CN214623319U - High-precision gear positioning mechanism - Google Patents
High-precision gear positioning mechanism Download PDFInfo
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- CN214623319U CN214623319U CN202121032334.9U CN202121032334U CN214623319U CN 214623319 U CN214623319 U CN 214623319U CN 202121032334 U CN202121032334 U CN 202121032334U CN 214623319 U CN214623319 U CN 214623319U
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Abstract
The utility model discloses a high accuracy gear positioning mechanism. The device comprises a positioning spring rod, a finely adjustable positioning rod spring and a finely adjustable eccentric nail; the positioning spring rod comprises an upper rod body and a lower rod body, the upper rod body and the lower rod body can rotate around self fixed points, and the tail part of the lower rod body abuts against a limiting point; the finely adjustable positioning rod spring comprises an upper rod body and a lower rod body which are connected into a whole and form a certain angle with each other, wherein the front part of the upper rod body is provided with a triangular head part which can be inserted into a positioning hole of a gear to realize gear positioning, and the lower rod body is fastened with the upper rod body of the positioning spring rod through a screw; a small round shaft at the right lower part of the eccentric nail is riveted on an upper rod body of the positioning spring rod; the excircle of the middle-layer cylinder of the eccentric nail props against the inner side of the triangular head of the fine-adjustable positioning rod spring; the inner side of the triangular head of the fine-adjustable positioning rod spring is clamped below the upper-layer cylinder of the eccentric nail and above the upper rod body of the positioning spring rod. The high-precision gear positioning mechanism can eliminate the phenomena of virtual positioning or inaccurate positioning angle of a gear and the like.
Description
Technical Field
The utility model belongs to the technical field of clock and watch mechanical structure, a high accuracy gear positioning mechanism is related to.
Background
In a multi-function watch configuration, precise positioning of some "piggybacked" gear or cam mechanisms for certain functions is often required. A commonly used positioning mechanism is shown in fig. 1. The principle is as follows: gear 1 is a rotatable gear; the positioning spring rod 2 is a deformable spring member, and comprises an upper rod body and a lower rod body which are connected into a whole to form a certain angle, the front part of the upper rod body is provided with a triangular head b which can be inserted into a positioning opening of a gear to realize gear positioning, a point a at the connecting part of the upper rod body and the lower rod body is fixed by a screw (is a fixed point), the upper rod body and the lower rod body can rotate around the point a (the fixed point), and the tail c of the lower rod body is tightly close to a limiting point d (the limiting point d is provided with a limiting block); the central shaft of the gear 1 is provided with a pointer 3, and an indicating dial 4 is provided with scales. When the gear 1 rotates, it can rotate with clearance, and its rotation angle α is 360/z (z is the number of gear teeth). In a static state, under the action of the positioning spring rod 2, the triangular head b of the positioning spring rod 2 locks the angle of the gear 1; under the rotation state, the gear 1 is driven by the driving torque to rotate, and the tail part c of the positioning spring rod 2 is tightly close to a limit point d, so that the triangular head part b and the tail part c of the positioning spring rod 2 are forced to rotate around a point a and elastically deform, the gear 1 rotates by an angular pitch, and meanwhile, the pointer 3 skips over a grid on the indicating dial 4.
The positioning mechanism has the advantages of simple structure, but has the defect that the positioning accuracy of the gear 1 is easily influenced by the position and shape errors of the positioning spring rod 2 to generate the phenomena of gear virtual positioning or inaccurate positioning angle and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a high accuracy gear positioning mechanism that can eliminate the virtual location of gear or phenomenon such as location angle are inaccurate.
The technical scheme of the utility model as follows:
the utility model relates to a high-precision gear positioning mechanism, which comprises a positioning spring rod, a finely adjustable positioning rod spring and a finely adjustable eccentric nail; the positioning spring rod comprises an upper rod body and a lower rod body which are connected into a whole to form a certain angle, the connecting part of the upper rod body and the lower rod body is a fixed point, the upper rod body and the lower rod body can rotate around the fixed point, the tail part of the lower rod body abuts against a limiting point, and the limiting point is provided with a limiting block; the finely adjustable positioning rod spring comprises an upper rod body and a lower rod body which are connected into a whole and form a certain angle with each other, the front part of the upper rod body is provided with a triangular head part which can be inserted into a positioning hole of a gear to realize gear positioning, and the lower rod body is fastened with the upper rod body of the positioning spring rod through a screw; the eccentric nail comprises an upper-layer cylinder, a middle-layer cylinder and a small circular shaft positioned at the lower right part, and the upper-layer cylinder, the middle-layer cylinder and the small circular shaft are integrated; the center of the top surface of the upper layer cylinder of the eccentric nail is provided with a cross or straight groove matched with a cross or straight screwdriver; a small round shaft at the right lower part of the eccentric nail is riveted on an upper rod body of the positioning spring rod; the excircle of the middle-layer cylinder of the eccentric nail props against the inner side of the triangular head of the fine-adjustable positioning rod spring; the inner side of the triangular head of the fine-adjustable positioning rod spring is clamped below the upper-layer cylinder of the eccentric nail and above the upper rod body of the positioning spring rod.
Furthermore, the positioning spring rod and the finely-adjustable positioning rod spring are both made of metal materials.
Furthermore, the connecting part of the upper rod body and the lower rod body of the positioning spring rod is fixed through a screw.
Further, the lower rod body of the fine-adjustable positioning rod spring is fastened with the upper rod body of the positioning spring rod through two screws.
Further, the high-precision gear positioning mechanism further comprises a gear; the triangular head part at the front part of the upper rod body of the fine-adjustable positioning rod spring is inserted into the positioning opening of the gear.
Still further, the gear is a camshaft gear.
Further, the high-precision gear positioning mechanism further comprises a pointer and an indicating dial; the gear is positioned in the center of the indicating dial; the pointer is mounted on the central shaft of the gear.
In the high-precision gear positioning mechanism of the utility model, the gear is a rotatable gear; the positioning spring rod comprises an upper rod body and a lower rod body which are connected into a whole to form a certain angle, and the connecting part of the upper rod body and the lower rod body is fixed through a screw and is a fixed point; the upper rod body and the lower rod body can rotate around self fixed points, the tail part of the lower rod body is abutted against a limiting point, and the limiting point is provided with a limiting block; the gear central shaft is provided with a pointer, and the indicating dial is provided with scales. What is different is that the mechanism is additionally provided with two parts on the positioning spring rod: the first one is a finely adjustable positioning rod spring which is fastened with an upper rod body of a positioning spring rod through two screws; the second is an eccentric nail which can be finely adjusted, and a small round shaft at the right lower part of the eccentric nail is riveted on an upper rod body of the positioning spring rod; the eccentric nail can rotate around the axis of the small circular shaft on the upper rod body of the positioning spring rod, and the offset of the center of a middle-layer cylinder of the eccentric nail from the axis of the small circular shaft of the eccentric nail is L (L is the eccentric value of the eccentric nail), so that after the eccentric nail rotates for one circle (the small circular shaft, the middle-layer cylinder and the upper-layer cylinder all rotate for one circle), the total offset of the excircle of the middle-layer cylinder from the axis of the small circular shaft of the eccentric nail is 2L; the positioning spring rod, the finely adjustable positioning rod spring and the eccentric nail are combined into a positioning spring rod assembly.
The utility model discloses a high accuracy gear positioning mechanism, under quiescent condition, the gear is under the spring rod effect of location, and the triangle head that can finely tune the spring of location spring rod on the spring rod subassembly of location has pinned gear angle. If the mechanism produces the phenomenon such as the gear virtual location or the location angle is inaccurate at this moment, the accessible is adjusted eccentric nail with the screwdriver, makes the cylindrical excircle skew in eccentric nail intermediate level, interferes the position that can finely tune the triangle head of positioning rod spring (the cylindrical excircle in intermediate level of eccentric nail is supporting the inboard that can finely tune the triangle head of positioning rod spring, that is to say, can finely tune the triangle head b of positioning rod spring 5 and finely tune 2L's offset), reaches and eliminates the phenomenon such as the gear virtual location or the location angle is inaccurate.
The utility model discloses a high accuracy gear positioning mechanism, under the rotating-state, the gear produces rotatoryly under drive moment drives, and the location spring pole, can finely tune the location spring pole spring and the eccentric nail combination becomes a location spring pole subassembly, forces whole subassembly around self fixed point rotation elastic deformation, makes the gear rotate an angular pitch, and a check is skipped to the pointer on the instruction calibrated scale simultaneously.
The utility model has the advantages that:
the utility model discloses a high accuracy gear positioning mechanism can eliminate the virtual location of gear or phenomenon such as location angle is inaccurate.
The utility model discloses a high accuracy gear positioning mechanism has following advantage:
1. the utility model discloses a high accuracy gear positioning mechanism only increases one and can finely tune locating bar spring and eccentric nail on traditional positioning mechanism's basis to make up into a locating spring pole subassembly with original locating spring pole. Simple structure and convenient operation.
2. When the positioning mechanism is installed, if the phenomena of virtual positioning of the gear or inaccurate positioning angle and the like are caused due to certain position errors, the eccentric nail can be adjusted to enable the excircle of the middle layer circle of the eccentric nail to deviate, so that the position of the triangular head of the finely-adjustable positioning rod spring is interfered, and the phenomena of virtual positioning of the gear or inaccurate positioning angle and the like are eliminated.
3. The utility model discloses a high accuracy gear positioning mechanism, installation and debugging are the final debugging after checking and accepting, need not to do any debugging again in follow-up use.
4. The utility model discloses a high accuracy gear positioning mechanism except can obtain the wide application in the clock and watch product, still can be used to all kinds of small-size accurate positioning mechanism.
Drawings
FIG. 1 is a schematic diagram of a prior art gear positioning mechanism;
fig. 2 is a schematic top view of the high-precision gear positioning mechanism of the present invention;
fig. 3 is a schematic side view of the eccentric nail 6 according to the present invention;
fig. 4 is a schematic top view of the eccentric nail 6 according to the present invention;
fig. 5 is a schematic structural view of the present invention, showing the matching between the fine adjustable positioning rod spring 5 and the eccentric nail 6.
In the figure: 1. gear 2, positioning spring rod 3, pointer 4, indicating dial 5, finely-adjustable positioning rod spring 6, eccentric nail 60, small circular shaft 61, middle layer cylinder 62, upper layer cylinder 7, limiting block a, fixing point b, triangular head d, limiting point g, axis h of small circular shaft 60, circle center L of middle layer cylinder 61, eccentric values e and f of eccentric nail 6, and two points where the lower rod body of finely-adjustable positioning rod spring 5 is fastened with the upper rod body of positioning spring rod 2 by screws
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Examples
As shown in fig. 2-5, the utility model relates to a high precision gear positioning mechanism, which comprises a positioning spring rod 2, a finely adjustable positioning rod spring 5 and a finely adjustable eccentric nail 6; the positioning spring rod 2 comprises an upper rod body and a lower rod body which are connected into a whole to form a certain angle, and the connecting part of the upper rod body and the lower rod body is fixed through a screw and is a fixed point a; the upper rod body and the lower rod body can rotate around a self fixed point a, and the tail c of the lower rod body is abutted against a limiting point d (the limiting point d is provided with a limiting block 7); the fine-adjustable positioning rod spring 5 comprises an upper rod body and a lower rod body which are connected into a whole to form a certain angle, the front part of the upper rod body is provided with a triangular head b which can be inserted into a positioning hole of the gear 1 to realize gear positioning, and the e and f positions of the lower rod body are respectively fastened with the upper rod body of the positioning spring rod 2 through two screws; the eccentric nail 6 comprises an upper layer cylinder 62, a middle layer cylinder 61 and a small round shaft 60 positioned at the lower right part, and the three are integrated; the center of the top surface of the upper-layer cylinder 62 of the eccentric nail 6 is provided with a cross-shaped groove matched with a cross screwdriver; a small round shaft 60 at the right lower part of the eccentric nail 6 is riveted on the upper rod body of the positioning spring rod 2; the excircle of the middle-layer cylinder of the eccentric nail 6 props against the inner side of the triangular head b of the fine-adjustable positioning rod spring 5; the inner side of the triangular head b of the fine-adjustable positioning rod spring 5 is clamped between the lower surface of the upper-layer cylinder 62 of the eccentric nail 6 and the upper surface of the upper rod body of the positioning spring rod 2.
The positioning spring rod 2 and the finely-adjustable positioning rod spring 5 are made of metal materials.
The high-precision gear positioning mechanism also comprises a gear 1; the triangular head b at the front part of the upper rod body of the fine-adjustable positioning rod spring 5 is inserted into the positioning hole of the gear 1.
The high-precision gear positioning mechanism further comprises a pointer 3 and an indicating dial 4; the gear 1 is positioned in the center of the indicating dial 4; the pointer 3 is mounted on the central shaft of the gear 1.
In the high-precision gear positioning mechanism of the utility model, the gear 1 is a rotatable gear; the positioning spring rod 2 comprises an upper rod body and a lower rod body which are connected into a whole to form a certain angle, and the connecting part of the upper rod body and the lower rod body is fixed through a screw and is a fixed point a; the upper rod body and the lower rod body can rotate around a self fixed point a, and the tail c of the lower rod body is abutted against a limiting point d (the limiting point d is provided with a limiting block); the central shaft of the gear 1 is provided with a pointer 3 which points to a certain scale on an indicating dial 4. What is different is that the mechanism is additionally provided with two parts on the positioning spring rod 2: the first one is a finely adjustable positioning rod spring 5, and the e and f positions of the fine adjustable positioning rod spring are fastened with the upper rod body of the positioning spring rod 2 through two screws respectively; the second is a finely adjustable eccentric nail 6, as shown in fig. 3, a small round shaft 60 at the lower right part of the eccentric nail 6 is riveted on the upper rod body of the positioning spring rod 2; as shown in fig. 4, the eccentric nail 6 can rotate around the axis g of the small circular shaft 60 on the upper rod body of the positioning spring rod 2, and the offset of the center h of the middle layer cylinder 61 of the eccentric nail 6 from the axis g of the small circular shaft 60 of the eccentric nail 6 is L (L is the eccentric value of the eccentric nail 6), so that after the eccentric nail 6 rotates one turn (the small circular shaft 60, the middle layer cylinder 61 and the upper layer cylinder 62 all rotate one turn), the total offset of the outer circle i of the middle layer cylinder 61 from the axis g of the small circular shaft 60 of the eccentric nail 6 is 2L; the positioning spring rod 2, the finely adjustable positioning rod spring 5 and the eccentric nail 6 are combined into a positioning spring rod assembly.
The utility model discloses a high accuracy gear positioning mechanism, under quiescent condition, gear 1 is under the effect of location spring pole 2, and the triangle head b that can finely tune location pole spring 5 on the location spring pole subassembly has pinned gear 1 angle. If the mechanism produces the phenomenon such as the virtual location of gear or location angle is inaccurate this moment, the accessible is adjusted eccentric nail 6 with the screwdriver, makes the cylindrical excircle skew in eccentric nail 6 intermediate level, interferes the position that can finely tune locating lever spring 5's triangle head b (the cylindrical excircle in intermediate level of eccentric nail 6 is supporting the inboard that can finely tune locating lever spring 5's triangle head b, that is to say, can finely tune locating lever spring 5's triangle head b and finely tune 2L's offset), reaches and eliminates the phenomenon such as the virtual location of gear or location angle are inaccurate.
The utility model discloses a high accuracy gear positioning mechanism, under the rotating-state, gear 1 produces rotatoryly under drive moment drives, and location spring pole 2, finely tune the location spring pole 5 and eccentric nail 6 make up into a location spring pole subassembly, force whole subassembly around self a point rotation elastic deformation, make gear 1 rotate an angular pitch, and pointer 3 skips a check on indicating calibrated scale 4 simultaneously.
When the positioning mechanism is installed, if the phenomena of virtual positioning of the gear, inaccurate positioning angle and the like are caused due to certain position errors, the eccentric nail 6 can be adjusted to enable the excircle of the middle layer circle of the eccentric nail 6 to deviate, so that the position of the triangular head b of the positioning rod spring 5 can be finely adjusted in an interference mode, and the phenomena of virtual positioning of the gear, inaccurate positioning angle and the like are eliminated.
The utility model discloses a high accuracy gear positioning mechanism, installation and debugging are the final debugging after checking and accepting, need not to do any debugging again in follow-up use.
The utility model discloses a high accuracy gear positioning mechanism, on traditional positioning mechanism's basis, only increase one and finely tune locating bar spring 5 and eccentric nail 6 to make up into a locating spring pole subassembly with original locating spring pole 2. Simple structure and convenient operation.
Claims (7)
1. A high-precision gear positioning mechanism is characterized by comprising a positioning spring rod, a finely adjustable positioning rod spring and a finely adjustable eccentric nail; the positioning spring rod comprises an upper rod body and a lower rod body which are connected into a whole to form a certain angle, the connecting part of the upper rod body and the lower rod body is a fixed point, the upper rod body and the lower rod body can rotate around the fixed point, the tail part of the lower rod body abuts against a limiting point, and the limiting point is provided with a limiting block; the finely adjustable positioning rod spring comprises an upper rod body and a lower rod body which are connected into a whole and form a certain angle with each other, the front part of the upper rod body is provided with a triangular head part which can be inserted into a positioning hole of a gear to realize gear positioning, and the lower rod body is fastened with the upper rod body of the positioning spring rod through a screw; the eccentric nail comprises an upper-layer cylinder, a middle-layer cylinder and a small circular shaft positioned at the lower right part, and the upper-layer cylinder, the middle-layer cylinder and the small circular shaft are integrated; the center of the top surface of the upper layer cylinder of the eccentric nail is provided with a cross or straight groove matched with a cross or straight screwdriver; a small round shaft at the right lower part of the eccentric nail is riveted on an upper rod body of the positioning spring rod; the excircle of the middle-layer cylinder of the eccentric nail props against the inner side of the triangular head of the fine-adjustable positioning rod spring; the inner side of the triangular head of the fine-adjustable positioning rod spring is clamped below the upper-layer cylinder of the eccentric nail and above the upper rod body of the positioning spring rod.
2. The high accuracy gear positioning mechanism of claim 1 wherein the positioning spring rod and the finely adjustable positioning spring are metal.
3. The high-precision gear positioning mechanism according to claim 1, wherein the connecting portion of the upper rod body and the lower rod body of the positioning spring rod is fixed by a screw.
4. The high precision gear positioning mechanism of claim 1 wherein the lower body of the fine adjustable positioning spring is fastened to the upper body of the positioning spring rod by two screws.
5. The high precision gear positioning mechanism of claim 1, 2, 3 or 4 further comprising a gear; the triangular head part at the front part of the upper rod body of the fine-adjustable positioning rod spring is inserted into the positioning opening of the gear.
6. The high precision gear positioning mechanism of claim 5 wherein the gear is a camshaft gear.
7. The high precision gear positioning mechanism of claim 1, 2, 3 or 4 further comprising a pointer and an indication dial; the gear is positioned in the center of the indicating dial; the pointer is mounted on the central shaft of the gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121032334.9U CN214623319U (en) | 2021-05-14 | 2021-05-14 | High-precision gear positioning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121032334.9U CN214623319U (en) | 2021-05-14 | 2021-05-14 | High-precision gear positioning mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214623319U true CN214623319U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121032334.9U Active CN214623319U (en) | 2021-05-14 | 2021-05-14 | High-precision gear positioning mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214623319U (en) |
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2021
- 2021-05-14 CN CN202121032334.9U patent/CN214623319U/en active Active
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