CN102088222A

CN102088222A - Linear actuator assembling mechanism with self-locking function

Info

Publication number: CN102088222A
Application number: CN200910249923XA
Authority: CN
Inventors: 江新安; 陈东星; 林泰宏; 曾士原; 曾国恩
Original assignee: Hiwin Mikrosystem Corp
Current assignee: Hiwin Mikrosystem Corp
Priority date: 2009-12-04
Filing date: 2009-12-04
Publication date: 2011-06-08
Anticipated expiration: 2029-12-04
Also published as: CN102088222B

Abstract

The invention provides a actuator assembling mechanism with a self-locking function, which is a driving mechanism that is used for assembling and fixing a linear actuator, wherein the driving mechanism accommodates and positions the actuator by using a gear box formed by splicing two halves of box sheets, an integrated single rear fixing base supports a bearing which is pivoted to one end of a threaded rod in the driving mechanism, and is clamped and fixed in the gear box to bear the stress from the thread rod so as to prolong the service life of the actuator; furthermore, the faying surface of the rear fixing base and the gear box forms a regular polygon so as to conveniently adjust the fixing angle of the rear fixing base; in addition, the driving mechanism, one part of the gear box and one part of the rear fixing base are accommodated in a hollow housing formed by splicing two half housings, and the faying surface of the two spliced half housings is parallel to the axial direction of an output shaft of a motor of the driving mechanism so that the housing is simple and convenient during faying works such as ultrasonic welding, and the like.

Description

The linear actuators winding mechanism of tool auto-lock function

Technical field

The present invention relates to linear actuators, a kind of linear actuators winding mechanism of tool auto-lock function particularly is provided.

Background technology

At first, see also shown in Figure 1, the motion of linear actuators, it is the outputting power that makes a motor 10, a worm screw 11 and a worm gear 12 via the bridle joint that is perpendicular to one another, make a screw rod 13 rotation starts and transmit, thereby make swivel nut in the axial displacement on this screw rod 13 of the swivel nut 14 on this screw rod 13, in order to promote one with the interior pipe 15 of these swivel nut 14 coaxial butts, thereby with the linear thrust that produced via managing 15 in this, outwards do the flowing mode transmission with flexible, and by a rotation that is attached to self-locking spring 16 these screw rods 13 of control on the worm gear 12.

And for the above-mentioned transmission mechanism of winding suitably, in US7066041 United States Patent (USP) and EP1322876 European patent, the exposure actuator group as shown in Figures 2 and 3 structure 20 of meeting sb. at the airport is arranged, it is with single general tooth case 21 in a tubular form each component sets of above-mentioned transmission mechanism to be adorned thereon, and the back holder of on the end end of bar axle one end of screw rod 13, forming 22 with two-piece type, fix this screw rod 13 at the required bearing 17 of rotation, this screw rod 13 is located in the axial direction, and by one by two halves shell 23 up and down, further respectively this tooth case 21 and back holder 22 give winding to 24 shells that constituted.

On take off known technology contents and imperfect, it structurally has at least three disappearances: one, back holder 22 more is provided as the whole and affixed bond sites of external module of linear actuators, only, the known back holder of forming with two-piece type 22 has deficiency on the intensity that meets with stresses, the situation that the assembly of easily deriving damages influences useful life of product; The two, the technology contents that constitutes shell with two

halves shell

23,24 belongs to the common technology contents of general housing admittedly, precisely because make two

halves shell

23,24 faying face to each other perpendicular to the axial composition mode of motor 10, for making in the processing inconvenience is arranged then, operating space during except that assembling is limited to, on the procedure that carries out with this two halves shell of ultrasonic waves welding, center of gravity problem in the time of also will putting, make two

halves shell

23,24 only be difficult to keep amplexiforming closely to each other by gravity, and have influence on after the welding in conjunction with stability; The three, this known techniques be with extra clamp 25 in conjunction with outer tube 18 and tooth case 21, textural comparatively complicated and be unfavorable for simplifying fabrication schedule and reduce manufacturing cost.

Summary of the invention

Main purpose of the present invention promptly is the described problem that solves prior art, a kind of linear actuators winding mechanism of tool auto-lock function is provided, the intensity of combined structure between that it can improve linear actuators and external module, guarantee the useful life of actuator, and make this winding mechanism when carrying out ultrasonic waves welding shell, only need utilize gravity promptly to get to make between half shell connects airtight each other, and, make and need not to see through extra fixation kit between outer tube and tooth case and combine, to reduce the quantity of constituent components, reduce cost and simplify procedures.

Edge is, for reaching above-mentioned purpose, the actuator group of the tool auto-lock function provided by the present invention structure of meeting sb. at the airport is that its concrete technology contents then is: include in order to the transmission mechanism of assembling fixed linear actuator:

One tooth case, have an outward appearance and generally be the casing of column, be affixed perpendicular to mode and this motor of the motor force-output shaft of this transmission mechanism with axis of a cylinder, form and dock each other by two half chests sheets, and the faying face that this half chests sheet is respectively docked each other is parallel to formed casing axis of a cylinder direction, one in conjunction with the chamber, be from the past interior extension in the end face axial ground of this casing axis of a cylinder one end, one orientation room then be from this casing axis of a cylinder in addition the end face of end extend axially desired depth toward in, and to make the inboard locular wall of this orientation room be to be regular polygon on the section configuration of edge perpendicular to this casing axis of a cylinder direction;

One back holder, the single component that is formed in one, seat body with a reservation shape, be to embed in this orientation room with an end, one is the location anchor ring of regular polygon, be positioned on all sides side of this body one end, and amplexiform in opposite directions with the inboard locular wall of this orientation room, and the limit number that makes this location anchor ring regular polygon is equal to the limit number of this orientation room's regular polygon, one spindle socket, be to be arranged with on this body is embedded in end face in this orientation room, the bearing that is coupling in order to the screw rod rod end that is installed with this transmission mechanism;

One shell, for docking the hollow housing that forms each other by 2 half shells, in order to hold this transmission mechanism and respectively one one of this tooth case and back holder in wherein, and the faying face that this half shell is respectively docked each other to be parallel to the force-output shaft of this transmission mechanism motor axial;

One outer tube has predetermined length, is to embed this in conjunction with in the chamber with major axis one end;

One interlocking portion is outstanding card body and the hole clipping with interlocking complimentary to one another, be divided into this in conjunction with inboard locular wall of chamber and with corresponding outer tube body on, in order to be connected and fixed this outer tube and this casing.

The linear actuators winding mechanism of tool auto-lock function provided by the invention, dock the tooth case that forms with one each other by two half chests sheets, hold the also transmission mechanism of positional actuator, and with integrated single back holder, hold and establish the bearing that is articulated in screw rod one end in this transmission mechanism, and be fixed in this tooth case with being inserted and put, bear stress according to this from this screw rod, to prolong the useful life of actuator, and further make the faying face between this back holder and this tooth case be regular polygon, and must be convenient to adjust the fixed angle of this back holder, in addition, and dock the hollow shell that forms each other by 2 half shells with one, will be respectively this transmission mechanism and respectively this tooth case and one one of the holder in back are contained in wherein, and the faying face that this half shell is respectively docked each other to be parallel to the force-output shaft of this transmission mechanism motor axial, thereby it is more easy that this shell is able to when carrying out as ultrasonic waves welding etc. in conjunction with operation.

Below by accompanying drawing the present invention is elaborated.

Description of drawings

Fig. 1 is the three-dimensional exploded view of linear actuators transmission mechanism.

Fig. 2 is a stereo appearance figure of commonly using linear actuators winding mechanism.

Fig. 3 is a three-dimensional exploded view of commonly using a linear actuators group machine mechanism part.

Fig. 4 is the three-dimensional combination figure of a preferred embodiment of the present invention.

Fig. 5 is the three-dimensional exploded view of a preferred embodiment of the present invention.

Fig. 6 is the cutaway view of a preferred embodiment of the present invention along Fig. 4 a-a direction.

Fig. 7 is the cutaway view of a preferred embodiment of the present invention along Fig. 4 b-b direction.

Embodiment

See also Fig. 4 to shown in Figure 7, the linear actuators winding mechanism 30 that the tool auto-lock function is provided in a preferred embodiment of the present invention mainly is by a tooth case 31, a back holder 32, a shell 33, an

outer tube

34 and 35 makers-ups of an interlocking portion, wherein:

This tooth case 31 has the casing 311 that an outward appearance generally is column, be to dock each other by two

half chests sheets

3111,3112 to form, and make the butt joint faying face of this

half chests sheet

3111,3112 respectively be parallel to the axis of a cylinder direction of institute's formation casing 311, one is to be positioned on the end face of this casing 311 axiss of a cylinder one end in conjunction with chamber 312, the extension proper depth sets to the concave, 313 of one orientation room are positioned on the end in addition of these casing 311 axiss of a cylinder, and the extension proper depth that sets to the concave, and make the inboard ring wall of this orientation room 313 on section, be octagon perpendicular to these casing 311 axis of a cylinder directions.

32 of this back holders are the single components that is formed in one, seat body 321 with a suitable shape, be to embed in this orientation room 313 with an end, the one location anchor ring 322 that is octagon is to be located on all sides of the end side of this body 321, and amplexiform in opposite directions with the locular wall of this orientation room 313, one spindle socket 323 is arranged with on the end face of an end of this body 321, and be connected with the space of this orientation room 313, two auricles 324 are to be located parallel on the end in addition of this body 321, one 325 of perforation provide on this auricle 324 respectively, hole axle and perpendicular to the center of curvature line stretcher of this location anchor ring 322.

This shell 33 is one to dock the hollow housing of be combined into each other by 2 half shells 331,332, in order to the motor 10 that holds the linear actuators transmission mechanism and this casing 311 in its inside, and the faying face that this half shell 331,332 is respectively docked each other to be parallel to the force-output shaft of this motor 10 axial.

This outer tube 34 is a known techniques, has suitable length, and is embedded in this in conjunction with in the chamber 312 with major axis one end.

35 in this interlocking portion has the cylindric outstanding card body 351 of two couple complimentary to one another and two pairs of circular hole hole clippings 352, and each vertically is based on these two relative positions in conjunction with chamber 312 inboard locular walls to card body 351, respectively this hole clipping 352 then is arranged with on the body of this outer tube 34 major axis one end, so that make this outer tube 34 affixed each other with this casing 311 by the interlocking each other of this card body 351 and hole clipping 352 respectively.

The linear actuators winding mechanism 30 of this tool auto-lock function is in order to winding such as actuator transmission mechanism that Fig. 1 took off, the mode of its winding, be identical on means with the aforementioned located by prior art revealer of institute, that is be to be fixedly arranged on motor 10 with this tooth case 31 to exert oneself on the axial end, to hold and to locate worm screw and the worm gear 11 that is vertical bridle joint each other, 12, and make the screw rod 13 that wears combination each other in coaxial, swivel nut 14 and interior pipe 15 are located in this outer tube 34, and an end bar axle of this screw rod 13 is also stretched the space that places this orientation room 313, and be coupling with the bearing 17 that is embedded in this spindle socket 323, and this back holder 32 is embedded in an end of this orientation room 313 and be subjected to this two

half chests sheet

3111,3112 clamp and located, and and then with this shell 33 above-mentioned respectively this member is coated.

And the composition by above-mentioned member, the linear actuators winding mechanism 30 of this tool auto-lock function is compared to the winding mechanism of commonly using, and it is to have following effect to promote:

One, because this back holder 32 is for via the single component that is made of one piece, therefore, it is that the preferable intensity of tool is to meet with stresses, avoid as the located by prior art when the different assemblies of textural reason combine weakness on the existing structure, to guarantee and to prolong the useful life of linear actuators.

They are two years old, octagon by 313 of respectively this location anchor ring 322 and orientation room amplexiforms structure, can change the state that amplexiforms between the two in response to user's demand, and then adjust the angle of the hole axle of this perforation 325 with respect to these worm screw 11 bar axles, to be suitable for the linear actuators installation requirements of different angles.

Its three, be to make the linear actuators winding mechanism 30 of this tool auto-lock function be able to reach the fixedly effect of outer tube 34 by this interlocking portion 35 than located by prior art constituent components quantity still less.

They are four years old, though this shell 33 also is by 2 half shells 331,332 dock and form, only different with located by prior art is, this 2 half shell 331,332 each other butt joint in conjunction with end face be parallel to the force-output shaft of ccontaining motor 10 axial, but not as vertical corresponding as the located by prior art, these constructional differences, being the linear actuators winding mechanism 30 that can make this tool auto-lock function is especially carrying out with ultrasonic waves welding this half shell 331 respectively, 332 o'clock, the linear actuators winding mechanism 30 of tool auto-lock function must be positioned on the plane reposefully, and this half shell 331 respectively, 332 also be parallel to this plane in conjunction with the plane, thus, in the ultrasonic waves welding procedure, be can be only can keep respectively between this half shell 331 by the effect of gravity, 332 adaptations that amplexiform are to guarantee the quality of welding.

Claims

1. the linear actuators winding mechanism of a tool auto-lock function is in order to the transmission mechanism of assembling fixed linear actuator, it is characterized in that, includes:

2. the linear actuators winding mechanism of tool auto-lock function as claimed in claim 1 is characterized in that, this orientation room and this location anchor ring all are to be octagon.

3. the linear actuators winding mechanism of the described tool auto-lock function of claim 1 is characterized in that, this card body is to be cylindric and to be stretched on this locular wall in conjunction with the chamber, and this hole clipping is then rounded and be arranged with on the tube wall of the outside of this outer tube.