CN215214342U - Door closer tooth shaft - Google Patents
Door closer tooth shaft Download PDFInfo
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- CN215214342U CN215214342U CN202121476181.7U CN202121476181U CN215214342U CN 215214342 U CN215214342 U CN 215214342U CN 202121476181 U CN202121476181 U CN 202121476181U CN 215214342 U CN215214342 U CN 215214342U
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- tooth
- axle
- shaft
- door closer
- connecting portion
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Abstract
The utility model relates to a tooth axle technical field, concretely relates to door closer tooth axle, including the tooth axle body, tooth axle body integrated into one piece, it includes axle tooth portion, cylinder portion and connecting portion, and the middle part of tooth axle body is equipped with axle tooth portion, the both ends of tooth axle body all are equipped with connecting portion, be equipped with between axle tooth portion and the connecting portion cylinder portion, axle tooth portion's external diameter is greater than the external diameter of cylinder portion, the external diameter of cylinder portion is greater than the external diameter of connecting portion, the periphery of connecting portion is equipped with eight connection teeth that are the ring arrangement uniformly, forms the tooth's socket between the adjacent connection tooth, and the tip of connecting portion is equipped with connecting screw hole. The utility model provides a door closer pinion, structural design is reasonable, can effectively increase the interlock area that position is connected with the rocking arm to the pinion body, and laminating effect is not fragile, can not only strengthen the wrench movement effect between rocking arm and the pinion body, still does benefit to the life who prolongs the product.
Description
Technical Field
The utility model relates to a pinion technical field, concretely relates to door closer pinion.
Background
The door closer is a hydraulic press similar to a spring on the door head, can be released after being compressed after the door is opened, automatically closes the door, has the effect like a spring door, and can ensure that the door is accurately and timely closed to an initial position after being opened. Door closers are currently used primarily in commercial and public buildings.
One end of the door closer tooth shaft is usually connected with the rocker arm, the part of the existing door closer tooth shaft connected with the rocker arm is usually square, the corresponding square hole is arranged on the rocker arm, the torsion is often insufficient by adopting the structural design, and the part of the door closer tooth shaft connected with the rocker arm is easy to damage, so that the service life of the product can be reduced. In view of the above-mentioned shortcomings, the present invention provides an improvement.
Disclosure of Invention
In order to overcome the not enough of background art, the utility model provides a door closer pinion, structural design is reasonable, can effectively increase the interlock area that the position is connected with the rocking arm to the pinion body, and laminating effect is not fragile, can not only strengthen the wrench movement effect between rocking arm and the pinion body, still is favorable to the life of extension product.
The utility model adopts the technical proposal that: the utility model provides a door closer tooth axle, includes the tooth axle body, tooth axle body integrated into one piece, it includes axle tooth portion, cylinder portion and connecting portion, and the middle part of tooth axle body is equipped with axle tooth portion, the both ends of tooth axle body all are equipped with connecting portion, be equipped with between axle tooth portion and the connecting portion cylinder portion, the external diameter of axle tooth portion is greater than the external diameter of cylinder portion, the external diameter of cylinder portion is greater than the external diameter of connecting portion, the periphery of connecting portion is equipped with eight evenly and is the connecting tooth of annular arrangement, forms the tooth's socket between the adjacent connecting tooth, and the tip of connecting portion is equipped with connecting threaded hole.
In order to facilitate processing and effectively enhance the torsion, the cross section of the connecting tooth is in an isosceles trapezoid shape.
Preferably, the cross section of each tooth socket is isosceles trapezoid.
Preferably, the cross section of each tooth socket is in an isosceles triangle shape.
Preferably, the shaft tooth part comprises a shaft tooth and a shaft tooth seat, the shaft tooth seat is arranged at one end of the shaft tooth, and a first chamfer surface is arranged at one end, far away from the shaft tooth seat, of the shaft tooth.
In order to facilitate a better fit of the shaft toothing with the door closer toothed cylinder, the shaft toothing is uniformly provided with 12 shaft teeth arranged in a ring shape.
Preferably, an annular groove is formed between the cylindrical part and the shaft tooth part.
Preferably, a second chamfer surface is arranged between the cylindrical part and the connecting part.
Preferably, the connecting tooth has a top tooth surface and side tooth surfaces, one side tooth surface is arranged on each of two sides of the top tooth surface, and the two side tooth surfaces of the same connecting tooth are perpendicular to each other.
A method for processing a tooth shaft of a door closer comprises the following steps:
(1) pretreatment of raw materials: annealing the cold heading steel wire rod, then carrying out acid washing, phosphorization and saponification surface treatment, and then carrying out drawing treatment;
(2) cutting off and blanking: automatically cutting the cold heading steel wire rod into material sections with certain length through a cutting system on the multi-station cold heading machine, and sequentially feeding the material sections into the multi-station cold heading machine;
(3) cold heading forming: forming a cold heading blank of the door closer gear shaft through cold heading molding of a multi-station cold heading machine;
(4) machining: the groove is turned through the automatic instrument machine tool, the internal thread is tapped through the automatic instrument machine tool, and the outer circle is finely ground through the centerless grinder.
To sum up, the utility model discloses beneficial effect does:
1. the shaft tooth part is matched with a door closer tooth cylinder, the cylindrical parts on two sides of the shaft tooth part play a supporting role, connecting parts are arranged at two ends of a tooth shaft body, a rocker arm can be installed on the connecting part at one end according to actual installation requirements, the connecting parts can be arranged at two ends to enhance the universality of installation, a limiting bolt which plays a limiting role in the rocker arm is installed in a connecting threaded hole at the end part of the connecting part, the rocker arm installed on the connecting part at one end of the tooth shaft body is provided with an octagonal hole matched with the connecting part, namely the connecting part at one end of the tooth shaft body is just clamped into the octagonal hole in the rocker arm, eight connecting teeth which are annularly arranged are uniformly arranged at the periphery of the connecting part, the meshing area of the connecting part of the tooth shaft body and the rocker arm is effectively increased, the laminating effect is good and is not easy to damage, the twisting effect between the rocker arm and the tooth shaft body can be enhanced, and the service life of a product can be prolonged;
2. the cross section of the connecting tooth is in an isosceles trapezoid shape, the tooth shape design is reasonable, the structural strength of the connecting tooth can be ensured, the meshing area connected with the rocker arm can be effectively increased, the torsion can be enhanced, and in addition, the actual processing and forming can be facilitated;
3. the door closer tooth shaft processing method comprises the steps of raw material pretreatment, cutting and blanking, cold heading forming, machining and the like, has reasonable procedures, and can be convenient for producing door closer tooth shafts meeting the actual requirements.
The invention is further described with reference to the accompanying drawings and the detailed description.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a schematic front view of a first embodiment of the present invention;
fig. 3 is a left side schematic view of the first embodiment of the present invention;
FIG. 4 is a schematic structural view of a cold heading blank according to a first embodiment of the present invention;
fig. 5 is a schematic front view of a second embodiment of the present invention;
fig. 6 is a left side schematic view of a second embodiment of the present invention;
the figure marks comprise 1-tooth shaft body, 2-shaft tooth part, 3-cylindrical part, 4-connecting part, 5-connecting tooth, 6-tooth groove, 7-connecting threaded hole, 8-shaft tooth, 9-shaft tooth holder, 10-first chamfer surface, 11-annular groove, 12-second chamfer surface, 13-top tooth surface, 14-side tooth surface, 15-cold heading blank and 16-groove bottom surface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 6 in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to perform more detailed description on the technical solution in the embodiments of the present invention.
As shown in fig. 1 to 6, the door closer tooth shaft disclosed in this embodiment includes a tooth shaft body 1, the tooth shaft body 1 is integrally formed, and includes an axial tooth portion 2, a cylindrical portion 3 and a connecting portion 4, the axial tooth portion 2 is disposed in the middle of the tooth shaft body 1, the connecting portion 4 is disposed at each of two ends of the tooth shaft body 1, the cylindrical portion 3 is disposed between the axial tooth portion 2 and the connecting portion 4, the outer diameter of the axial tooth portion 2 is greater than the outer diameter of the cylindrical portion 3, the outer diameter of the cylindrical portion 3 is greater than the outer diameter of the connecting portion 4, eight connecting teeth 5 annularly arranged are uniformly disposed on the outer periphery of the connecting portion 4, a tooth space 6 is formed between adjacent connecting teeth 5, and a connecting threaded hole 7 is disposed at an end of the connecting portion 4.
In the technical scheme, the shaft tooth part 2 is matched with the door closer tooth cylinder, the cylindrical parts 3 at two sides of the shaft tooth part 2 play a supporting role, the two ends of the tooth shaft body 1 are both provided with the connecting parts 4, the rocker arm can be installed on the connecting part 4 at one end according to actual installation requirements, the connecting parts 4 are arranged at the two ends to enhance the universality of installation, the connecting threaded hole 7 at the end part of the connecting part 4 is provided with the limiting bolt which plays a limiting role on the rocker arm, the rocker arm installed on the connecting part 4 at one end of the tooth shaft body 1 is provided with the octagonal hole matched with the connecting part 4, namely, the connecting part 4 at one end of the tooth shaft body 1 is just clamped into the octagonal hole on the rocker arm, the periphery of the connecting part 4 is uniformly provided with eight connecting teeth 5 which are arranged in an annular shape, the meshing area of the tooth shaft body 1 and the connecting part 4 of the rocker arm is effectively increased, the laminating effect is good and difficult to damage, the twisting effect between the rocker arm and the tooth shaft body 1 can be enhanced, and the service life of the product is prolonged. According to the actual installation requirement, the outer diameter of the shaft tooth part 2 is larger than that of the cylindrical part 3, and the outer diameter of the cylindrical part 3 is larger than that of the connecting part 4, so that the gear shaft body 1 can be conveniently installed on the door closer.
In order to facilitate processing and effectively enhance the torsion, the cross section of the connecting teeth 5 is in an isosceles trapezoid shape. In this embodiment, the cross section of connecting tooth 5 is isosceles trapezoid, and profile of tooth reasonable in design can guarantee connecting tooth 5's structural strength, also can increase effectively with the interlock area that the rocking arm is connected, can strengthen torsion, can also be convenient for actual machine-shaping in addition.
Preferably, the cross section of the tooth slot 6 is isosceles trapezoid. In this embodiment, the cross section of the tooth socket 6 is isosceles trapezoid, the distance between the connecting teeth 5 is larger when the tooth socket 6 adopts the design, the connecting teeth 5 are narrower, the whole tooth form is reasonable in design, the structural strength of the connecting teeth 5 can be ensured, the torsion can be enhanced, and the practical processing and forming are facilitated. When the cross section of the tooth groove 6 is isosceles trapezoid, the tooth groove 6 has a groove bottom 16, in the specific implementation, the groove bottom 16 may be a plane or an arc, and when the groove bottom 16 is an arc, the groove bottoms 16 of the tooth grooves 6 of the connecting portion 4 are located on the same annular surface. The cross section of the tooth grooves 6 is isosceles trapezoid, which is the first embodiment.
Preferably, the cross section of the tooth slot 6 is in an isosceles triangle shape. In this embodiment, the cross section of the tooth socket 6 is in the shape of an isosceles triangle, when the tooth socket 6 adopts the design, the space between the connecting teeth 5 is smaller, the connecting teeth 5 are wider, the whole tooth shape is reasonable in design, the structural strength of the connecting teeth 5 can be ensured, the torsion can be enhanced, and the practical processing and forming are facilitated. The cross section of the tooth grooves 6 is in an isosceles triangle shape to form a second embodiment.
Preferably, the shaft tooth portion 2 includes a shaft tooth 8 and a shaft tooth seat 9, the shaft tooth seat 9 is disposed at one end of the shaft tooth 8, and a first chamfered surface 10 is disposed at one end of the shaft tooth 8 away from the shaft tooth seat 9. In this embodiment, axle tooth portion 2 includes axle tooth 8 and axle tooth seat 9, and structural design is reasonable, can be convenient for axle tooth portion 2 and the better cooperation of door closer tooth section of thick bamboo be connected, and axle tooth 8 keeps away from first chamfer face 10 of the one end setting of axle tooth seat 9 and plays the installation guide effect, can be convenient for actual assembly work.
In order to facilitate a better fit of the axial toothing 2 with the door closer toothing, the axial toothing 2 is uniformly provided with 12 annular axial teeth 8. In this embodiment, axle tooth portion 2 evenly sets up 12 axle teeth 8, and 12 axle teeth 8 are the annular and arrange, and tooth number reasonable in design can be convenient for axle tooth portion 2 and the better cooperation of door closer tooth section of thick bamboo, and then realize the door closer function better.
Preferably, an annular groove 11 is formed between the cylindrical portion 3 and the shaft tooth portion 2. During concrete implementation, cylinder portion 3 and mounting hole direct fit or installation bearing between cylinder portion 3 and the mounting hole, the cylinder portion 3 of both sides is the support position, can play the supporting role well, can make things convenient for the holistic rotation of gear shaft body 1, through add ring channel 11 between cylinder portion 3 and shaft tooth portion 2, both the follow-up processing of having been convenient for, also can make things convenient for actual assembly work. In specific implementation, the requirement on the dimensional tolerance of the cylindrical part 3 is very small, so that the installation precision can be ensured, and the gear shaft body 1 can rotate better.
Preferably, a second chamfer 12 is provided between the cylindrical portion 3 and the connecting portion 4. In the present embodiment, the outer diameter of the cylindrical portion 3 is larger than that of the connecting portion 4, and the installation guide function can be performed by providing the second chamfer surface 12 between the cylindrical portion 3 and the connecting portion 4, which facilitates the actual assembly work. During specific implementation, one end, far away from the cylindrical part 3, of the connecting part 4 can also be provided with a chamfer surface, so that actual assembly can be facilitated. The width of the second chamfer 12 in the axial direction in this embodiment is preferably 2 mm.
Preferably, the coupling tooth 5 has a top flank 13 and side flanks 14, one side flank 14 being provided on each side of the top flank 13, and the two side flanks 14 of one coupling tooth 5 being perpendicular to each other. In the present embodiment, eight coupling teeth 5 are numbered 1 to 8 in order in the clockwise direction along the circumference, two side tooth surfaces 14 of the same coupling tooth 5 are perpendicular to each other, therefore, the connecting teeth 5 with the numbers of 1, 3, 5 and 7 can integrally form a square structure, the connecting teeth 5 with the numbers of 2, 4, 6 and 8 can integrally form a square structure, the existing door closer toothed shaft only has one square structure, the eight connecting teeth 5 adopting the structural design can form two square structures which are superposed together to form a unique octagonal structure, the meshing area of the toothed shaft body 1 and the 4-position connecting part of the rocker arm is greatly increased, the laminating effect is better, the twisting effect between the rocker arm and the toothed shaft body 1 can be effectively enhanced, the eight connecting teeth 5 can disperse stress, so that the connecting parts 4 are not easy to damage, and the service life of the product is prolonged. In specific implementation, the side tooth surfaces 14 are flat surfaces, the top tooth surfaces 13 can be flat surfaces or arc-shaped surfaces, and the top tooth surfaces 13 of the connecting teeth 5 of the connecting part 4 are located on the same annular surface when the top tooth surfaces 13 are arc-shaped surfaces.
In the embodiment, the length of the gear shaft body 1 is preferably 73mm, the maximum outer diameter of the gear shaft part 2 is preferably 24.5mm, the outer diameter of the cylindrical part 3 is preferably 15mm, the width of the connecting part 4 in the axial direction is preferably 6.6mm, the width of the gear shaft part 2 is preferably 25mm, the width of the gear shaft seat 9 is preferably 1.5mm, the width of the annular groove 11 is preferably 2mm, the width of the annular groove 11 can range from 2mm to 2.5mm in specific implementation, and the overall size of the gear shaft body 1 is reasonably designed, so that the actual requirements can be better met.
The embodiment also discloses a method for processing the gear shaft of the door closer, which specifically comprises the following steps:
(1) pretreatment of raw materials: annealing the cold heading steel wire rod, then carrying out acid washing, phosphorization and saponification surface treatment, and then carrying out drawing treatment;
in the steps, the cold heading steel wire rod is a wire rod, so that the wire rod is not cracked in the subsequent drawing and processing, the hardness of the wire rod is reduced by annealing treatment to ensure that the wire rod obtains good plasticity, impurities on the surface of the wire rod can be effectively removed by acid liquor treatment, the wire rod needs to be washed by running water and soaked in a water tank after the acid washing treatment, the running water washing and the water tank soaking aim to remove residual acid liquor on the surface of the material, then the wire rod is subjected to phosphating treatment, the phosphating treatment aims to improve the oxidation resistance of the material, namely to prolong the oxidation time of the material, the wire rod needs to be washed by running water and soaked in the water tank after the phosphating treatment, the running water washing and the water tank soaking aim to remove residual phosphating liquor on the surface of the material, then the wire rod is subjected to saponification treatment, the saponification aim to increase the lubrication degree of the material and facilitate the subsequent drawing, and the wire rod is dried after the saponification treatment, the purpose of air-drying is to carry out drying and solidification on the saponification liquid, and a layer of compact phosphating and saponification layer can be attached to the surface of the wire rod through acid washing, phosphating and saponification surface treatment, so that the surface friction coefficient of the wire rod is reduced, subsequent processing can be facilitated, then the wire rod is subjected to drawing treatment, and the wire rod is drawn on a drawing machine, so that the raw material steel wire rod with a smooth surface and small diameter deviation can be obtained. The acid washing, phosphorization and saponification surface treatment can refer to the prior art. The cold heading steel wire rod belongs to the prior art and is not specifically described herein.
(2) Cutting off and blanking: automatically cutting the cold heading steel wire rod into material sections with certain length through a cutting system on the multi-station cold heading machine, and sequentially feeding the material sections into the multi-station cold heading machine;
in the steps, the cutting system can automatically cut the steel wire for cold heading into the material section with a certain length, the length of the material section can be adjusted according to actual requirements, and the material section fed into the multi-station cold heading machine sequentially is convenient to process next step. The cutting system is prior art and will not be described in detail herein.
(3) Cold heading forming: forming a cold heading blank 15 of the door closer gear shaft through cold heading molding of a multi-station cold heading machine;
in the above steps, the material section formed in the previous step needs to be subjected to continuous extrusion forming through a plurality of stations on a multi-station cold header, and the method can be carried out as follows: and cold heading processing, namely upsetting and shaping a cut surface, forming a cylindrical part 3 by using forced forming or reducing forming, performing beam teeth and finally forming beam teeth to form a shaft tooth part 2, performing beam teeth and finally forming beam teeth to form a connecting part 4, and the like, wherein a cold heading blank 15 of the door closer gear shaft can be finally produced through a plurality of extrusion deformation processes. The model number of the multi-station cold header of the embodiment is 206, which can refer to the prior art and will not be further described herein. The cold heading forming process can refer to the prior art.
(4) Machining: the groove is turned through the automatic instrument machine tool, the internal thread is tapped through the automatic instrument machine tool, and the outer circle is finely ground through the centerless grinder.
In the above-mentioned step, through automatic instrument lathe to cold-heading blank turning groove, firstly process out the ring channel 11 of 2 both sides in axle tooth portion, secondly at 1 tip processing hole groove of tooth axle body, rethread automatic instrument lathe tap internal thread just can form connecting thread hole 7, and the rethread centerless grinder makes the dimensional tolerance of cylinder portion 3 satisfy actual processing demand to cylinder portion 3 correct grinding excircle at last. Because the dimensional tolerance requirement of cylinder portion 3 is very little, so adopt centerless grinder to the cylindrical portion 3 correct grinding excircle, can guarantee the installation accuracy like this, can make gear shaft body 1 rotate better, be favorable to satisfying actual demand better. The model of the automatic instrument machine tool in this embodiment is CJ0625, which can refer to the prior art and will not be further described herein. The centerless grinder belongs to the prior art, and is not specifically described herein.
The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concept is not limited to this embodiment, and any modification that utilizes the inventive concept is intended to be within the scope of the present patent application.
Claims (9)
1. The utility model provides a door closer tooth axle, includes the tooth axle body, its characterized in that, tooth axle body integrated into one piece, it includes axle tooth portion, cylinder portion and connecting portion, and the middle part of tooth axle body is equipped with axle tooth portion, the both ends of tooth axle body all are equipped with connecting portion, be equipped with between axle tooth portion and the connecting portion cylinder portion, the external diameter of axle tooth portion is greater than the external diameter of cylinder portion, the external diameter of cylinder portion is greater than the external diameter of connecting portion, the periphery of connecting portion is equipped with eight uniformly and is the connecting tooth of annular arrangement, forms the tooth's socket between the adjacent connecting tooth, and the tip of connecting portion is equipped with connecting threaded hole.
2. The door closer pinion according to claim 1, wherein the connecting teeth have an isosceles trapezoid cross section.
3. A door closer pinion according to claim 2, wherein the tooth slots are isosceles trapezoids in cross-section.
4. A door closer pinion according to claim 2, wherein the tooth slots are isosceles triangular in cross-section.
5. A door closer toothed shaft according to claim 3 or 4, wherein the shaft toothed portion comprises a shaft tooth and a shaft tooth seat, the shaft tooth seat is arranged at one end of the shaft tooth, and the end of the shaft tooth far away from the shaft tooth seat is provided with a first chamfered surface.
6. A door closer toothed shaft according to claim 5, wherein the toothed shaft portion is uniformly provided with 12 annularly arranged toothed shafts.
7. A door closer pinion according to claim 6, wherein an annular groove is provided between the cylindrical portion and the pinion portion.
8. A door closer pinion according to claim 7, in which a second chamfered surface is provided between the cylindrical portion and the connecting portion.
9. A door closer pinion according to claim 8, wherein the coupling tooth has a top flank and a side flank, one on each side of the top flank, the two side flanks of a common coupling tooth being perpendicular to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121476181.7U CN215214342U (en) | 2021-06-30 | 2021-06-30 | Door closer tooth shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121476181.7U CN215214342U (en) | 2021-06-30 | 2021-06-30 | Door closer tooth shaft |
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| Publication Number | Publication Date |
|---|---|
| CN215214342U true CN215214342U (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121476181.7U Active CN215214342U (en) | 2021-06-30 | 2021-06-30 | Door closer tooth shaft |
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| CN (1) | CN215214342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294428A (en) * | 2021-06-30 | 2021-08-24 | 乐清市强特紧固件制造有限公司 | Door closer gear shaft and machining method thereof |
-
2021
- 2021-06-30 CN CN202121476181.7U patent/CN215214342U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294428A (en) * | 2021-06-30 | 2021-08-24 | 乐清市强特紧固件制造有限公司 | Door closer gear shaft and machining method thereof |
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