Length-adjustable pull tab and corresponding pull head

Abstract

The utility model provides a pull head and a length-adjustable pull piece. The pull piece with the adjustable length comprises a connecting piece, a movable piece and a compression spring. The connecting piece comprises a connecting ring, a connecting column and a first elastic strip. The connecting column is provided with a containing groove, a first through hole and a second through hole. A top block is arranged at one end of the first elastic strip and is opposite to the second through hole. The movable rod is movably arranged in the containing groove in the axial direction of the connecting column, and the movable rod comprises a first position and a second position on the movement track of the movable rod. One end of the second elastic strip is connected to the movable rod, and the other end is provided with a bump. When the movable rod is located at the second position, the protruding block is located in the second penetrating hole. When the movable rod is located at the first position, the protruding block is located in the first penetrating hole, and the other end of the movable rod is located outside the containing groove. The compression spring is arranged between the movable rod and the bottom face of the containing groove. The pull head comprises the pull piece with the adjustable length. According to the pull tab with the adjustable length and the corresponding pull head, the overall length of the pull tab with the adjustable length is adjustable.

Description

Technical Field

[0001] The utility model relates to the technical field of clothing accessories, in particular to a pull tab with adjustable length and a corresponding pull head. Background Art

[0002] The puller is a frequently used accessory on the zipper of clothing. The puller usually includes a base and a pull tab. The base is used to separate and close the zipper, and pulling the pull tab can drive the base to slide. The length of the rigid pull tab in the prior art is usually not adjustable. If the pull tab is relatively long, it will swing back and forth on the clothes when not in use, causing inconvenience to the user; if the pull tab is relatively short, it is not convenient for the user to pull the base to slide.

[0003] Therefore, it is necessary to provide a pull tab with adjustable length and a corresponding pull head to solve the above technical problems. Utility Model Content

[0004] The utility model provides a pull tab with adjustable length and a corresponding pull head. The overall length of the pull tab with adjustable length is adjustable, the use is convenient and interesting, and the user can be relieved of pressure.

[0005] The technical solution of the utility model is:

[0006] A pull tab with adjustable length, comprising:

[0007] A connecting piece, which includes a connecting ring, a connecting column and a first elastic bar; the connecting ring is used to be rotatably connected to the base; one end of the connecting column is connected to the connecting ring, the connecting column is provided with a receiving groove, the opening of the receiving groove is located at the other end of the connecting column, the connecting column is provided with a first through hole and a second through hole, the first through hole and the second through hole are arranged along the axial direction of the connecting column, and are both connected to the receiving groove, the second through hole is closer to the connecting ring relative to the first through hole; one end of the first elastic bar is connected to the outer peripheral surface of the connecting column, and the other end is provided with a top block, the top block is arranged opposite to the second through hole, and can move along the radial direction of the connecting column to the second through hole, and the first elastic bar is used to provide elastic force to move the top block to the outside of the second through hole;

[0008] A movable member, which includes a movable rod and a second elastic bar; the movable rod is movably arranged in the accommodating groove along the axial direction of the connecting column, one end of the movable rod is located inside the accommodating groove, and the movable rod includes a first position and a second position on its movable trajectory; one end of the second elastic bar is connected to the movable rod, and the other end is provided with a protrusion, the protrusion can move along the radial direction of the connecting column, and the second elastic bar is used to provide elastic force to move the protrusion toward the outside of the connecting column; when the movable rod is located at the second position, the protrusion is located in the second through hole; when the top block is located in the second through hole, the protrusion moves into the accommodating groove under the action of the top block, and when the movable rod is located at the first position, the protrusion is located in the first through hole, and the other end of the movable rod is located outside the accommodating groove; and,

[0009] A compression spring is disposed between the movable rod and the bottom surface of the accommodating groove, and is used for providing elastic force so that the movable rod moves from the second position to the first position.

[0010] In the length-adjustable pull tab described in the utility model, the first elastic strip includes a first section and a second section, one end of the first section is connected to the outer circumferential surface of the connecting column and is located on the side of the first through-hole away from the second through-hole, one end of the second section is vertically connected to the other end of the first section, the top block is arranged on the inner side of the other end of the second section, the length direction of the second section is consistent with the axial direction of the connecting column, the second section is spaced apart from the connecting column, and the first through-hole is located on the inner side of the second section.

[0011] In the length-adjustable pull tab of the utility model, the axial direction of the first through hole and the axial direction of the second through hole are both perpendicular to the axial direction of the connecting ring.

[0012] In the pull tab with adjustable length of the utility model, the top block is pointed and its cross section is triangular.

[0013] In the length-adjustable pull tab described in the utility model, the movable rod includes a rod body and a first protrusion, the first protrusion is connected to one end of the rod body, and the periphery of the first protrusion protrudes from the peripheral surface of the rod body, and the compression spring is arranged between the first protrusion and the bottom surface of the accommodating groove.

[0014] In the length-adjustable pull tab of the utility model, the cross sections of the first protruding piece and the accommodating groove are both ellipses that match each other.

[0015] In the length-adjustable pull tab described in the utility model, a section of the rod body close to the first protrusion is provided with a avoidance groove; the second elastic bar is arranged at the avoidance groove, one end of the second elastic bar is connected to the first protrusion, and the other end extends in a direction away from the first protrusion.

[0016] In the length-adjustable pull tab described in the utility model, the protrusion is provided with a first surface and a second surface, and the two are arranged opposite to each other along the axial direction of the movable rod. The first surface is inclined. When the movable rod moves from the first position to the second position, the first surface causes the protrusion to move into the accommodating groove. The second surface is straight and perpendicular to the length direction of the second elastic bar. When the protrusion is located in the first through hole, the second surface abuts against the hole wall of the first through hole. When the protrusion is located in the second through hole, the second surface abuts against the hole wall of the second through hole.

[0017] In the length-adjustable pull tab of the utility model, the movable rod further comprises a second protruding piece connected to the other axial end of the rod body, and the periphery of the second protruding piece protrudes from the peripheral surface of the rod body.

[0018] Another technical solution of the utility model is:

[0019] A slider, comprising:

[0020] a base; and,

[0021] The above-mentioned pull tab with adjustable length, the connecting ring is rotatably connected to the base.

[0022] When the pull tab and the pull head of the utility model are not in use, the movable rod is in the second position, and the overall length-adjustable pull tab is shorter; when the base needs to be pulled, the top block of the first elastic bar is pressed, and the top block pushes the protrusion to disengage from the second through-hole and be located inside the accommodating groove, and the elastic force of the compression spring pushes the movable rod, so that the movable rod moves in the direction away from the connecting ring, and when the protrusion moves to the first through-hole, the elastic force of the second elastic bar makes the protrusion located in the first through-hole, so that the movable rod is located in the first position, and at this time, the part of the movable rod located outside the accommodating groove becomes longer, and the overall length-adjustable pull tab is longer; after use, the movable rod is pushed to move the movable rod in the direction close to the connecting ring, and when the protrusion moves to the second through-hole, the elastic force of the second elastic bar makes the protrusion located in the second through-hole, and the movable rod remains in the second position, and the length-adjustable pull tab is in a shorter state. The pull tab and the pull head with adjustable length of the utility model have adjustable positions of the movable parts in the receiving groove, so that the overall length of the pull tab with adjustable length is adjustable, which is convenient and interesting to use and can help users relieve stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the utility model.

[0024] Figure 1 This is a schematic diagram of the overall structure of a slider provided in a preferred embodiment of the utility model (the movable rod is located in the second position).

[0025] Figure 2 Another overall structural schematic diagram of a slider provided in a preferred embodiment of the utility model (the movable rod is located in the first position).

[0026] Figure 3 This is a schematic diagram of the exploded structure of a slider provided in a preferred embodiment of the utility model.

[0027] Figure 4 A schematic structural diagram of a connector of a slider provided in a preferred embodiment of the utility model.

[0028] Figure 5 A schematic structural diagram of a movable part of a slider provided in a preferred embodiment of the utility model.

[0029] in,

[0030] 1. The length of the pull tab is adjustable.

[0031] 11. Connectors,

[0032] 111. Connecting ring,

[0033] 112, connecting column, 1121, receiving groove, 1122, first through hole, 1123, second through hole,

[0034] 113, first spring bar, 1131, top block, 1132, first section, 1133, second section,

[0035] 12. Moving parts,

[0036] 121, movable rod, 1211, rod body, 12111, avoidance groove, 1212, first protruding piece, 1213, second protruding piece,

[0037] 122, second elastic bar, 1221, convex block, 12211, first surface, 12212, second surface,

[0038] 13. Compression spring,

[0039] 2. Base.

[0040] In the figures, structurally similar elements are denoted by the same reference numerals. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0042] Directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are only used for reference to the directions of the drawings. The directional terms used are used to illustrate and understand the present invention, and are not used to limit the present invention.

[0043] The words "first", "second" and the like in the terminology of the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, and should not be construed as limiting the order of precedence.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The length of the rigid pull tab in the prior art is usually not adjustable. If the pull tab is relatively long, it will swing back and forth on the clothes when not in use, causing inconvenience to the user; if the pull tab is relatively short, it is not convenient for the user to pull the base to slide.

[0046] The following is a preferred embodiment of a slider provided by the utility model that can solve the above technical problems.

[0047] Please refer to Figure 1 and Figure 2 A preferred embodiment of the utility model provides a slider, which includes a base 2 and a pull tab 1 with adjustable length.

[0048] Please refer to Figure 3 and Figure 4The length-adjustable pull tab 1 includes a connecting member 11, a movable member 12 and a compression spring 13. The connecting member 11 includes a connecting ring 111, a connecting column 112 and a first elastic bar 113. The connecting ring 111 is rotatably connected to the base 2. One end of the connecting column 112 is connected to the connecting ring 111, and the connecting column 112 is provided with a receiving groove 1121, and the opening of the receiving groove 1121 is located at the other end of the connecting column 112. The connecting column 112 is provided with a first through hole 1122 and a second through hole 1123, and the first through hole 1122 and the second through hole 1123 are arranged along the axial direction of the connecting column 112, and are both connected to the receiving groove 1121, and the second through hole 1123 is close to the connecting ring 111 relative to the first through hole 1122. One end of the first elastic bar 113 is connected to the outer circumferential surface of the connecting column 112, and the other end is provided with a top block 1131. The top block 1131 is arranged opposite to the second through hole 1123, and can move into the second through hole 1123 along the radial direction of the connecting column 112. The first elastic bar 113 is used to provide elastic force to move the top block 1131 out of the second through hole 1123.

[0049] Please refer to Figure 5 The movable member 12 includes a movable rod 121 and a second elastic bar 122. The movable rod 121 is arranged in the receiving groove 1121 for axial movement along the connecting column 112. One end of the movable rod 121 is located inside the receiving groove 1121. The movable rod 121 includes a first position and a second position on its moving track. One end of the second elastic bar 122 is connected to the movable rod 121, and the other end is provided with a protrusion 1221. The protrusion 1221 can move along the radial direction of the connecting column 112. The second elastic bar 122 is used to provide elastic force to move the protrusion 1221 toward the outside of the connecting column 112. When the movable rod 121 is located at the second position, the protrusion 1221 is located in the second through hole 1123. When the top block 1131 is located in the second through hole 1123 , the protrusion 1221 moves into the receiving groove 1121 under the action of the top block 1131 . When the movable rod 121 is located in the first position, the protrusion 1221 is located in the first through hole 1122 , and the other end of the movable rod 121 is located outside the receiving groove 1121 .

[0050] The compression spring 13 is disposed between the movable rod 121 and the bottom surface of the accommodating groove 1121 to provide elastic force so that the movable rod 121 moves from the second position to the first position.

[0051] When the pull tab 1 and the pull head with adjustable length of the utility model are not in use, the movable rod 121 is located in the second position, and the pull tab 1 with adjustable length is shorter as a whole; when it is necessary to pull the base 2, the top block 1131 of the first elastic bar 113 is pressed, and the top block 1131 pushes the protrusion 1221 to disengage from the second through hole 1123 and locate inside the accommodating groove 1121, and the elastic force of the compression spring 13 pushes the movable rod 121 to move the movable rod 121 away from the connecting ring 111, and when the protrusion 1221 moves to the first through hole 1122, the elastic force of the second elastic bar 122 makes the protrusion 1221 move away from the connecting ring 111. The block 1221 is located in the first through hole 1122, so that the movable rod 121 is located in the first position. At this time, the part of the movable rod 121 located outside the receiving groove 1121 becomes longer, and the length-adjustable pull tab 1 is longer as a whole; after use, the second protrusion 1213 is pushed to move the movable rod 121 in the direction close to the connecting ring 111. When the protrusion 1221 moves to the second through hole 1123, the elastic force of the second elastic bar 122 makes the protrusion 1221 located in the second through hole 1123, and the movable rod 121 remains in the second position, and the length-adjustable pull tab 1 is in a shorter state. The length-adjustable pull tab 1 and the slider of the utility model have an adjustable position of the movable part 12 in the receiving groove 1121, so that the overall length of the length-adjustable pull tab is adjustable, which is easy to use and interesting, and can help users relieve stress.

[0052] Please refer to Figure 4 The first elastic bar 113 includes a first section 1132 and a second section 1133. One end of the first section 1132 is connected to the outer peripheral surface of the connecting column 112 and is located on the side of the first through hole 1122 away from the second through hole 1123. One end of the second section 1133 is vertically connected to the other end of the first section 1132. The top block 1131 is arranged inside the other end of the second section 1133. The length direction of the second section 1133 is consistent with the axial direction of the connecting column 112. The second section 1133 is spaced apart from the connecting column 112, and the first through hole 1122 is located inside the second section 1133. In the above structure, the second section 1133 is a straight section for easy processing. In addition, the second section 1133 can cover the first through hole 1122 , and when the movable rod 121 is located at the first position, the protrusion 1221 is prevented from being touched by other structures and disengaged from the first through hole 1122 , causing the movable rod 121 to move away from the connecting ring 111 and disengage from the connecting column 112 .

[0053] Please continue to refer to Figure 4 The axial direction of the first through hole 1122 and the axial direction of the second through hole 1123 are both perpendicular to the axial direction of the connecting ring 111. With the above structure, the first spring bar 113 can be located on the side of the connecting column 112, which is convenient for the user to press the first spring bar 113.

[0054] Please continue to refer to Figure 4The top block 1131 is pointed and has a triangular cross section. With the above structure, even if there is a slight deviation between the relative positions of the top block 1131 and the second through hole 1123, the top block 1131 can be easily introduced into the second through hole 1123 when the first spring bar 113 is pressed.

[0055] Please refer to Figure 5 The movable rod 121 includes a rod body 1211 and a first protruding piece 1212. The first protruding piece 1212 is connected to one end of the rod body 1211, and the periphery of the first protruding piece 1212 protrudes from the periphery of the rod body 1211. The compression spring 13 is arranged between the first protruding piece 1212 and the bottom surface of the receiving groove 1121. By providing the first protruding piece 1212, even if the movable rod 121 is offset in the receiving groove 1121, the compression spring 13 can be in contact with the movable rod 121, so as to facilitate the transmission of force.

[0056] In other embodiments, the cross-sections of the first protruding piece 1212 and the receiving groove 1121 can be set to be mutually matching ellipses. When the movable rod 121 is installed in the receiving groove 1121, it is convenient for positioning and installation, and can also prevent the two from rotating relative to each other.

[0057] Please continue to refer to Figure 5 A section of the rod body 1211 close to the first protruding piece 1212 is provided with a avoiding groove 12111. The second elastic bar 122 is provided at the avoiding groove 12111, one end of the second elastic bar 122 is connected to the first protruding piece 1212, and the other end extends in a direction away from the first protruding piece 1212. The above structure makes the structure of the movable member 12 more compact.

[0058] Please continue to refer to Figure 5The protrusion 1221 is provided with a first surface 12211 and a second surface 12212, which are arranged opposite to each other along the axial direction of the movable rod 121. The first surface 12211 is inclined. When the movable rod 121 moves from the first position to the second position, the first surface 12211 enables the protrusion 1221 to move into the receiving groove 1121. The second surface 12212 is straight and perpendicular to the length direction of the second elastic bar 122. When the protrusion 1221 is located in the first through hole 1122, the second surface 12212 abuts against the hole wall of the first through hole 1122. When the protrusion 1221 is located in the second through hole 1123, the second surface 12212 abuts against the hole wall of the second through hole 1123. In the above structure, when the movable rod 121 is pushed to move from the first position to the second position, the first surface 12211 is inclined, so that the protrusion 1221 can move into the receiving groove 1121. When the protrusion 1221 is located in the first through hole 1122, under the push of the compression spring 13, the second surface 12212 is perpendicular to the length direction of the second elastic bar 122, so that the second surface 12212 abuts against the hole wall of the first through hole 1122. In the absence of other forces, the protrusion 1221 is not easy to be separated from the first through hole 1122, so that the movable rod 121 is stably maintained in the first position. When the protrusion 1221 is located in the second through hole 1123, under the push of the compression spring 13, the second surface 12212 is perpendicular to the length direction of the second elastic bar 122, so that the second surface 12212 abuts against the hole wall of the second through hole 1123. In the absence of other forces, the protrusion 1221 is not easy to be separated from the second through hole 1123, so that the movable rod 121 is stably maintained in the second position.

[0059] Please continue to refer to Figure 5 The movable rod 121 further includes a second protruding piece 1213, which is connected to the other end of the rod body 1211, and the periphery of the second protruding piece 1213 protrudes from the periphery of the rod body 1211. The user can push the movable rod 121 to move by pushing the second protruding piece 1213, which is easy to operate.

[0060] The method of using the slider in the preferred embodiment of the utility model:

[0061] When not in use, the movable rod 121 is located in the second position, and at this time, the pull tab 1 with adjustable length is shorter as a whole; when it is necessary to pull the base 2, the top block 1131 of the first elastic bar 113 is pressed, and the top block 1131 pushes the protrusion 1221 to disengage from the second through hole 1123 and locate inside the accommodating groove 1121, and the elastic force of the compression spring 13 pushes the movable rod 121 to make the movable rod 121 move away from the connecting ring 111, and when the protrusion 1221 moves to the first through hole 1122, the elastic force of the second elastic bar 122 makes the protrusion 1221 locate in the first through hole 1122, so that the movable rod 121 The movable rod 121 is in the first position, at which time the portion of the movable rod 121 outside the accommodating groove 1121 becomes longer, and the length-adjustable pull tab 1 is longer as a whole; after use, the second protrusion 1213 is pushed to move the movable rod 121 toward the connecting ring 111, and the first surface 12211 causes the protrusion 1221 to move into the accommodating groove 1121. When the protrusion 1221 moves to the second through-hole 1123, the elastic force of the second elastic bar 122 causes the protrusion 1221 to be located in the second through-hole 1123, and the movable rod 121 remains in the second position, and the length-adjustable pull tab 1 is in a shorter state.

[0062] This completes the method for using the slider of the preferred embodiment.

[0063] The length-adjustable pull tab and pull head of the utility model, when not in use, the movable rod is located in the second position, and the overall length-adjustable pull tab is shorter; when it is necessary to pull the base, the top block of the first elastic bar is pressed, and the top block pushes the protrusion to make it disengage from the second through-hole and be located inside the accommodating groove, and the elastic force of the compression spring pushes the movable rod, so that the movable rod moves in the direction away from the connecting ring, and when the protrusion moves to the first through-hole, the elastic force of the second elastic bar makes the protrusion located in the first through-hole, so that the movable rod is located in the first position, and at this time, the part of the movable rod located outside the accommodating groove becomes longer, and the overall length-adjustable pull tab is longer; after use, the movable rod is pushed to move the movable rod in the direction close to the connecting ring, and when the protrusion moves to the second through-hole, the elastic force of the second elastic bar makes the protrusion located in the second through-hole, and the movable rod remains in the second position, and the length-adjustable pull tab is in a shorter state. The pull tab and the pull head with adjustable length of the utility model have adjustable positions of the movable parts in the receiving groove, so that the overall length of the pull tab with adjustable length is adjustable, which is convenient and interesting to use and can help users relieve stress.

[0064] To sum up, although the present invention has been disclosed as above in the form of preferred embodiments, the protection scope of the present invention is not limited thereto, and any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the concept of the technical solution of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pull tab with adjustable length, characterized in that: include: A connecting piece, which includes a connecting ring, a connecting column and a first elastic bar; the connecting ring is used to be rotatably connected to the base; one end of the connecting column is connected to the connecting ring, the connecting column is provided with a receiving groove, the opening of the receiving groove is located at the other end of the connecting column, the connecting column is provided with a first through hole and a second through hole, the first through hole and the second through hole are arranged along the axial direction of the connecting column, and are both connected to the receiving groove, the second through hole is closer to the connecting ring relative to the first through hole; one end of the first elastic bar is connected to the outer peripheral surface of the connecting column, and the other end is provided with a top block, the top block is arranged opposite to the second through hole, and can move along the radial direction of the connecting column to the second through hole, and the first elastic bar is used to provide elastic force to move the top block to the outside of the second through hole; A movable member, which includes a movable rod and a second elastic bar; the movable rod is movably arranged in the accommodating groove along the axial direction of the connecting column, one end of the movable rod is located inside the accommodating groove, and the movable rod includes a first position and a second position on its movable trajectory; one end of the second elastic bar is connected to the movable rod, and the other end is provided with a protrusion, the protrusion can move along the radial direction of the connecting column, and the second elastic bar is used to provide elastic force to move the protrusion toward the outside of the connecting column; when the movable rod is located at the second position, the protrusion is located in the second through-hole; when the top block is located in the second through-hole, the protrusion moves into the accommodating groove under the action of the top block, and when the movable rod is located at the first position, the protrusion is located in the first through-hole, and the other end of the movable rod is located outside the accommodating groove; as well as, A compression spring is disposed between the movable rod and the bottom surface of the accommodating groove, and is used for providing elastic force so that the movable rod moves from the second position to the first position.

2. The length-adjustable pull tab according to claim 1, characterized in that: The first elastic bar includes a first section and a second section, one end of the first section is connected to the outer circumferential surface of the connecting column and is located on the side of the first through-hole away from the second through-hole, one end of the second section is vertically connected to the other end of the first section, the top block is arranged on the inner side of the other end of the second section, the length direction of the second section is consistent with the axial direction of the connecting column, the second section is spaced apart from the connecting column, and the first through-hole is located on the inner side of the second section.

3. The length-adjustable pull tab according to claim 2, characterized in that: The axial direction of the first through hole and the axial direction of the second through hole are both perpendicular to the axial direction of the connecting ring.

4. The length-adjustable pull tab according to claim 1, characterized in that: The top block is pointed and has a triangular cross section.

5. The length-adjustable pull tab according to claim 1, characterized in that: The movable rod includes a rod body and a first protrusion, wherein the first protrusion is connected to one end of the rod body, and the periphery of the first protrusion protrudes from the peripheral surface of the rod body, and the compression spring is arranged between the first protrusion and the bottom surface of the accommodating groove.

6. The length-adjustable pull tab according to claim 5, characterized in that: The cross sections of the first protrusion and the receiving groove are both elliptical shapes that match each other.

7. The length-adjustable pull tab according to claim 5, characterized in that: A section of the rod body close to the first protrusion is provided with a avoidance groove; the second elastic bar is arranged at the avoidance groove, one end of the second elastic bar is connected to the first protrusion, and the other end extends in a direction away from the first protrusion.

8. The length-adjustable pull tab according to claim 7, characterized in that: The protrusion is provided with a first surface and a second surface, which are arranged opposite to each other along the axial direction of the movable rod. The first surface is inclined. When the movable rod moves from the first position to the second position, the first surface causes the protrusion to move into the accommodating groove. The second surface is straight and perpendicular to the length direction of the second elastic bar. When the protrusion is located in the first through hole, the second surface abuts against the hole wall of the first through hole. When the protrusion is located in the second through hole, the second surface abuts against the hole wall of the second through hole.

9. The length-adjustable pull tab according to claim 5, characterized in that: The movable rod further comprises a second protruding piece connected to the other axial end of the rod body, and the peripheral edge of the second protruding piece protrudes from the peripheral surface of the rod body.

10. A slider, characterized in that: include: Pedestal; as well as, The length-adjustable pull tab according to any one of claims 1 to 9, wherein the connecting ring is rotatably connected to the base.

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