JP3209938U - Racket string machine fixed clamp - Google Patents

Abstract

The present invention provides a fixed clamp for a racket string machine. A fixed clamp of a racket string machine includes a fixed clamp unit, a tight latch unit, an adjustment ring 3, a joining pin 4, and a backstop structure 5. The fixed clamp unit includes a main body 11 and a sandwiching pedestal that correspond to each other. A plurality of first claw portions 112 project from the upper end of the main body, and a plurality of second claw portions project from the upper end of the sandwiching pedestal. The two claw portions are respectively adjacent to the rear ends of the first claw portions, and the fixed clamp unit is formed with a clamping port between the first claw portion and the second claw portion. The tight latch unit is composed of an abutment block and a handle. The abutment block is adjacent to the rear end of the clamping pedestal, the front end of the handle is movably connected to the abutment block, and the front end of the handle is in contact with the rear end of the main body. The adjustment ring is movably installed at the front end of the main body. The joining pin is pivoted through the main body and the holding pedestal, the joining pin end is screwed to the adjustment ring, and the joining pin is pivoted to the contact block. [Selection] Figure 3

Description

  The present invention relates to a racket string machine, and more particularly to a fixed clamp of a racket string machine.

  In tennis rackets and badminton rackets, elastic racket strings are woven vertically and horizontally into an annular racket frame to form a stretched net-like striking surface, and the degree of tension of the striking surface varies depending on the player's individual habits. When the racquet string is woven, the degree of tension of the striking surface is determined by the force that stretches the racquet string, and the racquet string can be easily knitted by the numerical value of the tensile stress generated while the racquet string is tightly stretched, In addition, by accurately controlling the numerical value of the tensile stress of the racket string, the racket stringing operation can be performed using the racket string machine.

  When the racket is threaded, the racket string is wound around each thread stage in the racket frame, a tension is formed by the winch of the string machine's thread drawing system, and the tension generated by pulling the thread stage After the stress rises to the required value, the yarn stage is clamped by a fixed clamp, the tensile stress of the yarn stage is maintained, and it is used for the winch operation of the subsequent yarn stage. Generally, the racket string used for tennis racket and badminton racket is different, tennis racket racket string is thick and badminton racket racket string is thin, so the fixed clamp is matched to the fiber diameter of the racket string Therefore, the width of the clamping mouth must be adjusted. A racket string with a different fiber diameter can also be clamped by using a narrow clamping port, but there is a possibility that the racket string with a thick fiber diameter may be damaged, which has an effect on the strength of the racket string. In addition, a racket string having a thin fiber diameter could not be effectively clamped with a wide clamping port.

  The fixed clamp of the racket string machine described in Patent Document 1 mainly includes a fixed clamp unit, a tight latch unit, a connecting column, and an adjustment ring seat. The fixed clamp unit includes two mating bodies and a clamping pedestal for sandwiching two springs therein, and the tight latch unit has an operating handle that moves up and down, and two steels by the tight latch unit. The ball and the spring are sandwiched and contacted with the clamping base of the fixed clamp unit. The fixed clamp unit has two adjustment plugs for adjusting the forward / backward movement of the clamp base of the fixed clamp unit, the connection column is connected to the fixed clamp unit and the tight latch unit, and the adjustment ring seat is connected to the fixed clamp unit. Screwed into the rear side, it is used to adjust the clamping degree of the main body of the fixed clamp unit and the clamping base.

Taiwan Utility Model No. 417495

  A clamping port for passing the racket string is formed between the main body and the clamping pedestal, and the connecting strut guides and moves the abutment block of the tight latch unit by the rotation of the adjustment ring seat, thereby adjusting the fiber diameter of the racket string. In addition, the width of the clamping port is adjusted. In the process in which the racket string is woven into the frame of the racket and the ball striking surface is formed, the operation handle is repeatedly operated many times, and thereby the pinch of the racket string and the release of the pinch to the yarn stage are executed. The However, when the racket string is clamped with respect to the main body and the holding pedestal, a resistance force is formed on the main body and the holding pedestal of the racket string, so that the adjustment ring seat and the connecting column gradually open, and the width of the holding port Gradually expanded. Therefore, in the process of threading work, the adjustment ring seat must be rotated in a timely manner to adjust the width of the holding port so that the main body and the holding base can effectively hold the racket string. It became complicated.

  Therefore, the present inventor considered that the above-described drawbacks can be improved, and as a result of intensive studies, the present inventor has arrived at a proposal of the present invention that effectively improves the above-described problems with a rational design.

  The present invention has been made in view of such conventional problems. In order to solve the above-mentioned problems, the present invention has as its main object to provide a fixed clamp for a racket string machine.

  In order to solve the above-described problems and achieve the object, a fixed clamp of a racket string machine according to the present invention includes a fixed clamp unit, a tight latch unit, an adjustment ring, a joining pin, and a backstop structure. The fixed clamp unit includes a main body and a holding base that correspond to each other, and two first springs are installed between the main body and the holding base. A plurality of first claw portions protrude from the upper end of the main body, a plurality of second claw portions protrude from the upper end of the holding pedestal, and each second claw portion is adjacent to the rear end of each first claw portion. . The fixed clamp unit is formed with a clamping opening between the first claw portion and the second claw portion, and the tight latch unit includes a contact block and a handle. The abutment block is adjacent to the rear end of the clamping pedestal, the front end of the handle is movably connected to the abutment block, and the front end of the handle abuts the rear end of the main body. The adjustment ring is movably installed at the front end of the main body, the joint pin is pivotally penetrated through the main body and the holding pedestal, the joint pin end is screwed into the adjustment ring, and the joint pin is pivoted at the contact block.

  Further, the first convex portion protrudes from the front edge of the main body, the first convex portion penetrates the first through hole in the lateral direction, and the adjustment ring forms a plurality of tooth tip circles on the annular outer periphery and is adjacent to the first convex portion. A root circle is formed between the tip circles.

  The backstop structure further includes a backstop member, a pivot, a second spring, a socket set screw, and a support member, and the main body is pivotably penetrated through the backstop member. As a result, the backstop member reciprocally rotates, the embedded buckle portion protrudes from the backstop member, and the end of the embedded buckle portion is fitted to the root circle on the outer periphery of the adjustment ring and the first Abutting on the tip circle adjacent to the convex portion, this restricts rotation of the adjustment ring in one direction, the socket set screw is screwed into the first through hole, and the support member is inserted into the first through hole. One end of the support member is in contact with the socket set screw, one end of the second spring is in contact with the outside of the embedded buckle portion of the backstop member, and the other end is in the first through hole. The second spring is brought into contact with the support member and is adjacent to the cap so that the embedded buckle is in contact with the adjustment ring. .

  In the above-described fixed clamp of the racket string machine, the second convex portion further protrudes from the front edge of the main body, the first convex portion and the second convex portion face each other in the lateral direction, and the second convex portion is the second convex portion. An annular limiting portion is formed so that the through hole penetrates in the lateral direction and the inside of the second through hole is adjacent to one end of the first convex portion. The backstop structure includes a backstop member, a pivot, a second spring, a socket set screw, and a support member, and the pivot is screwed into the main body so as to be pivotably penetrated through the backstop member. Is done. As a result, the backstop member performs reciprocal rotation, and the embedded buckle portion protrudes from the backstop member, and the end of the embedded buckle portion is fitted to the root circle on the outer periphery of the adjustment ring and directed toward the first convex portion. To abutment circles adjacent to each other. As a result, the rotation of the adjusting ring in one direction is restricted, the socket set screw is screwed into the first through hole, the support member is installed in the first through hole, and one end of the support member is in contact with the socket set screw. One end of the second spring is in contact with the outside of the embedded buckle portion of the backstop member, and the other end is inserted into the first through hole and is covered with the support member. Further, the second spring is brought into contact with the support member, and the socket set screw is adjacent to the cap so that the embedded buckle portion is held in contact with the adjustment ring.

  The backstop structure further includes a push rod and a third spring, the backstop member is installed between the first convex portion and the second convex portion, the push portion further protrudes from the backstop member, and the embedded buckle portion is The head part is located close to the first convex part, the push part is brought close to the second convex part, the push rod is pivotally attached to the second through hole, one end of the push rod is used as an operating end, and the other end is expanded. The working end is in contact with the outside of the push portion of the backstop member, the other end of the head portion is projected to the outside of the main body, and the push rod is a C-type buckle between the working end and the second convex portion. So that the push rod is positioned on the second convex portion, the third spring is pivotally attached to the second through hole, and the push rod is pivoted to the third spring, and one end of the third spring is In contact with the tough, and the other end is in contact with the head portion.

  According to the present invention, the backstop structure prevents the adjustment ring from rotating during the threading operation, and increases the reliability with which the fixed clamp holds the racket string.

1 is an external perspective view showing a preferred embodiment of the present invention. It is an expanded view of the inclination which shows preferable embodiment of this invention. In preferable embodiment of this invention, it is a front view which shows the state which removes a cover. It is an enlarged view of the part which shows the adjustment ring and backstop structure shown in FIG. FIG. 5 is a sectional view taken along line 5-5 shown in FIG. 3. In a preferred embodiment of the present invention, FIG.

Preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiment described below does not limit the contents of the present invention described in the claims of the utility model registration. In addition, all the configurations described below are not necessarily essential requirements of the present invention.
<Embodiment>

  Hereinafter, specific embodiments of the present invention will be described with reference to FIGS. 1 and 2, according to the embodiment of the fixed clamp of the racket string machine according to the present invention, the fixed clamp unit (1), the tight latch unit (2), the adjustment ring (3), and the joint A pin (4) and a backstop structure (5) are provided. The fixed clamp unit (1) includes a main body (11) and a sandwiching pedestal (12) that correspond to each other, and two first springs (13) are installed between the main body (11) and the sandwiching pedestal (12). The A plurality of first claw portions (112) protrude from the upper end of the main body (11), and a plurality of second claw portions (122) protrude from the upper end of the sandwiching base (12). Each second claw portion (122) is adjacent to the rear end of each first claw portion (112), and the fixed clamp unit (1) is between the first claw portion (112) and the second claw portion (122). A clamping port (6) is formed in the. Thereby, a racket string (not shown) is passed through the holding port (6), and each first claw part (112) and each second claw part (122) hold the racket string. The tight latch unit (2) includes an abutment block (21) and a handle (22). The abutment block (21) is adjacent to the rear end of the holding base (12), and the front end of the handle (22) abuts. It is movably connected to the block (21). The front end of the handle (22) is brought into contact with the rear end of the main body (11), and the adjustment ring (3) is movably installed at the front end of the main body (11). The joining pin (4) is pivotally penetrated through the main body (11) and the holding base (12), and the front end of the joining pin (4) is screwed to the adjustment ring (3), and the rear side of the joining pin (4). The end is pivoted to the abutment block (21) by a pin (42). When the handle (22) is actuated downward, the abutment block (21) rotates a little width around the pin (42), and the abutment block (21) contacts the clamping pedestal (12). The first claw portion (112) and the second claw portion (122) sandwich the racket string from each other by being moved by a little width toward the main body (11).

  The structure of the above-mentioned fixed clamp unit (1), tight latch unit (2), adjustment ring (3), and joining pin (4) is the same as that of the conventional thread clamping device.

  Further, the first convex portion (14) and the second convex portion (15) protrude from the front edge of the main body (1), and the first convex portion (14) and the second convex portion (15) are laterally directed to each other. Face each other. The main body (1) is provided with a cover (16) between the first convex portion (14) and the second convex portion (15). The first convex portion (14) has a first through hole (142) penetrating in the lateral direction, the second convex portion (15) has a second through hole (152) penetrating in the lateral direction, and a second through hole ( 152) forms an annular limiting portion (154) so as to be adjacent to one end of the first convex portion (14). The adjustment ring (3) forms a plurality of tip circles (31) on the annular outer periphery, and a root circle (32) is formed between the adjacent tip circles (31) (FIGS. 2 to FIG. 2). 5).

  The backstop structure (5) includes a backstop member (51), a pivot (52), a second spring (53), a socket set screw (54), a push rod (55), and a third spring (56). ) And a support member (58). The backstop member (51) is installed between the first convex portion (14) and the second convex portion (15), and the pivot (52) is pivotally penetrated through the backstop member (51). To the main body (1). Thereby, the backstop member (51) reciprocates around the pivot (52). An embedded buckle part (512) and a push part (514) protrude from the backstop member (51), the embedded buckle part (512) is brought close to the first convex part (14), and the push part (514) is the second part. Close to the convex portion (15), the end of the embedded buckle portion (512) is fitted to the root circle (32) on the outer periphery of the adjustment ring (3) and adjacent to the first convex portion (14). Abutting on the tip circle (31), the adjustment ring (3) is restricted to rotate only in the clockwise direction of the drawing, whereby the joining pin (4) is moved only in the direction away from the drawing. A socket set screw (54) is screwed into one end outside the main body (1) of the first through hole (142), a support member (58) is provided in the first through hole (142), and the support member One end of (58) is in contact with the socket set screw (54), one end of the second spring (53) is in contact with the outside of the embedded buckle portion (512) of the backstop member (51), and the other end is in the first position. It enters into one through-hole (142) and is covered with the support member (58). The second spring (53) is in contact with the cap (582) adjacent to the socket set screw (54) of the support member (58). Accordingly, the embedded buckle part (512) is held in contact with the adjustment ring (3) by the elasticity provided by the second spring (53), and the second spring (53) is rotated by the rotation of the socket set screw (54). ) Is adjusted with respect to the embedded buckle portion (512). The push rod (55) is pivotally attached to the second through hole (152), and one end of the push rod (55) serves as an operating end (552), and a head portion (554) is formed to be extended at the other end. The The operating end (552) is in contact with the outer side of the push portion (514) of the backstop member (51), and the other end of the head portion (554) is projected outside the main body (1). The push rod (55) is fitted with a C-shaped buckle (57) between the operating end (552) and the second convex portion (15), whereby the push rod (55) is moved to the second convex portion ( 15). The third spring (56) is axially attached to the second through hole (152), and the push rod (55) is axially passed through the third spring (56), and one end of the third spring (56) has a limiting portion (154). ) And the other end is in contact with the head portion (554).

  The backstop member (51) limits the rotation direction of the adjustment ring (3) by the embedded buckle portion (512). In the progress of the threading operation, the joining pin (4) is moved only in the front end direction of the main body (1) and is not moved in the rear end direction of the main body (1). For this reason, the width | variety of a clamping port (6) is not expanded by the resistance force of a racket string.

  When a racket string having a small fiber diameter is sandwiched, the adjustment ring (3) is directly rotated, and the joining pin (4) is moved toward the front end of the main body (1) to match the fiber diameter of the racket string. The width of the clamping port (6) is reduced. In the process of the threading operation, the width of the holding port (6) does not increase without permission, so that the reliability of holding the racket string by the fixed clamp is increased. Since there is no need to adjust the width of the clamping port (6) one by one, the convenience of the threading operation is enhanced.

  Furthermore, when the width of the clamping port (6) is expanded, when a racket string having a large fiber diameter is clamped by the fixed clamp, as shown in FIG. 6, the push rod (55) is directed toward the backstop member (51). The head portion (554) is pushed, the back stop member (51) is pushed by the push rod (55), and is rotated counterclockwise in the drawing with the pivot (52) as an axis, and the embedded buckle portion ( 512) is separated from the adjustment ring (3), the restriction on the adjustment ring (3) of the backstop member (51) is released, the adjustment ring (3) is rotated, and the width of the clamping port (6) is expanded. The

  The embodiments disclosed herein are for the purpose of explaining, not limiting the present invention, and the spirit and scope of the present invention are not limited by such embodiments. The scope of the present invention should be construed according to the claims for utility model registration, and all technologies within the equivalent scope should be construed as being included in the scope of claims for utility model registration.

DESCRIPTION OF SYMBOLS 1 Fixed clamp unit 11 Main body 112 First claw part 12 Holding base 122 Second claw part 13 First spring 14 First convex part 142 First through hole 15 Second convex part 152 Second through hole 154 Limited part 16 Cover 2 Tight Latch unit 21 Contact block 22 Handle 3 Adjustment ring 31 Tooth circle 32 Tooth circle 4 Joint pin 42 Pin 5 Backstop structure 51 Backstop member 512 Embedded buckle portion 514 Push portion 52 Pivot 53 Second spring 54 Socket set screw 55 Push rod 552 Operating end 554 Head portion 56 Third spring 57 C-type buckle 58 Support member 582 Cap 6 Clamping port

Claims (2)

A fixed clamp of a racket string machine comprising a fixed clamp unit, a tight latch unit, an adjusting ring, a joining pin, and a backstop structure, wherein the fixed clamp unit further includes a main body and a sandwiching pedestal corresponding to each other, Two first springs are installed between the first and second clamping bases, a plurality of first claw portions project from the upper end of the main body, a plurality of second claw portions project from the upper end of the clamping pedestal, The two claw portions are adjacent to the rear ends of the first claw portions, the fixed clamp unit forms a clamping port between the first claw portion and the second claw portion, and the tight latch unit has a contact block and a handle. The abutment block is adjacent to the rear end of the holding pedestal, the front end of the handle is movably connected to the abutment block, the front end of the handle is abutted against the rear end of the main body, and the adjustment ring is Are movable installed on the edge, joining pin is penetrated pivotally to the body and clamping the pedestal, joining pin end is Nishise' the adjustment ring, the bonding pin is pivoted into abutment block,
A first protrusion protrudes from the front edge of the main body, the first protrusion penetrates the first through-hole in the lateral direction, the adjustment ring forms a plurality of tip circles on the annular outer periphery, and adjacent tooth tips A root circle is formed between each circle,
The backstop structure further includes a backstop member, a pivot, a second spring, a socket set screw, and a support member, and the pivot is screwed into the main body so as to be pivotably penetrated through the backstop member. This causes the backstop member to reciprocately rotate, and the embedded buckle portion protrudes from the backstop member, and the end of the embedded buckle portion is fitted to the root circle on the outer periphery of the adjustment ring and the first convex portion , The rotation of the adjusting ring in one direction is restricted, the socket set screw is screwed into the first through hole, and the support member is installed in the first through hole. One end of the support member is in contact with the socket set screw, one end of the second spring is in contact with the outside of the embedded buckle portion of the backstop member, and the other end enters the first through hole. And the second spring is abutted against a cap adjacent to the socket set screw of the support member, whereby the embedded buckle portion is held so as to contact the adjustment ring. Fixed clamp for racket string machine. A second convex portion is further protruded from the front edge of the main body, the first convex portion and the second convex portion face each other in the lateral direction, the second convex portion penetrates the second through hole in the lateral direction, and The inside of the second through hole forms an annular limiting portion so as to be adjacent to one end of the first convex portion,
The backstop structure further includes a push rod and a third spring, the backstop member is installed between the first convex portion and the second convex portion, the push portion further protrudes from the backstop member, and the embedded buckle portion is The head is close to the first convex part, the push part is close to the second convex part, the push rod is pivotally attached to the second through hole, one end of the push rod is used as an operating end, and the other end is extended. Part is formed, the working end is in contact with the outside of the push part of the backstop member, the other end of the head part is projected to the outside of the main body, and the push rod is C-shaped between the working end and the second convex part. The buckle is fitted, whereby the push rod is positioned on the second convex portion, the third spring is pivotally attached to the second through hole, and the push rod is pivotally passed through the third spring, Is in contact with the limiting portion, the other end is characterized in that it is brought into contact with the head portion, the fixed clamp racquet stringing machine of claim 1.