阅读说明：本技术 一种便于安装的电子开关及其安装方法 (Electronic switch convenient to install and installation method thereof ) 是由 王健 于 2021-08-08 设计创作，主要内容包括：本发明涉及电子开关领域,具体的说是一种便于安装的电子开关及其安装方法,包括固定框,固定框的内部设置有安装机构,安装机构的内部设置有接线机构,接线机构的内部卡接有开关机构,安装机构的开口处设置有固定机构,安装机构的外部设置有触发机构,从安装盒的外壁上的两个插接孔的开口处按压两个圆柱,通过圆柱将套筒和安装盒固定在一起防止开关座与固定座分离,然后将外壳盖卡接在安装盒的开口外壁上,使弧块卡接在套筒内部,然后转动外壳盖,通过外壳盖带动弧块转动,弧块转动时弧面挤压与圆柱上的斜面,进而使圆柱向两端移动,使圆柱上的凸块卡接在对应的凹槽内部,进而使外壳盖固定在安装盒上,无需工具即可快速完成安装。(The invention relates to the field of electronic switches, in particular to an electronic switch convenient to install and an installation method thereof, and the electronic switch comprises a fixed frame, wherein an installation mechanism is arranged inside the fixed frame, a wiring mechanism is arranged inside the installation mechanism, a switching mechanism is clamped inside the wiring mechanism, a fixing mechanism is arranged at an opening of the installation mechanism, a trigger mechanism is arranged outside the installation mechanism, two cylinders are pressed from openings of two inserting holes on the outer wall of an installation box, the sleeve and the installation box are fixed together through the cylinders to prevent a switch base from being separated from a fixed seat, then a shell cover is clamped on the outer wall of the opening of the installation box to clamp an arc block inside the sleeve, then the shell cover is rotated to drive the arc block to rotate through the shell cover, an arc surface extrudes an inclined plane on the cylinder when the arc block rotates, the cylinder moves towards two ends to clamp a convex block on the cylinder inside a corresponding groove, and then make the shell lid fix on the mounting box, need not the instrument and can accomplish the installation fast.)

1. The electronic switch convenient to install is characterized by comprising a fixing frame (1), wherein an installing mechanism (2) is arranged inside the fixing frame (1), a wiring mechanism (3) is arranged inside the installing mechanism (2), a switch mechanism (4) is clamped inside the wiring mechanism (3), a fixing mechanism (5) is arranged at an opening of the installing mechanism (2), and a triggering mechanism (6) is arranged outside the installing mechanism (2); the installation mechanism (2) comprises an installation box (21), the installation box (21) is connected in the fixed frame (1) in a clamped manner, two strip-shaped holes (22) are symmetrically formed in the inner wall of the installation box (21), two first rotating shafts (23) are fixedly connected in the strip-shaped holes (22), two first rotating shafts (23) are respectively and rotatably connected in two first rotating holes (24), two first rotating holes (24) are respectively formed in the surfaces of one ends of two rotating rods (25), the other ends of the two rotating rods (25) are respectively and fixedly connected with an inclined block (26), two inclined blocks (26) are respectively and fixedly connected with a push rod (27) on the side wall close to the inside of the installation box (21), a plurality of strip-shaped clamping strips (28) are respectively and fixedly connected on the side wall of the other side of the two inclined blocks (26), and a plurality of strip-shaped clamping strips (28) are respectively connected in a plurality of strip-shaped grooves (29), the strip-shaped grooves (29) are respectively formed in the inner walls of the two sides of the mounting groove (210), and the mounting groove (210) is formed in the wall surface (211); the wiring mechanism (3) comprises a fixing seat (31), the fixing seat (31) is fixedly connected to the center of the inner wall of the mounting box (21), clamping grooves (32) are formed in two sides of the fixing seat (31), two triangular clamping strips (33) are symmetrically and fixedly connected to the inner portions of the two clamping grooves (32), wires (34) are clamped in the two clamping grooves (32), sliding grooves (35) are formed in the inner walls of the upper ends of the two clamping grooves (32), jacks (36) are formed in the inner walls of the top ends of the two sliding grooves (35), L-shaped guide rods (37) are inserted into the inner portions of the two jacks (36), circular grooves (38) are formed in the inner walls of the sliding grooves (35), springs (39) are clamped in the circular grooves (38), and the other ends of the springs (39) are in contact with the side walls, far away from the jacks (36), of the L-shaped guide rods (37), and a limiting slot (310) is formed in the surface of the lower end of the fixed seat (31).

2. An electronic switch of claim 1, wherein: switch mechanism (4) include sleeve (41), sleeve (41) joint is on the inner wall of mounting box (21), two dead levers of symmetry fixedly connected with (42), two on the inner wall of sleeve (41) the same switch seat (43) of the other end fixedly connected with of dead lever (42), symmetry fixedly connected with break button (44) and closed button (45) on one side lateral wall of fixing base (31) is kept away from in switch seat (43), fixedly connected with conducting block (46) on another some lateral wall of switch seat (43), spacing post of fixedly connected with (47) on the lower extreme lateral wall of switch seat (43), the other end fixedly connected with conical head (48) of spacing post (47).

3. An electronic switch of claim 1, wherein: the fixing mechanism (5) comprises two inserting holes (51), the two inserting holes (51) are symmetrically formed in the inner walls of the two sides of the opening of the mounting box (21), cylinders (52) are inserted into the two inserting holes (51), the other ends of the cylinders (52) are inserted into the two through holes (53), the two through holes (53) are symmetrically formed in the side walls of the two sides of the sleeve (41), an inclined plane (54) is formed in one end, close to the sleeve (41), of each cylinder (52), sliders (55) are fixedly connected to the inner portions of the inserting holes (51), the sliders (55) are slidably connected into the two sliding grooves (56) respectively, the sliding grooves (56) are formed in the surfaces of the two cylinders (52), and the other ends of the cylinders (52) are fixedly connected with bumps (57).

4. An electronic switch of claim 1, wherein: trigger mechanism (6) are including outer cover (61), outer cover (61) joint is on the opening outer wall of mounting box (21), the center department of outer cover (61) fixedly cup joints trapezoidal section of thick bamboo (62), fixedly connected with second pivot (63) on the inner wall of trapezoidal section of thick bamboo (62), second pivot (63) are rotated and are connected inside second commentaries on classics hole (64), the second is changeed hole (64) and is seted up at shift knob (65) on the surface, shift knob (65) joint is inside trapezoidal section of thick bamboo (62), all set up fluted (66) on the both sides inner wall of outer cover (61), two arc pieces (67) of symmetry fixedly connected with on the inner wall of outer cover (61).

5. An electronic switch of claim 4, wherein: the two arc blocks (67) correspond to the two cylinders (52) respectively.

6. A method of using an electronic switch as claimed in any one of claims 1 to 5 for ease of installation, wherein: the method comprises the following steps: the mounting box structure comprises a first step, a mounting box (21) is connected to the inside of a mounting groove (210) in a clamped mode through a fixing frame (1), a sleeve (41) is connected to the inside of the mounting box (21) in a clamped mode, then the sleeve (41) is pushed to move towards the inside of the mounting box (21), a push rod (27) is extruded through the outer wall of the sleeve (41), the push rod (27) pushes an inclined block (26) to move after being pushed, the inclined block (26) drives a rotating rod (25) to rotate, the rotating rod (25) is limited by a first rotating shaft (23) to drive the inclined block (26) to be close to the inner wall of the mounting groove (210), strip-shaped clamping strips (28) on the inclined block (26) are connected with strip-shaped grooves (29) in a clamped mode, and the inclined block (26) is fixed to the inside of the mounting groove (210);

secondly, when the sleeve (41) moves towards the inside of the mounting box (21), the fixing rod (42) is driven to move, the fixing rod (42) drives the switch seat (43) to move, the switch seat (43) drives the conductive block (46) to press one end, located inside the insertion hole (36), of the L-shaped guide rod (37), the L-shaped guide rod (37) is further enabled to extrude a lead (34) inside the triangular clamping strip (33), the lead (34) is further connected with the conductive block (46), and the switch seat (43) is enabled to be communicated with a circuit;

thirdly, two columns (52) are pressed from openings of two inserting holes (51) in the outer wall of the mounting box (21), the two columns (52) are inserted into the drinking through hole (53), the sleeve (41) and the mounting box (21) are fixed together through the columns (52), and the switch seat (43) is prevented from being separated from the fixed seat (31);

the fourth step, with outer cover (61) joint on the opening outer wall of mounting box (21), make arc piece (67) joint inside sleeve (41), then rotate outer cover (61), drive arc piece (67) through outer cover (61) and rotate, arc extrusion and inclined plane (54) on cylinder (52) when arc piece (67) rotate, and then make cylinder (52) remove to both ends, make lug (57) joint on cylinder (52) inside recess (66) that correspond, and then make outer cover (61) fix on mounting box (21), need not the instrument and can accomplish the installation fast.

Technical Field

The invention relates to the field of electronic switches, in particular to an electronic switch convenient to install and an installation method thereof.

Background

The electronic switch is an operation unit for realizing the on-off of a circuit by utilizing an electronic circuit and a power electronic device, and at least comprises a controllable electronic driving device, such as a thyristor, a transistor, a field effect transistor, a controllable silicon, a relay and the like. However, in the practical use process, the electronic switch mainly refers to a touch switch, an inductive switch, a voice-operated switch, a wireless switch and other wall switches.

The current domestic lighting device uses electronic switch control mostly, but current electronic switch all needs use tools to fix when connecting wire and erection switch, if the instrument that does not correspond just can't install electronic switch when the resident family needs to be changed electronic switch, and current electronic switch need just can be with whole fixing inside the wall body through the screw, because the wall has received the damage when secondary installation electronic switch, and then can lead to the insecure of electronic switch installation, can lead to electronic switch to drop.

Disclosure of Invention

The invention provides an electronic switch convenient to install, and aims to solve the problems that most household lighting devices in the prior art are controlled by electronic switches, but the existing electronic switches are fixed by tools when connecting wires and installing the switches, the electronic switches cannot be installed without corresponding tools when residents need to replace the electronic switches, the existing electronic switches can be integrally fixed inside a wall body by screws, and the electronic switches are installed secondarily because the wall surface is damaged, so that the electronic switches are installed insecurely and can possibly fall off.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an electronic switch convenient to installation, includes fixed frame, the inside of fixed frame is provided with installation mechanism, installation mechanism's inside is provided with wiring mechanism, wiring mechanism's inside joint has switching mechanism, installation mechanism's opening part is provided with fixed establishment, installation mechanism's outside is provided with trigger mechanism.

Specifically, installation mechanism includes the mounting box, the mounting box joint is inside fixed frame, two bar holes, two have been seted up to the symmetry on the inner wall of mounting box the first pivot of the equal fixedly connected with in inside in bar hole, two first pivot rotates respectively and connects inside two first commentaries on classics holes, two first pivot is seted up respectively on the one end surface of two dwangs, two the equal fixedly connected with sloping block of the other end of dwang, two equal fixedly connected with push rod, two on the sloping block is close to the inside one side lateral wall of mounting box equal fixedly connected with a plurality of bar card strips, it is a plurality of on the opposite side lateral wall of sloping block equal fixedly connected with a plurality of bar card strips difference joint is inside a plurality of bar inslot, and is a plurality of the bar groove is seted up respectively on the both sides inner wall of mounting groove, the mounting groove is seted up on the wall.

Specifically, wiring mechanism includes the fixing base, fixing base fixed connection is in the inner wall center department of mounting box, the joint groove has all been seted up to the both sides of fixing base, two equal symmetrical fixedly connected with two triangle holding strips in inside in joint groove, two the equal joint in inside in joint groove has the wire, two the sliding tray has all been seted up on the upper end inner wall in joint groove, two the jack has all been seted up on the top inner wall in sliding tray, two the inside of jack has all been pegged graft and has been had L shape guide arm, the circular slot has been seted up on the inner wall of sliding tray, the inside joint in circular slot has the spring, the other end and the L shape guide arm of spring keep away from one side lateral wall contact of jack, the lower extreme of fixing base has seted up spacing slot on the surface.

Specifically, the on-off mechanism includes the sleeve, the sleeve joint is on the inner wall of mounting box, two dead levers of symmetry fixedly connected with on the telescopic inner wall, two the same switch seat of other end fixedly connected with of dead lever, symmetry fixedly connected with break button and closed button on the one side lateral wall of fixing base are kept away from to the switch seat, fixedly connected with conducting block on another some lateral wall of switch seat, the spacing post of fixedly connected with on the lower extreme lateral wall of switch seat, the other end fixedly connected with conical head of spacing post.

Specifically, fixed establishment includes two spliced eye, two spliced eye symmetry is seted up on the inner wall of mounting box opening both sides, two the cylinder has all been pegged graft in the inside of spliced eye, two the cylindrical other end is pegged graft respectively inside two through-holes, two the through-hole symmetry is seted up on telescopic both sides lateral wall, two the cylinder is close to telescopic one end and is seted up inclined plane, two the equal fixedly connected with slider in inside of spliced eye, two the slider is inside two spouts, two respectively sliding connection is inside two spouts set up respectively two cylindrical on the surface, two the equal fixedly connected with lug of cylindrical other end.

Specifically, trigger mechanism includes the shell lid, shell lid joint is on the opening outer wall of mounting box, the fixed trapezoidal section of thick bamboo that cup joints of center department of shell lid, fixedly connected with second pivot on the inner wall of trapezoidal section of thick bamboo, the second pivot is rotated and is connected inside the second changes the hole, the second changes the hole and sets up at shift knob on the surface, the shift knob joint is inside trapezoidal section of thick bamboo, all set up flutedly on the both sides inner wall of shell lid, two arc pieces of symmetry fixedly connected with on the inner wall of shell lid.

Specifically, the two arc blocks correspond to the two cylinders respectively.

A method of using an electronic switch for ease of installation, comprising the steps of:

firstly, a mounting box is clamped inside a mounting groove through a fixing frame, then a sleeve is clamped inside the mounting box, then the sleeve is pushed to move towards the inside of the mounting box, a push rod is extruded through the outer wall of the sleeve, the push rod pushes an inclined block to move after being pushed, the inclined block drives a rotating rod to rotate, the rotating rod is limited by a first rotating shaft to drive the inclined block to be close to the inner wall of the mounting groove, a strip-shaped clamping strip on the inclined block is clamped with a strip-shaped groove, and the inclined block is fixed inside the mounting groove;

secondly, when the sleeve moves towards the inside of the mounting box, the fixed rod is driven to move, the fixed rod drives the switch seat to move, the switch seat drives the conductive block to press one end, located inside the jack, of the L-shaped guide rod, so that the L-shaped guide rod extrudes a lead inside the triangular clamping strip, the lead is connected with the conductive block, and the switch seat is connected with a circuit;

thirdly, pressing the two cylinders from the openings of the two plug-in holes on the outer wall of the mounting box to enable the two cylinders to be inserted into the through holes of the drinking water dispenser, and fixing the sleeve and the mounting box together through the cylinders to prevent the switch base from being separated from the fixed base;

the fourth step, with the outer shell lid joint on the opening outer wall of mounting box, make the arc piece joint inside the sleeve, then rotate the outer shell lid, drive the arc piece through the outer shell lid and rotate, arc piece extrusion when rotating and the epaxial inclined plane of cylinder, and then make the cylinder remove to both ends, make the lug joint on the cylinder inside the recess that corresponds, and then make the outer shell lid fix on the mounting box, need not the instrument and can accomplish the installation fast.

The invention has the beneficial effects that:

(1) the invention relates to an electronic switch convenient to install and an installation method thereof.A sleeve and an installation box are fixed together through a cylinder by pressing two cylinders from openings of two plug holes on the outer wall of the installation box, a switch base is prevented from being separated from a fixed base, then a shell cover is clamped on the outer wall of the opening of the installation box, an arc block is clamped in the sleeve, then the shell cover is rotated, the arc block is driven to rotate through the shell cover, the arc surface extrudes an inclined plane on the cylinder when the arc block rotates, and then the cylinder moves towards two ends, so that a lug on the cylinder is clamped in a corresponding groove, and further the shell cover is fixed on the installation box, and the installation can be quickly completed without tools.

(2) According to the electronic switch convenient to install and the installation method thereof, the installation box is clamped in the installation groove through the fixing frame, the sleeve is clamped in the installation box, the sleeve is pushed to move towards the interior of the installation box, the push rod is extruded through the outer wall of the sleeve, the push rod pushes the inclined block to move after being pushed, the inclined block drives the rotating rod to rotate, the rotating rod is limited by the first rotating shaft to drive the inclined block to be close to the inner wall of the installation groove, the strip-shaped clamping strip on the inclined block is clamped with the strip-shaped groove, the inclined block is further fixed in the installation groove, and the electronic switch is prevented from falling off due to damage to a wall body.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram of an electronic switch provided by the invention and convenient to install;

fig. 2 is a schematic structural diagram of a fixing base of an electronic switch convenient to mount according to the present invention;

fig. 3 is a schematic structural diagram of a housing cover of an electronic switch provided by the invention and convenient to mount;

FIG. 4 is an enlarged view of a portion A of FIG. 1 of an electronic switch of the present invention for easy installation;

fig. 5 is an enlarged view of a portion B of fig. 1 of the electronic switch easy to install according to the present invention;

fig. 6 is a schematic structural diagram of a switch mechanism of an electronic switch convenient to mount according to the present invention;

fig. 7 is a schematic structural diagram of a ramp block of an electronic switch convenient to mount according to the present invention.

In the figure: 1. a fixing frame; 2. an installation mechanism; 21. mounting a box; 22. a strip-shaped hole; 23. a first rotating shaft; 24. a first rotary hole; 25. rotating the rod; 26. a sloping block; 27. a push rod; 28. strip-shaped clamping strips; 29. a strip-shaped groove; 210. mounting grooves; 211. a wall surface; 3. a wiring mechanism; 31. a fixed seat; 32. a clamping groove; 33. a triangular holding strip; 34. a wire; 35. a sliding groove; 36. a jack; 37. an L-shaped guide rod; 38. a circular groove; 39. a spring; 310. limiting slots; 4. a switch mechanism; 41. a sleeve; 42. fixing the rod; 43. a switch base; 44. a disconnect button; 45. a closing button; 46. a conductive block; 47. a limiting column; 48. a conical head; 5. a fixing mechanism; 51. inserting holes; 52. a cylinder; 53. a through hole; 54. a bevel; 55. a slider; 56. a chute; 57. a bump; 6. a trigger mechanism; 61. a housing cover; 62. a trapezoidal cylinder; 63. a second rotating shaft; 64. a second rotary hole; 65. a switch button; 66. a groove; 67. and (4) an arc block.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-7, the electronic switch convenient to mount in the present invention includes a fixing frame 1, a mounting mechanism 2 is disposed inside the fixing frame 1, a wiring mechanism 3 is disposed inside the mounting mechanism 2, a switch mechanism 4 is clamped inside the wiring mechanism 3, a fixing mechanism 5 is disposed at an opening of the mounting mechanism 2, and a trigger mechanism 6 is disposed outside the mounting mechanism 2.

Installation mechanism 2 includes mounting box 21, mounting box 21 joint is inside fixed frame 1, two bar holes 22 have been seted up to the symmetry on mounting box 21's the inner wall, the first pivot 23 of the equal fixedly connected with in inside of two bar holes 22, two first pivots 23 rotate respectively and connect inside two first commentaries on classics hole 24, two first commentaries on classics hole 24 are seted up respectively on the one end of two dwang 25 is surperficial, the equal fixedly connected with sloping 26 of the other end of two dwang 25, two sloping 26 are close to equal fixedly connected with push rod 27 on the inside one side lateral wall of mounting box 21, equal a plurality of bar card strips of fixedly connected with 28 on the opposite side lateral wall of two sloping 26, a plurality of bar card strips 28 joint is inside a plurality of bar grooves 29 respectively, a plurality of bar grooves 29 are seted up respectively on the both sides inner wall of mounting groove 210, mounting groove 210 is seted up on wall 211.

Wiring mechanism 3 includes fixing base 31, fixing base 31 fixed connection is in the inner wall center department of mounting box 21, joint groove 32 has all been seted up to fixing base 31's both sides, two triangle holding strip 33 of the equal symmetrical fixedly connected with in inside of two joint grooves 32, the equal joint in inside of two joint grooves 32 has wire 34, sliding tray 35 has all been seted up on the upper end inner wall of two joint grooves 32, jack 36 has all been seted up on the top inner wall of two sliding tray 35, the inside of two jack 36 is all pegged graft and is had L shape guide arm 37, circular slot 38 has been seted up on sliding tray 35's the inner wall, the inside joint of circular slot 38 has spring 39, spring 39's the other end and the one side lateral wall contact that jack 36 was kept away from to L shape guide arm 37, spacing slot 310 has been seted up on fixing base 31's the lower extreme surface.

Switch mechanism 4 includes sleeve 41, sleeve 41 joint is on the inner wall of mounting box 21, two dead levers 42 of symmetry fixedly connected with on sleeve 41's the inner wall, the same switch seat 43 of the other end fixedly connected with of two dead levers 42, symmetry fixedly connected with break button 44 and on-off button 45 on the lateral wall of one side that fixing base 31 was kept away from to switch seat 43, fixedly connected with conducting block 46 on another some lateral wall of switch seat 43, spacing post 47 of fixedly connected with on the lower extreme lateral wall of switch seat 43, the other end fixedly connected with conical head 48 of spacing post 47.

Fixing mechanism 5 includes two spliced eyes 51, two spliced eyes 51 symmetries are seted up on the inner wall of mounting box 21 opening both sides, cylinder 52 has all been pegged graft in two spliced eyes 51's inside, two cylinder 52's the other end is pegged graft respectively inside two through-holes 53, two through-holes 53 symmetries are seted up on sleeve 41's both sides lateral wall, inclined plane 54 has been seted up to two cylinder 52 near sleeve 41's one end, two spliced eyes 51's the equal fixedly connected with slider 55 in inside, two slider 55 are sliding connection respectively inside two spout 56, two spout 56 are seted up respectively on two cylinder 52's the surface, the equal fixedly connected with lug 57 of two cylinder 52's the other end.

Trigger mechanism 6 includes outer cover 61, outer cover 61 joint is on the opening outer wall of mounting box 21, the fixed trapezoidal section of thick bamboo 62 that cup joints of center department of outer cover 61, fixedly connected with second pivot 63 on the inner wall of trapezoidal section of thick bamboo 62, second pivot 63 rotates to be connected inside second commentaries on classics hole 64, the second is changeed hole 64 and is seted up at shift knob 65 on the surface, shift knob 65 joint is inside trapezoidal section of thick bamboo 62, all seted up recess 66 on the both sides inner wall of outer cover 61, two arc pieces 67 of symmetry fixedly connected with on the inner wall of outer cover 61.

The two arc blocks 67 correspond to the two cylinders 52, respectively.

A method of using an electronic switch for ease of installation, comprising the steps of:

firstly, the mounting box 21 is clamped inside the mounting groove 210 through the fixing frame 1, then the sleeve 41 is clamped inside the mounting box 21, then the sleeve 41 is pushed to move towards the inside of the mounting box 21, the push rod 27 is extruded through the outer wall of the sleeve 41, the push rod 27 is pushed to push the inclined block 26 to move, the inclined block 26 drives the rotating rod 25 to rotate, the rotating rod 25 is limited by the first rotating shaft 23 to drive the inclined block 26 to be close to the inner wall of the mounting groove 210, the strip-shaped clamping strip 28 on the inclined block 26 is clamped with the strip-shaped groove 29, and the inclined block 26 is further fixed inside the mounting groove 210;

secondly, when the sleeve 41 moves towards the inside of the mounting box 21, the fixing rod 42 is driven to move, the fixing rod 42 drives the switch seat 43 to move, the switch seat 43 drives the conductive block 46 to press one end, located inside the jack 36, of the L-shaped guide rod 37, so that the L-shaped guide rod 37 extrudes the lead 34 inside the triangular clamping strip 33, the lead 34 is connected with the conductive block 46, and the switch seat 43 is connected with a circuit;

thirdly, two columns 52 are pressed from the openings of two plug-in holes 51 on the outer wall of the mounting box 21, so that the two columns 52 are inserted into the through holes 53 for drinking, and the sleeve 41 and the mounting box 21 are fixed together through the columns 52 to prevent the switch base 43 from being separated from the fixed base 31;

the fourth step, with outer cover 61 joint on the opening outer wall of mounting box 21, make arc piece 67 joint inside sleeve 41, then rotate outer cover 61, it rotates to drive arc piece 67 through outer cover 61, cambered surface extrusion and the inclined plane 54 on the cylinder 52 when arc piece 67 rotates, and then make cylinder 52 remove to both ends, make the lug 57 joint on the cylinder 52 inside the recess 66 that corresponds, and then make outer cover 61 fix on mounting box 21, need not the instrument and can accomplish the installation fast.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.