CN103174809A

CN103174809A - Actuator

Info

Publication number: CN103174809A
Application number: CN2011104358549A
Authority: CN
Inventors: 曾国恩; 胡锦芳; 陈冠辰
Original assignee: Hiwin Mikrosystem Corp
Current assignee: Hiwin Mikrosystem Corp; Hiwin Technologies Corp
Priority date: 2011-12-22
Filing date: 2011-12-22
Publication date: 2013-06-26

Abstract

The invention provides an actuator which comprises an outer tube, an inner tube, a threaded sleeve, a threaded rod, a motor, a connecting piece, a support ring sheet and at least one clamp body. One end of the inner tube is coaxially inserted into the outer tube and is arranged in the outer tube in a sliding mode. The threaded sleeve is arranged in the outer tube in a sliding mode and abuts against the end face of one end of the inner tube. The threaded rod is connected with the threaded sleeve in a threaded mode, and one end of the threaded rod is inserted into the inner tube. The motor drives the threaded rod to rotate through a force output shaft. The connecting piece is provided with an annular body portion, and the annular face of the outer side of the annular body portion is connected and fixed on the tube wall of the inner side of the outer tube in an attaching mode. The support ring sheet is coaxially arranged on the annular face of the inner side of the body portion in a protruding mode and is coaxially sleeved on the other end of the threaded rod in a penetrating mode. The clamp body extends outwards from one of the body portion in the axial direction and is clamped and embedded in one end of the motor. The actuator is used for locating the motor through the connecting piece so as to ensure that the force output shaft of the motor can not synchronously rotate along with a driving object when the force output shaft of the motor applies force to drive other components through rotation. Consequently, the actuator is stable in structure, durable, and wide in application range.

Description

Actuator

Technical field

The present invention relates to a kind of technology that axially reciprocating is provided, particularly about a kind of actuator.

Background technique

in the electromechanical integration technical field, changing electric energy is the actuation techniques that is widely used for mechanical energy provides the actuator of power, because linear actuators has lightweight, close structure, easy to operate, install simple and easy, low noise, the price of high rigidity and material benefit, and be applied to as automation equipment generally, automatic ifting sickbed, in the many different products of massage chair etc., power output accurately is provided and then reaches and significantly improve the human lives, and promote accuracy etc. the effect of manufacturing automation, all this kind, all aobvious examples that science and technology exists for the mankind.

The application of actuator, except above-mentioned concrete purposes, usually be used as the automobile of main traffic instrument in general daily life, the unlatching of its tail-gate is with closed, traditional atmospheric pressure rod no doubt can provide the user labour-saving tail-gate keying operation, non-facility still just, be with, then disclosed just like German 102008062400A1 bulletin case, with the keying power source of actuation applications as automobile tail gate, and the automobile tail gate that user's automation further is provided opens and closes operation, so that the user to be provided better use effect.

with regard to technology contents as disclosed in above-mentioned D.B.P., its structure is not attained ideal yet, particularly it is in order to avoid driven unit to produce in the running the structure of improper rotation, mainly to be tight with on an end of driven unit by a fastener assembly, the immobilization efficiencies phase by close-fitting is to overcome the improper rotation of driven unit, these close-fitting technology contents no doubt can reach the effect of the improper rotation of restriction driven unit in theory, just to be positioned on automobile tail gate because it is applied, and the place that automobile travels not is that smooth highway is only arranged, hole, hole on highway, crankcase ventilaton and other irregular road surface, all can cause the middle vehicle that travels to produce the situation of significantly beating, therefore, the disclosed only technology contents by the driven unit that is tightly fixed of case before above-mentioned patent, namely have because using and with the passing of time produce the feelings row that gets loose, cause actuator when motion, because driven unit is synchronously rotating with the target that drives, can't carry out smoothly and produce the disappearance that tail-gate opens and closes, these technical deficiencies are aobvious in addition improved necessity.

Summary of the invention

The purpose of this invention is to provide a kind of actuator, it passes through a connection piece, be provided as the use of the motor location of power source, guarantee that according to this force-output shaft of motor is when driving other member with the rotation application of force, can not produce with driving the synchronous situation of rotating of target, and can provide actuator structure firm and durable concrete effect, make the application area of actuator more extensive.

For achieving the above object, the present invention takes following technological scheme:

So actuator provided by the present invention comprises an outer tube; One inner tube is slidedly arranged in this outer tube with coaxial the stretching into of end; One swivel nut is slidedly arranged in this outer tube, and is connected on an end end face of this inner tube; One screw rod is spirally connected with this swivel nut, and an end also stretches in this inner tube; One motor, drive this bolt rotary with force-output shaft, more include a connection piece, have a ring-type body section, amplexiform on the inboard tube wall that is fixed in outer tube the side ring surface in addition, one supports ring plate, on the coaxial interior side ring surface that is based in this body section, and wear at least one card with the another end of this screw rod is coaxial, from the past extension of this axial end of body section, and be embedded on an end of this motor.

The magnitude setting of described card is a pair of, is divided into to apart 180 degree angles in described body section.

Described link more includes two bearings, is divided into coaxially with each other described support ring plate both sides, and be connected in series with the another end of described screw rod and in addition the side ring surface be connected on the interior side ring surface of described body section.

Described link more includes a tubulose coupling, coaxially is serially connected with described screw rod another end and described motor is exerted oneself between axle head.

The invention has the beneficial effects as follows: the present invention passes through a connection piece, be provided as the use of the motor location of power source, guarantee that according to this force-output shaft of motor is when driving other member with the rotation application of force, can not produce with driving the synchronous situation of rotating of target, and can provide actuator structure firm and durable concrete effect, make the application area of actuator more extensive.

Description of drawings

Fig. 1 is the three-dimensional combination figure of a preferred embodiment of the present invention.

Fig. 2 is the three-dimensional exploded view of a preferred embodiment of the present invention.

Fig. 3 is the stereogram of the link assembly in a preferred embodiment of the present invention.

Fig. 4 is that a preferred embodiment of the present invention is along the sectional view of the 4-4 secant of Fig. 1.

Fig. 5 is that a preferred embodiment of the present invention is along the sectional view of the 5-5 secant of Fig. 1.

Embodiment

Below, namely lift with a preferred embodiment of the present invention, and coordinate graphic being described further, see also Fig. 1-5, the actuator 10 that provides in a preferred embodiment of the present invention includes an outer tube 20, an inner tube 30, a motor 40, a screw rod 50, a swivel nut 60 and a connection piece 70, wherein:

This outer tube 20 is used depending on for other constituent components as the pedestal of this actuator 10.

This inner tube 30 is arranged in this outer tube 20 from an end of this outer tube 20 is coaxial with an axial end, and can be in this outer tube 20 shift reciprocately axially, make the axial another end of this inner tube 30 can away from or near this outer tube 20, reach according to this and drive a joint 80 that is fixed in these inner tube 30 axial another ends and can carry out the reciprocal action of stretching.

This motor 40 is column, and is located in coaxially in the another end pore of this outer tube 20, and makes its force-output shaft 41 be positioned at the inside of this outer tube 20.

This screw rod 50 is the Ai Kemu screw rod, is arranged in coaxially in this outer tube 20, and makes an end and the end of this force-output shaft 41 last coaxial adjacent.

This swivel nut 60 is the Ai Kemu nut, and spiral shell is located on this screw rod 50, and with on the coaxial annular end face that is connected to these inner tube 30 1 ends of the ring-type of all sides shoulder face 61.

this link 70 limits the rotation of this motor 40 in this outer tube 20 in order to provide, supporting and location to this screw rod 50 is provided simultaneously, and be major technique of the present invention, particularly, this link 70 has a ring-type body section 71, amplexiform on the inboard tube wall that is fixed in this outer tube 20 with all side ring surfaces, the position is also close with an end of this motor force-output shaft 41 and this screw rod 50, one supports on the interior side ring surface that ring plate 72 is stretched on this body section 71 in coaxial, and on a coaxial end that is set in this screw rod 50, a pair of arc-shaped flaky card 73 be mutually symmetrical and ground, degree angle, interval 1 respectively from this body section 71 adjacent to an end of this motor 40 toward extension, and with these motor 40 phase inlay cards, one tubulose coupling 74 is coaxial is serially connected with 41 of these screw rod 50 another ends and this motor force-output shafts, and the shape that is non-circular pore by this coupling 74, make this screw rod 60 can be subjected to 41 of this motor force-output shafts synchronously to order about rotation, two bearings 75 are divided into the both sides of this support ring plate 72, and wear with the another end of this screw rod 50 is coaxial, and be connected to all side ring surfaces on the interior side ring surface of this body section 71.

Composition by above-mentioned member, this actuator 10 is take this motor 40 as power source, driving this screw rod 50 rotates, and then drive this swivel nut 60 and carry out axial shift reciprocately, drive thereby reach the linear displacement that this inner tube 30 is back and forth stretched, these actuation technology belong to the known technology that general actuator can be reached, at this, the claimant not to be superfluous old again;

And need further to be pointed out especially and emphasize be: the body section 71 of this link 70 is to be directly fixed in this outer tube 20, and be embedded in the breach 42 of motor 40 1 ends by this card 73 respectively, fix according to this this motor 40 and these outer tube 20 the relative position of each other, thereby can be in these motor 40 runnings, avoid this rotary state that motor 40 produces and 20 relative positions of outer tube change, the drive state that motor-driven screw is rotated is maintained under good state;

Moreover, the body section 71 of this link 70 forms respectively the bearing hole that can arrange for this bearing 75 respectively in the both sides of this support ring plate 72, can make the rotation of this screw rod 50 more stable by set respectively this bearing 75, and provide the load of push/pull power, and in assembling, this screw rod 50 can be by a nylon nut 51 fixing, simultaneously with this screw rod 50, respectively this bearing 75, this body section 71 and this supports ring plate 72 give in conjunction with and fixing, the real genus of its assembly program is easy;

And, respectively this card 73 in above-mentioned explanation, this body section 71 and this support ring plate 72 belong to each other integrated single object, therefore, more can will have further link with this motor 40 with this screw rod 50 of being fixed, guarantee between the whole constituent components of this actuator 10 stability of position toward each other, advance to guarantee that the start of actuator is normal and reduce the possibility that fault occurs.

Claims

1. actuator includes:

Outer tube;

One inner tube is slidedly arranged in this outer tube with coaxial the stretching into of end;

One swivel nut is slidedly arranged in this outer tube, and is connected on an end end face of this inner tube;

One screw rod is spirally connected with this swivel nut, and an end also stretches in this inner tube;

One motor drives this bolt rotary with force-output shaft;

It is characterized in that, more include:

A connection piece, has a ring-type body section, amplexiform on the inboard tube wall that is fixed in this outer tube the side ring surface in addition, one supports ring plate, on the coaxial interior side ring surface that is based in this body section, and wear at least one card with the another end of this screw rod is coaxial, from the past extension of this axial end of body section, and be embedded on an end of this motor.

2. actuator according to claim 1, is characterized in that, the magnitude setting of described card is a pair of, is divided into to apart 180 degree angles in described body section.

3. actuator according to claim 1, it is characterized in that, described link more includes two bearings, is divided into coaxially with each other described support ring plate both sides, and be connected in series with the another end of described screw rod and in addition the side ring surface be connected on the interior side ring surface of described body section.

4. actuator according to claim 1, is characterized in that, described link more includes a tubulose coupling, coaxially is serially connected with described screw rod another end and described motor is exerted oneself between axle head.