CN209708610U - A kind of slow drop device for piano keyhoard cover - Google Patents

Abstract

The utility model provides a kind of slow drop device for piano keyhoard cover, including anti-skidding block set, supporting leg, piano fuselage, connecting base, fingerboard lid, connecting shaft, fixed lining seat, piano sounding body, keyboard fixed plate, piano key, U-shaped slide, interior hexagonal socket bolt, can height auxiliary adjustment expansion plate structure, the slow drop observable machine of self-locking protection and auxiliary security locking hold out against rod structure, and the anti-skidding block set is threaded in the lower end of supporting leg.The utility model sliding seat, expansion plate, rectangle sliding slot, movable bolt nut, the setting of lifting seat and groove are conducive to the height that fingerboard lid is adjusted according to service condition, to be suitable for the use demand of different operation person；The setting for observing piece and shield, facilitates look at the working condition of driving motor, and can play protective action.

Description

A kind of slow drop device for piano keyhoard cover

Technical field

The utility model belongs to piano protective device technical field more particularly to a kind of slow drop device for piano keyhoard cover.

Background technique

Since the cover board volume of piano is larger and generally than heavier, piano cover plate rapid descent easily jams a finger or damages Piano, it is larger especially for risk for the children for learning piano.Current existing slow-lowering device for piano generally uses hydraulic work Make principle, piano lid is made slowly to fall naturally, slow descending liquid compression bar is exposed to outside piano, influences aesthetics and the user of piano Usage experience.

China Patent Publication No. is CN207993460U, and invention and created name is a kind of slow drop device for piano keyhoard cover, packet Piano ontology is included, the front of the piano ontology is connected with cover board by universal driving shaft, and the bottom surface of the cover board is fixed to be connected It is connected to fixed block, the fixed block is flexibly connected by first rotating shaft with first support bar, and the bottom end of the first support bar is logical It crosses the second shaft to be flexibly connected with second support bar, the second support bar is through piano ontology and extends to the interior of piano ontology Portion, the slow drop device for piano keyhoard cover, by the way that first support bar, second support bar, triangle pushing block, the first electric expansion is arranged Bar, the second electric telescopic rod, kelly and annulus.But there is also do not have safety lock for existing slow drop device for piano keyhoard cover Only function, the problem of height adjustment can not be carried out according to service condition and is not easy to storage storage.

Therefore, a kind of slow drop device for piano keyhoard cover is invented to be very necessary.

Utility model content

In order to solve the above-mentioned technical problem, the utility model provides a kind of slow drop device for piano keyhoard cover, existing to solve Slow drop device for piano keyhoard cover there is not having safe lock function, height adjustment and not can not be carried out according to service condition The problem of convenient for storage storage.A kind of slow drop device for piano keyhoard cover, including anti-skidding block set, supporting leg, piano fuselage, linking Seat, fingerboard lid, connecting shaft, fixed lining seat, piano sounding body, keyboard fixed plate, piano key, U-shaped slide, interior hexagonal Socket bolt, can height auxiliary adjustment expansion plate structure, the slow drop observable machine of self-locking protection and auxiliary security locking top-fastening rod knot Structure, the anti-skidding block set are threaded in the lower end of supporting leg；Longitudinal upper end bolt is mounted on steel to the supporting leg respectively The bottom four corners position of qin fuselage；The connecting base bolt is mounted on the right side of the lower surface of fingerboard lid；The steel The lower-left end of piano key board lid is mounted on the bosom position between fixed lining seat by connecting shaft；The fixed lining seat point Other bolt is mounted on before and after the upper left side of piano fuselage two；The piano sounding body bolt is mounted on the inside of piano fuselage Left side；The keyboard fixed plate cross bolts are mounted on the upper right side of piano fuselage；The upper right side of the keyboard fixed plate It is provided with piano key；The U-shaped slide is mounted on the front surface right part of piano fuselage by interior hexagonal socket bolt；It is described Can height auxiliary adjustment expansion plate structure rod structure phase held out against by the slow drop observable machine of self-locking protection and auxiliary security locking Connection；It is described can height auxiliary adjustment expansion plate structure include sliding seat, expansion plate, rectangle sliding slot, movable bolt nut, Lifting seat and groove, the sliding seat axis connect in the upper end of expansion plate；The inner lower middle position of the expansion plate is vertical To offering rectangle sliding slot；The bolt activity of the movable bolt nut runs through the inside of rectangle sliding slot and passes through lifting The upper inside middle position threaded coupling nut of seat；The inside lower right side of the lifting seat opens up fluted.

Preferably, the slow drop observable machine of the self-locking protection includes observation piece, and shield delays drop rack gear, delays drop gear, Worm type of reduction gearing and driving motor, the observation piece are embedded in the lower right side bosom position of shield；Described The right end bolt of shield is mounted on the lower end of slow drop rack gear；The slow drop gear key is connected to the defeated of worm type of reduction gearing Shaft front end；The driving motor transverse direction right end bolt is mounted on the left side middle position of worm type of reduction gearing.

Preferably, it includes fixture nut, the anti-guard housing of L-type, fastening screw, peace that the auxiliary security locking, which holds out against rod structure, Full latch, rotating handle and limit switch, the fixture nut are embedded in the upper right side bosom position of the anti-guard housing of L-type； The fastening screw horizontal thread is connected to the bosom position of fixture nut；One end bearing of the fastening screw connection The bosom position of safety lock stops, the other end are bolted to the left side middle position of rotating handle；The limit switch Cross screw is connected to the lower left side upper middle position of the anti-guard housing of L-type.

Preferably, the upper end bolt of the sliding seat is mounted on the lower surface middle position of connecting base.

Preferably, the expansion plate specifically uses rectangle corrosion resistant plate.

Preferably, the lifting seat longitudinally-moving is plugged on the inside left of U-shaped slide.

Preferably, the gentle drop gear of the slow drop rack gear is engaged.

Preferably, the slow drop rack gear longitudinal bolt is mounted on the left side middle position of lifting seat.

Preferably, the observation piece specifically uses transparent PVC plastic sheet.

Preferably, the shield specifically uses longitudinal section for rectangular PVC plastic cover.

Preferably, the shield cover connects the outside in worm type of reduction gearing and driving motor.

Preferably, the worm type of reduction gearing bolt is mounted on the bottom right middle position of piano fuselage.

Preferably, the upper right side bolt of the anti-guard housing of the L-type is mounted on the bottom right of piano fuselage apart from piano machine Five centimeters of right end of body.

Preferably, the safety lock stops activity is plugged on the bosom position of groove.

Preferably, the driving motor specifically uses the motor of model 775.

Preferably, the driving motor connects setting with limit switch conducting wire.

Preferably, the limit switch specifically uses the travel switch of model YBLX-ME/8108.

Compared with prior art, the utility model has the following beneficial effects:

1. in the utility model, the sliding seat, expansion plate, rectangle sliding slot, movable bolt nut, lifting seat and recessed The setting of slot is conducive to the height that fingerboard lid is adjusted according to service condition, to be suitable for making for different operation person Use demand.

2. in the utility model, the setting of the observation piece and shield facilitates look at the work feelings of driving motor Condition, and protective action can be played.

3. in the utility model, the slow drop rack gear delays drop gear, and worm type of reduction gearing and driving motor are set It sets, is conducive to slow drop fingerboard lid, play the role of buffering landing, while convenient for storage storage, guaranteeing using operation just Victory.

4. in the utility model, the fixture nut, the anti-guard housing of L-type, fastening screw, safety lock stops and rotating handle Setting, is conducive to play the role of safe lock, to guarantee safety in utilization.

5. in the utility model, the setting of the limit switch is conducive to play position-limiting action, play a protective role.

6. in the utility model, the setting of the anti-skidding block set and supporting leg is conducive to play anti-skidding supporting role.

7. in the utility model, the setting of the U-shaped slide advantageously ensures that lifting seat in real time inside U-shaped slide Sliding guarantees slow drop safety.

8. in the utility model, the setting of the worm type of reduction gearing is conducive to play slow drop protective effect.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Fig. 2 be the utility model can height auxiliary adjustment expansion plate structure structural schematic diagram.

Fig. 3 is the structural schematic diagram of the slow drop observable machine of self-locking protection of the utility model.

Fig. 4 is that the auxiliary security locking of the utility model holds out against the structural schematic diagram of rod structure.

In figure:

1, anti-skidding block set；2, supporting leg；3, piano fuselage；4, connecting base；5, fingerboard lid；6, connecting shaft；7, solid Fixed lining seat；8, piano sounding body；9, keyboard fixed plate；10, piano key；11, U-shaped slide；12, interior hexagonal socket bolt；13, It can height auxiliary adjustment expansion plate structure；131, sliding seat；132, expansion plate；133, rectangle sliding slot；134, movable bolt spiral shell It is female；135, lifting seat；136, groove；14, the slow drop observable machine of self-locking protection；141, piece is observed；142, shield；143, delay drop Rack gear；144, delay drop gear；145, worm type of reduction gearing；146, driving motor；15, auxiliary security locking holds out against rod structure； 151, fixture nut；152, the anti-guard housing of L-type；153, fastening screw；154, safety lock stops；155, rotating handle；156, limit is opened It closes.

Specific embodiment

The utility model is specifically described with reference to the accompanying drawing, as shown in Figure 1 and Figure 2, a kind of fingerboard Lid ramp-down device, including anti-skidding block set 1, supporting leg 2, piano fuselage 3, connecting base 4, fingerboard lid 5, connecting shaft 6 are fixed Seat 7 is served as a contrast, piano sounding body 8, keyboard fixed plate 9, piano key 10, U-shaped slide 11, interior hexagonal socket bolt 12 can be highly auxiliary It helps and adjusts expansion plate structure 13, drop observable machine 14 is delayed in self-locking protection and auxiliary security locking holds out against rod structure 15, and described is anti- Sleeve base 1 is threaded in the lower end of supporting leg 2；Longitudinal upper end bolt is mounted on piano fuselage 3 to the supporting leg 2 respectively Bottom four corners position；4 bolt of connecting base is mounted on the right side of the lower surface of fingerboard lid 5；The fingerboard The lower-left end of lid 5 is mounted on the bosom position between fixed lining seat 7 by connecting shaft 6；The fixed lining seat 7 is distinguished Bolt is mounted on before and after the upper left side of piano fuselage 3 two；8 bolt of piano sounding body is mounted on the interior of piano fuselage 3 On the left of portion；9 cross bolts of keyboard fixed plate are mounted on the upper right side of piano fuselage 3；The right side of the keyboard fixed plate 9 Upside is provided with piano key 10；The U-shaped slide 11 is mounted on the preceding table of piano fuselage 3 by interior hexagonal socket bolt 12 Face right part；It is described can height auxiliary adjustment expansion plate structure 13 pass through the slow drop observable machine 14 of self-locking protection and auxiliary security lock Rod structure 15 is only held out against to be connected；It is described can height auxiliary adjustment expansion plate structure 13 include sliding seat 131, expansion plate 132, Rectangle sliding slot 133, movable bolt nut 134, lifting seat 135 and groove 136,131 axis of sliding seat connect in expansion plate 132 upper end；The inner lower middle position of the expansion plate 132 longitudinally offers rectangle sliding slot 133；The activity Inside of the bolt activity of bolt and nut 134 through rectangle sliding slot 133 and the upper inside middle position across lifting seat 135 Threaded coupling nut；The inside lower right side of the lifting seat 135 opens up fluted 136, in order to guarantee to be suitable for different operation The demand of person can pass through relaxation exercise bolt and nut 134, height position of the slidable adjustment expansion plate 132 in 135 front of lifting seat It sets, opens and closes angle to change the lifting of fingerboard lid 5, and then satisfy the use demand.

In the present embodiment, in conjunction with shown in attached drawing 3, the slow drop observable machine 14 of the self-locking protection includes observation piece 141, Shield 142 delays drop rack gear 143, delays drop gear 144, worm type of reduction gearing 145 and driving motor 146, the observation piece 141 are embedded in the lower right side bosom position of shield 142；The right end bolt of the shield 142 is mounted on slow drop tooth The lower end of item 143；The slow drop gear 144 is keyed in the output shaft front end of worm type of reduction gearing 145；The driving The lateral right end bolt of motor 146 is mounted on the left side middle position of worm type of reduction gearing 145, by observation piece 141 through anti- Shield 142 is observable inner workings, when delaying drop operation, drives worm type of reduction gearing 145 dynamic by driving motor 146 Make, so that worm type of reduction gearing 145 drives slow drop gear 144 rotation so that slow drop rack gear 143 drives lifting seat 135 to exist U-shaped 11 internal actions of slide, thus realize slow drop work of the fingerboard lid 5 by connecting shaft 6 inside fixed lining seat 7, To guarantee operational safety.

In the present embodiment, in conjunction with shown in attached drawing 4, it includes fixture nut that the auxiliary security locking, which holds out against rod structure 15, 151, the anti-guard housing 152 of L-type, fastening screw 153, safety lock stops 154, rotating handle 155 and limit switch 156, the fixation Nut 151 is embedded in the upper right side bosom position of the anti-guard housing 152 of L-type；153 horizontal thread of fastening screw is connected to The bosom position of fixture nut 151；In the inside of 153 1 end bearing of the fastening screw connection safety lock stops 154 Between position, the other end is bolted to the left side middle position of rotating handle 155；156 cross screw of the limit switch connection In the lower left side upper middle position of the anti-guard housing 152 of L-type, in order to improve safety in utilization, which increases safe lock function, Position of the fastening screw 153 inside fixture nut 151 is rotated by holding rotating handle 155, makes safety lock stops 154 at this time It moves into and carries out safe lock inside groove 136, can prevent worm type of reduction gearing 145 from occurring under fatigue damage appearance suddenly The danger fallen improves locking safety.

In the present embodiment, specifically, the upper end bolt of the sliding seat 131 is mounted in the lower surface of connecting base 4 Between position.

In the present embodiment, specifically, the expansion plate 132 specifically uses rectangle corrosion resistant plate.

In the present embodiment, specifically, 135 longitudinally-moving of lifting seat is plugged on the inside left of U-shaped slide 11.

In the present embodiment, specifically, the gentle drop gear 144 of the slow drop rack gear 143 is engaged.

In the present embodiment, specifically, slow 143 longitudinal bolt of drop rack gear is mounted in the left side of lifting seat 135 Between position.

In the present embodiment, specifically, the observation piece 141 specifically uses transparent PVC plastic sheet.

In the present embodiment, specifically, the shield 142 specifically uses longitudinal section for rectangular PVC plastic cover.

In the present embodiment, specifically, the cover of shield 142 connects in worm type of reduction gearing 145 and driving motor 146 outside.

In the present embodiment, specifically, 145 bolt of worm type of reduction gearing is mounted on the bottom of piano fuselage 3 Right side middle position.

In the present embodiment, specifically, the upper right side bolt of the anti-guard housing 152 of the L-type is mounted on the bottom of piano fuselage 3 Five centimeters of right end on the right side of portion apart from piano fuselage 3.

In the present embodiment, specifically, 154 activity of safety lock stops is plugged on the bosom position of groove 136 It sets.

In the present embodiment, specifically, the driving motor 146 specifically uses the motor of model 775.

In the present embodiment, specifically, the driving motor 146 connects setting with 156 conducting wire of limit switch.

In the present embodiment, specifically, the limit switch 156 specifically uses the stroke of model YBLX-ME/8108 Switch.

Working principle

In the utility model, in order to guarantee the demand suitable for different operation person, relaxation exercise bolt and nut can be passed through 134, slidable adjustment expansion plate 132 is opened in the height and position of 135 front of lifting seat to change the lifting of fingerboard lid 5 Close angle degree, and then satisfy the use demand, by observation piece 141 through shield 142 i.e. observable inner workings, delay drop behaviour When making, worm type of reduction gearing 145 is driven to act by driving motor 146, so that worm type of reduction gearing 145 drives slow drop tooth 144 rotation of wheel is so that slow drop rack gear 143 drives lifting seat 135 in U-shaped 11 internal actions of slide, to realize fingerboard Slow drop work of the lid 5 by connecting shaft 6 inside fixed lining seat 7, to guarantee operational safety, in order to improve using safe Property, which increases safe lock function, rotates fastening screw 153 inside fixture nut 151 by hand-held rotating handle 155 Position moves into safety lock stops 154 and carries out safe lock inside groove 136, can prevent worm and gear from slowing down Device 145 occurs fatigue damage and the danger fallen suddenly occurs, improves locking safety.

Using technical solution described in the utility model or those skilled in the art in technical solutions of the utility model Under inspiration, similar technical solution is designed, and reaches above-mentioned technical effect, is the protection model for falling into the utility model It encloses.

Claims (10)

1. a kind of slow drop device for piano keyhoard cover, which is characterized in that the slow drop device for piano keyhoard cover includes anti-skidding block set (1), Supporting leg (2), piano fuselage (3), connecting base (4), fingerboard lid (5), connecting shaft (6), fixed lining seat (7), piano hair Sound body (8), keyboard fixed plate (9), piano key (10), U-shaped slide (11), interior hexagonal socket bolt (12) can highly assist It adjusts expansion plate structure (13), drop observable machine (14) is delayed in self-locking protection and auxiliary security locking is held out against rod structure (15), described Anti-skidding block set (1) be threaded in the lower ends of supporting leg (2)；Longitudinal upper end bolt is mounted on the supporting leg (2) respectively The bottom four corners position of piano fuselage (3)；The lower surface that described connecting base (4) bolt is mounted on fingerboard lid (5) is right Side；The lower-left end of the fingerboard lid (5) is mounted on the bosom between fixed lining seat (7) by connecting shaft (6) Position；Bolt is mounted on before and after the upper left side of piano fuselage (3) two to fixed lining seat (7) respectively；The piano hair Sound body (8) bolt is mounted on the inside left of piano fuselage (3)；Described keyboard fixed plate (9) cross bolts are mounted on piano The upper right side of fuselage (3)；The upper right side of the keyboard fixed plate (9) is provided with piano key (10)；The U-shaped slide (11) the front surface right part of piano fuselage (3) is mounted on by interior hexagonal socket bolt (12)；Described can height auxiliary adjustment Expansion plate structure (13) holds out against rod structure (15) with auxiliary security locking by slow drop observable machine (14) of self-locking protection and is connected； It is described can height auxiliary adjustment expansion plate structure (13) include sliding seat (131), expansion plate (132), rectangle sliding slot (133), movable bolt nut (134), lifting seat (135) and groove (136), the sliding seat (131) axis connect in expansion plate (132) upper end；The inner lower middle position of the expansion plate (132) longitudinally offers rectangle sliding slot (133)；It is described Movable bolt nut (134) bolt activity through rectangle sliding slot (133) inside and pass through lifting seat (135) inside Upside middle position threaded coupling nut；The inside lower right side of the lifting seat (135) opens up fluted (136).

2. slow drop device for piano keyhoard cover as described in claim 1, which is characterized in that the slow drop observable of the self-locking protection Machine (14) includes observation piece (141), and shield (142) delays drop rack gear (143), delays drop gear (144), worm type of reduction gearing (145) and driving motor (146), the observation piece (141) are embedded in the lower right side bosom position of shield (142)； The right end bolt of the shield (142) is mounted on the lower end of slow drop rack gear (143)；Slow drop gear (144) key connects It connects in the output shaft front end of worm type of reduction gearing (145)；The lateral right end bolt of the driving motor (146) is mounted on worm gear The left side middle position of worm reducer (145).

3. slow drop device for piano keyhoard cover as described in claim 1, which is characterized in that the auxiliary security locking top-fastening rod Structure (15) includes fixture nut (151), the anti-guard housing of L-type (152), fastening screw (153), safety lock stops (154), rotating handle (155) and limit switch (156), the fixture nut (151) are embedded in the upper right side bosom of the anti-guard housing of L-type (152) Position；Described fastening screw (153) horizontal thread is connected to the bosom position of fixture nut (151)；Described holds out against (153) one end bearing of screw rod connects the bosom position of safety lock stops (154), and the other end is bolted to rotating handle (155) left side middle position；Described limit switch (156) cross screw is connected in the lower left side of the anti-guard housing of L-type (152) Portion middle position.

4. slow drop device for piano keyhoard cover as described in claim 1, which is characterized in that the upper end of the sliding seat (131) Bolt is mounted on the lower surface middle position of connecting base (4).

5. slow drop device for piano keyhoard cover as described in claim 1, which is characterized in that the expansion plate (132) is specifically adopted Use rectangle corrosion resistant plate.

6. slow drop device for piano keyhoard cover as described in claim 1, which is characterized in that the lifting seat (135) is longitudinally living The dynamic inside left for being plugged on U-shaped slide (11).

7. slow drop device for piano keyhoard cover as claimed in claim 2, which is characterized in that the slow drop rack gear (143) is gentle Drop gear (144) is engaged.

8. slow drop device for piano keyhoard cover as claimed in claim 2, which is characterized in that the slow drop rack gear (143) is longitudinal Bolt is mounted on the left side middle position of lifting seat (135).

9. slow drop device for piano keyhoard cover as claimed in claim 2, which is characterized in that the observation piece (141) is specifically adopted With transparent PVC plastic sheet.

10. slow drop device for piano keyhoard cover as claimed in claim 2, which is characterized in that the shield (142) is specifically adopted It is rectangular PVC plastic cover with longitudinal section.