CN201008114Y

CN201008114Y - Rapid release device for electric cylinder

Info

Publication number: CN201008114Y
Application number: CNU2007200030252U
Authority: CN
Inventors: 王嘉蓉
Original assignee: FIRST TRANSMISSION TECHNOLOGY Co Ltd
Current assignee: FIRST TRANSMISSION TECHNOLOGY Co Ltd
Priority date: 2007-01-31
Filing date: 2007-01-31
Publication date: 2008-01-16
Anticipated expiration: 2017-01-31

Abstract

The utility model provides a fast release device of an electro motion tank, which comprises a separating and engaging device, a throw device and a pull device, wherein the engaging and separating device is respectively sleeved at the direction rod of the electro motion tank and base body inner part and comprises a fixing base and a clutch, the throw device is arranged at the shell body inner part of the electro motion tank and comprises a vibration arm hinged at the base body, one end of the vibration arm corresponds to the clutch to control leave-joint movement of the fixing base and clutch, the pull device comprises a tie rod unit whose one end is arranged in the shell body and connected on the vibration arm, the other end passes the shell body to connect the connecting block. Like this, the arc vibration is transferred into linear vibration, which largely decreases pull force of operators.

Description

The fast release device of electronic cylinder

Technical field

The utility model relates to a kind of fast release device, particularly a kind of quick release device that is used for electric hospital bed electronic cylinder.

Background technology

Electronic cylinder (Actuator) being applied to aspects such as electric hospital bed, treadmill, wheelchair, with the adjustment conversion as position height or elevation angle size, has been quite common and general.Wherein when sufferer is done first aid process, have the fast release device of electronic cylinder being done the rapid release effect, can make sick bed can promptly adjust conversion, to strive for the most valuable gold rescue time, the then important topic of studying for the utility model.

In the fast release device of the electronic cylinder of prior art, this electronic cylinder has motor mechanism and transmission mechanism, the worm screw that this motor mechanism comprises motor and outwards protrudes out from motor center, and transmission mechanism comprises driving screw, is socketed in an end of driving screw and with the worm gear of aforementioned worm engaging transmission and be coated on an end of driving screw and the pedestal of worm gear, this fast release device mainly utilizes the cable of pulling arm and being connected an end of pulling arm, control the clutch action between worm gear and the worm screw, to reach the effect of releasing soon of electronic cylinder.

Yet, the fast release device of the electronic cylinder of prior art, on using, reality still has following problem points, this is pulled arm and is pressed against on the pedestal with its fulcrum, and with the arc mode do swing dial from, because its application of force direction of pulling arm and cable constantly changes, the active force that causes its institute to apply is bigger, has some setbacks spurring in the use.In addition, this pedestal offers for pulling the hole slot that arm penetrates, and usually makes aqueous vapor or dust invade pedestal inside, and then makes inner assembly produce harmful effects such as corrosion, and significantly reduces its useful life, demands urgently really being improved.

The utility model content

The purpose of this utility model is to provide a kind of fast release device of electronic cylinder, and it snaps onto on the swing arm by the pull bar group, and the swing of arc is converted to linear moving, thereby significantly alleviates the pulling force of cable that the operator is applied to.

To achieve the above object, the utility model provides a kind of fast release device of electronic cylinder, this electronic cylinder has motor mechanism and transmission mechanism, this motor mechanism comprises housing, and transmission mechanism comprises driving screw and be coated on the pedestal of an end of driving screw, this fast release device comprises clutch, trip gear and pulling mechanism, and wherein this clutch is socketed on the driving screw and is installed with in pedestal inside, and its clutch that comprises holder and dispose corresponding to holder; This trip gear is installed with in enclosure interior, and it comprises the swing arm that is articulated in pedestal, and an end of this swing arm is corresponding to the clutch setting, in order to the clutch action between control holder and the clutch; This pulling mechanism comprises the pull bar group, and the one end is installed with in enclosure interior and is connected on the swing arm, and the other end then passes outside and is connected with junction piece.

Another purpose of the present utility model is to provide a kind of fast release device of electronic cylinder, and it utilizes pulling mechanism to be fixed in earlier in the upper shell, upper shell is covered be connected the lower house top again, so can significantly simplify the assembling flow path and the installation time of electronic cylinder.

Another purpose of the present utility model, be to provide a kind of fast release device of electronic cylinder, its closed integrated making by upper and lower casing, and between upper shell and pull bar, be provided with waterproof washer, thus make enclosure interior have effects such as better dustproof, waterproof, protection against the tide.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the electronic cylinder of the utility model;

Fig. 2 is clutch of the present utility model and transmission mechanism three-dimensional exploded view;

Fig. 3 is pulling mechanism of the present utility model and housing three-dimensional exploded view;

Fig. 4 is the combination schematic diagram of the electronic cylinder of the utility model;

Fig. 5 is the assembled sectional view before the pulling mechanism action of the present utility model;

Fig. 6 is the assembled sectional view before the clutch action of the present utility model;

Fig. 7 is the assembled sectional view after the clutch action of the present utility model.

In the accompanying drawings, the list of parts of each label representative is as follows:

Clutch 10

Holder 11 locating pieces 111

Clutch 12 flanges 121

Location notch 122 grooves 123

Pad 13 compression springs 14

Trip gear 20

Swing arm 21 cylinders 211

Poke rod 212

Pulling mechanism 30

Pull bar group 31 pull bars 311

Clip 312 clamping plates 32

Elastomer 33 waterproof washers 34

Junction piece 35 bar-shaped troughs 351

Auxiliary fixing structure 40

Annular seating 41 cover plates 42

Accommodating chamber 43

Motor mechanism 6

Motor 61 worm screws 611

Lower house 62 upper shells 63

Transmission mechanism 7

Driving screw 71 left pedestals 72

Right pedestal 73 worm gears 74

Positioning tube 741 embedded fixed pieces 742

Telescoping tube 75 outer tubes 76

Cable group 8 cables 81

Embodiment

Relevant detailed description of the present utility model and technology contents, conjunction with figs. is described as follows, however appended figure only is used to provide reference and explanation, is not to be used for the utility model is limited.

What Fig. 1 was extremely shown in Figure 4 is three-dimensional exploded view, clutch and the transmission mechanism three-dimensional exploded view that is respectively the electronic cylinder of the utility model, the combination schematic diagram that spurs mechanism and housing three-dimensional exploded view and electronic cylinder.The utility model provides a kind of fast release device of electronic cylinder, this electronic cylinder has motor mechanism 6 and transmission mechanism 7, this motor mechanism 6 comprises motor 61, is coated on the lower house 62 and the corresponding upper shell 63 that covers above lower house 62 of motor 61 outsides, has protruded out worm screw 611 at the center of motor 61.Transmission mechanism 7 comprises driving screw 71, is coated on the left and

right pedestal

72,73 of an end of driving screw 71 (this pedestal also can be one and constitutes), be socketed in driving screw 71 and with aforementioned worm screw 611 be meshing with each other transmission worm gear 74, be screwed onto driving screw 71 and can the relative outer tube 76 that it is made linearly moving telescoping tube 75, is fixed in left and

right pedestal

72,73 1 sides and is coated on telescoping tube 75 outsides, the right side of this worm gear 74 is formed with positioning tube 741 and embedded fixed piece 742 (as shown in Figure 2).This fast release device comprises clutch 10, trip gear 20 and pulling mechanism 30.

Wherein, clutch 10 (as shown in Figure 2) is socketed in the rear of driving screw 71 and is installed with in left and

right pedestal

72,73 inside, and it comprises holder 11, clutch 12, pad 13 and compression spring 14, this holder 11 is fixed on driving screw 71 by its centre bore and therewith rotates, and its rear side is formed with most locating pieces 111 of annular array at interval.This clutch 12 is cylindrical, be outward extended with round flange 121 in its bottom rear, be formed with location notch 122 in addition with aforementioned locating piece 111 corresponding matching in the place ahead, inside of clutch 12, and heart hole inner wall forming has the groove 123 that is provided with at interval therein, and this groove 123 embeds connection for the embedded fixed piece 742 of worm gear 74.This pad 13 is pulled between the positioning tube 741 corresponding end faces of clutch 12 and worm gear 74 by folder.This compression spring 14 is set in positioning tube 741 outer peripheral edge, and is pulled between the mutual corresponding end face of clutch 12 and worm gear 74 by folder.

Trip gear 20 (as shown in Figure 1) is installed with in upper and

lower casing

63,62 inside, and comprise " U " shape swing arm 21 that is articulated in left and

right pedestal

72,73, be formed with cylinder 211 in the middle of the blind end of this swing arm 21, and the openend inboard has protruded out two circular poke rods 212 respectively, each poke rod 212 penetrates each

pedestal

72,73 inside, and amplexiform on the flange 121 (as shown in Figure 5) of clutch 12, in order to the clutch action between control holder 11 and the clutch 12.

Pulling mechanism 30 (as shown in Figure 3) comprises pull bar group 31, two clamping plates 32, elastomer 33, waterproof washer 34 and junction pieces 35, this pull bar group 31 comprises pull bar 311 and solid " U " clevis button 312 at rear, pull bar 311 stage casing of spiral shell, the opening of this clip 312 snaps onto on the cylinder 211 (as shown in Figure 4) of swing arm 21, and an end of pull bar 311 and clip 312 are installed with in upper shell 63 inside, and cooperate screw that pull bar 311 is fixedly connected on upper shell 63 with clamping plate 32.This elastomer 33 can be compression helical spring, and it is socketed on the pull bar 311 and is pulled on the corresponding end face of clip 312 and clamping plate 32 by folder.This waterproof washer 34 is socketed on the pull bar 311 and is fixed on the upper shell 63, invades upper and

lower casing

63,62 inside to prevent outside aqueous vapor, thereby reaches waterproof effect effectively.This junction piece 35 is fixed in the outboard end of pull bar 311, and is formed on the outside of upper and

lower casing

63,62, is provided with two bar-shaped troughs 351 on junction piece 35.

In addition, the utility model also includes auxiliary fixing structure 40, it is socketed on the outer tube 76 and with aforesaid upper and

lower casing

63,62 end faces and amplexiforms, the cover plate 42 that this auxiliary fixing structure 40 comprises annular seating 41 and is articulated in annular seating 41 1 sides, and between annular seating 41 and cover plate 42, be formed with an end of confession pull bar group 31 and the accommodating chamber 43 that junction piece 35 is installed with.

After above-mentioned combination, can with an end of two cable group 8 respectively cross-under be fixed on annular seating 41 1 sides, and cable 81 1 ends of each cable group 8 are embedded in the bar-shaped trough 351 of junction piece 35, again cover plate 42 is covered on annular seating 41.So, can be combined into electronic cylinder structure (as shown in Figure 4).

Fig. 5, Figure 6 and Figure 7 be assembled sectional view, the assembled sectional view before the clutch action and the assembled sectional view after the action that is respectively before the pulling mechanism action of the present utility model.Electronic cylinder of the present utility model can be installed on the sick bed (figure does not show), worm screw 611 rotations by motor 61, the worm gear 74 that is engaged on transmission mechanism 7 is rotated, drive driving screw 71 rotations simultaneously, and transmission outwards protrudes out or inwardly retraction action at thereon the telescoping tube 75 of being spirally connected, and controls the leading portion of sick bed or the lifting action of back segment thus.

In the time of when sufferer is carried out first aid process sick bed being the level of state, then can spur cable 81 moves junction piece 35, the related linearity that makes pull bar group 31 do outwards to protrude out moves, thereby making swing arm 21 is that pivot is swung with its articulated section, and break away from connection status with holder 11 by the flange 121 that its poke rod 212 is stirred clutch 12, do not pin down mutually between driving screw 71 and the worm gear 74 this moment and free to rotate.When telescoping tube 75 being imposed when axial thrust the weight of sick bed itself (or by), driving screw 71 will be rotated with respect to telescoping tube 75, so that in the telescoping tube 75 quick retraction outer tubes 26, and reach the effect of sick bed rapid release.

Above-described execution mode is to be preferred embodiment, and the utility model practical range is not limited to this, and the equivalence of doing according to the utility model protection range and description changes or modifies, and all should belong to scope of the present utility model.

Claims

1. the fast release device of an electronic cylinder, described electronic cylinder has motor mechanism (6) and transmission mechanism (7), described motor mechanism (6) comprises housing (63), described transmission mechanism (7) comprises driving screw (71) and is coated on the pedestal (72,73) of an end of driving screw (71), it is characterized in that described fast release device comprises:

Clutch (10) is socketed in described driving screw (71) and goes up and be installed with in described pedestal (72,73) inside, the clutch (12) that described clutch (10) comprises holder (11) and disposes corresponding to described holder (11);

Trip gear (20), be installed with in described housing (63) inside, described trip gear (20) comprises the swing arm (21) that is articulated in described pedestal (72,73), one end of described swing arm (21) is provided with corresponding to described clutch (12), in order to control the clutch action between described holder (11) and the described clutch (12); And

Pulling mechanism (30) comprises pull bar group (31), and the one end is installed with in described housing (63) inside and is connected on the described swing arm (21), and the junction piece (35) that the other end passes described housing (63) outside and described pulling mechanism (30) is connected.

2. the fast release device of electronic cylinder as claimed in claim 1, it is characterized in that, described swing arm (21) is " U " shape, be formed with cylinder (211) at its blind end, two poke rods (212) have been protruded out respectively in its openend inboard, each poke rod (212) penetrates each pedestal (72,73) inside, and amplexiforms on described clutch (12).

3. the fast release device of electronic cylinder as claimed in claim 2, it is characterized in that, described pull bar group (31) comprises pull bar (311) and is connected the clip (312) of described pull bar (311), described clip (312) is " U " shape, and its opening snaps onto on the described cylinder (211) of described swing arm (21).

4. the fast release device of electronic cylinder as claimed in claim 3 is characterized in that, described pulling mechanism (30) also includes clamping plate (32), and described clamping plate (32) embedding limit goes up and is fixed at described pull bar (311) and is connected described housing (63) inside.

5. the fast release device of electronic cylinder as claimed in claim 4, it is characterized in that, described pulling mechanism (30) also includes elastomer (33), and described elastomer (33) is socketed in described pull bar (311) and upward and by folder pulls between described clip (312) and described clamping plate (32).

6. the fast release device of electronic cylinder as claimed in claim 5 is characterized in that, described elastomer (33) is a compression helical spring.

7. the fast release device of electronic cylinder as claimed in claim 3 is characterized in that, described pulling mechanism (30) also includes waterproof washer (34), and described waterproof washer (34) is socketed in described pull bar (311) and goes up and be fixed on the described upper shell (63).

8. the fast release device of electronic cylinder as claimed in claim 1 is characterized in that, is provided with two bar-shaped troughs (351) on the described junction piece (35) of described pulling mechanism (30).

9. the fast release device of electronic cylinder as claimed in claim 1 is characterized in that, also includes auxiliary fixing structure (40), and described fixing structure (40) is socketed in described transmission mechanism (7) and goes up and dispose corresponding to described housing (63) one sides.

10. the fast release device of electronic cylinder as claimed in claim 9, it is characterized in that, described fixing structure (40) comprises annular seating (41) and is articulated in the cover plate (42) of described annular seating (41) one sides, is formed with an end of the described pull bar group of confession (31) and the accommodating chamber (43) that described junction piece (35) is installed with between described annular seating (41) and described cover plate (42).