CN204186942U - Transfer case connects internal gear - Google Patents
Transfer case connects internal gear Download PDFInfo
- Publication number
- CN204186942U CN204186942U CN201420641605.4U CN201420641605U CN204186942U CN 204186942 U CN204186942 U CN 204186942U CN 201420641605 U CN201420641605 U CN 201420641605U CN 204186942 U CN204186942 U CN 204186942U
- Authority
- CN
- China
- Prior art keywords
- internal gear
- transfer case
- section
- coordinating
- toothed coupling
- 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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Abstract
The utility model discloses a kind of transfer case and connect internal gear, comprise and connect internal gear body, central through bore logical during described connection internal gear body is provided with, described central through bore comprises the reaming section that cooperation section for coordinating with axle and internal diameter are greater than described cooperation section, the inwall of described cooperation section is provided with the spline for coordinating with axle, and the endoporus of described reaming section is provided with the internal gear for coordinating with the toothed coupling of transfer case.Transfer case of the present utility model connects internal gear, coordinate with axle by the cooperation section of heart through hole wherein arranges spline, quality of fit coordinates higher compared to traditional singly-bound, namely the internal gear be arranged in reaming section is made accurately to engage with toothed coupling, and then make the gear shift operation of transfer case more steady, avoid connecting the gouging abrasion between internal gear and toothed coupling, improve the working life connecting internal gear and toothed coupling.
Description
Technical field
The utility model belongs to transfer case technical field, is specifically related to a kind of transfer case and connects internal gear.
Background technique
The mode that transfer case connection internal gear generally adopts single-degree-of-freedom to be slidably matched is sleeved on axle, and its one end is provided with the reaming that aperture is greater than axle external diameter, is provided with internal gear and engages with transfer case toothed coupling in reaming.During use, shift fork drives the slip of transfer case toothed coupling to engage with connection internal gear, and the Power output realizing different mode is selected.Although existing transfer case connects internal gear can meet usage requirement to a certain extent, still there is following problem:
1, transfer case connection internal gear coordinates with adopting singly-bound between axle, due to the error that singly-bound coordinates, when driving the slip of transfer case toothed coupling to engage with connection internal gear, toothed coupling may be there is and cause in engagement process, there is the problem of blocking and relating to, colliding with connecting internal gear misalignment, even also can cause toothed coupling and the problem connecting internal gear and cannot normally engage;
2, due to toothed coupling with connect that the card that internal gear exists in engagement process relates to, the problem such as to collide with, not only can cause toothed coupling and connect the wearing and tearing that internal gear can too fast, but also can cause the gear shift operation of whole transfer case not steadily, the poor and reduction in working life of operating handle.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of transfer case to connect internal gear, effectively can improve assembly precision, guarantee to engage reposefully and be separated with toothed coupling.
For achieving the above object, the utility model provides following technological scheme:
A kind of transfer case connects internal gear, comprise and connect internal gear body, central through bore logical during described connection internal gear body is provided with, described central through bore comprises the reaming section that cooperation section for coordinating with axle and internal diameter are greater than described cooperation section, the inwall of described cooperation section is provided with the spline for coordinating with axle, and the endoporus of described reaming section is provided with the internal gear for coordinating with the toothed coupling of transfer case.
Further, described spline adopts involute splines.
Further, all gear teeth of described internal gear are equipped with near the end of side, described reaming section place the arc envelope face formed by circular arc chamfering.
Further, the external diameter in described arc envelope face reduces gradually along the radially inner direction of described connection internal gear body.
Further, the bi-side of described arc envelope face and the described gear teeth seamlessly transit.
Further, in described arc envelope face, the center of circle of all circular arcs is all positioned at on the straight line of the axes normal of described shaft coupling body.
The beneficial effects of the utility model are:
Transfer case of the present utility model connects internal gear, coordinate with axle by the cooperation section of heart through hole wherein arranges spline, quality of fit coordinates higher compared to traditional singly-bound, namely the internal gear be arranged in reaming section is made accurately to engage with toothed coupling, and then make the gear shift operation of transfer case more steady, avoid connecting the gouging abrasion between internal gear and toothed coupling, improve the working life connecting internal gear and toothed coupling.
By arranging the arc envelope face formed by circular arc chamfering on all gear teeth of internal gear, when shift fork actuation gear shaft coupling axially slide to connect with transfer case of the present utility model internal gear engage time, when arc envelope face contacts with toothed coupling, a tangential component can be produced to the external gear of toothed coupling, the gear teeth of transfer case toothed coupling can be driven to slide along arc envelope face, and then the object that realization is steadily engaged with transfer case toothed coupling, and when also establishing the arc envelope face formed by circular arc chamfering on the gear teeth of transfer case toothed coupling, engagement smoothness is better, the bite can effectively avoiding existing toothed coupling and transfer case to connect existing when internal gear engages or collide with, and make the gear shift operation of transfer case more steady, operating handle is better, and improve the working life of transfer case.
Accompanying drawing explanation
In order to make the purpose of this utility model, technological scheme and beneficial effect clearly, the utility model provides following accompanying drawing to be described:
Fig. 1 is the structural representation that the utility model transfer case connects internal gear embodiment;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the structural representation connecting the transfer case toothed coupling that internal gear coordinates with the present embodiment transfer case.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, and to make those skilled in the art better can understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
As shown in Figure 1, for the utility model transfer case connects the structural representation of internal gear embodiment.The transfer case of the present embodiment connects internal gear, comprise and connect internal gear body 1, connect during internal gear body 1 is provided with the central through bore 2 led to, central through bore 2 comprises cooperation section 3 for coordinating with axle and internal diameter is greater than the reaming section 4 coordinating section 3, the inwall of cooperation section 3 is provided with the spline 5 for coordinating with axle, and the endoporus of reaming section 4 is provided with the internal gear 6 for coordinating with the toothed coupling of transfer case.Preferably, the spline 5 of the present embodiment adopts involute splines, and quality of fit is high, and processability is better.
The transfer case of the present embodiment connects internal gear, coordinate with axle by the cooperation section 3 of heart through hole 2 wherein arranges spline 5, quality of fit coordinates higher compared to traditional singly-bound, namely the internal gear 6 be arranged in reaming section 4 is made accurately to engage with toothed coupling, and then make the gear shift operation of transfer case more steady, avoid connecting the gouging abrasion between internal gear and toothed coupling, improve the working life connecting internal gear and toothed coupling.
Further, all gear teeth of internal gear 6 are equipped with the arc envelope face 7 formed by circular arc chamfering near the end of side, reaming section 4 place.The external diameter in the arc envelope face 7 of the present embodiment reduces gradually along the connection radially inner direction of internal gear body 1, and arc envelope face 7 seamlessly transits with the bi-side of the gear teeth, effectively can avoid the bite phenomenon when engaging with transfer case toothed coupling.In arc envelope face 7, the center of circle of all circular arcs is all positioned on the straight line 8 with the axes normal of shaft coupling body 1, and namely the outer contour 9 in arc envelope face 7 or its tangent line are less than 90 ° with the angle connected between internal gear axis.
The internal gear 6 of the present embodiment selects tooth number Z=22, and the external gear of modulus m=3 can meet the requirement of transmission and bearing capacity, tooth number Z=15 selected by the involute splines of the present embodiment, the involute splines of modulus m=1.5, quality of fit is high, can ensure that shaft coupling is in axial direction smooth sliding.The shaft coupling body 1 of the present embodiment is provided with the carburized case that the degree of depth is 0.8mm, can have the surface hardness and antiwear property that strengthen external gear and involute splines further.
By arranging the arc envelope face 7 formed by circular arc chamfering on all gear teeth of internal gear 6, when shift fork actuation gear shaft coupling axially slide to connect with the transfer case of the present embodiment internal gear engage time, when arc envelope face 7 contacts with toothed coupling, a tangential component can be produced to the external gear of toothed coupling, the gear teeth of transfer case toothed coupling can be driven to slide along arc envelope face, and then the object that realization is steadily engaged with transfer case toothed coupling, and when also establishing the arc envelope face formed by circular arc chamfering on the gear teeth of transfer case toothed coupling, as shown in Figure 3, engagement smoothness is better, the bite can effectively avoiding existing toothed coupling and transfer case to connect existing when internal gear engages or collide with, and make the gear shift operation of transfer case more steady, operating handle is better, and improve the working life of transfer case.
The above embodiment is only for absolutely proving the preferred embodiment that the utility model is lifted, and protection domain of the present utility model is not limited thereto.The equivalent alternative or conversion that those skilled in the art do on the utility model basis, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (6)
1. a transfer case connects internal gear, it is characterized in that: comprise and connect internal gear body, central through bore logical during described connection internal gear body is provided with, described central through bore comprises the reaming section that cooperation section for coordinating with axle and internal diameter are greater than described cooperation section, the inwall of described cooperation section is provided with the spline for coordinating with axle, and the endoporus of described reaming section is provided with the internal gear for coordinating with the toothed coupling of transfer case.
2. transfer case according to claim 1 connects internal gear, it is characterized in that: described spline adopts involute splines.
3. transfer case according to claim 1 and 2 connects internal gear, it is characterized in that: all gear teeth of described internal gear are equipped with near the end of side, described reaming section place the arc envelope face formed by circular arc chamfering.
4. transfer case according to claim 3 connects internal gear, it is characterized in that: the external diameter in described arc envelope face reduces gradually along the radially inner direction of described connection internal gear body.
5. transfer case according to claim 4 connects internal gear, it is characterized in that: the bi-side of described arc envelope face and the described gear teeth seamlessly transit.
6. transfer case according to claim 4 connects internal gear, it is characterized in that: in described arc envelope face, the center of circle of all circular arcs is all positioned at on the straight line of the axes normal of described shaft coupling body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420641605.4U CN204186942U (en) | 2014-10-31 | 2014-10-31 | Transfer case connects internal gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420641605.4U CN204186942U (en) | 2014-10-31 | 2014-10-31 | Transfer case connects internal gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204186942U true CN204186942U (en) | 2015-03-04 |
Family
ID=52618947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420641605.4U Expired - Fee Related CN204186942U (en) | 2014-10-31 | 2014-10-31 | Transfer case connects internal gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204186942U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976319A (en) * | 2015-06-30 | 2015-10-14 | 柳州市邕达工配厂 | Internal gear |
-
2014
- 2014-10-31 CN CN201420641605.4U patent/CN204186942U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976319A (en) * | 2015-06-30 | 2015-10-14 | 柳州市邕达工配厂 | Internal 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20161031 |