CN212327354U

CN212327354U - Positioning structure of racket frame holder of racket stringing machine

Info

Publication number: CN212327354U
Application number: CN201922309400.1U
Authority: CN
Inventors: 李珉苇
Original assignee: Exthree Industrial Co ltd
Current assignee: Exthree Industrial Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2021-01-12
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a location structure of racket frame holder of racket threading machine, contain a rack, a clamping piece, an operating parts and two springs, wherein this rack inlays and locates a platen, the stand of this racket frame holder forms one and holds the room, this clamping piece is located this room of holding alive, the bottom edge of this clamping piece forms a dentition and this rack relative meshing, this stand is located to this operating parts pivot, this operating parts mainly meets by an operation portion and a top push portion slant and constitutes, this top push portion extends in the inside of this clamping piece, make this clamping piece of upwards lapse of this top push portion, the meshing relation of this clamping piece and this rack is removed. The clamping block is meshed with the rack, so that the racket frame holder for holding the racket can be effectively positioned in two directions, and the positioning reliability of the racket frame holder is improved.

Description

Positioning structure of frame holder of racket threading machine

Technical Field

The present invention relates to a frame holder for holding a racket, and more particularly, to a positioning structure of a frame holder for a racket stringing machine.

Background

In a ball game machine having an annular frame such as a tennis racket or a badminton racket, a net-like hitting surface is woven in the frame with elastic racket strings, and the degree of tension of the hitting surface depends on the tensile stress value generated by the tensile action of the racket strings when the hitting surface is woven, and in order to facilitate the weaving of the racket strings and to obtain an accurate tensile stress value, the racket stringing work is generally performed with a racket stringing machine.

The racket stringing machine is provided with a plurality of racket frame holders vertically arranged on the top edge of a bedplate, and the racket frame holders hold the annular racket frame, so that the racket is kept in a stable position in the stringing process, and the stringing and stretching operation of racket strings is facilitated.

Since the sizes of the ring frames of the tennis racket and the badminton racket are different, when the stringing operation is performed on the tennis racket by using the stringing machine, the frame holders are required to be separated in the opposite direction so that the frame of the tennis racket can be inserted between the frame holders, whereas when the stringing operation is performed on the badminton racket by using the stringing machine, the frame holders are required to be moved closer to each other so that the frame holders can effectively hold the frame of the badminton racket, and accordingly, the relative distance between the frame holders must be changed by the racket stringing machine.

The taiwan patent No. M426421 discloses a positioning structure of racket frame holder of racket threading machine, which comprises a rack, a resisting element and an operating element, wherein the rack is embedded in the bedplate of the threading machine, the top edge of the rack is provided with a plurality of unidirectional ratchets in a row, the racket frame holder is arranged on the top edge of the bedplate, the resisting element is movably arranged in the racket frame holder, the bottom end of the resisting element and the ratchets of the rack form an oblique unidirectional resisting force, therefore, when the racket frame holder is pushed towards the peripheral direction of the bedplate, even if the resisting element is not operated, the resisting state of the resisting element and the ratchets is released, the resisting element can sequentially jump and embed the unidirectional bedplate, the racket frame holder cannot be limited to move towards the peripheral direction of the bedplate, during threading, if the ratchets touch the racket frame holder towards the peripheral direction of the bedplate, the racket frame may move towards the peripheral direction of the bedplate, so that the effective fixing of the racket frame holder to the racket frame is released, and the threading operation is affected.

SUMMERY OF THE UTILITY MODEL

The main object of the present invention is to provide a positioning structure of a racket frame holder of a racket stringing machine, which is capable of effectively positioning the racket frame holder for holding a racket bidirectionally by engaging a locking piece with a rack, thereby improving the positioning reliability of the racket frame holder.

In order to meet the above objects, the present invention provides a positioning structure of a frame holder of a racket stringing machine, comprising a rack, a locking block, an operating member and two springs, wherein a column of the frame holder is disposed on a top edge of a table plate of the racket stringing machine, the rack is embedded in the table plate, and a plurality of first protruding teeth are protruded on a top edge of the rack;

a chamber is formed inside the upright column, the bottom edge of the chamber is opened to the rack, and the chamber extends to one side of the upright column to form an opening;

the clamping block is movably arranged in the accommodating chamber, a tooth row formed by a plurality of second convex teeth in a row is formed at the bottom edge of the clamping block, the tooth row is parallel to the rack, so that the clamping block is oppositely meshed with the rack by virtue of the tooth row, a groove is sunken at one side of the clamping block adjacent to the opening, and a propping wall is formed at the top edge of the groove;

the operating part is pivoted on the upright post and mainly comprises an operating part and a pushing part, the operating part penetrates through a pivot, two ends of the pivot are connected with the upright post, so that the operating part rotates by taking the pivot as a center, one end of the pushing part is obliquely connected with the operating part, the other end of the pushing part extends into the groove and is adjacent to the abutting wall, so that the pushing part pushes the clamping block upwards to remove the meshing relation between the clamping block and the rack;

the spring is arranged at the top end of the clamping block, and two ends of the spring respectively support against the clamping block and the upright post, so that the spring forces the clamping block to be meshed with the rack.

The clamping block is meshed with the rack, so that the racket frame holder for holding the racket can be effectively positioned in two directions, and the positioning reliability of the racket frame holder is improved.

Drawings

FIG. 1 is a perspective view of a preferred embodiment of the present invention;

fig. 2 is an exploded perspective view of the preferred embodiment of the present invention;

FIG. 3 is a side, partially cut away view of a preferred embodiment of the present invention;

fig. 4 is a side partial cross-sectional view of the preferred embodiment of the present invention in an actuated state.

Symbolic illustration in the drawings:

10 racks; 12 a first lobe;

20 clamping blocks; 21 a second lobe;

22 rows of teeth; 23, grooves;

24 against the wall; 25 long grooves;

26 a limiting rod; 27 a first embedding hole;

30 an operating member; 32 an operation section;

34 a pushing part; 342 arm bar;

344 a roller; 346 a shaft;

36 a pivot shaft; 40 springs;

50 upright posts; a chamber 52;

54 opening; 56 a second embedding hole;

60 platens.

Detailed Description

As shown in fig. 1 to 4, a preferred embodiment of a positioning structure of a frame holder of a racket stringing machine according to the present invention comprises a rack 10, a locking block 20, an operating member 30 and two springs 40, wherein a pillar 50 of the frame holder is disposed at a top edge of a platform 60 of the racket stringing machine, the rack 10 is embedded in the platform 60, a plurality of first protruding teeth 12 are protruded at a top edge of the rack 10, a chamber 52 is formed inside the pillar 50, the chamber 52 extends downward, a bottom edge of the chamber 52 is open to the rack 10, and the chamber 52 extends to one side of the pillar 50 to form an opening 54.

The locking block 20 is movably arranged inside the accommodating chamber 52, a tooth row 22 formed by a plurality of second convex teeth 21 is formed at the bottom edge of the locking block 20, the tooth row 22 is parallel to the rack 10, so that the locking block 20 is relatively engaged with the rack 10 by the tooth row 22, a groove 23 is recessed at one side adjacent to the opening 54 of the locking block 20, an abutting wall 24 is formed at the top edge of the groove 23, the operating member 30 is pivoted on the upright column 50, the operating member 30 is mainly composed of an operating part 32 and a pushing part 34, the operating part 30 passes through a pivot 36, two ends of the pivot 36 are connected with the upright column 50, according to the operating member 30 rotates by taking the pivot 36 as a center, one end of the pushing part 34 is obliquely connected with the operating part 32, and a protruding part of the operating part 32 passes through the opening 54 and is preferably selected from the external of the accommodating chamber 52, and the other end of the pushing part 34 extends inside the groove 23 and abuts against the wall 24, pushing the pushing part 34 upwards to push the locking block 20, and releasing the engagement between the locking block 20 and the rack 10; the spring 40 is disposed on the top of the locking block 20, and two ends of the spring 40 respectively support the locking block 20 and the pillar 50, so that the spring 40 forces the locking block 20 to engage with the rack 10.

As mentioned above, in the preferred embodiment, when the column 50 is positioned on the platen 60, the spring 40 exerts a force on the locking block 20, the locking block 20 moves downward, and the locking block 20 is engaged with the rack 10, at this time, since each second tooth 21 and the corresponding first tooth 12 form a relative stop in the long axis direction of the rack 10, the column 50 cannot be displaced at the top edge of the platen 60 due to the lateral external force acting on the column 50.

When the shaft 50 is to be pushed for adjusting the racket frame holder, the operating portion 32 is pressed toward the chamber 52, so that the operating member 30 rotates counterclockwise, the pushing portion 34 pushes the abutting wall 24 upward, and the locking piece 20 is pushed to move upward (as shown in fig. 4), so that the locking piece 20 is separated from the rack 10, the engagement between the locking piece 20 and the rack 10 is released, and the shaft 50 is pushed to move along the top edge of the platform 60.

As described above, the present invention can effectively position the frame retainer for retaining the racket bidirectionally by engaging the engaging piece 20 with the rack 10, thereby improving the positioning reliability of the frame retainer.

Furthermore, the pushing portion 34 includes two arms 342 and a roller 344, wherein each of the arms 342 is laterally opposite to each other, one end of each of the arms 342 is obliquely connected to the operating portion 32, one end of each of the arms 342 extends toward the top edge of the groove 23, the roller 344 is disposed between the arms 342, the roller 344 axially penetrates a pivot 346, and the pivot 346 is connected to each of the arms 342, so that the roller 344 pushes the locking piece 20 to move upward.

When the pushing portion 34 pushes the locking piece 20 upward, the roller 344 forms a rolling contact with the abutting wall 24, thereby reducing the relative friction between the roller 344 and the abutting wall 24, and when the upright column 50 is displaced to a desired position and the control of the application of force to the operating portion 32 is released, the elastic force of the spring 40 and the gravity of the locking piece 20 cause the locking piece 20 to be displaced downward, and the pushing portion 34 contacts with the abutting wall 24 by the roller 344, thereby preventing the locking between the abutting wall 24 and the pushing portion 34 from being formed, so that the locking piece 20 is displaced downward, and the reliability of restoring the meshing relationship between the locking piece 20 and the rack 10 is improved.

The clamping block 20 laterally penetrates through a long groove 25, two ends of the long groove 25 in the long extending direction respectively point to the top of the clamping block 20 and the rack 10, the long groove 25 is pivotally inserted with a limiting rod 26, two ends of the limiting rod 26 are respectively connected with the upright column 50, so that the limiting rod 26 relatively limits the displacement stroke of the clamping block 20 in up-and-down motion.

The top end of the locking block 20 is recessed downward to form two first insertion holes 27, the top end of the accommodating chamber 52 of the column 50 is recessed upward to form two second insertion holes 56, and two ends of each spring 40 are respectively inserted into the first insertion holes 27 and the second insertion holes 56, so as to position each spring 40.

Claims

1. A positioning structure of a racket frame holder of a racket stringing machine, characterized in that it comprises a rack, a clamping block, an operating member and two springs, wherein a column of the racket frame holder is arranged on the racket The top edge of a plate of the threading machine, the rack is embedded in the plate, and the top edge of the rack is protruded with a plurality of first protruding teeth;

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

The clamping block is arranged in the interior of the chamber, and the bottom edge of the clamping block forms a dentate row composed of a plurality of second protruding teeth. The dentition row is parallel to the rack, so that the clamping block is Through the relative engagement of the tooth row and the rack, the locking block recesses a groove on the side adjacent to the opening, and the top edge of the groove forms an abutting wall;

The operating piece is pivoted on the upright column, and the operating piece is composed of an operating portion and a pushing portion. A pivot shaft is passed through the operating portion. The pivot is the center of rotation, one end of the push portion is connected to the operation portion obliquely, and the other end of the push portion extends inside the groove and is adjacent to the abutting wall, so that the push portion is upward Push the clamping block to release the engaging relationship between the clamping block and the rack;

The spring is arranged at the top end of the locking block, and two ends of the spring respectively abut against the locking block and the upright column, so that the spring forces the locking block to engage with the rack.

2 . The positioning structure of the racket frame holder of the racket stringing machine as claimed in claim 1 , wherein the pushing portion comprises two arms and a roller, each of the arms is laterally opposite to each other, and each of the arms One end of the rod is connected to the operation part obliquely, one end of each arm rod extends toward the top edge of the groove, the roller is arranged between each of the arm rods, the roller axially passes through a shaft, the The shaft rod is connected with each of the arm rods, so that the roller pushes the clamping block to move upward.

3. The positioning structure of the racket frame holder of the racket stringing machine according to claim 1 or 2, wherein the clamping block laterally penetrates a long groove, and the long groove is respectively at both ends of the long extending direction. Pointing to the top of the clamping block and the rack, a limit rod is pivotally inserted into the long slot, and the two ends of the limit rod are respectively connected with the upright column, so that the limit rod relatively restricts the up and down movement of the clamping block. displacement stroke.

4 . The positioning structure of the racket frame holder of the racket stringing machine according to claim 1 or 2 , wherein a part of the operating portion protrudes out of the chamber through the opening. 5 .

5. The positioning structure of the racket frame holder of the racket stringing machine according to claim 1 or 2, wherein the top end of the clamping block is recessed downward with two first insertion holes, and the upright column is at the top end of the chamber Two second insertion holes are recessed upward, and two ends of each spring are respectively inserted into the first insertion hole and the second insertion hole, and each spring is positioned accordingly.