CN220816251U - Internal tooth meshing gear transmission mechanism for double-shaft hinge and double-shaft hinge - Google Patents
Internal tooth meshing gear transmission mechanism for double-shaft hinge and double-shaft hinge Download PDFInfo
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- CN220816251U CN220816251U CN202322783554.0U CN202322783554U CN220816251U CN 220816251 U CN220816251 U CN 220816251U CN 202322783554 U CN202322783554 U CN 202322783554U CN 220816251 U CN220816251 U CN 220816251U
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Abstract
The utility model provides an internal tooth meshing gear transmission mechanism for a double-shaft hinge and the double-shaft hinge, which are sequentially provided with a circular arc-shaped internal gear left arm, a transmission gear set and a circular arc-shaped internal gear right arm, wherein the circular arc-shaped internal gear left arm is arranged the same as the circular arc-shaped internal gear right arm, the circular arc-shaped internal gear arm comprises a fixed structure, a connecting arm and a circular arc-shaped internal gear structure, and the fixed structure is used for connecting the fixed structure and the circular arc-shaped internal gear structure; the fixing structure is used for being fixed with the double-shaft hinge folding part; the circular arc-shaped internal gear structure is used for being meshed with the internal teeth of the gear of the transmission gear set; the transmission gear set can synchronously rotate the left arc-shaped inner gear arm and the right arc-shaped inner gear arm in the same-angle opposite direction. The internal tooth meshing gear transmission mechanism is meshed with the internal tooth of the gear through the internal gear, so that the gear axle center is not required to be arranged on the rotation axle center of the double-shaft hinge, a larger sinking space of the middle support plate can be formed, and the double-shaft hinge can be designed to be thinner.
Description
Technical Field
The utility model relates to a gear transmission mechanism, in particular to an internal tooth meshing gear transmission mechanism for a double-shaft hinge and the double-shaft hinge.
Background
The gear transmission mechanism is a device for transmitting motion and power, which consists of gear pairs, can accelerate, decelerate, change the rotation direction and change the torque, and can decompose and synthesize transmission routes and the like; the gear transmission mechanism has the advantages of accurate transmission, high efficiency, compact structure, long service life and the like, and is the most widely applied mechanical transmission mode in various modern devices.
The double-shaft hinge is commonly used for folding mobile phones, the commonly used double-shaft hinge is provided with a U-shaped hinge and a water drop hinge, the double-shaft hinge needs to realize synchronous reverse rotation of a left folding part and a right folding part through a gear transmission mechanism, the existing double-shaft hinge directly adopts gears for transmission, so that the axle center of the gears is required to be arranged on the rotating axle center of the double-shaft hinge, if the axle center of the gears is arranged on the rotating axle center of the double-shaft hinge, the sinking of a supporting plate in the double-shaft hinge can be influenced, namely, the sinking space of the supporting plate in the double-shaft hinge is smaller and limited, and the double-shaft hinge cannot be designed to be thinner. Therefore, the prior art needs to be improved and perfected.
Disclosure of utility model
In view of the above-mentioned shortcomings of the prior art, the present utility model aims to provide an internal tooth meshing gear transmission mechanism for a biaxial hinge and a biaxial hinge, which aims to solve the problems that the gear axis needs to be arranged on the rotation axis of the biaxial hinge, the sinking of a supporting plate in the biaxial hinge is affected, and the biaxial hinge cannot be designed to be thinner.
The technical scheme of the utility model is as follows:
An internally toothed gear transmission for a biaxial hinge comprising:
The circular arc-shaped inner gear left arm, the transmission gear set and the circular arc-shaped inner gear right arm are sequentially arranged, wherein,
The circular arc-shaped inner gear left arm comprises a left fixing structure, a left connecting arm and a left circular arc-shaped inner gear structure, wherein the left fixing structure is used for connecting the left fixing structure and the left circular arc-shaped inner gear structure; the left fixing structure is used for being fixed with the left folding part of the biaxial hinge; the left circular arc-shaped internal gear structure is used for being meshed with the internal teeth of the left gear of the transmission gear set;
The transmission gear set is used for synchronously rotating the left arc-shaped inner gear arm and the right arc-shaped inner gear arm in the same-angle opposite direction;
The right arm of the circular arc-shaped internal gear comprises a right fixing structure, a right connecting arm and a right circular arc-shaped internal gear structure, wherein the right fixing structure is used for connecting the right fixing structure and the right circular arc-shaped internal gear structure; the right fixing structure is used for being fixed with the right folding part of the biaxial hinge; the right circular arc-shaped internal gear structure is used for being meshed with the internal teeth of the right gear of the transmission gear set.
An internally geared gear transmission for a biaxial hinge as described above wherein the transmission gear set is provided with an even number of gears.
The internal tooth meshing gear transmission mechanism for the double-shaft hinge is characterized in that the transmission gear set is provided with 4 gears, the tooth widths of the left gear and the right gear are larger than those of two intermediate gears, and the tooth widths are the upward lengths of single teeth of the gears along the gear shaft.
An internally toothed gear transmission for a biaxial hinge as described above, wherein the left fixing structure is provided with a left fixing through hole; the right fixing structure is provided with a right fixing through hole.
The internal tooth meshing gear transmission mechanism for the double-shaft hinge, wherein the left circular arc internal gear structure comprises a left circular arc surface body and left teeth arranged on the inner surface of the left circular arc surface body; the right circular arc internal gear structure comprises a right circular arc surface body and right teeth arranged on the inner surface of the right circular arc surface body.
The inner tooth meshing gear transmission mechanism for the double-shaft hinge, wherein the left arc surface body is provided with the left arc protrusion, and the left arc protrusion is arranged in the left arc chute at the center part of the double-shaft hinge; the right arc surface body is provided with a right arc bulge, and the right arc bulge is arranged in a right arc chute at the central part of the double-shaft hinge.
In combination with the internal tooth meshing gear transmission mechanism, the utility model also provides a double-shaft hinge, which comprises a left folding part, a right folding part and a central part, wherein the left folding part and the right folding part are rotatably arranged at two sides of the central part, and the internal tooth meshing gear transmission mechanism for the double-shaft hinge is arranged between the left folding part and the right folding part.
The double-shaft hinge is characterized in that the left arc-shaped bulge cambered surface axis is arranged concentrically with the left rotation axis of the double-shaft hinge; the right arc bulge cambered surface axle center and the right rotation axle center of the double-shaft hinge are concentrically arranged.
Compared with the prior art, the internal tooth meshing gear transmission mechanism for the double-shaft hinge and the double-shaft hinge are sequentially provided with the circular arc-shaped internal gear left arm, the transmission gear set and the circular arc-shaped internal gear right arm, wherein the circular arc-shaped internal gear left arm and the circular arc-shaped internal gear right arm are arranged in the same way, the circular arc-shaped internal gear arm comprises a fixing structure, a connecting arm and a circular arc-shaped internal gear structure, and the fixing structure is used for connecting the fixing structure and the circular arc-shaped internal gear structure; the fixing structure is used for being fixed with the double-shaft hinge folding part; the circular arc-shaped internal gear structure is used for being meshed with the internal teeth of the gear of the transmission gear set; the transmission gear set can synchronously rotate the left arc-shaped inner gear arm and the right arc-shaped inner gear arm in the same-angle opposite direction. The internal tooth meshing gear transmission mechanism is meshed with the internal tooth of the gear through the internal gear, so that the gear axle center is not required to be arranged on the rotation axle center of the double-shaft hinge, a larger sinking space of the middle support plate can be formed, and the double-shaft hinge can be designed to be thinner.
Drawings
FIG. 1 is a schematic illustration of an internally geared gear train for a biaxial hinge of the present utility model employing a biaxial hinge;
FIG. 2 is a schematic structural view of a biaxial hinge of the present utility model;
Fig. 3 is a structural view of the left arm of the circular arc-shaped internal gear in the structure of the internal gear transmission mechanism for the biaxial hinge of the present utility model.
The reference numerals in the drawings: 10. a left fixing through hole; 11. a circular arc inner gear left arm; 12. a right arc chute; 13. a left gear; 14. a left arc chute; 15. an intermediate gear; 16. a right fixing through hole; 17. a right arm of the circular arc-shaped internal gear; 18. a right gear; 20. a middle support plate; 21. a right support plate; 22. a left support plate; 23. a center frame; 24. a right folded portion frame; 25. a left folding portion frame; 31. a left connecting arm; 32. a left arc bulge; 33. a left arc surface body; 44. left tooth.
Detailed Description
The utility model provides an internal tooth meshing gear transmission mechanism for a double-shaft hinge and the double-shaft hinge, and the utility model is further described in detail below with reference to the accompanying drawings and examples in order to make the purposes, technical schemes and effects of the utility model clearer and more definite. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Before describing the present utility model, a biaxial hinge structure is described first, referring to fig. 2, fig. 2 is a schematic structural diagram of a biaxial hinge of the present utility model; as shown in fig. 2, the biaxial hinge includes a left folding portion, a central portion, and a right folding portion, each of which can rotate relative to the central portion, a linkage mechanism is provided between the left folding portion and the right folding portion, the left folding portion includes a left support plate 22 and a left folding portion frame 25, the central portion includes a middle support plate 20 and a central portion frame 23, and the right folding portion includes a right support plate 21 and a right folding portion frame 24. When folding, the left folding part and the right folding part synchronously rotate in opposite directions relative to the central part at equal angles.
Referring to fig. 1 and 3, fig. 1 is a schematic view of an internal tooth meshing gear transmission mechanism for a biaxial hinge of the present utility model using a biaxial hinge; fig. 3 is a structural view of a circular arc-shaped inner gear right arm 11 in an internal tooth meshing gear transmission structure for a biaxial hinge of the present utility model; as shown in fig. 1 and 3, an internally toothed gear transmission mechanism for a biaxial hinge of the present utility model includes: the circular arc-shaped inner gear right arm 11, the transmission gear set and the circular arc-shaped inner gear right arm 17 are sequentially arranged, wherein the circular arc-shaped inner gear right arm 11 comprises a left fixing structure, a left connecting arm 31 and a left circular arc-shaped inner gear structure, and the left fixing structure is used for connecting the left fixing structure and the left circular arc-shaped inner gear structure; the left fixing structure is used for being fixed with the left folding part of the biaxial hinge; the left circular arc-shaped internal gear structure is used for being meshed with the internal teeth of the left gear 13 of the transmission gear set; the transmission gear set is used for synchronously rotating the right circular arc-shaped inner gear arm 11 and the right circular arc-shaped inner gear arm 17 in the same-angle opposite direction; the circular arc-shaped inner gear right arm 17 comprises a right fixing structure, a right connecting arm and a right circular arc-shaped inner gear structure, wherein the right fixing structure is used for connecting the right fixing structure and the right circular arc-shaped inner gear structure; the right fixing structure is used for being fixed with the right folding part of the biaxial hinge; the right circular arc internal gear structure is used for internally meshing with the right gear 18 of the drive gear set. Specifically, the right circular arc-shaped inner gear arm 11 and the right circular arc-shaped inner gear arm 17 are symmetrical in structure, the right circular arc-shaped inner gear arm 11 is fixed on the left folding portion through the left fixing structure, the right circular arc-shaped inner gear arm 17 is fixed on the right folding portion through the right fixing structure, and the transmission gear set can synchronously rotate the right circular arc-shaped inner gear arm 11 and the right circular arc-shaped inner gear arm 17 in the same angle and opposite direction, so that synchronous linkage of the double-shaft hinge can be achieved. As shown in the circular arc-shaped inner gear right arm 11 of fig. 3, the left connecting arm 31 may be in any shape, one end of the left connecting arm 31 is provided with a left fixing structure, the other end is provided with a left circular arc-shaped inner gear structure, the left fixing structure is used for fixing with the left folding part of the biaxial hinge, the left circular arc-shaped inner gear structure is used for being meshed with the inner teeth of the left gear 13 of the transmission gear set, the fixing structure is various, and the left fixing structure is provided with a left fixing through hole 10, and is fixed on the left folding part of the biaxial hinge by installing a screw in the left fixing through hole 10; the left circular arc internal gear structure refers to a structure in which gears are arranged in circular arc surfaces, and specifically includes a left circular arc surface body 33 and left teeth 44 arranged on the inner surface of the left circular arc surface body 33. The internal tooth meshing gear transmission mechanism of the utility model enables the gear axle center to be unnecessary to be arranged on the rotation axle center of the double-shaft hinge by the internal gear meshing with the internal teeth of the gear, can form a larger sinking space of the middle support plate 20, and can enable the double-shaft hinge to be designed thinner.
Based on an internally geared gear transmission for a biaxial hinge as described above, the present utility model provides a preferred embodiment, the transmission gear set being provided with an even number of gears. Specifically, the transmission gear set is provided with an even number of gears, so that the circular arc-shaped inner gear right arm 11 and the circular arc-shaped inner gear right arm 17 can reversely rotate, and the folding function can be realized.
Based on the above-mentioned internal tooth meshing gear transmission mechanism for the biaxial hinge, the present utility model provides a preferred embodiment, the transmission gear set is provided with 4 gears, the tooth widths of the left gear 13 and the right gear 18 are larger than the tooth widths of the two intermediate gears 15, and the tooth widths are the lengths of single teeth of the gears along the upward direction of the gear shaft. Specifically, the transmission gear set is provided with 4 gears, so that wider transmission can be realized under the condition of smaller diameter of the gears, and a thinner double-shaft hinge can be designed. It should be noted that, since the left gear 13 is meshed with the inner teeth of the circular arc-shaped inner gear right arm 11 and is also meshed with the intermediate gear 15, the tooth width of the left gear 13 is larger than that of the intermediate gear 15, so that the left gear 13 can be meshed with the intermediate gear 15 while being meshed with the inner teeth of the circular arc-shaped inner gear right arm 11. The left gear 13 is arranged in the same way as the right gear 18, and the tooth width is the length of a single tooth of the gear along the upward direction of the gear shaft.
Based on an internally toothed gear transmission for a biaxial hinge as described above, the present utility model provides a preferred embodiment, the left fixing structure being provided with a left fixing through hole 10; the right fixing structure is provided with a right fixing through hole 16. Specifically, the fixing through holes are screw holes for mounting screws, and refer to the left fixing through hole 10 and the right fixing through hole 16.
Based on the above-mentioned internal tooth meshing gear transmission mechanism for the biaxial hinge, the present utility model provides a preferred embodiment, and the left circular arc internal gear structure includes a left circular arc surface body 33 and left teeth 44 disposed on the inner surface of the left circular arc surface body 33; the right circular arc internal gear structure comprises a right circular arc surface body and right teeth arranged on the inner surface of the right circular arc surface body. Specifically, the left circular arc surface body 33 and the right circular arc internal gear structure are both provided with thicknesses, taking the left circular arc internal gear structure as an example, the left circular arc internal gear structure needs to be concentric with the left rotation axis of the double-shaft hinge when being installed, and the left circular arc internal gear and the left rotation axis can synchronously rotate after being concentric with the left rotation axis, so that the transmission gear can be free from the limit of the left transmission axis after the left circular arc internal gear is internally meshed with the left gear 13.
Based on the above-mentioned internal tooth meshing gear transmission mechanism for the biaxial hinge, the present utility model provides a preferred embodiment, the left arc surface body 33 is provided with a left arc protrusion 32, and the left arc protrusion 32 is configured to be disposed in the left arc chute 14 in the central portion of the biaxial hinge; the right arc surface body is provided with a right arc bulge, and the right arc bulge is arranged in a right arc chute 12 at the center part of the double-shaft hinge. Specifically, the left arc protrusion 32 has the same structure as the right arc protrusion, taking the left arc protrusion 32 as an example, the arc protrusions are that the protrusions are arranged in an arc shape, and the protrusions can be continuous or discontinuous, the left arc protrusion 32 is arranged on the left arc surface body 33 to limit the left arm of the internal gear transmission, the left arc protrusion 32 corresponds to the left arc protrusion 32, the left arc chute 14 is also required to be arranged on the central part of the double-shaft hinge, the arc chute is that a chute is in an arc shape, the left arc protrusion 32 is arranged in the left arc chute 14, and the left arc chute 14 limits the left arc protrusion 32, so that the left arc internal gear structure moves along the left arc chute 14. The double-shaft hinge is also provided with a right circular arc chute 12 at the center, and a right circular arc bulge is arranged in the right circular arc chute 12.
Referring to fig. 1 and 2, as shown in fig. 1 and 2, the present utility model further provides a biaxial hinge, which includes a left folding portion, a right folding portion and a central portion, wherein the left folding portion and the right folding portion are rotatably disposed at two sides of the central portion, and an internal tooth meshing gear transmission mechanism for biaxial hinge is disposed between the left folding portion and the right folding portion. As described in detail above.
The double-shaft hinge is characterized in that the cambered surface axle center of the left arc-shaped bulge 32 is arranged concentrically with the left rotation axle center of the double-shaft hinge; the right arc bulge cambered surface axle center and the right rotation axle center of the double-shaft hinge are concentrically arranged. Specifically, the left arc protrusion 32 and the right arc protrusion are symmetrically arranged, taking the left arc protrusion 32 as an example, the left arc protrusion 32 is arranged in the left arc chute 14, and the arc shaft center of the left arc protrusion 32 and the left rotation shaft center of the biaxial hinge are concentrically arranged, so that the arc shaft center of the left arc internal gear structure is always kept at the left rotation shaft center when the inner gear transmission left arm rotates along with the left folding part, and the left arc internal gear structure only rotates and does not deviate from the rotation shaft center.
In summary, the internal tooth meshing gear transmission mechanism for the biaxial hinge and the biaxial hinge provided by the utility model are sequentially provided with the circular arc-shaped internal gear left arm, the transmission gear set and the circular arc-shaped internal gear right arm, wherein the circular arc-shaped internal gear left arm and the circular arc-shaped internal gear right arm are arranged in the same way, the circular arc-shaped internal gear arm comprises a fixed structure, a connecting arm and a circular arc-shaped internal gear structure, and the fixed structure is used for connecting the fixed structure and the circular arc-shaped internal gear structure; the fixing structure is used for being fixed with the double-shaft hinge folding part; the circular arc-shaped internal gear structure is used for being meshed with the internal teeth of the gear of the transmission gear set; the transmission gear set can synchronously rotate the left arc-shaped inner gear arm and the right arc-shaped inner gear arm in the same-angle opposite direction. The internal tooth meshing gear transmission mechanism is meshed with the internal tooth of the gear through the internal gear, so that the gear axle center is not required to be arranged on the rotation axle center of the double-shaft hinge, a larger sinking space of the middle support plate can be formed, and the double-shaft hinge can be designed to be thinner.
It is to be understood that the utility model is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.
Claims (8)
1. An internally toothed gear transmission for a biaxial hinge, comprising:
The circular arc-shaped inner gear left arm, the transmission gear set and the circular arc-shaped inner gear right arm are sequentially arranged, wherein,
The circular arc-shaped inner gear left arm comprises a left fixing structure, a left connecting arm and a left circular arc-shaped inner gear structure, wherein the left fixing structure is used for connecting the left fixing structure and the left circular arc-shaped inner gear structure; the left fixing structure is used for being fixed with the left folding part of the biaxial hinge; the left circular arc-shaped internal gear structure is used for being meshed with the internal teeth of the left gear of the transmission gear set;
The transmission gear set is used for synchronously rotating the left arc-shaped inner gear arm and the right arc-shaped inner gear arm in the same-angle opposite direction;
The right arm of the circular arc-shaped internal gear comprises a right fixing structure, a right connecting arm and a right circular arc-shaped internal gear structure, wherein the right fixing structure is used for connecting the right fixing structure and the right circular arc-shaped internal gear structure; the right fixing structure is used for being fixed with the right folding part of the biaxial hinge; the right circular arc-shaped internal gear structure is used for being meshed with the internal teeth of the right gear of the transmission gear set.
2. An internally toothed gear transmission for a biaxial hinge according to claim 1, characterized in that the transmission gear set is provided with an even number of gears.
3. An internally toothed gear transmission for a biaxial hinge according to claim 2, characterized in that the transmission gear set is provided with 4 gears, the tooth widths of the left and right gears are larger than the tooth widths of two intermediate gears, and the tooth widths are the lengths of single teeth of the gears in the upward direction of the gear shaft.
4. An internally toothed gear transmission for a biaxial hinge according to claim 1, characterized in that the left fixing structure is provided with a left fixing through hole; the right fixing structure is provided with a right fixing through hole.
5. The internally toothed gear transmission for a biaxial hinge according to claim 1, characterized in that the left circular arc-shaped internal gear structure includes a left circular arc-shaped surface body and left teeth provided on the inner surface of the left circular arc-shaped surface body; the right circular arc internal gear structure comprises a right circular arc surface body and right teeth arranged on the inner surface of the right circular arc surface body.
6. The internally toothed gear transmission for a biaxial hinge according to claim 5, characterized in that the left circular-arc surface body is provided with a left circular-arc protrusion for being disposed in a left circular-arc chute in the center portion of the biaxial hinge; the right arc surface body is provided with a right arc bulge, and the right arc bulge is arranged in a right arc chute at the central part of the double-shaft hinge.
7. A biaxial hinge comprising a left folding portion, a right folding portion and a central portion, wherein the left folding portion and the right folding portion are rotatably provided on both sides of the central portion, characterized in that an internal tooth meshing gear transmission mechanism for a biaxial hinge according to any one of claims 1 to 6 is provided between the left folding portion and the right folding portion.
8. The biaxial hinge according to claim 7, wherein the left arc convex arc surface axis is arranged concentrically with the left rotation axis of the biaxial hinge; the right arc bulge cambered surface axle center and the right rotation axle center of the double-shaft hinge are concentrically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322783554.0U CN220816251U (en) | 2023-10-17 | 2023-10-17 | Internal tooth meshing gear transmission mechanism for double-shaft hinge and double-shaft hinge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322783554.0U CN220816251U (en) | 2023-10-17 | 2023-10-17 | Internal tooth meshing gear transmission mechanism for double-shaft hinge and double-shaft hinge |
Publications (1)
| Publication Number | Publication Date |
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| CN220816251U true CN220816251U (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322783554.0U Active CN220816251U (en) | 2023-10-17 | 2023-10-17 | Internal tooth meshing gear transmission mechanism for double-shaft hinge and double-shaft hinge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220816251U (en) |
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2023
- 2023-10-17 CN CN202322783554.0U patent/CN220816251U/en active Active
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