CN208226777U - Electric operator and continuous variable lift dynamical system - Google Patents

Abstract

The utility model is suitable for power systems art, disclose electric operator and continuous variable lift dynamical system, wherein, electric operator includes motor and executing agency, motor includes motor body, end cap, output shaft and first seal, executing agency includes shell and the worm gear in shell, one end of end cap is connect with motor body, the other end and cage connection, one end of output shaft is arranged in motor body, the other end passes through end cap and extends in shell, the end of output shaft stretched in shell is equipped with the worm screw with worm gear, the end back to motor body of end cap is equipped with the first cavity, first seal is installed in the first cavity, and first seal has the sealing surface for fitting closely output shaft lateral wall.Electric operator and continuous variable lift dynamical system provided by the utility model, structure is simple, compact, and high sealing reliability.

Description

Electric operator and continuous variable lift dynamical system

Technical field

The utility model relates to power systems art more particularly to a kind of Vehicular electric executing agency and have this electronic The continuous variable lift dynamical system of executing agency.

Background technique

As what automobile fuel ecomomy and exhaust emissions required greatly improves, it is electrical that conventional engines also start trend Change, wherein the introducing of continuous variable lift technology (cVVL) is exactly a good illustration.However, existing engine variable liter Journey technology in a particular application still generally existing unreasonable structural design, poor sealing effect the technical issues of, embody it is as follows:

1) output shaft of motor is directly protruding into the shell of executing agency, engine motor oil and its high-temperature oil mist directly with electricity The output shaft of machine contacts, thus the metallic particles for being easy to cause the machine oil of system and the abrasion of joint pair to generate enter motor bearings and Inside motor, in this way, being on the one hand easy to cause the failure of motor bearings；On the other hand due to machine oil be easy to along bearing clearance into Enter inside motor, seriously affects the reliability of motor.

2) it is sealed between electric machine casing and connector using turning, i.e. the turning at the turning of electric machine casing and connector Between sealing element is set, it is very high to the requirement of part in this way, and it is difficult to ensure that leakproofness.

Utility model content

First of the utility model is designed to provide a kind of electric operator, aims to solve the problem that existing electronic execution The technical issues of mechanism structure design unreasonable, poor sealing effect.

In order to achieve the above objectives, scheme provided by the utility model is: electric operator, including motor and execution machine Structure, the motor include motor body, end cap, output shaft and first seal, and the executing agency includes shell and is set to institute State the worm gear in shell, one end of the end cap connect with the motor body, the other end and the cage connection, the output One end of axis is arranged in the motor body, the other end passes through the end cap and is extended in the shell, the output shaft The end stretched in the shell be equipped with worm screw with the worm gear, the end back to the motor body of the end cap Portion is equipped with the first cavity, and the first seal is installed in first cavity, and the first seal has close patch Close the sealing surface of the output shaft lateral wall.

Optionally, the inner wall of first cavity includes the groove bottom wall of the relatively described axially vertical setting of output shaft and surround In the outer peripheral groove sidewall of the groove bottom wall, the first seal include outer sleeve body, interval be set to the housing it is intracorporal in Body and the plate body for being connected to described outer sleeve body one end Yu described interior set body one end, the lateral wall of the outer sleeve body and the slot side Wall fits closely, and the lateral wall of the inner sidewall of the interior set body and the output shaft is fitted close, and the plate body is connected to described Groove bottom wall.

Optionally, the lateral wall of the interior set body is equipped with annular groove, and the first seal further includes being set to the ring With the spring ring for the interior set body inner sidewall to be pressed in the output shaft lateral wall in connected in star；And/or

The cushion rubber that the outer sleeve body, the interior set body and the plate body are integrally formed；And/or

Metallic framework is also embedded in the outer sleeve body and the plate body；And/or

Side where the inner sidewall of the interior set body from the plate body is to move closer to the trend of the output shaft towards far from institute The direction inclination for stating motor body extends.

Optionally, the shell has inner cavity, mounting groove and an axis hole, the mounting groove be opened in the shell towards institute State on the outer wall of end cap, the axis hole is connected between the mounting groove and the inner cavity, the worm gear be set to it is described interior intracavitary, The end with the worm screw of the output shaft be arranged in out of described axis hole it is described interior intracavitary, the end cap back to described The end of motor body is equipped with boss with the mounting groove clamping matching, first cavity be opened in the boss back to On the end face of the motor body, the electric operator further includes being sealed in the outside the boss wall and the mounting groove Second seal between side wall；And/or

The end cap is connect with the motor body riveting, and the motor body and the end cap also pass through screw connection The shell.

Optionally, the motor body include one end connect with the end cap shell, be disposed in the housing stator, Be disposed in the housing and with the rotor of stator rotation cooperation, the connection that is installed between the shell and the end cap It device, the third sealing element being sealed between the connector and the end cap and is sealed between the connector and the shell The 4th sealing element, one end of the output shaft stretches in the shell and connect with the rotor.

Optionally, the connector include substrate, be convexly equipped in described substrate one end and be arranged in the end cap first It annular flange and is convexly equipped in the substrate other end and is arranged in intracorporal second annular flange of the shell, the third sealing element Between the first annular flange and the end cap, the 4th sealing element is set to second annular flange and the shell Between body.

Optionally, the shell includes for accommodating the main cylinder of the stator and the rotor, being used for and the end cap The annular mounting plate of connection, the connector drum being connected between described main cylinder one end and the annular mounting plate and it is convexly equipped in institute The bearing cavity of the main cylinder other end is stated, the radial dimension of the connector drum is greater than the radial dimension of the main cylinder, described One end of output shaft is supported in the bearing bore body by first bearing, and the intermediate position of the output shaft also passes through the second axis Hold and be supported in the end cap, the 4th sealing element be sealed in second annular flange lateral wall and the connector drum Inner sidewall between.

Optionally, the end towards the shell of the end cap is equipped with the with the first annular flange clamping matching Two cavitys, second cavity have the side chamber wall that is abutted with the lateral wall of the first annular flange and with it is described first annular The bottom cavity wall that the end face of flange abuts, the third sealing element be sealed in the first annular flange end face and the bottom cavity wall Between.

Optionally, it is additionally provided in the end cap between first cavity and second cavity and radial dimension is small In the radial dimension of bearing chamber of second cavity, the second bearing is set in the bearing bore room, the bearing chamber It is inside additionally provided with for the circlip to the second bearing axial limiting；And/or

The connector further includes the outer extension for being convexly equipped in the substrate side and stretching in outside the shell and the end cap Portion；And/or

The outer diameter of second annular flange is less than the outer diameter of the first annular flange；And/or

The third sealing element is O-ring seal；And/or

4th sealing element is O-ring seal.

Second of the utility model is designed to provide a kind of continuous variable lift dynamical system comprising above-mentioned electricity Dynamic executing agency and the lift adjustment mechanism being connect with the worm-drive.

Electric operator and continuous variable lift dynamical system provided by the embodiment of the utility model, by the machine of execution Worm gear is set in the shell of structure, is equipped with the snail with worm gear in the end of motor output shaft stretched in executing agency's shell Bar, in this way, may make the output shaft of motor to directly drive worm gear, to realize the rotary motion conversion of motor is straight Lift control.Meanwhile the utility model by, directly with the cage connection of executing agency, may make electricity for the end cap of motor in this way Mounting structure between machine and executing agency is fairly simple, and may make the overall structure of electric operator compact.This Outside, the utility model is arranged first in the first cavity by being equipped with the first cavity in the end back to motor body of end cap Sealing element fits closely the sealing surface of output shaft lateral wall in first seal setting, in this way, end cap and shell can kept to connect In the case where connecing size constancy, the axial dynamic sealing to output shaft is realized by first seal, to effectively prevent executing The metallic particles that machine oil and mechanical wear in mechanism shell generate enters inside motor bearings and motor along motor output shaft, The reliability of motor bearings and motor electric elements inside is fully ensured that.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.

Fig. 1 is the whole assembling schematic diagram one of electric operator provided by the embodiment of the utility model；

Fig. 2 is the whole assembling schematic diagram two of electric operator provided by the embodiment of the utility model；

Fig. 3 is the half-section diagram of electric operator provided by the embodiment of the utility model；

Fig. 4 is the partial enlargement diagram in Fig. 3 at A；

Fig. 5 is the partial enlargement diagram in Fig. 3 at B；

Fig. 6 is the rubber ring structure schematic diagram of first seal provided by the embodiment of the utility model；

Fig. 7 is the positive schematic diagram of end cap provided by the embodiment of the utility model；

Fig. 8 is the reversed schematic diagram of end cap provided by the embodiment of the utility model；

Fig. 9 is the structural schematic diagram of shell provided by the embodiment of the utility model；

Figure 10 is the positive schematic diagram of connector provided by the embodiment of the utility model；

Figure 11 is the reversed schematic diagram of connector provided by the embodiment of the utility model；

Figure 12 is the structural schematic diagram of shell provided by the embodiment of the utility model.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, fall within the protection scope of the utility model.

It should be noted that in the utility model embodiment institute it is directional instruction (such as upper and lower, left and right, it is preceding, It is only used for the relative positional relationship explained under a certain particular pose (as shown in the picture) between each component, movement feelings afterwards ...) Condition etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.

It should also be noted that, when an element is referred to as being " fixed " or " disposed " on another element, it can be straight Connect on the other element or may be simultaneously present centering elements.When an element is known as " connection " another element, It, which can be, is directly connected to another element or may be simultaneously present centering elements.

In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and cannot understand For its relative importance of indication or suggestion or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ", The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment Case can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution Conflicting or cannot achieve when occur will be understood that the combination of this technical solution is not present, also not in the requires of the utility model Protection scope within.

As shown in figs. 1-12, electric operator provided by the embodiment of the utility model, including motor 100 and executing agency 200, motor 100 includes motor body 110, end cap 120, output shaft 130 and first seal 140, and executing agency 200 includes outer Shell 210 and the worm gear 220 in shell 210, one end of end cap 120 connect with motor body 110, the other end and shell 210 Connection, one end of output shaft 130 is arranged in motor body 110, the other end passes through end cap 120 and is extended in shell 210, defeated The end of shaft 130 stretched in shell 210 is equipped with the worm screw 131 that cooperates with worm gear 220, end cap 120 back to motor body 110 end is equipped with the first cavity 121 (Fig. 7), and first seal 140 is installed in the first cavity 121, and first seal 140 have the sealing surface for fitting closely 130 lateral wall of output shaft.In the utility model embodiment, motor 100 passes through end cap 120 It is directly connect with the shell 210 of executing agency 200, mounting structure is simple, and overall structure is compact；Meanwhile this is practical New embodiment by the shell 210 of executing agency 200 be arranged worm gear 220, by 130 one end of output shaft of motor 100 from End cap 120 is pierced by outside motor 100, and is stretched in the shell 210 of executing agency 200, stretches in executing agency in output shaft 130 End in 200 shells 210 is equipped with the worm screw 131 cooperated with worm gear 220, in this way, may make the output shaft 130 of motor 100 straight Driving worm gear 220 is connect, straight lift control is converted into the rotary motion of motor 100 to realize.In addition, this is practical new Type embodiment is arranged by the end back to motor body 110 in end cap 120 for carrying out axial seal to output shaft 130 First seal 140, and the end back to motor body 110 of end cap 120 be equipped with for accommodating first seal 140 First cavity 121, in this way, shell 210 can be effectively prevent in the case where keeping end cap 120 and 210 size for connection of shell constant The metallic particles that interior machine oil and the abrasion of joint pair generate enters inside 100 bearing of motor and motor 100 along output shaft 130, The reliability of 100 electric elements inside of 100 bearing of motor and motor is fully ensured that.

Preferably, worm screw 131 and output shaft 130 are integrally formed, in this way, the subsequent of worm screw 131 and output shaft 130 can be saved Assembly, and ensure that the reliability that worm screw 131 connect with output shaft 130.It of courses, as the embodiment of substitution, can also incite somebody to action Worm screw 131 is set as seperated molding structure with output shaft 130, i.e., after worm screw 131 and output shaft 130 are individually manufactured, It reassembles together.

Preferably, referring to shown in Fig. 3, Fig. 4, Fig. 6 and Fig. 7, the inner wall of the first cavity 121 includes opposite 130 axis of output shaft To vertically disposed groove bottom wall and be surrounded on the outer peripheral groove sidewall of groove bottom wall, first seal 140 include outer sleeve body 141, Every the interior set body 142 being set in outer sleeve body 141 and the plate body 143 for being connected to 141 one end of outer sleeve body Yu 142 one end of interior set body, outside The lateral wall of body 141 and the groove sidewall of the first cavity 121 fit closely, the inner sidewall of interior set body 142 and output shaft 130 it is outer Side wall is fitted close, and plate body 143 is connected to groove bottom wall.The setting of interior set body 142 is mainly used for carrying out axial direction to output shaft 130 Sealing.141 lateral wall of outer sleeve body and groove sidewall fit closely, and end cap 120 on the one hand can be achieved to the diameter of first seal 140 To limit, the machine oil in shell 210 and the metallic particles of joint pair abrasion generation on the other hand can be prevented from first seal 140 Enter inside 100 bearing of motor and motor 100 at cooperation with end cap 120.The setting of plate body 143 is, it can be achieved that 142 He of interior set body The connection of outer sleeve body 141, and axial limiting and realization first to first seal 140 can be realized by the abutting of groove bottom wall Further sealing at sealing element 140 and 120 cooperation of end cap.

Preferably, referring to shown in Fig. 3, Fig. 4, Fig. 6 and Fig. 7, the lateral wall of interior set body 142 is equipped with annular groove 1421, the One sealing element 140 further includes being set in annular groove 1421 for 142 inner sidewall of interior set body to be pressed in 130 outside of output shaft The spring ring 144 of wall.The inner sidewall of interior set body 142 can be pressed in output shaft 130 by its elastic deformation power by spring ring 144 Lateral wall, in this way, having fully ensured that first seal 140 to the reliability of the axial dynamic sealing of output shaft 130；Meanwhile spring ring 144 elastically deformable performance is unlikely to make first seal 140 and output shaft 130 are excessively difficult to assemble again.

Preferably, the inner sidewall of interior set body 142 moves closer to the trend of output shaft 130 from 143 place side of plate body towards remote Direction from motor body 110, which tilts, to be extended, i.e. the inner hole of interior set body 142 is in horn-like, and the biggish one end in aperture is located at and leans on The side of nearly motor body 110, the lesser one end in aperture are located at close to the side of executing agency 200, in this way, being both conducive to guarantee the One sealing element 140 is effectively kept out 200 inner engine oil of executing agency, and may make first seal 140 on output shaft 130 It assembles more convenient, can also reduce the friction between first seal 140 and output shaft 130.

Specifically, outer sleeve body 141, interior set body 142 and plate body 143 are all ring structure.

Preferably, the cushion rubber that outer sleeve body 141, interior set body 142 and plate body 143 are integrally formed, in this way, outer sleeve body can be saved 141, the subsequent assembly of interior set body 142 and plate body 143, and ensure that outer sleeve body 141, interior set body 142 and plate body 143 connect can By property.The cushion rubber that outer sleeve body 141, interior set body 142 and plate body 143 are integrally formed, it is preferred to use high temperature resistant oil resistant rubber is made, It is conducive to guarantee the service life of first seal 140 and the long-term reliability of sealing in this way.

Preferably, it is also embedded with metallic framework (not shown) in outer sleeve body 141 and plate body 143, in this way, being conducive to guarantee first The rigidity of sealing element 140.

Preferably, referring to shown in Fig. 2, Fig. 7, Fig. 8, Fig. 9 and Figure 12,111 riveting of shell of end cap 120 and motor body 110 Pressure connection, specifically, shell 111 is equipped with several riveting connection sheets 1116, and riveting connection sheet 1116 embraces the riveting of end cap 120 Protruding portion 127 is to fix end cap 120 and 111 phase of shell.Motor body 110 and end cap 120 can also be fixed by screw 400 It is connected to shell 210.Specifically, shell 111 is equipped with several screw perforatings 1115 for being used to wear for screw 400, end Lid 120 is equipped with several the first connecting holes 125 for being used to wear for screw 400, and shell 210 is used for equipped with several and spiral shell Silk 400 connection the second connecting holes 214, screw perforating 1115, each first connecting hole 125 all respectively with each second connecting hole 214 contraposition settings.In specific installation, first end cap 120 is fixed on the shell 111 of motor body 110 by riveting, then Screw 400 is passed through into shell 111 and end cap 120 is fixed on shell 210.Preferably, end cap 120 is made of aluminum, shell 111 by Iron or Stainless Steel are made.

Preferably, referring to shown in Fig. 2, Fig. 3, Fig. 4, Fig. 7 and Figure 12, shell 210 has the inner cavity 211, (figure of mounting groove 212 4, Figure 12) and axis hole 213 (Figure 12), mounting groove 212 be opened on the outer wall towards end cap 120 of shell 210, axis hole 213 connect It passes through between mounting groove 212 and inner cavity 211, worm gear 220 is set in inner cavity 211, the end with worm screw 131 of output shaft 130 Enter in inner cavity 211 across axis hole 213, the end back to motor body 110 of end cap 120 is equipped with matches with 212 detent of mounting groove The boss 122 (Fig. 4) of conjunction, the first cavity 121 be opened in boss 122 back on the end face of motor body 110, electronic execution machine Structure further includes the second seal 300 being sealed between 212 inner sidewall of 122 lateral wall of boss and mounting groove.Herein, pass through boss 122, with the cooperation of mounting groove 212, can further improve the compact overall structure of electric operator, and be conducive to improve end cap 120 reliabilities being connect with shell 210.The setting of second seal 300 is mainly used for matching for end cover 120 and shell 210 Gap is closed, external substance can be effectively prevent to enter in shell 210 from the fit clearance of end cap 120 and shell 210, and can prevent Machine oil in shell 210 leaks from end cap 120 and the fit clearance of shell 210.

Preferably, referring to shown in Fig. 3, Fig. 4 and Fig. 7, the lateral wall of boss 122 is equipped with first annular card slot 126 (Fig. 7), The insertion of second seal 300 is installed in first annular card slot 126, easy for installation, and positioning is reliable.

Preferably, second seal 300 is O-ring seal, and structure is simple, at low cost, easy for installation, and can meet end Seal Design requirement between lid 120 and shell 210.

Preferably, referring to Fig.1 shown in -5, motor body 110 include one end connect with end cap 120 shell 111, set on shell Stator 118 in body 111, is installed on shell 111 and end at the rotor 119 being rotatably assorted in shell 111 and with stator 118 Connector 112 between lid 120, the third sealing element 113 being sealed between connector 112 and end cap 120 and it is sealed in connection The 4th sealing element 114 between device 112 and shell 111, one end of output shaft 130 stretch in shell 111 and connect with rotor 119 It connects.The setting of connector 112 is mainly used for installing the electrical fittings such as plug, harness, to realize 100 winding of motor, circuit board Deng the electric connection with external electrical connector.Riveting connection sheet 1116 and screw perforating 1115 are all set on shell 111.

Preferably, referring to shown in Fig. 3, Fig. 5, Figure 10 and Figure 11, connector 112 includes substrate 1121, is convexly equipped in substrate 1121 one end are simultaneously arranged in the first annular flange 1122 in end cap 120 and are convexly equipped in 1121 other end of substrate and are arranged in shell The second annular flange 1123 in 111, third sealing element 113 are set between the end face 1122 and end cap 120 of first annular flange, 4th sealing element 114 is set between 111 interior sidewall surface of outer side surface and shell of the second annular flange 1123.Herein, the first ring The setting of shape flange 1122 and the second annular flange 1123 is not only conducive to improve the structural compactness of motor 100, but also is conducive to the company of raising The reliability that device 112 is connect with end cap 120, shell 111 is connect, while can also be convenient for third sealing element 113 and the 4th sealing element 114 Setting.

Preferably, the outer diameter of the second annular flange 1123 is less than the outer diameter of first annular flange 1122.It of courses, specifically answers In, the outer diameter of the second annular flange 1123 can also be designed larger than or equal to first annular flange 1122 outer diameter.

Preferably, referring to shown in Fig. 2, Fig. 3, Figure 10 and Figure 11, connector 112 further includes being convexly equipped in 1121 side of substrate simultaneously Stretch in the outer extensions 1124 outside shell 111 and end cap 120.Outer extensions 1124 can be used for installs connector terminal thereon, For being electrically connected with external power supply.

Preferably, referring to shown in Fig. 3, Fig. 5 and Fig. 9, shell 111 includes the main cylinder for housing stator 118 and rotor 119 Body 1111, is connected to 1111 one end of main cylinder and annular mounting plate 1112 at the annular mounting plate 1112 for connecting with end cap 120 Between connector drum 1113 and be convexly equipped in the bearing cavity 1114 of 1111 other end of main cylinder, the radial ruler of connector drum 1113 One end of the very little radial dimension greater than main cylinder 1111, output shaft 130 is supported in bearing cavity 1114 by first bearing 115 Interior, the intermediate position of output shaft 130 also passes through second bearing 116 and is supported in end cap 120,114 company of being sealed in of the 4th sealing element It connects between the lateral wall of the second annular flange 1123 of device 112 and the inner sidewall of connector drum 1113.Herein, output shaft 130 is logical It crosses the first bearing 115 for being located at 118 two sides of stator and second bearing 116 and realizes and be rotatably connected with shell 111, this Sample improves the reliability and running stability of motor 100 conducive to the stress of dispersion output shaft 130.Meanwhile this preferred implementation Scheme is radial dimension of greater than main cylinder 1111 by the way that radial dimension is arranged between main cylinder 1111 and annular mounting plate 1112 Connector drum 1113, and the 4th sealing element 114 for being used for hermetically sealed connector 112 and shell 111 is set to the second annular flange Between 1123 lateral wall and the inner sidewall of connector drum 1113, the inner sidewall of connector drum 1113 has uniform internal diameter, this Sample, can be by outer diameter multistageization of shell 111, to be conducive to the turning in the prior art between connector 112 and shell 111 is close Envelope mode is changed to circumferential seal mode, and then dramatically improves the reliability of sealing, and reduces 118 iron core mistake of stator Be full of assembly when generate iron filings risk.

Preferably, referring to shown in Fig. 3, Fig. 5 and Figure 10, the lateral wall of the second annular flange 1123 is equipped with the second annular slot 1125, the insertion of the 4th sealing element 114 is installed in the second annular slot 1125, and easy for installation, positioning is reliable.

Preferably, the 4th sealing element 114 is O-ring seal, and structure is simple, at low cost, easy for installation, and can meet company Connect the Seal Design requirement between device 112 and shell 111.

Preferably, main cylinder 1111, annular mounting plate 1112, connector drum 1113 and bearing cavity 1114 are integrally formed, In this way, the subsequent assembly of main cylinder 1111, annular mounting plate 1112, connector drum 1113 and bearing cavity 1114 can be saved, and It ensure that the reliability that main cylinder 1111, annular mounting plate 1112, connector drum 1113 and bearing cavity 1114 connect.Certainly , in concrete application, as the embodiment of substitution, main cylinder 1111, annular mounting plate 1112, connector drum 1113 and bearing At least one of cavity 1114 separately fabricated can also be attached again assembly after the completion.

Preferably, referring to shown in Fig. 3, Fig. 5 and Fig. 8, the end towards shell 111 of end cap 120 be equipped with it is first annular Second cavity 123 of 1122 clamping matching of flange, the second cavity 123, which has, to abut with the lateral wall of first annular flange 1122 Side chamber wall and the bottom cavity wall abutted with the end face of first annular flange 1122, third sealing element 113 are sealed in first annular flange Between 1122 end face and the bottom cavity wall of the second cavity 123.Herein, pass through first annular flange 1122 and the second cavity 123 Cooperation can further improve the compact overall structure of electric operator, and is conducive to raising end cap 120 and connect with shell 210 Reliability.Third sealing element 113 uses end face seal design method, in this way, can avoid the first annular insertion of flange 1122, pulling out Out when the second cavity 123, third sealing element 113 is worn the case where damaging, and uses the longevity conducive to guarantee third sealing element 113 Life.

Preferably, referring to shown in Fig. 3, Fig. 5 and Figure 11, the end face of first annular flange 1122 is equipped with third annular slot 1126, the insertion of third sealing element 113 is installed in third annular slot 1126, and easy for installation, positioning is reliable.

Preferably, third sealing element 113 is O-ring seal, and structure is simple, at low cost, easy for installation, and can meet company Connect the Seal Design requirement between device 112 and end cap 120.

Preferably, referring to shown in Fig. 3 and Fig. 4, be additionally provided in end cap 120 positioned at the first cavity 121 and the second cavity 123 it Between and radial dimension less than the radial dimension of bearing chamber 124 of the second cavity 123, second bearing 116 is set to bearing chamber 124 It is interior, it is additionally provided in bearing chamber 124 for the circlip 117 to 116 axial limiting of second bearing.Herein, second bearing 116 uses 117 fixed design of circlip, avoid the prior art using mechanical riveting it is fixed as the variation of end face plane degree and caused by leakage And quality problem.

Further, the utility model embodiment additionally provides continuous variable lift dynamical system comprising above-mentioned electricity Dynamic executing agency and the lift adjustment mechanism being sequentially connected with worm gear 220.Continuous variable lift dynamical system provided in this embodiment System, due to using above-mentioned electric operator, therefore, have sealing effect good, the advantages of high reliablity.

The utility model embodiment is isolated by will be sealed inside executing agency 200 and motor 100, is thus prevented The metallic particles of lubricating oil and the abrasion of joint pair in executing agency 200 enters inside motor 100, ensure that in motor 100 Hall circuit board and winding etc. are run under safe and reliable environment, dramatically improve the reliability and use of product Service life.

It should be noted that above-mentioned electric operator is applicable not only to continuous variable lift dynamical system, it can also be wide It is general applied in other systems directly contacted with executing agency 200 machine oil there are 100 output shaft 130 of motor.

The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model, Under all utility models in the utility model are conceived, equivalent structure made based on the specification and figures of the utility model Transformation, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.

Claims (10)

1. electric operator, which is characterized in that including motor and executing agency, the motor includes motor body, end cap, defeated Shaft and first seal, the executing agency include shell and the worm gear in the shell, one end of the end cap with The motor body connection, the other end and the cage connection, one end of the output shaft are arranged in the motor body, are another One end passes through and the end cap and extends in the shell, the end of the output shaft stretched in the shell be equipped with it is described The worm screw of worm gear, the end back to the motor body of the end cap are equipped with the first cavity, the first seal peace Loaded in first cavity, and the first seal has the sealing surface for fitting closely the output shaft lateral wall.

2. electric operator as described in claim 1, which is characterized in that the inner wall of first cavity includes relatively described The groove bottom wall of the axially vertical setting of output shaft and it is surrounded on the outer peripheral groove sidewall of the groove bottom wall, the first seal includes Outer sleeve body, interval are set to the intracorporal interior set body of the housing and are connected to the plate of described outer sleeve body one end Yu described interior set body one end Body, the lateral wall of the outer sleeve body are fitted closely with the groove sidewall, and the inner sidewall of the interior set body is outer with the output shaft Side wall is fitted close, and the plate body is connected to the groove bottom wall.

3. electric operator as claimed in claim 2, which is characterized in that it is recessed that the lateral wall of the interior set body is equipped with annular Slot, the first seal further include being set in the annular groove with described defeated for the interior set body inner sidewall to be pressed in The spring ring of shaft lateral wall；And/or

The cushion rubber that the outer sleeve body, the interior set body and the plate body are integrally formed；And/or

Metallic framework is also embedded in the outer sleeve body and the plate body；And/or

Side where the inner sidewall of the interior set body from the plate body is to move closer to the trend of the output shaft towards far from the electricity The direction of owner's body, which tilts, to be extended.

4. electric operator as described in claim 1, which is characterized in that the shell has inner cavity, mounting groove and axis hole, The mounting groove is opened on the outer wall towards the end cap of the shell, the axis hole be connected to the mounting groove with it is described Between inner cavity, the worm gear be set to it is described interior intracavitary, the end with the worm screw of the output shaft is worn out of described axis hole Set on described interior intracavitary, the end back to the motor body of the end cap is equipped with convex with the mounting groove clamping matching Platform, first cavity be opened in the boss back on the end face of the motor body, the electric operator also wraps Include the second seal being sealed between the outside the boss wall and the mounting groove inner sidewall；And/or

The end cap is connect with the motor body riveting, and the motor body and the end cap also pass through described in screw connection Shell.

5. such as the described in any item electric operators of Claims 1-4, which is characterized in that the motor body includes one end The shell that connect with the end cap, the stator being disposed in the housing are disposed in the housing and cooperate with the stator rotation Rotor, be installed between the shell and the end cap connector, be sealed between the connector and the end cap Third sealing element and the 4th sealing element being sealed between the connector and the shell, one end of the output shaft stretch in institute It states in shell and is connect with the rotor.

6. electric operator as claimed in claim 5, which is characterized in that the connector include substrate, be convexly equipped in it is described Substrate one end is simultaneously arranged in the first annular flange in the end cap and is convexly equipped in the substrate other end and is arranged in the shell Intracorporal second annular flange, the third sealing element are set between the first annular flange and the end cap, and the described 4th Sealing element is set between second annular flange and the shell.

7. electric operator as claimed in claim 6, which is characterized in that the shell include for accommodate the stator with The main cylinder of the rotor, the annular mounting plate for connecting with the end cap are connected to described main cylinder one end and the ring Connector drum between shape mounting plate and the bearing cavity for being convexly equipped in the main cylinder other end, the radial ruler of the connector drum One end of the very little radial dimension greater than the main cylinder, the output shaft is supported in the bearing bore body by first bearing, The intermediate position of the output shaft also passes through second bearing and is supported in the end cap, and the 4th sealing element is sealed in described Between the lateral wall of second ring flange and the inner sidewall of the connector drum.

8. electric operator as claimed in claim 7, which is characterized in that the end towards the shell of the end cap is set Have the second cavity with the first annular flange clamping matching, second cavity have with except the first annular flange The side chamber wall and the bottom cavity wall abutted with the end face of the first annular flange, the third sealing element that side wall abuts are sealed in institute It states between the end face of first annular flange and the bottom cavity wall.

9. electric operator as claimed in claim 8, which is characterized in that be additionally provided in the end cap recessed positioned at described first Between chamber and second cavity and radial dimension is less than the radial dimension of bearing chamber of second cavity, the second bearing In the bearing bore room, it is additionally provided in the bearing bore room for the circlip to the second bearing axial limiting；And/ Or,

The connector further includes the outer extensions for being convexly equipped in the substrate side and stretching in outside the shell and the end cap； And/or

The outer diameter of second annular flange is less than the outer diameter of the first annular flange；And/or

The third sealing element is O-ring seal；And/or

4th sealing element is O-ring seal.

10. continuous variable lift dynamical system, which is characterized in that including electronic execution as described in any one of claim 1 to 9 Mechanism and the lift adjustment mechanism being connect with the worm-drive.