JPS596847Y2 - Fixing device for racket frame in string tensioning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for fixing a racket frame in a stringing machine for stringing strings on racket frames for tennis and the like.

Conventionally, the racket frame fixing mechanism installed in a string tensioning machine consists of a pair of front and rear frame holder stands erected at both ends of a rotatable slide bar, and the upper end of the stand is attached to a U-shaped holder. By inserting and placing the top part and base part of the racket frame in this part of the holder, and moving down the pressing piece that is attached to the upper part of the holder part so as to be able to move up and down, the holder is Since the racket frame is supported and fixed by the upper surface of the lower frame and the pressing piece, in order to insert the racket frame into the holder, it is necessary to insert the racket frame into the opening of the holder, i.e. from the side. Therefore, it is necessary to rotate the slide bar until the open side of the holder is at a position where the racket frame can be inserted, which has the drawback that the work of fixing the racket frame is time-consuming. There have been drawbacks such as the fact that the fixable surface is relatively small, making it impossible to fix racket frames of different shapes.

In order to eliminate such drawbacks, the present invention has developed a frame holder stand that has a clamping pressure surface on its upper end surface, so that the holder can be detachably attached from either the inside or outside of the stand. A device for fixing a racket frame in a string tensioning machine is provided, which is characterized in that the racket frame is supported and fixed between a pressure piece and an upper end clamping surface of a frame holder stand.

To explain the drawings showing the embodiment, reference numeral 1 is an L-shaped holder integrally formed by bending the lower part of a round steel bar at right angles and integrally connecting a horizontal rod part 2b to the lower end of a vertical rod part 2a. The supporting rod 2 is shaped and a threaded portion 3 is provided on the outer peripheral surface of the vertical rod portion 2a.
Further, the vertical hole 5 of the clamping piece 4 passing through the vertical hole 5 in the center is inserted into the vertical rod part 2a so as to be vertically movable, and the screw part 3 on the upper side of the clamping piece 4 is fitted with a rotary knob. 6
The central screw holes of the two are screwed together.

Reference numerals 7 and 7' designate a pair of front and rear frame holder stands whose lower end rectangular cylindrical parts are slidably and fixedly arranged on both ends of the slider 8, respectively, and are flattened and have a horizontal upper end clamping pressure surface 9a at their upper ends. The head 9 is integrally formed, and a horizontal through hole 10 is bored at the lower end of the head 9 so as to be on the same center line and pass through between the inner and outer wall surfaces of the upper end. The diameter is set to a size that allows the horizontal rod portion 2b of the support rod 2 to be inserted and removed.

Reference numeral 11 denotes a long hole cut inward from the center of the end face of the flat enlarged head 9, which is provided in the same direction as the horizontal through hole 10 and serves as a guide for the vertical rod portion 2b of the support rod 2. be.

The slide par 8 is rotatably pivoted at its center to a bolt body 13 supported on a base 12, and can be rotated and fixed by rotating the handle 14.
A clamp mounting plate 16 having a long hole 15 is disposed in the upper part through the seat plate 17, and the bolt body 13 is inserted through the long hole 15, and the floor plate 17 and the head 1 are connected by rotating the handle 19.
It is designed to be supported and released after 8 months.

With this configuration, the upper end clamping surfaces 9 a , 9 a ra't of the front and rear frame holder stands 7, 7'
-g erect and place the racket frame a, and attach the horizontal rod portion 2b of the holder unit 1, 1 to the frame holder stand 7,
After inserting it into the horizontal through hole 10 of frame holder stand 7, 7', rotate the rotating knob 6 and press the upper surface of the clamping pressure piece 4, and the lower surface of the clamping pressure piece 4 and the upper end of the frame holder stands 7, 7' are clamped. Face 9
The base portion and top portion of the racket frame a are clamped and fixed between the racket frames a and 9a, respectively.

In addition, the lower surface of the clamping pressure piece 4 and the frame holder stand 7,
A buffer plate 19 made of leather or the like is provided on the upper surface of the upper end supporting surface 9a of 7'.
．． 20 is integrally attached to prevent the racket frame from being damaged during clamping.

As described above, in the present invention, the clamp pressure piece 4 is loosely fitted into the vertical rod part 2a of the L-shaped support rod 2, which is formed by connecting the horizontal rod part 2b to the lower end of the vertical rod part 2a, so that it can freely slide up and down. Vertical rod part 2
A rotary knob 6 is screwed onto the threaded part 3 shaped as shown in FIG. A horizontal through hole 10 is drilled through the horizontal through hole 10, and the horizontal rod portion 2b of the support rod 2 of the holder unit 1 is inserted into the horizontal through hole 10.
A racket frame in a string tensioning machine characterized in that the racket frame is configured to be inserted and removed in a freely insertable and removable manner so that the racket frame is held between the clamping pressure piece 4 of the holder unit 1 and the upper end clamping pressure surface 9a of the frame holder stand 7. Since it is related to a fixing device, the holder unit 1 is separate from the frame holder stand 7, so the racket frame can be placed on the frame holder stand 7 from any direction. The fixing work can be done quickly, and the horizontal rod part 2b of the support rod 2 of the holder integrated 1 is connected to the horizontal through hole 1 of the frame holder stand 7.
0, then screw the rotation knob 6 to press the clamping pressure piece 4 with the rotation knob 6, and press the racket frame between the clamping pressure piece 4 and the upper end clamping surface of the frame holder stand 7. Of course, it can be firmly clamped and fixed, and the holder is integrated 1
can be adjusted in and out by sliding its horizontal rod portion 2b against the horizontal through-hole 10 of the frame holder stand 7, allowing accurate support according to the shape of the racket frame. 10 penetrates between the inner and outer surfaces of the frame holder stand 7, so the holder unit 1 can be mounted from either the inside or the outside of the frame holder stand 7. Therefore, the shape of the racket frame, especially the shape of the base part, can be varied. Even if the pressure is different,
It has features such as being able to be fixed and being highly versatile.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a simplified perspective view showing the overall structure of a string tensioner, FIG. 2 is a perspective view of a racket frame fixing device, FIG. 3 is a vertical sectional view thereof, and FIG. 4
The figure is a simplified side view showing a state in which the racket frame is fixed, and FIG. 5 is a sectional view of the main parts in FIG. 1. 1...Holder integrated, 2...Support rod, 2
a...Vertical rod part, 2b...Horizontal rod part,
3... Thread part, 4... Clamp pressure piece, 6...
... Rotating knob, 7 ... Frame holder stand, 9 ... Upper end clamping pressure surface, 10 ...
Horizontal through hole.

Claims (1)

[Scope of utility model registration request] The L-shaped support rod 2 has a horizontal rod portion 2b connected to the lower end of the vertical rod portion 2a, and the clamp pressure piece 4 is loosely fitted into the vertical rod portion 2a so as to be vertically slidable. A rotary knob 6 is screwed onto the threaded part 3 that has been drilled out to form the holder 1, while a frame holder stand 7 on which the base part of the racket frame is placed is inserted into the upper end of the frame holder stand 7 and extends between the inner and outer surfaces. A horizontal through-hole 10 is drilled, and the horizontal rod part 2b of the support rod 2 of the holder unit 1 is inserted into the horizontal through-hole 10 in a removable manner to connect the supporting piece 4 of the holder unit 1 and the frame holder stand 7.
A racket frame fixing device for a string tensioning machine, characterized in that the racket frame is supported between upper end clamping pressure surfaces 9a of the racket frame.