TWI763172B - Braking structure of racket stringing machine - Google Patents

Abstract

The invention relates to a braking structure of a racket stringing machine, comprising: a base; a racket frame clamping seat, the bottom of which is provided with a rotating shaft pivoted on the base, and a locking member is arranged on the rotating shaft; A braking device is provided with a braking block, the braking block can be changed in displacement and can be changed between a latching position and a position away from the latching position, when the braking block is in the latching position, it is stuck against the latching member , and the catch can be fixed, so that the frame holding seat can be fixed in position during the threading state, which can reduce the shaking when the racket string is pulled, and can improve the threading efficiency and maintain the racket string. tight pounds.

Description

Braking structure of racket stringing machine

The invention relates to a stringing tool, in particular to a braking structure of a racket stringing machine which can assist in fixing the position of a racket frame clamping seat during the stringing process.

According to, as shown in FIG. 1, a conventional threading machine 10 is provided, which includes a base 11, a frame holding seat 12 and a wire pulling device, and has a wire pulling head 13; the frame holding The seat 12 is pivoted on the base 11 and can rotate freely, and the pulling wire head 13 is fixed on the base 11. When the racket is to be threading, first set the racket on the racket holder. 12, because the upper ring of the racket frame is provided with several perforations for threading the racket string, it is necessary to continuously rotate the racket frame holder 12 when threading the racket, so that the racket frame can be rotated to a suitable position. Perform threading work. When threading, the racket string will be pulled to the position of the pulling thread head 13 for clamping, and the racket string will be tightened to an appropriate number of pounds.

During the threading process, the racket holder 12 needs to be continuously rotated to rotate the racket frame to different positions to adjust the threading position so that the user can thread the racket thread on different perforations. Therefore, the racket holder 12 It is necessary to maintain a rotating state. When the pulling head 13 is to clamp the racket string, the racket string will be in a state of being deformed by force when it changes from a relaxed state to a state of tension and tension, so that the The frame holding seat 12 is rotated and oscillated when the racket string is just pulled, and the frame holding seat 12 is swaying and cannot be fixed, which will cause the tension of the string head 13 to tighten the racket string. , resulting in inconsistent weights of the racket surface, so that the user needs to wait for the frame holding seat 12 to stabilize before performing subsequent actions during the threading process, so that the operation efficiency of the racket holding seat 12 is reduced. .

The main purpose of the present invention is to provide a braking structure of the racket stringer which can fix the racket stringer of the racket stringer during stringing.

In order to achieve the above-mentioned purpose, the present invention provides a braking structure of a racket stringing machine, which includes: a base; a racket frame holding seat, the bottom of which has a rotating shaft pivoted on the base, and a locking member is arranged around the rotating shaft; A braking device has a driving part and a linking part, the driving part can drive the linking part to change in a locking position and a position away from the locking, and the linking part is relative to the clip of the frame holding seat The catch piece is provided with a brake block, and the brake block can be driven by the linkage portion to be stuck on the catch piece at the catch position.

Preferably, the driving part is a solenoid valve, and the driving part can drive the linkage part to move linearly.

Preferably, it further includes a control unit, the control unit is electrically connected with the driving part, and can generate a signal to drive the driving part to drive the linking part.

The present invention provides a braking structure for a racket stringing machine. The braking device can drive the linkage portion to displace between the latching position and the latching position through the driving portion, so that the braking block can follow the linkage of the linkage portion. When the brake block is in the catch position, the brake block can fix the catch piece, so that the shaft of the frame holder cannot rotate, and the brake block is away from the catch. When the stopper is in the locking position, the brake block cannot be locked against the locking member, and the rotating shaft can rotate freely, so that the frame holding seat can be in a fixed position when pulling the wire, which can improve the efficiency of threading.

Please refer to FIGS. 2 and 5 , which is a racket stringing machine 20 provided by a preferred embodiment of the present invention, including:

The stringing machine 20 includes a base 30 , a frame holder 40 , and a wire pulling device 50 ; the frame holder 40 is pivoted on the base 30 , and the wire pulling device 50 is fixed On the base 30, a wire gripper 51 is attached to the wire pulling device 50. In this embodiment, the wire gripper 51 is formed by two slidable clips (not shown), which can be used for pulling When the two clips move in the direction of the frame holding seat 40, a clipping action is generated, the gap between the two clips is reduced, and the racket line L can be clamped; otherwise, the two clips When the clip moves in the opposite direction, a release action is generated to release the racket string L. The thread clamping action and releasing action of the thread tensioner are not the main objects of the present invention, and will not be described in detail. The frame holder 40 is used to hold a racket R, and the racket string L is clamped through the string gripper 51 of the cable pulling device 50, and the racket string L is pulled to generate the required pounds; this stringing machine The threading action and structure of 20 are familiar parts and will not be repeated here; among them:

The frame holder 40 , as shown in FIG. 4 , has a rotating shaft 41 pivoted on the base 30 at the bottom thereof. The bottom of the rotating shaft 41 is provided with a latching member 42 , and the latching member 42 is a gear 421;

In the wire-pulling device 50, when the gripper 51 of the gripper 51 inserts the racket string L, the gripper 51 is pushed forward to generate an activation signal when the gripping action is generated;

A braking device 60 , please refer to FIG. 4 , it is fastened on the base 30 and close to the rotating shaft 41 of the frame holder 40 , and has a driving part 61 and a linking part 62 ; the driving part 61 In this embodiment, it is a solenoid valve 611. When the solenoid valve 611 is acted by electricity, it will produce a forward displacement change. An elastic element 6111 is arranged on the solenoid valve 611. When the solenoid valve 611 is acted by electricity When the elastic element 6111 is compressed to generate an elastic force, when the solenoid valve 611 has no power, the elastic element 6111 will generate an elastic restoring force, causing the solenoid valve 611 to generate a backward displacement change. It is not limited to use a solenoid valve, and other devices that can drive displacement change such as a motor can also be used. The front end of the solenoid valve 611 of the driving part 61 can drive the linking part 62 to produce a change in the latching position and away from the latching position. The link portion 62 can be relatively close to or away from the shaft 41 of the frame holder 40 , and the front end of the link portion 62 is provided with a braking block 63 relative to the catch member 42 of the frame holder 40 . It is a toothed block 631, and the braking block 63 can be driven by the linking part 62 to abut the latching member 42 when it is in the latching position or away from the latching member 42 when it is away from the latching position; in order to To ensure the position of the linkage portion 62 , the linkage portion 62 is provided with a slide rail 621 on the base 30 .

A control unit 70 , please refer to FIG. 3 , is electrically connected to the cable pulling device 50 and the driving part 61 of the braking device 60 . The control unit 70 can control the cable pulling device 50 to tighten the racket string. action, and drive the solenoid valve 611 of the driving part 61 to act; at the same time, the control unit 70 can also receive the activation signal of the wire gripper 51, and generate a driving signal to drive the wire gripper 51 of the wire pulling device 50 to perform The pulling wire and the driving part 61 of the braking device 60 generate the clamping position and the displacement change away from the clamping position.

Please refer to FIGS. 5 and 6 , when the racket R is set on the racket holder 40 , because the rotating shaft 41 can form a rotating effect, the user can adjust the position of the racket string L to be pulled. Rotate to the position facing the cable pulling device 50, and pull the racket string L into the gripper 51 of the cable pulling device 50, push the gripper 51 forward, and the gripper 51 will hold the The racket string L transmits an activation signal to the control unit 70 . After the control unit 70 receives the activation signal, it will drive the cable pulling device 50 to tighten the racket string L, and at the same time, it will also drive the braking device 60 . The driving portion 61 allows the solenoid valve 611 of the driving portion 61 to drive the linkage portion 62 to move toward the locking position, that is, close to the rotation shaft 41 of the frame holder 40 , and the linkage portion 62 is slidably arranged on the latching position. On the guide rail 621, the traveling position of the linking part 62 can be ensured, and the gear block 631 of the braking block 63 is used to engage the gear 421 of the latching member 42, so that the gear 421 cannot rotate, thereby making the rotating shaft 41 and the whole racket The frame holding seat 40 is in a fixed state. In this way, when the wire gripper 51 of the wire pulling device 50 holds the racket wire L and exerts force to pull the racket wire L, the frame holding seat 40 can form a stable In this state, the threading action can be performed quickly, the racket R can be prevented from shaking and the threading cannot be performed, the thread changing efficiency can be improved, and the set weight of the racket thread L can be stabilized. When the racquet frame holder 40 and the wire gripper 51 of the wire-pulling device 50 are rotated after pulling the wire, the control unit 70 can be used to release the gripper 51 from holding the racket wire L and stop driving the brake The driving part 61 of the device 60, after the solenoid valve 611 stops driving, the elastic element 6111 will generate an elastic restoring force, and then drive the linking part 62 to move away from the rotating shaft 41 of the frame holder 40, that is to make the linking The part 62 can move away from the latching position, so that the braking block 63 at the front end of the linking part 62 is no longer engaged with the latching member 42, so that the frame holder 40 can return to the rotatable state. Make the wire pulling device 50 move to the frame holding seat 40, and no longer tighten the racket string L, so that the two clips of the string gripper 51 no longer clamp the racket string L, and the racket frame can be rotated Hold the seat 40 to change the stringing position of the racket. When performing the wire pulling operation at the next threading position, move the linkage portion 62 of the braking device 60 to the locking position again, as shown in FIG. 6 , engage the locking member 42 to fix the frame again. The seat 40 is used to tighten the racket string L by the string pulling device 50 .

In use, the control unit 70 can also directly drive the pulling device 50 and/or the braking device 60 to act, and can be adjusted according to different usage requirements. For example, when installing or removing the racket R, the control unit 70 can The driving part 61 of the braking device 60 is driven to fix the frame holder 40, but the wire pulling device 50 does not need to be used.

Please refer to FIG. 7 , which is a second preferred embodiment provided by the present invention, and its main structure is the same as that of the previous embodiment, and the same elements are represented by the same symbols, which will not be repeated, wherein:

The braking device 60 is disposed below the latching member 42 of the frame holder 40 , and the solenoid valve 611 of the braking device 60 drives the linkage portion 62 to reciprocate along the axial direction of the rotating shaft 41 . That is, the linkage portion 62 will drive the braking block 63 to move up and down, forming a locking position and a position change away from the locking position, and the tooth block 631 can be moved from bottom to top to the locking position and then engage the frame clip. The gear 421 of the detent 42 of the holder 40 .

Please refer to FIG. 8 , which is a third preferred embodiment provided by the present invention, and its main structure is the same as that of the first preferred embodiment, and the same elements are represented by the same symbols, which will not be repeated, wherein:

The interlocking part 62 of the braking device 60 is provided with a mandrel 622, and the mandrel 622 can be used as the axis of the interlocking part 62. The driving part 61 is disposed at one end of the interlocking part 61 away from the frame holder 40, The braking block 63 is disposed at one end of the linking part 61 close to the frame holder 40 . When the driving part 61 is driven to drive the linking part 62 , the linking part 62 can rotate with the spindle 622 as the axis , and the brake block 63 can be engaged with the latching member 42 , and the linkage portion 62 can be leveraged through the spindle 622 to shorten the feeding stroke of the solenoid valve 611 .

Please refer to FIG. 9 , which is a fourth preferred embodiment provided by the present invention, and its main structure is the same as that of the first preferred embodiment, and the same elements are represented by the same symbols, which will not be repeated, wherein:

The driving part 61 of the braking device 60 is a motor 612 , one end of the linking part 62 is fixed on the motor 612 , and the other end is provided with the braking block 63 , when the motor 612 rotates, the linking part can be 62 forms a change in the angular displacement, so that the braking block 63 can generate a displacement change of a locking position or away from the locking position, and can be close to or far away from the frame holder 40 .

The braking structure provided by the present invention, through the braking block of the braking device, can have a fixed effect on the frame holding seat. Compared with the conventional threading machine, it will shake during threading operation and affect the threading efficiency; The braking device of the present invention can surely stop the rotation of the racket holding seat during the wire-pulling operation, improve the threading efficiency and stabilize the poundage of the racket threading.

The above-mentioned embodiments are only intended to illustrate the technical means of the present invention and not to limit it, and all equivalent modifications of the present invention should be regarded as the protection scope of the present invention. The structure of the threading machine of the present invention is the first in the field, and has the improvement of practical effect, and the application is filed according to the law.

10: Threading machine

11: Pedestal

12: racket holder

13: Pull wire head

20: Threading machine

30: Pedestal

40: racket holder

41: Spindle

42: Clips

421: Gear

50: Pulling device

51: Wire Clamp

60: Braking device

61: Drive Department

611: Solenoid valve

6111: Elastic element

612: Motor

62: Linkage

621: Rails

622: Mandrel

63: Brake block

631: tooth block

70: Control unit

R: racket

L: racket line

In order to enable your examiners to further understand the purpose, features and effects of the present invention, four preferred embodiments are listed below, and are described in detail with the drawings, wherein: FIG. 1 is a three-dimensional external view of a conventional threading machine. FIG. 2 is a front view of the appearance of the threading machine according to the preferred embodiment of the present invention. FIG. 3 is a schematic diagram of a connection circuit according to a preferred embodiment of the present invention. FIG. 4 is a partial perspective view of the frame holding seat and the braking device according to the preferred embodiment of the present invention. 5 is a front view of the appearance of the stringing machine combined with the racket stringing according to the preferred embodiment of the present invention. FIG. 6 is a schematic diagram of the action of the latching member of the racket holding seat of the present invention being engaged and stopped by the braking block of the braking device. 7 is a schematic diagram of the operation of the braking device according to the second preferred embodiment of the present invention. FIG. 8 is a schematic diagram of the operation of the braking device according to the third preferred embodiment of the present invention. FIG. 9 is a schematic diagram of the operation of the braking device according to the fourth preferred embodiment of the present invention.

20: racket stringing machine

30: Pedestal

40: racket holder

41: Spindle

42: Clips

421: Gear

50: Pulling device

51: Wire Clamp

60: Braking device

61: Drive Department

611: Solenoid valve

6111: Elastic element

62: Linkage

621: Rails

63: Brake block

631: tooth block

70: Control unit

Claims (9)

A braking structure of a racket stringing machine, comprising: a base; a racket frame holding seat, the bottom of which has a rotating shaft pivoted on the base, and a locking member is arranged around the rotating shaft; A braking device is provided with a driving part and a linking part, the driving part can drive the linking part to produce displacement, and the linking part is provided with a braking block relative to the clamping part of the racket holder, the braking block Can be driven by the linking part to move to a latching position and leave the latching position. When the braking block is at the latching position, it latches on the latching member; when the braking block leaves the latching position , the latch is not latched. The braking structure according to claim 1, wherein: the driving part is a solenoid valve, and the driving part can drive the linkage part to move linearly. The braking structure according to claim 1, wherein: the driving part is a solenoid valve, a mandrel is arranged on the linking part, the driving part is arranged on one side of the linking part, and the latching part is arranged on the linking part. The other side of the linking part enables the driving part to drive the linking part to oscillate and displace with the mandrel as the center. The braking structure of claim 1, wherein: the driving part is a motor, one end of the linking part is fixed on the motor, the free end of the linking part is fixed with the brake block, and the motor drives the motor The interlocking portion rotates and displaces with the motor as an axis. The braking structure as claimed in claim 1, further comprising a control unit, the control unit is electrically connected with the driving part, and can generate a signal to drive the driving part and drive the linkage part. The braking structure according to claim 5 further comprises a wire pulling device; the control unit is electrically connected to the wire pulling device, the wire pulling device can generate an activation signal, and the activation signal can drive the driving part to act . The braking structure of claim 6, wherein: the wire pulling device has a wire gripper capable of generating a wire gripping action and a releasing action, and the wire gripping device generates the activation signal when the wire gripping action is generated. The braking structure according to any one of claims 1 to 4, wherein: the latching member is a gear, and the braking block is a tooth block. The braking structure according to claim 1 or 2, wherein: the linkage part of the braking device is provided with a guide rail on the base, and the linkage part is slidably arranged on the guide rail.

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