CN203641444U - Helical gear for camshaft - Google Patents
Helical gear for camshaft Download PDFInfo
- Publication number
- CN203641444U CN203641444U CN201320723702.3U CN201320723702U CN203641444U CN 203641444 U CN203641444 U CN 203641444U CN 201320723702 U CN201320723702 U CN 201320723702U CN 203641444 U CN203641444 U CN 203641444U
- Authority
- CN
- China
- Prior art keywords
- wheel disc
- isosceles triangle
- hole
- gear disc
- rivet
- 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.)
- Expired - Fee Related
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- Gears, Cams (AREA)
Abstract
The utility model discloses a helical gear for a camshaft. The helical gear for the camshaft is formed through injection, and includes a gear disc (1), wherein helical teeth (2) are arranged around the peripheral edge of the gear disc (1); six to ten radially distributed isosceles triangular holes (4) are formed in the gear disc (1) and around a through hole (3), and the center of the gear disc, the vertex of each isosceles triangle and the midpoint of the bottom edge of the same isosceles triangle are sequentially located on the same straight line; a strip-shaped groove (5) is formed in the front surface of the gear disc and between every two adjacent isosceles triangular holes; the two sides (4a) of each isosceles triangular hole are respectively parallel to the closest strip-shaped groove, the distance between each side and the closest strip-shaped groove is L, and L is smaller than 10 millimeters and larger than 5 millimeters; a rivet (7) integrally formed with the gear disc is arranged on the back of the gear disc; rivet through holes (6) are further formed in the gear disc. Under the premise of the maximum weight reduction, the flatness of the gear disc end surfaces is ensured during injection forming; the installation is convenient, so as to reduce the manufacture cost.
Description
Technical field
The utility model relates to a kind of helical gear being sleeved on camshaft, belongs to mechanical transmissioning technology field.
Background technique
Be the conventional component of mechanical transmission for the helical gear of camshaft, the existing helical gear for camshaft is divided into two kinds of metal material and plastic materials.The helical gear for camshaft of plastic material adopts molding and forming conventionally, for alleviating pts wt, conventionally the Thickness Design of camshaft inner ring is become with the thickness of outer ring not etc., between Internal and external cycle, form step (being seam), still, such fixing structure, in molding and forming, easily cause the whole helical gear end face for camshaft to become inclined-plane, out-of-flatness, has greatly affected the quality of product.
Model utility content
The utility model improves for above-mentioned technical problem, intend provide a kind of lightweight, end face is smooth, the helical gear for camshaft of the reliable molding and forming of intensity.
For this reason, a kind of helical gear for camshaft that the utility model provides, comprise wheel disc (1), the some helical teeth (2) that arrange around wheel disc (1) circumferential edge, the middle part of described wheel disc (1) is provided with through hole (3), key is: on described wheel disc (1), be provided with radially 6～10 the isosceles triangle holes (4) that distribute around through hole (3), and the center of wheel disc (1), the summit of isosceles triangle hole (4), the mid point on base, isosceles triangle hole (4) are located along the same line successively; In the front of wheel disc (1), between every two adjacent isosceles triangle holes (4), be provided with a long strip groove (5), hithermost long strip groove (5) is parallel with it respectively for two waists (4a) in each isosceles triangle hole (4), and every waist (4a) is L with the distance of hithermost long strip groove (5), 5mm < L < 10mm, be provided with and the integrated rivet of wheel disc (1) (7) at the back side of wheel disc (1), on wheel disc (1), be also provided with rivet via hole (6).
Be preferably, isosceles triangle hole (4), long strip groove (5) are respectively eight, and equal rounding (R).
The beneficial effects of the utility model are: by the isosceles triangle hole and the long strip groove that distribute are radially set on wheel disc, jointly play the effect of loss of weight, isosceles triangle hole, long strip groove alternate intervals arrange simultaneously, and define two waists position, size relationship of hithermost long strip groove with it in isosceles triangle hole, under the prerequisite of loss of weight and proof strength to greatest extent, guarantee the planarization of wheel disc end face in injection molding process; Suppose to arrange separately isosceles triangle hole, weight loss effect is good, but end face flatness cannot guarantee, suppose to arrange separately long strip groove, end face planarization is good, and intensity is reliable, but weight loss effect is undesirable.The back side at wheel disc arranges and the integrated rivet of wheel disc, is convenient to install, and has further saved manufacture cost.For the assembling of other part needs, on wheel disc, be also provided with rivet via hole.
Accompanying drawing explanation
Fig. 1 is plan view of the present utility model.
Fig. 2 is the rear view of Fig. 1.
Fig. 3 is the right elevation of Fig. 1.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
In conjunction with Fig. 1---shown in Fig. 3, a kind of helical gear for camshaft, adopts molding and forming, comprises wheel disc 1, helical teeth 2 compositions such as grade that arrange around wheel disc 1 circumferential edge.Be provided with through hole 3 at the middle part of wheel disc 1, for being sleeved on camshaft.On wheel disc 1, be provided with radially 6～8 isosceles triangle holes 4 that distribute around through hole 3, and the center of wheel disc 1, the summit in isosceles triangle hole 4, the mid point on 4 bases, isosceles triangle hole are located along the same line successively.In the front of wheel disc 1, between every two adjacent isosceles triangle holes 4, be provided with a long strip groove 5, i.e. isosceles triangle hole 4 and the 5 alternate intervals settings of long strip groove, both quantity equates.Hithermost long strip groove 5 is parallel with it respectively for two waist 4a in each isosceles triangle hole 4, and the distance of every waist 4a and hithermost long strip groove 5 is L, 5mm < L < 10mm; L is too small, and weight loss effect is good, but intensity is unreliable, and L is excessive, and intensity is reliable, but weight loss effect is bad, and the selection of L is also very crucial to bulk strength and weight loss effect.Be provided with at the back side of wheel disc 1 and the integrated rivet 7 of wheel disc 1, on wheel disc 1, be also provided with rivet via hole 6.
The quantity of isosceles triangle hole 4, long strip groove 5 is not limit, and is preferably, and isosceles triangle hole 4, long strip groove 5 are respectively eight, and equal rounding R.
In the time that rivet 7, rivet via hole 6 interfere with the position of isosceles triangle hole 4, long strip groove 5, isosceles triangle hole 4 and long strip groove 5 are vacateed segment space for arranging rivet 7 or rivet via hole 6, to guarantee integrally-built compactedness.
Claims (3)
1. the helical gear for camshaft, adopt molding and forming, comprise wheel disc (1), the some helical teeth (2) that arrange around wheel disc (1) circumferential edge, the middle part of described wheel disc (1) is provided with through hole (3), it is characterized in that: on described wheel disc (1), be provided with radially 6～8 the isosceles triangle holes (4) that distribute around through hole (3), and the center of wheel disc (1), the summit of isosceles triangle hole (4), the mid point on base, isosceles triangle hole (4) are located along the same line successively; In the front of wheel disc (1), between every two adjacent isosceles triangle holes (4), be provided with a long strip groove (5), hithermost long strip groove (5) is parallel with it respectively for two waists (4a) in each isosceles triangle hole (4), and every waist (4a) is L with the distance of hithermost long strip groove (5), 5mm < L < 10mm, be provided with and the integrated rivet of wheel disc (1) (7) at the back side of wheel disc (1), on wheel disc (1), be also provided with rivet via hole (6).
2. the helical gear for camshaft according to claim 1, is characterized in that: described isosceles triangle hole (4), long strip groove (5) are respectively eight, and equal rounding (R).
3. the helical gear for camshaft according to claim 1, it is characterized in that: in the time that rivet (7), rivet via hole (6) interfere with the position of isosceles triangle hole (4), long strip groove (5), isosceles triangle hole (4) and long strip groove (5) are vacateed segment space for arranging rivet (7) or rivet via hole (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723702.3U CN203641444U (en) | 2013-11-15 | 2013-11-15 | Helical gear for camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723702.3U CN203641444U (en) | 2013-11-15 | 2013-11-15 | Helical gear for camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203641444U true CN203641444U (en) | 2014-06-11 |
Family
ID=50872690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320723702.3U Expired - Fee Related CN203641444U (en) | 2013-11-15 | 2013-11-15 | Helical gear for camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203641444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195213A (en) * | 2016-08-15 | 2016-12-07 | 常州市武进金城齿轮有限公司 | Heat radiation gear |
-
2013
- 2013-11-15 CN CN201320723702.3U patent/CN203641444U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195213A (en) * | 2016-08-15 | 2016-12-07 | 常州市武进金城齿轮有限公司 | Heat radiation gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20141115 |
|
| EXPY | Termination of patent right or utility model |