TWM568847U - Power driven clutch device improvement for lifts - Google Patents

Abstract

The present invention discloses an improvement of a power-driven clutch device for an elevator. The power-driven clutch device is coupled to a winding unit and a power unit of the elevator, and includes a transmission wheel, a passive compression piece, an elastic member, and an adjustment nut. Through the cooperation of the transmission wheel and the passive pressing piece, the power of the power unit is transmitted to the winding unit, and the driving force of the driving wheel and the passive pressing piece is formed by the reaction force of the winding unit feeding back, thereby the power of the clutching power unit, Avoid damage to the components associated with the lift.

Description

Lift drive power drive clutch improvement

This creation is related to the technical field of power clutching, especially the improvement of a power-driven clutch device for an elevator.

Referring to Figures 10 to 13, the conventional portable elevator 90 generally includes a telescopic support 91, a motor unit 92 and a winding unit 93 disposed on the side of the telescopic support 91, and a simultaneous motor unit 92 and a winding unit. 93 connected clutch device 94.

The winding unit 93 includes a passive shaft 931 and a reel 932 that are interlocked with each other. In implementation, the passive shaft 931 and the reeling wheel 932 are interlocked, and are selected from gears.

The clutch device 94 includes a driving wheel 941, a passive pressing piece 942, a plurality of balls 943, an elastic member 944, and a screwing member 945.

The driving wheel 941 has a main ring gear 9412, a shaft hole 9413, and a plurality of first bead slots 9414. The aforementioned main ring gear 941 is disposed along the radially outer circumferential surface of the driving wheel 941. The shaft hole 9413 is formed by a concentric driving wheel 941, and the passive shaft 931 of the winding unit 93 is provided. Each of the first bead grooves 9414 is concentrically recessed with the shaft hole 9413 and formed on an end surface of the driving wheel 941 and the passive pressing piece 942.

The passive pressing piece 942 has a spline hole 9421, a plurality of second bead grooves 9422, and a ball groove 9423. The aforementioned spline hole 9421 is formed by the concentric passive pressing piece 942 and is matched with the spline 9312 of the passive shaft 931. Each of the aforementioned second beads The groove 9422 is formed to match each of the first bead grooves 9414 and is formed on the end surface of the passive pressing piece 942 that abuts against the driving wheel 941. The ball groove 9423 is formed in an annular recess formed on the end surface of the passive pressing piece 942 and communicates with each of the second bead grooves 9422.

Each of the balls 943 described above is placed in the first and second bead slots 9414 and 9422.

The elastic member 944 is sleeved on the outer peripheral side of the passive shaft 931, and one end abuts against the passive pressing piece 942, and the normally pushed passive pressing piece 942 abuts against the driving wheel 941.

The screwing element 945 is screwed to one end of the driven shaft 931 to restrain the driving wheel 941.

By the composition of the above components, the motor unit 92 rotates the power, drives the driving wheel 941 of the clutch device 94, transmits the ball 943 to the passive pressing piece 942, rotates the passive pressing piece 942, and synchronously drives the driven shaft 931 and its fit. The linked reel disk 932 achieves the purpose of winding or releasing the wire body 95.

The driving wheel 941 transmits power to the passive pressing piece 942 through the ball 943, and the passive pressing piece 942 drives the clutching action by the reaction force (when the preset force is exceeded), so that the passive pressing piece 942 compresses the elastic element 944 to form a retraction ( Moving along the passive axis 931, the balls 943 are driven by the driving wheel 941 (the first bead slot 9414) to roll out from the second bead slot 9422 and move along the ball slot 9423 to the adjacent second bead slot 9422. Thereby, the power output from the clutch motor unit 92 is used to avoid the lack of power load and the loss of related components.

Although the conventional structural design can achieve the purpose of transmitting and disengaging power, there are still some defects in its structure. For example, the clutch device 94 transmits the ball 943 through the displacement movement of the ball groove 9423 to achieve the clutching purpose, resulting in the ball groove 9423. A and the ball groove 9423 are easily worn at the edge of the second bead 9422, so that the clutch force is reduced and worn. The more serious the force of the clutch is, the lower it will be.

Since the passive pressing piece 942 is worn, the passive pressing piece 942 has a poor life, resulting in a shortened maintenance cycle, high maintenance cost, and frequent replacement of the passive pressing piece 942.

Moreover, the installation of the plurality of balls 943 is also a drawback of the conventional clutch device 94, because the first and second bead slots 9414, 9422 do not have a mandatory binding force, and the ball 943 is required to be installed. Putting them one by one, in addition to time-consuming and labor-intensive, is easier to fall out during the installation or maintenance process, and once the ball 943 falls out and is contaminated, there is a time-consuming cleaning process to be carried out, which is very inconvenient and troublesome.

In view of the above problems and deficiencies of the prior art, the main purpose of the present invention is to provide an improved power-driven clutch device for an elevator, which is designed to remove the lack of use of the ball technique.

According to the above object of the present invention, an improvement of a power-driven clutch device for an elevator is provided. The power-driven clutch device is coupled to a winding unit and a power unit of the elevator, and includes a transmission wheel, a passive compression piece, an elastic element, and a Adjust the nut. Through the cooperation of the transmission wheel and the passive pressing piece, the power of the power unit is transmitted to the winding unit, and the driving force of the driving wheel and the passive pressing piece is formed by the reaction force of the winding unit feeding back, thereby the power of the clutching power unit, Avoid damage to the components associated with the lift.

10‧‧‧Power driven clutch

11‧‧‧Drive wheel

112‧‧‧Main ring teeth

114‧‧‧Axis hole

116‧‧‧Drive groove

1162‧‧‧ steep wall

1164‧‧‧Slow wall

12‧‧‧ Passive compression

122‧‧‧Spline hole

124‧‧‧Bumps

1242‧‧‧ steep slope

1244‧‧‧Slow slope

13‧‧‧Flexible components

14‧‧‧Adjustment nut

933‧‧‧ ratchet disk

934‧‧‧ pawl members

<知知>

90‧‧‧Manual lifts

91‧‧‧ telescopic bracket

92‧‧‧Motor unit

93‧‧‧Winding unit

94‧‧‧ clutch device

931‧‧‧Passive axis

932‧‧‧Reel Roulette

941‧‧‧Drive wheel

942‧‧‧ Passive compression

943‧‧‧ balls

944‧‧‧Flexible components

945‧‧‧ screw components

9412‧‧‧Main ring teeth

9413‧‧‧Axis hole

9414‧‧‧The first bead

9421‧‧‧Spline hole

9422‧‧‧Second beads

9423‧‧‧Rolling groove

95‧‧‧Line body

A‧‧‧

Figure 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is a partial cross-sectional view showing the embodiment shown in Fig. 1.

Fig. 3 is an exploded view of a partial member of the embodiment shown in Fig. 2.

Fig. 4 is a cross-sectional view taken along line 4-4 of Fig. 3;

Fig. 5 is a cross-sectional view taken along line 5-5 of the embodiment shown in Fig. 3.

Figure 6 is a partial actuation sectional view (I) of the embodiment shown in Figure 3.

Figure 7 is a partial actuation sectional view (II) of the embodiment shown in Figure 3.

Figure 8 is a partial actuation sectional view (III) of the embodiment shown in Figure 3.

Figure 9 is a partial schematic view of the embodiment shown in Figure 1.

Figure 10 is a perspective view of an embodiment of a conventional lift.

Figure 11 is a partial cross-sectional view of the embodiment shown in Figure 10.

Fig. 12 is an exploded view of a partial member of the embodiment shown in Fig. 11.

Figure 13 is a partial schematic view of the embodiment shown in Figure 11.

Hereinafter, the modified embodiment of the power-driven clutch device of the present elevator will be further described with reference to the related drawings. For the purpose of understanding the present embodiment, the same components are denoted by the same reference numerals.

Referring to Figures 1 through 5, the power-driven clutch device 10 of the present invention is used to connect the power unit 92 and the winding unit 93 of the conventional elevator and transmit or disengage the power output from the clutch power unit 92.

The power-driven clutch device 10 of the present invention includes a transmission wheel 11, a passive compression piece 12, an elastic member 13, and an adjustment nut 14.

The transmission wheel 11, as shown in Figures 3 and 4, has a main ring tooth 112, a shaft hole 114, and a plurality of transmission grooves 116. The main ring gear 112 is disposed along the radially outer circumferential surface of the transmission wheel 11 for engaging with the power unit 92 to receive the power of its output. The shaft hole 114 is formed through the transmission wheel 11, and the passive shaft 931 of the winding unit 93 is provided to extend. Each of the aforementioned transmission grooves 116 is a shaft hole The concentric depression is formed on the end surface of the transmission wheel 11 and the passive pressing piece 12, and has a fan-shaped contour and an annular configuration. Further, each of the two sides of the transmission groove 116 has a steep wall surface 1162 and a slow wall surface 1164.

The passive pressing piece 12, as shown in FIGS. 3 and 5, has a spline hole 122 and a plurality of bumps 124. The aforementioned spline hole 122, the concentric shaft hole 114 is formed through the passive pressing piece 12, and is matched with the spline 9312 of the passive shaft 931. Each of the above-mentioned bumps 124 is matched with each of the transmission grooves 116 formed on the end surface of the passive pressing piece 12 and the transmission wheel 11, and has a fan-shaped and annular configuration, and the two sides of each of the projections 124 correspond to the respective transmission grooves. The steep wall surface 1162 and the slow wall surface 1164 of 116 also have a matching steep slope 1242 and a gentle slope 1244. In implementation, each of the bumps 124 and the respective drive recesses 116 are selectively interchangeable.

The elastic member 13 is attached to the outer peripheral side of the passive shaft 931 as shown in FIG. 2, and one end abuts against the passive pressing piece 12, and the passive pressing piece 12 abuts against the transmission wheel 11.

Referring to the first and second figures, the adjustment nut 14 is correspondingly locked to one end of the passive shaft 931, and restrains and adjusts the pre-pressure of the transmission wheel 11 against the passive pressing piece 12 to apply the elastic member 13.

The reeling wheel 932, as shown in Figures 1 and 2, further includes a concentrically set ratchet disk 933, and a pawl member 934 that is mated and pivoted to the outer casing of the power unit 92.

Therefore, the above is an introduction to the improvement of each component and assembly method of the power-driven clutch device of the elevator of a preferred embodiment of the present invention. The actuation characteristics of the embodiment of the present invention are described below.

Referring to FIGS. 1-9, when the power unit 92 drives the clutch device 10 to perform a high load, the transmission grooves 116 of the transmission wheel 11 are abutted against the steep slope 1242 of the projections 124 of the passive pressing piece 12 by the steep wall surface 1162. Therefore, it has a larger fit The power transmission unit 92 has a large power-driven winding unit 93 to actuate, and the winding reel 932 is wound around the wire take-up body 95 so as to be able to smoothly carry the weight extension by interlocking the telescopic frame 91 (known in the art).

When the winding unit 93 (the passive shaft 931, the reel 932) is wound up in the line 95, when the reaction force is greater than the engaging force of the driving groove and the projection 124, the passive pressing piece 12 is driven to form a clutch, and the transmission is temporarily stopped. The power of the power unit 92. That is, each of the bumps 124 is disengaged from the respective transmission grooves 116 of the transmission wheel 11 by the slip (as shown in FIG. 7), and the driving wheel 11 is pushed to move the passive pressing piece 12 axially along the passive shaft 931, and is compressed. Elastic element 13. When the transmission wheel 11 is rotated to make the transmission groove 116 correspond to each of the projections 124 of the passive pressing piece 12, the engagement is again formed.

In addition, when the power unit 92 drives the power clutch device 10 to perform a low load operation, the transmission grooves 116 of the transmission wheel 11 are pressed against the gentle slope 1244 of the bumps 124 of the passive pressing piece 12 by the slow wall surface 1164, and the power of the power unit 92 is transmitted to the power unit 92. The winding unit 93 (the driven shaft 931, the reel 932) releases the wire body 95 wound in the reel disk 932, and the length of the telescopic frame 91 is recovered to the initial state (known art). Indeed

Please refer to the figures 1 to 3 and 9, but when the length of the telescopic frame 91 is recovered to the initial state, if the power unit 92 continues to operate the power clutch device 10 due to an erroneous operation, the reeling wheel 932 will be reversed. The wire take-up body 95; at this time, the wire 95 will push against the pawl member 934 due to the positional relationship, so that the pawl member 934 and the ratchet disk 933 form a hook, so that the winding unit 93 feeds back a reaction force to drive the clutch Device 10 forms a cooperative action. Since the transmission grooves 116 of the transmission wheel 11 are attached to the gentle slope 1244 of the projections 124 of the passive pressing piece 12 by the slow wall surface 1164, the engaging ability is weak, and the transmission wheel 11 and the passive pressing piece 12 are mutually slipped. Quickly clutch the power output from the power unit 92 to avoid erroneous actuation.

The above description is only for the preferred embodiment of the present invention, and is intended to clarify the features of the present invention, and is not intended to limit the scope of the present embodiment, and the average variation made by those skilled in the art according to the present creation. Changes that are well known to those skilled in the art, and still fall within the scope of this creation.

Claims (4)

A power-driven clutch device for an elevator, the power-driven clutch device being simultaneously connected to a winding unit and a power unit of the elevator, transmitting or clutching power of the power unit, comprising: a transmission wheel having a main ring tooth a shaft hole, a plurality of transmission grooves; the main gear ring is disposed along an outer circumferential surface of the transmission wheel and is driven by the power unit; the shaft hole is formed through the transmission wheel to provide one of the winding units a passive shaft extending; each of the transmission grooves is formed on the end surface of the transmission wheel, and has a steep wall surface and a slow wall surface on each side; a passive pressing piece having a spline hole and a plurality of bumps; The spline hole is formed through the passive pressing piece to provide one of the passive shafts, and each of the protruding blocks is matched with each of the driving grooves formed on the passive pressing piece to abut the driving wheel. An end surface, and each of the two sides of the bump corresponding to the steep wall surface and the slow wall surface respectively has a steep slope side and a gentle slope side; an elastic element is sleeved on the outer peripheral side of the passive shaft, and one end abuts the passive pressing piece, often The push tableting passive abutment with the transmission wheel; adjusting nut and a lock provided on a distal end of the driven shaft, the drive wheel constraint. The power-driven clutch device of the elevator of claim 1 is improved, wherein each of the transmission grooves has a fan-shaped profile and is annular. A power driven clutch device for an elevator as described in claim 2 Improved, wherein each of the bumps has a fan-shaped profile and is annular. The power-driven clutch device of the elevator of claim 3, wherein the winding unit comprises a reel that is contracted with the passive shaft, and further comprises a ratchet disc concentrically disposed on the reel, And a pawl member pivotally coupled to the ratchet disk and pivoted to the power unit.