One-way locking zipper puller

Abstract

According to the technical scheme, the one-way locking zipper puller is characterized in that the one-way locking zipper puller comprises a zipper puller body, an elastic piece and a pulling piece, two limiting bases are arranged on the zipper puller body, the elastic piece is installed between the two limiting bases, limiting areas are arranged on the two limiting bases, and the pulling piece is rotationally connected into the limiting areas and located below the elastic piece; the pulling piece comprises a driving part, a limiting groove, a pushing block and a limiting block are sequentially arranged on the driving part in the circumferential direction of the driving part, a guiding arc face is arranged between the limiting groove and the pushing block, and an arc transition face is arranged between the pushing block and the limiting block; according to the one-way locking zipper puller, the rotation smoothness of the zipper pull can be improved, and the stability of the zipper pull in the limiting state is guaranteed.

Description

Technical Field

[0001] The utility model relates to a zipper head, more specifically, it relates to a one-way locking zipper head. Background Art

[0002] The zipper head, through its unique structure, can slide along the track of the zipper teeth (chain teeth), so as to tightly connect two pieces of cloth or other materials that need to be connected, or easily separate them as needed. This function makes the zipper a very convenient connection and separation tool.

[0003] In order to facilitate the use of the zipper and prevent the zipper from accidentally sliding open when the operator makes a large movement, a locking structure needs to be added to the zipper head. The existing locking structure has the following disadvantages: 1. When the spring piece and the pull tab are in a limited state, the pull tab lacks sufficient limiting effect and the pull tab still shifts;

[0004] 2. The pull tab may get stuck during rotation, thus affecting the switching of the pull tab limit state. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a one-way locking zipper head, which can improve the smoothness of the pull-tab rotation and ensure stability in a limited position state.

[0006] To achieve the above object, the utility model provides the following technical solutions: a one-way locking zipper head, comprising a zipper head body, an elastic sheet and a pull tab, the zipper head body is provided with two sets of limit seats, the elastic sheet is installed between the two limit seats, the two limit seats are provided with a limit area, the pull tab is rotatably connected in the limit area and is located below the elastic sheet;

[0007] The pull tab includes a driving part, on which a limiting groove, a pushing block and a limiting block are sequentially arranged along its circumference, a guiding arc surface is arranged between the limiting groove and the pushing block, and an arc transition surface is arranged between the pushing block and the limiting block;

[0008] The elastic sheet is provided with a limiting surface matched with the limiting groove.

[0009] In summary, the utility model has the following beneficial effects: through the design of the limiting groove and the limiting surface, it is possible to facilitate the proper engagement of the elastic sheet and the pull tab, thereby avoiding the situation where the pull tab is automatically unlocked;

[0010] When the limit groove abuts the limit surface, the pull tab is in a locked state. When the zipper needs to be pulled, the pull tab is rotated counterclockwise, and the driving part moves along the guiding arc surface to make the pushing block abut against the limit surface, thereby pushing the middle part of the elastic sheet to move upward, thereby achieving the effect of unlocking one end of the elastic sheet. When the pull tab continues to rotate counterclockwise, the driving part moves along the arc transition surface to the limit block area. Through the action of the limit block, the elastic sheet is still in an unlocked state, which is convenient for pulling the zipper upward.

[0011] The design of the guiding arc surface and the arc transition surface facilitates the transition when the pull tab rotates, thus avoiding the pull tab from getting stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the zipper head;

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the elastic sheet and the pull tab;

[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the first side of the pull tab;

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the second side of the pull tab;

[0016] Figure 5 It is a schematic diagram of the three-dimensional structure of the zipper head body.

[0017] Figure numerals: 1, zipper head body; 11, first plug-in hole; 12, second plug-in hole; 2, elastic sheet; 21, limiting surface; 22, guide arc surface; 3, pull tab; 31, driving part; 32, limiting groove; 33, pushing block; 34, limiting block; 35, guiding arc surface; 36, arc transition surface; 4, limiting seat; 41, limiting area; 42, first limiting part; 43, second limiting part; 44, limiting block; 45, first rotating groove; 46, second rotating groove. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0019] Reference Figures 1 to 5As shown, in order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a one-way locking zipper head, comprising a zipper head body 1, an elastic sheet 2 and a pull tab 3, the zipper head body 1 is provided with two sets of limit seats 4, the elastic sheet 2 is installed between the two limit seats 4, the two limit seats 4 are provided with a limit area 41, the pull tab 3 is rotatably connected in the limit area 41, and is located below the elastic sheet 2;

[0020] The pull tab 3 includes a driving part 31, on which a limiting groove 32, a pushing block 33 and a limiting block 34 are sequentially arranged along its circumference, a guiding arc surface 35 is arranged between the limiting groove 32 and the pushing block 33, and a circular arc transition surface 36 is arranged between the pushing block 33 and the limiting block 34;

[0021] The elastic sheet 2 is provided with a limiting surface 21 which cooperates with the limiting groove 32 .

[0022] The design of the utility model can facilitate the proper engagement of the elastic sheet 2 and the pull tab 3 through the design of the limiting groove 32 and the limiting surface 21, thereby avoiding the situation where the pull tab 3 is automatically unlocked;

[0023] like Figure 2 As shown, when the limit groove 32 abuts against the limit surface 21, the pull tab 3 is in a locked state. When the zipper needs to be pulled, the pull tab 3 is rotated counterclockwise, and the driving part 31 moves along the guide arc surface 35 so that the pushing block 33 abuts against the limit surface 21, thereby pushing the middle part of the elastic sheet 2 to move upward, thereby achieving the effect of unlocking one end of the elastic sheet 2. When the pull tab 3 continues to rotate counterclockwise, the driving part 31 moves along the arc transition surface 36 to the limit block 34 area. Through the action of the limit block 34, the elastic sheet 2 is still in an unlocked state, which is convenient for pulling the zipper upward.

[0024] The design of the guiding arc surface 35 and the arc transition surface 36 facilitates transition when the pull tab 3 rotates, thereby preventing the pull tab 3 from getting stuck.

[0025] Guide arc surfaces 22 are provided on both sides of the limiting groove 32 .

[0026] like Figure 2 As shown, guide arc surfaces 22 are respectively provided on both sides of the limiting groove 32, which can reduce the resistance of the pull tab 3 during the rotation process and avoid the pull tab 3 from getting stuck.

[0027] The zipper head body 1 is provided with a first inserting hole 11 and a second inserting hole 12 . One end of the elastic sheet 2 is fixed in the first inserting hole 11 , and the other end of the elastic sheet 2 is movable and inserted in the second inserting hole 12 .

[0028] Combination Figure 2 and Figure 5As shown, a convex snap-in block is provided at one end of the elastic sheet 2, and a corresponding convex snap-in groove is provided on the zipper head body 1. When the snap-in block is inserted into the snap-in groove, one end of the elastic sheet 2 can be limited and fixed. When the other end of the elastic sheet 2 moves up and down, it can be elastically deformed along the middle part of the elastic sheet 2.

[0029] The limiting surface 21 is arranged in an inclined surface and is arranged to be inclined downward from the first plug hole 11 to the second plug hole 12;

[0030] The limiting groove 32 is arranged in an inclined surface. When the limiting surface 21 abuts against the limiting groove 32 , the limiting groove 32 is arranged to be inclined downward from the first plug hole 11 to the second plug hole 12 .

[0031] like Figure 2 and Figure 3 As shown, the design of the inclined surface enables the limiting groove 32 and the limiting surface 21 to fully abut against each other, thereby ensuring stability during limiting.

[0032] The two limiting seats 4 each include a first limiting portion 42 and a second limiting portion 43, and the limiting area 41 is located between the first limiting portion 42 and the second limiting portion 43;

[0033] The first limiting portion 42 and the second limiting portion 43 are both provided with limiting blocks 44 .

[0034] The design of the limiting block 44 can play a limiting role in the upward movement of the elastic piece 2.

[0035] The first limiting portion 42 and the second limiting portion 43 are both provided with a rotation groove, and the limiting block 44 is rotatably connected in the limiting groove 32 .

[0036] The limiting grooves 32 are each provided with an inserting hole, and the limiting clamping blocks 44 are each provided with an inserting protrusion, and the inserting protrusion can be inserted into the inserting hole during the rotation process.

[0037] The design of this structure can realize the opening or closing of the limit function by rotating the limit block 44 so that the plug-in protrusion is inserted into the plug-in hole. When the limit function is closed, the elastic sheet 2 can be disassembled and assembled, and when the limit function is opened, the upward movement height of the elastic sheet 2 can be limited, and the disassembly of the elastic sheet 2 can also be limited.

[0038] The rotation groove includes a first rotation groove 45 and a second rotation groove 46 . The first rotation groove 45 is arranged close to the first plug hole 11 , and the second rotation groove 46 is arranged close to the second plug hole 12 . The height position of the first rotation groove 45 is greater than the height position of the second rotation groove 46 .

[0039] The design of this structure can be adapted to the inclined surface of the limiting surface 21 . When the elastic sheet 2 moves upward, the four groups of limiting blocks 44 are fully in contact with the elastic sheet 2 .

[0040] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A one-way locking zipper head, comprising a zipper head body (1), an elastic sheet (2) and a pull tab (3), wherein: The zipper head body (1) is provided with two groups of limiting seats (4), the elastic sheet (2) is installed between the two limiting seats (4), the two limiting seats (4) are provided with limiting areas (41), the pull tab (3) is rotatably connected in the limiting area (41) and is located below the elastic sheet (2); The pull tab (3) comprises a driving part (31), and a limiting groove (32), a pushing block (33) and a limiting block (34) are sequentially arranged on the driving part (31) along its circumference, a guiding arc surface (35) is arranged between the limiting groove (32) and the pushing block (33), and a circular arc transition surface (36) is arranged between the pushing block (33) and the limiting block (34); The elastic sheet (2) is provided with a limiting surface (21) that matches the limiting groove (32).

2. The one-way locking zipper pull according to claim 1, characterized in that: Guide cambered surfaces (22) are provided on both sides of the limiting groove (32).

3. The one-way locking zipper pull according to claim 1, characterized in that: The zipper head body (1) is provided with a first plugging hole (11) and a second plugging hole (12); one end of the elastic sheet (2) is fixed in the first plugging hole (11), and the other end of the elastic sheet (2) is movably plugged into the second plugging hole (12).

4. The one-way locking zipper pull according to claim 3, characterized in that: The limiting surface (21) is arranged in an inclined surface and is arranged to be inclined downward from the first plug hole (11) to the second plug hole (12); The limiting groove (32) is arranged in an inclined surface. When the limiting surface (21) abuts against the limiting groove (32), the limiting groove (32) is arranged to be inclined downward from the first plug hole (11) to the second plug hole (12).

5. The one-way locking zipper pull according to claim 4, characterized in that: The two limiting seats (4) each comprise a first limiting portion (42) and a second limiting portion (43), and the limiting area (41) is located between the first limiting portion (42) and the second limiting portion (43); The first limiting portion (42) and the second limiting portion (43) are both provided with limiting clamping blocks (44).

6. The one-way locking zipper pull according to claim 5, characterized in that: The first limiting portion (42) and the second limiting portion (43) are both provided with a rotation groove, and the limiting clamping block (44) is rotationally connected in the limiting groove (32).

7. The one-way locking zipper pull according to claim 6, characterized in that: The limiting grooves (32) are each provided with an inserting hole, and the limiting clamping blocks (44) are each provided with an inserting protrusion, and the inserting protrusion can be inserted into the inserting hole during the rotation process.

8. The one-way locking zipper pull according to claim 6, characterized in that: The rotation groove comprises a first rotation groove (45) and a second rotation groove (46); the first rotation groove (45) is arranged close to the first plug hole (11), and the second rotation groove (46) is arranged close to the second plug hole (12); the height position of the first rotation groove (45) is greater than the height position of the second rotation groove (46).

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