 600 is presented.

The separated supporting structure 600 is characterized in that a plurality of elastic sheets 603 are arranged on the safety guard band and at the movable end 105 in contact with the electric connector 800. The fixed end 103, the supporting end 104 and the elastic sheet 603 are integrated. By means of the supporting end 104, the elastic pieces 603 can move independently, and the elastic pieces 603 are arranged in parallel and originally cover the opening 701. Because the gap is smaller, the shielding effect is better.

When the electrical connector 800 is inserted into the opening 701, the spring plate 603 inserted into the corresponding portion is pressed into the cavity 700, and the spring plate 603 which is not pressed is still in the original state. When the electrical connector 800 is pulled out of the opening 701, the spring plate 603 is released from the pressure and elastically returns to the original state.

In this embodiment, the split supporting structure 600 is configured as a compact split supporting structure 601. The compact type means that gaps between the elastic pieces 603 are small.

Example 24

As shown in fig. 26, another form of the safety harness installation split support structure 600 is presented.

In this embodiment, the split support structure 600 is provided as a spaced-apart split support structure 602. The difference between the separated supporting structure 602 and the compact separated supporting structure 601 is that: the distance between the elastic sheets 603 is larger than that of the compact split support structure 601. Because the spacing distance is larger, a certain elastic sheet 603 is not interfered by other elastic sheets 603 when moving, and the independent moving effect is better.

In this embodiment, the separated supporting structure 600 is configured as a spaced separated supporting structure 602, and the two sides of each spring plate 603 near the supporting end 104 are configured with notches 604, which is more beneficial to the independent movement of the spring plates 603.

Example 25

As shown in fig. 3, a cross-sectional structure of the power distribution device of the single-sided safety guard in the original state is presented.

The power distribution device is provided with a cavity 700, an opening 701 is formed in the cavity 700, and a safety protection belt 100 is arranged on one side of the opening 701. The fixed end 103 of the safety protection belt 100 penetrates into the safety protection belt fixing groove 705 on the cavity 700 for fixing, the front side 101 faces the outside of the cavity 700, the back side 102 faces the inside of the cavity 700, and the safety protection belt is in an original state of shielding the opening 701.

As shown in fig. 4, the electrical connector 800 is shown inserted into the power distribution unit with the single-sided safety harness. The current carrier 801 of the electrical connector 800 is inserted into the power distribution device, the current carrier 801 presses down the front 101 of the safety guard band toward the cavity 700, and after the current carrier 801 is inserted in place, each conductor of the electrical connector is connected to the corresponding live conductor 702, neutral conductor 703, and ground conductor 704 in the cavity 700. The depressed portion of the single-sided safety guard band is naturally bent into the cavity 700.

Example 26

As shown in fig. 27, a cross-sectional structure of the power distribution device of the double-sided safety guard in the original state is shown. The difference from example 25 is that: safety protection belts are arranged on two sides of the opening 701 of the power distribution device.

As shown in fig. 28, the electrical connector 800 is shown inserted into the power distribution apparatus with the double-sided safety harness. The difference from example 25 is that: the safety protection belts on both sides of the opening 701 of the power distribution apparatus according to this embodiment are both pressed down and are both in a natural bending state towards the inside of the cavity 700.

Claims

1. A safety harness for a power distribution device, the safety harness for closing and opening an opening in the power distribution device, the safety harness comprising: the safety guard band is an elastic structure, wherein the rigidity of the safety guard band at least at the contact part with the electric connector in the power distribution device is different in each direction.

2. The safety harness of claim 1 wherein: the safety protection belt is provided with a convex-concave structure.

3. The safety harness of claim 2 wherein: the minimum value of the height of the convex part of the convex-concave structure is 0.05 μm, and the maximum value of the height is 6 mm.

4. The safety guard band of claim 2 or 3, wherein: the convex-concave structure is arranged into a longitudinal convex-concave structure, a transverse convex-concave structure, an oblique convex-concave structure, a broken line convex-concave structure, a ray convex-concave structure, a curve convex-concave structure or a tooth convex-concave structure.

5. The safety guard belt of claim 4, wherein: the cross section of the convex-concave structure is arc-shaped, triangular, rectangular or trapezoidal.

6. The safety belt of claim 1, wherein: the safety protection devices are at least two and are sequentially arranged along the length direction of the opening formed in the power distribution device.

7. The safety harness of claim 1 wherein: the safety protection belt comprises a fixed end, a supporting end and a movable end which are sequentially connected.

8. The safety harness of claim 7 wherein: the movable end on the safety protection belt is provided with at least one split supporting structure, and the split supporting structure comprises a plurality of elastic sheets which independently move respectively.