阅读说明：本技术 一种保护罩壳 (Protective housing ) 是由 肖治祥 于 2020-11-30 设计创作，主要内容包括：本发明属于设备防护技术领域,公开了一种保护罩壳。该保护罩壳固定于被保护物的机架上,保护罩壳能沿预设方向安装或拆卸于机架并罩设被保护物,机架上设置有第一卡接部,保护罩壳内部设有第二卡接部,保护罩壳安装至机架时,第二卡接部卡接于第一卡接部,以将保护罩壳固定于机架。保护罩壳上设有允许第一外部工具插入保护罩壳内部的第一通孔,第一外部工具能够作动第一卡接部,以使第一卡接部脱离于第二卡接部。机架上还设置有能够被第一外部工具作动的遮挡部,以使遮挡部能遮挡或裸露第一通孔。该保护罩壳在实现了设备内部结构保密的同时,无需安排专人进行设备的管理,降低了人力和管理成本,并且方便了设备的维修以及零件的更换。(The invention belongs to the technical field of equipment protection and discloses a protective housing. This protection housing is fixed in the frame by the protection thing, and the protection housing can be followed and predetermine the direction installation or dismantle and establish in frame and cover by the protection thing, is provided with first joint portion in the frame, and the inside second joint portion that is equipped with of protection housing, when the protection housing is installed to the frame, second joint portion joint in first joint portion to be fixed in the frame with the protection housing. The protection housing is provided with a first through hole allowing a first external tool to be inserted into the protection housing, and the first external tool can actuate the first clamping portion so as to separate the first clamping portion from the second clamping portion. The rack is also provided with a shielding part which can be actuated by a first external tool so that the shielding part can shield or expose the first through hole. This protection housing when having realized that equipment inner structure is secret, need not to arrange the special messenger to carry out the management of equipment, has reduced manpower and administrative cost to the maintenance of equipment and the change of part have been made things convenient for.)

1. The utility model provides a protective housing, is fixed in on the frame (1) of protected thing, protective housing (2) can be along predetermineeing the direction installation or dismantle in frame (1) to the cover is established protected thing, its characterized in that:

a first clamping portion is arranged on the rack (1), a second clamping portion (25) is arranged inside the protective housing (2), and when the protective housing (2) is installed on the rack (1), the second clamping portion (25) is clamped with the first clamping portion so as to fix the protective housing (2) on the rack (1);

the protective cover shell (2) is provided with a first through hole (22) allowing a first external tool to be inserted into the protective cover shell (2), and the first external tool can actuate the first clamping portion so as to separate the first clamping portion from the second clamping portion (25);

the rack (1) is also provided with a shielding part (162) which can be actuated by the first external tool, so that the shielding part (162) can shield or expose the first through hole (22).

2. The protective enclosure according to claim 1, wherein a reset piece (163) is further provided on the frame (1), the reset piece (163) being configured to reset the shielding portion (162) so that the shielding portion (162) remains shielding the first through hole (22).

3. The protective case according to claim 2, characterized in that the protective case (2) is provided with a second through hole (23) allowing the insertion of a second external tool inside the protective case (2), the second external tool being able to actuate the shutter (162) so that the shutter (162) uncovers the first through hole (22).

4. The protective case according to claim 3, characterized in that said shutter (162) is hinged to the frame (1), the rotation axis of said shutter (162) being arranged between said first through hole (22) and said second through hole (23), the axis of said rotation axis being parallel to the axis of said first through hole (22).

5. The protective case according to claim 4, characterized in that the hinge axis is at a greater distance from the first through hole (22) than from the second through hole (23).

6. The protective case according to claim 3, characterized in that said protective case (2) is also provided with at least one third through hole (24), said third through hole (24) being arranged adjacent to said first through hole (22) and having the same shape and dimensions as said first through hole (22), said shielding portion (162) being able to shield said first through hole (22) and all said third through holes (24) together.

7. The protective casing according to claim 6, characterized in that the frame (1) comprises a baffle (13) for fixing the protective casing (2), the baffle (13) being provided with a fourth through hole (131) and a fifth through hole (132) in one-to-one correspondence with the first through hole (22) and the second through hole (23), the shielding portion (162) being provided on a side of the baffle (13) facing away from the protective casing (2).

8. The protective casing according to claim 7, characterized in that said baffle (13) is further provided with sixth through holes (133) in one-to-one correspondence with all said third through holes (24).

9. The protective case according to claim 1, characterized in that said second snap-in portion (25) is a hook slot, said first snap-in portion comprising:

the clamping hook (151), the said clamping hook (151) is hinged to the said stander (1);

the elastic piece (153) is arranged between the hook (151) and the rack (1) in a compressed mode, so that the hook (151) is kept at a clamping position abutted against the stop block (154), and when the protective housing (2) is installed to the rack (1) along the preset direction, the hook (151) can be clamped with the hook groove at the clamping position;

the first external tool can actuate the hook (151) to move the hook (151) away from the stop (154) and out of the hook slot.

10. The protective case according to claim 1, characterized in that said second snap-in portion (25) is a slot, said first snap-in portion comprising:

the inserting block is connected to the rack (1) in a sliding mode along the horizontal direction perpendicular to the preset direction;

the elastic piece (153) is arranged between the inserting block and the rack (1) in a compressed mode, so that the inserting block is kept at a clamping position abutted against the stop block (154), and when the protective cover shell (2) is installed to the rack (1) along the preset direction, the inserting block can be clamped with the inserting groove at the clamping position;

the first external tool is capable of actuating the insert to move the insert away from the stop (154) and out of engagement with the socket.

Technical Field

The invention relates to the technical field of equipment protection, in particular to a protective housing.

Background

With the progress and development of science and technology, each factory can research a method for solving the problems or design and manufacture equipment capable of solving the problems according to the problems of a production line in the production process, so that the production efficiency and the quality of products are improved. In order to protect the equipment, to increase the service life of the equipment and to make the equipment more aesthetically pleasing, a protective enclosure is often provided on the exterior of the equipment.

However, for some newly developed core devices, since the protective case can be detached at will by an external tool, the structure and core technology of the device may be leaked. At present, in order to prevent the core technology in the equipment from leaking, the equipment is usually put into a box body to be locked, and a specially-assigned person is arranged to manage the equipment, so that the manpower is wasted, and the management cost is increased.

If the protective casing of the equipment is fixed with the frame of the equipment in an undetachable way and a door lock are arranged on the protective casing, the core technology in the equipment is prevented from leaking out through the door and the door lock. If there is the part to change the maintenance in the equipment, because the protective housing can't dismantle, when needing to use outside work piece to change or the inside part of maintenance equipment, only can pass the door opening and carry out the maintenance of equipment, operating space is minimum, and the maintenance process is extremely inconvenient.

Therefore, there is a need to solve the above problems.

Disclosure of Invention

The invention aims to provide a protective housing, which solves the problems of difficult maintenance, labor waste and high management cost while preventing other people from randomly disassembling and checking the internal structure of equipment.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a protection housing, is fixed in the frame by the protection thing, protection housing can be along predetermineeing the direction installation or dismantle in the frame, and the cover is established by the protection thing, be provided with first joint portion in the frame, the inside second joint portion that is equipped with of protection housing, protection housing installs extremely during the frame, second joint portion joint in first joint portion, in order to incite somebody to action protection housing is fixed in the frame. The protective cover shell is provided with a first through hole allowing a first external tool to be inserted into the protective cover shell, and the first external tool can actuate the first clamping portion to enable the first clamping portion to be separated from the second clamping portion. The rack is also provided with a shielding part which can be actuated by the first external tool, so that the shielding part can shield or expose the first through hole.

Preferably, a reset piece is further disposed on the rack, and the reset piece is configured to reset the shielding portion, so that the shielding portion keeps shielding the first through hole.

Preferably, the protective cover casing is provided with a second through hole allowing a second external tool to be inserted into the protective cover casing, and the second external tool can actuate the shielding portion so that the shielding portion exposes the first through hole.

Preferably, the shielding portion is hinged to the frame, a hinge shaft of the shielding portion is disposed between the first through hole and the second through hole, and an axis of the rotating shaft is parallel to an axis of the first through hole.

Preferably, a distance between the hinge shaft and the first through hole is greater than a distance between the hinge shaft and the second through hole.

Preferably, the protective housing is further provided with at least one third through hole, the third through hole is arranged close to the first through hole and has the same shape and size as the first through hole, and the shielding portion can shield the first through hole and all the third through holes.

Preferably, the frame includes the baffle that is used for fixing the protection housing, the baffle be provided with first through-hole with fourth through-hole and fifth through-hole of second through-hole one-to-one, the shielding part set up in the baffle deviates from one side of protection housing.

Preferably, the baffle is further provided with sixth through holes corresponding to all the third through holes one to one.

Preferably, second joint portion includes the hook groove, first joint portion includes trip, elastic component and dog, the trip articulate in the frame, the elastic component set up compressedly in the trip with between the frame, so that the trip keep in with the block position of dog butt, work as the protection housing is followed predetermine the direction installation extremely during the frame, the trip can with be in the block position the hook groove joint. The first external tool can actuate the hook so that the hook moves away from the stop block and is separated from the hook groove.

Preferably, second joint portion includes the slot, first joint portion is including inserted block, elastic component and dog, the inserted block is along the perpendicular to the horizontal direction sliding connection of predetermineeing the direction in the frame, the elastic component compressed set up in the inserted block with between the frame, so that the inserted block keep in with the block position of dog butt, work as the protection casing is followed predetermine the direction and install extremely during the frame, the inserted block can with be in the block position the slot joint. The first external tool can actuate the insert to move the insert away from the stop and away from the slot.

The invention has the beneficial effects that: through at the protection casing along predetermineeing the direction installation extremely during the frame, second joint portion joint in first joint portion to shelter from first through-hole through shielding part, so that the protection casing still keeps the lock-out state after dismantling down the installation screw, when equipment needs maintenance, can carry out the unblock of first joint portion and second joint portion through outside instrument by the designer who knows its inner structure, when having realized that equipment inner structure is secret, need not to arrange the special messenger and carry out the management of equipment, manpower and administrative cost have been reduced, and the maintenance of equipment and the change of part have been made things convenient for.

Drawings

FIG. 1 is a schematic view of a protective enclosure mounted to a rack in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of the protective enclosure of FIG. 1;

FIG. 3 is a schematic view of the interior of the protective enclosure of FIG. 2;

FIG. 4 is a schematic view of the protected enclosure of FIG. 1;

fig. 5 is a bottom view of fig. 1.

In the figure:

1. a frame; 11. a side plate; 111. a first insertion groove; 112. a second insertion groove; 12. a rear floor; 13. a baffle plate; 131. a fourth via hole; 132. a fifth through hole; 133. a sixth through hole; 134. a hinge hole; 14. a connecting plate; 151. a hook is clamped; 152. a first bolt; 153. an elastic member; 154. a stopper; 161. a second bolt; 162. a shielding portion; 163. a reset member;

2. a protective housing; 211. a limiting block; 212. a first slot; 213. a second slot; 22. a first through hole; 23. a second through hole; 24. a third through hole; 25. a second clamping part; 251. and (6) positioning a groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example one

This embodiment provides a protection housing to when can preventing that other people from dismantling at will and looking over equipment inner structure, solve the maintenance difficulty, extravagant manpower and the high problem of administrative cost.

In order to solve the above problems, the protective housing 2 may be fixed to the frame 1 of the protected object by screws, and the protective housing 2 is limited to be mounted or dismounted to the frame 1 only along a preset direction by structures such as sliding, plugging and the like which are mutually adapted to the frame 1, and can cover the protected object. As shown in fig. 3 and 4, in the present embodiment, the rack 1 includes a pair of side plates 11, a rear bottom plate 12 and a baffle 13, the pair of side plates 11 are respectively fixed to two sides of the rear bottom plate 12, the baffle 13 is disposed on top of the pair of side plates 11 and the rear bottom plate 12, and the pair of side plates 11 and the rear bottom plate 12 are respectively fixed to the baffle 13, so as to fix the protected object on the rack 1 and enhance the stability of the rack 1. The bottom of each side plate 11 can be provided with an extension part in the direction departing from the rear bottom plate 12, so that the contact area of the rack 1 contacting the ground is increased, and the rack 1 is more stable. The protective housing 2 may include a pair of side walls, a top wall, a rear side wall and a front side wall, so that the protective housing 2 can cooperate with the frame 1 to cover the protected object.

In order to enable the protective cover 2 to be mounted or dismounted on or from the rack 1 only along the vertical direction, a first insertion groove 111 capable of accommodating a pair of side walls of the protective cover 2 to be inserted along the vertical direction may be provided on a side where the extending portions of the pair of side plates 11 are away from each other, a second insertion groove 112 may be respectively vertically provided on a side opposite to the pair of extending portions, and a limiting block 211 capable of being inserted into the second insertion groove 112 along the vertical direction may be respectively provided in the side walls of the pair of protective cover 2, so that the protective cover 2 may be mounted or dismounted on or from the rack 1 only along the vertical direction.

In order to fix the protective cover 2 to the frame 1, mounting threaded holes may be provided in the extension portions of the rear bottom plate 12 and the pair of side plates 11, and a first slot hole 212 extending in the vertical direction may be provided at a position corresponding to a pair of side walls of the protective cover 2, and a second slot hole 213 extending in the vertical direction may be provided at a position corresponding to a rear side wall, respectively, so as to fix the protective cover 2 to the frame 1 by screws.

In order to prevent that other personnel are for after unscrewing the bolt, can directly dismantle protection housing 2 in frame 1 to lead to being divulged a secret by the protection thing, can also be provided with first joint portion in frame 1, protection housing 2 is inside can be equipped with second joint portion 25, and protection housing 2 is when installing frame 1, and second joint portion 25 can joint in first joint portion, in order to be fixed in frame 1 with protection housing 2 on. The protective housing 2 may be provided with a first through hole 22 allowing a first external tool to be inserted into the protective housing 2, and the first external tool may actuate the first engaging portion to disengage the first engaging portion from the second engaging portion 25. The frame 1 may further include a shielding portion 162 that can be actuated by a first external tool, so that the shielding portion 162 can shield or expose the first through hole 22.

Install extremely along predetermineeing the direction at protecting sheathing 2 during frame 1, through second joint portion joint in first joint portion to shelter from first through-hole 22 through shielding part 162, so that protecting sheathing 2 still can keep the locking state after the screw under the dismantlement. When equipment needs to be maintained, the personnel who know its inner structure can carry out the unblock of first joint portion and second joint portion 25 through first external tool, when having realized that equipment inner structure is secret, need not to arrange the special messenger and carry out the management of equipment, has reduced manpower and administrative cost to the maintenance of equipment and the change of part have been made things convenient for.

Specifically, please refer to fig. 1 to 5, in order to set a locking mechanism in the vertical direction, so as to keep the protection cover casing 2 in a locked state after the screw is detached, the connecting plate 14 may be fixedly connected to one side of the baffle 13 far away from the rear base plate 12, and a first clamping portion is disposed on one side of the connecting plate 14, a second clamping portion 25 is disposed in the top wall of the protection cover casing 2, when the protection cover casing 2 is mounted to the rack 1 in the vertical direction, the second clamping portion 25 can be clamped to the first clamping portion, so that the protection cover casing 2 is locked to the rack 1 in the vertical direction, so as to fix the protection cover casing 2 to the rack 1.

In order to make the protection housing 2 can be dismantled in frame 1, the roof of protection housing 2 can be provided with first through-hole 22, and first through-hole 22 is close to second joint portion 25, and maintenance person can insert first through-hole 22 through the screwdriver of dismantling the screw, and the screwdriver inserted in protection housing 2 inside can actuate first joint portion and break away from second joint portion 25 to make protection housing 2 can follow vertical direction and dismantle in frame 1.

It will be appreciated that the first external tool may be a screwdriver to remove a screw, or may be an allen wrench or other tool. The actuating manner is various, and depending on the actual structure of the first engaging portion and the second engaging portion 25, the manner of actuating the first engaging portion by the first external tool includes, but is not limited to, deformation or movement of the first engaging portion that can be separated from the second engaging portion 25 by applying force to the first engaging portion, such as turning, translating, bending, etc., and is not limited herein. The actuation in this embodiment means an action to mean that one object moves another object.

In order to prevent other people from observing the structure inside the protective casing 2 through the first through hole 22, the shielding portion 162 may be disposed at the position of the baffle 13 close to the first through hole 22, the shielding portion 162 may shield the first through hole 22, and when the maintenance personnel need to detach the protective casing 2, the shielding portion 162 may be pushed open by a screwdriver, so that the screwdriver passes through the first through hole 22 and is inserted into the protective casing 2.

Further, in order that the shielding portion 162 can be restored to shield the first through hole 22 when the screwdriver is pulled out of the first through hole 22, a reset piece 163 may be disposed at a position of the shielding portion 162 on the baffle 13 when the shielding portion 162 is in the shielding state, the reset piece 163 may be a spring steel sheet, when the screwdriver is pushed open the shielding portion 162, the spring steel sheet is pushed open together with the shielding portion 162, so that the spring steel sheet is elastically deformed, and when the screwdriver is taken out, the spring steel sheet in the elastic deformation is to be restored to the original state, so that the shielding portion 162 is restored to shield the first through hole 22.

Because only one through hole is arranged on the protective housing 2 and can be easily found by other people in the dismounting process, further, in order to increase the probability that the protective housing 2 can be dismounted by other people, a second through hole 23 which allows a second external tool to be inserted into the protective housing 2 can be arranged on the protective housing 2, and after the second external tool actuates the shielding part 162, the shielding part 162 can expose the first through hole 22 on the protective housing 2, so that the first external tool can be inserted into the first through hole 22, and the first external tool actuates the first clamping part to be separated from the second clamping part 25.

Further, in order to optimize the layout of the first through hole 22 and the second through hole 23 and facilitate the maintenance personnel to unlock the first clamping portion and the second clamping portion 25, the shielding portion 162 can be hinged to the baffle 13 through the second bolt 161, the hinge hole 134 of the shielding portion 162 can be arranged between the first through hole 22 and the second through hole 23, the shielding portion 162 can rotate along the axis of the hinge hole 134, that is, the axis of the hinge hole 134 is the rotating shaft of the shielding portion 162, the axis of the rotating shaft is parallel to the axis of the first through hole 22, and the shielding portion 162 can expose a part of the second through hole 23, so that the second external tool can be inserted into the second through hole 23, and when the second external tool actuates the shielding portion 162 to rotate along the first direction, the shielding portion 162 shielding the first through hole 22 can rotate along the direction opposite to the first through hole 22, so as to expose the first through hole 22.

Further, in order to facilitate the maintenance personnel to unlock the first clamping portion and the second clamping portion 25, the distance between the hinge shaft and the first through hole 22 is greater than the distance between the hinge shaft and the second through hole 23, when the maintenance personnel uses the second external tool, only the shielding portion 162 needs to be slightly actuated to rotate along the first direction, and the shielding portion 162 shielding the first through hole 22 rotates along the direction opposite to the first direction by a larger range, so that the first through hole 22 is exposed.

Further, in order to increase the difficulty that other personnel dismantle the protection housing 2, the protection housing 2 can also be equipped with at least one third through-hole 24, and the third through-hole 24 is close to first through-hole 22 setting and is the same with the shape and the size of first through-hole 22, and shielding part 162 can shelter from first through-hole 22 and all third through-holes 24 in the lump to when other personnel dismantle the protection housing 2, puzzle other personnel, increase the difficulty of dismantling the protection housing 2.

Further, in order to reduce the range of movement of the first and second external tools into the protective housing 2, as shown in fig. 4, the baffle 13 may extend toward the first and second through holes 22 and 23, and a fourth through hole 131 is provided at a position corresponding to the first through hole 22 and a fifth through hole 132 is provided at a position corresponding to the second through hole 23, and the shielding portion 162 is provided at a side of the baffle 13 away from the protective housing 2, and by correspondingly adding the fourth and fifth through holes 131 and 132 at the first and second through holes 22 and 23, the depths of the first and second through holes 22 and 23 are increased, so as to limit the range of movement of the first and second external tools into the protective housing 2, and increase the difficulty that other persons can detach the protective housing 2.

Borrow by above-mentioned structure, in order to further increase the degree of difficulty that other personnel dismantled protection housing 2, baffle 13 can also be provided with the sixth through-hole 133 with all third through-holes 24 one-to-one to puzzlement other personnel, increase the degree of difficulty that other personnel dismantled protection housing 2.

In order to improve the strength of the second clamping portion 25 clamped in the first clamping portion, in this embodiment, the second clamping portion 25 can be a hook groove, and can set a positioning groove 251 on the top wall of the protective housing 2, so as to insert the hook groove into the positioning groove 251, and firmly weld the hook groove in the protective housing 2. The first clamping portion may include a clamping hook 151, an elastic member 153 and a stop block 154, the clamping hook 151 may be hinged to one side of the connecting plate 14 close to the fourth through hole 131 through a first bolt 152, the elastic member 153 is compressively disposed between the clamping hook 151 and the rack 1, and the clamping hook 151 is kept in a vertical posture through the elastic member 153 and the stop block 154, so that the clamping hook 151 is kept in a clamping position abutting against the stop block 154. The top of trip 151 is provided with the spigot surface, when protection casing 2 is installed to frame 1 along predetermineeing the direction, the hook groove pushes away the spigot surface of trip 151, the spigot surface can turn into the torque that makes trip 151 deviate from the block position deflection with the vertical thrust that receives, trip 151 pushes away to elastic component 153 this moment, make elastic component 153 take place elastic deformation, push away when the hook groove to support the spigot surface and slide to the block position, trip 151 resumes to the block position under the drive of the elasticity that elastic component 153 resumeed initial position, and the joint in the hook groove, thereby lock protection casing 2 in frame 1, so that other personnel are when rocking protection casing 2, trip 151 can block in the hook groove firmly.

When the maintenance personnel detach the protective cover 2, the second through hole 23 and the fifth through hole 132 can be sequentially inserted through the second external tool, and the shielding portion 162 is actuated, so that the shielding portion 162 exposes the fourth through hole 131 and the first through hole 22, at this time, the first through hole 22 and the fourth through hole 131 are sequentially inserted through the first external tool, and the hook 151 is actuated, so that the hook 151 deflects and moves in a direction away from the stopper 154, so as to disengage from the hook groove.

It is understood that, in the present embodiment, since the protective casing 2 is vertically installed on or removed from the rack 1, in other embodiments, the protective casing 2 may also be installed on or removed from the rack 1 in other predetermined directions, which is not limited herein.

Example two

The present embodiment is different from the first embodiment in that the first and second engaging portions 25 have different structures.

Specifically, in this embodiment, the second clamping portion 25 may be a slot, the first clamping portion includes an insertion block, an elastic member 153 and a stop block 154, the insertion block may be slidably connected to the baffle 13 along any horizontal direction perpendicular to the vertical direction, the elastic member 153 may elastically deform along the sliding direction of the insertion block and be compressively disposed between the insertion block and the baffle 13, the stop block 154 is disposed at the engaging position, such that the insertion block abuts against the stop block 154, and the insertion block may be retained at the engaging position. The top of inserted block is provided with the spigot surface, when protecting casing 2 along predetermineeing the direction installation to frame 1, the slot can push away the spigot surface of support inserted block, the spigot surface can turn into the vertical thrust that receives and make the inserted block slide along the direction that deviates from the block position, the inserted block pushes away elastic component 153 this moment, make elastic component 153 take place elastic deformation, when the slot pushes away the spigot surface and slides to the block position, the inserted block resumes to the block position under the drive of the elasticity that elastic component 153 resumeed initial position, and the joint is in the slot.

When the maintenance personnel disassemble the protective cover 2, the second through hole 23 and the fifth through hole 132 can be sequentially inserted through the second external tool, and the shielding portion 162 is actuated, so that the shielding portion 162 exposes the fourth through hole 131 and the first through hole 22, at this time, the first through hole 22 and the fourth through hole 131 are sequentially inserted through the first external tool, and the insert block can be actuated, so that the insert block slides in the direction away from the stopper 154 to be separated from the slot.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.