JPS59163300A - Lifting type turntable - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevating rotary table, and its purpose is to use a simple device and one motor to simultaneously rotate and raise and lower the rotary table.

That is, in the present invention, when the cylindrical elevating legs protruding from the lower surface of the elevating table are fitted and supported by the cylindrical guide legs established on the base, spiral grooves are formed in the sliding movement of the two legs, so that the two legs touch each other. A ring-shaped gear that is fitted and engaged with a drive pinion on the base and on the outer periphery of the guide leg is rotatably supported,
An upper frame is supported by the gear via a number of connecting rods, and the upper frame and the gear can be moved up and down, and the lower frame fixed to the elevating legs is fitted and supported by the connecting rods. The gist is:

The darkness will be explained below based on the illustrated embodiment.

In the figure, reference numeral 1 denotes a base that is installed and fixed on a floor improvement temple, and on the base 1 there is a gear holder 3 that supports the inner peripheral surface of a ring-shaped gear 2, and a gear holder 3 that supports the inner peripheral surface of a ring-shaped gear 2. Cylindrical guide 4 on the circumferential side
Connecting rods 5 are provided protruding from the outer periphery of the upper surface of the gear 2, which is rotatably supported by the gear receiver 3, at regular or arbitrary intervals. A large number of connecting rods 5 are arranged so as to surround the outer periphery of the guide leg 4 at required intervals, and a ring-shaped upper frame 6 is provided at the upper end of the connecting rod 5. It is only fixed to the rod 5. Further, a ring-shaped lower frame 7 having the same shape as the upper frame is disposed between the upper frame 6 and the gear 2, and each of the connecting rods 5 passes through this lower frame 7, and the connecting rods 5 are connected to each other. The upper limit of the upper frame is the upper frame, and the upper limit of the lower limit is the upper frame, and the upper limit of the lower limit is the upper frame. A cylindrical elevating leg 8 is fitted onto the outer periphery of the guide 4 in an inner and outer two-way configuration so that it can be raised and lowered and rotated freely. In addition, an elevating table 9 having a shape depending on the state of use is provided, and an upper frame 6 is supported around the outer periphery of the cylindrical elevating leg so that the elevating leg can move together.

In addition, a spiral groove 4 is formed on the outer periphery of the guide leg 4 that serves as the inner cylinder.
A spiral groove 8a is also carved on the inner peripheral surface of the elevating leg 8, and the pitches of the two spiral grooves 4a and 8a are matched to form both grooves 4a. A large number of steel balls 10 are fitted between the spiral grooves 8a, and the inner and outer guide legs and the elevating legs are screwed together by the spiral grooves and the steel balls, and the number of spirals and the pitch of the spiral grooves 4a and 8a are The predetermined number of rotations per lift of the elevating table and the predetermined number of turns of the elevating table are determined in advance so that the elevating table is raised and lowered from the lowered position to the raised position. In addition to the spiral groove and the steel ball, the inner and outer guide legs and the lifting legs may be screwed together using a screw type at the above-mentioned spiral pitch and number of times. A pinion 12 driven by a motor 11 installed on the base 1 is meshed with the gear 2.

The operation of the apparatus constructed as described above will now be described. When the pinion 12 is rotated in the forward rotation direction by the drive of the prime mover, the gear 2 meshed with this pinion rotates. Since this gear 1 has a large number of connecting rods 5 established therein, the rotation of the gear is transmitted to the connecting rods, and the lower frame 7 fitted onto the rods also rotates. As a result, when the elevating legs fixed to the lower frame rotate, the spiral grooves 4a and 8a and the steel ball 1 fitted between the grooves
0, the lifting platform 9 at the upper end of the lifting leg rotates and rises, and rotates only to the set raised position and only at the set number of rotations. Further, when the pinion is reversely rotated by the prime mover, the platform is rotated in the same manner as when it was raised, and in the opposite direction to that when it was raised, and is rotated and lowered to the lowered position.

The lifting platform 9 is equipped with a board or a large number of rollers, or even a device that is ready for use.When using this platform as a bed, a mat 16 is placed on the platform 9. It is either placed or fixed, and the size of the lifting platform is appropriate for the purpose.

According to the present invention, a gear is engaged with a pinion that can be driven in forward and reverse directions by a single prime mover, and a lifting leg is provided to this gear via a connecting rod, and the guide leg fitted in the main body is connected to the gear. Since spiral grooves are formed on each of the lifting legs, and problems are caused between the grooves, the lifting platform can be lowered while turning the set number of times only by rotating the pinion in the forward and reverse directions.The structure is simple and the operation is simple. It has the advantage of being reliable.

[Brief explanation of drawings]

Figure 1 is a front view, Figure 2 is a front view when the platform is ascending, Figure 6 is a plan view, Figure 4 is an enlarged front view with a part of the main part cut away, and Figure 5 is a cross section of the same. Figure 6 is an enlarged cross-section, and Figure 7 is an enlarged cross-section.
The figure is a perspective view of the spiral groove. 1... Base 2... Gear 3... Gear receiver 4... Guide legs 4a, 8a... Groove 5... Connecting rod 6... Upper frame 7... Lower frame 8 ... Lifting leg 9 ... Lifting platform 10 ... Steel ball 11 ... Prime mover 12 ... Pinion 13 ... Matte Applicant Kanehoku Co., Ltd. Agent Hayashi Yumei and 1 other person Zf-'1 □ ≦4' lf

Claims (4)

[Claims] (1) The cylindrical elevating legs protruding from the lower surface of the elevating table are fitted into and supported by the cylindrical guide legs established on the base, and spiral grooves are formed on the sliding surfaces of both legs so that they fit into each other. At the same time, a ring-shaped gear is rotatably supported on the base by a drive pinion on the outer periphery of the kite leg, and the upper frame is supported on the gear via a large number of connecting rods. , an elevating rotary table in which the upper frame and the gears are movable up and down, and the lower frame fixed to the elevating legs is fitted and supported by connecting rods. (2) Spiral grooves are formed in the sliding movement of the lifting legs and guide legs that are fitted into each other, and a ball is fitted between the spiral grooves of the opposing legs. Claim 1 Elevating rotary table as described in section. (3) An elevating rotary table according to claim 1, characterized in that square screws are formed in the sliding movement of the elevating and descending legs and the guide legs that are fitted into each other and are screwed together. (4) The elevating rotary table according to claim 1, characterized in that trapezoidal threads are formed on the sliding surfaces of the elevating and descending legs and the guide legs that are fitted into each other and are screwed together.