CN105736815A - Bathtub water discharging valve - Google Patents
Bathtub water discharging valve Download PDFInfo
- Publication number
- CN105736815A CN105736815A CN201610314708.3A CN201610314708A CN105736815A CN 105736815 A CN105736815 A CN 105736815A CN 201610314708 A CN201610314708 A CN 201610314708A CN 105736815 A CN105736815 A CN 105736815A
- Authority
- CN
- China
- Prior art keywords
- piston
- cylinder chamber
- push rod
- valve
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/46—Mechanical actuating means for remote operation
- F16K31/465—Mechanical actuating means for remote operation by flexible transmission means, e.g. cable, chain, bowden wire
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/22—Outlet devices mounted in basins, baths, or sinks
- E03C1/23—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms
- E03C1/2304—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms the actuation force being transmitted to the plug via flexible elements, e.g. chain, Bowden cable
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/124—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/14—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves
- F16K31/143—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves the fluid acting on a piston
Abstract
The invention provides a bathtub water discharging valve, and relates to the technical field of the bathtub water discharging valve which is arranged at the bottom of a bathtub and is used for water discharge control. The bathtub water discharging valve solves the technical defects of small opening amplitude and low water discharging speed of the existing bathtub water discharging valve. A hydraulic jacking mechanism used for jacking a valve body to open is also arranged in an inner cavity of a valve casing; the hydraulic jacking mechanism comprises a hydraulic cylinder; a first cylinder cavity and a second cylinder cavity with the diameter being greater than the first cylinder cavity are arranged in the hydraulic cylinder; a first piston is arranged in the first cylinder cavity; a second piston is arranged in the second cylinder cavity; a position between the first piston and the second piston is filled with hydraulic oil in a sealing way; the first piston is connected with the valve body through a first piston push rod; the second piston is connected with a linkage control mechanism; when the carrying area of the second cylinder cavity is twice the first cylinder cavity, the second piston is pushed for 5mm, the first piston is pushed for 10mm by oil pressure, the stroke is doubled, and the water discharge flow rate is increased. High reliability is still realized in a water discharge pipeline with severe work environment.
Description
Technical field
The present invention relates to and be installed on bath base for bathtub drain valve technical field that draining controls.
Background technology
With reference to shown in Fig. 1, it is directly connected to by coordinated signals mechanism 3a between valve body and the control knob 2a in bath side walls in the valve chest 1a of existing bathtub drain valve, the stroke that control knob 2a presses is identical with the stroke of coordinated signals mechanism 3a driving valve body action, such as: when control knob 2a presses down 5 millimeters, coordinated signals mechanism 3a drives the stroke of valve body action to be 5 millimeters, and the close closure body 4a of valve body upwards bounces up 5 millimeters.Existing bathtub drain valve unlatching amplitude is little, and drainage speed is slow.
Summary of the invention
In sum, it is an object of the invention to solve existing bathtub drain valve unlatching amplitude little, the technical deficiency that drainage speed is slow, and a kind of bathtub drain valve is proposed.
For solving technical problem proposed by the invention, the technical scheme adopted is: a kind of bathtub drain valve, include valve chest and the valve body being located in valve chest water inlet, it is characterised in that: the inner chamber of described valve chest is additionally provided with the hydraulic climbing mechanism opened for jacking valve body；Described hydraulic climbing mechanism includes hydraulic cylinder, the first cylinder chamber and the diameter second cylinder chamber more than the first cylinder chamber it is provided with in hydraulic cylinder, first cylinder chamber and second cylinder chamber are in series, first piston and the second piston it is respectively equipped with in first cylinder chamber and second cylinder chamber, seal between first piston and the second piston and be filled with hydraulic oil, first piston is connected with valve body by first piston push rod, second piston is connected to for driving the second piston to move in second cylinder chamber, and hydraulic oil in second cylinder chamber is advanced into the coordinated signals mechanism in the first cylinder chamber.
The first described cylinder chamber and second cylinder chamber are upper and lower cascaded structure；The inner chamber of hydraulic cylinder is up-small and down-big ledge structure.
The first described cylinder chamber and second cylinder chamber are side-by-side series structure, and the first cylinder chamber communicates with the bottom end opening of second cylinder chamber.
Described coordinated signals mechanism includes rigidity rope, and rigidity rope one end is placed in second cylinder chamber and connects the second piston, and the other end connects draining and controls button；Control to be additionally provided with, between button and the outer wall of hydraulic cylinder, the rigidity supporting sleeve being socketed on rigidity rope in draining.
Described first piston push rod is provided with back-moving spring between first piston and the first cylinder cavity wall.
Described valve body is spring drain valve.
Described valve body includes the tight lock tube threadeded with valve chest, tight lock tube inwall is provided with spool support, spool carriage center includes fairlead, push rod it is provided with in fairlead, push rod bottom and the socket of described first piston push rod top, push rod bottom fixed cover is connected to the rotation actuating sleeve with ratchet, fairlead inwall is provided with the guiding bar-shaped trough coordinated with the ratchet rotating actuating sleeve, fairlead upper end open is provided with end cap, end cap is provided with edge under the zigzag coordinated with the ratchet rotating actuating sleeve, push rod is socketed with push rod back-moving spring between end cap and rotation actuating sleeve, push rod top is connected to elastic valve and seals cap assemblies after extending end cap.
Described elastic valve seals cap assemblies and includes close closure body, close closure body bottom surface is connected to guide-localization sleeve, valve gap spring it is provided with in guide-localization sleeve, valve gap spring bottom end is connected to push rod clamping joint, push rod top is through guide-localization sleeve bottom end opening and push rod clamping joint clamping, and guide-localization sleeve bottom is additionally provided with the guiding foot being inserted on spool support.
The invention have the benefit that the present invention connects valve body in coordinated signals mechanism by hydraulic climbing mechanism, the second piston in major diameter second cylinder chamber is driven to advance by coordinated signals mechanism, hydraulic oil in second cylinder chamber is pushed in minor diameter the first cylinder chamber by the second piston, under the effect of oil pressure, the first piston in the first cylinder chamber is accelerated boosts；The section of such as second cylinder chamber amasss when being the first cylinder chamber twice, can accomplish that the second piston advances 5 millimeters in second cylinder chamber, first piston is advanced 10 millimeters by oil pressure, that is to say first piston push rod upwards jacking 10 millimeters, the stroke of coordinated signals mechanism driving valve body action is double, and drain discharge increases；The present invention still has good reliability in the drainage pipeline of work under bad environment.
Accompanying drawing explanation
Fig. 1 is structural representation during bathtub drain valve installation；
Fig. 2 is the perspective view of the present invention；
Fig. 3 is the plan structure schematic diagram of the present invention；
Fig. 4 is the A-A sectional structure schematic diagram of Fig. 3；
Fig. 5 is the B-B sectional structure schematic diagram of Fig. 3；
Fig. 6 is the decomposition texture schematic diagram of the present invention；
Fig. 7 is the internal structure schematic diagram of the present invention；
Fig. 8 is the decomposition texture schematic diagram of Fig. 7；
Fig. 9 is the valve body perspective view of the present invention；
Figure 10 is the decomposition texture schematic diagram one of Fig. 9；
Figure 11 is the decomposition texture schematic diagram two of Fig. 9；
Figure 12 is Fig. 9 sectional structure schematic diagram when decomposing；
Figure 13 is the perspective view of the another kind of hydraulic climbing mechanism that the present invention adopts；
Figure 14 is the cross section structure schematic diagram of the another kind of hydraulic climbing mechanism that the present invention adopts.
Detailed description of the invention
Below in conjunction with accompanying drawing and currently preferred specific embodiment, the structure of the present invention is further described.
Shown in Fig. 8, bathtub drain valve of the present invention, include valve chest 1 and the valve body 2 being located in valve chest 1 water inlet, the inner chamber of described valve chest 1 is additionally provided with the hydraulic climbing mechanism 3 opened for jacking valve body 2.Described hydraulic climbing mechanism 3 includes hydraulic cylinder 31, is provided with the first cylinder chamber 32 and the diameter second cylinder chamber 33 more than the first cylinder chamber 32 in hydraulic cylinder 31, and the first cylinder chamber 32 is in series with second cylinder chamber 33；The first cylinder chamber 32 and second cylinder chamber 33 specifically can be adopted in upper and lower cascaded structure；The inner chamber of hydraulic cylinder 31 is up-small and down-big ledge structure.It is respectively equipped with first piston 34 and the second piston 35 in first cylinder chamber 32 and second cylinder chamber 33, seals between first piston 34 and the second piston 35 and be filled with hydraulic oil；First piston 34 is connected with valve body 2 by first piston push rod 341, and first piston push rod 341 is provided with back-moving spring 342 between first piston 34 and the first cylinder chamber 31 inwall.Second piston 35 is connected to for driving the second piston 35 to move in second cylinder chamber 33, and hydraulic oil in second cylinder chamber 33 is advanced into the coordinated signals mechanism 4 in the first cylinder chamber 32.
Work process is: coordinated signals mechanism 4 drives the second piston 35 to boost in second cylinder chamber 33, in second cylinder chamber 33, hydraulic oil flows in the first cylinder chamber 32, under the oil pressure effect of hydraulic oil, first piston 34 in first cylinder chamber 32 is accelerated boosts, first piston push rod 341 also speeds up upwards jacking, thus controlling valve body 2 opening water discharge.
Coordinated signals mechanism 4 includes rigidity rope 42, and rigidity rope 42 one end is placed in second cylinder chamber 33 and connects the second piston 35, and the other end connects draining and controls button；Control to be additionally provided with, between button and the outer wall of hydraulic cylinder 31, the rigidity supporting sleeve 41 being socketed on rigidity rope 42 in draining；Under the supporting role of rigidity supporting sleeve 41, when rigidity rope 42 is to propelling in second cylinder chamber 33, the second piston 35 is moved upward；In specific implementation process, it is also possible to pull swing arm by rigidity rope 42, swing arm piston rod is promoted to drive the second piston 35.
With reference to shown in Fig. 4 to Figure 12, valve body 2 can be spring drain valve, it is achieved effect be: when being subject to first piston push rod 341 first time effectively jacking, valve body 2 is opened, and is held open state；When being once again subjected to the 341 effective jacking of first piston push rod, valve body 2 is closed, and keeps close valve state, iterative cycles to open or close state switching；It is similar to refill for ball-point pen pressing and bounces up mechanism.
The concrete structure of valve body 2 includes the tight lock tube 21 threadeded with valve chest 1, and tight lock tube 21 inwall is provided with spool support 22, is threadeded with spool support 22 center by screw head in the top of hydraulic cylinder 31；Spool support 22 center includes fairlead 221, push rod 23 it is provided with in fairlead 221, push rod 23 bottom and the socket of described first piston push rod 341 top, push rod 23 bottom fixed cover is connected to the rotation actuating sleeve 24 with ratchet, fairlead 221 inwall is provided with the guiding bar-shaped trough coordinated with the ratchet rotating actuating sleeve 24, fairlead 23 upper end open is provided with end cap 25, end cap 25 is provided with under the zigzag coordinated with the ratchet rotating actuating sleeve 24 along 251, push rod 23 is socketed with push rod back-moving spring between end cap 25 and rotation actuating sleeve 24, push rod 23 top connects after extending end cap 25；When the ratchet rotating actuating sleeve 24 follows push rod 23 by upwards jacking process, rotate the ratchet of actuating sleeve 24 to be rotated actuating sleeve 24 by cutting sth. askew along 251 under end cap 25 zigzag under active force and rotate respective angles, after first piston push rod 341 resets downwards, the ratchet rotating actuating sleeve 24 falls into the end position of guiding bar-shaped trough, and push rod 23 keeps jacking state；Again being cut sth. askew after active force backspin turns respective angles along 251 under jacking and zigzag when rotating actuating sleeve 24, the ratchet rotating actuating sleeve 24 falls into guiding bar-shaped trough, and push rod 23 declines, and valve elastic valve seals cap assemblies 26 and falls, valve closing.
Elastic valve seals cap assemblies 26 and includes close closure body 261, close closure body 261 bottom surface is connected to guide-localization sleeve 262, valve gap spring 263 it is provided with in guide-localization sleeve 262, valve gap spring 263 bottom is connected to push rod clamping joint 264,262 bottom end openings and push rod clamping joint 264 clamping are overlapped through guide-localization in push rod 23 top, are additionally provided with the guiding foot being inserted on spool support 22 bottom guide-localization sleeve 262.
With reference to shown in Fig. 4, Figure 13 and Figure 14, hydraulic cylinder 31 internal structure of the present invention is it may also is that the first cylinder chamber 32 and second cylinder chamber 33 are in side-by-side series structure, and the first cylinder chamber 32 communicates with the bottom end opening of second cylinder chamber 33；When advancing downwardly under the second piston 35 in second cylinder chamber 33 is by coordinated signals mechanism 4 effect, the first piston 34 in the first cylinder chamber 32 accelerates to boost equally, reaches the technique effect identical in upper and lower cascaded structure with second cylinder chamber 33 with above-mentioned first cylinder chamber 32.
Claims (8)
1. a bathtub drain valve, includes valve chest and the valve body being located in valve chest water inlet, it is characterised in that: the inner chamber of described valve chest is additionally provided with the hydraulic climbing mechanism opened for jacking valve body；Described hydraulic climbing mechanism includes hydraulic cylinder, the first cylinder chamber and the diameter second cylinder chamber more than the first cylinder chamber it is provided with in hydraulic cylinder, first cylinder chamber and second cylinder chamber are in series, first piston and the second piston it is respectively equipped with in first cylinder chamber and second cylinder chamber, seal between first piston and the second piston and be filled with hydraulic oil, first piston is connected with valve body by first piston push rod, second piston is connected to for driving the second piston to move in second cylinder chamber, and hydraulic oil in second cylinder chamber is advanced into the coordinated signals mechanism in the first cylinder chamber.
2. a kind of bathtub drain valve according to claim 1, it is characterised in that: the first described cylinder chamber and second cylinder chamber are upper and lower cascaded structure；The inner chamber of hydraulic cylinder is up-small and down-big ledge structure.
3. a kind of bathtub drain valve according to claim 1, it is characterised in that: the first described cylinder chamber and second cylinder chamber are side-by-side series structure, and the first cylinder chamber communicates with the bottom end opening of second cylinder chamber.
4. a kind of bathtub drain valve according to claim 1, it is characterised in that: described coordinated signals mechanism includes rigidity rope, and rigidity rope one end is placed in second cylinder chamber and connects the second piston, and the other end connects draining and controls button；Control to be additionally provided with, between button and the outer wall of hydraulic cylinder, the rigidity supporting sleeve being socketed on rigidity rope in draining.
5. a kind of bathtub drain valve according to claim 1, it is characterised in that: described first piston push rod is provided with back-moving spring between first piston and the first cylinder cavity wall.
6. a kind of bathtub drain valve according to claim 1, it is characterised in that: described valve body is spring drain valve.
7. a kind of bathtub drain valve according to claim 6, it is characterized in that: described valve body includes the tight lock tube threadeded with valve chest, tight lock tube inwall is provided with spool support, spool carriage center includes fairlead, push rod it is provided with in fairlead, push rod bottom and the socket of described first piston push rod top, push rod bottom fixed cover is connected to the rotation actuating sleeve with ratchet, fairlead inwall is provided with the guiding bar-shaped trough coordinated with the ratchet rotating actuating sleeve, fairlead upper end open is provided with end cap, end cap is provided with edge under the zigzag coordinated with the ratchet rotating actuating sleeve, push rod is socketed with push rod back-moving spring between end cap and rotation actuating sleeve, push rod top is connected to elastic valve and seals cap assemblies after extending end cap.
8. a kind of bathtub drain valve according to claim 7, it is characterized in that: described elastic valve seals cap assemblies and includes close closure body, close closure body bottom surface is connected to guide-localization sleeve, valve gap spring it is provided with in guide-localization sleeve, valve gap spring bottom end is connected to push rod clamping joint, push rod top is through guide-localization sleeve bottom end opening and push rod clamping joint clamping, and guide-localization sleeve bottom is additionally provided with the guiding foot being inserted on spool support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610314708.3A CN105736815B (en) | 2016-05-13 | 2016-05-13 | A kind of bathtub drain valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610314708.3A CN105736815B (en) | 2016-05-13 | 2016-05-13 | A kind of bathtub drain valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105736815A true CN105736815A (en) | 2016-07-06 |
| CN105736815B CN105736815B (en) | 2018-05-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610314708.3A Active CN105736815B (en) | 2016-05-13 | 2016-05-13 | A kind of bathtub drain valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105736815B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906076A (en) * | 2017-12-28 | 2018-04-13 | 中国铁道科学研究院铁道科学技术研究发展中心 | A kind of heavy load and the compression spring self-resetting oil cylinder and assembly technology in limited lifting space |
| CN109629629A (en) * | 2018-12-05 | 2019-04-16 | 广州大学 | A kind of bathroom water collection system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434489Y (en) * | 2000-06-30 | 2001-06-13 | 陶靖 | Foot control drainage valve |
| US20060000015A1 (en) * | 2001-06-21 | 2006-01-05 | Scott Duncan | Pneumatically actuated drain stopper system and apparatus |
| CN101395419A (en) * | 2006-01-24 | 2009-03-25 | 阿利亚克斯研究发展公司 | Hydraulic control device |
| CN103362190A (en) * | 2012-03-30 | 2013-10-23 | 李飞宇 | Drainage mechanism |
| CN204001108U (en) * | 2014-07-30 | 2014-12-10 | 赵玉娟 | A kind of drain valve structure |
| CN205745591U (en) * | 2016-05-13 | 2016-11-30 | 深圳市金合联投资有限公司 | A kind of bathtub drain valve |
-
2016
- 2016-05-13 CN CN201610314708.3A patent/CN105736815B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434489Y (en) * | 2000-06-30 | 2001-06-13 | 陶靖 | Foot control drainage valve |
| US20060000015A1 (en) * | 2001-06-21 | 2006-01-05 | Scott Duncan | Pneumatically actuated drain stopper system and apparatus |
| CN101395419A (en) * | 2006-01-24 | 2009-03-25 | 阿利亚克斯研究发展公司 | Hydraulic control device |
| CN103362190A (en) * | 2012-03-30 | 2013-10-23 | 李飞宇 | Drainage mechanism |
| CN204001108U (en) * | 2014-07-30 | 2014-12-10 | 赵玉娟 | A kind of drain valve structure |
| CN205745591U (en) * | 2016-05-13 | 2016-11-30 | 深圳市金合联投资有限公司 | A kind of bathtub drain valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906076A (en) * | 2017-12-28 | 2018-04-13 | 中国铁道科学研究院铁道科学技术研究发展中心 | A kind of heavy load and the compression spring self-resetting oil cylinder and assembly technology in limited lifting space |
| CN107906076B (en) * | 2017-12-28 | 2023-09-19 | 中国铁道科学研究院铁道科学技术研究发展中心 | Pressure spring self-resetting oil cylinder with heavy load and limited lifting space and assembly process |
| CN109629629A (en) * | 2018-12-05 | 2019-04-16 | 广州大学 | A kind of bathroom water collection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105736815B (en) | 2018-05-25 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 518000 Guangdong city of Shenzhen province Futian District Che Kung Temple Tairan Tairan 8 road building 17C02 unit Applicant after: Shenzhen Jinhe Supply Chain Technology Co., Ltd. Address before: 518040 Guangdong city of Shenzhen province Futian District Che Kung Temple Tairan Tairan 8 road building 17C02 unit Applicant before: SHENZHEN JINHELIAN INVESTMENT CO., LTD. |
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| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A drainage valve for bathtub Effective date of registration: 20201228 Granted publication date: 20180525 Pledgee: Shenzhen SME financing Company limited by guarantee Pledgor: UNIND (Shenzhen) Co.,Ltd. Registration number: Y2020990001519 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong Shenzhen Futian District Che Kung Temple 17C02 8 unit Tai ran building Patentee after: Shenzhen jinhelian Technology Co.,Ltd. Address before: 518000 Guangdong Shenzhen Futian District Che Kung Temple 17C02 8 unit Tai ran building Patentee before: UNIND (SHENZHEN) Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |