CN111895061A - Speed reduction module of electric telescopic mechanism - Google Patents

Speed reduction module of electric telescopic mechanism Download PDF

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Publication number
CN111895061A
CN111895061A CN202010929386.XA CN202010929386A CN111895061A CN 111895061 A CN111895061 A CN 111895061A CN 202010929386 A CN202010929386 A CN 202010929386A CN 111895061 A CN111895061 A CN 111895061A
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CN
China
Prior art keywords
bearing
shaft body
shell
fixed shell
speed reduction
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Pending
Application number
CN202010929386.XA
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Chinese (zh)
Inventor
张毅
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Huizhou Jinli Intelligent Technology Co Ltd
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Huizhou Jinli Intelligent Technology Co Ltd
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Publication date
Application filed by Huizhou Jinli Intelligent Technology Co Ltd filed Critical Huizhou Jinli Intelligent Technology Co Ltd
Priority to CN202010929386.XA priority Critical patent/CN111895061A/en
Publication of CN111895061A publication Critical patent/CN111895061A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
    • F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/02—Casings or enclosures characterised by the material thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2031—Actuator casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2084—Perpendicular arrangement of drive motor to screw axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/209—Arrangements for driving the actuator using worm gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • F16H2025/2436—Intermediate screw supports for reducing unsupported length of screw shaft

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

The invention relates to the technical field of electric telescopic mechanisms, and particularly discloses a speed reduction module of an electric telescopic mechanism, which comprises a fixed shell, a motor arranged outside the fixed shell, and a speed reduction unit arranged in the fixed shell; the protection shell is sleeved on the outer side of the motor and the outer side of the fixed shell; the speed reduction unit comprises a first speed reduction wheel, a second speed reduction wheel, a shaft body part, a first bearing and an elastic ring, the shaft body part is rotatably arranged with the fixed shell through the first bearing, the elastic ring is sleeved outside the first bearing, and the elastic ring is clamped between the first bearing and the fixed shell; the motor drives the second reduction gear to rotate through the first reduction gear; when the electric vehicle is actually used, the protective shell is used for protecting the fixed shell, the speed reduction unit and the motor and preventing the fixed shell, the speed reduction unit and the motor from being damaged by external collision; the elastic ring enables the first bearing to be stably installed in the fixed shell, and the elastic ring absorbs rotation impact between the shaft piece and the fixed shell, so that the speed reduction module can run stably.

Description

Speed reduction module of electric telescopic mechanism
Technical Field
The invention relates to the technical field of electric telescopic mechanisms, and particularly discloses a speed reducing module of an electric telescopic mechanism.
Background
Smart home has been the daily life article of more and more families frequently used, the kind of smart home is various, for example, electric table, electronic cabinet, electronic sofa etc. all are intelligent house products commonly used, in order to realize electric table, electronic cabinet, the automatic operation of electronic sofa, electric table, electronic cabinet, electronic sofa mostly disposes electronic telescopic machanism, each electronic telescopic machanism all needs to dispose reduction gears, among the prior art reduction gears of electronic telescopic machanism construct the design unreasonable, reduction gears receives external collision easily and damages on the one hand, on the other hand reduction gears's operation vibrations are very big, lead to electronic telescopic machanism operation unstable.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the speed reducing module of the electric telescopic mechanism, wherein a protective shell is used for protecting a fixed shell, a speed reducing unit and a motor and preventing the fixed shell, the speed reducing unit and the motor from being damaged by external collision; the elastic ring enables the first bearing to be stably installed in the fixed shell, and the elastic ring absorbs rotation impact between the shaft piece and the fixed shell, so that the speed reduction module can run stably.
In order to achieve the above object, the speed reduction module of the electric telescopic mechanism of the present invention comprises a fixed shell, a motor disposed outside the fixed shell, and a speed reduction unit disposed in the fixed shell, wherein the motor is used for driving the speed reduction unit to operate; the protective shell is sleeved on the outer side of the motor and the outer side of the fixed shell, and the strength of the protective shell is greater than that of the fixed shell; the speed reduction unit comprises a first speed reduction wheel, a second speed reduction wheel, a shaft body piece, a first bearing and an elastic ring, the first bearing is sleeved on the outer side of the shaft body piece and arranged in the fixed shell, the shaft body piece is rotatably arranged with the fixed shell through the first bearing, the elastic ring is sleeved on the outer side of the first bearing, and the elastic ring is clamped between the first bearing and the fixed shell; the second speed reduction wheel is arranged on the shaft part and meshed with the first speed reduction wheel, and the motor is used for driving the first speed reduction wheel to rotate.
The first reduction gear is a worm, the second reduction gear is a worm wheel, and the unfolding spiral angle of the worm is smaller than the contact friction angle of the worm wheel and the worm; the worm and the output shaft of the motor are of an integrated structure, the fixed shell is provided with a reinforcing plate, and one end, far away from the main body of the motor, of the worm is rotatably arranged on the reinforcing plate.
Wherein, the set casing includes first casing and can dismantle the second casing of being connected with first casing, and first casing has the benchmark flat board, and motor demountable installation is dull and stereotyped on the benchmark, and the motor has the benchmark plane that is used for conflicting the benchmark flat board, and the reinforcing plate can be dismantled and set up on the second casing, and the reinforcing plate is located between set casing and the protecting crust.
The nut sliding block is slidably accommodated in the first non-circular hole, and an inner hole surface of the first non-circular hole is used for blocking and abutting against the outer side surface of the nut sliding block; the shaft piece is provided with a screw rod part, and the nut sliding block is sleeved on the outer side of the screw rod part in a threaded manner; the first shell and the second shell are surrounded to form a second non-circular hole, the main cylinder is inserted into the second non-circular hole, and the inner hole surface of the second non-circular hole is used for blocking and abutting against the main cylinder.
The main cylinder part is provided with two clamping grooves which are respectively concavely arranged at two sides of the main cylinder part far away from each other; the first shell and the second shell are respectively provided with two clamping convex ribs protruding into the second non-circular hole, the two clamping convex ribs of the first shell and the clamping convex ribs of the second shell respectively protrude into the two clamping grooves, and the clamping convex ribs of the first shell and the clamping convex ribs of the second shell are respectively inserted into the clamping grooves from two ends of the same clamping groove.
The screw rod part is connected with the first shaft body, the second shaft body is connected with the first shaft body, the outer diameter of the screw rod part is larger than that of the first shaft body, and the outer diameter of the first shaft body is larger than that of the second shaft body; the second bearing is sleeved outside the first shaft body, and the end face of the screw rod part close to the first shaft body is used for blocking and abutting against the second bearing; the first bearing is sleeved outside the second shaft body, and the end face of the first shaft body, which is close to the second shaft body, is used for stopping and abutting against the second bearing; the second reduction gear is clamped between the first bearing and the second bearing.
The cross section of the first shaft body is non-circular, the second speed reducing wheel is provided with a third non-circular hole used for accommodating the first shaft body, and the inner hole surface of the third non-circular hole is used for blocking and abutting against the outer side surface of the first shaft body; two annular retainer rings are arranged in the fixed shell and are positioned between the first bearing and the second bearing, and two ends, far away from each other, of the two annular retainer rings respectively stop and abut against one ends, close to each other, of the first bearing and the second bearing.
The outer side of the first shaft is sleeved with an inserting sleeve, a third non-circular hole is formed in the inserting sleeve, the inserting sleeve is provided with an outer convex rib, the second speed reducing wheel is provided with an inner clamping groove, the inserting sleeve and the second speed reducing wheel are arranged in an inserting mode, the inner clamping groove is used for accommodating the outer convex rib, and the inner side face of the inner clamping groove is used for stopping and abutting against the outer convex rib.
The bearing assembly further comprises a fixing nut, the fixing nut is in threaded connection with one end, far away from the first shaft body, of the second shaft body, the first bearing is located between the fixing nut and the second bearing, and the fixing nut is used for abutting against one end, far away from the second bearing, of the first bearing.
The fixing head is provided with a fixing disc and a rib plate arranged on the fixing disc, the fixing disc is clamped between the first shell and the second shell and is used for abutting against one end, far away from the second bearing, of the first bearing, and the fixing disc is provided with a yielding blind groove used for accommodating a fixing nut; the ribbed slab is arranged outside the fixed shell, the ribbed slab is provided with a wear-resistant sleeve, and an external component is rotatably arranged in the wear-resistant sleeve.
The invention has the beneficial effects that: when the electric vehicle is actually used, the protective shell is used for protecting the fixed shell, the speed reduction unit and the motor and preventing the fixed shell, the speed reduction unit and the motor from being damaged by external collision; the elastic ring enables the first bearing to be stably installed in the fixed shell, and the elastic ring absorbs rotation impact between the shaft piece and the fixed shell, so that the speed reduction module can run stably.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is an exploded view of another aspect of the present invention;
fig. 4 is a schematic perspective view of a second reduction gear and a plug bush according to the present invention.
The reference numerals include:
1-fixed shell 2-motor 3-protective shell
4-first speed reducing wheel 5-second speed reducing wheel 6-shaft body part
7-first bearing 8-elastic ring 9-reinforcing plate
11-first housing 12-second housing 13-reference plate
14-main barrel 15-nut slider 16-first non-circular hole
17-screw rod part 18-second non-circular hole 19-clamping groove
21-holding convex rib 22-second bearing 23-first shaft body
24-second shaft 25-third non-circular hole 26-plug sleeve
27-outer convex rib 28-inner clamping groove 29-fixing head
31-ribbed plate 32-wear-resistant sleeve 61-fixing nut.
Detailed Description
For the understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
Referring to fig. 1 to 4, the speed reduction module of an electric telescopic mechanism of the present invention includes a fixed housing 1, a motor 2 installed on an outer side of the fixed housing 1, and a speed reduction unit installed in the fixed housing 1, wherein the motor 2 is used for driving the speed reduction unit to operate.
Still include protecting crust 3, the outside of motor 2 and the outside of set casing 1 are established to the protecting crust 3 cover, and the inboard face of protecting crust 3 pastes and establishes on the lateral surface of set casing 1 and the lateral surface of motor 2, overlaps with the help of protecting crust 3 firmly fixed casing 1 and motor 2 cover together. The strength of protective housing 3 is greater than the strength of stationary housing 1, for example, stationary housing 1 is made of plastic, protective housing 3 is made of metal material, and protective housing 3 can be made of copper alloy or stainless steel, preferably, protective housing 3 is made of aluminum alloy, and with the help of the heat conduction characteristic of aluminum alloy, quick heat dissipation to motor 2 is realized. The cost of the aluminum alloy is lower than that of the copper alloy, and the manufacturing cost of the protective shell 3 is reduced in an auxiliary mode.
The speed reduction unit comprises a first speed reduction wheel 4, a second speed reduction wheel 5, a shaft body part 6, a first bearing 7 and an elastic ring 8, wherein the first bearing 7 is sleeved on the outer side of the shaft body part 6 and is arranged in the fixed shell 1, the shaft body part 6 is rotatably arranged with the fixed shell 1 through the first bearing 7, the elastic ring 8 is sleeved on the outer side of the first bearing 7, and the elastic ring 8 is clamped between the first bearing 7 and the fixed shell 1; the second reduction gear 5 is arranged on the shaft body part 6 and meshed with the first reduction gear 4, and the motor 2 is used for driving the first reduction gear 4 to rotate. According to actual needs, the elastic ring 8 can be made of soft rubber, and preferably, the elastic ring 8 is made of silica gel.
According to actual needs, an annular blind groove can be formed in the first bearing 7 in a concave mode from the outer side face of the outer ring of the first bearing 7, and the annular blind groove is arranged around the central axis of the first bearing 7. The elastic ring 8 is attached to the outer side of the outer ring of the first bearing 7, the elastic ring 8 is provided with annular convex ribs, the annular convex ribs extend into the annular blind groove, the annular blind groove is located in the middle of the first bearing 7, and the elastic ring 8 is prevented from falling off from the first bearing 7 by stopping and abutting the annular convex ribs through inner groove surfaces of two sides, which are far away from each other, of the annular blind groove.
In actual use, the protective shell 3 is used for protecting the fixed shell 1, the speed reducing unit and the motor 2 and preventing the fixed shell, the speed reducing unit and the motor from being damaged by external collision; the elastic ring 8 enables the first bearing 7 to be stably installed in the fixed shell 1, and the elastic ring 8 absorbs the rotation impact between the shaft element 6 and the fixed shell 1, so that the speed reduction module can stably run.
The first reduction gear 4 is a worm, the second reduction gear 5 is a worm wheel, and the expansion spiral angle of the worm is smaller than the contact friction angle of the worm wheel and the worm; by means of self-locking of the worm and the worm wheel, only the worm can drive the worm wheel to rotate actively, but the worm cannot be driven by the worm wheel to rotate passively, and therefore the electric telescopic mechanism is stably positioned in an extending state or a retracting state.
The worm and the output shaft of the motor 2 are in an integrated structure, and the integrated structure of the worm and the output shaft saves the assembling time required by assembling the worm and the output shaft, and ensures the transmission stability of the worm and the output shaft. The fixed shell 1 is detachably provided with the reinforcing plate 9, one end of the worm, which is far away from the main body of the motor 2, is rotatably arranged on the reinforcing plate 9, and through the arrangement of the reinforcing plate 9, the abrasion between the fixed shell 1 and the worm is reduced, and the service life is prolonged; meanwhile, the problem that the transmission is poor due to the fact that one end of the worm, which is far away from the motor 2, is suspended is avoided, and the stability of the transmission of the worm and the worm wheel is ensured. Preferably, the reinforcing plate 9 is made of copper alloy or stainless steel.
The fixed shell 1 comprises a first shell 11 and a second shell 12 detachably connected with the first shell 11, the first shell 11 is provided with a reference flat plate 13, the motor 2 is detachably installed on the reference flat plate 13, and the motor 2 is provided with a reference plane for abutting against the reference flat plate 13. Through the cooperation setting of reference flat 13 and reference plane, ensure that motor 2 installs required position on stationary housing 1 fast, accurately, promote motor 2's installation effectiveness and installation yield.
Reinforcing plate 9 detachably installs and sets up on second casing 12, and reinforcing plate 9 is located between set casing 1 and protecting crust 3, avoids reinforcing plate 9 to be located set casing 1 and occupy installation space, protects reinforcing plate 9 with the help of protecting crust 3 simultaneously, avoids reinforcing plate 9 to receive external collision and damage.
The nut barrel further comprises a main barrel part 14 and a nut sliding block 15, the main barrel part 14 is provided with a first non-circular hole 16, the nut sliding block 15 is accommodated in the first non-circular hole 16 in a sliding mode, the shape of the nut sliding block 15 is matched with that of the first non-circular hole 16, and the inner hole surface of the first non-circular hole 16 is used for stopping and abutting against the outer side surface of the nut sliding block 15. In this embodiment, the first non-circular hole 16 is rectangular, and the inner hole surface of the first non-circular hole 16 is used to stop and abut against the nut slider 15, so as to prevent the nut slider 15 from rotating relative to the main cylinder 14 and being badly used.
The shaft piece 6 is provided with a screw rod part 17, and the nut sliding block 15 is sleeved on the outer side of the screw rod part 17 in a threaded manner; the first shell 11 and the second shell 12 are surrounded to form a second non-circular hole 18, the shape of the second non-circular hole 18 is matched with the shape of the main cylinder 14, the main cylinder 14 is inserted into the second non-circular hole 18, and the inner hole surface of the second non-circular hole 18 is used for blocking and abutting against the main cylinder 14, so that the main cylinder 14 is prevented from rotating relative to the fixed shell 1.
The main cylinder 14 is provided with two clamping grooves 19, and the two clamping grooves 19 are respectively concavely arranged on the left side and the right side of the main cylinder 14 away from each other; the first casing 11 and the second casing 12 both have two retaining ribs 21 protruding into the second non-circular hole 18, the two retaining ribs 21 of the first casing 11 and the retaining ribs 21 of the second casing 12 respectively protrude into the two retaining grooves 19, and the retaining ribs 21 of the first casing 11 and the retaining ribs 21 of the second casing 12 are respectively inserted into the retaining grooves 19 from two ends of the same retaining groove 19.
In practical use, the main cylinder 14 is inserted into the fixed housing 1, and after the two are inserted into each other, the inner side surface of the holding groove 19 is used to stop and abut against the outer side surface of the holding rib 21, so as to prevent the main cylinder 14 from withdrawing from the second non-circular hole 18 of the fixed housing 1, and ensure that the two are stably mounted together. Compared with the main cylinder part 14 and the fixed shell 1 which are fixed together through screws, the mounting structure is simplified, and the mounting efficiency and the dismounting efficiency of the main cylinder part 14 and the fixed shell 1 are improved.
The shaft body part 6 further comprises a first shaft body 23 connected with the screw rod part 17 and a second shaft body 24 connected with the first shaft body 23, the outer diameter of the screw rod part 17 is larger than that of the first shaft body 23, the outer diameter of the first shaft body 23 is larger than that of the second shaft body 24, the screw rod part 17, the first shaft body 23 and the second shaft body 24 are designed in an integrated structure, and the screw rod part 17, the first shaft body 23 and the second shaft body 24 are arranged in a collinear mode.
The second bearing 22 is sleeved on the outer side of the first shaft body 23, and the end surface of the screw rod portion 17 close to the first shaft body 23 is used for stopping and abutting against the second bearing 22, so that the second bearing 22 is ensured to be quickly and accurately installed on the shaft body member 6. The first bearing 7 is sleeved on the outer side of the second shaft body 24, and the end face of the first shaft body 23 close to the second shaft body 24 is used for stopping and abutting against the second bearing 22, so that the first bearing 7 is ensured to be quickly and accurately arranged at a required position on the shaft body part 6; the second reduction gear 5 is clamped between the first bearing 7 and the second bearing 22, and is blocked and abutted against the second reduction gear 5 by virtue of the two bearings, so that the second reduction gear 5 is prevented from moving back and forth along the axial direction of the shaft body 6 to avoid poor transmission.
The cross section of the first shaft body 23 is non-circular, the second reduction gear 5 has a third non-circular hole 25 for accommodating the first shaft body 23, the shape of the third non-circular hole 25 is matched with the cross section of the first shaft body 23, and an inner hole surface of the third non-circular hole 25 is used for blocking and abutting against the outer side surface of the first shaft body 23. The inner hole surface of the third noncircular hole 25 is blocked and abutted against the outer side surface of the first shaft body 23, so that the first shaft body 23 and the second speed reducing wheel 5 are prevented from rotating relatively.
Two annular retainer rings are arranged in the fixed shell 1 and are positioned between the first bearing 7 and the second bearing 22, and two ends, far away from each other, of the two annular retainer rings respectively stop and abut against one ends, close to each other, of the first bearing 7 and the second bearing 22. The two bearings are blocked and abutted by the two annular retaining rings, the second reducing gear 5 is prevented from being clamped and damaged due to the fact that the two bearings are excessively close to each other, and meanwhile, the rolling bearing is ensured to be rapidly and accurately installed at a required position in the fixed shell 1.
The first shaft body 23 is sleeved with an insertion sleeve 26, the insertion sleeve 26 is substantially in a hollow tubular shape, the third non-circular hole 25 is formed in the insertion sleeve 26, and the third non-circular hole 25 penetrates through the insertion sleeve 26 along the central axial direction of the insertion sleeve 26. The outer side of the inserting sleeve 26 is provided with an outer convex rib 27, the second speed reducing wheel 5 is provided with an inner clamping groove 28, the inserting sleeve 26 and the second speed reducing wheel 5 are arranged in an inserting mode, the inner clamping groove 28 is used for accommodating the outer convex rib 27, and the inner side face of the inner clamping groove 28 is used for stopping and abutting against the outer convex rib 27.
During actual assembly, the plug bush 26 is firstly sleeved on the outer side of the first shaft body 23 of the shaft body member 6, then the second speed reducing wheel 5 is sleeved on the outer side of the plug bush 26, the outer convex rib 27 extends into the inner clamping groove 28, and the inner side surface of the inner clamping groove 28 is used for stopping and abutting against the outer side surface of the outer convex rib 27, so that the second speed reducing wheel 5 and the plug bush 26 are prevented from rotating relatively and being badly used, and the stable synchronous rotation of the second speed reducing wheel and the plug bush is ensured.
Preferably, the number of the outward protruding ribs 27 is multiple, the multiple outward protruding ribs 27 are in an annular array around the central axis of the plug bush 26, the number of the inner clamping grooves 28 is multiple, the multiple inner clamping grooves 28 are in an annular array around the central axis of the second reduction gear 5, the outward protruding ribs 27 and the inner clamping grooves 28 are in one-to-one correspondence, and the multiple outward protruding ribs 27 are respectively inserted into the multiple inner clamping grooves 28.
The bearing support further comprises a fixing nut 61, the fixing nut 61 is screwed on one end, far away from the first shaft body 23, of the second shaft body 24, the first bearing 7 is located between the fixing nut 61 and the second bearing 22, and the fixing nut 61 is used for abutting against one end, far away from the second bearing 22, of the first bearing 7.
During actual assembly, the second bearing 22 is firstly sleeved on the outer side of the first shaft body 23, the inserting sleeve 26 is sleeved on the outer side of the first shaft body 23, the second speed reducing wheel 5 and the inserting sleeve 26 are assembled together in an inserting manner, the first bearing 7 is sleeved on the outer side of the second shaft body 24, the shaft body 6, the first bearing 7, the second speed reducing wheel 5, the inserting sleeve 26 and the second bearing 22 are encapsulated by the fixing shell 1, the fixing nut 61 is screwed on the free end of the second shaft body 24, the fixing nut 61 is screwed, the first bearing 7, the second speed reducing wheel 5 (the inserting sleeve 26) and the second bearing 22 are stably fixed on the fixing shell 1 along the axial direction of the shaft body 6 by the fixing nut 61, the shaft body 6 is prevented from moving relative to the fixing shell 1 and poor use is avoided, and the use stability of the speed reducing module is ensured.
Still include fixed head 29, fixed head 29 has the fixed disk and sets up ribbed slab 31 on the fixed disk, and the fixed disk centre gripping is between first casing 11 and second casing 12, and the fixed disk is used for contradicting the one end that second bearing 22 was kept away from to first bearing 7, and the fixed disk has the blind groove of stepping down that is used for holding establishing fixation nut 61. Through the arrangement of the fixing head 29, the speed reduction module is convenient to be fixedly installed with an external component, and the installation efficiency of the speed reduction module is improved.
The ribbed plate 31 is positioned outside the fixed shell 1, the ribbed plate 31 is provided with a wear-resistant sleeve 32, and external components are rotatably arranged in the wear-resistant sleeve 32. In the installation process of the speed reducing module, an external component is directly and rotatably arranged in the wear-resistant sleeve 32, so that the abrasion between the rib plate 31 and the component is reduced, and the service life is prolonged. Preferably, the wear sleeve 32 is made of a copper alloy or stainless steel. In this embodiment, the number of the ribs 31 is two, and the two ribs 31 are spaced apart from each other and arranged in parallel.
The outer side of the wear-resistant sleeve 32 is provided with a convex rib which extends along the central axis of the wear-resistant sleeve 32, and the convex rib is formed by protruding from the outer side surface of the wear-resistant sleeve 32 towards the direction far away from the central axis of the wear-resistant sleeve 32. The rib plate 31 has rib grooves for accommodating the protruding ribs, and the inner groove surfaces of the rib grooves stop the protruding ribs, so that the wear-resistant sleeve 32 is prevented from rotating relative to the rib plate 31.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims (10)

1. A speed reduction module of an electric telescopic mechanism comprises a fixed shell, a motor arranged outside the fixed shell and a speed reduction unit arranged in the fixed shell, wherein the motor is used for driving the speed reduction unit to operate; the method is characterized in that: the protection shell is sleeved on the outer side of the motor and the outer side of the fixed shell; the speed reduction unit comprises a first speed reduction wheel, a second speed reduction wheel, a shaft body piece, a first bearing and an elastic ring, the first bearing is sleeved on the outer side of the shaft body piece and arranged in the fixed shell, the shaft body piece is rotatably arranged with the fixed shell through the first bearing, the elastic ring is sleeved on the outer side of the first bearing, and the elastic ring is clamped between the first bearing and the fixed shell; the second speed reduction wheel is arranged on the shaft part and meshed with the first speed reduction wheel, and the motor is used for driving the first speed reduction wheel to rotate.
2. The deceleration module of electric telescopic mechanism according to claim 1, characterized in that: the first reduction gear is a worm, the second reduction gear is a worm wheel, and the unfolding spiral angle of the worm is smaller than the contact friction angle of the worm wheel and the worm; the worm and the output shaft of the motor are of an integrated structure, the fixed shell is provided with a reinforcing plate, and one end, far away from the main body of the motor, of the worm is rotatably arranged on the reinforcing plate.
3. The deceleration module of electric telescopic mechanism according to claim 2, characterized in that: the set casing includes first casing and can dismantle the second casing of being connected with first casing, and first casing has the benchmark flat board, and motor demountable installation is dull and stereotyped at the benchmark, and the motor has the benchmark plane that is used for conflicting the benchmark flat board, and the reinforcing plate can be dismantled and set up on the second casing, and the reinforcing plate is located between set casing and the protecting crust.
4. The deceleration module of electric telescopic mechanism according to claim 3, characterized in that: the main cylinder part is provided with a first non-round hole, the nut sliding block is slidably accommodated in the first non-round hole, and the inner hole surface of the first non-round hole is used for blocking and abutting against the outer side surface of the nut sliding block; the shaft piece is provided with a screw rod part, and the nut sliding block is sleeved on the outer side of the screw rod part in a threaded manner; the first shell and the second shell are surrounded to form a second non-circular hole, the main cylinder is inserted into the second non-circular hole, and the inner hole surface of the second non-circular hole is used for blocking and abutting against the main cylinder.
5. The deceleration module of electric telescopic mechanism according to claim 4, characterized in that: the main cylinder part is provided with two clamping grooves which are respectively concavely arranged at two sides of the main cylinder part far away from each other; the first shell and the second shell are respectively provided with two clamping convex ribs protruding into the second non-circular hole, the two clamping convex ribs of the first shell and the two clamping convex ribs of the second shell respectively protrude into the two clamping grooves, and the clamping convex ribs of the first shell and the clamping convex ribs of the second shell are respectively inserted into the clamping grooves from two ends of the same clamping groove.
6. The deceleration module of electric telescopic mechanism according to claim 4, characterized in that: the screw rod part is connected with the first shaft body, the second shaft body is connected with the first shaft body, the outer diameter of the screw rod part is larger than that of the first shaft body, and the outer diameter of the first shaft body is larger than that of the second shaft body; the second bearing is sleeved outside the first shaft body, and the end face of the screw rod part close to the first shaft body is used for blocking and abutting against the second bearing; the first bearing is sleeved outside the second shaft body, and the end face of the first shaft body, which is close to the second shaft body, is used for stopping and abutting against the second bearing; the second reduction gear is clamped between the first bearing and the second bearing.
7. The deceleration module of electric telescopic mechanism according to claim 6, characterized in that: the cross section of the first shaft body is non-circular, the second speed reducing wheel is provided with a third non-circular hole used for accommodating the first shaft body, and the inner hole surface of the third non-circular hole is used for blocking and abutting against the outer side surface of the first shaft body; two annular retainer rings are arranged in the fixed shell and are positioned between the first bearing and the second bearing, and two ends, far away from each other, of the two annular retainer rings respectively stop and abut against one ends, close to each other, of the first bearing and the second bearing.
8. The deceleration module of electric telescopic mechanism according to claim 7, characterized in that: the outer side of the first shaft is sleeved with an inserting sleeve, a third non-circular hole is formed in the inserting sleeve, the inserting sleeve is provided with an outer convex rib, the second speed reducing wheel is provided with an inner clamping groove, the inserting sleeve and the second speed reducing wheel are arranged in an inserting mode, the inner clamping groove is used for containing the outer convex rib, and the inner side face of the inner clamping groove is used for blocking the outer convex rib which is in conflict with the inner convex rib.
9. The deceleration module of electric telescopic mechanism according to claim 7, characterized in that: still include fixation nut, the fixation nut spiro union is kept away from one end of first axis body at the second axis body, and first bearing is located between fixation nut and the second bearing, and fixation nut is used for conflicting the one end that the second bearing was kept away from to first bearing.
10. The deceleration module of electric telescopic mechanism according to claim 9, characterized in that: the fixing head is provided with a fixing disc and a rib plate arranged on the fixing disc, the fixing disc is clamped between the first shell and the second shell and is used for abutting against one end, far away from the second bearing, of the first bearing, and the fixing disc is provided with a yielding blind groove used for accommodating a fixing nut; the ribbed slab is arranged outside the fixed shell, the ribbed slab is provided with a wear-resistant sleeve, and an external component is rotatably arranged in the wear-resistant sleeve.
CN202010929386.XA 2020-09-07 2020-09-07 Speed reduction module of electric telescopic mechanism Pending CN111895061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010929386.XA CN111895061A (en) 2020-09-07 2020-09-07 Speed reduction module of electric telescopic mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010929386.XA CN111895061A (en) 2020-09-07 2020-09-07 Speed reduction module of electric telescopic mechanism

Publications (1)

Publication Number Publication Date
CN111895061A true CN111895061A (en) 2020-11-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010929386.XA Pending CN111895061A (en) 2020-09-07 2020-09-07 Speed reduction module of electric telescopic mechanism

Country Status (1)

Country Link
CN (1) CN111895061A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000039051A (en) * 1998-07-22 2000-02-08 Tokico Ltd Linear actuator
DE202016106011U1 (en) * 2016-08-12 2016-11-07 Timotion Technology Co., Ltd. Modular actuator
DE102019116529A1 (en) * 2018-07-06 2020-01-09 Timotion Technology Co., Ltd. LINEAR DRIVE WITH BUFFER MECHANISM
CN210518002U (en) * 2019-11-11 2020-05-12 钱福生 Electric push rod
CN212389718U (en) * 2020-09-07 2021-01-22 惠州市金力智能科技有限公司 Speed reduction module of electric telescopic mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000039051A (en) * 1998-07-22 2000-02-08 Tokico Ltd Linear actuator
DE202016106011U1 (en) * 2016-08-12 2016-11-07 Timotion Technology Co., Ltd. Modular actuator
DE102019116529A1 (en) * 2018-07-06 2020-01-09 Timotion Technology Co., Ltd. LINEAR DRIVE WITH BUFFER MECHANISM
CN210518002U (en) * 2019-11-11 2020-05-12 钱福生 Electric push rod
CN212389718U (en) * 2020-09-07 2021-01-22 惠州市金力智能科技有限公司 Speed reduction module of electric telescopic mechanism

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