CN1746543A - One-way controllable valve with spiral wire wheel top push and top back compensator - Google Patents
One-way controllable valve with spiral wire wheel top push and top back compensator Download PDFInfo
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- CN1746543A CN1746543A CN 200510027387 CN200510027387A CN1746543A CN 1746543 A CN1746543 A CN 1746543A CN 200510027387 CN200510027387 CN 200510027387 CN 200510027387 A CN200510027387 A CN 200510027387A CN 1746543 A CN1746543 A CN 1746543A
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- valve
- top back
- helix wheel
- valve plate
- compensator
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 57
- 238000000034 method Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 9
- 230000000750 progressive effect Effects 0.000 claims description 4
- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract 3
- 238000007789 sealing Methods 0.000 description 6
- 235000014676 Phragmites communis Nutrition 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002789 length control Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The controllable valve in the invention includes a spool consisting of a valve block and a spiral winding reel set with slots, and a valve body. The valve block consists of a valve plate, a sideboard, a valve plate shaft, a cylinder, a shaft sleeve, a mounting groove and a top-withdrawing compensator. The cylinder groove and the valve plate shaft groove disposed on two sideboards of the valve plate are used for mounting the cylinder and the valve plate shaft separately. The top-withdrawing compensator is mounted in the mounting groove between the cylinder and the valve plate. The spiral winding reel consists of a rotation shaft and two spiral winding reels with the slots. The rotation shaft hole and the valve plate shaft hole on the side wall of the toilet valve body way are used for mounting the rotation shaft and the valve plate shaft separately.
Description
Technical field
The present invention relates to a kind of helix wheel thruster one-way controllable valve that has top back compensator, relating in particular to valve body is a kind of helix wheel thruster one-way controllable valve that has top back compensator of closet.
Background technique
In the prior art, various one-way cocks, the overwhelming majority is to belong to uncontrollable one-way cock, uncontrollable one-way cock has the fireballing characteristics of keying, but has just lost the characteristics of its fast opening and closing after one-way cock has controllability.As everyone knows, the valve that is used for closet must have the characteristics of fast opening and closing, so in present apparatus for closet, also be difficult to use one-way controllable valve.
Summary of the invention
The object of the present invention is to provide a kind of helix wheel thruster one-way controllable valve that has top back compensator, this valve can be with less power opening and closing valve under the effect of helix wheel and top back compensator, and has the characteristics of fast opening and closing.
The technological scheme that realizes above-mentioned purpose is: provide a kind of helix wheel thruster one-way controllable valve that has top back compensator to comprise that spool, valve body reach and the control device of described valve combination, described spool comprises valve block, the helix wheels of forming by rotating shaft and a pair of helix wheel, described valve body is to have water reservoir, port and coupled logical passage, it is characterized in that wherein said valve block is made up of valve plate, side plate, valve shaft, cylinder, axle sleeve, mounting groove and top back compensator; Described side plate and the valve plate that is positioned at the valve plate both sides is perpendicular; Be provided with a pair of cylinder groove and a pair of valve plate axial trough on the side plate relatively, valve shaft passes the valve plate axial trough movably, is fixed on the valve body; Cylinder passes cylinder groove, is installed on the valve plate and with valve shaft to parallel; The cylinder two ends are rotatably mounted with axle sleeve, and described top back compensator is a resilient member, are installed in the mounting groove; Described helix wheel respectively has one and colludes groove, and when described helix wheels were installed on the valve body by rotating shaft, its helix wheel periphery offseted along the axle sleeve with described cylinder two ends; Along with the rotation of rotating shaft, helix wheel passes through axle sleeve pushing tow valve plate, and does progressive applying or gradually move back separating action to valve body port by means of the effect of top back compensator.
The above-mentioned helix wheel thruster one-way controllable valve that has top back compensator, wherein, mounting groove is a Baltimore groove, between biside plate, on the valve plate corresponding to cylinder groove.
The above-mentioned helix wheel thruster one-way controllable valve that has top back compensator, wherein, nearly center portion is provided with rotary shaft hole on the channel side wall of described valve body, sidewall near part one side is provided with the valve plate axis hole, described rotating shaft and valve shaft two ends are installed in respectively in rotary shaft hole and the valve plate axis hole, and spool is positioned in the passage of valve body.
The above-mentioned helix wheel thruster one-way controllable valve that has top back compensator wherein, is located to be provided with one and is colluded groove between the maximum flange on helix wheel periphery edge and minimum flange.
The above-mentioned helix wheel thruster one-way controllable valve that has top back compensator, wherein, the position that described valve body port and valve plate fit is laminated with flexible cushion.
The above-mentioned helix wheel thruster one-way controllable valve that has top back compensator, wherein, described top back compensator is by resilient members that elastomeric objects constituted such as spring steel plate or springs.
The above-mentioned helix wheel thruster one-way controllable valve that has top back compensator, wherein, the position of rotary shaft hole that the channel side wall of valve body is provided with and valve plate axis hole, can make valve in closing closed procedure, along with helix wheel turns to its periphery when nearly maximum flange place and axle sleeve offset, the valve plate on the spool and the applying of the port on the valve body reach the optimal seal state.
The above-mentioned helix wheel thruster one-way controllable valve that has top back compensator, wherein, the water reservoir of closet valve body topmost around be provided with tank in the sidewall, tank is provided with a plurality of high-order water orifices towards the water reservoir direction; One end of tank links to each other with outside intake pipe; Water reservoir, the port of drainage is connected with the passage of drainage; This port is positioned at water reservoir and passage intersection, and spillway is positioned at the water reservoir sidewall, and its under shed is positioned at below the normality water line, and its upper shed and normality water line are contour.
The above-mentioned helix wheel thruster one-way controllable valve that has top back compensator wherein, is made up of power plant, water supply device and a single armed double pendulum round trip switch with the control device of described valve combination.Power plant are made up of motor, gear-box and power plant control circuit, and water supply device are made up of electromagnetism water valve or water pump and water supply device control circuit; The rotating shaft of spool one end can be inserted in the hollow output shaft of gear-box of power plant, and defend the method for radially inserting described hollow output shaft and rotating shaft hollow output shaft and rotating shaft are fused by dialling, when rotating shaft is rotated, drive driving lever and rotate clockwise and counterclockwise, with the keying of control single armed double pendulum round trip switch.
The above-mentioned helix wheel thruster one-way controllable valve that has top back compensator, wherein, the described group of switching motion of defending control single armed double pendulum round trip switch dialled and defended by driven by motor, signal may command timing circuit, the relay gathered, and supervisory device and power plant are run well, described single armed double pendulum round trip switch comprises two swing arms, two fulcrums of four contacts, described driving lever is when rotating, actuating spring so that it clashes into the fulcrum of swing arm, is controlled the disconnection or the connection of contact relatively.
The above-mentioned helix wheel thruster one-way controllable valve that has top back compensator, wherein, with the control device of described valve combination be a detachable manual handle that is installed in rotating shaft one end.
Adopt technique scheme, have following effect: this valve, because unique valve core structure cooperates power plant again, the effect of supervisory device and interlock circuit is so have controlled and characteristics fast opening and closing.Simultaneously, by means of the progressive applying of helix wheels and top back compensator or gradually move back the action of separation, make the applying of valve plate and port or separate the less power that only needs, thereby make the described helix wheel thruster one-way controllable valve that has top back compensator in whole operation process, reduce demand significantly, and the good sealing effect when guaranteeing that valve plate and port are fitted to power.In addition, owing to adopted top back compensator, this valve no longer to need the necessary machining accuracy of conventional valves, and can also improve the functional reliability of valve, reduce its manufacture cost.
Brief description of drawings
Fig. 1 is a valve block part schematic representation in addition;
The valve block schematic representation of Fig. 2 for having assembled;
Fig. 3 is helix wheels schematic representation;
Fig. 4 is the spool schematic representation;
Fig. 5 be have the helix wheel periphery of colluding groove along and shaft axis between the expansion schematic representation of distance on two dimensional surface;
Fig. 6 is spool and closet valve body separation structure schematic representation;
Fig. 7 is in the schematic representation that sealing paste closes state for valve plate and port;
Fig. 8 is in the schematic representation of fit-state for valve plate and port;
Fig. 9 is in the schematic representation of the state of getting loose for valve plate and port;
Figure 10 is in the schematic representation of separated state for valve plate and port;
Figure 11 is power plant and interlock circuit schematic representation;
Figure 12 is water supply device and interlock circuit schematic representation;
Figure 13 is single armed double pendulum round trip switch conduction position schematic representation under three kinds of different conditions;
Figure 14 is the single armed double pendulum round trip construction of switch schematic representation by driving lever control;
Figure 15 is suitable for the wall row formula water closet schematic side view of the helix wheel thruster one-way controllable valve that has top back compensator;
Figure 16 is suitable for the wall row formula water closet front elevational schematic of the helix wheel thruster one-way controllable valve that has top back compensator;
Figure 17 is suitable for ground row's formula water closet schematic side view of the helix wheel thruster one-way controllable valve that has top back compensator;
Figure 18 is suitable for ground row's formula water closet front elevational schematic of the helix wheel thruster one-way controllable valve that has top back compensator;
Figure 19 is suitable for the toilet within kiln schematic representation of the helix wheel thruster one-way controllable valve that has top back compensator;
Figure 20 is suitable for the urinal schematic representation of the helix wheel thruster one-way controllable valve that has top back compensator.
Embodiment
As Fig. 1～shown in Figure 4, spool 10 is made up of valve block 20 and helix wheels 30.Its middle valve plate 20 comprises valve plate 21, side plate 22-1,22-2, valve shaft 24, cylinder 26, mounting groove 28, axle sleeve 34-1,34-2 and top back compensator 27.Described side plate 22-1,22-2 is positioned at the both sides of valve plate 21 and perpendicular with valve plate, offer cylinder groove 25-1 on the side plate, 25-2 and valve plate axial trough 23-1,23-2, described two cylinder grooves lay respectively at the position at nearly biside plate middle part, described two valve plate axial troughs lay respectively at the position of nearly biside plate one end, valve shaft 24 is by valve plate axial trough 23-1,23-2 and valve plate 21 are movably connected, valve plate 21 is except can rotating around valve shaft 24, also can be along valve plate axial trough 23-1, the long axis direction of 23-2 is traversing, valve plate can be traversing characteristic, can make valve plate in active procedure, can regulate automatically and port 42 between distance, so that fit with port 42 better, cylinder 26 is installed in cylinder groove 25-1, in the 25-2, cylinder 26 and valve shaft 24 opposing parallel, mounting groove 28 is a Baltimore groove, on the valve plate 21 corresponding to cylinder groove between the biside plate, top back compensator 27 is by resilient members that elastomeric objects constituted such as spring steel plate or springs, top back compensator 27 is placed in the mounting groove 28, the size of mounting groove 28 and top back compensator 27 are complementary, top back compensator 27 and cylinder 26 offset helix wheels 30 by rotating shaft 33 and have and collude groove 32-1, the two helix wheel 31-1 of 32-2,31-2 forms, and colludes groove 32-1,32-2 locates between the maximum flange on helix wheel periphery edge and minimum flange.Rotating shaft 33 runs through two helix wheel 31-1,32-2, and is parallel to cylinder 26, and a detachable manual handle 37 is installed on the end that rotating shaft is connected with quill shaft.On the cylinder 26 of cylinder 26 and helix wheel 31-1,31-2 relative position, be rotatably mounted with axle sleeve 34-1,34-2.The periphery of helix wheel 31-1,31-2 offsets along the surface with axle sleeve 34-1,34-2, distance L between 33 axis changes because helix wheel 31-1,31-2 periphery are along each point to rotating shaft, and a step 35-1,35-2 are arranged between ultimate range and minimum range.Be illustrated in figure 5 as have the helix wheel periphery of colluding groove 32-1,32-2 along and the axis of rotating shaft 33 between the expansion schematic representation of distance on two dimensional surface, the figure shows in the distance of colluding between groove 32-1,32-2 place helix wheel periphery edge and shaft axis the shortest, be called low journey position, represent then that at the maximum flange place of step 35-1,35-2 the distance between helix wheel periphery edge and shaft axis is the longest, be called the elevation position.The water reservoir 41, the port 42 that are illustrated in figure 6 as valve body are connected with passage 43, and the sidewall of passage 43 is provided with rotary shaft hole 44, valve plate axis hole 45.Described valve body upper spindle hole 44 can be guaranteed in the valve closing process with the position of valve plate axis hole 45, along with helix wheel turns to periphery when nearly maximum flange place and axle sleeve offset, the valve plate 21 on the spool 10 reaches best sealing fit-state with the port 42 on the valve body.Port 42 is laminated with flexible cushion (not shown) to strengthen its sealing effect with valve plate 21 corresponding positions.
As Figure 15～Figure 20 shows that closet valve body 50, comprise the water reservoir 41 that is positioned at closet valve body 50 tops, the high-end tank 51 that is provided with at water reservoir 41, tank 51 is provided with a plurality of high-order water orifices 52, one end of intake pipe 57 communicates with tank 51, water reservoir 41, port 42 are connected with passage 43, port 42 is positioned at water reservoir 41 and passage 43 intersections, spillway 53 is positioned at the sidewall of water reservoir 41, its under shed 54 is positioned at the normality water line below 56, and its upper shed 55 is contour with normality water line 56.
As Figure 11～Figure 14 shows that with as described in have combined power plant, water supply device and the interlock circuit of helix wheel thruster one-way controllable valve of top back compensator, comprising relay J, K, H, diode M, N, flush button S, pre-spraying button T, the time limit functional circuit O of the different output terminals of CPU, P, Q, R, line contacts A, B, C, D, E, rotating shaft 33, power supply+,-, supervisory device 60, power plant 61, hollow output shaft 62, driving lever 63, single armed double pendulum round trip switch 71, reed 72, fulcrum 73,74.Described power plant 61 are made up of motor and gear-box, and water supply device 60 are made up of electromagnetism water valve or water pump.Wherein, an end of valve core shaft 33 can insert in the hollow output shaft 62 of power plant 61 1 ends, and radially inserts the method for described hollow output shaft 62 and rotating shaft 33 by driving lever 63, and hollow output shaft 62 and rotating shaft 33 are fused.
Working principle of the present invention and operating procedure are summarized as follows: Figure 7 shows that valve plate 21 and port 42 are in the sealing fit-state, under this state, valve closing, helix wheel 31-1,31-2 periphery are in nearly elevation position along last with point of contact axle sleeve 34-1,34-2, and top back compensator 27 is in pressured state; When Figure 8 shows that Open valve, rotating shaft 33 is rotated along clockwise direction among the figure, and the helix wheel periphery is moved to low journey position direction by the elevation position with point of contact axle sleeve 34-1,34-2 along last, and by the effect of top back compensator 27, valve plate 21 gradually moves back with port and separates; Figure 9 shows that valve plate and port get loose fully when the helix wheel periphery is colluded groove along last point of contact with axle sleeve 34-1,34-2 is close, top back compensator 27 is in and loosens the relaxation state; Figure 10 shows that to be rotated further rotating shaft 33 that axle sleeve 34-1,34-2 enter and collude groove 32-1,32-2, at this moment, helix wheel 31-1,31-2 periphery are in low program control along the point of contact with axle sleeve 34-1,34-2, under the traction of colluding groove 32-1,32-2, valve plate 21 is raised, valve opening.
When the needs throttle down, rotating shaft 33 is rotated with opposite direction, and during beginning, axle sleeve 34-1,34-2 are positioned at and collude groove 32-1,32-2.Figure 10 shows that the rotation along with rotating shaft 33, valve plate 21 is pushed port 42 to; Fig. 9 and Figure 8 shows that and be rotated further rotating shaft 33, helix wheel 31-1,31-2 periphery are moved to elevation position direction by low journey position along the point of contact with axle sleeve 34-1,34-2, cylinder 26 is under the thrusting action of helix wheel 31-1,31-2, by the effect of top back compensator 27, valve plate 21 is pushed to port 42; Figure 7 shows that valve plate 21 and port 42 sealing fit-states, top back compensator is in pressured state, and the helix wheel periphery is in nearly elevation position along last with point of contact axle sleeve 34-1,34-2.
In the opening and closing process of above-mentioned valve, the top of top back compensator 27 is moved back compensation and is had following action principle: when helix wheel 31-1,31-2 make progressive thrusting action by 26 pairs of valve plates 21 of cylinder, along with jacking force increases gradually, described top back compensator can absorb the ceiling capacity in the setting range, top back compensator 27 is along with jacking force reduces gradually when helix wheel 31-1,31-2 gradually move back separating action by 26 pairs of valve plates 21 of cylinder, and slowly release energy, thereby make spool in whole operation process, more steady.
Shown in Figure 11～14, press knob down T, delay switching circuit Q connected by certain time of short duration, at this section in the period of short duration, electromagnetism water valve or water pump 60 to water reservoir 41 inwalls water spray, make water reservoir 41 inwalls keep moistening by high-order water orifice 53, prevent that dirt from gluing wall.Single armed double pendulum round trip switch 71 is when holding state, and D, E and B, one connect, and A, E and C, one disconnect.When running, press knob down S, the interval uses circuit O to connect (twice use has certain set time at interval), and motor just changes, and makes driving lever 63 stir reed 72, and bump fulcrum 74, at this moment, A, E and C ,-connect, B ,-and D, E disconnection.When C, a connection, relay H action, delay switching circuit R connected by the time of setting, and the length control of the on time that electromagnetism water valve or water pump 60 foundations are set is to the water output of water reservoir.When A, E connect, relay J, K action, diode M, N prevent that in circuit electric current from scurrying, along with motor just changes, and described valve opening, to the passage diffluence, through after the several seconds, delay switching circuit P connects all the elements thing in the water reservoir 41 by port 42, the motor counter-rotating, described valve is closed again, when driving lever 63 is stirred reed 72, and bump fulcrum 73, this moment, A, E disconnected, the motor stall.
Detachable manual handle shown in Figure 3 when having a power failure or power plant not being installed, is controlled the keying of described valve.
Claims (11)
1, a kind of helix wheel thruster one-way controllable valve that has top back compensator comprises that spool, valve body reach and the control device of described valve combination, the helix wheels that described spool comprises valve block, is made up of rotating shaft and a pair of helix wheel, described valve body is to have water reservoir, port and coupled logical passage, it is characterized in that wherein said valve block is made up of valve plate, side plate, valve shaft, cylinder, axle sleeve, mounting groove and top back compensator; Described side plate and the valve plate that is positioned at the valve plate both sides is perpendicular; Be provided with a pair of cylinder groove and a pair of valve plate axial trough on the side plate relatively, valve shaft passes the valve plate axial trough movably, is fixed on the valve body; Cylinder passes cylinder groove, is installed on the valve plate and with valve shaft to parallel; The cylinder two ends are rotatably mounted with axle sleeve, and described top back compensator is a resilient member, are installed in the mounting groove; Described helix wheel respectively has one and colludes groove, and when described helix wheels were installed on the valve body by rotating shaft, its helix wheel periphery offseted along the axle sleeve with described cylinder two ends; Along with the rotation of rotating shaft, helix wheel passes through axle sleeve pushing tow valve plate, and does progressive applying or gradually move back separating action to valve body port by means of the effect of top back compensator.
2, the helix wheel thruster one-way controllable valve that has top back compensator as claimed in claim 1 is characterized in that mounting groove is a Baltimore groove, between biside plate, on the valve plate corresponding to cylinder groove.
3, the helix wheel thruster one-way controllable valve that has top back compensator as claimed in claim 1, it is characterized in that, nearly center portion is provided with rotary shaft hole on the channel side wall of described valve body, sidewall near part one side is provided with the valve plate axis hole, described rotating shaft and valve shaft two ends are installed in respectively in rotary shaft hole and the valve plate axis hole, and spool is positioned in the passage of valve body.
4, the helix wheel thruster one-way controllable valve that has top back compensator as claimed in claim 1, its feature in, between the maximum flange on helix wheel periphery edge and minimum flange, locate to be provided with one and collude groove.
5, the helix wheel thruster one-way controllable valve that has top back compensator as claimed in claim 1 is characterized in that the position that described valve body port and valve plate fit is laminated with flexible cushion.
6, the helix wheel thruster one-way controllable valve that has top back compensator as claimed in claim 1 is characterized in that described top back compensator is by resilient members that elastomeric objects constituted such as spring steel plate or springs.
7, the helix wheel thruster one-way controllable valve that has top back compensator as claimed in claim 1, it is characterized in that, the position of rotary shaft hole that on the channel side wall of valve body, is provided with and valve plate axis hole, can make valve in closing closed procedure, along with helix wheel turns to its periphery when nearly maximum flange place and axle sleeve offset, the valve plate on the spool and the applying of the port on the valve body reach the optimal seal state.
8, the helix wheel thruster one-way controllable valve that has top back compensator as claimed in claim 1 is characterized in that, the water reservoir of closet valve body topmost around be provided with tank in the sidewall, tank is provided with a plurality of high-order water orifices towards the water reservoir direction; One end of tank links to each other with outside intake pipe; The port of water reservoir and drainage is connected with the passage of drainage; This port is positioned at water reservoir and passage intersection, and spillway is positioned at the water reservoir sidewall, and its under shed is positioned at below the normality water line, and its upper shed and normality water line are contour.
9, the helix wheel thruster one-way controllable valve that has top back compensator as claimed in claim 1, it is characterized in that, with the control device of described valve combination by power plant, water supply device and a single armed double pendulum round trip switch are formed, power plant are by motor, gear-box and power plant control circuit are formed, water supply device are made up of electromagnetism water valve or water pump and water supply device control circuit, the rotating shaft of spool one end can be inserted in the hollow output shaft of gear-box of power plant, and defend the method for radially inserting described hollow output shaft and rotating shaft hollow output shaft and rotating shaft are fused by dialling, when rotating shaft is rotated, drive driving lever and rotate clockwise and counterclockwise, with the keying of control single armed double pendulum round trip switch.
10, the helix wheel thruster one-way controllable valve that has top back compensator as claimed in claim 1, its feature in, the described group of switching motion of defending control single armed double pendulum round trip switch, dial and defend by driven by motor, signal may command timing circuit, the relay gathered, and supervisory device and power plant are run well, described single armed double pendulum round trip switch comprises two swing arms, four contacts, two fulcrums, described driving lever is when rotating, actuating spring relatively, so that the fulcrum of its bump swing arm, the disconnection or the connection of control contact.
11, the helix wheel thruster one-way controllable valve that has top back compensator as claimed in claim 1 is characterized in that, with the control device of described valve combination be a detachable manual handle that is installed in rotating shaft one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510027387 CN1746543A (en) | 2005-06-30 | 2005-06-30 | One-way controllable valve with spiral wire wheel top push and top back compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510027387 CN1746543A (en) | 2005-06-30 | 2005-06-30 | One-way controllable valve with spiral wire wheel top push and top back compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1746543A true CN1746543A (en) | 2006-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510027387 Pending CN1746543A (en) | 2005-06-30 | 2005-06-30 | One-way controllable valve with spiral wire wheel top push and top back compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1746543A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110710817A (en) * | 2019-07-05 | 2020-01-21 | 中山市佳居家具有限公司 | A seat pedal device |
-
2005
- 2005-06-30 CN CN 200510027387 patent/CN1746543A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110710817A (en) * | 2019-07-05 | 2020-01-21 | 中山市佳居家具有限公司 | A seat pedal device |
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