CN111817165A

CN111817165A - Portable power distribution cabinet

Info

Publication number: CN111817165A
Application number: CN202010727076.XA
Authority: CN
Inventors: 高上喜
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-26
Filing date: 2020-07-26
Publication date: 2020-10-23

Abstract

The invention discloses a portable power distribution cabinet, an operation surface is provided with a panel, a relying body, braces, a backrest body and a handle, the relying body is arranged on the panel, the braces and the panel are connected in a sliding way, the backrest body is arranged in the middle of the panel, the handle is movably connected with the braces through movable shafts, the handle is divided into two halves by the two movable shafts to be connected in a buckling way near the bottom of the panel, the end part of the handle is fixedly provided with an L-shaped pulling handle, soft cotton layers are arranged on the surfaces of the braces and the backrest body, the relying body of the invention is provided with a bolt at the bottom and can be assembled by itself, the surface of the leaning body is concave inwards, and the surface layer is provided with the soft cotton layer, thus conforming to the neck structure of the human body, when the technician backs up to distribute power, the sunken block of the body is attached to the neck to prevent the phenomenon that in the use process, the power distribution cabinet collides the head due to the action fluctuation, and the soft layer can prevent the neck from being injured by the over-hardness of the body.

Description

Portable power distribution cabinet

Technical Field

The invention relates to the field of power equipment, in particular to a portable power distribution cabinet.

Background

The power distribution cabinet is an indispensable accessory in power engineering, the power distribution cabinet can well plan and arrange the wires, but people usually select a portable power distribution cabinet because the power distribution cabinet is relatively large-scale equipment;

in prior art, the pulley is all added in the bottom of switch board to portable switch board, conveniently carry, but in the installation of switch board, some fixed points are located the eminence, technical staff need climb up with the help of the ladder during installation, connect the switch board that the conveying was come to install, and the switch board is large-scale accessory again, need other people to make a concerted effort to transmit the switch board for the technical staff of installation when the conveying, not only can consume manpower resources like this, and need hold the switch board in the transmission course and lift the overhead realization conveying, the switch board will be followed the eminence and fallen down a little carelessly, there is the potential safety hazard.

Disclosure of Invention

Aiming at the defects of the prior art, the invention is realized by the following technical scheme: a portable power distribution cabinet structurally comprises a cabinet body, a cavity opening, a closing door, rollers, an operating surface and a mounting groove, wherein the side surface of the cabinet body is connected with the closing door in a clamping manner, the closing door and the cavity opening are of an integrated structure, the rollers are arranged below the cabinet body, the mounting groove is formed in the operating surface, a mounting opening of the mounting groove is formed in the bottommost part, a top end opening is formed in the middle upper part of the mounting groove, and grooves are formed in two sides in the mounting groove;

the operation face is equipped with the panel, relies on the body, braces ware, the back body, handle, be equipped with the dependence body on the panel, braces ware and panel sliding connection, the back body is established in the middle of the panel, the handle passes through loose axle and braces ware swing joint, the handle is close to and is divided into two halves buckle by two loose axles on the panel bottom and connect, handle port department fixed mounting has drawn the handle of L type structure, braces ware and back body surface all are equipped with soft cotton layer.

As a further optimization of the technical scheme, the surface of the outer side of the relying body has an inward sunken radian, the surface of the front end of the relying body is provided with a soft cotton layer, the lower end of the relying body is a square block, and the bottom of the relying body is provided with a bolt.

As a further optimization of the technical scheme, the braces device is provided with a rotating shaft, a back strap, an extender, a stabilizing thread, a buckle body, a sliding groove, a connecting rod and a sliding block, the rotating shaft is connected with the sliding block in a sliding manner, the back strap is fixedly connected with the rotating shaft, the braces are provided with the extender, the stabilizing thread is movably connected with the connecting rod through the thread, the sliding groove and the connecting rod are of an integrated structure, and the buckle body is installed on the connecting rod.

As a further optimization of the technical scheme, the buckling body is of a block structure with circular arc corners, a spring is arranged at the rear end of the buckling body, and a section of the buckling body, which is provided with the spring, is arranged inside the connecting rod.

As a further optimization of the technical scheme, the extender is provided with a fixed block, a rotating handle, a first sliding cavity, a clamping plate, a second sliding cavity, a clamping cavity, an auxiliary shaft and a supporting shaft, the rotating handle passes through a movable shaft and the clamping plate, the supporting shaft is arranged below the rotating handle, one end of the supporting shaft is arranged inside the fixed block, the clamping plate and the auxiliary shaft are of an integrated structure, the auxiliary shaft is arranged on the second sliding cavity, the first sliding cavity is in sliding connection with the second sliding cavity, the clamping cavity is arranged on the first sliding cavity, the clamping plate is arranged inside the clamping cavity, a convex soft layer is arranged on the wall of the first sliding cavity towards the inner side, a convex block is arranged on the bottom of the auxiliary shaft, a semi-sphere groove is arranged on the sliding track of the first sliding cavity, and the groove of the first sliding cavity is matched with the convex block of the auxiliary shaft.

As the further optimization of this technical scheme, the fixed block distributes along the arc line equidistance of a circular slab for the slope strip, the fixed block is fixed through loose axle swing joint with the circular slab, the circular plate of fixed block is fixed on the buckle board, the arc piece of front end for leaning out of fixed block, the arc piece lower extreme of fixed block is equipped with the spring coupling post, the front end of back shaft is square strip, the square strip of back shaft supports the knot on the fixed block through the connecting axle, be equipped with the identical recess of arc piece with the fixed block on the buckle chamber.

As a further optimization of the technical scheme, the back body is provided with a wire body, a storage groove, a sliding rail, a back support body, a shell, a connecting ball, a pressing body, a buckling body and a transition shaft, the wire body is arranged on the back support body, the storage groove is arranged on the shell, the sliding rail is fixedly connected with the shell, the pressing body and the buckling body are respectively arranged on the wire bodies on two sides of the back support body, the transition shaft is slidably connected with the sliding rail, the sliding rail is movably connected with the back support body through the connecting shaft, the connecting ball is arranged in the back support body, the structure of the storage groove is matched with the back support body, the wire body is provided with an elastic layer, the connecting ball is of a soft hemispherical structure, and the soft hemispherical structure of the connecting ball is buckled on the back support body.

As a further optimization of this technical scheme, press the body and all be the plastics body with the knot body mutually, the knot body mutually be hollow out construction, its both sides are equipped with sunken arc limit, the rear end of knot body mutually is equipped with the rotation bolt, the both sides of pressing the body are equipped with presses down rectangular, the outside one side of pressing down rectangular of pressing down the body is equipped with the protruding limit of arc, the protruding limit of arc of pressing the body coincide with the sunken arc limit of knot body mutually, be equipped with a long post in the middle of pressing the body, the port department of pressing the middle long post of the body is the screw thread hollow out.

Advantageous effects

Compared with the prior art, the portable power distribution cabinet has the following advantages:

1. the bottom of the dependence body is provided with the bolt, the dependence body can be assembled by self, the surface of the dependence body is inwards sunken, and the surface layer is provided with the soft cotton layer, so that the neck structure of a human body is met, when a technician backs up the power distribution, the dependence body is attached to the neck by the sunken block, the power distribution cabinet is prevented from colliding with the head due to the fluctuation of actions in the use process, and the soft layer can prevent the neck from being injured by the dependence body due to over hardness.

2. According to the invention, the mounting opening of the mounting groove is arranged at the bottommost part, the port at the bottom of the connecting rod is assembled from up-sliding until the seal at the middle upper part supports against the connecting rod, so that when the distribution box is carried, the gravity of the distribution box is downward, the mounting outlet is at the low end, the top end is supported against, and the distribution box and the gravity of the distribution box form a relative acting force, so that the distribution box is not easy to slide.

3. The bottom of the auxiliary shaft is provided with the hemispherical convex block which is matched with the first sliding cavity, the convex block of the auxiliary shaft is always attached to the layout of the first sliding chute in the extension process, and when the convex block of the auxiliary shaft is attached to the groove of the first sliding chute, the convex block of the auxiliary shaft is mutually buckled, so that the equipment is more stable after being extended.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic view of the overall structure of a portable power distribution cabinet according to the present invention.

Fig. 2 is a schematic structural diagram of the operation surface of the present invention.

Fig. 3 is a schematic structural view of the shoulder strap apparatus of the present invention.

Fig. 4 is a partial schematic view of fig. 3.

Fig. 5 is a diagram of the operation state of fig. 3.

Fig. 6 is a schematic structural view of the backrest of the present invention.

In the figure: the device comprises a machine body 1, a cavity opening 2, a closing door 3, a roller 4, an operation surface 5, a mounting groove 6, a panel 50, a relying body 51, a belt carrier 52, a backrest body 53, a handle 54, a rotating shaft 521, a belt strip 522, an extender 523, a stabilizing thread 524, a buckling body 525, a sliding groove 526, a connecting rod 527, a sliding block 528, a fixing block 231, a rotating handle 232, a first sliding cavity 233, a buckling plate 234, a second sliding cavity 235, a buckling cavity 236, an auxiliary shaft 237, a supporting shaft 238, a wire body 531, a storage groove 532, a sliding rail 533, a back propping body 534, a shell 535, a connecting ball 536, a pressing body 537, a mutual buckling body 538 and an excess shaft 539.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the following description and the accompanying drawings further illustrate the preferred embodiments of the invention.

Example one

Referring to fig. 1-5, the invention provides a portable power distribution cabinet, which structurally comprises a machine body 1, a cavity opening 2, a closing door 3, rollers 4, an operating surface 5 and an installation groove 6, wherein the side surface of the machine body 1 is connected with the closing door 3 in a clamping manner, the closing door 3 and the cavity opening 2 are of an integrated structure, the rollers 4 are arranged below the machine body 1, the installation groove 6 is arranged on the operating surface 5, the installation opening of the installation groove 6 is arranged at the bottommost part, the middle upper part is a top end opening, and grooves are arranged at two sides inside the installation groove 6;

operation face 5 is equipped with panel 50, relies on body 51, braces 52, the back body 53, handle 54, be equipped with on the panel 50 and rely on body 51, braces 52 and panel 50 sliding connection, the back body 53 is established in the middle of panel 50, handle 54 passes through loose axle and braces 52 swing joint, handle 54 is close to and is divided into two halves buckle by two loose axles on the panel 50 bottom and connect, handle 54 port department fixed mounting has the handle of pulling of L type structure, braces 52 and the back body 53 surface all are equipped with the soft cotton layer, solve the conveying problem of installation switch board eminence.

Rely on the body 51 to the inside sunken radian in surface to the outside, the front end surface that relies on the body 51 is equipped with soft cotton layer, rely on the body 51 lower extreme to be square piece, its bottom is equipped with the bolt, prevents that the neck from receiving the injury.

The strap device 52 is provided with a rotating shaft 521, a strap 522, an extender 523, a stable thread 524, a buckle body 525, a sliding groove 526, a connecting rod 527 and a sliding block 528, the rotating shaft 521 is connected with the sliding block 528 in a sliding manner, the strap 522 is fixedly connected with the rotating shaft 521, the extender 523 is arranged on the strap 522, the stable thread 524 is movably connected with the connecting rod 527 through threads, the sliding groove 526 and the connecting rod 527 are of an integrated structure, and the buckle body 525 is installed on the connecting rod 527 and is used for carrying out the power distribution cabinet by using a double-shoulder strap.

The buckle body 525 is a block-shaped structure with a circular arc corner, a spring is arranged at the rear end of the buckle body 525, one section of the buckle body 525 provided with the spring is arranged inside the connecting rod 527, and the buckle body is firmer when being assembled.

The extender 523 is provided with a fixed block 231, a rotating handle 232, a first sliding cavity 233, a buckling plate 234, a second sliding cavity 235, a buckling cavity 236, an auxiliary shaft 237 and a support shaft 238, the rotating handle 232 passes through a movable shaft and the buckling plate 234, the support shaft 238 is arranged under the rotating handle 232, one end of the support shaft 238 is arranged inside the fixed block 231, the buckling plate 234 and the auxiliary shaft 237 are of an integrated structure, the auxiliary shaft 237 is arranged on the second sliding cavity 235, the first sliding cavity 233 is in sliding connection with the second sliding cavity 235, the buckling cavity 236 is arranged on the first sliding cavity 233, the buckling plate 234 is arranged inside the buckling cavity 236, a convex soft layer is arranged on the wall of the inward side of the first sliding cavity 233, a hemispherical convex block is arranged at the bottom of the auxiliary shaft 237, a hemispherical groove is arranged on the sliding track of the first sliding cavity 233, the groove of the first sliding cavity 233 is matched with the convex block 237 of the auxiliary shaft, the adjustment effect of the straps is realized.

Fixed block 231 distributes along the arc line equidistance of a circular slab for the slope strip, fixed block 231 and circular slab are fixed through loose axle swing joint, the circular plate of fixed block 231 is fixed on buckle 234, the front end of fixed block 231 is the arc piece that leans out, the arc piece lower extreme of fixed block 231 is equipped with the spring coupling post, the front end of back shaft 238 is square, the square of back shaft 238 supports to detain on fixed block 231 through the connecting axle, be equipped with the recess identical with the arc piece of fixed block 231 on buckle chamber 236, realize the fixed effect of the extension body.

The using method comprises the following steps: when a power distribution cabinet at a high position is installed, the connecting rod 527 is aligned to a notch at the lower end of the mounting groove 6, the connecting rod 527 is pushed in, corners of the buckling bodies 525 on two sides of the connecting rod 527 are of arc-shaped block structures, and contact edges of the buckling bodies 525 and the connecting rod 527 are arc edges, so that when the power distribution cabinet is pushed in, edges of the buckling bodies 525 contact with groove walls of the mounting groove 6 and are subjected to extrusion force, the mounting groove 6 extrudes the buckling bodies 525 towards the inside along the arc edges, when the buckling bodies 525 contact with grooves of the mounting groove 6, the buckling bodies 525 naturally bounce and abut against the mounting groove 6, so that the structure assembly is firmer, after the braces 52 are installed, the pull handles 54 are folded towards the machine body 1 along the clamping edges, the occupied space is reduced, then the body structures of the user are combined, the length of the braces 522 is adjusted, the sliding block 528 slides along the sliding groove 526, when the braces slide to, thus, the height and width required by the user can be freely adjusted, then the rotating handle 232 is rotated to enable the buckling cavity 236 to be disengaged from the buckle, then the second sliding cavity 235 is pulled downwards, the buckling plate 234 slides downwards along the sliding track of the buckling cavity 236 under the cooperation of the auxiliary shaft 237, the sliding is stopped when the buckling plate slides to the buckling surface at the other end of the buckling cavity 236, the rotating handle 232 is rotated clockwise, the rotating handle 232 drives the supporting shaft 238 to rotate clockwise, the circular plate surface connected with the fixing block 231 is fixed, the supporting shaft 238 generates displacement change during the rotating process, the other end of the supporting shaft is buckled inside the fixing block 231, a spring is arranged inside the fixing block 231, the supporting shaft 238 and the fixing block 231 have relative acting force, the original position of the fixing block 231 is kept unchanged during the rotating process, and thus the supporting shaft 238 should pull the fixing block 231 clockwise by the buckling acting force, let fixed block 231 buckle board 234 of slowly protruding, laminate with the recess on buckle chamber 236, realize the fixed effect of buckle, and the soft layer on protruding soft layer of first smooth chamber 233 and braces 522 surface can reduce the wearing and tearing of equipment to the shoulder, adjust this back, carry the switch board on the back, climb the mounting point with the help of the ladder, this in-process does not need more manpowers to convey, and with the help of the strength of both shoulders, can balance the pressure that the switch board brought, make it more laborsaving, when the switch board is assembled, just can remove the equipment through pull-down connecting rod 527 of handle 54.

Example two

Referring to fig. 1-6, the invention provides a portable power distribution cabinet, which structurally comprises a machine body 1, a cavity opening 2, a closing door 3, rollers 4, an operating surface 5 and an installation groove 6, wherein the side surface of the machine body 1 is connected with the closing door 3 in a clamping manner, the closing door 3 and the cavity opening 2 are of an integrated structure, the rollers 4 are arranged below the machine body 1, the installation groove 6 is arranged on the operating surface 5, the installation opening of the installation groove 6 is arranged at the bottommost part, the middle upper part is a top end opening, and grooves are arranged at two sides inside the installation groove 6;

The backrest body 53 is provided with a wire body 531, a storage groove 532, a slide rail 533, a back support body 534, a shell 535, a connecting ball 536, a pressing body 537, a fastening body 538 and a transition shaft 539, the wire body 531 is arranged on the back support body 534, the storage groove 532 is arranged on the shell 535, the slide rail 533 is fixedly connected with the shell 535, the pressing body 537 and the fastening body 538 are respectively arranged on the wire body 531 at two sides of the back support body 534, the transition shaft 539 is slidably connected with the slide rail 533, the slide rail 533 is movably connected with the back support body 534 through the connecting shaft, the connecting ball 536 is arranged inside the back support body 534, the storage groove 532 is structurally matched with the back support body 534, the wire body 531 is provided with an elastic layer, the connecting ball 536 is of a soft hemisphere structure, and the soft hemisphere structure of the connecting ball 536 is fastened on the back support body 534 in a propping manner, so that the power distribution cabinet is damaged to the human body in a carrying-up process.

The utility model discloses a press body 537, including press body 537 and knot body 538, press body 538 and be the plastic body mutually, it is hollow out construction to detain the body 538 mutually, and its both sides are equipped with sunken arc limit, the rear end of knot body 538 is equipped with the rotation bolt mutually, the both sides of pressing body 537 are equipped with presses down rectangular, the rectangular outside one side of pressing body 537 is equipped with the protruding limit of arc, the protruding limit of arc of pressing body 537 is coincide with the sunken arc limit of knot body 538 mutually, be equipped with a long post in the middle of pressing body 537, the port department of pressing the middle long post of body 537 is the screw thread fretwork mouth, realizes binding the effect.

On the basis of the first embodiment, in combination with the structure of the human body, the relying body 51 and the backrest body 53 are respectively installed above and in the middle of the panel 50, the backrest body 53 is just clamped on the waist, the backrest body 534 is rotated along the transition shaft 539, the edge of the backrest body 534 faces outwards, the direction of the waist of the human body, the backrest body 534 slides to a proper position along the slide rail 533 with the assistance of the transition shaft 539, the backrest body 534 is pulled to the waist of the human body, so that the backrest body 534 is attached to the waist, then the line bodies on both sides of the backrest body 534 are pulled to the front, the pressing body 537 is aligned to the hollow opening of the corresponding buckling body 538, the pressing body 537 is pushed inwards, the arc-shaped convex edge of the pressing body 537 is subjected to the buckling force of the cavity wall of the corresponding buckling body 538, and is inwardly recessed, when the pressing body 537 touches the concave arc edges 531 on both sides of the corresponding buckling body 538, the buckling effect is realized, then the bolt on the rear end of the corresponding buckling, so that the bolt is movably connected with the long strip in the middle of the pressing body 537 through the thread, and the connection between the pressing body 537 and the buckling body 538 is further reinforced, so that the pressing body 537 and the buckling body 538 are not easy to fall off, and the backrest 534 can be firmly tied to the human body, the connecting balls 536 inside the backrest 534 are flexible and have mobility, so as to better fit the human body, reduce the discomfort caused by the backrest 534, thus, the neck and the back of the human body can be protected, and the waist is also provided with the connecting body which can share the force born by the shoulders, the back-carrying process is more labor-saving and is not easy to fall off, when the back-carrying body 534 is separated, the bolt fixing of the buckling body 538 is released, the pressing bodies 537 are pressed towards the two sides of the buckling body 538, the buckling body 538 is pulled out of the pressing bodies 537, then, the backrest body 534 is rotated to make the direction of the backrest body 534 consistent with that of the storage groove 532, and the backrest body 534 is moved to the storage groove 532 through the slide rail 533, so that the backrest body 534 is clamped on the storage groove 532, and the occupied area of the equipment is reduced.

While there have been shown and described what are at present considered the fundamental principles of the invention, the essential features and advantages thereof, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but rather, is capable of numerous changes and modifications in various forms without departing from the spirit or essential characteristics thereof, and it is intended that the invention be limited not by the foregoing descriptions, but rather by the appended claims and their equivalents.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a portable switch board which characterized in that: the structure of the robot comprises a machine body (1), a cavity opening (2), a closing door (3), rollers (4), an operating surface (5) and a mounting groove (6), wherein the side surface of the machine body (1) is connected with the closing door (3) in a clamping manner, the closing door (3) and the cavity opening (2) are of an integrated structure, the rollers (4) are arranged below the machine body (1), and the mounting groove (6) is formed in the operating surface (5);

the operation surface (5) is provided with a panel (50), a relying body (51), a braces device (52), a backrest body (53) and a handle (54), the relying body (51) is arranged on the panel (50), the braces device (52) is in sliding connection with the panel (50), the backrest body (53) is arranged in the middle of the panel (50), and the handle (54) is movably connected with the braces device (52) through a movable shaft.

2. The portable power distribution cabinet according to claim 1, characterized in that: rely on body (51) to the surface of outside to have inside sunken radian, the front end surface that relies on body (51) is equipped with soft cotton layer, rely on body (51) lower extreme to be square piece, its bottom is equipped with the bolt.

3. The portable power distribution cabinet according to claim 1, characterized in that: braces ware (52) are equipped with pivot (521), braces strip (522), extender (523), stabilize screw thread (524), the buckle body (525), spout (526), connecting rod (527), slider (528), pivot (521) and slider (528) sliding connection, strap back (522) and pivot (521) fixed connection, be equipped with extender (523) on strap back (522), stabilize screw thread (524) through screw thread and connecting rod (527) swing joint, spout (526) and connecting rod (527) structure as an organic whole, the buckle body (525) is installed on connecting rod (527).

4. A portable power distribution cabinet according to claim 3, characterized in that: the buckle body (525) is a block-shaped structure with circular arc corners, a spring is arranged at the rear end of the buckle body (525), and one section of the buckle body (525) provided with the spring is arranged inside the connecting rod (527).

5. A portable power distribution cabinet according to claim 3, characterized in that: extender (523) is equipped with fixed block (231), rotates handle (232), first smooth chamber (233), buckle board (234), second smooth chamber (235), buckle chamber (236), auxiliary shaft (237), back shaft (238), it passes through loose axle and buckle board (234) to rotate handle (232), it has back shaft (238) to rotate handle (232), the one end of back shaft (238) is established inside fixed block (231), buckle board (234) and auxiliary shaft (237) structure as an organic whole, install on second smooth chamber (235) auxiliary shaft (237), first smooth chamber (233) and second smooth chamber (235) sliding connection, buckle chamber (236) have been installed on first smooth chamber (233), buckle board (234) are established inside buckle chamber (236).

6. A portable switch board of claim 5 characterized in that: fixed block (231) distribute along the arc line equidistance of a circular slab for the slope strip, fixed block (231) are fixed through loose axle swing joint with the circular slab, the circular plate of fixed block (231) is fixed on buckle board (234), the arc piece of front end for leaning out of fixed block (231), the arc piece lower extreme of fixed block (231) is equipped with the spring coupling post.

7. The portable power distribution cabinet according to claim 1, characterized in that: the backrest body (53) is provided with a line body (531), a storage groove (532), a sliding rail (533), a back support body (534), a shell (535), a connecting ball (536), a pressing body (537), a mutual buckling body (538) and a transition shaft (539), the line body (531) is arranged on the back support body (534), the storage groove (532) is arranged on the shell (535), the sliding rail (533) is fixedly connected with the shell (535), the pressing body (537) and the mutual buckling body (538) are respectively arranged on the line body (531) at two sides of the back support body (534), the transition shaft (539) is in sliding connection with the sliding rail (533), the sliding rail (533) is movably connected with the back support body (534) through a connecting shaft, and the connecting ball (536) is arranged inside the back support body (534).

8. The portable power distribution cabinet according to claim 7, characterized in that: the utility model discloses a press the body (537) and detain the body (538) mutually and all be the plastic body, detain the body (538) mutually for hollow out construction, its both sides are equipped with sunken arc limit, the rear end of detaining the body (538) mutually is equipped with the rotation bolt, the both sides of pressing the body (537) are equipped with presses rectangular, the outside one side of pressing rectangular of pressing the body (537) is equipped with the protruding limit of arc.