This application claims the benefit of the Taiwan patent application No. 103120865, filed on Jun. 17, 2014, the entire contents of which are incorporated herein by reference.
1. Field of the Invention
The present invention relates to a column member for an elevating device, and more particularly to a column member provided for mounting a driving device to move the elevating device.
2. Description of Related Art
A conventional elevating device such as an elevator or parking equipment is pulled by a driving assembly to move upward and downward. The driving assembly has a driver and a cable. The cable is connected to the elevating device and the driver. The cable is prone to breaking and is not safe in use.
Therefore, the applicant invents an elevating device having a column member. The column member has a body, a channel and an opening The body has a front surface, a top surface, and a bottom surface. The channel is formed through the body and extends from the bottom surface of the body to the top surface of the body. The channel has an inner surface. The opening is formed in the front surface of the body and is in communication with the channel. The width of the opening is equal to the diameter of the channel. An internal thread is formed on the inner surface of the channel. A driving device is connected to the column member. The driving device has a shell and a rotating member. The shell is connected to the column member. The rotating member is mounted in the shell and engages with the internal thread of the column member.
In operation, the rotating member generates a horizontal component of force, and the width of the opening is equal to the diameter of the channel, so the shell may easily come off the column member. Therefore, multiple sliding elements are further mounted on the shell and hold the body of the column member to prevent the shell from coming off the body. The column member cannot hold the shell without the sliding elements.
To overcome the shortcomings, the present invention tends to provide a column member for an elevating device to mitigate or obviate the aforementioned problems.
The main objective of the invention is to provide a column member for an elevating device that can easily hold a rotating member of a driving device.
The column member for an elevating device has a body, a channel, an opening and an internal thread. The body has a front surface, a rear surface, a top surface, a bottom surface, and two side surfaces. The rear surface is opposite to the front surface. The bottom surface is opposite to the top surface. The channel is formed through the body and is connected to the top surface and the bottom surface of the body, and has an inner surface. The opening is formed in the front surface of the body and is in communication with the channel. The width of the opening is shorter than the diameter of the channel. The internal thread is formed on the inner surface of the channel.
A driving device is mounted on the column member, and a rotating member of the driving device is located in the channel and engages with the internal thread of the channel. The rotating member is rotated for moving upward and downward along the channel. Thus, the driving device moves upward and downward along the column member. The rotating member meshes with the internal thread of the channel and the diameter of the channel is longer than the width of the opening. The diameter of the rotating member is longer than the width of the opening. Therefore, the rotating member cannot come off the channel via the opening, and the rotating member is located in the channel firmly to prevent the driving device from coming off the column member and reduce the horizontal component of force generated by the rotating member. The column member easily holds the rotating member without any sliding elements, and the combination of the column member and the rotating member is safe.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
With reference to
In addition, the body has two grooves 14, multiple through holes 15 and multiple notches 16. The grooves 14 are formed in the side surfaces of the body 10 respectively. The through holes 15 are formed in the top surface and the bottom surface of the body 10 respectively. The notches 16 are formed in the rear surface of the body 10 and are in communication with the grooves 14 respectively. With reference to
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Accordingly, the width of the opening 12 is shorter than the diameter of the rotating member 44 to prevent the rotating member 44 from coming off the channel 11 via the opening 12. Thus, the rotating member 44 is located in the channel 11 firmly to prevent the driving device 40 from coming off the column member and reduce the horizontal component of force generated by the rotating member 44. The column member easily holds the rotating member 44 without any sliding elements, and the combination of the column member and the rotating member 44 is safe. In addition, multiple column members are easily connected by multiple connectors 30 and multiple first bolts 31, and the alignment precision between the multiple column members is improved.
Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Number | Date | Country | Kind |
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103120865 | Jun 2014 | TW | national |