Differential device

Abstract

The utility model discloses a differential device, which relates to the technical field of machinery, and comprises an input end cam, an input gear, an output double-gear shaft part, a gear train, a sector gear and a swinging part which are sequentially connected end to end, the input end cam rotates to respectively drive the input gear to rotate and the swinging part to swing, and the input gear drives the output double-gear shaft part to rotate; the swing component drives the fan-shaped gear to swing and rotate, the fan-shaped gear drives the gear train to reversely rotate relative to the output double-gear shaft part, resistance is applied to the gear train, and the rotating speed of the output double-gear shaft part can be consistent with the rotating speed of the input gear. According to the differential device, the output rotating speed of the output end can be consistent with the input rotating speed of the input end, the function similar to intermittent motion is achieved, the overall structure is compact, simple and easy to implement, the structure of each component can be singly adjusted, and operation is reliable and stable.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a differential device. Background Art

[0002] At present, the traditional differential device has a complex structure and poor stability, and is unable to make the rotation speed of the output end consistent with the rotation speed of the input end.

[0003] This paper aims to design a new differential device that can make the output speed at the output end consistent with the input speed at the input end, thus realizing a function similar to intermittent motion. Utility Model Content

[0004] In view of the above-mentioned shortcomings that currently exist, the utility model provides a differential device, which can make the output speed of the output end consistent with the input speed of the input end, thereby realizing a function similar to intermittent motion. The overall structure is compact and simple, and the structure of each component can be adjusted individually, and the operation is reliable and stable.

[0005] In order to achieve the above object, the embodiment of the utility model adopts the following technical solution:

[0006] A differential device comprises an input cam, an input gear, an output double-gear shaft, a gear train, sector teeth, and a swinging component connected end to end in sequence. The input cam rotates to drive the input gear to rotate and the swinging component to swing, and the input gear drives the output double-gear shaft to rotate; the swinging component drives the sector teeth to swing and rotate, and the sector teeth drive the gear train to rotate in the opposite direction relative to the output double-gear shaft and apply resistance to it, so that the rotation speed of the output double-gear shaft can be consistent with the rotation speed of the input gear.

[0007] According to one aspect of the utility model, the gear train includes a rotating frame and a planetary gear. The planetary gear is rotatably mounted on the rotating frame, and the planetary gear is cooperatively connected with the output double gear shaft.

[0008] According to one aspect of the utility model, it also includes a transition gear, the sector teeth are meshed with the transition gear, the rotating frame includes a fixed shaft and a planetary frame, both are fixed, the transition gear is connected to the fixed shaft, and the planetary gear is rotatably installed on the planetary frame.

[0009] According to one aspect of the utility model, a gear ring is provided on the rotating frame, and the sector-shaped teeth are meshed with the gear ring.

[0010] According to one aspect of the utility model, the output double gear shaft portion includes a transmission gear, an external gear shaft, and an internal gear shaft, the input gear is meshed with the transmission gear, the transmission gear is fixed on the external gear shaft, and the internal gear shaft is sleeved in the external gear shaft.

[0011] According to one aspect of the utility model, the planetary gear includes an outer mating wheel and an inner mating wheel, which are coaxially arranged, the outer mating wheel is matingly connected to the outer gear shaft, and the inner mating wheel is matingly connected to the inner gear shaft.

[0012] According to one aspect of the utility model, the input end cam is a cylindrical cam, the swing component includes a rocker rod and a connecting rod, the rocker rod is cooperatively connected to the input end cam, one end of the connecting rod is connected to the rocker rod, and the other end is connected to the sector tooth.

[0013] According to one aspect of the utility model, the cylindrical cam includes a column body and a spiral protrusion, which are fixed, and a notch is provided on the rocker arm, and the spiral protrusion is fitted and connected in the notch.

[0014] According to one aspect of the utility model, the cylindrical cam includes a column body and a spiral groove, wherein the spiral groove is arranged on the column body, and the rocker arm is connected with a driving block, and the driving block is fitted and connected in the spiral groove.

[0015] According to one aspect of the present invention, the rotation axis of the input gear is perpendicular to the rotation axis of the output dual gear shaft.

[0016] The advantages of the implementation of the utility model are as follows: the input end cam rotates, which drives the input gear to rotate and the swing component to swing respectively, and the input gear drives the output double gear shaft to rotate; the swing component drives the fan-shaped teeth to swing and rotate, and the fan-shaped teeth drive the gear train to rotate in the opposite direction relative to the output double gear shaft and apply resistance to it. When the input end cam rotates a certain angle (that is, after the swing component swings a certain angle, or after the gear train rotates in the opposite direction for a period of time), the output double gear shaft speed can be made consistent with the input gear speed, so that the two are relatively stationary (relatively stationary in speed), and a function similar to intermittent motion can be achieved. The overall structure of the device is compact, simple and easy to operate, and the structure of each component can be adjusted individually, and the operation is reliable and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the utility model from another angle;

[0020] Figure 3It is a schematic diagram of the top view structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model in the direction of A;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model in the direction of B.

[0023] The names corresponding to the serial numbers in the figure are as follows:

[0024] 1. Input cam; 2. Input gear; 3. Output gear; 4. Gear train; 41. Fixed shaft; 42. Planet carrier; 43. Outer mating wheel; 44. Inner mating wheel; 45. Rotating shaft; 5. Transition gear; 6. Sector tooth; 7. Swinging part; 71. Rocker rod; 72. Mounting sleeve; 8. Output double gear shaft; 81. Transmission gear; 82. Outer gear shaft; 83. Inner gear shaft; 9. Front sleeve seat; 10. Rear sleeve seat; 11. Column body; 12. Spiral protrusion. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model.

[0026] Embodiment 1

[0027] like Figure 1-Figure 5As shown, a differential device includes an input end cam 1, an input gear 2, an output double gear shaft 8, a gear train 4, a sector tooth 6, and a swing component 7 which are connected in end to end order; that is, the input end cam 1 is respectively connected to the input gear 2 and the swing component 7, the input gear 2 is connected to the output double gear shaft 8, the gear train 4 is respectively connected to the output double gear shaft 8 and the sector tooth 6, and the sector tooth 6 is connected to the swing component 7. The input end cam 1 rotates, which drives the input gear 2 to rotate and the swing component 7 to swing back and forth respectively. The rotation of the input gear 2 drives the output double-gear shaft 8 to rotate. At the same time, the reciprocating swing of the swing component 7 drives the sector tooth 6 to swing back and forth. The sector tooth 6 drives the gear train 4 to rotate in the opposite direction relative to the output double-gear shaft 8. The reversely rotating gear train 4 will apply a certain resistance to the output double-gear shaft 8. In this way, after the gear train 4 rotates in the opposite direction for a period of time (or after the swing component 7 swings to a certain angle or the input end cam 1 rotates to a certain angle), the rotation speed of the output double-gear shaft 8 can be consistent with the rotation speed of the input gear 2. At this time, the two are relatively stationary (relatively stationary in speed), and the device realizes a function similar to intermittent motion.

[0028] In this embodiment, the rotation axis of the input gear 2 is perpendicular to the rotation axis of the output dual gear shaft 8. The differential device also includes an output gear 3, which is fixed or keyed to the output end of the output dual gear shaft 8 for torque output.

[0029] In this embodiment, the swing component 7 includes a swing rod 71, a connecting rod, and a mounting sleeve 72, and the sector tooth 6 includes an integrated tooth body and a connecting sleeve rod; wherein the swing rod 71 is connected with the input end cam 1, one end of the connecting rod is fixed with the swing rod 71, and the other end is fixed with the connecting sleeve rod, and the connecting rod is sleeved in the mounting sleeve 72, and the mounting sleeve 72 is used for protection and installation. The input end cam 1 is a cylindrical cam; the cylindrical cam includes a column body 11 and a spiral protrusion 12, wherein the spiral protrusion 12 is fixed or integrally arranged on the periphery of the column body 11. The swing rod 71 is provided with a notch, and the spiral protrusion 12 is connected in the notch; in this way, when the cylindrical cam rotates, that is, the column body 11 and the spiral protrusion 12 rotate together, the swing rod 71 can be driven to swing back and forth through the matching connection of the spiral protrusion 12 and the notch, and then the swing rod 71 drives the connecting rod to rotate back and forth, thereby driving the connecting sleeve rod to swing back and forth and rotating, driving the tooth body to swing back and forth and rotating, that is, driving the sector tooth 6 to swing back and forth and rotating.

[0030] In this embodiment, the gear train 4 includes a rotating frame and planetary gears, wherein the planetary gears are rotatably mounted in the rotating frame via a rotating shaft 45, and the planetary gears are matched and connected with the output double gear shaft 8; the number of planetary gears is several, and three groups can be set, which are evenly distributed at intervals on the periphery of the output double gear shaft 8; the rotating frame is in the shape of a hollow cylinder, and has a cavity inside for mounting the planetary gears; a ring gear is integrally provided on the periphery of the rotating frame, and the sector teeth 6 are meshed with the ring gear. The output double gear shaft 8 can be only a double gear shaft, that is, it is made of a central shaft and two gear parts, or the output double gear shaft 8 includes an integrated output central shaft, a driving gear part, and a blocking gear part, and the driving gear part and the blocking gear part are arranged on the output central shaft one after the other; wherein the driving gear part is meshed with the input gear 2, the three groups of planetary gears are meshed on the periphery of the blocking gear part, and the output gear 3 is connected to the output end of the output central shaft.

[0031] The working principle of this embodiment is as follows: the input end cam 1 rotates, driving the input gear 2 to rotate and the swing component 7 to swing back and forth respectively; when the input gear 2 rotates, it drives the driving gear part to rotate, that is, drives the entire output double gear shaft 8 to rotate, and drives the output gear 3 to rotate at a high speed; when the swing component 7 swings back and forth, it drives the sector teeth 6 to swing back and forth and rotate, and the sector teeth 6 are meshed with the ring gear to drive the rotating frame to rotate in the opposite direction relative to the output double gear shaft 8 (or to rotate in the opposite direction relative to the output gear 3), and drives the planetary gear to revolve in the opposite direction around the blocking gear part of the output double gear shaft 8. At this time, the planetary gear revolving in the opposite direction will cause a certain resistance to the blocking gear part (or cause a certain resistance to the output double gear shaft 8). After a period of time (or after the swing component 7 swings to a certain angle or the input end cam 1 rotates to a certain angle), the rotation speed of the output double gear shaft 8 (or the rotation speed of the output gear 3) can be reduced to the same as the rotation speed of the input gear 2. At this time, the two are relatively stationary (relatively stationary in speed), and the device realizes a function similar to intermittent motion.

[0032] The beneficial effects of this embodiment are: the device can make the output speed of the output double gear shaft 8 (the speed of the output gear 3) consistent with the input speed of the input gear 2, realizing a function similar to intermittent motion; by setting the sector teeth 6 to mesh with the gear ring of the rotating frame, the device can simplify the structure and reduce the cost. The overall structure of the device is compact, simple and easy to operate, the structure of each component can be adjusted individually, and the operation is reliable and stable.

[0033] Embodiment 2

[0034] The difference between this embodiment and the first embodiment is that the differential device also includes a transition gear 5; the rotating frame includes an integrated fixed shaft 41 and a planetary carrier 42; the output double gear shaft 8 includes a transmission gear 81, an outer gear shaft 82, and an inner gear shaft 83; the planetary gear includes an outer mating wheel 43 and an inner mating wheel 44 which are coaxially arranged one after the other.

[0035] In this embodiment, the sector teeth 6 mesh with the transition gear 5, the transition gear 5 is connected to the end of the fixed shaft 41, and the planetary gear is rotatably mounted on the planetary carrier 42. The input gear 2 meshes with the transmission gear 81, which is fixed on the outer gear shaft 82, the outer gear shaft 82 is hollow, and the inner gear shaft 83 is sleeved inside the outer gear shaft 82; the outer mating wheel 43 meshes with the gear end of the outer gear shaft 82, and the inner mating wheel 44 meshes with the gear end of the inner gear shaft 83; the output gear 3 is connected to the output end of the inner gear shaft 83, and the output gear 3 is located outside the end of the outer gear shaft 82, and an axial gap is left between the two.

[0036] In this embodiment, bearings are provided at the front and rear ends between the inner gear shaft 83 and the outer gear shaft 82, the inner gear shaft 83 is provided inside the inner ring of the bearing, and the outer gear shaft 82 is provided outside the outer ring of the bearing. The differential device further includes a front sleeve seat 9 and a rear sleeve seat 10, wherein the front sleeve seat 9 is sleeved on the outer periphery of the outer gear shaft 82 for protection and installation, and a bearing is provided between the two; the rear sleeve seat 10 is sleeved on the outer periphery of the fixed shaft 41 for protection and installation, and a bearing is provided between the two.

[0037] In this embodiment, the planet carrier 42 includes a wheel disc body and a mounting disc which are separately arranged; the wheel disc body is in the shape of a cylinder with one end open, and a plurality of notches are arranged on the circumference of the side surface thereof to facilitate the exposure and installation of the planetary gears, and a plurality of holes are arranged on the circumference of the end surface thereof; the mounting disc is in the shape of a disc, and a plurality of rotating shafts 45 are fixed on the circumference thereof, and the rotating shafts 45 are inserted into the holes through hole-shaft matching, and the planetary gears (outer matching wheel 43, inner matching wheel 44) are arranged on the rotating shafts 45 through bearing sleeves; an opening is arranged in the center of the mounting disc to facilitate the insertion and installation of the gear ends of the inner gear shaft 83 and the outer gear shaft 82. The number and arrangement of holes, rotating shafts 45, and planetary gears are adapted, and three groups are arranged for each.

[0038] The working principle of this embodiment is as follows: the input end cam 1 rotates, driving the input gear 2 to rotate and the swing component 7 to swing back and forth respectively; when the input gear 2 rotates, it drives the transmission gear 81 to rotate, thereby driving the outer gear shaft 82 to rotate, and the gear end of the outer gear shaft 82 meshes with the outer mating wheel 43, and the outer mating wheel 43 and the inner mating wheel 44 are coaxially arranged, thereby driving the outer mating wheel 43 and the inner mating wheel 44 to rotate coaxially together, and the inner mating wheel 44 meshes with the gear end of the inner gear shaft 83, thereby driving the inner gear shaft 83 to rotate, that is, driving the output gear 3 to rotate at a high speed; when the swing component 7 swings back and forth, it drives the sector teeth 6 to swing back and forth, thereby driving the transition gear 5 to rotate back and forth, and the transition gear 5 is connected to the fixed shaft 41, and the fixed shaft 41 is connected to the planetary carrier 42 is integrally arranged, thereby driving the planetary carrier 42 to rotate in the opposite direction relative to the internal gear shaft 83 (or to rotate in the opposite direction relative to the output gear 3), driving the inner mating wheel 44 to revolve in the opposite direction around the gear end of the internal gear shaft 83 (and the outer mating wheel 43 to revolve in the opposite direction around the gear end of the outer gear shaft 82). At this time, the reversely revolving inner mating wheel 44 will cause a certain resistance to the internal gear shaft 83 (or to cause a certain resistance to the high-speed rotating output gear 3). After a period of time (or after the swing component 7 swings to a certain angle or the input end cam 1 rotates to a certain angle), the rotation speed of the internal gear shaft 83 (or the rotation speed of the output gear 3) can be reduced to the same as the rotation speed of the input gear 2. At this time, the two are relatively stationary (relatively stationary in speed), and the device realizes a function similar to intermittent motion.

[0039] The beneficial effects of this embodiment are: the device can make the output speed of the output double gear shaft 8 (the speed of the output gear 3) consistent with the input speed of the input gear 2, realizing a function similar to intermittent motion; through the meshing of the sector teeth 6 and the transition gear 5, and the matching connection between the inner and outer gear shafts 82 and the inner and outer matching wheels 43, the device can run more stably and move more accurately and flexibly. The overall structure of the device is compact, simple and easy to operate, and the structure of each component can be adjusted individually, and the operation is reliable and stable.

[0040] Embodiment 3

[0041] The difference between this embodiment and the first embodiment is that the cylindrical cam includes a column body 11 and a spiral groove, and the spiral groove is integrally formed on the cylindrical surface of the column body 11; a driving block is connected to the rocker arm 71, and the driving block is fitted and clamped in the spiral groove.

[0042] In this embodiment, the structural shape of the driving block is adapted to the structural shape of the spiral groove; the driving block can be a columnar block. When the cylindrical cam rotates, that is, the column body 11 and the spiral groove rotate together, the driving block can be driven to move along the spiral groove path through the matching connection of the driving block and the spiral groove, that is, the swing rod 71 is driven to swing back and forth, and then the swing rod 71 drives the connecting rod to rotate back and forth, thereby driving the connecting sleeve rod to swing back and forth, driving the tooth body to swing back and forth, that is, driving the sector tooth 6 to swing back and forth.

[0043] The beneficial effects of this embodiment are: the device can make the output speed of the output double gear shaft 8 (the speed of the output gear 3) consistent with the input speed of the input gear 2, and realize a function similar to intermittent motion; by setting the cylindrical cam into a column body 11 and a spiral groove structure, the structure of the device is simpler, easy to manufacture and process, and low in cost. The overall structure of the device is compact, simple and easy to operate, the structure of each component can be adjusted individually, and the operation is reliable and stable.

[0044] Advantages of the utility model:

[0045] 1. It can make the output speed of the output end consistent with the input speed of the input end, realizing a function similar to intermittent motion;

[0046] 2. The structure can be adjusted individually, and the operation is reliable and stable;

[0047] 3. The overall structure is compact and simple.

[0048] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A differential device, characterized in that: The invention comprises an input end cam (1), an input gear (2), an output double gear shaft (8), a gear train (4), a sector tooth (6), and a swing component (7) which are connected end to end in sequence. The input end cam (1) rotates to drive the input gear (2) to rotate and the swing component (7) to swing, and the input gear (2) drives the output double gear shaft (8) to rotate; the swing component (7) drives the sector tooth (6) to swing and rotate, and the sector tooth (6) drives the gear train (4) to rotate in the opposite direction relative to the output double gear shaft (8) and exerts resistance thereon, so that the rotation speed of the output double gear shaft (8) can be consistent with the rotation speed of the input gear (2).

2. The differential device according to claim 1, characterized in that: The gear train (4) comprises a rotating frame and a planetary wheel. The planetary wheel is rotatably mounted on the rotating frame and is cooperatively connected with an output double gear shaft (8).

3. The differential device according to claim 2, characterized in that: It also includes a transition gear (5), the sector teeth (6) meshing with the transition gear (5), the rotating frame including a fixed shaft (41) and a planetary frame (42), the two being fixed, the transition gear (5) being connected to the fixed shaft (41), and the planetary gear being rotatably mounted on the planetary frame (42).

4. The differential device according to claim 2, characterized in that: The rotating frame is provided with a gear ring, and the sector teeth (6) are meshed with the gear ring.

5. The differential device according to claim 2, characterized in that: The output double gear shaft (8) comprises a transmission gear (81), an external gear shaft (82), and an internal gear shaft (83); the input gear (2) is meshed with the transmission gear (81); the transmission gear (81) is fixed on the external gear shaft (82); and the internal gear shaft (83) is sleeved inside the external gear shaft (82).

6. The differential device according to claim 5, characterized in that: The planetary gear comprises an outer mating wheel (43) and an inner mating wheel (44), which are coaxially arranged. The outer mating wheel (43) is matingly connected to the outer gear shaft (82), and the inner mating wheel (44) is matingly connected to the inner gear shaft (83).

7. The differential device according to claim 1, characterized in that: The input end cam (1) is a cylindrical cam, the swing component (7) comprises a swing rod (71) and a connecting rod, the swing rod (71) is cooperatively connected to the input end cam (1), one end of the connecting rod is connected to the swing rod (71), and the other end is connected to the sector tooth (6).

8. The differential device according to claim 7, characterized in that: The cylindrical cam comprises a column body (11) and a spiral protrusion (12), which are fixed. A notch is provided on the rocker rod (71), and the spiral protrusion (12) is fitted and connected in the notch.

9. The differential device according to claim 7, characterized in that: The cylindrical cam comprises a column body (11) and a spiral groove, wherein the spiral groove is arranged on the column body (11), and the rocker rod (71) is connected with a driving block, and the driving block is matched and connected in the spiral groove.

10. The differential device according to claim 1, characterized in that: The rotation axis of the input gear (2) is perpendicular to the rotation axis of the output double gear shaft (8).

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