CN214790739U

CN214790739U - Cylinder lamp

Info

Publication number: CN214790739U
Application number: CN202120404583.XU
Authority: CN
Inventors: 官世富; 余远彬; 陈鑫钊
Original assignee: Leedarson Lighting Co Ltd
Current assignee: Leedarson Lighting Co Ltd; Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-11-19
Anticipated expiration: 2031-02-24

Abstract

The utility model provides a down lamp, belonging to the technical field of lamps and lanterns, comprising a lamp body, a box body and a cover body; a light source module is arranged in the lamp body and connected with a first lead; a driving module is arranged in the box body and connected with a second lead; the cover body is fixedly arranged on the backlight surface of the lamp body; the box body and the cover body are provided with clamping structures, and the clamping structures are used for detachably connecting the cover body and the box body; the first lead penetrates through the lamp body, is positioned in the cover body and is aligned with the clamping structure, and the second lead penetrates through the box body and is connected with the clamping structure; after the cover body and the box body are connected through the clamping structure, the first conducting wire is in butt joint with the second conducting wire. The utility model provides a down lamp, through the joint structure realize the box body with cover body can dismantle the connection to make things convenient for lamp body or box body to separate to pull down and maintain, and can also make the light source module be connected with the drive module electricity fast convenient; the lead can be prevented from being in an external leakage and shielding-free state, and potential safety hazards are eliminated.

Description

Cylinder lamp

Technical Field

The utility model belongs to the technical field of lamps and lanterns, more specifically say, relate to a down lamp.

Background

In the current day that the LED technology is continuously developed, the arrangement of driving the light source module by the power source has become the mainstream, and in the specific use process, the driving module generally converts the alternating current supplied by the power grid, and connects the converted current to the channel light source module to realize the lighting function.

However, most of the down lamps applied in the market are integrated, that is, the driving part and the light source lamp body cannot be detached, if the driving part or the light source lamp body is damaged, the whole lamp needs to be detached, and then the driving part and the light source lamp body are detached for maintenance, so that the maintenance is inconvenient; or to replace the entire lamp, resulting in high replacement costs.

In addition, the down lamp is installed on the ceiling, and the lead for connecting the driving part and the light source lamp body is usually in an outer leakage state and a non-fixed state, so that potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a down lamp aims at solving the whole lamp maintenance that exists among the prior art and dismouting inconvenient and the wire is in the technical problem who leaks outward and do not have the stationary state.

In order to achieve the above object, the utility model adopts the following technical scheme: provided is a downlight, comprising:

the lamp body is internally provided with a light source module, and the light source module is connected with a first lead;

the box body is internally provided with a driving module, and the driving module is connected with a second lead; and

the cover body is fixedly arranged on the backlight surface of the lamp body;

the clamping structure is used for detachably connecting the cover body and the box body; the first lead penetrates through the lamp body, is positioned in the cover body and is aligned with the clamping structure, and the second lead penetrates through the box body and is connected with the clamping structure; after the cover body and the box body are connected through the clamping structure, the first conducting wire is in butt joint with the second conducting wire.

As another embodiment of the present application, the clamping structure includes:

the connecting arm is connected with the box body and extends out of the box body; the extending end of the connecting arm is provided with a downward protruding clamping block; the connecting arm is used for connecting the second lead;

the mounting groove is arranged on the top surface of the cover body and is used for being in butt joint with the extending end of the connecting arm; and

the clamping hole is arranged on the side wall of the cover body, is positioned below the mounting groove and is used for being connected with the clamping block;

the clamping block penetrates through the mounting groove and is clamped in the clamping hole; and after the clamping block is connected with the clamping hole, the second lead is in butt joint with the first lead.

As another embodiment of the application, the extending end of the connecting arm is further provided with a positioning block which protrudes downwards; the positioning block is arranged in the mounting groove, and the outer side wall of the positioning block is abutted against the inner wall of the mounting groove so as to limit the connecting arm to move relative to the mounting groove;

and the positioning block and/or the clamping block are/is provided with a through hole for the second lead to pass through.

As another embodiment of the present application, a bottom surface of the connecting arm is provided with a fixing ring for passing the second wire therethrough and for fixing the second wire.

As another embodiment of this application, be equipped with the extrusion piece on the terminal surface of the end that stretches out of linking arm, the extrusion piece be used for with the mounting groove is peripheral cover body inner chamber roof butt.

As another embodiment of the present application, a female connector is connected to an end of the first conductive line, and a male connector for mating with the female connector is connected to an end of the second conductive line.

As another embodiment of the present application, the lamp body includes:

the outer peripheral surface of the shading surface ring is connected with two symmetrically arranged spring arms, and the bottom surface of the shading surface ring is provided with a hanging hole;

the light source module is fixedly arranged in the light shading ring; and

the decorative surface ring is arranged on the bottom surface of the shading surface ring and is provided with a buckle connected with the hanging hole.

As another embodiment of the present application, the light source module includes:

a light source plate connected to the first wire;

the lens is positioned below the light source plate and clamped inside the shading surface ring; and

and the reflective paper is arranged in the lens.

As another embodiment of the present application, the lens includes:

the outer shell is cylindrical, the outer peripheral surface of the outer shell is provided with a clamping lug, and the clamping lug is used for clamping and abutting against the inner wall surface of the shading surface ring; and

a lens body disposed within the housing; the reflective paper is positioned in the shell and sleeved outside the lens body.

As another embodiment of this application, be equipped with two at least erection columns along its circumference interval in the cover body, the light source board reaches shading face ring connect have with the fastening bolt of erection column one-to-one, fastening bolt threaded connection be in the erection column.

The utility model provides a down lamp's beneficial effect lies in: compared with the prior art, the down lamp realizes the detachable connection of the box body and the cover body by arranging the clamping structure on the box body and the cover body, so that the lamp body or the box body can be detached conveniently for maintenance, and the problem of cost increase caused by the fact that any component of the lamp body part or the driving part is damaged and the whole body is replaced is avoided; in addition, after the cover body and the box body are connected through the clamping structure, the first conducting wire and the second conducting wire can be in butt joint, so that the light source module and the driving module are quickly and conveniently electrically connected; moreover, the first lead is covered by the cover body, and the second lead is shielded and fixed by the clamping structure, so that the lead is prevented from being in an external leakage state and a shielding-free state, and potential safety hazards are eliminated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a down lamp provided in an embodiment of the present invention;

fig. 2 is an explosion structure schematic diagram of a down lamp provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a clamping structure according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a lamp body and a cover body according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a box body according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a connecting arm of a clamping structure according to an embodiment of the present invention;

fig. 7 is a partially enlarged structural view of a connecting arm of the clamping structure according to an embodiment of the present invention;

fig. 8 is a first schematic structural diagram of a cover body according to an embodiment of the present invention;

fig. 9 is a second schematic structural diagram of the cover body according to the embodiment of the present invention;

FIG. 10 is a top view of FIG. 9;

fig. 11 is a schematic structural view of a shading surface ring according to an embodiment of the present invention;

fig. 12 is a schematic structural view of a decorative surface ring according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a light source module according to an embodiment of the present invention;

FIG. 14 is a schematic cross-sectional view taken along line A-A of FIG. 13;

fig. 15 is a schematic structural diagram of a lens according to an embodiment of the present invention.

In the figure: 1. a lamp body; 11. a shading face ring; 111. hanging holes; 112. positioning holes; 113. mounting holes; 12. a decorative surface ring; 121. buckling; 13. a spring arm; 14. a cotton ring is soaked; 15. a waterproof ring; 2. a box body; 21. an upper box body; 22. a lower box body; 3. a cover body; 31. mounting a column; 32. a positioning column; 33. a matching block; 4. a light source module; 41. a light source plate; 42. a lens; 421. a housing; 422. a lens body; 423. clamping the convex block; 43. reflective paper; 5. a driving module; 6. a first conductive line; 61. a female joint; 7. a second conductive line; 71. a male connector; 8. a clamping structure; 81. a connecting arm; 811. a clamping block; 812. positioning blocks; 813. a through hole; 814. a fixing ring; 815. extruding the block; 82. mounting grooves; 83. a clamping hole; 84. a support plate; 9. and fastening the bolt.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 5, a down lamp according to the present invention will be described. The down lamp comprises a lamp body 1, a box body 2 and a cover body 3. A light source module 4 is arranged inside the lamp body 1, and the light source module 4 is connected with a first lead 6; a driving module 5 is arranged in the box body 2, and the driving module 5 is connected with a second lead 7; the cover 3 is fixedly arranged on the backlight surface of the lamp body 1.

The box body 2 and the cover body 3 are provided with clamping structures 8, and the clamping structures 8 are used for detachably connecting the cover body 3 and the box body 2; the first lead 6 penetrates through the lamp body 1, is positioned in the cover body 3 and is aligned with the clamping structure 8, and the second lead 7 penetrates through the box body 2 and is connected with the clamping structure 8; after the cover body 3 and the box body 2 are connected through the clamping structure 8, the first conducting wire 6 is in butt joint with the second conducting wire 7.

The down lamp that this embodiment provided is before installing the ceiling, and the cover body 3 has been assembled on lamp body 1, and lamp body 1 and box body 2 can be installed alone, and after the installation was accomplished, rethread joint structure 8 realized the butt joint of cover body 3 and box body 2 to realize being connected of first wire 6 and second wire 7, light source module 4 is connected with drive module 5 promptly. Of course, the box body 2 and the cover body 3 can be assembled first, so that the down lamp can be installed after the light source module 4 and the driving module 5 are connected.

The utility model provides a can dismantle the connection between the drive module 5 of down lamp and the light source module 4, the user can replace drive module 5 and light source module 4 respectively according to the demand of oneself, and different drive module 5 can correspond different light source module 4 promptly.

It should be noted that the second wire 7 is not only connected to the clamping structure 8, but also located below the clamping structure 8, and the clamping structure 8 can shield the second wire 7.

Compared with the prior art, the down lamp provided by the utility model has the advantages that the detachable connection between the box body 2 and the cover body 3 is realized by arranging the clamping structure 8 on the box body 2 and the cover body 3, so that the lamp body 1 or the box body 2 can be detached conveniently, the light source module 4 or the driving module 5 can be maintained respectively, and the problem of cost increase caused by the replacement of the whole body due to the damage of any component of the lamp body part or the driving part is avoided; in addition, after the cover body 3 and the box body 2 are connected through the clamping structure 8, the first lead 6 and the second lead 7 can be butted, so that the light source module 4 and the driving module 5 are quickly and conveniently electrically connected; moreover, the cover body 3 is used for covering the first lead 6, and the clamping structure 8 is used for shielding and fixing the second lead 7, so that the lead is prevented from leaking and being in a shielding-free state, and potential safety hazards are eliminated.

In the embodiment of the present invention, as a specific implementation manner of the clamping structure 8, please refer to fig. 3 to 8, the clamping structure 8 includes a connecting arm 81, a mounting groove 82 and a clamping hole 83; the connecting arm 81 is connected with the case body 2 and extends to the outside of the case body 2; the extending end of the connecting arm 81 is provided with a downward convex clamping block 811; the connecting arm 81 is used for connecting the second wire 7; the mounting groove 82 is arranged on the top surface of the cover body 3 and is used for being in butt joint with the extending end of the connecting arm 81; the clamping hole 83 is formed in the side wall of the cover 3 and located below the mounting groove 82 for connecting with the clamping block 811.

The extension end of the connecting arm 81 is arranged in the mounting groove 82, so that the matching connection between the box body 2 and the cover body 3 is realized, specifically, the depth of the mounting groove 82 is matched with the length of the extension end of the connecting arm 81, so that the top of the cover body 3 and one surface of the connecting arm 81 of the box body 2, which is deviated from the extension end, form a flat surface, the flat surface is convenient to mount on a flat wall, and the clamping block 811 penetrates through the mounting groove 82 and is clamped in the clamping hole 83, so that the cover body 3 and the box body 2 are fixed in a clamping manner; after the clamping block 811 is connected with the clamping hole 83, the second wire 7 is butted with the first wire 6, so that the driving module 5 is electrically connected with the light source module 4 to realize the lighting function.

It should be noted that the positions of the connecting arm 81, the mounting groove 82 and the locking hole 83 can also be interchanged, that is, the connecting arm 81 is disposed on the cover 3, and the mounting groove 82 and the locking hole 83 are disposed on the case 2.

Mounting groove 82, joint hole 83 and linking arm 81 joint cooperation can realize the quick butt joint of lamp body 1 and box body 2, the light source module 4 and the quick assembly disassembly of drive module 5 of being convenient for.

Preferably, the female connector 61 is connected to the end of the first wire 6, and the female connector 61 is disposed against the mounting groove 82, as shown in fig. 10. A male connector 71 for mating with the female connector 61 is connected to an end of the second lead 7.

Referring to fig. 6 and 7, as a specific implementation manner of the clamping structure 8 according to the embodiment of the present invention, the extending end of the connecting arm 81 is further provided with a positioning block 812 protruding downward; the positioning block 812 is disposed in the mounting groove 82, and an outer sidewall of the positioning block 812 abuts against an inner wall of the mounting groove 82 to restrict the connecting arm 81 from moving relative to the mounting groove 82.

Specifically, the positioning block 812 is composed of four positioning plates, the four positioning plates are symmetrically arranged on the extending end of the connecting arm 81 in pairs to form an accommodating cavity, wherein one positioning plate on the extending end of the connecting arm 81 is connected with the clamping block 811, and the abutting surfaces of the positioning plates and the clamping block 811 are planes suitable for being matched with the inner wall of the box body 2 or the cover body 3; that is, when the inner surface of the box body 2 is a cylindrical surface, the abutting surfaces of the clamping block 811 and the positioning plate connected with the clamping block 811 are arc-shaped surfaces matched with the cylindrical surface, and when the inner surface of the box body 2 is a flat surface, the abutting surfaces of the clamping block 811 and the positioning plate connected with the clamping block 811 are flat surfaces matched with the flat surface.

Please refer to fig. 7, the positioning block 812 and/or the locking block 811 are provided with a through hole 813 for passing the second wire 7. Specifically, the through hole 813 may be separately disposed on the clamping block 811, may be separately disposed on the positioning block 812, or may be straddled between the clamping block 811 and the positioning block 812, so as to facilitate the passage of the second wire 7.

Referring to fig. 6, as a specific implementation manner of the connecting arm 81 according to the embodiment of the present invention, a fixing ring 814 is disposed on a bottom surface of the connecting arm 81, and the fixing ring 814 is used for passing the second conductive wire 7 and fixing the second conductive wire 7. The number of the fixing rings 814 may be one or more, so as to be suitable for fixing the second conductive wires 7, and prevent the second conductive wires 7 from sagging, which may cause the electrical connection between the first conductive wires 6 and the second conductive wires 7 to be disconnected, thereby affecting the implementation of the lighting function of the light source module 4.

In the clamping structure 8 of the present invention, please refer to fig. 6, an extruding block 815 is disposed on the end surface of the extending end of the connecting arm 81, and the extruding block 815 is used to abut against the top wall of the inner cavity of the cover 3 surrounding the mounting groove 82, so as to fix the relative positions of the box body 2 and the cover 3. In addition, the top wall of the inner cavity of the cover body 3 at the periphery of the mounting groove 82 can be provided with a matching block 33 which is matched with the extrusion block 815 in a clamping way, so that the clamping structure 8 is more stably fixed.

As a further improved embodiment, as shown in fig. 2 and 5, the box body 2 includes an upper box body 21 and a lower box body 22 butted with the upper box body 21; the connecting arm 81 can be arranged on the upper box body 21 or the lower box body 22, a labyrinth groove used for enabling the second lead 7 to be arranged in a bent shape is arranged in the upper box body 21 or in the lower box body 22, so that the requirement of the second lead 7 on tension can be met, the second lead 7 is surplus, and when the length of the needed second lead 7 is not enough, the second lead 7 bent and arranged in the labyrinth groove can be unfolded for the need from time to time.

In this embodiment, a support plate 84 may be provided at the bottom of the mounting groove 82 for supporting the second wire 7 to facilitate electrical connection between the first wire 6 and the second wire 7, and a through hole may be provided in the support plate 84 so that the engaging block 811 passes through the through hole to engage with the engaging hole 83 below the mounting groove 82.

Referring to fig. 2, as a specific embodiment of the present invention, the lamp body 1 includes a light-shielding ring 11, a light source module 4 and a decorative ring 12. The outer circumference of the shading surface ring 11 is connected with two symmetrically arranged spring arms 13, and the bottom surface is provided with a hanging hole 111, as shown in fig. 11; the light source module 4 is fixedly arranged in the shading face ring 11; the decorative ring 12 is disposed on the bottom surface of the light-shielding ring 11, and is provided with a buckle 121 connected to the hook hole 111, as shown in fig. 12.

Specifically, the light-shielding surface ring 11 includes a cylindrical portion having an inner cavity and an opening on a bottom surface, and an annular plate integrally formed on a periphery of the bottom surface of the cylindrical portion, the cylindrical portion is mainly used for mounting the light source module 4, and the annular plate is provided with a hanging hole 111. Preferably, the back surface of the shading surface ring 11, i.e. the top surface of the circular ring plate, is adhered with a foam ring 14.

Receive the restriction of shading face ring 11 self structure and with the demand of light source module 4 assembly, the bottom surface of ring board is not complete plane, possesses the groove structure, in order to shelter from the ring board, still installs decorative face ring 12 in the bottom surface of ring board to make down lamp have good outward appearance effect.

The decorative surface ring 12 and the shading surface ring 11 are connected by being clamped in the hanging hole 111 by the buckle 121. Preferably, the hanging hole 111 is an elongated hole extending along the circumferential direction of the light-shielding face ring 11, and includes a passing hole and a fixing hole communicating with the passing hole, and the width of the passing hole is greater than the width of the fixing hole. When the decoration surface ring 12 and the shading surface ring 11 are installed, the buckle 121 firstly passes through the through hole, then the decoration surface ring 12 is rotated, the buckle 121 is rotated to the fixing hole, the clamping surface of the buckle 121 can be abutted against the plate surface of the shading surface ring 11, as shown in fig. 4, and therefore the decoration surface ring 12 and the shading surface ring 11 are connected. When the decorative ring 12 is detached from the light-shielding ring 11, the decorative ring 12 is rotated in the opposite direction to separate the fastener 121 from the fixing hole and pass through the hole, and then the decorative ring 12 is pulled downward to separate the decorative ring 12 from the light-shielding ring 11.

Preferably, at least two sets of the hooking holes 111 and the hooks 121 are correspondingly arranged.

Referring to fig. 2, 13 and 14, as an embodiment of the present invention, the light source module 4 includes a light source plate 41, a lens 42 and a reflective paper 43. The light source board 41 is connected to one end of the first wire 6; the lens 42 is positioned below the light source plate 41 and clamped inside the shading surface ring 11; the reflective paper 43 is disposed within the lens 42.

The light source plate 41 is firstly connected with the shading surface ring 11 in an adhesive mode; the light source board 41 is provided with a plurality of light sources for emitting light. The lens 42 is used for refracting the light, and the reflective paper 43 is used for reflecting the refracted light again, so that the light is totally emitted from the lower light-emitting surface of the lens 42.

Specifically, the lens 42 includes a cylindrical housing 421 and a lens body 422, the housing 421 has a chucking protrusion 423 on an outer peripheral surface thereof, and the chucking protrusion 423 is used for chucking and abutting against an inner wall surface of the light-shielding surface ring 11; the lens body 422 is disposed within the housing 421; the reflective paper 43 is located in the housing 421 and is sleeved outside the lens 422.

The lens body 422 is mainly used for refracting light, and the housing 421 is used for arranging the lens body 422 and for connecting with the shading surface ring 11. When the lens 42 is mounted, the housing 421 is directly clamped in the inner cavity of the light-shielding surface ring 11, and since the outer peripheral surface of the housing 421 is provided with the clamping projection 423, as shown in fig. 15, the clamping projection 423 can be tightly abutted against the inner wall surface of the light-shielding surface ring 11, thereby ensuring stable fixation of the lens 42. Preferably, the chucking protrusions 423 are provided in plurality at equal intervals in the circumferential direction of the outer case 421.

The lens 42 is divided into the housing 421 and the lens body 422, so that on one hand, the assembly requirement with the shading surface ring 11 can be met, and on the other hand, the structure of the lens body 422 does not need to be changed, so that the lens body 422 can meet the transmission and refraction functions to the maximum extent.

Preferably, the inner wall of the casing 421 is further provided with a waterproof ring 15, as shown in fig. 2 and 14, the waterproof ring 15 is used for preventing water from entering the casing 421 and preventing water drops from entering the lens 42.

In the above embodiment, after the light source plate 41 is first connected to the light shielding surface ring 11 by gluing, the light source plate 41 may be connected to the light shielding surface ring 11 by bolting in order to ensure the stable connection of the light source plate 41. In addition, in order to save the installation space and the fixing bolt, the bolt may be passed through the light shielding face ring 11 and connected to the cover 3. In order to achieve the above object, please refer to fig. 2 and fig. 9, as a specific implementation manner of the embodiment of the present invention, at least two mounting posts 31 are disposed in the cover body 3 along the circumferential direction thereof at intervals, the light source plate 41 and the light shielding face ring 11 are connected with fastening bolts 9 corresponding to the mounting posts 31 one by one, and the fastening bolts 9 sequentially pass through the light source plate 41 and the light shielding face ring 11 and are screwed into the mounting posts 31. Specifically, the light source plate 41 and the light shielding ring 11 are provided with mounting holes 113 for passing the fastening bolts 9.

Use fastening bolt 9 to connect light source board 41, shading face ring 11 and the cover body 3, can reduce on the one hand and connect with the component, save installation space, on the other hand can also guarantee that cover body 3 is connected stably with light source board 41 to guarantee that first wire 6 is fixed stable.

Preferably, a plurality of positioning posts 32 are further disposed at intervals along the circumferential direction in the cover 3, and as shown in fig. 9, positioning holes 112 matched with the positioning posts 32 are disposed on both the light source plate 41 and the light shielding face ring 11.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Down lamp, its characterized in that includes:

the cover body is fixedly arranged on the backlight surface of the lamp body;

2. A downlight according to claim 1 wherein the snap-fit arrangement comprises:

3. A down lamp as claimed in claim 2, wherein the projecting end of the connecting arm is further provided with a positioning block projecting downwards; the positioning block is arranged in the mounting groove, and the outer side wall of the positioning block is abutted against the inner wall of the mounting groove so as to limit the connecting arm to move relative to the mounting groove;

4. A downlight according to claim 2 wherein the underside of the connecting arm is provided with a fixing ring for passing the second wire therethrough and for fixing the second wire.

5. A down lamp as claimed in claim 2, wherein a pressing block is provided on an end face of the protruding end of the connecting arm, the pressing block being adapted to abut against a top wall of the inner cavity of the housing at the periphery of the mounting groove.

6. The downlight of claim 1, wherein a female connector is connected to an end of the first wire, and a male connector for mating with the female connector is connected to an end of the second wire.

7. A downlight according to claim 1 wherein the lamp body comprises:

the light source module is fixedly arranged in the light shading ring; and

8. The downlight of claim 7, wherein the light source module comprises:

a light source plate connected to the first wire;

and the reflective paper is arranged in the lens.

9. A downlight according to claim 8 wherein the lens comprises:

10. The down lamp according to claim 8, wherein at least two mounting posts are arranged in the cover body at intervals along the circumferential direction of the cover body, the light source plate and the shading surface ring are connected with fastening bolts which correspond to the mounting posts one by one, and the fastening bolts are in threaded connection in the mounting posts.