JP5425235B2 - Clip for ball - Google Patents

Description

  The present invention relates to a ball clip, and more particularly to a ball clip that controls the clip force based on the principle of leverage.

  As shown in FIG. 10, the conventional ball clip includes a base 6 and a plurality of support arms arranged annularly on the base 6. The support arm is an elastic plate 7 that can be deformed and restored, and is formed in a clip portion 71 that has one end fixed to the base 6 and the other end aimed at the ball 8 that contacts the inside facing each other on the elastic plate 7. Is done. When the ball 8 is placed inside the elastic plate 7 facing each other, the ball 8 pushes out the elastic plate 7. At this time, the elastic plate 7 generates a restoring force and fixes the ball 8 with the ball 8 at the center.

In the conventional technique, the magnitude of the restoring force for sandwiching the ball 8 by the elastic plate 7 is determined by the material of the elastic plate 7. However, when the product is finished, the elastic plate 7 is already fixed and cannot be adjusted flexibly, so it is very inconvenient when used with the ball in between.
The present invention refers to the claw structure described in FIGS. 10 to 13 of Patent Document 1 as a prior art.

US Patent Application Publication No. 2003/0151202

  In order to solve the above-mentioned problem, the present invention makes the compression unit abut on the hook portion at the end of the support arm by tightening the nut to the bolt, and at the same time, the top end of the support arm is rotated inward based on this principle. It is a main object of the present invention to provide a ball clip capable of causing a clipping operation.

  The present invention is for a ball capable of automatically centering a ball by generating two small free rotations in a rotating seat on the support arm by a biaxial simultaneous rotation mechanism arranged at the top end of the support arm. Another purpose is to provide clips.

The present invention includes a base, a plurality of support arms, and a plurality of biaxial simultaneous rotation mechanisms. Group seat has a top surface, a bottom surface, the shaft, the tension unit and the elastic unit is penetrated to the shaft. The shaft has a stopper formed at the top. The tension unit has a top surface and a bottom surface, and is movable up and down along the axis by the control of the adjusting mechanism. As for an elastic unit, a bottom part contacts the top face of a tension unit, and a top part contacts the bottom face of a stopper. The base seat has a plurality of connection seats formed at regular intervals around the base seat. Each of the plurality of support arms has a transmission portion, a clip portion, and a connection portion mounted between the transmission portion and the clip portion. The support arm is connected to the connection seat around the base seat by the connection portion, and controls the tension unit by contacting the bottom surface of the tension unit by the transmission portion. When descending along the axis, the tensioning unit pushes the transmission and the support arm rotates inward, causing a clip action on the ball located inside the support arm. The plurality of biaxial simultaneous rotation mechanisms are attached to the clip portion of the support arm. The support arm has a pair of auxiliary arms formed extending from the clip portion to the left and right, and a first shaft hole formed to face the pair of auxiliary arms. The biaxial simultaneous rotation mechanism has a first shaft, a second shaft, and a rotary seat. The first shaft is inserted laterally into the first shaft holes of the two auxiliary arms and has a second shaft hole in the vertical direction. The rotary seat has a first side and a second side facing each other, and has a holder fixed to the first side for use in contact with the ball, and a connecting portion formed to protrude to the second side. doing. The connecting portion has a third axial hole in the vertical direction. The rotary seat is attached to the clip portion of the support arm so that the first sides face each other. The connecting portion is fitted between the two auxiliary arms of the support arm. The second shaft connects the rotary seat and the first shaft by passing through the third shaft hole of the rotary seat and the second shaft hole of the first shaft. The two auxiliary arms of the support arm have elastic pieces at the top. The rotating seat can cause a rotation with a small width in the lateral direction and the longitudinal direction in the support arm.

It is a perspective view which shows the clip for balls by 1st Embodiment of this invention. It is an exploded view showing the clip for balls by a 1st embodiment of the present invention. It is an exploded view showing the clip for balls by a 1st embodiment of the present invention. It is an exploded view showing the clip for balls by a 1st embodiment of the present invention. It is sectional drawing of the vertical direction which shows the clip for balls by 1st Embodiment of this invention. It is sectional drawing which shows the state which the clip operation | movement of a support arm advances in the clip for balls by 1st Embodiment of this invention. It is sectional drawing which shows the state which the rotation seat rotates in the vertical direction in the clip for balls by 1st Embodiment of this invention. It is a top view which shows the state in which the rotation seat rotates to the horizontal direction in the clip for balls by 1st Embodiment of this invention. It is a schematic diagram which shows a part of clip for ball | bowl by 2nd Embodiment of this invention. It is a perspective view which shows the conventional clip for balls.

Hereinafter, a ball clip according to the present invention will be described with reference to the drawings.
(First embodiment)
The ball clip according to the first embodiment of the present invention includes a base 1 and three support arms 3.

  As shown in FIGS. 3 and 5, the base 1 has a top surface 11, a bottom surface 12, and perforations 13 that penetrate the top surface 11 and the bottom surface 12. The shaft is inserted into the bore 13. In the present embodiment, the shaft is the bolt 2. The bolt 2 has a compression unit 21 mounted so as to penetrate the bolt 2 from a position above the top surface 11 of the base 1, an elastic unit, and a stopper 23 fixed to the top. The tension unit 21 has a top surface 211 and a bottom surface 212. In the present embodiment, the elastic unit is a disc-shaped spring 22 whose bottom is in contact with the top surface 211 of the compression unit 21 and whose top is in contact with the bottom surface of the stopper 23. The bolt 2 has a nut 24 disposed below the bottom surface 12 of the base 1 so as to contact the bottom surface 12 of the base 1. When the nut 24 moves upward while rotating the nut 24, the nut 24 abuts against the bottom surface 12 of the base 1, so that the bolt 2 interlocks with the stopper 23 and lowers and the tension unit 21 is moved to the bolt 2. Descent along. Further, the base 1 has a plurality of connection seats 14 formed around the periphery at uniform angles. In the present embodiment, three connection seats 14 are taken as an example.

  As shown in FIGS. 2 and 5, the three support arms 3 each have a transmission portion 31, a clip portion 32, and a connection portion 33 that is mounted between the transmission portion 31 and the clip portion 32. The support arm 3 is connected to a connection seat 14 around the base seat 1 by a connection portion 33. The transmission portion 31 of the support arm 3 contacts the bottom surface 212 of the tension unit 21. At this time, as shown in FIG. 6, if the nut 24 is turned and the tension unit 21 is lowered along the bolt 2, the tension unit 21 pushes the transmission portion 31, and the support arm 3 moves inward with the connection portion 33 as an axis. Rotates and causes a clip action on the ball located inside the support arm 3 opposite. On the other hand, as shown in FIGS. 3 and 5, in the present embodiment, the bottom surface 212 of the compression unit 21 has an inclined groove 213 having an appropriate depth at a portion corresponding to the transmission portion 31 of the support arm 3. The transmission portion 31 of the support arm 3 enters the inclined groove 213 and simultaneously contacts the inclined groove 231 to change the inclination of the support arm 3.

  As shown in FIG. 6, according to the present invention, the nut 24 is turned based on the lever principle to push the transmission unit 31 of the support arm 3 by lowering the tensioning unit 21, and the connection portion 33 of the support arm 3 is moved. By rotating around the shaft, a clip action is generated on the ball 5 located inside the support arm 3 facing each other. On the other hand, the clip force of the support arm 3 can be adjusted by turning the nut 24 to change the angular position. Further, as the distance by which the nut 24 is turned to lower the tension unit 21 is increased, the angle at which the clip portion 32 of the support arm 3 rotates inward increases, whereas the clip force generated on the ball increases. Since the ball is a precision machine that may be damaged if the clip force is too large, the present invention provides a shock absorbing structure for the disk-like spring 22 positioned between the compression unit 21 and the stopper 23 when the nut 24 is rotated. In addition, even when the ball 5 is sandwiched, flexibility can be maintained.

  As shown in FIGS. 2 and 4, the support arm 3 further includes a biaxial simultaneous rotation mechanism 4 disposed in the clip portion 32, a pair of auxiliary arms 34 formed by extending from the clip portion 32 to the left and right, And the first axial hole 341 formed so as to face each other. The biaxial simultaneous rotation mechanism 4 has a first shaft 41, a second shaft 42 and a rotating seat 40. The first shaft 41 is inserted into the first shaft holes 341 of the two auxiliary arms 34 in the lateral direction and has a second shaft hole 411 in the vertical direction. The rotary seat 40 has a holder 401 fixed to one side and a connection portion formed to protrude to the other side. The holder 401 corresponds to the ball and is in close contact with the ball. In the present embodiment, the connection portion is composed of a protruding portion 402 facing up and down. The protrusion 402 has a third axial hole 403 in the vertical direction. The holder 401 of the rotary seat 40 is attached to the clip portion 32 of the support arm 3 so as to face each other. The two protrusions 402 are fitted between the two auxiliary arms 34 of the support arm 3 and are provided so as to be positioned on both upper and lower sides of the first shaft 41. The second shaft 42 connects the rotary seat 40 and the first shaft 41 by passing through the third shaft hole 403 of the two protrusions 402 of the rotary seat 40 and the second shaft hole 411 of the first shaft 41. On the other hand, the two auxiliary arms 34 of the support arm 3 have an elastic piece 43 at the top.

  In the biaxial simultaneous rotation mechanism 4 described above, the rotary seat 40 can not only rotate in the longitudinal direction around the first shaft 41 in the clip portion 32 of the support arm 3 as shown in FIG. 7, but also as shown in FIG. The second shaft 42 can be rotated laterally about the axis. Since the rotation in the vertical direction and the rotation in the horizontal direction are limited by the auxiliary arms 34 located on the left and right sides of the two protrusions 402 and the upper elastic piece 43, the rotation width is small. The elastic piece 43 can provide flexibility to the biaxial simultaneous rotation mechanism 4.

When using the biaxial simultaneous rotation mechanism 4, the three support arms 3 jointly hold the ball by the holder 401. When the ball is not located at the center point, the clip force generated on the three support arms 3 does not match in the process in which the clip operation proceeds to the ball. Therefore, the resultant force obtained by combining the three forces does not become zero. Is moved in the direction of the resultant force. When the ball moves, the rotary seat 40 automatically finely adjusts the angle by the biaxial simultaneous rotation mechanism 4 and the holder 401 corresponding to the shape of the ball, and the resultant force obtained by synthesizing the clip forces of the three support arms 3 is zero. The position of the ball can be adjusted until When the clip force of the three support arms 3 becomes zero, the ball is moved to the center position and the aim is automatically adjusted to the center.
(Second Embodiment)

As shown in FIG. 9, the difference between the second embodiment and the first embodiment of the present invention is as follows. There is a difference in a method in which the stopper 23 is interlocked by controlling the bolt 2 and the tension unit 21 is lowered. In the second embodiment, the bolt 2 has a transmission device such as a gear or a belt ring disposed below the bottom surface 12 of the base 1. The second embodiment employs the gear 25 as a transmission device. The gear 25 abuts against the bottom surface 12 of the base 1 and has a power transmission device such as a motor 26. The motor 26 has a transmission shaft 261 having teeth that mesh with the gear 25. When the transmission shaft 261 of the motor 26 rotates, the gear 25 is driven. As described in the first embodiment, when the gear 25 comes into contact with the bottom surface 12 of the base 1 and the bolt 2 is lowered, the support arm 3 performs a clip operation. In the second embodiment, not only the support arm 3 can be automatically controlled by the rotation of the motor 26, but also another precision sensor is mounted to measure the force required for pinching the ball, and the rotation of the motor 26 based on the electronic signal. The support arm 3 can be controlled more smoothly by controlling the movement accurately and automatically.
With the above-described contents, the features and effects that can be achieved according to the present invention are as follows.

  1. In the present invention, based on the lever principle, the nut 24 rotates on the bolt 2, or the motor 26 drives the gear 25 to push the transmission unit 31 of the support arm 3 by lowering the tension unit 21. be able to. In addition, by rotating the connecting portion 33 of the support arm 3 about the axis, a clip operation can be generated on the balls located inside the support arm 3 facing each other. And the clipping force of the support arm 3 can be adjusted by rotating the nut 24 or driving the gear 25 to produce an angle and position shift.

2. According to the present invention, the disc-shaped spring 22 positioned between the stopper 23 and the tensioning unit 21 can be deformed to provide flexibility to the clip, thereby preventing the ball from being pinched and damaged.

  3. In the present invention, when the position of the ball is shifted, the resultant force obtained by synthesizing the clipping force of the three support arms 3, two free rotations of the biaxial simultaneous rotation mechanism 4 on the three support arms 3, and the shape of the ball With the holder 401 corresponding to, the aim is automatically adjusted to the center, and the ball can be adjusted to be positioned at the center position.

DESCRIPTION OF SYMBOLS 1 ... Base seat 11 ... Top surface 12 ... Bottom surface 13 ... Perforation 14 ... Connection seat 2 ... Bolt 21 ... Tension unit 211 ··· Top surface 212 ··· Bottom surface 213 ··· Inclined groove 22 ··· Disc spring 23 ··· Stopper 24 ··· Nut 25 ··· Gear 26 ··· Motor 261 ··· · Transmission shaft 3 ··· Support arm 31 ··· Transmission portion 32 ··· Clip portion 33 ··· Connection portion 34 · · · Auxiliary arm 341 · · · First shaft hole 4 ···・ ・ ・ Two-axis simultaneous rotation mechanism 40 ・ ・ ・ Rotational seat 401 ・ ・ ・ Holder 402 ・ ・ ・ Projection 403 ・ ・ ・ Third shaft hole 41 ・ ・ ・ First shaft 411 ・ ・ ・ Second shaft hole 42 ··· Second shaft 43 ··· Elastic piece 5 ··· Ball

Claims (5)

The base,
A plurality of support arms;
A plurality of two-axis simultaneous rotation mechanisms,
The group seat has a top surface, a bottom surface, the shaft, the tension unit and the elastic unit is penetrated to the shaft,
The shaft has a stopper formed on the top;
The tension unit has a top surface and a bottom surface and is movable up and down along the axis by control of an adjustment mechanism;
The elastic unit has a bottom portion that abuts on the top surface of the tension unit, and a top portion that abuts on the bottom surface of the stopper,
The base has a plurality of connection seats formed at regular intervals around the angle,
Each of the plurality of support arms has a transmission portion, a clip portion, and a connection portion mounted between the transmission portion and the clip portion,
The support arm is connected to the connection seat around the base seat by the connection portion, and controls the compression unit by contacting the bottom surface of the compression unit by the transmission portion,
When descending along the axis, the tensioning unit pushes the transmission, the support arm rotates inward, causing a clip action on the ball located inside the support arm,
The plurality of biaxial simultaneous rotation mechanisms are attached to the clip portion of the support arm,
The support arm has a pair of auxiliary arms formed extending from the clip part to the left and right, and a first shaft hole formed to face the pair of auxiliary arms,
The biaxial simultaneous rotation mechanism has a first shaft, a second shaft, and a rotary seat,
The first shaft is inserted laterally into the first axial holes of the two auxiliary arms and has a vertical second axial hole,
The rotary seat has a first side and a second side facing each other, and a holder fixed to the first side for use in contact with a ball, and a connection formed to project to the second side Part
The connecting portion has a third axial hole in the vertical direction,
The rotating seat is attached to the clip portion of the support arm so that the first sides face each other,
The connecting portion is fitted between the two auxiliary arms of the support arm,
The second shaft connects the rotary seat and the first shaft by passing through the third shaft hole of the rotary seat and the second shaft hole of the first shaft,
The two auxiliary arms of the support arm have an elastic piece at the top,
The ball clip according to claim 1, wherein the rotary seat is capable of rotating with a predetermined width in a lateral direction and a longitudinal direction in the support arm. The base further comprises perforations extending through the top and bottom surfaces;
The shaft is a bolt inserted into the bore;
The adjusting mechanism is a nut;
The ball clip according to claim 1, wherein the nut is fastened to the bolt and abuts below a bottom surface of the base seat. The base further comprises perforations extending through the top and bottom surfaces;
The shaft is a bolt inserted into the bore;
The adjustment mechanism has a power transmission device and a transmission device,
The transmission is fastened to the bolt and abuts below the bottom surface of the base,
The ball clip according to claim 1, wherein the power transmission device is capable of driving the transmission device and moving the bolt up and down. The power transmission device is a motor;
The ball clip according to claim 3, wherein the transmission device is one of a gear and a belt ring. The bottom surface of the tension unit has an inclined groove in a portion corresponding to the transmission portion of the support arm,
The ball clip according to claim 1, wherein the transmission portion of the support arm enters and contacts the inclined groove.

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