TWI638341B - Fire alarm replacing device - Google Patents

Abstract

A fire alarm replacement device includes a rod body, a driving mechanism and a plurality of clamping members. The driving mechanism is disposed on the rod body and has a central shaft. The clamping members are coupled to the driving mechanism and are driven by the driving mechanism to synchronously approach or away from the central shaft to clamp a fire alarm.

Description

Fire alarm replacement device

The present invention relates to a fire alarm replacement device, and more particularly to a rotary drive mechanism having a relatively long length and a rod mounted on a shaft, so that a plurality of clamps can be synchronously moved to clamp the fire alarm. A fire alarm replacement device with a fire alarm can be removed.

Fire alarms for general homes, such as smoke detectors installed on the ceiling. When replacement is required, the user must first set up a ladder, then climb the ladder and manually disassemble the fire alarm and replace with a new set of fire protection. Alarm. In this way, it is very inconvenient to set up a ladder to perform the replacement operation.

The object of the present invention is to provide a fire alarm replacement device having a rod body of a considerable length, and then a rotary drive mechanism and a plurality of clamping members are erected on the rod body, and the rotation driving mechanism is used to drive the clamping member to move and clamp Fire alarm, then rotate and disassemble the fire alarm and replace it.

An embodiment of the fire alarm changer of the present invention includes a shaft, a drive mechanism, and a plurality of clamps. The driving mechanism is disposed on the rod body and has a central shaft. The clamping members are coupled to the driving mechanism and are driven by the driving mechanism to synchronously approach or away from the central shaft to clamp a fire alarm.

In another embodiment, each of the gripping members rotates about a rotational axis to simultaneously approach or move away from the central axis.

In another embodiment, the drive mechanism includes a frame, a sun gear, and a plurality of peripheral gears. The frame is fixed to the rod body, the central gear train is disposed on the frame, and is rotatable about the central axis, the peripheral gears are fitted to the sun gear, and each of the peripheral gear trains can be rotated by each The shaft rotates about a center of rotation, wherein the clamping members are respectively connected to outer circumferences of the peripheral gears. When the central gear rotates about the central shaft, the central gear drives the peripheral gears to rotate around the rotating shafts respectively. The clamping members are respectively rotated about the axes of rotation to simultaneously approach or move away from the central axis.

In another embodiment, each of the peripheral gears further includes a link extending in a radial direction of the peripheral gear, the clamp being fixed to the link.

In another embodiment, the clips are rod-shaped and extend in a direction parallel to the central axis.

In another embodiment, each of the clamping members has a gripping surface that forms a pattern that facilitates gripping.

In another embodiment, the fire alarm replacement device of the present invention further includes an electric motor having an output shaft coupled to a center of rotation of the sun gear to rotate the sun gear about the center shaft.

In another embodiment, the fire alarm replacement device of the present invention further includes a switch electrically connected to the electric motor to control activation, closing or rotation of the output shaft of the electric motor.

In another embodiment, the frame includes an upper half and a lower half, the sun gear and the peripheral gears being sandwiched between the upper half and the lower half.

In another embodiment, the rod system is telescopic.

The above and other objects, features, and advantages of the invention will be apparent from

Referring to Figures 1 through 4, an embodiment of a fire alarm device replacement device of the present invention is shown. The fire alarm replacement device 100 of the present invention includes a rod body 10, a drive mechanism 20, and a plurality of clamp members 30. The rod body 10 is cylindrical and has a plurality of sections to form a retractable structure, thereby replacing and disassembling the fire alarms at different heights. The driving mechanism 20 is disposed at the top end of the rod body 10 and has a central shaft CL, the clamping part 30 is connected to the driving mechanism 20, and is driven by the driving mechanism to synchronously approach or away from the central axis CL, and clamps a fire alarm A (refer to FIG. 9), and each clamping member 30 is respectively wound around a rotating shaft. The BL rotates while being close to or away from the central axis CL.

The drive mechanism 20 includes a frame 22, a sun gear 24, and a plurality of peripheral gears 26. The frame 22 is fixed to the rod body 10, the sun gear 24 is disposed on the frame 22, and is rotatable about a central axis CL. The peripheral gears 26 are fitted to the sun gear 24 and disposed around the sun gear 24, and each of the peripheral gears 26 can be The rotation of each of the rotation axes BL is respectively connected to the outer circumference of the peripheral gears 26. When the sun gear 24 rotates about the central axis CL, the sun gear 24 drives the periphery. The gears 26 are respectively rotated about the rotation axes BL such that the clamps 30 are rotated about the rotation axes BL to be synchronously approached or away from the central axis CL. In the present embodiment, the frame 22 includes an upper half 222 and a lower half 224. The sun gear 24 and the peripheral gears 26 are interposed between the upper half 222 and the lower half 224, and in this embodiment. The peripheral gear 26 is positioned between the upper half 222 and the lower half 224 by a fixing pin P1, and the center of rotation of the sun gear 24 is coupled to an output shaft 42 of an electric motor 40 to be described later. In addition, in the present embodiment, the sun gear 24 and the peripheral gear 26 are both spur gears, and the center gear 24 and the peripheral gear 26 are equal in diameter. In another embodiment, the sun gear 24 and the peripheral gear 26 may also be helical gears. And the diameter of the sun gear 24 may be greater than the diameter of the peripheral gear 26. In another embodiment, the diameter of the sun gear 24 may be smaller than the diameter of the peripheral gear 26. Each of the peripheral gears 26 has a connecting rod 262 extending in the radial direction of the peripheral gear 26, and the clamping member 30 is fixed to the connecting rod 262. In the embodiment, the clamping member 30 is bolted M. Fixed to the link 262. In addition, in the present embodiment, the holding member 30 has a rod shape and extends in a direction parallel to the central axis CL, and each of the holding members 30 has a clamping surface 32 formed on the clamping surface 32 for facilitating clamping. Pattern.

The fire alarming device replacement device 100 of the present invention further includes an electric motor 40. The output shaft 42 of the electric motor 40 is coupled to the center of rotation of the sun gear 24 to rotate the sun gear 24 about the central axis CL. The electric motor 40 is mounted in the rod body 10, and its output shaft 42 is coupled to the center of rotation of the sun gear 24 through the lower half 224.

The replacement device 100 of the fire alarm device of the present invention further includes a switch 50 electrically connected to the electric motor 40, for example, electrically connected to the electric motor 40 by a switch 50 cable to control the starting and closing of the electric motor 40. Or the direction of rotation of the output shaft 42.

Referring to FIGS. 5 and 6, when the user presses the switch 50 to activate the electric motor 40, the output shaft 42 of the electric motor 40 rotates to drive the sun gear 24 to rotate about the central axis CL, and the sun gear 24 drives the periphery. The gear 26 rotates about the individual rotation axis BL. Referring to FIGS. 7 and 8, the clamp member 30 rotates around the individual rotation axis BL to approach the central axis CL, thereby holding the fire alarm A, as in the ninth. As shown, the user then rotates the shaft 10 and thereby rotationally disassembles the fire alarm A held by the clamp member 30.

The fire alarming device replacing device 100 of the present invention holds the fire alarm A by rotating the moving member 30 by the driving mechanism 20, and thereby the rotating fire alarm A can be easily detached without using a ladder.

The present invention has been disclosed in the above embodiments, but it is not intended to limit the scope of the present invention. Any one of ordinary skill in the art to which the present invention pertains may make some changes without departing from the spirit of the invention. And the scope of the present invention is defined by the scope of the appended claims.

10‧‧‧ rod body

20‧‧‧ drive mechanism

22‧‧‧Frame

24‧‧‧Center gear

26‧‧‧ peripheral gears

30‧‧‧Clamping parts

40‧‧‧Electric motor

42‧‧‧ Output shaft

50‧‧‧ switch

100‧‧‧Fire alarm replacement device

222‧‧‧ upper half

224‧‧‧ Lower half

262‧‧‧ linkage

A‧‧‧Fire alarm

BL‧‧‧Rotary axis

CL‧‧‧ center axis

M‧‧‧ bolt

P1‧‧‧ fixed pin

Figure 1 is a front elevational view of an embodiment of a fire alarm replacement device of the present invention. Fig. 2 is a cross-sectional view showing the fire alarm replacing device of Fig. 1. Fig. 3 is a perspective view of the fire alarm replacing device of Fig. 1. Fig. 4 is an exploded perspective view showing the fire alarm replacing device of Fig. 3. Fig. 5 is a combination view of the driving mechanism, the holding member and the electric motor of the fire alarm replacing device of the present invention, wherein the holding member is away from the central axis. Figure 6 is a top view of Figure 5. Figure 7 is a combination view of the drive mechanism, the clamp member and the electric motor of the fire alarm change device of the present invention, wherein the clamp member is close to the central shaft. Figure 8 is a top view of Figure 7. Fig. 9 is a view showing the state of use of the fire alarm replacing device of the present invention.

Claims (6)

A fire alarm replacement device includes: a rod body; a driving mechanism disposed on the rod body and having a central shaft; and a plurality of clamping members coupled to the driving mechanism and driven by the driving mechanism And synchronously approaching or away from the central axis, and holding a fire alarm, each of the clamping members rotating around a rotating shaft and synchronously approaching or away from the central axis; wherein the driving mechanism comprises: a frame Fixed to the rod body; a sun gear disposed on the frame and rotatable about the central axis; and a plurality of peripheral gears fitted to the sun gear, each of the peripheral gear trains being respectively capable of The rotating shaft is rotated about a center of rotation, wherein the clamping members are respectively connected to outer circumferences of the peripheral gears, and when the central gear rotates about the central axis, the central gear drives the peripheral gears to rotate respectively Rotating the shaft such that the clamping members rotate about the rotating shafts to simultaneously approach or move away from the central shaft; wherein each of the peripheral gears further includes a connecting rod along the peripheral teeth Radially extending the gripping member fixed to the link; and such holding rod-shaped member and extending toward a direction parallel to the central axis. The fire alarm device replacement device of claim 1, wherein each of the clamping members has a clamping surface that forms a pattern for facilitating clamping. The fire alarm device replacement device of claim 1, further comprising an electric motor, the output shaft of the electric motor being coupled to the center of rotation of the sun gear to drive the center The gear rotates about the central axis. The fire alarm device replacement device of claim 3, further comprising a switch electrically connected to the electric motor to control activation, closing or rotation direction of the output shaft of the electric motor . The apparatus for replacing a fire alarm according to claim 1, wherein the frame includes an upper half and a lower half, and the sun gear and the peripheral gears are sandwiched between the upper half and the lower half. Between the ministries. The fire alarm device replacement device of claim 1, wherein the rod system is expandable and contractible.