CN103601043A - Stroke limiting device for electric cylinder and take-up mechanism - Google Patents

Stroke limiting device for electric cylinder and take-up mechanism Download PDF

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Publication number
CN103601043A
CN103601043A CN201310478659.3A CN201310478659A CN103601043A CN 103601043 A CN103601043 A CN 103601043A CN 201310478659 A CN201310478659 A CN 201310478659A CN 103601043 A CN103601043 A CN 103601043A
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electric cylinder
take
reel
block
projection
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CN201310478659.3A
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CN103601043B (en
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吴周欣
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FIRST TRANSMISSION TECHNOLOGY Co Ltd
Timotion Technology Co Ltd
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FIRST TRANSMISSION TECHNOLOGY Co Ltd
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Abstract

The invention discloses a stroke limiting device for an electric cylinder and a take-up mechanism. The electric cylinder comprises a base and an extension tube, and the stroke limiting device comprises a box body, a movable member, a block, a pair of switches and the take-up mechanism. The box body is fixed on the base and provided with a wall board, wherein a through hole is formed in the wall board. The movable member comprises a rod body penetrating the through hole in a connecting mode and capable of moving relative to the box body. The block is fixedly connected onto the rod body. The positions of the switches corresponding to the block are fixed on the box body, each switch is provided with a trigger portion for being touched by the block to produce an electrical signal, and the trigger portions are respectively located at two different ends of a moving path of the block. The take-up mechanism comprises a wire body, wherein the wire body is arranged in the extension tube and moves with the extension tube, and one end of the wire body is connected to the movable member. Therefore, the limitation position of a long distance can be controlled by utilizing a small-space action range.

Description

Stroke restricting means and take-up mechanism thereof for electric cylinder
The application is for dividing an application, and the applying date of original application is: on February 17th, 2011; Application number is: 201110044138.8; Denomination of invention is: stroke restricting means and take-up mechanism thereof for electric cylinder
Technical field
The present invention relates to a kind of electric cylinder, relate in particular to stroke restricting means and take-up mechanism thereof for a kind of electric cylinder.
Background technology
Current electric cylinder (Linear Actuator) is on the market of a great variety, wherein having a kind of electric cylinder is on a support, to assemble an electrical motor and an outer tube, at support, settle a guide screw and drive guide screw rotation with electrical motor, separately in guide screw outside, be bolted with a telescopic pipe, and in the outside socket of telescopic pipe one outer tube, one end of outer tube is to be fixed on support; So telescopic pipe can be with the driving of electrical motor, and axially with respect to outer tube, do linear reciprocating displacement along guide screw, but this kind of electric cylinder also cannot learn whether its telescopic pipe has moved to the stroke end when start, so continue start in unwitting situation at telescopic pipe start to the stroke end, just may cause the damage of this electric cylinder.
Industry is for solving foregoing problems, just develop a kind of linear electrical cylinder of tool stroke restricting means, it is that the end positions of portion is within the outer tube separately installed with a switch, and the one end that utilizes telescopic pipe has protruded out a block, in the inside retraction of telescopic pipe or while being outwards moved out to end position, its block will touch each switch and make electrical motor stop driving, by this to reach the object of controlling the electric cylinder actuating travel limit.
Yet, although said structure has the object of controlling the electric cylinder actuating travel limit, but its switch is the inside that is provided in outer tube, outer tube must form the space of settling for each switch especially for this reason, not only causes the increase assembly material cost of the difficult and suitable amplitude of making of outer tube; Another each switch is the two-end-point place that lays respectively at outer tube inside, in the maintenance process damaging, must carry out to electric cylinder the dismantlement work of most of assembly at assembly, and the loaded down with trivial details and inconvenience that makes maintenance become suitable; In addition, for the electric cylinder of some special shapes or specification, aforesaid stroke restricting means can not be installed setting, and the utmost point is waited to be improved and overcome.
Summary of the invention
An object of the present invention, is to provide a kind of electric cylinder stroke restricting means, and the configuration structure that it forms assembly with each utilizes the start scope in little space can be used for controlling the end position of long distance.
To achieve the above object, the invention provides a kind of electric cylinder stroke restricting means, described electric cylinder comprises a support and a telescopic pipe, the trip restraint device comprises a box body, a movable member, a block, pair of switches, a take-up mechanism, this box body is fixed on described support, this box body has a wallboard, at this wallboard, offers a through hole; This movable member comprises this through hole of cross-under and can make the body of rod moving relative to this box body; This block is fixed in this body of rod; This is fixed on this box body to corresponding this block position of switch, and each this switch has a trigger unit that produces electric signal for this block touching, and respectively this trigger unit is positioned at respectively the two-phase heterodoxy of this block mobile route; This take-up mechanism is placed in described telescopic pipe and follows movement, and this take-up mechanism comprises a line body, and one end of this line body is connected to this movable member; The inside retraction of wherein said telescopic pipe promotes this body of rod during to end position and moves together with this block, this block will touching this trigger unit wherein and make described telescopic pipe stop retracting; When described telescopic pipe convex extends end position, with this line body, pull this body of rod to move together with this block, this block will touch another this trigger unit and make described telescopic pipe stop shifting out.
Another object of the present invention, is to provide a kind of take-up mechanism for electric cylinder, and it can furl inner line body, to avoid line body to be wound in each inner assembly when lax.
To achieve the above object, the invention provides a kind of take-up mechanism for electric cylinder, described stroke restricting means comprises a movable member, and this take-up mechanism comprises a pedestal, a reel, a volute spring and a line body, and this pedestal is extended with a projection; This reel is articulated on this projection; One end of this volute spring is fixed on this projection other end and connects this reel; Two ends of this line body are separately fixed at this reel and described movable member; Wherein this reel is activated by the elastic force of this volute spring, and this reel of military order produces rotation and this line body is furled.
The present invention also has following effect, and it is to utilize the oblique plane of block to come touch trigger portion, can in minimum space, be equipped with maximum miles of relative movement, is reached integrally-built miniaturization.With the setting of retracing spring, make block after external force discharges automatically reversion to position placed in the middle originally.Utilize take-up mechanism setting, the tension masterpiece used time can be by reel automatic rolling for online body, and can effectively avoid being wound around and pulling apart by intraware.By adjusting screw cross-under on the end plate of telescopic pipe, can finely tune operation by the shift motion to telescopic pipe from outside.
Below in conjunction with the drawings and specific embodiments, describe the present invention, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 stroke restricting means of the present invention is for electric cylinder three-dimensional exploded view;
Fig. 2 stroke restricting means three-dimensional exploded view of the present invention;
Fig. 3 take-up mechanism three-dimensional exploded view of the present invention;
Fig. 4 take-up mechanism assembled sectional view of the present invention;
Fig. 5 stroke restricting means of the present invention is for electric cylinder combination schematic diagram;
Fig. 6 stroke restricting means of the present invention is for electric cylinder assembled sectional view;
Fig. 7 stroke restricting means of the present invention is used constitution diagram () for electric cylinder;
Fig. 8 stroke restricting means of the present invention is used constitution diagram (two) for electric cylinder.
Wherein, Reference numeral
Figure BDA0000395507110000031
Figure BDA0000395507110000041
The specific embodiment
Relevant detailed description of the present invention and technology contents, coordinate accompanying drawing to be described as follows, yet appended accompanying drawing only provides reference and explanation use, is not used for the present invention to be limited.
Refer to shown in Fig. 1, the invention provides stroke restricting means and take-up mechanism thereof for a kind of electric cylinder, this trip restraint device 1 mainly comprises a box body 10, a movable member 20, a block 30, pair of switches 40,40 ' and one take-up mechanism 50.
Refer to shown in Fig. 2, it is made that box body 10 can be plastic or other material, it is mainly formed by a base plate 11 with from the base plate 11 upwardly extending a pair of wallboards 12 in edge and pair of side plates 13, and each wallboard 12 interconnects with each side plate 13, and on each wallboard 12, offers a through hole 14 of mutual correspondence.
Movable member 20 comprises a body of rod 21 and a block 22, zone line at the body of rod 21 offers separate a pair of slot 211, end forms a thread segment 212, this body of rod 21 be cross-under in aforementioned through-hole 14 and relatively box body 10 as linearity, move forward and backward.It is one stepped that block 22 is roughly, it has a stopper section 221, separately on the block 22 of stopper section 221 sides, offer a perforation 222 and be provided with one first screw 223, this block 22 is to utilize perforation 222 to be socketed in the body of rod 21, and lock at the thread segment 212 of the body of rod 21 by nut, and block 22 is exposed in the space outerpace of wallboard 12.In addition, the movable member 20 of the present embodiment also comprises a pair of retracing spring 23,23 ', this is that elastic clip is pulled between block 30 and the medial surface of wallboard 12 (consulting shown in Fig. 1) respectively to retracing spring 23,23 ' so that block 30 after external force discharges automatically reversion to position placed in the middle originally.
The block 30 of the present embodiment is roughly octagon, but this shape is not limited, it has two pairs of oblique planes 31, and on block 30, offer the axis hole 32 running through, this block 30 is to be socketed in after the aforementioned body of rod 21 with axis hole 32, again respectively with the corresponding aforementioned slot 211 position snappings of a clasp 24, thereby move to follow the body of rod 21 middle that makes block 30 be fixed on the body of rod 21; Aforesaid retracing spring 23,23 ' is that elastic clip is pulled between the side of block 30 and the medial surface of aforementioned wallboard 12 again.
Each switch 40, the 40 ' position corresponding to block 30 are fixed in the inner space of box body 10, each switch 40,40 ' has respectively a trigger unit 41,41 ' that produces electric signal for block 30 touchings, and each trigger unit 41,41 ' lays respectively at the forward and backward two-phase heterodoxy of block 21 mobile routes.
Refer to shown in Fig. 3 and Fig. 4, take-up mechanism 50 mainly comprises a pedestal 51, a reel 52, a volute spring 53 and a line body 54, this pedestal 51 is mainly consisted of coverboard 512 on coverboard 511 and once, at lower coverboard 511 middle positions, be extended with a projection 513, separately in projection 513 centers, be provided with a profile groove 514, upper coverboard 512 and lower coverboard 511 are to be fixed together by the solid assembly of the spiral shells such as screw, and in the both sides of pedestal 51, be provided with a post hole 515 and a screw 516, separately the pedestal 51 at corresponding projection 513 is provided with a through wires hole 517.
Reel 52 is to be articulated in projection 513 and to be located in pedestal 51 inside, 522, the interior ring that this reel 52 is mainly formed on foreign steamer 521 inner spaces by a foreign steamer 521 and interval forms, in the upper and lower parts of foreign steamer 521, protruded out respectively a flange 523, in case principal vertical line body 54 comes off from foreign steamer 521,522, interior ring is consisted of three arc plates.
Volute spring 53 is by by the crooked coiling and molding of sheetmetal, forms an interpolating unit 531, and form a hook part 532 in the end of its outer peripheral edges at the middle position of this volute spring 53; Volute spring 53 is to be installed with in the inner space of interior ring 522, and penetrates the profile groove 514 of projection 513 and fix with interpolating unit 531, and 532 of hook parts are to hook to be located on interior ring 522.
One end of line body 54 penetrates and is fixed on reel 52 from aforementioned through wires hole 517, and the other end of line body 54 is screwed in aforementioned the first screw 223 by screw and is fixed on (as shown in Figure 1) on block 22.
Refer to shown in Fig. 5 and Fig. 6, stroke restricting means 1 of the present invention is to be applied on a linear electrical cylinder 8, this electric cylinder 8 comprises a support 81, one electrical motor 82, one transmission device 83, one stationary pipes 84 and a telescopic pipe 85 (as shown in Figure 1), electrical motor 82 and stationary pipes 84 are fixed on support 81 and are roughly a L word shape, transmission device 83 has a guide screw 831, one end of guide screw 831 is placed in support 81 and by worm and wormwheel group by electrical motor 82 rotation that drives, telescopic pipe 85 comprises an inner tube 852 and an outer tube 851, outer tube 851 is the outer peripheral edges that are socketed in stationary pipes 84, inner tube 852 has and be mutually a spirally connected nut 853 of transmission of aforementioned guide screw 831, and be installed in the inner space of stationary pipes 84, inner tube 852 and outer tube 851 be affixed by an end plate 854 and together with interlock.During combination, be to wear box body 10 and be fixed on (as shown in Figure 1) on support 81 with bolt, and each switch 40,40 ' is electrically connected to electrical motor 82 (scheming not shown).
In addition, refer to shown in Fig. 3 and Fig. 6, take-up mechanism 50 of the present invention also comprises a guide pillar 55 and an adjustment screw rod 56, and end plate 854 other ends that one end of guide pillar 55 is fixed on telescopic pipe 85 pass aforesaid post hole 515, and adjusting screw rod 56 and guide pillar 55 is to be parallel relation configuration.Adjust screw rod 56 and wear the end plate 854 of telescopic pipe 85 and be screwed onto in the screw 516 of pedestal 51, so, can externally to the shift motion of telescopic pipe 85, finely tune operation.
Refer to shown in Fig. 7, during use, in the process of telescopic pipe 85 inside retractions, reel 52 is activated by the elastic force of volute spring 53, and military order reel 52 produces anticlockwise direction rotation and line body 54 is furled to action; In addition in the inside retraction of telescopic pipe 85 during to end position, that the stopper section 221 that end with nut 853 presses block 22 moves inward, with the body of rod 20, drive block 30 to move together, and with the oblique plane 31 at block 30 rears, the trigger unit 41 of aforementioned switches 40 is touched and pressed, so can make the electrical motor 82 being electrically connected with switch 40 stop start, and make telescopic pipe 85 stop continuing the action of retraction.
Refer to shown in Fig. 8, otherwise, in the process that telescopic pipe 85 outwards protrudes out, take-up mechanism 50 is to be fixed on the end plate 854 of telescopic pipe 85, by follow telescopic pipe 85 start and outwardly sidesway go out, now reel 52 is subject to pulling of line body 54 and does unwrapping wire action by generation clockwise direction rotation and to line body 54; In addition when telescopic pipe 85 convexes extend end position, line body 54 is stretched just completely, after telescopic pipe 85 continues to shift out outwardly, to pull the body of rod 20 outwards to move together with block 30 with line body 50, and touch and press with the trigger unit 41 ' of 31 pairs of aforementioned switches 40 ' of oblique plane in block 30 the place aheads, so, can make the electrical motor 82 being electrically connected with switch 40 ' stop start, and make telescopic pipe 85 stop the action that continues to shift out.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.

Claims (6)

1. for a take-up mechanism for electric cylinder, described electric cylinder comprises a telescopic pipe, and described telescopic pipe has an end plate, it is characterized in that, comprising:
One pedestal, it is extended with a projection and is provided with a screw;
One reel, is articulated on this projection;
One volute spring, its one end is fixed on this projection other end and connects this reel;
One line body, its two end is separately fixed at this reel and described electric cylinder; And
One adjusts screw rod, wears this end plate and is screwed onto in this screw;
Wherein this reel is activated by the elastic force of this volute spring, and this reel of military order produces rotation and this line body is furled.
2. the take-up mechanism for electric cylinder according to claim 1, it is characterized in that, this pedestal comprise coverboard with to coverboard on should lower casing plate be connected, this projection extends from this lower coverboard, this reel is installed with on this in coverboard and this lower coverboard.
3. the take-up mechanism for electric cylinder according to claim 2, is characterized in that, this pedestal is provided with a through wires hole, and this line body penetrates and is fixed on this reel from this through wires hole.
4. the take-up mechanism for electric cylinder according to claim 1, is characterized in that, also comprises a guide pillar, and this pedestal is provided with a post hole, and one end of this guide pillar is fixed on this post hole of cross-under of this end plate other end, and this adjustment screw rod and this guide pillar are configured in parallel.
5. the take-up mechanism for electric cylinder according to claim 1, it is characterized in that, this projection is provided with a profile groove, this reel has an interior ring, the central authorities of this volute spring form an interpolating unit, outer peripheral edges and form a hook part, this interpolating unit penetrates this profile groove and fixes, and this hook part hooks and is located on this interior ring.
6. the take-up mechanism for electric cylinder according to claim 5, is characterized in that, this reel also has a foreign steamer that is formed on this interior ring outside, and this foreign steamer is wound around for this line body, and has protruded out respectively a flange at the upper and lower end of this foreign steamer.
CN201310478659.3A 2011-02-17 2011-02-17 Electric cylinder stroke restricting means and take-up mechanism thereof Active CN103601043B (en)

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Publication number Priority date Publication date Assignee Title
TWM478082U (en) 2014-01-22 2014-05-11 Timotion Technology Co Ltd Linear actuating device
CN104836369B (en) * 2014-02-07 2017-05-24 第一传动科技股份有限公司 Linear actuator

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CN88211466U (en) * 1988-02-29 1988-12-28 赖元良 Warning and safety device for overload lifting
US5762281A (en) * 1997-02-18 1998-06-09 Foley; Michael Automatically loading cord winder apparatus and method
CN2497112Y (en) * 2001-09-18 2002-06-26 首钢莫托曼机器人有限公司 Two-action cylinder
CN2804352Y (en) * 2005-05-10 2006-08-09 周建君 Range controller of electric shutter
CN201377481Y (en) * 2009-04-16 2010-01-06 毛孟其 Cylinder stroke precise locating device
CN201802699U (en) * 2010-08-25 2011-04-20 洛阳北方玻璃技术股份有限公司 Cylinder capable of adjusting stroke position of piston rod

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Publication number Priority date Publication date Assignee Title
EP1420504B1 (en) * 2002-11-15 2012-06-13 Ab Skf Limit switch for a linear drive
DE102005025748B4 (en) * 2005-06-02 2011-07-28 Andreas Grasl Electricoline drive with limit stop
CN201181422Y (en) * 2008-03-13 2009-01-14 模帝科电子科技股份有限公司 Actuator with adjustable limit switch
CN201490831U (en) * 2009-08-11 2010-05-26 模帝科电子科技股份有限公司 Push rod structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN88211466U (en) * 1988-02-29 1988-12-28 赖元良 Warning and safety device for overload lifting
US5762281A (en) * 1997-02-18 1998-06-09 Foley; Michael Automatically loading cord winder apparatus and method
CN2497112Y (en) * 2001-09-18 2002-06-26 首钢莫托曼机器人有限公司 Two-action cylinder
CN2804352Y (en) * 2005-05-10 2006-08-09 周建君 Range controller of electric shutter
CN201377481Y (en) * 2009-04-16 2010-01-06 毛孟其 Cylinder stroke precise locating device
CN201802699U (en) * 2010-08-25 2011-04-20 洛阳北方玻璃技术股份有限公司 Cylinder capable of adjusting stroke position of piston rod

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CN103601043B (en) 2016-01-20
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