CN108767579A - A kind of air purifier of improvement - Google Patents

Abstract

The invention discloses a kind of air purifiers of improvement, including box body and the mating clamping joint being connected on the box body, it is equipped in the box body left end face and is inserted into chamber, inner wall is installed with electricity-supplying piece on the right side of the insertion chamber, above and below the insertion chamber the first cunning chamber is arranged in inner wall, the first cunning intracavitary is slidably installed and has shield, at left and right sides of the first cunning chamber the first guide groove is arranged in inner wall, it is slidably installed in first guide groove and is fixedly connected with the first guide pad with the shield, first guide pad is connected with the first shrapnel far from the side top pressure for being inserted into chamber, the first cunning chamber extends to the right far from the side end for being inserted into chamber slides chamber equipped with second.

Description

A kind of air purifier of improvement

Technical field

The present invention relates to air cleaning facility field, specially a kind of air purifier of improvement.

Background technology

Currently, with the continuous improvement that people require quality of the life, the utilization rate of air purifier is higher and higher, air To adsorb, respectively or convert pollutant in various air, existing air purifier is all clarifier when being powered and connecting It is plugged manually by personnel, because voltage influence easy tos produce electric arc in swapping process, the generation of electric arc is be easy to cause clamping joint The electric shock of user there is certain potential danger can cause safety accident user, cause casualties, and personnel exist Grafting is firmly unstable, is easy to cause equipment damage, moreover, it is traditional into power port usually not closed protective measure, into power port It is exposed to be easily accessible dust etc., influence service life.

Invention content

The purpose of the present invention is to provide a kind of air purifiers of improvement, in the prior art above-mentioned scarce for overcoming It falls into.

A kind of air purifier of improvement according to the present invention, including box body and mating it is connected to the cabinet Clamping joint on body, interior be equipped with of the box body left end face are inserted into chamber, and inner wall is installed with electricity-supplying piece on the right side of the insertion chamber, institute It states and is inserted into chamber and is arranged with the first cunning chamber in inner wall up and down, the first cunning intracavitary is slidably installed and has shield, and described the It is arranged with the first guide groove in inner wall at left and right sides of one cunning chamber, being slidably installed in first guide groove has and the screening Backplate is fixedly connected with the first guide pad, and first guide pad is connected with the first bullet far from the side top pressure for being inserted into chamber Piece, the first cunning chamber extends to the right far from the side end for being inserted into chamber is equipped with the second cunning chamber, on the right side of the insertion chamber It is equipped with first in the box body and passes and matches chamber, described first passes with being arranged in chamber up and down inner wall and described second slides on the right side of chamber The third that setting is led in end slides chamber, and the junction that the first cunning chamber slides chamber with described second, which is rotatably assorted, is provided with the One turns around wheel, and the junction that the second cunning chamber slides chamber with the third, which is rotatably assorted, to be provided with second and turn around wheel, and described first Biography is rotatably assorted with intracavitary is provided with pivoted arm, and the pivoted arm outer surface is installed with first around wheel is received, and described first takes turns up and down around receipts It is symmetrical be installed with bypass respectively second turn around wheel, first turn around wheel and with a side end face of the shield far from the insertion chamber The first connecting rope being fixedly connected, pivoted arm right side extending end be connected by power have the first generator, first generator Outer surface, which is fixedly arranged on described first and passes, matches on the right side of chamber in inner wall, and described first passes in the box body matched on the left of chamber equipped with second It passes and matches chamber, the pivoted arm stretches into described second and passes with intracavitary and passed with described second to be rotatably assorted company with inner wall at left and right sides of chamber It connects, described second, which passes the pivoted arm outer surface with intracavitary, is installed with second around wheel is received, and second biography is led to chamber roof to be set There is hole slot, the hole slot roof leads to slides chamber equipped with the 4th, and the 4th cunning intracavitary is slidably installed and has slide plate, the slide plate Top pressure is connected with the second shrapnel, the cunning on the left of second shrapnel between bottom end face and the 4th cunning bottom of chamber wall Board bottom end surface is installed with into dateline, the described 4th slide in intracavitary bottom wall with it is described opposite equipped with into electric hole into dateline, it is described into Electric hole bottom wall is installed with elasticity into electric piece, described second around receive wheel outer surface be installed with across the hole slot and with the slide plate bottom The second connecting rope that end surface is fixedly connected, the insertion chamber on the right side of the first cunning chamber are arranged with mouth in inner wall up and down Slot, the mouth slot leads to far from the side for being inserted into chamber slides chamber equipped with the 5th, and the 5th cunning intracavitary is slidably installed and has The firm device of lock, the babinet left end face top are additionally provided with alarming device.

Valuably or illustratively, the firm device of the lock includes the balladeur train for sliding intracavitary the described 5th that is slidably installed, The balladeur train screw-internal thread fit is connected with lead screw, and extending end is matched with the 5th cunning chamber inner left wall rotation on the left of the lead screw Connection is closed, extending end be connected by power has the second generator, second generator outer surface to be fixedly arranged on institute on the right side of the lead screw It states on the right side of the 5th cunning chamber in inner wall, the balladeur train is equipped with the 6th cunning chamber towards described be inserted into a side end face of chamber, and the described 6th Sliding intracavitary, which is slidably installed, stretches into the closing piece for being inserted into intracavitary, is arranged in inner wall at left and right sides of the 6th cunning chamber Second guide groove, be slidably installed in second guide groove the second guide pad being fixedly connected with the closing piece, described Second guide pad is equipped with third shrapnel far from the side top pressure cooperation for being inserted into chamber, and second guide groove is inserted far from described Enter in the side inner wall of chamber and is installed with calutron.

Valuably or illustratively, the clamping joint right end face is installed with is inserted into the convex of the mating connection of chamber with described Edge, the flange right end face is interior to be equipped with the mating connection of the electricity-supplying piece into power port, and the flange exterior surface slides It is connected with and abuts against block, the block right end face that abuts against is installed with sealing ring, described to abut against block left end face and the clamping The 4th shrapnel is installed between head right end face, the 4th shrapnel is circumferentially positioned at the flange outer sides, described to abut against the block right side The flange upper and lower end face of side is arranged with the lock chamber being connect with the closing piece lock fit.

Further technical solution, the box body left end face are interior close equipped with the annular being tightly connected with the sealing ring Seal chamber.

Further technical solution, the electricity-supplying piece are electrically connected into electric piece with elasticity, are electrically connected into dateline with city.

Further technical solution, second guide pad are metal derby.

Further technical solution, the alarming device include the mast for being fixedly mounted on the babinet left end face, institute It states mast left distal end and is installed with warning panel.

The beneficial effects of the invention are as follows：Since in the initial state, due to the effect of the first shrapnel, upper and lower both sides are screened Chamber sealing is mutually touched and will be inserted into plate, and due to the effect of third shrapnel, closing piece stretches into insertion intracavitary, due to the work of the second shrapnel With fully sliding out into electric hole into dateline, at this point, electricity-supplying piece is in off-position, to be sealed automatically to being inserted into chamber, prevent It is inserted into intracavitary when being not used and enters dust, increases service life.

When needing using air purifier, the first generator of startup drives first around wheel rotation is received, and first will around receipts wheel First connecting rope of upper and lower both sides is around rising, to drive the shield of both sides up and down to overcome the elastic force of the first shrapnel towards phase negative side To sliding and fully sliding out insertion chamber, while first rotates around receipts wheel, second also begins to rotate around wheel is received, and second takes turns around receipts By second around receive wheel around rise and drive slide plate overcome the elastic force of the second shrapnel make to be fully inserted into dateline into electric hole and with bullet Property abutted into electric piece, at this point, electricity-supplying piece be in energized state, then, by flange be inserted into chamber and be aligned and be inserted into, up to closing piece is slotting Enter and lock intracavitary, then, starts the second generator and flange is driven to slide to the right and electricity-supplying piece is made to be inserted into power port, meanwhile, sealing Circle is inserted into the connection of annular seal space interior sealing, without being manually fully inserted into flange, avoids directly into electricity, to effectively Increase and use completeness, prevent electric shock accidents, clamping joint is locked moreover, fully sliding out lock chamber by closing piece, is prevented Only clamping joint undesirably falls off and powers off, and increases stability in use, and increase using leakproofness, effectively increases air purification The service life of device.

When being finished using air purifier, the second generator of control, which rotates backward, makes balladeur train reverse slide to the 5th cunning chamber The leftmost side is powered to calutron, and the second guide pad of calutron pair carries out absorption to which closing piece fully slides out lock chamber, at this point, Flange is unlocked, then, clamping joint is pulled out manually, then, the first generator is powered off, shield is due to first The elastic force of shrapnel automatically returns to original state, and slide plate is since the effect of the second shrapnel automatically returns to original state, in card It is extracted manually again after connector power-off and effectively prevent electric shock accidents, the automation that automatically resets of shield, slide plate uses journey Degree is high, simple operation, using simple.

Description of the drawings

Fig. 1 is the overall structure diagram of box body in the present invention；

Fig. 2 is the overall structure diagram of clamping joint in the present invention；

Fig. 3 is partial enlargement structural representation in Fig. 1；

Fig. 4 is partial enlargement structural representation in Fig. 1.

Specific implementation mode

With reference to Fig. 1-4, the present invention is described in detail.

Referring to Fig.1-4, the air purifier of a kind of improvement according to an embodiment of the invention, including box body 10 and insert The clamping joint 60 being connected on the box body 10 is connect, is equipped in 10 left end face of the box body and is inserted into chamber 22, it is described It is inserted into 22 right side inner wall of chamber and is installed with electricity-supplying piece 20, the first cunning chamber 27 is arranged in about 22 inner wall of insertion chamber, it is described Being slidably installed in first cunning chamber 27 has shield 23, and being arranged with first in the first cunning 27 left and right sides inner wall of chamber leads To slot 26, it is slidably installed in first guide groove 27 and is fixedly connected with the first guide pad 24, institute with the shield 23 It states the first guide pad 24 and is connected with the first shrapnel 25 far from the side top pressure for being inserted into chamber 22, described first slides chamber 27 far Extend to the right from the side end for being inserted into chamber 22 and slides chamber 33, the box body 10 for being inserted into 22 right side of chamber equipped with second It is inside equipped with the first biography and matches chamber 13, described first passes with being arranged in about 13 inner wall of chamber and the second cunning 33 right end of chamber The third for leading to setting slides chamber 12, and the junction that the first cunning chamber 27 and described second slide chamber 33, which is rotatably assorted, to be provided with First turns around wheel 31, and the junction that the second cunning chamber 33 slides chamber 12 with the third, which is rotatably assorted, to be provided with second and turn around wheel 35, first biography is provided with pivoted arm 18 with being rotatably assorted in chamber 13, and 18 outer surface of the pivoted arm is installed with first and takes turns 15 around receipts, Described first around receive wheel 15 it is symmetrical above and below be installed with respectively bypass second turn around wheel 35, first turn around take turns 31 and with the shield 23 the first connecting ropes 17 being fixedly connected far from the side end face for being inserted into chamber 22,18 right side extending end power of the pivoted arm It is connected with the first generator 14,14 outer surface of the first generator, which is fixedly arranged on described first and passes, matches in 13 right side inner wall of chamber, institute It states to be equipped with second in the box body 10 of first biography with 13 left side of chamber and pass and matches chamber 11, the pivoted arm 18, which stretches into described second and passes, matches It in chamber 11 and passes to be rotatably assorted with 11 left and right sides inner wall of chamber with described second and connect, described second passes with described turn in chamber 11 18 outer surface of arm is installed with second around wheel 47 is received, and second biography is led to 11 roof of chamber equipped with hole slot 44, and the hole slot 44 pushes up Wall leads to slides chamber 42 equipped with the 4th, and being slidably installed in the 4th cunning chamber 42 has slide plate 41,41 bottom end face of the slide plate Top pressure is connected with the second shrapnel 43, the slide plate in second shrapnel, 43 left side between the 4th cunning 42 bottom wall of chamber 41 bottom end faces are installed with into dateline 40, and 42 inner bottom wall of the 4th cunning chamber is interior to be equipped with into dateline 40 is opposite into electric hole with described 49, described fixed flexible into electric piece 48 into 49 bottom wall of electric hole, described second is installed with around 47 outer surfaces of wheel are received across the hole Slot 44 and the second connecting rope 45 being fixedly connected with 41 bottom end face of the slide plate, described first slides the insertion on 27 right side of chamber Mouthful slot 21 is arranged in about 22 inner wall of chamber, the mouth slot 21 leads to far from the side for being inserted into chamber 22 slides chamber equipped with the 5th 32, being slidably installed in the 5th cunning chamber 32 has the firm device of lock, and warning is additionally provided at the top of 10 left end face of the babinet Device.

Valuably or illustratively, the firm device of the lock includes being slidably installed to slide the balladeur train in chamber 32 the described 5th 50,50 screw-internal thread fit of the balladeur train is connected with lead screw 31, and 31 left side extending end of the lead screw slides 32 left side of chamber with the described 5th Side inner wall is rotatably assorted connection, and 31 right side extending end be connected by power of the lead screw has the second generator 34, the second electricity rolling Sub 34 outer surfaces are fixedly arranged on the described 5th and slide in 32 right side inner wall of chamber, and the balladeur train 50 is towards the side end face for being inserted into chamber 22 It is inside equipped with the 6th cunning chamber 56, be slidably installed the closing piece 55 stretched into the insertion chamber 22 in the 6th cunning chamber 56, institute It states in the 6th cunning 56 left and right sides inner wall of chamber and is arranged with the second guide groove 52, be slidably installed in second guide groove 52 There is the second guide pad 54 being fixedly connected with the closing piece 55, second guide pad 54 is far from the side top for being inserted into chamber 22 Press-fit is equipped with third shrapnel 53, and second guide groove 52 is installed with electromagnetism far from described be inserted into the side inner wall of chamber 22 Device 51, to automatically control locking and unlock.

Valuably or illustratively, 60 right end face of the clamping joint is installed with and the 22 mating connection of insertion chamber Flange 63, be equipped with 20 mating connection of the electricity-supplying piece in 63 right end face of the flange into power port 65, it is described convex 65 outer surface of edge, which is slidably connected with, abuts against block 61, and 61 right end face of block that abuts against is installed with sealing ring 62, described to abut against The 4th shrapnel 66 is installed between 60 right end face of 61 left end face of block and the clamping joint, the 4th shrapnel 66 is around setting In 63 outside of the flange, 63 upper and lower end face of the flange for abutting against 61 right side of block is arranged with to be locked with the closing piece 55 The lock chamber 64 of mating connection, to which the clamping joint 60 is locked and is tightly connected automatically.

Valuably or illustratively, the ring being tightly connected with the sealing ring 62 is equipped in 10 left end face of the box body Shape seal chamber 28, to increase the leakproofness when clamping joint 60 uses.

Valuably or illustratively, the electricity-supplying piece 20 is electrically connected with elasticity into electric piece 48, is electrically connected into dateline 40 with city It connects, to automatically control the energization and power-off of electricity-supplying piece 20.

Valuably or illustratively, second guide pad 54 is metal derby, so as to be adsorbed by the calutron 51.

Valuably or illustratively, the alarming device includes the mast for being fixedly mounted on 10 left end face of the babinet 101,101 left distal end of the mast is installed with warning panel 102, to remind people to pay attention to Electrical Safety.

When original state, due to the effect of the first shrapnel 25,23 phase of the shield touching of upper and lower both sides simultaneously will be inserted into chamber 22 Sealing, due to the effect of third shrapnel 53, closing piece 55, which stretches into, to be inserted into chamber 22, due to the effect of the second shrapnel 43, into dateline 40 It fully slides out into electric hole 49, at this point, electricity-supplying piece 20 is in off-position.

When needing using air purifier, starts the first generator 14 and drive first around 15 rotation of wheel is received, first around receipts 15 are taken turns by the first connecting rope 17 of upper and lower both sides around rising, to drive the shield 23 of both sides up and down to overcome the bullet of the first shrapnel 25 Property power slide in the opposite direction and fully slide out be inserted into chamber 22, first around receive wheel 15 rotation while, second around receive wheel 47 Start to rotate, second around receive wheel 47 by second around receive wheel 47 around rise and drive slide plate 41 overcome the elastic force of the second shrapnel 43 make into Dateline 40 is fully inserted into interior into electric hole 49 and is abutted into electric piece 48 with elasticity, at this point, electricity-supplying piece 20 is in energized state, then, Flange 63 is aligned and is inserted into insertion chamber 22, until closing piece 55 is inserted into lock chamber 64, then, starts the drive of the second generator 34 Flange 63 slides to the right and electricity-supplying piece 20 is made to be inserted into power port 65, meanwhile, sealing ring 62 is inserted into 28 interior sealing of annular seal space Connection.

When being finished using air purifier, the second generator 34 of control, which rotates backward, makes 50 reverse slide of balladeur train to the 5th 32 leftmost side of sliding chamber, is powered to calutron 51, and calutron 51 carries out absorption to which closing piece 55 is complete to the second guide pad 54 Lock chamber 64 is skidded off, at this point, being unlocked to flange 63, then, clamping joint 60 is pulled out manually, then, the first electricity is rolled Son 14 powers off, and shield 23 is since the elastic force of the first shrapnel 25 automatically returns to original state, and slide plate 41 is due to the second shrapnel 43 Effect automatically return to original state.

The beneficial effects of the invention are as follows：Since in the initial state, due to the effect of the first shrapnel, upper and lower both sides are screened Chamber sealing is mutually touched and will be inserted into plate, and due to the effect of third shrapnel, closing piece stretches into insertion intracavitary, due to the work of the second shrapnel With fully sliding out into electric hole into dateline, at this point, electricity-supplying piece is in off-position, to be sealed automatically to being inserted into chamber, prevent It is inserted into intracavitary when being not used and enters dust, increases service life.

When needing using air purifier, the first generator of startup drives first around wheel rotation is received, and first will around receipts wheel First connecting rope of upper and lower both sides is around rising, to drive the shield of both sides up and down to overcome the elastic force of the first shrapnel towards phase negative side To sliding and fully sliding out insertion chamber, while first rotates around receipts wheel, second also begins to rotate around wheel is received, and second takes turns around receipts By second around receive wheel around rise and drive slide plate overcome the elastic force of the second shrapnel make to be fully inserted into dateline into electric hole and with bullet Property abutted into electric piece, at this point, electricity-supplying piece be in energized state, then, by flange be inserted into chamber and be aligned and be inserted into, up to closing piece is slotting Enter and lock intracavitary, then, starts the second generator and flange is driven to slide to the right and electricity-supplying piece is made to be inserted into power port, meanwhile, sealing Circle is inserted into the connection of annular seal space interior sealing, without being manually fully inserted into flange, avoids directly into electricity, to effectively Increase and use completeness, prevent electric shock accidents, clamping joint is locked moreover, fully sliding out lock chamber by closing piece, is prevented Only clamping joint undesirably falls off and powers off, and increases stability in use, and increase using leakproofness, effectively increases air purification The service life of device.

When being finished using air purifier, the second generator of control, which rotates backward, makes balladeur train reverse slide to the 5th cunning chamber The leftmost side is powered to calutron, and the second guide pad of calutron pair carries out absorption to which closing piece fully slides out lock chamber, at this point, Flange is unlocked, then, clamping joint is pulled out manually, then, the first generator is powered off, shield is due to first The elastic force of shrapnel automatically returns to original state, and slide plate is since the effect of the second shrapnel automatically returns to original state, in card It is extracted manually again after connector power-off and effectively prevent electric shock accidents, the automation that automatically resets of shield, slide plate uses journey Degree is high, simple operation, using simple.

Those skilled in the art can define, can in the case of not departing from overall spirit and the design of the present invention To make the various modifications for above example.It each falls within protection scope of the present invention.The protection scheme of the present invention It is subject to claims appended hereto.

Claims (7)

1. a kind of air purifier of improvement, including box body and the mating clamping joint being connected on the box body, It is characterized in that：It is equipped in the box body left end face and is inserted into chamber, inner wall is installed with electricity-supplying piece on the right side of the insertion chamber, described It is inserted into chamber or more inner wall and is arranged with the first cunning chamber, the first cunning intracavitary is slidably installed and has shield, and described first It is arranged with the first guide groove in inner wall at left and right sides of sliding chamber, is slidably installed in first guide groove and screens with described Plate is fixedly connected with the first guide pad, and first guide pad is connected with the first bullet far from the side top pressure for being inserted into chamber Piece, the first cunning chamber extends to the right far from the side end for being inserted into chamber is equipped with the second cunning chamber, on the right side of the insertion chamber It is equipped with first in the box body and passes and matches chamber, described first passes with being arranged in chamber up and down inner wall and described second slides on the right side of chamber The third that setting is led in end slides chamber, and the junction that the first cunning chamber slides chamber with described second, which is rotatably assorted, is provided with the One turns around wheel, and the junction that the second cunning chamber slides chamber with the third, which is rotatably assorted, to be provided with second and turn around wheel, and described first Biography is rotatably assorted with intracavitary is provided with pivoted arm, and the pivoted arm outer surface is installed with first around wheel is received, and described first takes turns up and down around receipts It is symmetrical be installed with bypass respectively second turn around wheel, first turn around wheel and with a side end face of the shield far from the insertion chamber The first connecting rope being fixedly connected, pivoted arm right side extending end be connected by power have the first generator, first generator Outer surface, which is fixedly arranged on described first and passes, matches on the right side of chamber in inner wall, and described first passes in the box body matched on the left of chamber equipped with second It passes and matches chamber, the pivoted arm stretches into described second and passes with intracavitary and passed with described second to be rotatably assorted company with inner wall at left and right sides of chamber It connects, described second, which passes the pivoted arm outer surface with intracavitary, is installed with second around wheel is received, and second biography is led to chamber roof to be set There is hole slot, the hole slot roof leads to slides chamber equipped with the 4th, and the 4th cunning intracavitary is slidably installed and has slide plate, the slide plate Top pressure is connected with the second shrapnel, the cunning on the left of second shrapnel between bottom end face and the 4th cunning bottom of chamber wall Board bottom end surface is installed with into dateline, the described 4th slide in intracavitary bottom wall with it is described opposite equipped with into electric hole into dateline, it is described into Electric hole bottom wall is installed with elasticity into electric piece, described second around receive wheel outer surface be installed with across the hole slot and with the slide plate bottom The second connecting rope that end surface is fixedly connected, the insertion chamber on the right side of the first cunning chamber are arranged with mouth in inner wall up and down Slot, the mouth slot leads to far from the side for being inserted into chamber slides chamber equipped with the 5th, and the 5th cunning intracavitary is slidably installed and has The firm device of lock, the babinet left end face top are additionally provided with alarming device.

2. a kind of air purifier of improvement according to claim 1, it is characterised in that：The firm device of the lock includes sliding It is fitted to the described 5th balladeur train for sliding intracavitary, the balladeur train screw-internal thread fit is connected with lead screw, extends on the left of the lead screw End is rotatably assorted with the 5th cunning chamber inner left wall and connect, and extending end be connected by power has the second electricity rolling on the right side of the lead screw Son, second generator outer surface be fixedly arranged on the described 5th and slide on the right side of chamber in inner wall, and the balladeur train is towards the chamber that is inserted into It is equipped with the 6th in one side end face and slides chamber, the 6th cunning intracavitary, which is slidably installed, stretches into the closing piece for being inserted into intracavitary, institute It states and is arranged with the second guide groove in inner wall at left and right sides of the 6th cunning chamber, being slidably installed in second guide groove has and institute State the second guide pad that closing piece is fixedly connected, second guide pad is equipped with the far from the side top pressure cooperation for being inserted into chamber Three shrapnels, second guide groove are installed with calutron far from described be inserted into the side inner wall of chamber.

3. a kind of air purifier of improvement according to claim 1, it is characterised in that：The clamping joint right end face is solid Equipped with the flange with the insertion mating connection of chamber, it is equipped in the flange right end face mating with the electricity-supplying piece Connection into power port, the flange exterior surface, which is slidably connected with, abuts against block, and the block right end face that abuts against is installed with sealing Circle, described abut against are installed with the 4th shrapnel between block left end face and the clamping joint right end face, the 4th shrapnel is surround It is arranged in the flange outer sides, the flange upper and lower end face abutted against on the right side of block is arranged with and the closing piece lock fit The lock chamber of connection.

4. a kind of air purifier of improvement according to claim 1 or 3, it is characterised in that：The box body left-hand end The annular seal space being tightly connected with the sealing ring is equipped in face.

5. a kind of air purifier of improvement according to claim 1, it is characterised in that：The electricity-supplying piece is with elastic into electricity Piece is electrically connected, and is electrically connected into dateline with city.

6. a kind of air purifier of improvement according to claim 1 or 2, it is characterised in that：Second guide pad is Metal derby.

7. a kind of air purifier of improvement according to claim 1, it is characterised in that：The alarming device includes fixing Mounted on the mast of the babinet left end face, the mast left distal end is installed with warning panel.