A hidden adjustment knob and its application

Abstract

A hidden adjustment buckle and its application, the structure of which comprises: a base; a positioning seat, which is arranged at the upper end of the base; a manual rotary cover, which is rotatably arranged at the upper end of the positioning seat; a winding chamber is arranged in the positioning seat, and at least one insertion port communicating with the winding chamber is arranged on the outer side of the positioning seat, and a rope detection and positioning structure is arranged on both sides of the inner wall of the insertion port, and a turntable is rotatably arranged at the center of the bottom surface of the positioning seat. When positioning the end of the rope, it is only necessary to insert the end of the rope through the insertion port, and the end of the rope is directly embedded in the fixed notch in the reset state. After the switch of the inner wall of the fixed notch is pressed against the switch, the switch controls the electromagnet to cut off the power, and the rotating shaft with a torsion spring releases the restriction, performs torsion reset, drives the fixed rod to rotate and press down toward the rope, and the fixed splint on the fixed rod acts on the rope to restrict and position it, which is easy to operate and has a rope detection and positioning structure. When the internal winding structure is damaged, the user can perform repairs in time through the detection prompt.

Description

Technical Field

[0001] The invention discloses a hidden adjusting knob and application thereof, belonging to the field of adjusting knobs. Background Art

[0002] ‌‌A turnbuckle is a tool that can be used to adjust the tightness or tighten an item by adjusting a screw rod or a rotating shaft. ‌ When the existing adjusting turnbuckle is connected and positioned with a tightening rope or belt, the top cover of the adjusting turnbuckle must be removed first to expose the winding chamber, and then the end of the tightening rope or belt must be wound and fixed on the winding shaft in the winding chamber, and finally the top cover must be closed and fixed, which is inconvenient to operate. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a hidden adjusting buckle and its application, so as to solve the problem that when the existing adjusting buckle is connected and positioned with a tightening rope or belt, the top cover of the adjusting buckle needs to be removed first to expose the winding chamber, and then the end of the tightening rope or belt needs to be wound and fixed on the winding shaft in the winding chamber, and finally the top cover needs to be covered and fixed, which makes the operation inconvenient.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solution: a hidden adjustment knob, the structure of which includes:

[0005] Base;

[0006] A positioning seat, arranged at the upper end of the base;

[0007] Manual capping, rotating on the upper end of the positioning seat;

[0008] A winding cavity is provided in the positioning seat, at least one insertion port communicating with the winding cavity is provided on the outer side of the positioning seat, a rope detection and positioning structure is provided on both sides of the inner wall of the insertion port, a turntable is rotatably provided at the center of the bottom surface of the positioning seat, a winding shaft is provided at the center of the upper end of the turntable, a fixed notch facing the insertion port is provided on the winding shaft, and a magnetic fixing structure for fixing the rope head inserted into the fixed notch is also provided on the winding shaft;

[0009] The base is provided with a motor for driving the turntable to rotate, an electric telescopic rod for limiting the rotation of the turntable, and a battery for supplying power to the motor and the electric telescopic rod;

[0010] The bottom edge of the turntable is provided with a plurality of limiting grooves in an annular array, and the output end of the electric telescopic rod is embedded in one of the limiting grooves.

[0011] Furthermore, in order to position the rope and prevent it from curling, the rope detection and positioning structure includes a positioning rod, a light strip, and a hinge seat. The hinge seat is arranged on the inner wall of the positioning seat, and the hinge seat is hinged to the middle section of the positioning rod. The light strip is located on the outer wall of the positioning seat, and one end of the positioning rod is located in the insertion opening. A reset spring is provided between the positioning rod and the inner wall of the positioning seat. The light strip is connected to an electrical contact that extends into the positioning seat, and a battery is provided in the other end of the positioning rod. The outer wall of the positioning rod is provided with a power supply contact that is electrically connected to the battery. When the positioning rod rotates around the hinge seat, the power supply contact will come into contact with the power supply contact.

[0012] Furthermore, in order to quickly fix the rope, the magnetic fixing structure includes a rotating slot located on the inner wall of the fixed slot, a fixed rod, a magnetic seat located on the outer wall of the winding shaft, and a switch. The fixed rod is rotatably arranged in the rotating slot, and one end extends into the fixed slot, and the other end is located above the magnetic seat. The magnetic seat is provided with an electromagnet for magnetically positioning the fixed rod, and a rotating shaft with a torsion spring is provided between the fixed rod and the inner wall of the rotating slot. The switch is located in the bottom of the fixed slot, and a fixed splint is provided below the end of the fixed rod extending into the fixed slot. The switch is connected to the electromagnet with a wire, and a battery for powering the electromagnet is provided in the magnetic seat.

[0013] Furthermore, in order to facilitate the disassembly and replacement of contact blocks of different sizes, the positioning rod includes a contact block located in the extension port and a rod body, the contact block is connected to the rod body, a screw is provided at the end of the contact block facing the rod body, and an internal thread groove is provided on the rod body that is threadably connected to the screw.

[0014] Furthermore, in order to position the rope contact, the contact block is in a √-shaped structure, and the end portion has an arc.

[0015] Furthermore, in order to be magnetically attracted and positioned by the electromagnet, the fixing rod is made of metal material.

[0016] Furthermore, in order to improve the firmness of the clamping rope, the bottom surface of the fixing clamp has a serrated structure.

[0017] Furthermore, in order to improve the stability of the connection, the top end of the reel is connected to the manual rotary cover by a method selected from the group consisting of bolt fixing, snap fixing, and nested fixing.

[0018] Furthermore, in order to facilitate operation, the outer wall of the base is provided with a control panel for controlling the operation of the motor, the electric telescopic rod, and the electromagnet, and the control panel is provided with a plurality of operating switches.

[0019] An application of a hidden adjusting turn buckle. The hidden adjusting turn buckle is applied to the fields of shoes, clothing and packaging to roll up and position at least one rope on shoes, clothing and packaging boxes / bags.

[0020] The beneficial effects of the present invention are as follows: when positioning the end of the rope, it is only necessary to insert the end of the rope through the insertion port, and the end of the rope is directly embedded in the fixed slot in the reset state. After the switch on the inner wall of the fixed slot is touched, the switch controls the electromagnet to cut off the power, and the rotating shaft with the torsion spring releases the restriction, performs torsional reset, and drives the fixed rod to rotate and press down toward the rope. The fixed splint on the fixed rod acts on the rope to limit and position it. The operation is convenient, and the rope is provided with a rope detection and positioning structure. When the internal winding structure is damaged, the user can perform repairs in time through detection prompts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 It is a structural schematic diagram of a hidden adjusting knob of the present invention;

[0023] Figure 2 It is a schematic diagram of the top cross-sectional structure of the positioning seat;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the rope detection and positioning structure;

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of the magnetic fixing structure;

[0026] Figure 5 is a schematic diagram of the cross-sectional structure of the fixing rod;

[0027] Figure 6 It is a schematic diagram of the connection structure between the motor and the turntable;

[0028] Figure 7 It is a schematic diagram of the structure of the fixed splint. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] Example 1

[0031] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 The present invention provides a hidden adjusting knob and its application technical solution: its structure includes:

[0032] Base 1;

[0033] A positioning seat 2 is arranged at the upper end of the base 1;

[0034] A manual screw cap 3 is rotatably arranged on the upper end of the positioning seat 2;

[0035] A winding chamber 21 is provided in the positioning seat 2, at least one insertion opening 22 communicating with the winding chamber 21 is provided on the outer side of the positioning seat 2, a rope detection and positioning structure 23 is provided on both sides of the inner wall of the insertion opening 22, a turntable 24 is rotatably provided at the center of the bottom surface of the positioning seat 2, a winding shaft 25 is provided at the center of the upper end of the turntable 24, a fixed notch 26 facing the insertion opening 22 is provided on the winding shaft 25, and a magnetic fixing structure 27 for fixing the rope head inserted into the fixed notch 26 is also provided on the winding shaft 25;

[0036] The base 1 is provided with a motor 13 for driving the turntable 24 to rotate, an electric telescopic rod 14 for limiting the rotation of the turntable 24, and a battery for supplying power to the motor 13 and the electric telescopic rod 14;

[0037] The bottom edge of the turntable 24 has a plurality of limiting grooves 241 in an annular array, and the output end of the electric telescopic rod 14 is embedded in one of the limiting grooves 241 .

[0038] In order to position the rope and prevent it from curling, the rope detection and positioning structure 23 includes a positioning rod 231, a light strip 232, and a hinge seat 233. The hinge seat 233 is arranged on the inner wall of the positioning seat 2, and the hinge seat 233 is hinged to the middle section of the positioning rod 231. The light strip 232 is located on the outer wall of the positioning seat 2. One end of the positioning rod 231 is located in the insertion opening 22. A reset spring 234 is provided between the positioning rod 231 and the inner wall of the positioning seat 2. The light strip 232 is connected to an electrical contact 235 that extends into the positioning seat 2. A battery 236 is provided in the other end of the positioning rod 231. A power supply contact 237 electrically connected to the battery 236 is provided on the outer wall of the positioning rod 231. When the positioning rod 231 rotates around the hinge seat 233, the power supply contact 237 will come into contact with the power contact 235.

[0039] In order to quickly fix the rope, the magnetic fixing structure 27 includes a rotating slot 271 located on the inner wall of the fixed slot 26, a fixed rod 272, a magnetic seat 273 located on the outer wall of the winding shaft 25, and a switch 276. The fixed rod 272 is rotatably arranged in the rotating slot 271, and one end extends into the fixed slot 26, and the other end is located above the magnetic seat 273. An electromagnet 274 for magnetically positioning the fixed rod 272 is provided on the magnetic seat 273. A rotating shaft 275 with a torsion spring is provided between the fixed rod 272 and the inner wall of the rotating slot 271. The switch 276 is located in the bottom of the fixed slot 26, and a fixed splint 277 is provided below the end of the fixed rod 272 extending into the fixed slot 26. The switch 276 is connected to the electromagnet 274 by a wire. A battery for powering the electromagnet 274 is provided in the magnetic seat 273. The switch 276 is specifically a touch switch.

[0040] In order to facilitate the disassembly and replacement of contact blocks 2311 of different sizes, the positioning rod 231 includes a contact block 2311 and a rod body 2312 located in the extension port 22. The contact block 2311 is connected to the rod body 2312. A screw 2313 is provided at the end of the contact block 2311 facing the rod body 2312. The rod body 2312 is provided with an internal thread groove 2314 threadedly connected to the screw 2313.

[0041] In order to position the rope contact, the contact block 2311 is in a √-shaped structure and has an arc at the end.

[0042] In order to be magnetically attracted and positioned by the electromagnet 274 , the fixing rod 272 is made of metal.

[0043] In order to improve the firmness of the clamping rope, the bottom surface of the fixing clamp plate 277 has a serrated structure.

[0044] In order to improve the stability of the connection, the top end of the reel 25 is connected to the manual rotary cover 3 by bolts.

[0045] For the convenience of operation, a control panel 11 for controlling the operation of the motor 13 , the electric telescopic rod 14 , and the electromagnet 274 is provided on the outer wall of the base 1 , and the control panel 11 is provided with a plurality of operating switches 12 .

[0046] An application of a hidden adjusting turn buckle. The hidden adjusting turn buckle is applied to the fields of shoes, clothing and packaging to roll up and position at least one rope on shoes, clothing and packaging boxes / bags.

[0047] By operating the control panel 11, the motor 13 drives the turntable 24 to rotate, and the reel 25 on the turntable 24 rotates accordingly, and the fixed notch 26 on the reel 25 rotates to face the insertion port 22, and then the electromagnet 274 is energized to generate a magnetic attraction force on the fixed rod 272, so that the fixed rod 272 rotates slightly around the rotating shaft 275, so that the part of the fixed rod 272 located in the fixed notch 26 is lifted, and this process is the initial reset;

[0048] When positioning the end of the rope, it is only necessary to insert the end of the rope through the insertion opening 22, and the end of the rope is directly embedded in the fixed notch 26 in the reset state. After it reaches the switch 276 on the inner wall of the fixed notch 26, the switch 276 controls the electromagnet 274 to cut off the power, and the rotating shaft 275 with the torsion spring releases the restriction, performs torsion reset, and drives the fixed rod 272 to rotate and press down toward the rope. The fixed clamping plate 277 on the fixed rod 272 acts on the rope to limit its positioning, which is convenient to operate. When winding up later, as the motor 13 drives the turntable 24 to rotate, the winding shaft 25 will directly drive the rope to be wound up. When the appropriate tightening state is reached, the control panel 11 is operated, and the output end of the electric telescopic rod 14 is extended and embedded in the limiting groove 241 under the turntable 24 at this position to limit the rotation;

[0049] When the rope is hidden, it is difficult to detect whether it is normally rolled up. Therefore, the rope detection and positioning structure 23 has the function of detecting whether the rolling work is running normally. When the rope is rolled up, the rope will contact the contact block 2311 of the extension port 22. As the rope slides, the contact block 2311 will drive the rod body 2312 to swing slightly with the hinge seat 233 as the center in cooperation with the reset spring 234. During the swinging process, the power supply contact 237 will contact the power contact 235, so that the light strip 232 is powered on and lights up. When the internal winding structure is damaged, the rope will not move, and the light strip 232 cannot be powered on. The user can perform repairs in time.

[0050] According to the structure of the above-mentioned insertable automatic fixing rope, the base 1 can be hidden inside the product, and the insertion port 22 and the manual screw cover 3 are exposed.

[0051] Variation of the hidden adjustment knob of Example 1

[0052] The invention discloses an application of a hidden adjusting turn buckle, wherein the hidden adjusting turn buckle is specifically used for tightening shoelaces.

[0053] Example 2

[0054] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7The present invention provides a hidden adjusting knob and its application technical solution: its structure includes:

[0055] Base 1;

[0056] A positioning seat 2 is arranged at the upper end of the base 1;

[0057] A manual screw cap 3 is rotatably arranged on the upper end of the positioning seat 2;

[0058] A winding chamber 21 is provided in the positioning seat 2, at least one insertion opening 22 communicating with the winding chamber 21 is provided on the outer side of the positioning seat 2, a rope detection and positioning structure 23 is provided on both sides of the inner wall of the insertion opening 22, a turntable 24 is rotatably provided at the center of the bottom surface of the positioning seat 2, a winding shaft 25 is provided at the center of the upper end of the turntable 24, a fixed notch 26 facing the insertion opening 22 is provided on the winding shaft 25, and a magnetic fixing structure 27 for fixing the rope head inserted into the fixed notch 26 is also provided on the winding shaft 25;

[0059] The base 1 is provided with a motor 13 for driving the turntable 24 to rotate, an electric telescopic rod 14 for limiting the rotation of the turntable 24, and a battery for supplying power to the motor 13 and the electric telescopic rod 14;

[0060] The bottom edge of the turntable 24 has a plurality of limiting grooves 241 in an annular array, and the output end of the electric telescopic rod 14 is embedded in one of the limiting grooves 241 .

[0061] In order to position the rope and prevent it from curling, the rope detection and positioning structure 23 includes a positioning rod 231, a light strip 232, and a hinge seat 233. The hinge seat 233 is arranged on the inner wall of the positioning seat 2, and the hinge seat 233 is hinged to the middle section of the positioning rod 231. The light strip 232 is located on the outer wall of the positioning seat 2. One end of the positioning rod 231 is located in the insertion opening 22. A reset spring 234 is provided between the positioning rod 231 and the inner wall of the positioning seat 2. The light strip 232 is connected to an electrical contact 235 that extends into the positioning seat 2. A battery 236 is provided in the other end of the positioning rod 231. A power supply contact 237 electrically connected to the battery 236 is provided on the outer wall of the positioning rod 231. When the positioning rod 231 rotates around the hinge seat 233, the power supply contact 237 will come into contact with the power contact 235.

[0062] In order to quickly fix the rope, the magnetic fixing structure 27 includes a rotating slot 271 located on the inner wall of the fixed slot 26, a fixed rod 272, a magnetic seat 273 located on the outer wall of the winding shaft 25, and a switch 276. The fixed rod 272 is rotatably arranged in the rotating slot 271, and one end extends into the fixed slot 26, and the other end is located above the magnetic seat 273. An electromagnet 274 for magnetically positioning the fixed rod 272 is provided on the magnetic seat 273. A rotating shaft 275 with a torsion spring is provided between the fixed rod 272 and the inner wall of the rotating slot 271. The switch 276 is located in the bottom of the fixed slot 26, and a fixed splint 277 is provided below the end of the fixed rod 272 extending into the fixed slot 26. The switch 276 is connected to the electromagnet 274 by a wire. A battery for powering the electromagnet 274 is provided in the magnetic seat 273. The switch 276 is specifically a touch switch.

[0063] In order to facilitate the disassembly and replacement of contact blocks 2311 of different sizes, the positioning rod 231 includes a contact block 2311 and a rod body 2312 located in the extension port 22. The contact block 2311 is connected to the rod body 2312. A screw 2313 is provided at the end of the contact block 2311 facing the rod body 2312. The rod body 2312 is provided with an internal thread groove 2314 threadedly connected to the screw 2313.

[0064] In order to position the rope contact, the contact block 2311 is in a √-shaped structure and has an arc at the end.

[0065] In order to be magnetically attracted and positioned by the electromagnet 274 , the fixing rod 272 is made of metal.

[0066] In order to improve the firmness of the clamping rope, the bottom surface of the fixing clamp plate 277 has a serrated structure.

[0067] In order to improve the stability of the connection, the top end of the reel 25 is connected to the manual screw cap 3 by a snap-fit ​​fixation or a nested fixation.

[0068] For the convenience of operation, a control panel 11 for controlling the operation of the motor 13 , the electric telescopic rod 14 , and the electromagnet 274 is provided on the outer wall of the base 1 , and the control panel 11 is provided with a plurality of operating switches 12 .

[0069] An application of a hidden adjusting turn buckle. The hidden adjusting turn buckle is applied to the fields of shoes, clothing and packaging to roll up and position at least one rope on shoes, clothing and packaging boxes / bags.

[0070] By operating the control panel 11, the motor 13 drives the turntable 24 to rotate, and the reel 25 on the turntable 24 rotates accordingly, and the fixed notch 26 on the reel 25 rotates to face the insertion port 22, and then the electromagnet 274 is energized to generate a magnetic attraction force on the fixed rod 272, so that the fixed rod 272 rotates slightly around the rotating shaft 275, so that the part of the fixed rod 272 located in the fixed notch 26 is lifted, and this process is the initial reset;

[0071] When positioning the end of the rope, it is only necessary to insert the end of the rope through the insertion opening 22, and the end of the rope is directly embedded in the fixed notch 26 in the reset state. After it reaches the switch 276 on the inner wall of the fixed notch 26, the switch 276 controls the electromagnet 274 to cut off the power, and the rotating shaft 275 with the torsion spring releases the restriction, performs torsion reset, and drives the fixed rod 272 to rotate and press down toward the rope. The fixed clamping plate 277 on the fixed rod 272 acts on the rope to limit its positioning, which is convenient to operate. When winding up later, as the motor 13 drives the turntable 24 to rotate, the winding shaft 25 will directly drive the rope to be wound up. When the appropriate tightening state is reached, the control panel 11 is operated, and the output end of the electric telescopic rod 14 is extended and embedded in the limiting groove 241 under the turntable 24 at this position to limit the rotation;

[0072] When the rope is hidden, it is difficult to detect whether it is normally rolled up. Therefore, the rope detection and positioning structure 23 has the function of detecting whether the rolling work is running normally. When the rope is rolled up, the rope will contact the contact block 2311 of the extension port 22. As the rope slides, the contact block 2311 will drive the rod body 2312 to swing slightly with the hinge seat 233 as the center in cooperation with the reset spring 234. During the swinging process, the power supply contact 237 will contact the power contact 235, so that the light strip 232 is powered on and lights up. When the internal winding structure is damaged, the rope will not move, and the light strip 232 cannot be powered on. The user can perform repairs in time.

[0073] According to the structure of the above-mentioned insertable automatic fixing rope, the base 1 can be hidden inside the product, and the insertion port 22 and the manual screw cover 3 are exposed.

[0074] Modification of the hidden adjustment knob of Example 2

[0075] An application of a hidden adjusting turn buckle, wherein the hidden adjusting turn buckle is specifically used for tightening packaging boxes / bags.

[0076] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0077] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hidden adjustment knob, characterized in that: Its structure includes: Base (1); A positioning seat (2) is arranged at the upper end of the base (1); A manual screw cap (3) is rotatably disposed on the upper end of the positioning seat (2); The positioning seat (2) is provided with a winding chamber (21) inside, the positioning seat (2) is provided with at least one insertion opening (22) communicating with the winding chamber (21) on the outside, both sides of the inner wall of the insertion opening (22) are provided with a rope detection and positioning structure (23), a rotating disk (24) is rotatably provided at the center of the bottom surface of the positioning seat (2), a winding shaft (25) is provided at the center of the upper end of the rotating disk (24), a fixing notch (26) facing the insertion opening (22) is provided on the winding shaft (25), and a magnetic fixing structure (27) for fixing the rope head inserted into the fixing notch (26) is also provided on the winding shaft (25); The base (1) is provided with a motor (13) for driving the rotating disk (24) to rotate, an electric telescopic rod (14) for limiting the rotation of the rotating disk (24), and a storage battery for supplying power to the motor (13) and the electric telescopic rod (14); The bottom edge of the rotating disk (24) has a plurality of limiting grooves (241) in an annular array, and the output end of the electric telescopic rod (14) is embedded in one of the limiting grooves (241); The magnetic fixing structure (27) comprises a rotating slot (271) located on the inner wall of the fixing slot (26), a fixing rod (272), a magnetic seat (273) located on the outer wall of the winding shaft (25), and a switch (276); the fixing rod (272) is rotatably arranged in the rotating slot (271), and one end of the fixing rod (272) extends into the fixing slot (26), and the other end is located above the magnetic seat (273); the magnetic seat (273) is provided with an electric switch for magnetically positioning the fixing rod (272). a magnet (274), a rotating shaft (275) with a torsion spring is provided between the fixing rod (272) and the inner wall of the rotating slot (271), the switch (276) is located in the bottom of the fixing slot (26), a fixing clamp (277) is provided below the end of the fixing rod (272) extending into the fixing slot (26), the switch (276) and the electromagnet (274) are connected by a wire, and a storage battery for supplying power to the electromagnet (274) is provided in the magnetic suction seat (273); The rope detection positioning structure (23) comprises a positioning rod (231), a light strip (232), and a hinge seat (233); the hinge seat (233) is arranged on the inner wall of the positioning seat (2); the hinge seat (233) is hingedly connected to the middle section of the positioning rod (231); the light strip (232) is located on the outer wall of the positioning seat (2); one end of the positioning rod (231) is located in the insertion opening (22); a hinge is provided between the positioning rod (231) and the inner wall of the positioning seat (2). A return spring (234) is provided, the light strip (232) is connected to an electrical contact (235) extending into the positioning seat (2), a battery (236) is provided in the other end of the positioning rod (231), and a power supply contact (237) electrically connected to the battery (236) is provided on the outer wall of the positioning rod (231), and when the positioning rod (231) rotates around the hinge seat (233), the power supply contact (237) will come into contact with the electrical contact (235).

2. The hidden adjustment knob according to claim 1, characterized in that: The positioning rod (231) comprises a contact block (2311) located in the insertion opening (22) and a rod body (2312); the contact block (2311) is connected to the rod body (2312); a screw rod (2313) is provided at the end of the contact block (2311) facing the rod body (2312); and an internal thread groove (2314) threadably connected to the screw rod (2313) is provided on the rod body (2312).

3. The hidden adjustment knob according to claim 2, characterized in that: The contact block (2311) has a √-shaped structure, and the end portion has an arc.

4. The hidden adjustment knob according to claim 1, characterized in that: The fixing rod (272) is made of metal.

5. The hidden adjustment knob according to claim 1, characterized in that: The bottom surface of the fixed clamping plate (277) has a sawtooth structure.

6. The hidden adjusting knob according to claim 1, characterized in that: The top end of the reel (25) is connected to the manual screw cap (3) by a method selected from the group consisting of bolt fixing, snap fixing, and nested fixing.

7. The hidden adjusting knob according to claim 1, characterized in that: The outer wall of the base (1) is provided with a control panel (11) for controlling the operation of the motor (13), the electric telescopic rod (14), and the electromagnet (274), and the control panel (11) is provided with a plurality of operating switches (12).

8. An application of a hidden adjusting turn buckle, according to any one of claims 1-7, which is applied to the field of footwear, clothing, and packaging to roll up and position at least one rope on footwear, clothing, and packaging boxes / bags.

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