A zipper, puller

Abstract

The utility model discloses a zipper, puller, apply to zipper technical field, including main part, main part is equipped with pull piece placement surface, pinhole and a plurality of elastic sheet limiting portion, and the elastic sheet limiting column is formed between adjacent elastic sheet limiting portion, pull piece, pull piece has rotary part, and the rotary part rotatably is placed in pull piece placement surface, elastic sheet, elastic sheet is equipped with elastic sheet needle tip and a plurality of elastic sheet limiting sheet, and the elastic sheet limiting groove is formed between adjacent elastic sheet limiting sheet, and the opening of elastic sheet limiting groove is through to the bottom surface of elastic sheet limiting sheet to constitute open passage, and elastic sheet needle tip can insert pinhole to lock zipper tooth, and elastic sheet limiting sheet is cooperated with elastic sheet limiting portion, and elastic sheet limiting column is connected in elastic sheet limiting groove to realize positioning, and elastic sheet is still equipped with the elastic sheet bending of bending upwards, cap, cap is buckled fixed with main part and holds down elastic sheet bending, and cap is equipped with pull piece rotary positioning portion, is used for the rotary part rotation. One riveting connection, convenient connection, can drain liquid fast in surface treatment link simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of zipper technology, and in particular to a zipper and a zipper pull. Background Technology

[0002] Zippers are an essential accessory for clothing, bags, and other everyday items, and their use is extremely frequent. The performance of the zipper pull directly determines the smoothness, safety, and lifespan of the zipper. Traditional zipper pulls typically employ a combination structure consisting of a main body, a pull tab, a hook, a spring, and a cap. The spring needs to be pressed into the cap using a snap-fit ​​method, relying on interference deformation to generate pre-tension force, thereby achieving the zipper pull's self-locking function.

[0003] The structure has long exhibited the following defects in mass production: First, the spring and hook are separate components, resulting in a large number of parts and complex positioning references. The insertion process must be completed with specialized equipment, and it is difficult to assemble them all on the same automatic machine, leading to low assembly efficiency and a high scrap rate. Second, after insertion, a semi-closed cavity is formed between the spring and the cap. During subsequent electroplating or painting processes, the treatment liquid can easily seep into and remain at the bottom of the cavity. After solidification, it forms a brittle film layer, which hinders the spring from rebounding, causing a stiff feel or even complete loss of locking function. Third, the traditional structure has poor adaptability to large metal or heavy plastic pull tabs. The weight of the pull tab can cause the hook to lift but not fall back down, leading to accidental loss of lock and affecting the reliability of zipper closure.

[0004] Therefore, how to provide a new type of zipper head that can be riveted in one go on a single machine and can quickly drain liquid during the surface treatment process is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a zipper and zipper pull that can be riveted together in one step and can also quickly drain liquid during the surface treatment process.

[0006] To solve the above-mentioned technical problems, this utility model provides a zipper puller, comprising:

[0007] The main body is provided with a pull tab placement surface, a pinhole, and a plurality of spring tab limiting parts, and spring tab limiting posts are formed between adjacent spring tab limiting parts;

[0008] A pull tab, the pull tab having a rotating part, the rotating part being rotatably positioned on the pull tab placement surface;

[0009] The spring sheet has a spring sheet tip and several spring sheet limiting pieces. A spring sheet limiting groove is formed between adjacent spring sheet limiting pieces. The opening of the spring sheet limiting groove extends to the bottom surface of the spring sheet limiting piece to form an open channel. The spring sheet tip can be inserted into the needle hole to lock the chain teeth. The spring sheet limiting piece cooperates with the spring sheet limiting part, and the spring sheet limiting post is engaged in the spring sheet limiting groove. The spring sheet also has an upward bending spring sheet bend.

[0010] The cap is fastened and fixed to the main body and presses the spring sheet to bend. The cap is provided with a pull tab rotation positioning part for the rotation part to rotate.

[0011] Optionally, at least two spring-loaded limiting pieces are provided, with the outer surfaces of the two outermost spring-loaded limiting pieces being flush with the corresponding side surfaces of the spring; a U-shaped limiting groove with the opening facing downward is formed between two adjacent spring-loaded limiting pieces.

[0012] Optionally, the spring limiting piece is provided and is located at the middle position in the width direction of the spring piece; the spring limiting piece has open side slots on both sides, and the open side slots constitute the spring limiting groove.

[0013] Optionally, the fastening surface of the main body is provided with a cap support surface, and the cap support surface protrudes relative to the fastening surface; after fastening, the bottom surface of the cap abuts against the cap support surface, and a gap is maintained between the bottom surface of the cap and the fastening surface.

[0014] Optionally, at one end of the main body near the open channel, two cap support surfaces are provided at intervals on the outer side of the spring sheet in the width direction, and a drainage groove is formed between the two cap support surfaces, the drainage groove being connected to the open channel.

[0015] Optionally, the inner wall of the cap is provided with a spring-loaded limiting wall, and a set gap is left between the spring-loaded limiting wall and the spring-loaded limiting part. The set gap is greater than the thickness of the spring-loaded limiting piece, so as to form the spring-loaded rebound space.

[0016] Optionally, both ends of the cap are provided with the spring-loaded limiting wall, and the main body is provided with a cap positioning nose at the end away from the spring-loaded limiting part. The surface of the cap positioning nose is recessed downward to form a clearance space. When fastened, the spring-loaded limiting wall at the end away from the spring-loaded limiting part is accommodated in the clearance space.

[0017] Optionally, the spring is integrally bent and formed, and the tip of the spring and the spring limiting piece are connected by the body; the bending of the spring is formed by bending the body upward after partial punching; when the tip of the spring is inserted into the needle hole, the extension direction of the body gradually rises from one side of the tip of the spring to one side of the spring limiting piece.

[0018] Optionally, the root of the bent spring is located on the side adjacent to the tip of the spring needle, and its end extends toward the spring limiting piece, and the bending height gradually increases from the side of the tip of the spring needle toward the side of the spring limiting piece.

[0019] Alternatively, the root of the bent spring is located on the side adjacent to the spring limiting piece, its end extends toward the tip of the spring needle, and the bending height gradually decreases from the side of the spring needle tip toward the side of the spring limiting piece.

[0020] This utility model provides a zipper, including a zipper pull, wherein the zipper pull is specifically any of the zipper pulls described above.

[0021] Compared to existing technologies, the zipper pull provided by this utility model has a main body with several spring-loaded limiting parts, which are arranged at intervals along the width direction, and spring-loaded limiting posts are provided between adjacent spring-loaded limiting parts. Each spring has several spring-loaded limiting pieces arranged at intervals along the width direction. These spring-loaded limiting pieces are also bent towards one side of the main body and fit against the spring-loaded limiting parts of the main body for positioning. A spring-loaded limiting groove is formed between adjacent spring-loaded limiting pieces, and the opening of the spring-loaded limiting groove extends to the bottom surface of the spring-loaded limiting piece, thus forming an open channel. This open channel not only allows electroplating or painting liquids to flow out quickly after surface treatment, but also prevents the liquid from accumulating and solidifying, thus avoiding elastic failure. The spring plate limiting groove also forms a nested relationship with the spring plate limiting post of the main body, so that the spring plate can achieve precise self-positioning after assembly. The spring plate completes the self-positioning of the plane and rotational degrees of freedom the moment it is put into the main body, without the need for the traditional spring plate and cap snapping steps; then the cap is directly snapped on, and fixed by one-time riveting. The whole process can be completed in a single machine, which meets the requirements of high-speed automation cycle.

[0022] This utility model also provides a zipper, including a zipper pull, wherein the zipper pull is specifically any of the zipper pulls described above. Since the zipper pulls described above have the aforementioned technical effects, the zipper having the zipper pull should also have the corresponding technical effects. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a first type of zipper head provided in a specific embodiment of the present invention;

[0025] Figure 2 Another view of the first type of pull head;

[0026] Figure 3 This is an exploded view of the first type of puller.

[0027] Figure 4 This is a schematic diagram of the main structure of the first type of zipper puller;

[0028] Figure 5 This is a schematic diagram of the pull tab structure in the first type of zipper puller;

[0029] Figure 6 This is a schematic diagram of the structure of the spring clip in the first type of puller;

[0030] Figure 7 This is a schematic diagram of the cap structure in the first type of zipper puller;

[0031] Figure 8 This is a schematic diagram showing the connection between the main body and the spring in the first type of zipper pull;

[0032] Figure 9 This is a schematic diagram of the first type of zipper lock;

[0033] Figure 10 A schematic diagram illustrating the first type of zipper pull for unlocking;

[0034] Figure 11 This is a schematic diagram of the main structure of the second type of zipper puller;

[0035] Figure 12 This is a schematic diagram of the spring clip in the second type of zipper pull;

[0036] Figure 13 This is a schematic diagram showing the connection between the main body and the spring in the second type of zipper pull;

[0037] Figure 14 This is a cross-sectional view of the second type of slider;

[0038] Figure 15 This is a schematic diagram of the structure of the spring clip in the third type of zipper pull;

[0039] Figure 16This is another structural diagram of the spring clip in the third type of zipper pull;

[0040] Figure 17 This is a cross-sectional view of the third type of zipper puller.

[0041] Figure label:

[0042] 1-Main body; 2-Pull tab; 3-Spring tab; 4-Cap; 10-Spring tab limiting part; 11-Cap positioning mold nose; 12-Spring tab fulcrum support part; 13-Spring tab limiting post; 14-Drainage groove; 15-Cap supporting surface; 16-Rivet groove; 17-Pull tab placement surface; 18-Pin hole; 19-Spring tab slot; 21-Pull tab rotating part; 22-Pull tab inner frame; 31-Spring tab bending; 32-Spring tab fulcrum; 33-Spring tab pin tip; 34-Spring tab limiting groove; 35-Spring tab limiting piece; 36-Spring tab support post; 41-Inner wall; 42-Pull tab rotating positioning part; 43-Top spring tab groove; 44-Spring tab limiting wall. Detailed Implementation

[0043] The core of this utility model is to provide a zipper and a zipper pull that can be riveted together in one step, making the connection convenient, and at the same time, it can quickly drain liquid during the surface treatment process.

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] In one specific embodiment provided by this utility model, please refer to... Figures 1-17 The zipper pull mainly consists of the main body 1, the pull tab 2, the spring tab 3, and the cap 4.

[0046] The main body 1 is provided with a pull tab placement surface 17, a pinhole 18 and a plurality of spring tab limiting parts 10 arranged at intervals along the width direction, and a spring tab limiting post 13 is formed between adjacent spring tab limiting parts 10.

[0047] The pull tab 2 has a rotating part, which is rotatably placed on the pull tab placement surface 17;

[0048] The spring 3 is provided with a spring needle tip 33 and a plurality of spring limiting pieces 35 arranged at intervals along the width direction. A spring limiting groove 34 is formed between adjacent spring limiting pieces 35. The opening of the spring limiting groove 34 extends to the bottom surface of the spring limiting piece 35 to form an open channel. The spring needle tip 33 can be inserted into the needle hole 18 to lock the chain teeth. The spring limiting piece 35 cooperates with the spring limiting part 10, and the spring limiting post 13 is engaged in the spring limiting groove 34. The spring 3 is also provided with an upwardly bent spring bending 31.

[0049] The cap 4 is fastened and fixed to the main body 1 and presses the spring sheet bending 31. The cap 4 is provided with a pull tab rotation positioning part 42 for the rotation part to rotate.

[0050] It should be noted that the main body 1, the pull tab 2, the spring tab 3, and the cap 4 are stacked longitudinally and riveted together to form a zipper pull that can slide on the zipper teeth and has automatic locking and unlocking functions.

[0051] The main body 1 provides the skeleton and sliding reference for the entire zipper pull, including an upper wing plate, a lower wing plate, and a mechanism connecting the front ends of the upper and lower wing plates. The top surface of the upper wing plate has a zipper tab placement surface 17. The zipper tab placement surface 17 is a shallow groove or flush with the top surface of the main body 1, used to support the rotating part of the zipper tab 2 and allow the rotating part to swing freely within a certain angle range. A pinhole 18 is provided at one end of the zipper tab placement surface 17 on the upper wing plate. The pinhole 18 can penetrate longitudinally through the upper wing plate of the main body 1, allowing the tip 33 of the spring clip 3 to extend into or retract, thereby achieving engagement or disengagement with the chain teeth. The main body 1 has a plurality of spring sheet limiting parts 10 at the other end of the pull sheet placement surface 17. The plurality of spring sheet limiting parts 10 are arranged at intervals along the width direction. These spring sheet limiting parts 10 protrude from the top surface of the main body 1 and are parallel to each other. A spring sheet limiting post 13 is provided between adjacent spring sheet limiting parts 10. The spring sheet limiting post 13 protrudes from the surface of the spring sheet limiting part 10. The outer contour of the spring sheet limiting post 13 is complementary to the shape of the spring sheet limiting groove 34 of the spring sheet 3, and is used to prevent the spring sheet 3 from moving in the width direction and the length direction.

[0052] Pull tab 2 is the component for which the user applies operating force. One end of it is provided with a rotating part, which is usually in the form of a cylindrical segment or a ring segment and is rotatably fitted onto the pull tab placement surface 17 of the main body 1. The rotating part and the body of pull tab 2 are connected by the inner frame 22 of the pull tab, so that when pull tab 2 is pulled upward, the inner frame 22 of the pull tab can abut against the fulcrum area of ​​the spring 3, thereby prying the spring 3 to produce elastic deformation and complete the unlocking action; when pull tab 2 is released, the rotating part falls back, and the spring 3 returns to its original position by its own rebound, re-entering the locked state.

[0053] The spring piece 3 is a one-piece molded sheet metal spring that extends along the length of the main body 1. One end of the spring piece 3 has a spring piece needle tip 33 bent towards one side of the main body 1, with the tip of the spring piece needle tip 33 facing the chain teeth. It can be inserted into the needle hole 18 of the main body 1 and extend into the gap between the chain teeth to achieve locking. The other end of the spring piece 3 has several spring piece limiting pieces 35 arranged at intervals along the width direction. The spring piece limiting pieces 35 are also bent towards one side of the main body 1 and fit against the spring piece limiting part 10 of the main body 1 to achieve positioning. A spring piece limiting groove 34 is formed between adjacent spring piece limiting pieces 35. The opening of the spring piece limiting groove 34 extends all the way to the bottom surface of the spring piece limiting piece 35, thus forming an open channel. This open channel not only allows the electroplating or painting liquid to flow out quickly after surface treatment, but also avoids the accumulation of liquid solidification and elastic failure. The spring clip limiting groove 34 also forms a nested relationship with the spring clip limiting post 13 of the main body 1, enabling the spring clip 3 to achieve precise self-positioning after assembly without the need for additional snap-fitting or pre-compression. The spring clip 3 has an upwardly bent spring clip bend 31, which is pressed tight after the cap 4 is fastened. That is, the rotating part abuts against the side of the spring clip 3 closest to the main body 1, and the top wall of the cap 4 abuts against the spring clip bend 31. The spring clip bend 31 forms a continuous pre-compression, accumulating rebound force to provide a stable downward insertion force for the spring clip tip 33, ensuring reliable locking. The deformation range of the spring clip 3 is controlled within the elastic range and can withstand high-frequency opening and closing.

[0054] The cap 4 has an inverted cap shape, and its side wall is provided with a pull tab rotation positioning part 42. The pull tab rotation positioning part 42 is recessed upward relative to the bottom surface of the cap 4 to accommodate the rotating part of the pull tab 2 and restrict its axial movement. The lower edge of the cap 4 contacts the fastening surface of the main body 1 or leaves a gap. The side of the spring piece limiting part 10 is provided with a rivet groove 16. The cap 4 and the main body 1 are fixedly connected by rivets in the rivet groove 16, thereby continuously pressing the spring piece 3's spring piece bend 31 to form a complete elastic closed structure. When the pull tab 2 is pulled, the rotating part pries the fulcrum area of ​​the spring 3 upward. The spring 3 undergoes elastic deformation with the spring limit post 13 as the rotation center. The spring needle tip 33 is then lifted away from the needle hole 18, and the pull head enters the unlocked state, which can slide freely along the chain teeth. When the pull tab 2 is released, the spring 3 quickly resets under the combined action of its own rebound force and the pre-pressure of the cap 4. The spring needle tip 33 is reinserted into the needle hole 18 and extends into the gap between the chain teeth. The pull head is locked again, realizing the automatic locking function.

[0055] The zipper pull of this application, by setting a spring-loaded limiting post 13 on the main body 1 and a spring-loaded limiting groove 34 on the spring 3, allows the spring 3 to complete self-positioning of its planar and rotational degrees of freedom the instant it is inserted into the main body 1, eliminating the need for the traditional snap-fit ​​step between the spring 3 and the cap 4. Subsequently, the cap 4 is directly snapped on, and fixed by a one-time riveting. The entire process can be completed in a single machine, meeting the requirements of high-speed automation. The lower end of the spring-loaded limiting groove 34 is an open channel, which together with the adjacent area of ​​the main body 1 forms a continuous drainage path. Electroplating or painting liquid can quickly flow out under centrifugal, purging, or gravity action, carrying away residual solvents and preventing liquid from stagnating and solidifying in the gap between the spring 3 and the main body 1. This prevents the spring 3 from sticking during its rebound stroke and the risk of loss of lock due to weakening locking force. The spring 3 always maintains its designed elasticity, ensuring the stability of the zipper pull's automatic locking / unlocking function throughout its entire lifespan. Furthermore, the drainage structure is formed in the shape of the spring 3, resulting in a simple structure, fewer parts, and low mold and material costs, making it suitable for various zippers in clothing, bags, outdoor equipment, etc.

[0056] In some embodiments, at least two spring-loaded limiting pieces 35 are provided, with the outer surfaces of the two outermost spring-loaded limiting pieces 35 being flush with the corresponding side surfaces of the spring piece 3; a U-shaped limiting groove with the opening facing downward is formed between two adjacent spring-loaded limiting pieces 35.

[0057] It should be explained that two or more spring-limiting pieces 35 are spaced apart along the width of the spring piece 3, bent from the body of the spring piece 3 and substantially perpendicular to the length direction of the spring piece 3. The outer surfaces of the two outermost spring-limiting pieces 35 are flush with the corresponding sides of the spring piece 3, making the outline of the spring piece 3 continuous and neat in the width direction, preventing the increase of lateral space occupied by local protrusions, and facilitating the maintenance of a uniform gap with the inner wall 41 of the cap 4. The two adjacent spring-limiting pieces 35 open downwards to form a U-shaped limiting groove with the opening facing downwards, that is, to form a spring-limiting groove 34. The sidewalls of the U-shaped limiting groove are formed by the opposite sides of the adjacent spring-limiting pieces 35, and the bottom wall extends directly to the bottom surface of the spring-limiting pieces 35, forming a completely open channel. When the spring piece 3 is connected to the main body 1, the spring piece limiting post 13 of the main body 1 enters the U-shaped limiting groove from bottom to top. The groove wall of the U-shaped limiting groove and the cylindrical surface of the spring piece limiting post 13 form a double-sided limiting in the width direction and an insertion guide in the length direction, so the spring piece 3 can achieve precise positioning without being snapped in. At the same time, the open feature of the U-shaped limiting groove allows the electroplating or painting liquid to quickly flow down the groove wall under the action of gravity or airflow and flow out of the outside of the pull head, avoiding the residual liquid from solidifying into a film between the spring piece 3 and the main body 1, ensuring that the subsequent rebound stroke of the spring piece 3 is not hindered. After the cap 4 is fastened, the spring piece bend 31 is continuously pressed, and the U-shaped limiting groove and the spring piece limiting post 13 remain in the fitted state. Even in the environment of vibration or impact, the double-sided clamping of the adjacent spring piece limiting pieces 35 can prevent the spring piece 3 from lateral displacement, thereby maintaining the alignment accuracy of the spring piece needle tip 33 and the needle hole 18, ensuring stable and reliable locking and unlocking actions.

[0058] As can be seen from the above, when two or more spring-loaded limiting plates 35 are used, the spring-loaded plates 3 form at least two symmetrical U-shaped limiting grooves in the width direction. Each groove is simultaneously engaged with the corresponding number of spring-loaded limiting posts 13 on the main body 1, forming a multi-point double-sided limiting. This layout enables the spring-loaded plates 3 to obtain uniform constraints in the transverse, longitudinal and torsional directions, resulting in high positioning accuracy, strong resistance to lateral impact, and suitability for high vibration environments. Furthermore, the parallel arrangement of the grooves provides a larger drainage area, which can further shorten the outflow time of the electroplating / painting liquid.

[0059] In some embodiments, a spring limiting piece 35 is provided and is located at the middle position in the width direction of the spring piece 3; the spring limiting piece 35 has side open slots formed on both sides, and the side open slots constitute the spring limiting groove 34.

[0060] It should be noted that the spring 3 has only one spring limiting piece 35, which is located in the middle of the width direction of the spring 3. It is bent from the body of the spring 3 and perpendicular to the length direction of the spring 3 to form a spring support post 36. Since there is only one spring limiting piece 35, two open side slots are naturally formed between its two sides and the body of the spring 3. These open side slots extend from the side wall of the spring limiting piece 35 to the edge of the spring 3 and penetrate downward to the bottom surface of the spring limiting piece 35, thus forming a symmetrical spring limiting groove 34 with its opening facing outward and downward. Correspondingly, the main body 1 has two spring limiting posts 13, and a spring locking groove 19 is formed between the two spring limiting posts 13. The spring support post 36 is inserted into the spring locking groove 19, and the spring locking groove 19 limits the spring support post 36.

[0061] When the spring piece 3 is placed on the main body 1, the two spring piece limiting posts 13 of the main body 1 enter the corresponding side open slots from below. The slot walls of the side open slots and the cylindrical surfaces of the spring piece limiting posts 13 form double-sided limiting in the width direction. That is, the two sides of the spring piece support post 36 and the two side walls of the spring piece slot 19 form double-sided limiting, and the length direction forms an insertion guide, so that the spring piece 3 can be centered without additional clamping force. At the same time, the open feature of the side open slots allows the electroplating or painting liquid to drain quickly along the slot wall under the action of gravity or airflow, and flow out of the pull head through the lower drainage area, avoiding residual liquid from solidifying into a film between the spring piece 3 and the main body 1, and ensuring that the subsequent rebound stroke of the spring piece 3 is not hindered.

[0062] After the cap 4 is fastened, the spring clip 31 is continuously pressed, and the side open slot and the spring clip limiting post 13 remain in a fitted state. Even under vibration or impact environment, the middle spring clip limiting piece 35 and the side slot walls can work together to prevent the spring clip 3 from moving laterally, thereby maintaining the alignment accuracy between the spring clip tip 33 and the pin hole 18 of the main body 1, ensuring that the locking and unlocking actions are stable and reliable.

[0063] As can be seen from the above, when using a single spring retaining piece 35, the middle single-piece structure divides the space in the width direction of the spring piece 3 into two parts, forming two open side slots. Only two spring retaining posts 13 are needed to achieve centered positioning. This structure reduces the number of spring retaining pieces 35, simplifies the punching process, and reduces material consumption and processing costs. At the same time, the middle single piece has little impact on the body stiffness of the spring piece 3, and can maintain the overall rebound performance of the spring piece 3. It is suitable for cost-sensitive or relatively mild impact loads. Moreover, the open side slots also have good drainage effect, taking into account both functionality and economy.

[0064] In some embodiments, the fastening surface of the main body 1 is provided with a cap support surface 15, and the cap support surface 15 protrudes relative to the fastening surface; after fastening, the bottom surface of the cap 4 abuts against the cap support surface 15, and a gap is maintained between the bottom surface of the cap 4 and the fastening surface.

[0065] It should be explained that the main body 1 integrally forms the cap support surface 15 on the fastening surface. The cap support surface 15 is raised relative to the fastening surface, forming a continuous or discontinuous annular, island-shaped, or rib-shaped platform. The top surface of the cap support surface 15 is flat and of uniform height. The outer side of the cap support surface 15 is transitioned to the fastening surface by a small arc or slope to reduce stress concentration.

[0066] After the cap 4 is fastened, its bottom surface directly contacts the top surface of the raised cap support surface 15, while the remaining area of ​​the bottom surface of the cap 4 maintains a gap with the fastening surface. This gap is continuous along the circumference of the pull head, forming an open annular or segmented cavity. Since the cap support surface 15 raises the cap 4 as a whole, it will not be stuck due to adsorption or capillary action on the bottom surface of the cap 4. The gap becomes a channel for rapid liquid drainage during electroplating or painting processes, preventing liquid from stagnating, accumulating, and solidifying into a film between the bottom surface of the cap 4 and the fastening surface. This prevents the bonding force between the cap 4 and the main body 1 from decreasing or the spring 3 from being obstructed due to solidification residue. At the same time, the cap support surface 15 acts as a rigid fulcrum, concentrating the riveting pressure on the table area, ensuring uniform force around the cap 4, reducing stress concentration at the riveting point, and improving connection reliability.

[0067] In some embodiments, the main body 1 has two cap support surfaces 15 spaced apart on the outer side of the spring sheet 3 in the width direction at one end near the open channel, and a drain groove 14 is formed between the two cap support surfaces 15, which is connected to the open channel.

[0068] It should be explained that, at one end of the main body 1 adjacent to the open channel, two cap support surfaces 15 are formed at intervals on the outer side of the spring piece 3 in the width direction. The two cap support surfaces 15 are spaced apart, and the bottom surface of the interval area is concave downward relative to the cap support surface 15. The bottom surface of the interval area can be flush with the surface of the main body 1, lower than the surface of the main body 1, or be an inclined surface that gradually slopes downward from the inside out. The interval area forms a drainage groove 14 with a straight or slightly arc-shaped direction. The bottom of the drainage groove 14 is lower than the top surface of the cap support surface 15, and the length direction of the groove is basically consistent with the length direction of the spring piece 3. The two ends of the groove lead to the outside of the main body 1 or to other low-level cavities, thus forming an open, low-resistance liquid outflow path.

[0069] When the cap 4 is fastened, its bottom surface contacts the cap support surface 15, while the drain groove 14 is suspended in the air. A continuous cavity is naturally formed between the bottom surface of the cap 4 and the bottom of the groove. One end of this cavity directly receives the electroplating or painting liquid through the open channel of the spring limiting groove 34 of the spring 3, and the other end is connected to the outside atmosphere. This allows the liquid to be quickly discharged along the continuous path of the open channel, drain groove 14, and outside of the pull head under the action of gravity, airflow, or spin drying. It will not stagnate, accumulate, or solidify into a film in the area where the spring 3 and the main body 1 meet. Since the drain groove 14 is located between the cap support surfaces 15, the cap support surfaces 15 still maintain stable support for the cap 4, ensuring that the riveting pressure is evenly transmitted and that the connection strength is not weakened due to local grooving. At the same time, the depth of the recess of the drain groove 14 and the height of the cap support surface 15 form a height difference, further preventing the liquid from flowing back to the sliding area of ​​the spring 3 due to capillary action, thereby maintaining the flexible extension and locking reliability of the spring needle tip 33 for a long time.

[0070] In some embodiments, the inner wall 41 of the cap 4 is provided with a spring plate limiting wall 44, and a set gap is left between the spring plate limiting wall 44 and the spring plate limiting part 10. The set gap is greater than the thickness of the spring plate limiting piece 35, so as to form a spring plate 3 rebound space.

[0071] It should be noted that the inner wall 41 of the cap 4 is integrally provided with a spring-loaded limiting wall 44. This spring-loaded limiting wall 44 extends continuously or in segments downward from the top wall of the cap 4, located on the outer side of the spring 3, and is positioned opposite to the spring-loaded limiting part 10 on the main body 1. After fastening, a set gap is left between the inner side of the spring-loaded limiting wall 44 and the outer side of the spring-loaded limiting part 10. This set gap is continuous throughout the entire thickness direction of the spring 3, and the set gap is greater than the thickness of the spring-loaded limiting piece 35. Since the gap width is greater than the thickness of the spring-loaded limiting piece 35, when the spring 3 is pried up by the pull tab 2, the spring-loaded limiting piece 35 can swing freely within the set gap without interfering with the spring-loaded limiting wall 44. At the same time, the spring-loaded limiting wall 44 provides a lateral stop for the spring 3 by limiting the outward swing amplitude of the spring-loaded limiting piece 35, preventing it from undergoing large forward and backward displacement during transportation, drops, or high-frequency vibration, and ensuring that the spring needle tip 33 and the needle hole 18 are always aligned.

[0072] The spring-loaded space is composed of a set gap, the thickness difference of the spring-loaded limiting piece 35, and the open structure of the spring-loaded limiting groove 34. This allows the spring-loaded piece 3 to have sufficient deformation margin in the longitudinal direction while maintaining precise positioning in the lateral direction. In addition, the set gap is interconnected with the open channel and the drain channel 14, allowing electroplating or painting liquids to flow out quickly along the gap between the spring-loaded limiting wall 44 and the spring-loaded limiting part 10, further preventing residual liquid from solidifying and hindering elastic deformation. By setting the set gap to be greater than the thickness of the spring-loaded limiting piece 35, the pull head integrates lateral limiting, longitudinal clearance, and drain channel while ensuring the flexible spring-loaded piece 3's rebound. This results in a concentrated function that is easy to mass-produce.

[0073] In some embodiments, both ends of the cap 4 are provided with spring-loaded limiting walls 44, and the main body 1 is provided with a cap positioning nose 11 at the end away from the spring-loaded limiting part 10. The surface of the cap positioning nose 11 is recessed downward to form a clearance space. When fastened, the spring-loaded limiting wall 44 at the end away from the spring-loaded limiting part 10 is accommodated in the clearance space.

[0074] It should be noted that both ends of the cap 4 are symmetrically provided with spring-loaded limiting walls 44, and the two walls are completely identical in shape, size and height, forming a front-to-back mirror structure. On the corresponding end of the main body 1, a cap positioning nose 11 is provided on the side away from the spring-loaded limiting part 10. The cap positioning nose 11 rises upward from the snap-fit ​​surface and then sinks downward to form a partial clearance space. The outline of the clearance space matches the shape of the corresponding end spring-loaded limiting wall 44, and the depth is sufficient to accommodate the full height of the spring-loaded limiting wall 44.

[0075] When fastened, the spring limiting wall 44 at the end away from the spring limiting part 10 is completely sunk into the clearance space. The spring limiting wall 44 does not contact the top surface of the cap positioning mold nose 11, and the side wall of the cap positioning mold nose 11 is close to but does not contact the spring limiting wall 44. The clearance space forms a circumferential limiting on the spring limiting wall 44, preventing the cap 4 from having a large offset in the length and width directions.

[0076] Since the spring-loaded limiting walls 44 at both ends of the cap 4 are exactly the same, the cap 4 can be fastened to the main body 1 without distinguishing between the front and back directions during assembly, which fundamentally eliminates the selection error and avoids rework caused by reverse assembly; at the same time, the spring-loaded limiting walls 44 at both ends are restricted after fastening, so that the riveting pressure is evenly distributed along the circumference of the cap 4, preventing one-sided lifting or local stress concentration, and ensuring that the riveting connection is firm and reliable.

[0077] In some embodiments, the spring sheet 3 is integrally bent and formed, and the spring sheet needle tip 33 and the spring sheet limiting piece 35 are connected by the body; the spring sheet bending 31 is formed by bending the body upward after partial punching; when the spring sheet needle tip 33 is inserted into the needle hole 18, the extension direction of the body gradually rises from one side of the spring sheet needle tip 33 to the side of the spring sheet limiting piece 35.

[0078] It should be noted that the spring piece 3 adopts an integrated bending forming process, forming a complete spring structure from the same sheet blank through punching and bending, without the need for additional welding or riveting, resulting in fewer parts, higher precision, and better consistency. The main body is located between the spring piece needle tip 33 and the spring piece limiting piece 35, serving as the core area for force transmission and deformation coordination. The middle part of the main body is partially punched and then bent upwards to form the spring piece bend 31, which extends along the length of the main body. The spring piece bend 31 gradually rises from the root to the end, forming a sloping elastic arm. When the spring piece needle tip 33 is inserted into the needle hole 18 of the main body 1, the sloping structure of the main body causes pre-compression between the spring piece bend 31 and the spring piece groove 43 on the cap 4, storing rebound energy and providing a continuous downward insertion force for the spring piece needle tip 33, ensuring reliable locking.

[0079] The tip 33 of the spring extends directly from the middle of the lower end of the body to one side of the main body 1 to form a tongue. The thickness of the tongue is the same as that of the main body. The contours on both sides are transitioned to the main body by arcs or straight lines to form sharp edges or rounded tips, which facilitates smooth entry into the needle hole 18 and penetration into the gap of the chain teeth.

[0080] Two spring fulcrums 32 are formed at the interface between the main body and the two sides of the tongue. When the spring tip 33 is inserted into the needle hole 18, the spring fulcrum 32 simultaneously abuts against the spring fulcrum support part 12 of the main body 1, so that the spring 3 obtains a stable rotation center. When the pull tab 2 is pulled, the external force is transmitted to the rear end of the main body through the pull tab rotation part 21. The main body undergoes elastic deformation with the spring fulcrum 32 as the axis, and the spring tip 33 is lifted accordingly to unlock. After the pull tab 2 is released, the main body quickly returns to its original position under the action of the spring bending 31, and the spring tip 33 is reinserted into the needle hole 18 to restore the locked state. By integrating the spring tip 33, the spring bending 31 and the spring fulcrum 32 into one body, the spring 3 achieves force transmission, fulcrum establishment and deformation coordination while maintaining high rebound performance. The structure is simple and the function is reliable.

[0081] In some embodiments, the root of the spring sheet bend 31 is located on the side adjacent to the spring sheet tip 33, and its end extends toward the spring sheet retaining piece 35, and the bending height gradually increases from the side of the spring sheet tip 33 toward the side of the spring sheet retaining piece 35.

[0082] Alternatively, the root of the spring bend 31 is located on the side adjacent to the spring limit piece 35, and its end extends toward the spring needle tip 33, and the bending height gradually decreases from the side of the spring needle tip 33 toward the side of the spring limit piece 35.

[0083] It should be noted that the arrangement direction of the spring bending 31 can adopt two mirror-image extension schemes, both based on the body and obtained by local punching and upward bending, but the root position is opposite to the tilt direction, thus providing differentiated elastic curves and space avoidance effects.

[0084] In the first design, the root of the spring clip bend 31 is located on the side adjacent to the spring clip tip 33, and its end extends toward the spring clip limiting piece 35. The bending height gradually increases from the spring clip tip 33 side to the spring clip limiting piece 35 side, forming a sloping lifting arm that is lower in the front and higher in the back. This arrangement brings the bending starting point close to the load input area, and the spring clip tip 33 obtains a large initial pre-pressure in the locked state. The torque that needs to be overcome when unlocking is small, and the movement is sensitive. It is suitable for occasions where the pull tab 2 is lightweight and the unlocking force is required to be gentle. At the same time, the contact point between the sloping lifting arm and the top spring clip groove 43 of the cap 4 is located further back, which can leave a wider open area for the front drain groove 14, which is conducive to the rapid flow of electroplating or painting liquid.

[0085] In the second design, the root of the spring clip bend 31 is located on one side adjacent to the spring clip limiting piece 35, and its end extends towards the spring clip tip 33. The bending height gradually decreases from the spring clip tip 33 side to the spring clip limiting piece 35 side, forming a sloping arm that is higher in the front and lower in the back. This arrangement increases the effective bending length, that is, the distance between the end of the spring clip bend 31 and the body is the effective length, which is also the deformation distance of the spring clip 3. The elastic arm stores more deformation energy, and the spring clip tip 33 obtains a higher downward insertion force in the locked state. The lifting torque required to unlock is correspondingly increased, thereby effectively resisting mis-locking caused by the large pull piece 2 or external impact. In other words, the spring clip bend 31, together with the top spring clip groove 43 of the cap 4, experiences greater force. At this time, the spring clip tip 33 needs a greater pulling force to retract, thereby strengthening the locking force of the pull head and effectively solving the problem that the hook is raised or difficult to fall back due to the pull piece 2 being too large and heavy. Meanwhile, the end of the inclined arm is close to the tip 33 of the spring needle, which can directly bear the prying force of the rotating part at the moment of lifting, reducing the force transmission path and improving the response speed.

[0086] Both solutions are formed using the same body, and can be switched by adjusting the punching profile and bending direction, without the need for additional parts or significant changes to the mold; the bending direction forms a smooth transition with the overall plane of the spring 3, avoiding stress concentration. By selecting different tilt directions for the spring bending 31, the pull head can achieve a flexible balance between sensitivity and locking force, meeting diverse application needs.

[0087] This embodiment also provides a zipper, which mainly includes a zipper pull. The specific contents of the zipper pull are the same as those described above, and will not be repeated here.

[0088] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0089] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A zipper puller, characterized in that, include: The main body (1) is provided with a pull tab placement surface (17), a pinhole (18) and a plurality of spring tab limiting parts (10), and a spring tab limiting post (13) is formed between adjacent spring tab limiting parts (10). A pull tab (2) has a rotating part that is rotatably placed on the pull tab placement surface (17). The spring (3) is provided with a spring needle tip (33) and a plurality of spring limiting pieces (35). A spring limiting groove (34) is formed between adjacent spring limiting pieces (35). The opening of the spring limiting groove (34) extends to the bottom surface of the spring limiting piece (35) to form an open channel. The spring needle tip (33) can be inserted into the needle hole (18) to lock the chain teeth. The spring limiting piece (35) cooperates with the spring limiting part (10), and the spring limiting post (13) engages with the spring limiting groove (34). The spring (3) is also provided with an upwardly bent spring bend (31). The cap (4) is fastened and fixed to the main body (1) and presses the spring sheet bending (31). The cap (4) is provided with a pull tab rotation positioning part (42) for the rotation part to rotate.

2. The zipper pull according to claim 1, characterized in that, The spring sheet limiting piece (35) is provided in at least two pieces. The outer sides of the two outermost spring sheet limiting pieces (35) are flush with the corresponding sides of the spring sheet (3). A U-shaped limiting groove with the opening facing downward is formed between two adjacent spring sheet limiting pieces (35).

3. The zipper pull according to claim 1, characterized in that, The spring sheet limiting piece (35) is provided and is located in the middle of the width direction of the spring sheet (3); the spring sheet limiting piece (35) forms side open slots on both sides, and the side open slots constitute the spring sheet limiting slot (34).

4. The zipper pull according to claim 1, characterized in that, The fastening surface of the main body (1) is provided with a cap support surface (15), and the cap support surface (15) protrudes relative to the fastening surface; After fastening, the bottom surface of the cap (4) abuts against the cap support surface (15), and a gap is maintained between the bottom surface of the cap (4) and the fastening surface.

5. The zipper pull according to claim 4, characterized in that, The main body (1) has two cap support surfaces (15) spaced apart on the outer side of the spring sheet (3) in the width direction near one end of the open channel. A drain groove (14) is formed between the two cap support surfaces (15) and the drain groove (14) is connected to the open channel.

6. The zipper pull according to claim 1, characterized in that, The inner wall (41) of the cap (4) is provided with a spring plate limiting wall (44), and a set gap is left between the spring plate limiting wall (44) and the spring plate limiting part (10). The set gap is greater than the thickness of the spring plate limiting piece (35) to form the spring plate (3) rebound space.

7. The zipper pull according to claim 6, characterized in that, Both ends of the cap (4) are provided with the spring plate limiting wall (44), and the main body (1) is provided with a cap positioning mold nose (11) at the end away from the spring plate limiting part (10). The surface of the cap positioning mold nose (11) is recessed downward to form a clearance space. When fastened, the spring plate limiting wall (44) at the end away from the spring plate limiting part (10) is accommodated in the clearance space.

8. The zipper pull according to claim 1, characterized in that, The spring sheet (3) is integrally bent and formed. The spring sheet needle tip (33) and the spring sheet limiting piece (35) are connected by the body. The spring sheet bending (31) is formed by bending the body upward after partial punching. When the spring sheet needle tip (33) is inserted into the needle hole (18), the extension direction of the body gradually rises from one side of the spring sheet needle tip (33) to one side of the spring sheet limiting piece (35).

9. The zipper pull according to claim 8, characterized in that, The root of the spring sheet bend (31) is located on the side adjacent to the spring sheet tip (33), and its end extends toward the spring sheet limiting piece (35), and the bending height gradually increases from the side of the spring sheet tip (33) toward the side of the spring sheet limiting piece (35). Alternatively, the root of the spring bend (31) is located on the side adjacent to the spring retainer (35), and its end extends toward the spring needle tip (33), and the bending height gradually decreases from the side of the spring needle tip (33) toward the side of the spring retainer (35).

10. A zipper, comprising a zipper pull, characterized in that, The zipper head is specifically the zipper head described in any one of claims 1 to 9.

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