CN1230624A - Hydraulic damping door closer - Google Patents
Hydraulic damping door closer Download PDFInfo
- Publication number
- CN1230624A CN1230624A CN 98111919 CN98111919A CN1230624A CN 1230624 A CN1230624 A CN 1230624A CN 98111919 CN98111919 CN 98111919 CN 98111919 A CN98111919 A CN 98111919A CN 1230624 A CN1230624 A CN 1230624A
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- CN
- China
- Prior art keywords
- piston
- crown
- hardness
- door closer
- tooth axle
- 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.)
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Abstract
The door closer includes a casing, a piston, an energy accumulator, a flat lever, a toothed shaft, a non-return valve and a speed regulating lever, and features that the toothed shaft includes toothed rod and tooth crown fixed on the toothed rod and that the material of the tooth crown has different hardness from that of the rack in the piston. In the present invention, the tooth crown in the toothed shaft meshes with the rack in the piston appropriately.
Description
The present invention relates to a kind of door closer, particularly a kind of hydraulic damping door closer.
Existing door closer generally all adopts the Hydrautic damping buffering method, it is by assistor, one way valve, piston, choke valve, the micro hydraulic system that structures such as accumulator constitute, its principle roughly is such: when opening the door, flat bar clockwise rotates, piston is moved to the left, the compression spring energy-storage, hydraulic oil in the piston left chamber flows into the right chamber of piston by the one way valve of opening, open the door after the release, the compression spring releases energy, and piston moves right, closed check valve, hydraulic oil flows into piston left chamber through choke valve, and flat bar rotates counterclockwise, and door is realized closing automatically.Hydraulic oil is regulated by speed control rod from the big I of flow that the right chamber of piston flows into left chamber, thus the speed that control is closed the door.In this door closer, the tooth axle that is meshed with the piston upper rack is made up of ratch and crown, and it is to process through eight procedures on same blank.Because this tooth axle construction is comparatively complicated, technological requirement is higher, and the location benchmark is changeable, thereby on tooth axle finished product, cause 2 ° 30 ' give the pressure angle error, two square end parallelism are 0.08, the conformity error of moving about the tooth axle is 28 ' and, cause the qualification rate of product very low.Another deficiency of this tooth axle is that the hardness of the hardness of crown on the tooth axle and piston upper rack is suitable, both hard cooperations make it in quadrature straight-tooth engaged transmission, making flank of tooth contact area because of the mismachining tolerance of objective reality is 50%, and mechanism kinematic is not steady, operation defective such as creep; Through No. 100,000 switch door tests, tooth surface abrasion is 0.75mm, and door closer destroys fully, can not use.
It is easy that purpose of the present invention designs a kind of processing exactly, assembly precision height, good, the economical and practical hydraulic damping door closer of tooth axle meshing quality.
The objective of the invention is to realize by following structure, housing, piston, accumulator, flat bar, tooth axle have been the present invention includes, one way valve and speed control rod is characterized in that: the tooth axle includes ratch and solid crown on ratch, and the hardness of the hardness of crown material and piston upper rack material is different.In making tooth axle process, in order to guarantee the teleparallelism of ratch two square end, process simultaneously with two square end of the compound tool that designs ratch, die casting crown in the special mould will be positioned over behind ratch one end that the process location, crown once is shaped on ratch, so only needs six procedures just can finish, the tooth axle of making give the pressure angle error be 30 ', two square end parallelism are 0.01, about the action conformity error be 6 '; The hardness of crown material is different from the hardness of piston upper rack material, form the soft or hard cooperation that crown contacts with the piston upper rack, can make crown with the engagement running-in of piston upper rack in break-in voluntarily, flank of tooth contact area is 70%, through No. 30.6 ten thousand switch door tests, tooth surface abrasion is 0.057mm, and the present invention still can normally use, and increases the service life greatly.
The present invention compared with prior art has following advantage:
1. process easy, the assembly precision height;
2. crown on the tooth axle and the tooth bar meshing quality on the piston are good;
3. product qualified rate height, low price, long service life.
Description of drawings of the present invention is as follows:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the left side view of Fig. 1;
Fig. 3 is the structural representation of tooth axle.
Among the figure: 1. flat bar; 2. tooth axle; 3. compression spring; 4. housing; 5. piston; 6. one way valve; 7. speed control rod; 8. supporting is covered; 9. ratch; 10. crown.
The invention will be further described below in conjunction with drawings and Examples:
As shown in Figure 1, housing 4, piston 5, accumulator 3, flat bar 1, tooth axle 2 have been the present invention includes, one way valve 6 and speed control rod 7 is characterized in that: tooth axle 2 includes ratch 9 and solid crown 10 on ratch 9, and the hardness of the hardness of crown 10 materials and piston 5 upper rack materials is different.As shown in Figure 2.In making tooth axle process, in order to guarantee the teleparallelism of 9 liang of square end of ratch, process simultaneously with two square end of the compound tool that designs ratch 9, die casting crown 10 in the special mould will be positioned over behind ratch 9 one ends that the process location, crown 10 once is shaped on ratch 9, the tooth axle of making give press angle error be 30 ', two square end parallelism are 0.01, about the action conformity error be 6 '; The every technical indicator contrast of existing tooth axle and the present invention is as shown in table 1.
Table 1:
| Project kind | Two ends side's collimation | About the action conformity error | Give the pressure angle error | Make complexity coefficient |
| Existing tooth axle | ???0.08 | ?????28′ | ????2°30′ | ????1 |
| The present invention | ???0.01 | ?????6′ | ??????30′ | ????0.7 |
The hardness of crown 10 materials is different from the hardness of piston 5 upper rack materials, form the soft or hard cooperation that crown 10 contacts with piston 5 upper racks, can make crown 10 with the engagement running-in of piston 5 upper racks in break-in voluntarily, overcome tooth alignment error, it is 70% that flank of tooth contact area increases, and improves meshing quality.The hardness of crown 10 materials can be lower than the hardness of piston 5 upper rack materials, and its hardness differs 60HB～130HB.Tooth bar on the piston 5 and ratch 9 can be used the Fine Steel Casting iron manufacturing, to keep its good and enough rigidity abrasion resistance; Crown 10 can carry out die casting with the SJ3 new zinc alloy that hardness is lower than piston 5 upper racks, brings into play all good characteristics of damping property, casting character and processing characteristics of this alloy, to guarantee the meshing quality of crown 10 and piston 5 upper racks, improves contact precision.Through the test of 30.6 ten thousand switch doors, tooth surface abrasion is 0.057mm, and the present invention still can normally use, and increases the service life greatly.Now that existing tooth axle and every economic and technical norms contrast of the present invention is as shown in table 2.
Table 2:
| Project kind | Tooth surface abrasion (mm) | Final result | Flank of tooth contact area | The manufacturing cost coefficient | Manufacturing procedure (road) | Application life (ten thousand times) |
| Existing tooth axle | ???0.75 | Destroy | ??30％ | ??1.00 | ????8 | ????10 |
| The present invention | ???0.057 | Normally | ??70％ | ??0.65 | ????6 | ????30.6 |
Claims (2)
1, a kind of hydraulic damping door closer, it includes housing (4), piston (5), accumulator (3), flat bar (1), tooth axle (2), one way valve (6) and speed control rod (7), it is characterized in that: tooth axle (2) includes ratch (9) and solid crown (10) on ratch (9), and the hardness of the hardness of crown (10) material and piston (5) upper rack material is different.
2, hydraulic damping door closer as claimed in claim 1 is characterized in that: the hardness of crown (10) material is lower than the hardness of piston (5) upper rack material, and its hardness differs 60HB～130HB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98111919 CN1230624A (en) | 1998-03-26 | 1998-03-26 | Hydraulic damping door closer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98111919 CN1230624A (en) | 1998-03-26 | 1998-03-26 | Hydraulic damping door closer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1230624A true CN1230624A (en) | 1999-10-06 |
Family
ID=5221803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98111919 Pending CN1230624A (en) | 1998-03-26 | 1998-03-26 | Hydraulic damping door closer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1230624A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9995076B1 (en) | 2001-07-13 | 2018-06-12 | Steven M. Hoffberg | Intelligent door restraint |
-
1998
- 1998-03-26 CN CN 98111919 patent/CN1230624A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9995076B1 (en) | 2001-07-13 | 2018-06-12 | Steven M. Hoffberg | Intelligent door restraint |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |