CN213511909U - Zero return difference miniature gear reducer - Google Patents

Abstract

The utility model discloses a zero return difference miniature gear reducer, it includes: the gear set comprises a first gear set, a second gear set and a third gear set which are sequentially connected from top to bottom, wherein clamping plates are arranged among the first gear set, the second gear set and the third gear set, the third gear set is connected with an output shaft, and the first gear set is connected with the output end of a motor. The utility model discloses a return difference is eliminated to two way gear inputs, the transmission mode of output all the way, stable in structure, and production and processing is convenient, effectively optimizes the return difference precision of reduction gear, improves reduction gear operating efficiency.

Description

Zero return difference miniature gear reducer

Technical Field

The utility model relates to a reduction gear field, specifically speaking relates to a zero return difference miniature gear reduction unit.

Background

The gear reducer is an independent closed transmission between the prime mover and the working machine for reducing the rotational speed and increasing the torque. The existing spur gear reducer is driven by a plurality of stages of gears to reduce the rotating speed of a motor and increase output torque to move. However, in reality, in many application scenarios, the speed reducer needs to rotate forward and backward, and because there is a gap in gear engagement, there will be backlash, the backlash is larger as the number of stages is larger, for example, the backlash is about 3 degrees in a micro spur gear speed reducer with a diameter within 15mm, and the backlash may be larger under the condition of unreasonable design or poor manufacturing precision. Therefore, the common miniature spur gear reducer can not meet the use requirement on occasions with high requirements on the positioning precision of forward and reverse rotation control.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses a zero return difference miniature gear reducer, which adopts two paths of gear inputs and one path of output transmission mode to eliminate the return difference, has stable structure and convenient production and processing, optimizes the return difference precision of the reducer and improves the running efficiency of the reducer; it includes:

the gear set comprises a first gear set, a second gear set and a third gear set which are sequentially connected from top to bottom, wherein clamping plates are arranged among the first gear set, the second gear set and the third gear set, the third gear set is connected with an output shaft, and the first gear set is connected with the output end of a motor.

Preferably, the first gear set includes:

the pair of first gears are connected with the output end of the motor;

the second gears and the first gears are arranged in equal quantity, the second gears are connected below the first gears, and the second gears penetrate through the clamping plate;

and the third gears and the second gears are arranged in equal quantity, the third gears are meshed with the second gears, and the third gears are connected with the input end of the second gear set.

Preferably, the second gear set includes:

the fourth gears and the third gears are arranged in equal quantity, the fourth gears are connected below the third gears, and the fourth gears penetrate through the clamping plates;

and the fifth gear and the fourth gear are arranged in equal quantity, the fifth gear is meshed with the fourth gear, and the fifth gear is connected with the input end of the third gear set.

Preferably, the third gear set includes:

the sixth gears and the fifth gears are arranged in equal quantity, and the sixth gears are connected below the fifth gears;

and the output wheel is meshed with the sixth gear and is connected with the output shaft.

Preferably, the zero-return-difference miniature gear reducer further comprises:

casing and base, first gear train, second gear train and third gear train install in the casing, base and splint parallel arrangement, and be connected with the motor output, the casing with splint and base cooperation are connected.

Preferably, the base includes:

the base is provided with an input shaft hole, the input shaft hole is connected with a motor output shaft, the end, far away from the motor, of the base is provided with a sealing groove in a position close to the edge, the sealing groove is sleeved with a sealing ring and then is connected with the shell in a matched mode, four elastic clamping blocks are evenly arranged on the side wall of the base, and the elastic clamping blocks are connected with the shell in a clamped mode.

Preferably, the housing includes:

guide way, ring channel, installation draw-in groove and oilhole, four the guide way is seted up in casing one end is inboard, the ring channel ring is located the casing is inboard, and with the guide way is connected, the ring channel degree of depth with the guide way groove depth is unanimous, four installation draw-in groove sets up in the ring channel, and with the guide way interval sets up, installation draw-in groove with the base block is connected, the oilhole is seted up in the casing lateral wall.

Preferably, the second gear sets are arranged into one or more groups, each group of second gear sets is separated by a clamping plate, each group of fourth gears penetrates through the clamping plate and is connected below the last group of fifth gears, and each group of fifth gears is meshed with the fourth gears in the current group.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic view of the installation structure of the present invention;

FIG. 3 is a schematic view of the base structure of the present invention;

fig. 4 is a schematic view of the shell structure of the present invention.

In the figure: 1. a first gear set; 2. a second gear set; 3. a third gear set; 4. a housing; 6. a base; 10. a pillar; 11. a first gear; 12. a second gear; 13. a third gear; 15. a shaft core; 21. a fourth gear; 22. a fifth gear; 31. a sixth gear; 32. an output wheel; 33. an output shaft; 34. a splint; 41. a guide groove; 42. an annular groove; 43, installing a clamping groove; 44. an oil hole; 61. an input shaft hole; 62. an elastic clamping block; 63. sealing the groove.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1-2, the present embodiment provides a zero-backlash micro gear reducer, which includes:

first gear train 1, second gear train 2 and third gear train 3 that top-down connected gradually, be provided with splint 34 between first gear train 1, second gear train 2 and the third gear train 3, third gear train 3 is connected with output shaft 33, first gear train 1 is connected with the motor output.

The utility model discloses a theory of operation and beneficial effect do:

the utility model provides a zero return difference miniature gear reducer, the motor output end meshes with a pair of first gear 11 of first gear train 1 simultaneously, first gear train 1, second gear train 2 and third gear train 3 connect gradually, a pair of sixth gear 31 of third gear train 3 meshes with output wheel 32 simultaneously, output wheel 32 and output shaft 33 fixed connection to form two complete gear transmission paths; when the speed reducer works, the starting gear at the output end of the motor rotates clockwise (anticlockwise), the two gears rotate in opposite directions, finally, the rotating speed and the torque are output through the output wheel 32, one of the two gears serves as a main transmission gear, the other gear is used for adjusting the meshing clearance of the gears, the return difference is eliminated, and when the speed reducer rotates forwards and backwards alternately, the two gears alternate in action. The utility model discloses a return difference is eliminated to two way gear inputs, the transmission mode of output all the way, stable in structure, and production and processing is convenient, effectively optimizes the return difference precision of reduction gear, improves reduction gear operating efficiency.

In one embodiment, the first gear set 1 includes:

a pair of first gears 11, wherein the first gears 11 are connected with the output end of the motor;

the second gear 12 and the first gear 11 are arranged in equal number, the second gear 12 is connected below the first gear 11, and the second gear 12 penetrates through the clamping plate 34;

and the third gear 13 and the second gear 12 are arranged in equal number, the third gear 13 is meshed with the second gear 12, and the third gear 13 is connected with the input end of the second gear set 2.

The working principle and the beneficial effects of the technical scheme are as follows:

when in work, the output end of the motor is meshed with the pair of first gears 11 simultaneously, the pair of second gears 12 are respectively connected below the first gears 11, and rotates in synchronization with the first gear 11, the bridge 34 is connected between the first gear 11 and the second gear 12, the pair of third gears 13 are engaged with the pair of second gears 12, respectively, the third gear 13 and the first gear 11 are opposite in rotation direction, a pair of the third gears 13 are respectively connected with the input end of the second gear set 2, thereby drive second gear train 2 rotates, a pair of first gear 11 rotation direction is opposite, and the direction that produces the clearance when the gear meshing is also opposite, helps eliminating gear meshing clearance, effectively reduces the return difference that produces when the gear reversal, and parameters such as two sets of gear teeth number, modulus, geometric dimensions are the same completely, are convenient for production and processing and gear assembly.

In one embodiment, the second gear set 2 includes:

the fourth gear 21 and the third gear 13 are arranged in equal number, the fourth gear 21 is connected below the third gear 13, and the fourth gear 21 penetrates through the clamping plate 34;

and the fifth gear 22 and the fourth gear 21 are arranged in equal number, the fifth gear 22 is meshed with the fourth gear 21, and the fifth gear 22 is connected with the input end of the third gear set 3.

The working principle and the beneficial effects of the technical scheme are as follows:

the pair of fourth gears 21 are respectively connected below the third gear 13 and synchronously rotate with the third gear 13, the clamping plate 34 is connected between the third gear 13 and the fourth gear 21, and the pair of fifth gears 22 are respectively meshed with the pair of fourth gears 21, so that the directions of the fifth gears 22 and the third gear 13 are opposite, the pair of fifth gears 22 are respectively connected with the input end of the third gear set 3, so as to drive the third gear set 3 to rotate, after the first gear 11 is driven by the first gear set 1 and the second gear set 2, the fifth gears 22 are ensured to be consistent with the rotating direction of the corresponding first gear 11, multi-stage speed reduction is realized in a limited space, the space utilization rate of the speed reducer is improved, and the transmission is smooth.

In one embodiment, the third gear set 3 includes:

a sixth gear 31, wherein the number of the sixth gear 31 is equal to that of the fifth gear 22, and the sixth gear 31 is connected below the fifth gear 22;

and an output wheel 32, wherein the output wheel 32 is meshed with the sixth gear 31, and the output wheel 32 is connected with an output shaft 33.

The working principle and the beneficial effects of the technical scheme are as follows:

the pair of sixth gears 31 are respectively connected below the fifth gear 22 and synchronously rotate with the fifth gear 22, the pair of sixth gears 31 are simultaneously meshed with the output wheel 32 to form a path of output, the rotating directions of the output wheel 32 and the output shaft 33 are consistent with the rotating direction of the output end of the motor to form complete gear transmission, one sixth gear 31 is used as a transmission gear, and the other sixth gear 31 is used for adjusting the meshing gap of the gears while transmitting, so that the return difference generated during gear reversal is effectively reduced, and the operating efficiency of the speed reducer is improved.

In one embodiment, adjacent splints 34 are connected by struts 10, and the first gear set 1, the second gear set 2 and the third gear set 3 are connected in the splints by shaft cores 15.

The working principle and the beneficial effects of the technical scheme are as follows:

a splint 34 is arranged below the first gear set 1, the second gear set 2 and the third gear set 3, and are separated by a clamping plate 34, three clamping plates 34 and a base 6 are enclosed into three cavities with the shell 4, the clamp plate 34 and the base 6 are respectively provided with a strut mounting hole and a shaft core mounting hole, the strut 10 is arranged by penetrating the clamp plate 34, and is connected with the pillar mounting hole to ensure the mounting space between the clamping plates 34, the shaft core 12 is arranged through the clamping plates 34, connected with the clamping plates 34 and the shaft core mounting holes of the base 6, the first gear set 1, the second gear set 2 and the third gear set 3 are connected on a shaft core 15, the shaft core 15 is used as a rotating shaft of the gear, so that the accurate installation and flexible rotation of the gear are ensured, set up threely simultaneously splint 34 strengthens the stability of structure, prevents that the reduction gear unstability from producing the damage when the moment of torsion is too big.

In one embodiment, as shown in fig. 3, the zero-backlash micro-gear reducer further includes:

casing 4 and base 6, first gear train 1, second gear train 2 and third gear train 3 install in the casing 4, base 6 and splint 34 parallel arrangement, and be connected with the motor output end, casing 4 with splint 34 and base 6 cooperation are connected.

The working principle and the beneficial effects of the technical scheme are as follows:

base 6 forms sealed cavity space jointly with casing 4 and splint 34 for the installation of gear train, base 6 is equipped with input shaft hole 61, with motor output shaft, has guaranteed the accuracy of motor mounted position, casing 4, base 6 and splint 34 are sealed to be set up, keep apart gear train and external, avoid debris such as dust to get into the reduction gear in, reduce the damage to the gear, guarantee the reduction gear steady operation, the interpolation and the sealing of the lubricating oil of being convenient for simultaneously, extension reduction gear life.

In one embodiment, the base 6 comprises:

input shaft hole 61, elasticity fixture block 62 and seal groove 63, set up input shaft hole 61 on the base 6, input shaft hole 61 and motor output shaft, the base 6 is kept away from the motor end and is close to border position ring and be equipped with seal groove 63, seal groove 63 cover establish behind the sealing washer with the casing 4 cooperation is connected, 6 lateral walls of base evenly set up four elasticity fixture blocks 62, elasticity fixture block 62 with casing 4 block is connected.

The working principle and the beneficial effects of the technical scheme are as follows:

the motor output shaft wears to establish input shaft hole 61, and with input shaft hole 61 rotates to be connected, input shaft hole 61 set up in 6 centers of base have ensured the installation accuracy of motor shaft, seal groove 63 is seted up to base 6, and the reduction gear operation need be to inside injection lubricating oil, overlaps on seal groove 63 and establishes the sealing washer, during the installation the sealing washer with 4 inner wall interference fit of casing seal the reduction gear, prevent debris such as dust to get into inside the reduction gear, avoid taking place the oil leak phenomenon simultaneously, 6 lateral walls of base set up elastic fixture block 62, elastic fixture block 62 adopts elastic material to make, and is the wedge setting, is connected with installation slot 43 block, guarantees 6 installations of base are firm, prevents base 6 with casing 4 breaks away from, avoids simultaneously 6 production circumferential direction of base.

As shown in fig. 4, in one embodiment, the housing 4 includes:

guide way 41, ring channel 42, installation draw-in groove 43, and oilhole 44, four guide way 41 opens and is in 4 one end inboards of casing, ring channel 42 is located the casing 4 is inboard, and with guide way 41 is connected, the ring channel 42 degree of depth with the guide way 41 depth of groove is unanimous, four installation draw-in groove 43 opens and is located on the ring channel 42, and with the guide way 41 interval sets up, installation draw-in groove 43 with base 6 block is connected, oilhole 44 opens and is located the casing 4 lateral wall.

The working principle and the beneficial effects of the technical scheme are as follows:

the shell 4 is provided with an oil hole 44 for filling oil or discharging oil into the shell 4; when the base 6 is installed, the elastic clamping block 62 is aligned with the position of the guide groove 41 and clamped into the guide groove, the elastic clamping block 62 is compressed to deform, the guide groove 41 enters the annular groove 42, the elastic clamping block 62 slides in the annular groove 62 and rotates for a certain angle, and after the elastic clamping block reaches the position of the installation clamping groove 43, the elastic clamping block 62 deforms and recovers and is clamped in the installation clamping groove 43. Installation draw-in groove 43 carries out the block with elasticity fixture block 62 to realize the spacing of base 6, installation draw-in groove 43 with the guide way 41 interval sets up, base 6 need pass through ring channel 42 when withdrawing from casing 4, prevents elasticity fixture block 62 directly along installation draw-in groove 43 roll-off, ensures base 6 and casing 4 installation are firm, improve the installation accuracy of reduction gear structure, further improve the reliability of reduction gear.

In one embodiment, the second gear sets 2 are arranged in one or more groups, each group of second gear sets 2 is separated by a clamping plate 34, each group of the fourth gears 21 passes through the clamping plate 34 and is connected below the previous group of the fifth gears 22, and each group of the fifth gears 22 is meshed with the fourth gear 21 in the current group.

The working principle and the beneficial effects of the technical scheme are as follows:

according to reduction gear drive ratio designing requirement, will second gear set 2 sets up to a set of or multiunit, 2 group numbers of second gear set increase thereupon, and the reduction gear height increases thereupon, and the reduction ratio also increases thereupon, through the increase and decrease different reduction ratios can be realized to the group number of second gear set 2 to adapt to different service conditions, make the use of reduction gear more nimble, the range of application is wider, and the practicality is better.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (9)

1. A zero-backlash miniature gear reducer, comprising:

the gear transmission mechanism comprises a first gear set (1), a second gear set (2) and a third gear set (3) which are sequentially connected from top to bottom, wherein a clamping plate (34) is arranged among the first gear set (1), the second gear set (2) and the third gear set (3), the third gear set (3) is connected with an output shaft (33), and the first gear set (1) is connected with a motor output end.

2. A zero-backlash micro-gear reducer according to claim 1, wherein said first set of gears (1) comprises:

the pair of first gears (11) is connected with the output end of the motor;

the second gear (12) and the first gear (11) are arranged in equal number, the second gear (12) is connected below the first gear (11), and the second gear (12) penetrates through the clamping plate (34);

the third gear (13) and the second gear (12) are arranged in an equal number, the third gear (13) is meshed with the second gear (12), and the third gear (13) is connected with the input end of the second gear set (2).

3. A zero-backlash micro-gear reducer according to claim 2, wherein said second set of gears (2) comprises:

the fourth gear (21) and the third gear (13) are arranged in equal number, the fourth gear (21) is connected below the third gear (13), and the fourth gear (21) penetrates through the clamping plate (34);

the fifth gear (22) and the fourth gear (21) are arranged in an equal number, the fifth gear (22) is meshed with the fourth gear (21), and the fifth gear (22) is connected with the input end of the third gear set (3).

4. A zero-backlash micro-gear reducer according to claim 3, wherein said third set of gears (3) comprises:

a sixth gear (31), wherein the number of the sixth gear (31) is equal to that of the fifth gear (22), and the sixth gear (31) is connected below the fifth gear (22);

an output wheel (32), the output wheel (32) is meshed with the sixth gear (31), and the output wheel (32) is connected with an output shaft (33).

5. A zero-backlash micro-gear reducer according to claim 1, wherein adjacent said clamping plates (34) are connected by a strut (10), and said first (1), second (2) and third (3) gear sets are connected by a shaft core (15) in said clamping plates (34).

6. The zero backlash micro gear reducer according to claim 1, further comprising: casing (4) and base (6), first gear train (1), second gear train (2) and third gear train (3) install in casing (4), base (6) and splint (34) parallel arrangement, and be connected with the motor output end, casing (4) with splint (34) and base (6) cooperation are connected.

7. A zero-backlash micro-gear reducer according to claim 6, wherein said base (6) comprises: input shaft hole (61), elasticity fixture block (62) and seal groove (63), set up input shaft hole (61) on base (6), input shaft hole (61) and motor output shaft, base (6) are kept away from motor end and are close to border position ring and are equipped with seal groove (63), seal groove (63) cover establish behind the sealing washer with casing (4) cooperation is connected, base (6) lateral wall evenly sets up four elasticity fixture block (62), elasticity fixture block (62) with casing (4) block is connected.

8. A zero-backlash micro-gear reducer according to claim 6, wherein said housing (4) comprises: guide way (41), ring channel (42), installation draw-in groove (43) and oilhole (44), four guide way (41) are seted up casing (4) one end is inboard, ring channel (42) ring is located casing (4) are inboard, and with guide way (41) are connected, ring channel (42) degree of depth with guide way (41) depth of groove is unanimous, four installation draw-in groove (43) are seted up on ring channel (42), and with guide way (41) interval sets up, installation draw-in groove (43) with base (6) block is connected, oilhole (44) are seted up in casing (4) lateral wall.

9. A zero-backlash micro-gear reducer according to claim 3, wherein said second gear sets (2) are arranged in one or more groups, each group of second gear sets (2) is separated by a clamping plate (34), each group of said fourth gears (21) is inserted through the clamping plate (34) and connected below the previous group of said fifth gears (22), each group of said fifth gears (22) is meshed with the fourth gears (21) in the current group.

Images