CN208707465U - A kind of micromotor - Google Patents

Abstract

The utility model discloses a kind of micromotors, including motor and retarder, the motor is connect by a connection ring with the retarder, the retarder has a cabinet, the intracorporal cavity side of case is equipped with multiple gear teeth, one planet carrier passes through the cabinet and extends to outside the cabinet, multiple planetary gears pass through the planet carrier upper end and with the intracorporal gear teeth meshing of the case, one sun gear one end is protruded into the planet carrier upper end and is engaged with multiple planetary gears, the transmission axis connection of the sun gear other end and the motor, the motor drives the sun gear rotation, the multiple planetary gears of sun wheel drive are rotated together along the intracorporal gear teeth of the case, multiple planetary gears drive the planet carrier rotation, and then drive operating mechanism's operation.The micromotor of the utility model effectively reduces the volume of entire motor, and precision is higher, and service life is longer, and conductive effect is good, and motor efficiency of transmission is high, and output torque is big.

Description

A kind of micromotor

Technical field

The utility model belongs to miniature fingerprint padlock technology field more particularly to a kind of micromotor.This product is served only for Miniature fingerprint-based padlock.

Background technique

Currently, the fields such as robot, smart lock are both needed to realize the conversion or transmitting of electric energy, especially smart lock by motor The miniature Fingerprint Lock in field, miniature Fingerprint Lock are a kind of using the fingerprint at human finger position as the smart lock of identification carrier and means Tool, it is the perfect crystallization of computer information technology, electronic technology, mechanical technique and modern five gold process, and the core of Fingerprint Lock Heart component motor is driver, is the conversion maincenter of entire Fingerprint Lock strength, if motor stops working or obstacle, lock will be automatic It opens and can not lock, due to the restriction in space in Fingerprint Lock, Fingerprint Lock motor need to be accomplished to minimize, while meet various aspects Can, many motor sizes are 10*12*31mm or so in the market, since structure is not compact enough, cause motor volume larger, can not Meet smaller space requirement, while the deceleration device on motor transmits energy simply by multiple scattered gear engagements, Precision is lower, and service life is shorter.

Therefore, inventor is dedicated to designing the new motor of one kind to solve the above problems.

Utility model content

The purpose of this utility model is that: a kind of micromotor is provided, not only small volume, but also precision is higher, used It lasts a long time.

In order to achieve the above object, technical solution adopted in the utility model are as follows:

A kind of micromotor, including motor and retarder, the motor are connect by a connection ring with the retarder, institute Retarder is stated with a cabinet, the intracorporal cavity side of case is equipped with multiple gear teeth, and a planet carrier passes through the cabinet and prolongs Extend to outside the cabinet, multiple planetary gears pass through the planet carrier upper end and with the intracorporal gear teeth meshing of the case, a sun gear One end is protruded into the planet carrier upper end and is engaged with multiple planetary gears, the transmission of the sun gear other end and the motor Axis connection；

The motor drives the sun gear rotation, and the multiple planetary gears of sun wheel drive are along in the cabinet The gear teeth rotate together, multiple planetary gears drive the planet carrier rotation, and then drive operating mechanism's operation；

The motor length is 9.3 ± 0.2mm, and the cabinet length is 4.6~4.8mm, the motor and box body diameter For 6 ± 0.05mm, the retarder transmission ratio is 145, and the retarder output revolving speed is 2046rpm and its output torque is 6.4g-cm。

Further, the planet carrier has a body part, and the body part abuts the annular protrusion of the cavity bottom, institute It states body part and has extended downwardly a rotary shaft.

Further, multiple notches of the body part side are equipped with the side for accommodating and being clamped the corresponding planetary gear Mounting hole, the body part upper surface are equipped with the upper installing hole being connected to all side mounting holes.

Further, the sun gear upper surface is equipped with an axis hole for cooperating with the transmission shaft of the motor, it is described too Sun wheel bottom is equipped with a protrusion, and the protrusion abuts the upper installing hole bottom.

Further, the rotary shaft is equipped with the card slot of an annular, and a circlip is sheathed on the card slot, the circlip position In outside the cabinet and abutting the tank floor.

Further, the connection ring is fixedly connected with the motor by screw thread and is engaged with the cabinet, the connection A positioning column is extended on ring, the positioning column extends in the motor.

Further, the motor has a motor body, and the motor body upper cover is equipped with a rear cover.

Further, the rear cover has a shell, and the shell is equipped with two pairs of boss, each pair of boss cooperation fixing There is one to be used for the contact flat spring V-shaped with the motor body armature spindle Elastic Contact, two contact flat spring opening directions On the contrary.

Further, it is set on the shell there are two through-hole, described two through-holes are located at two contact flat springs and hold end Near, both threads cable is each passed through two through-holes and is fixedly connected with corresponding contact flat spring.

Further, the sun gear is integrally formed with the planetary gear.

Compared with prior art, the utility model has following technical effect: by planetary gear speed-reduction, while by retarder Cabinet as planetary gear gear ring, it is compact-sized, effectively reduce the volume of entire motor, and precision is higher, use It lasts a long time, conductive by two contact flat spring Elastic Contacts between armature spindle and cable, conductive effect is good, motor efficiency of transmission Height, output torque are big.

Detailed description of the invention

Fig. 1 is the utility model micromotor main view；

Fig. 2 is the utility model retarder top view；

Fig. 3 is A-A sectional view in Fig. 2；

Fig. 4 is that the utility model planetary gear set enters rear and sun gear perspective view in planet carrier；

Fig. 5 is the utility model connection ring top view；

Fig. 6 is the utility model upper cover top view.

It illustrates:

1, motor, 11, motor body, 12, rear cover, 121, shell, 1211, outer lug boss, 1212, inner convex platform, 1213, limit Slot, 1214, through-hole, 1215, side wall, 122, contact flat spring, 1221, holding parts, 1222, bending section, 1223, elastic contact part, 1224, weld part, 2, retarder, 21, cabinet, 211, clamping portion, 2111, blocked hole, 22, planet carrier, 221, body part, 2211, upper installing hole, 2212, side mounting hole, 222, rotary shaft, 2221, card slot, 23, planetary gear, 24, sun gear, 241, convex It rises, 242, axis hole, 25, circlip, 3, connection ring, 31, positioning column, 32, protrusion, 33, buckle, 34, counter sink.

Specific embodiment

With reference to the accompanying drawing, the embodiments of the present invention is specifically illustrated, attached drawing is only for reference and illustrates use, not structure The limitation of pairs of the utility model patent protection scope.

Referring to figs. 1 to Fig. 4, a kind of micromotor, including motor 1 and retarder 2, the motor 1 by a connection ring 3 with Retarder 2 connects, which has a cabinet 21, and the cavity side in the cabinet 21 is equipped with multiple gear teeth, a planet carrier 22 It across cabinet 21 and extends to outside cabinet 21, multiple planetary gears 23 pass through 22 upper end of planet carrier and nibble with the gear teeth in cabinet 21 It closes, 24 one end of a sun gear is protruded into 22 upper end of planet carrier and engaged with multiple planetary gears 23,24 other end of sun gear and motor 1 It is driven axis connection, motor 1 drives sun gear 24 to rotate, and sun gear 24 drives multiple planetary gears 23 along the gear teeth one in cabinet 21 Rotation is played, multiple planetary gears 23 drive planet carrier 22 to rotate, and then drive operating mechanism's operation.

Referring to figs. 1 to Fig. 3, the cavity bottom of the cabinet 21 is equipped with the protrusion of an annular, and it is logical which is equipped with one Hole, planet carrier 22 pass through the through-hole, and the cavity sidewalls of cabinet 21 are toothed around, the preferred straight-tooth of the utility model, 21 structure of cabinet At planetary gear gear ring, 21 upper surface edge of cabinet upwardly extends the clamping portion 211 of multiple arcs, two neighboring arc Clamping portion 211 between form a groove, two neighboring recess width is unequal, each clamping portion 211 be equipped with a blocked hole 2111。

Referring to figs. 1 to Fig. 4, the planet carrier 22 is integrally formed, which has a body part 221, the body part 221 are contained in the cavity of cabinet 21, which abuts the annular protrusion of 21 cavity bottom of cabinet, not only reduce planet The contact area of frame 22 and cabinet 21, convenient for reducing 22 rotation friction of planet carrier, moreover it is possible to prevent planet carrier 22 from moving down, this 221 side of body portion is equipped with multiple notches, and each notch is equipped with the side mounting hole 2212 for accommodating corresponding planetary gear 23, the side Mounting hole 2212 runs through 221 upper and lower end faces of body part, which is less than mid diameter, side peace It fills 2212 mid diameter of hole and is greater than 23 maximum gauge of planetary gear, which is equipped with one for accommodating sun gear 24 upper installing hole 2211,2211 diameter of upper installing hole are greater than 24 diameter of sun gear, and the upper installing hole 2111 and all sides are installed Hole 2212 is connected to, so that sun gear 24 engages simultaneously with multiple planetary gears 23, body part 221 has extended downwardly one and has been used for and work The rotary shaft 222 of mechanism connection, rotary shaft 222 are equipped with one for installing the card slot 2221 of circlip 25 in a ring, rotary shaft 222 Across 21 cavity bottom of cabinet through-hole and extend to outside cabinet 21, circlip 25 is sheathed on card slot 2221, which is located at Cabinet 21 is outer and abuts 21 bottom surface of cabinet, prevents planet carrier 22 from moving up.

Multiple planetary gears 23 are made of one piece, and the preferred planetary gear 23 of the utility model is straight-tooth, each planetary gear 23 Upper and lower ends are extended with shaft, which is connected in 2212 upper and lower ends of side mounting hole, so that multiple planetary gears 23 are pacified in side Rotation, each planetary gear 23 in hole 2212 is filled to be revealed in the corresponding notch in 221 side of body part and extend to outside the notch, so as to Planetary gear 23 and 21 inside gear teeth meshing of cabinet.

Sun gear 24 is integrally formed, and the preferred sun gear 24 of the utility model is straight-tooth, and 24 upper end of sun gear is cylinder, Straight-tooth is located at 24 lower end side of sun gear, and 24 upper surface of sun gear is equipped with an axis hole for cooperating with the transmission shaft of motor 1 242, which is equipped with a protrusion 241, which abuts 2211 bottom of upper installing hole, to reduce sun gear Contact area between 24 and planet carrier 22, and then reduce 24 rotation friction of sun gear.

Referring to Fig.1 and Fig. 5, the connection ring 3 are used to connect retarder 2 and motor 1, which is extended with more A protrusion 32, two neighboring 32 width of protrusion is unequal, by two neighboring clamping portion on multiple protrusions 32 and cabinet 21 The groove formed between 211 is corresponding, which is additionally provided with multiple buckles 33, which is located at two neighboring protrusion Between portion 32, when connection ring 3 is connect with cabinet 21, protrusion 32 is protruded into corresponding 21 groove of cabinet, the corresponding card of buckle 33 In the blocked hole 2111 for entering corresponding clamping portion 211,3 lower end surface of connection ring is set there are two counter sink 34, and two bolts are each passed through Two counter sinks 34 are simultaneously threadedly coupled with motor 1, and 3 upper surface of connection ring is equipped with the positioning column 31 to play the role of positioning, when connection ring 3 When being fixedly connected with motor 1, positioning column 31 passes through the through-hole of 1 lower end surface of motor and protrudes into motor 1, and 3 center of connection ring is also set There is a through-hole, the transmission shaft convenient for motor 1 passes through the through-hole and protrudes into axis hole 262.

Referring to Fig.1, the motor 1 has a motor body 11, and the transmission shaft of 11 lower end of motor body protrudes into sun gear In 24 axis hole 242, which is equipped with a rear cover 12.

Referring to Fig. 6, the rear cover 12 has a shell 121, which is equipped with two pairs of boss, each pair of convex Platform includes an outer lug boss 1211 and an inner convex platform 1212, and 1211 medial surface indent of outer lug boss, inner convex platform 1212 is corresponding to be outwardly protruded, The concave portion cooperation of outer lug boss 1211 and inner convex platform 1212 for holding a contact flat spring 122, set on the shell 121 there are two Through-hole 1214, two through-holes 1214 are located near two inner convex platforms 1212, and 121 edge of shell has also extended downwardly multiple arcs The side wall 1215 of shape, 121 inside center of shell are equipped with a limiting slot 1213, and two contact flat springs 122 are V-shaped and opening direction phase Instead, which has a holding parts 1221, the holding parts 1221 be immobilizated in outer lug boss 1211 and inner convex platform 1212 it Between, which forms bending section 1222, which is fixed on shell 121 by glue, should Bending section 1222 forms elastic contact part 1223 after extending, which is located at 1213 top of limiting slot, the fixing The inside bending of 1221 other end of portion forms a weld part 1224, which is located at corresponding 1214 top of through-hole, both threads Cable is each passed through two through-holes 1214 and is welded and fixed with corresponding weld part 1224, two fixings of two contact flat springs 122 Portion 1221 is parallel, and the elastic contact part 1223 of two contact flat springs 122 is parallel, the holding parts 1221 on same contact flat spring 122 Angle between elastic contact part 1223 is acute angle, and when rear cover 12 is covered on motor body 11, side wall 1215 abuts horse Up to 11 inner wall of ontology, the hook on motor body 11 blocks rear cover 12, and the armature spindle in motor body 11 protrudes into limiting slot 1213 Interior and be located between two elastic contact parts 1223, two elastic contact parts 1223 and the armature spindle in motor body 11 are elastic Contact.

The working principle of the utility model micromotor are as follows: both threads cable, which is powered, transmits electric energy by contact flat spring 122 To the armature spindle of 11 upper end of motor body, drive motor ontology 11 is run, and the transmission shaft of 11 lower end of motor body drives the sun 24 rotation of wheel, sun gear 24 are engaged with multiple planetary gears 23, meanwhile, multiple planetary gears 23 and the gear teeth meshing in cabinet 21, too The 24 multiple planetary gears 23 of driving of sun wheel are rotated together along the gear teeth in cabinet 21, and multiple planetary gears 23 drive 22 turns of planet carrier Dynamic, 222 rotate driving operating mechanism of the rotary shaft operation of planet carrier 22 achievees the purpose that deceleration.

The micromotor performance parameter of the utility model is as follows, and 1 length of motor is 9.3 ± 0.2mm, and 21 length of cabinet is 4.6~4.8mm, motor 1 and 21 diameter of cabinet are 6 ± 0.05mm, and 222 diameter of rotary shaft is 2 ± 0.05mm, and side notch is deep 2.5 ± 0.05mm is spent, the distance of 222 lower surface of rotary shaft to cabinet 21 is 3.6 ± 0.05mm, and 2 transmission ratio of retarder is 145, The output revolving speed of retarder 2 is 2046rpm and its output torque is 6.4g-cm, and the voltage rating of entire motor is 3.0V (DC), is risen Dynamic voltage is less than 5V (DC), and no-load current is less than 54mA, maximum locked rotor current 230mA, and unloaded noise is less than 84dB, and (this is practical new The unloaded noise of type motor be probe be 10cm at a distance from retarder 2 and environmental noise is 31dB in the case that, tests and Out).

The micromotor advantageous effects of the utility model are: using planetary gear speed-reduction, while by retarder Cabinet is compact-sized as planetary gear gear ring, effectively reduces the volume of entire motor, and precision is higher, uses the longevity Life is longer, and conductive by two contact flat spring Elastic Contacts between armature spindle and cable, conductive effect is good, motor efficiency of transmission Height, output torque is big, and the micromotor transmission efficiency of the utility model can reach 98%.

Above disclosed is only the preferred embodiment of the utility model, and the right of the utility model cannot be limited with this Protection scope, therefore equivalent variations made according to the patent scope of the utility model still belong to the model that the utility model is covered It encloses.

Claims (10)

1. a kind of micromotor, including motor (1) and retarder (2), which is characterized in that the motor (1) passes through a connection ring (3) it is connect with the retarder (2), the retarder (2) has a cabinet (21), and the cavity side in the cabinet (21) is set There are multiple gear teeth, a planet carrier (22) passes through the cabinet (21) and extends to the cabinet (21) outside, multiple planetary gears (23) Across the planet carrier (22) upper end and with the gear teeth meshing in the cabinet (21), the row is protruded into a sun gear (24) one end It is simultaneously engaged with multiple planetary gears (23), the biography of sun gear (24) other end and the motor (1) carrier (22) upper end Moving axis connection；

The motor (1) drives sun gear (24) rotation, and the sun gear (24) drives multiple planetary gear (23) edges The gear teeth in the cabinet (21) rotate together, multiple planetary gears (23) drive planet carrier (22) rotation, in turn Drive operating mechanism's operation；

Motor (1) length is 9.3 ± 0.2mm, and cabinet (21) length is 4.6~4.8mm, the motor (1) and case Body (21) diameter is 6 ± 0.05mm, and retarder (2) transmission ratio is 145, and retarder (2) the output revolving speed is 2046rpm And its output torque is 6.4g-cm.

2. micromotor as described in claim 1, which is characterized in that the planet carrier (22) has a body part (221), institute The annular protrusion that body part (221) abut the cavity bottom is stated, the body part (221) has extended downwardly a rotary shaft (222)。

3. micromotor as claimed in claim 2, which is characterized in that set on multiple notches of body part (221) side There is the side mounting hole (2212) for accommodating and being clamped the corresponding planetary gear (23), is set on body part (221) upper surface There is the upper installing hole (2211) being connected to all side mounting holes (2212).

4. micromotor as claimed in claim 3, which is characterized in that sun gear (24) upper surface is equipped with one and is used for and institute The axis hole (242) of the transmission shaft cooperation of motor (1) is stated, sun gear (24) bottom is equipped with one raised (241), the protrusion (241) upper installing hole (2211) bottom is abutted.

5. micromotor as claimed in claim 2, which is characterized in that the rotary shaft (222) is equipped with the card slot of an annular (2221), a circlip (25) is sheathed on the card slot (2221), and the circlip (25) is located at the cabinet (21) outside and abuts Cabinet (21) bottom surface.

6. micromotor as described in claim 1, which is characterized in that the connection ring (3) passes through screw thread and the motor (1) It is fixedly connected and engages with the cabinet (21), be extended with a positioning column (31) on the connection ring (3), the positioning column (31) It extends in the motor (1).

7. micromotor as described in claim 1, which is characterized in that the motor (1) has a motor body (11), described Motor body (11) upper cover is equipped with a rear cover (12).

8. micromotor as claimed in claim 7, which is characterized in that the rear cover (12) has a shell (121), the shell Body (121) is equipped with two pairs of boss, and each pair of boss cooperation fixing has one to be used for and the motor body (11) armature spindle bullet Property contacts V-shaped contact flat spring (122), and two contact flat spring (122) opening directions are opposite.

9. micromotor as claimed in claim 8, which is characterized in that it is set on the shell (121) there are two through-hole (1214), Described two through-holes (1214) are located near two contact flat spring (122) fixing ends, and both threads cable is each passed through two institutes It states through-hole (1214) and is fixedly connected with corresponding contact flat spring (122).

10. micromotor as described in claim 1, which is characterized in that the sun gear (24) and the planetary gear (23) are equal It is integrally formed.