TWI700111B - Positioning structure of racket frame holder of racket stringing machine - Google Patents

Abstract

A positioning structure for a racket frame holder of a racket stringing machine, comprising a rack, a clamping block, an operating member and two springs, wherein the rack is embedded in a platen, and the column of the racket holder forms a rack The accommodating chamber, the clamping block is flexibly arranged in the accommodating chamber, the bottom edge of the clamping block forms a tooth row to engage with the rack, the operating member is pivoted on the column, the operating member is mainly composed of an operating part and a The pushing portion is diagonally connected to each other, and the pushing portion extends inside the locking block. According to the pushing portion, the locking block is pushed upward to release the meshing relationship between the locking block and the rack.

As the clamping block engages with the rack, the frame holder for holding the racket can be effectively positioned bidirectionally, and the positioning reliability of the frame holder is improved.

Description

Positioning structure of racket frame holder of racket stringing machine

The present invention relates to a racket frame holder used for a racket stringing machine to clamp a racket, and more specifically, it refers to a positioning structure of a racket frame holder of a racket stringing machine.

Tennis rackets, badminton rackets and other ball equipment with a ring frame. In the racket frame, the elastic racket thread is used to weave a net-like hitting surface. The degree of stretch of the hitting surface depends on the threading of the racket line. When forming the hitting surface, the tensile stress value of the racket string formed by the stretching action, in order to make the threading of the racket string easy to perform and the tensile stress value to be accurate, generally a racket stringing machine is used to perform the stringing operation of the racket.

The racket stringing machine is equipped with several racket frame holders on the top edge of a board, and the ring-shaped racket frame is held by each of the racket frame holders to keep the racket in a stable and fixed position during the stringing process to facilitate the stringing of the racket. Weaving and stretching operations are carried out.

Because the size of the ring frame of a tennis racket is different from that of a badminton racket, after using a stringing machine to perform stringing operations on a badminton racket, when you want to perform stringing operations on a tennis racket, you need to move the racket holders away from each other in the opposite direction to make the tennis racket The racket frame can be placed between the racket holders. On the contrary, after the stringing machine is used to thread the tennis racket, when you want to perform the stringing operation on the badminton racket, you need to move the racket holders closer to each other. The racket frame holders effectively hold the racket frame of the badminton racket. Accordingly, the racket stringing machine must be able to change the relative distance between the racket frame holders.

The M426421 patent discloses a positioning structure of the racket frame holder of the racket stringing machine It includes a rack, a resisting member and an operating member, wherein the rack is embedded in the table of the stringing machine, the top edge of the rack is provided with a plurality of one-way ratchets in a row, and the racket holder Set on the top edge of the platen, the resisting piece is flexibly arranged in the racket holder, the bottom end of the resisting piece and the ratchet teeth of the rack form an oblique one-way resist, and accordingly, toward the outer periphery of the platen When the frame holder is moved in the direction, even if the resisting piece is not operated to release the resisting state of the resisting piece and the ratchet, the resisting piece can still be inserted into the ratchets in one direction in sequence, and the frame cannot be restricted. The holder moves toward the outer periphery of the platen. During threading, if you accidentally touch the frame holder toward the periphery of the platen, it may cause the frame holder to move toward the periphery of the platen. , So that the effective holding of the frame holder to the frame is released, which affects the threading operation.

The main purpose of the present invention is to provide a positioning structure for the racket frame holder of the racket stringing machine. By engaging the clamping block with the rack, the racket frame holder for holding the racket can be effectively positioned in both directions to improve the racket frame retention Reliability of positioning device.

To meet the foregoing objectives, the present invention is a positioning structure for a racket frame holder of a racket stringing machine, which includes a rack, a clamping block, an operating member and two springs, wherein one of the pillars of the racket frame holder is arranged on the racket frame holder. The top edge of a table of the racket stringing machine, the rack is embedded in the table, and the top edge of the rack is protruding with a plurality of first convex teeth;

The interior of the column forms a chamber, the bottom edge of the chamber is open to the rack, and the chamber extends on one side of the column to form an opening;

The clamping block is flexibly arranged inside the chamber, and the bottom edge of the clamping block forms a tooth row formed by a plurality of second convex teeth in a row. The tooth row is parallel to the rack, so that the clamping block The block is relatively engaged with the rack through the tooth row, the clamping block is recessed in a groove on the side adjacent to the opening, and the concave The top edge of the groove forms an abutting wall;

The operating member is pivoted to the column, and the operating member is mainly composed of an operating portion and a pushing portion. The operating portion is penetrated by a pivot, and both ends of the pivot are connected with the column, so that the operating member Rotating according to the pivot axis, one end of the pushing portion is diagonally connected with the operating portion, and the other end of the pushing portion extends inside the groove and is adjacent to the abutting wall, so that the top The pushing part pushes the locking block upward to release the meshing relationship between the locking block and the rack;

The spring is arranged at the top end of the locking block, and both ends of the spring respectively resist the locking block and the upright post, so that the spring forces the locking block to engage with the rack.

As the clamping block engages with the rack, the frame holder for holding the racket can be effectively positioned bidirectionally, and the positioning reliability of the frame holder is improved.

10‧‧‧Rack

12‧‧‧First convex tooth

20‧‧‧Card block

21‧‧‧Second convex tooth

22‧‧‧dentition

23‧‧‧Groove

24‧‧‧Abutting against the wall

25‧‧‧Long slot

26‧‧‧Limit lever

27‧‧‧First hole

30‧‧‧Operation piece

32‧‧‧Operation Department

34‧‧‧Pushing part

342‧‧‧Boom

344‧‧‧wheel

346‧‧‧Axle

36‧‧‧Pivot

40‧‧‧Spring

50‧‧‧Column

52‧‧‧Containing Room

54‧‧‧Open

56‧‧‧Second recessed hole

60‧‧‧table

The first figure is a perspective view of a preferred embodiment of the present invention.

The second figure is an exploded perspective view of the preferred embodiment of the present invention.

The third figure is a partial cross-sectional view of the preferred embodiment of the present invention.

The fourth figure is a partial cross-sectional view of the side view of the active state of the preferred embodiment of the invention.

As shown in the first to fourth figures, a preferred embodiment of the positioning structure of the frame holder of the racket stringing machine of the present invention includes a rack 10, a locking block 20, an operating member 30 and two springs 40 , Wherein a post 50 of the racket frame holder is set on the top edge of a platen 60 of the racket stringing machine, the rack 10 is embedded in the platen 60, and the top edge of the rack 10 is protruded A protruding tooth 12, a chamber 52 is formed inside the column 50, and the chamber 52 extends downward, and the bottom edge of the chamber 52 faces the rack 10 When opened, the chamber 52 extends to one side of the column 50 to form an opening 54.

The locking block 20 is flexibly arranged inside the chamber 52, and the bottom edge of the locking block 20 forms a tooth row 22 formed by a plurality of second convex teeth 21 in a row. The tooth row 22 and the rack 10 Parallel, so that the locking block 20 engages with the rack 10 through the tooth row 22, the locking block 20 is recessed with a groove 23 on the side adjacent to the opening 54, and the top edge of the groove 23 An abutting wall 24 is formed. The operating member 30 is pivoted on the column 50. The operating member 30 is mainly composed of an operating portion 32 and a pushing portion 34. The operating portion 30 is penetrated by a pivot 36, the pivot The two ends of the 36 are connected with the upright 50, so that the operating member 30 rotates according to the pivot 36 as the center, one end of the pushing portion 34 is diagonally connected with the operating portion 32, and one of the operating portions 32 A part of the opening 54 protruding to the outside of the chamber 52 is a preferred implementation choice. The other end of the pushing portion 34 extends inside the groove 23 and is adjacent to the abutting wall 24, so The pushing portion 34 pushes the locking block 20 upward to release the engagement relationship between the locking block 20 and the rack 10; the spring 40 is arranged at the top of the locking block 20, and both ends of the spring 40 respectively resist the card According to the block 20 and the column 50, the spring 40 forces the clamping block 20 to engage with the rack 10.

As in the aforementioned preferred embodiment, when the column 50 is positioned on the platen 60, the spring 40 exerts a force on the clamping block 20, the clamping block 20 moves downward, and the clamping block 20 and The rack 10 meshes. At this time, since each of the second convex teeth 21 and the corresponding first convex tooth 12 respectively form relative stops in the long axis direction of the rack 10, they act on the lateral direction of the column 50. External force cannot push the column 50 to the top edge of the platen 60 to move.

When the column 50 is to be moved for the purpose of adjusting the frame holder, the operating portion 32 is pressed toward the chamber 52 to rotate the operating member 30 in a counterclockwise direction, and the pushing portion 34 responds to The abutting wall 24 forms an upward pushing action, and the locking block 20 can be pushed upward to move (as shown in the fourth figure), so that the locking block 20 is separated from the rack 10, and the locking block 20 is released from The The meshing relationship of the rack 10 can move the column 50 to the top edge of the platen 60 to move.

According to the foregoing, the present invention can effectively position the frame holder for holding the racket in two directions by engaging the locking block 20 with the rack 10, thereby improving the positioning reliability of the frame holder.

Furthermore, the pushing portion 34 includes two arm rods 342 and a roller 344, wherein each of the arm rods 342 is laterally opposed to each other, and one end of each arm rod 342 is diagonally connected to the operating portion 32, and each arm One end of the rod 342 extends toward the top edge of the groove 23, the roller 344 is arranged between the arm rods 342, the roller 344 axially penetrates a shaft 346, and the shaft 346 is connected to each arm 342 Connected, according to which the roller 344 pushes the locking block 20 upwardly.

When the pushing portion 34 pushes the locking block 20 upward, the roller 344 forms rolling contact with the abutting wall 24, thereby reducing the relative friction between the roller 344 and the abutting wall 24, and when the column 50 is displaced to the desired position, and when the force control of the operating portion 32 is released, the elastic force of the spring 40 and the gravity of the locking block 20 cause the locking block 20 to move downwards, and the pushing portion 34 borrows The contact between the roller 344 and the abutting wall 24 can prevent the abutment wall 24 and the pushing portion 34 from being jammed with each other, so that the locking block 20 is displaced downward to restore the locking block 20 The reliability of the meshing relationship with the rack 10 is improved.

The locking block 20 laterally penetrates a long slot 25, the two ends of the long slot 25 in the elongated extending direction respectively point to the top of the locking block 20 and the rack 10, and the long slot 25 pivotally inserts a limit rod 26. The two ends of the limiting rod 26 are respectively connected with the upright post 50, so that the limiting rod 26 relatively limits the displacement stroke of the locking block 20 up and down.

The top end of the clamping block 20 is recessed downwardly with two first insertion holes 27, and the top end of the upright 50 is recessed upwardly at the top of the chamber 52 with two second insertion holes 56. hole 27 and the second embedding hole 56 respectively position the springs 40 accordingly.

10‧‧‧Rack

12‧‧‧First convex tooth

20‧‧‧Card block

21‧‧‧Second convex tooth

23‧‧‧Groove

24‧‧‧Abutting against the wall

25‧‧‧Long slot

26‧‧‧Limit lever

27‧‧‧First hole

30‧‧‧Operation piece

32‧‧‧Operation Department

34‧‧‧Pushing part

342‧‧‧Boom

344‧‧‧wheel

346‧‧‧Axle

36‧‧‧Pivot

40‧‧‧Spring

50‧‧‧Column

52‧‧‧Containing Room

54‧‧‧Open

60‧‧‧table

Claims (5)

A positioning structure of a racket frame holder of a racket stringing machine, comprising a rack, a clamping block, an operating member and two springs, wherein one of the pillars of the racket frame holder is arranged on a platen of the racket stringing machine At the top edge, the rack is embedded in the platen, and the top edge of the rack is protruding with a number of first convex teeth; The interior of the column forms a chamber, the bottom edge of the chamber is open to the rack, and the chamber extends on one side of the column to form an opening; The clamping block is flexibly arranged inside the chamber, and the bottom edge of the clamping block forms a tooth row formed by a plurality of second convex teeth in a row. The tooth row is parallel to the rack, so that the clamping block The block is relatively engaged with the rack through the tooth row, the locking block is recessed in a groove on the side adjacent to the opening, and the top edge of the groove forms an abutting wall; The operating member is pivoted to the column, and the operating member is mainly composed of an operating portion and a pushing portion. The operating portion is penetrated by a pivot, and both ends of the pivot are connected with the column, so that the operating member Rotating according to the pivot axis, one end of the pushing portion is diagonally connected with the operating portion, and the other end of the pushing portion extends inside the groove and is adjacent to the abutting wall, so that the top The pushing part pushes the locking block upward to release the meshing relationship between the locking block and the rack; The spring is arranged at the top end of the locking block, and both ends of the spring respectively resist the locking block and the upright post, so that the spring forces the locking block to engage with the rack. The positioning structure of the racket frame holder of the racket stringing machine described in the scope of the patent application, wherein the pushing part includes two arm rods and a roller, each arm rod is laterally opposite to each other, and each arm rod One end is obliquely connected with the operating part, and one end of each arm rod extends toward the top edge of the groove. The roller is arranged between the arm rods. The roller axially penetrates a shaft rod, and the shaft rod parallels Connected with each arm rod, according to which the roller pushes the clamping block upwardly. For example, the positioning structure of the racket frame holder of the racket stringing machine described in item 1 or item 2 of the scope of patent application, wherein the locking block laterally penetrates a long groove, and the two ends of the long groove in the elongated extending direction are respectively Pointing to the top of the clamping block and the rack, a limit rod is pivotally inserted into the long slot. The two ends of the limit rod are respectively connected with the upright post, so that the limit rod relatively restricts the up and down movement of the clamping block. Displacement stroke. The positioning structure of the racket frame holder of the racket stringing machine described in item 1 or item 2 of the scope of patent application, wherein a part of the operating part protrudes outside the chamber through the opening. The positioning structure of the racket frame holder of the racket stringing machine described in item 1 or item 2 of the scope of the patent application, wherein the top of the clamping block is recessed in two first insertion holes, and the column is at the top of the chamber Two second embedding holes are recessed upward, and two ends of each spring are respectively shafted into the first embedding hole and the second embedding hole, and each spring is positioned accordingly.

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