Twist lock puller structure suitable for electroplating process

Abstract

The twist lock pull head structure comprises a pull head body, an upper ejecting elastic piece, a brake block and a twist lock cover, the pull head body comprises an upper plate, a lower plate and a supporting core, a zipper tooth sliding way is formed among the upper plate, the lower plate and the supporting core, an installation cavity for containing the upper ejecting elastic piece is formed in the supporting core, the top of the installation cavity penetrates through the upper plate, and the upper plate is provided with a zipper tooth sliding way. The bottom of the mounting cavity penetrates downwards to the lower plate to form a liquid leakage hole for the electroplating liquid to flow out, the brake pad is provided with an operation end and a stop end which are oppositely distributed and is movably mounted at the top of the upper plate, the operation end is located above the upper jacking elastic piece, and the upper jacking elastic piece keeps the trend of jacking the bottom of the operation end; a through hole leading to the zipper tooth sliding way is formed in the position, corresponding to the lower portion of the locking end, of the upper plate, a switching block protruding downwards is arranged at the bottom of the twist lock cover, a receding part allowing the operation end to warp upwards and a pressing part pressing the operation end downwards are arranged at the bottom of the switching block, and the twist lock cover is movably hooked to the upper plate through a riveting end claw. The twist lock cover is further externally provided with a rubber sleeve so as to be conveniently pinched and twisted.

Description

Technical Field

[0001] The utility model belongs to the technical field of zippers, and in particular relates to a twist lock slider structure suitable for electroplating process. Background Art

[0002] Since most lockable zipper head products are separate keys and zipper heads with keyholes, users need to keep the keys separately after locking, and they need to take out the keys repeatedly for locking and unlocking, which is inconvenient to use. In addition, since the zipper head itself is a small part, the corresponding key is even smaller in size, which is inconvenient to store and easily lost, resulting in the zipper head locking function not being able to be used normally.

[0003] In order to solve the above problems, the applicant designed a slider structure and applied for a patent, namely, a zipper head with a locking structure disclosed in the patent document with application number CN202122662440.1, which includes a zipper head main body, an upper plate provided with an elastic member cavity, and an elastic member is placed in the elastic member cavity; a locking member cavity is stacked on the upper end of the elastic member cavity, and a through hole penetrating the upper plate is provided at one end of the locking member cavity away from the elastic member cavity, and a locking member is placed in the locking member cavity, one end of the locking member is set as a resistance end in contact with the elastic member, and the other end is set as a resistance end in contact with the elastic member. The end is bent downward and is set as a locking end; a conversion block cavity is stacked on the upper end of the locking piece cavity, and an unlocking piece is rotatably connected to the upper plate. A conversion block that is inserted into the conversion block cavity is provided on the bottom surface of the unlocking piece, and a clearance portion and a downward pressure portion are provided on the end of the conversion block. The unlocking piece is designed to be rotatably connected to the upper plate, so that the unlocking piece does not need to be stored separately by the user, thereby minimizing the probability of losing the unlocking piece. At the same time, by arranging the clearance portion and the downward pressure portion on the unlocking piece, the locking state and the unlocking state can be switched only by rotating the unlocking piece, which is easy to use and highly practical.

[0004] In actual production, this product is generally made of plastic, metal or alloy. The applicant's downstream manufacturers have reported that they hope that the product can be surface-plated through electroplating to meet any specified metal texture, metal color, etc., while also improving durability. Based on market demand, the inventor believes that it is necessary to improve the structure of the slider to make it suitable for electroplating. Summary of the invention

[0005] In view of the problems in the related art, the utility model proposes a twist lock slider structure suitable for electroplating process to overcome the above technical problems existing in the existing related art.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A twist lock slider structure suitable for electroplating process comprises a slider body, wherein the slider body comprises an upper plate and a lower plate, wherein the upper plate and the lower plate are connected into one body through a support core, and a Y-shaped chain tooth slideway is formed between the upper plate, the lower plate and the support core.

[0008] It also includes an upper spring, a brake pad and a twist lock cover.

[0009] The support core is provided with an installation cavity for accommodating the upper ejector, the top of the installation cavity passes through the upper plate, the upper ejector in an extended state protrudes out of the upper cavity opening of the installation cavity, and the bottom of the installation cavity passes downward to the lower plate to form a leakage hole for allowing the electroplating solution to flow out.

[0010] The brake pad has an operating end and a stop end that are relatively distributed, the stop end is bent relative to the operating end and linked with it, the brake pad is movably mounted on the top of the upper plate, and the operating end and the stop end can swing up and down in opposite directions;

[0011] The operating end is located above the upper elastic member, and the upper elastic member maintains a tendency to push up the bottom of the operating end. A through hole is provided below the upper plate corresponding to the stop end, and the stop end enters or exits the chain tooth slideway through the through hole.

[0012] The twist lock cover is installed above the brake pad, and a plurality of riveting end claws are arranged on the periphery of the twist lock cover. The upper plate is provided with an annular convex edge for the riveting end claws to hook and grasp, and the riveting end claws can movably hook and grasp the annular convex edge, so that the twist lock cover is rotatably connected to the upper plate;

[0013] A rubber sleeve is installed on the outer surface of the twist lock cover, and the rubber sleeve at least covers the outer side wall of the twist lock cover;

[0014] A downwardly protruding switching block is provided at the bottom of the twist lock cover, and the switching block is located above the operating end. The bottom of the switching block has a space-avoiding portion for the operating end to tilt upward and a pressing portion for pressing down the operating end.

[0015] When the twist lock cover is twisted so that the avoidance portion is located above the operating end, the upper push spring extends and pushes up the operating end, the operating end tilts upward, and the stop end linked with the operating end moves downward and enters the chain element slideway through the through hole, and then is clamped into the zipper chain element, which is a locked state;

[0016] The twist lock cover is twisted to move the avoidance portion away from the operating end, and when the pressing portion presses down the operating end, the upper elastic member is compressed, and the stop end is tilted upward and exits the chain tooth slideway, that is, switched to an unlocked state.

[0017] Preferably, the area of ​​the upper opening of the leakage hole connected to and communicating with the installation cavity is smaller than the bottom area of ​​the upper elastic member.

[0018] Preferably, the diameter of the leakage hole gradually increases from the upper opening to the lower opening, and the lower opening is smaller than the width of the support core.

[0019] Preferably, the upper elastic member is a spring, and the outer diameter of the bottom of the spring is larger than the upper opening diameter of the leakage hole;

[0020] The width of the installation cavity is set to be larger than the outer diameter of the spring, and the spring cannot be radially bent in the installation cavity.

[0021] Preferably, the twist lock cover has a panel portion and a ring side wall arranged around the panel portion, thereby forming a cover cavity open toward the slider body, and the edge of the ring side wall away from the panel portion is provided with a plurality of riveting end claws;

[0022] After the twist-lock cover is closed on the upper plate, the annular convex edge is contained in the cover cavity, all the riveting end claws are folded inward, and the riveting end claws can be movably hooked on one side of the annular convex edge, so that the twist-lock cover is rotatably connected to the upper plate;

[0023] The rubber sleeve is a cavity structure with an open end. The rubber sleeve wraps the panel portion and the ring side wall, and the rubber sleeve does not contact the slider body.

[0024] Preferably, the outer panel surface of the panel portion is a non-planar structure.

[0025] Preferably, the inner side wall of the rubber sleeve is tightly fitted to the ring side wall of the twist-lock cover, and the rubber sleeve and the twist-lock cover are relatively stationary;

[0026] The outer side wall of the rubber sleeve is an arc structure protruding toward the outer circumference;

[0027] The open end of the rubber sleeve is provided with an inwardly bent hook edge, and the hook edge half wraps the bent riveting end claw.

[0028] Preferably, the outer top surface of the rubber sleeve is provided with a plurality of anti-slip protrusions.

[0029] Preferably, the plurality of anti-slip protrusions are distributed radially, and the volumes of the plurality of anti-slip protrusions gradually increase from the center to the periphery.

[0030] Preferably, a plate cavity for accommodating the brake pad is stacked on the top surface of the installation cavity, the shape of the plate cavity is adapted to the brake pad and limits the brake pad to only swing up and down in the cavity, and the depth of the plate cavity corresponding to the stop end is greater than the depth of the plate cavity corresponding to the operating end;

[0031] The main body of the switching block is a cylindrical structure, half of the bottom surface of the switching block is a horizontally arranged plane, serving as the pressing part, and the other half is an inclined surface inclined upward from the pressing part, serving as the air avoidance part. The top surface of the sheet cavity is stacked with a block cavity adapted to the shape of the switching block, and the sheet cavity is completely exposed at the bottom of the block cavity.

[0032] Beneficial effects of the utility model:

[0033] Firstly, in order to make the present invention suitable for electroplating process, the bottom of the installation cavity penetrates downward to the lower plate to form a leakage hole for allowing the electroplating liquid to flow out, so as to prevent the electroplating liquid from flowing into the cavity structure and remaining in large quantities during electroplating, causing the movable parts subsequently placed in the cavity to stick to the cavity wall or other components, which is not conducive to the flexible switching of the locking / unlocking state of the present invention.

[0034] Secondly, considering that the electroplating layer on the surface of the utility model is relatively smooth after electroplating, the fingers of the user are likely to slip when grasping and twisting the twist lock cover, and considering that the main grasping and force application position of the twist lock cover is the outer wall, a rubber sleeve is installed on the outer surface of the twist lock cover to increase the area available for the user to grasp and the grasping friction, and the rubber sleeve at least covers the outer wall position of the twist lock cover.

[0035] Finally, the utility model requires the user to perform a certain twisting operation to switch the locked state or the unlocked state. This operation is extremely easy to learn for the user, but is unfamiliar and cannot be intuitively understood by people other than the user. Therefore, it increases the difficulty of unlocking and reduces the chance of the item being stolen. At the same time, it also almost avoids the utility model from being accidentally opened due to external forces such as friction or bumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is one of the structural schematic diagrams of the utility model;

[0037] Figure 2 This is the second structural diagram of the utility model;

[0038] Figure 3 It is a structural exploded diagram of the utility model;

[0039] Figure 4 It is a structural schematic diagram of the rubber sleeve and the twist lock cover of the utility model;

[0040] Figure 5 It is a schematic diagram of the structure of the slider body of the utility model after the upper elastic member and the brake pad are placed;

[0041] Figure 6 This is a schematic diagram of the locking state of the utility model;

[0042] Figure 7 This is a schematic diagram of the unlocked state of the utility model;

[0043] Figure 8 This is the third structural diagram of the utility model;

[0044] Fig. 9 It is a structural schematic diagram of the rubber sleeve of the utility model;

[0045] Fig.10 This is the fourth structural diagram of the utility model;

[0046] Fig.11 This is the fifth structural diagram of the present utility model.

[0047] Marking Description:

[0048] 1. Rubber sleeve; 101. Edge hook; 102. Anti-slip bumps;

[0049] 2. Twist-lock cover; 201. Riveting end claw; 202. Switching block; 202a. Pressing part; 202b. Air-avoiding part;

[0050] 3. Brake pad; 301. Operating end; 302. Stop end;

[0051] 4. Push the spring piece upward;

[0052] 5. Slider body; 501. Upper plate; 502. Lower plate; 503. Support core; 504. Leakage hole; 505. Ring convex edge; 506. Installation cavity; 507. Sheet cavity; 508. Block cavity; 509. Through hole. DETAILED DESCRIPTION

[0053] 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 ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] like Figures 1 to 11 As shown, a twist lock slider structure suitable for electroplating process includes a slider body 5 made of plastic, alloy or metal, and a electroplating layer is arranged on the surface of the slider body 5.

[0056] The slider body 5 includes an upper plate 501 and a lower plate 502 , which are connected as a whole via a support core 503 , and a Y-shaped chain tooth slideway is formed between the upper and lower plates 502 and the support core 503 .

[0057] This embodiment further includes an upper spring member 4 , a brake pad 3 and a twist lock cover 2 .

[0058] The support core 503 is provided with an installation cavity 506 for accommodating the upper push spring 4, the top of the installation cavity 506 passes through the upper plate 501, and the upper push spring 4 in the extended state protrudes outward from the upper cavity opening of the installation cavity 506, so that the upper push spring 4 maintains the upper push state against the following operating end 301.

[0059] In order to make the present embodiment suitable for electroplating process, the bottom of the installation cavity 506 penetrates downward to the lower plate 502 to form a leakage hole 504 for allowing the electroplating liquid to flow out, so as to prevent the electroplating liquid from flowing into the cavity structure and remaining in large quantities during electroplating, causing the movable parts subsequently placed in the cavity to stick to the cavity wall or other components, which is not conducive to the flexible switching of the lock / unlock state of the present embodiment.

[0060] The brake pad 3 has an operating end 301 and a stop end 302 that are relatively distributed. The stop end 302 is bent relative to the operating end 301 and linked with it. The brake pad 3 is movably installed on the top of the upper plate 501, and the operating end 301 and the stop end 302 can swing up and down in opposite directions.

[0061] The operating end 301 is located above the upper elastic member 4, and the upper elastic member 4 maintains a tendency to push up the bottom of the operating end 301. A through hole 509 is provided below the upper plate 501 corresponding to the stop end 302, and the stop end 302 enters or exits the chain tooth slideway through the through hole 509.

[0062] The twist lock cover 2 is made of metal or alloy. The twist lock cover 2 is installed above the brake pad 3. The outer periphery of the twist lock cover 2 is provided with a plurality of riveting end claws 201. The upper plate 501 is provided with a convex edge 505 for the riveting end claws 201 to hook and grab. The riveting end claws 201 can movably hook and grab the convex edge 505, so that the twist lock cover 2 is rotatably connected to the upper plate 501.

[0063] Taking advantage of the fact that metal or alloy is not prone to elastic deformation, the connection formed by the riveting and hooking is relatively firm, and the twist lock cover 2 will not easily separate from the slider body 5. At the same time, compared with the prior art, the twist lock cover 2 in this embodiment, which serves as an unlocking piece, does not need to be stored separately by the user and is not easy to be lost.

[0064] Considering that the electroplating layer on the surface of this embodiment is relatively smooth after electroplating, the fingers of the user are likely to slip when grasping and twisting the twist lock cover 2, and considering that the main grasping and force application position of the twist lock cover 2 is the outer wall, a rubber sleeve 1 is installed on the outer surface of the twist lock cover 2 to increase the area available for the user to grasp and the grasping friction, and the rubber sleeve 1 at least covers the outer wall position of the twist lock cover 2.

[0065] A downwardly protruding switching block 202 is provided at the bottom of the twist lock cover 2 . The switching block 202 is located above the operating end 301 . The bottom of the switching block 202 has a space-avoiding portion 202 b for the operating end 301 to tilt upward and a pressing portion 202 a for pressing the operating end 301 downward.

[0066] like Figure 6 As shown, when the twist lock cover 2 is twisted so that the avoidance portion 202b is located above the operating end 301, the upper push spring 4 extends and pushes up the operating end 301, the operating end 301 tilts upward, and the stop end 302 linked with the operating end 301 moves downward and enters the chain tooth slideway through the through hole 509, and then is stuck in the zipper chain tooth, which is a locked state;

[0067] like Figure 7 As shown, when the twist lock cover 2 is twisted to move the avoidance portion 202b away from the operating end 301, and then the pressing portion 202a presses down the operating end 301, the upper elastic member 4 is compressed, and the stop end 302 is upwardly tilted and withdrawn from the chain tooth slideway, that is, switched to the unlocked state.

[0068] This embodiment requires the user to perform a certain twisting operation to switch the locked state or the unlocked state. This operation is extremely easy to learn for the user, but is unfamiliar and cannot be intuitively understood by people other than the user. Therefore, the difficulty of unlocking is increased and the chance of the item being stolen is reduced. At the same time, it also almost avoids the accidental opening of this embodiment due to external forces such as friction or bumps.

[0069] In this embodiment, the area of ​​the upper opening of the leakage hole 504 that is connected and communicated with the installation cavity 506 is smaller than the bottom area of ​​the upper elastic member 4 .

[0070] In practical applications, the push-up spring 4 can be a spring sheet, an elastic rubber column, a spring, a torsion spring, etc., as long as it can be installed in the installation cavity 506 and keep pushing up the operating end 301.

[0071] Combined with the overall shape of the support core 503, the upper elastic member 4 of this embodiment is preferably a spring 3 that elastically deforms along its own length direction, and the bottom outer diameter of the spring is larger than the upper hole diameter of the leakage hole 504 to prevent the spring from falling out of the leakage hole 504.

[0072] Specifically, the width of the installation cavity 506 is set to be slightly larger than the outer diameter of the spring, and the spring cannot be radially bent in the installation cavity 506 , so as to maintain the correct upward direction of the operating end 301 .

[0073] In this embodiment, the diameter of the leakage hole 504 gradually increases from the upper hole opening to the lower hole opening (eg Figure 6 and Figure 7 As shown), the liquid outlet area of ​​the leakage hole 504 is expanded as much as possible to prevent the plating liquid from having difficulty flowing out of the leakage hole 504 due to tension, and the lower orifice is smaller than the width of the support core 503.

[0074] In this embodiment, the twist lock cover 2 has a panel portion and a ring side wall arranged around the panel portion, thereby forming a cover cavity open toward the slider body 5, and the edge of the ring side wall away from the panel portion is provided with a plurality of riveting end claws 201;

[0075] After the twist-lock cover 2 is closed on the upper plate 501, the annular flange 505 is contained in the cover cavity, and all the riveting end claws 201 are folded inward. The riveting end claws 201 can be movably hooked on one side of the annular flange 505, and then the twist-lock cover 2 is rotatably connected to the upper plate 501.

[0076] The inventors have found in the actual production process that if the number of the riveting end claws 201 is less than four, in order to ensure the long-term stability of the hook, the size of the riveting end claws 201 is correspondingly larger, which leads to a larger punching force required during the riveting process. The larger punching force causes the riveting end claws 201 to hook the annular flange 505 too tightly, which is not conducive to the smooth and flexible twisting of the twist-lock cover 2. Therefore, the number of the riveting end claws 201 in this embodiment is four.

[0077] In this embodiment, the rubber sleeve 1 is a cavity structure with an open end. The rubber sleeve 1 wraps the panel part and the ring side wall. The rubber sleeve 1 does not contact the slider body 5, avoiding unnecessary friction and improving the smoothness of the twisting of this embodiment.

[0078] The inventors have discovered that if the outer surface of the panel portion is too flat, the panel portions of the two embodiments are prone to stick together during electroplating, and the electroplating layer will be damaged if they are separated. Therefore, in this embodiment, the outer surface of the panel portion is a non-planar structure, and the non-planar structure, such as a curved surface (this embodiment), a plurality of protrusions, etc., reduces the contact area of ​​the panel portions of the two embodiments.

[0079] In actual production, the outer surface of the panel part can be designed with logos, patterns and the like to enhance brand recognition or increase the aesthetics of the present embodiment. In this case, the rubber sleeve 1 should be transparent to avoid blocking logos, patterns and the like.

[0080] In this embodiment, the inner side wall of the rubber sleeve 1 fits tightly against the annular side wall of the twist-lock cover 2, and the rubber sleeve 1 and the twist-lock cover 2 are relatively stationary (which can be achieved by gluing, interference fit design, etc.), thereby reducing the force required for the user to twist the twist-lock cover 2; otherwise, the user needs to first pinch the rubber sleeve 1 and the twist-lock cover 2 so that the two do not rotate relative to each other, and then switch between the unlocked state and the locked state.

[0081] Specifically, the outer side wall of the rubber sleeve 1 is a ring-arc structure protruding toward the outer circumference. Compared with a flat outer side wall without protrusions, the ring-arc structure protruding toward the outer circumference is more convenient for fingers to grasp and hold.

[0082] Specifically, the open end of the rubber sleeve 1 is provided with an inwardly bent hook edge 101, and the hook edge 101 half wraps the bent riveted end claw 201, which has the following functions: first, to prevent the rubber sleeve 1 from easily detaching from the twist lock cover 2, and second, to protect the riveted end claw 201 and reduce the external impact or bump on the riveted end claw 201.

[0083] In actual production, since the mold opening cost of the rubber material is relatively low, the rubber sleeve 1 can be designed into various styles according to customer needs, which to a certain extent enriches the diversity of the appearance of this embodiment and makes the colors richer.

[0084] Considering that there is an action of pressing the top surface of the rubber sleeve 1 when the rubber sleeve 1 is assembled to the twist lock cover 2, in this embodiment, the outer top surface of the rubber sleeve 1 is provided with a plurality of anti-slip protrusions 102 (such as Figure 8 shown).

[0085] More specifically, if Fig. 9 As shown, the plurality of anti-skid protrusions 102 are radially distributed, and the volume of the plurality of anti-skid protrusions 102 gradually increases from the center to the periphery, which fits the arc of the finger pressing at the position during assembly, effectively preventing the finger from slipping during assembly.

[0086] In this embodiment, a plate cavity 507 for accommodating the brake pad 3 is stacked on the top surface of the installation cavity 506. The shape of the plate cavity 507 is adapted to the brake pad 3 and limits the brake pad 3 to only swing up and down in the cavity. The depth of the plate cavity 507 corresponding to the stop end 302 is greater than the depth of the plate cavity 507 corresponding to the operating end 301, so as to achieve the upward tilting of the stop end 302 to exit the chain tooth slide.

[0087] The main body of the switching block 202 is a cylindrical structure, which is convenient for rotation. Half of the bottom surface of the switching block 202 is a horizontally arranged plane, which serves as the pressing portion 202a, and the other half is an inclined surface inclined upward from the pressing portion 202a, which serves as the avoiding portion 202b, and the structure is simple. The top surface of the sheet cavity 507 is stacked with a block cavity 508 that is adapted to the shape of the switching block 202, which is convenient for alignment and assembly and the motion trajectory design of the rotation switching. The sheet cavity 507 is completely exposed at the bottom of the block cavity 508 to place and assemble the brake pad 3.

[0088] The specific assembly process of this embodiment is as follows:

[0089] (1) Place the upper spring 4 in the installation cavity 506, and then place the brake pad 3 in the pad cavity 507;

[0090] (2) Align the switching block 202 with the block cavity 508 and install it. The twist lock cover 2 covers the slider body 5 on which the top spring 4 and the brake pad 3 have been assembled. The riveting equipment bends the riveting end claw 201. The riveting end claw 201 is movably hooked on the annular flange 505 of the slider body 5. The twist lock cover 2 is movably connected to the upper plate 501.

[0091] (3) The rubber sleeve 1 is installed on the twist lock cover 2, and the hook edge 101 of the rubber sleeve 1 half wraps the bent riveting end claw 201, thus completing the assembly of this embodiment.

[0092] According to the disclosure and teaching of the above specification, the technicians in the field of the utility model can also change and modify the above implementation mode. Therefore, the utility model is not limited to the specific implementation modes disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A twist lock slider structure suitable for electroplating process, comprising a slider body, wherein the slider body comprises an upper plate and a lower plate, wherein the upper plate and the lower plate are connected into one body through a support core, and a Y-shaped chain tooth slideway is formed between the upper plate, the lower plate and the support core, wherein: It also includes an upper ejector, a brake pad, and a twist lock cover; The support core is provided with an installation cavity for accommodating the upper ejector, the top of the installation cavity penetrates the upper plate, the upper ejector in the extended state protrudes outward from the upper cavity opening of the installation cavity, and the bottom of the installation cavity penetrates downward to the lower plate to form a leakage hole for allowing the plating solution to flow out; The brake pad has an operating end and a stop end that are relatively distributed, the stop end is bent relative to the operating end and linked with it, the brake pad is movably mounted on the top of the upper plate, and the operating end and the stop end can swing up and down in opposite directions; The operating end is located above the upper elastic member, and the upper elastic member maintains a tendency to push up the bottom of the operating end. A through hole is provided below the upper plate corresponding to the stop end, and the stop end enters or exits the chain tooth slideway through the through hole; The twist lock cover is installed above the brake pad, and a plurality of riveting end claws are arranged on the periphery of the twist lock cover. The upper plate is provided with an annular convex edge for the riveting end claws to hook and grab, and the riveting end claws can movably hook and grab the annular convex edge so that the twist lock cover is rotatably connected to the upper plate, and a rubber sleeve is installed on the outer surface of the twist lock cover, and the rubber sleeve at least covers the outer side wall position of the twist lock cover; A downwardly protruding switching block is provided at the bottom of the twist lock cover, the switching block is located above the operating end, and the bottom of the switching block has a space-avoiding portion for the operating end to bend upward and a pressing portion for pressing down the operating end; When the twist lock cover is twisted so that the avoidance portion is located above the operating end, the upper push spring extends and pushes up the operating end, the operating end tilts upward, and the stop end linked with the operating end moves downward and enters the chain element slideway through the through hole, and then is clamped into the zipper chain element, which is a locked state; The twist lock cover is twisted to move the avoidance portion away from the operating end, and when the pressing portion presses down the operating end, the upper elastic member is compressed, and the stop end is tilted upward and exits the chain tooth slideway, that is, switched to an unlocked state.

2. The twist lock slider structure according to claim 1, characterized in that: The upper opening area of ​​the leakage hole connected with and communicating with the installation cavity is smaller than the bottom area of ​​the upper elastic member.

3. The twist lock slider structure according to claim 1 or 2, characterized in that: The diameter of the leakage hole gradually increases from the upper hole opening to the lower hole opening, and the lower hole opening is smaller than the width of the support core.

4. The twist lock slider structure according to claim 2, characterized in that: The upper elastic member is a spring, and the outer diameter of the bottom of the spring is larger than the upper opening diameter of the leakage hole; The width of the installation cavity is set to be larger than the outer diameter of the spring, and the spring cannot be radially bent in the installation cavity.

5. The twist lock slider structure according to claim 1, characterized in that: The twist lock cover comprises a panel portion and a ring side wall arranged around the panel portion, thereby forming a cover cavity open toward the slider body, and the edge of the ring side wall away from the panel portion is provided with a plurality of riveting end claws; After the twist-lock cover is closed on the upper plate, the annular convex edge is contained in the cover cavity, all the riveting end claws are folded inward, and the riveting end claws can be movably hooked on one side of the annular convex edge, so that the twist-lock cover is rotatably connected to the upper plate; The rubber sleeve is a cavity structure with an open end. The rubber sleeve wraps the panel portion and the ring side wall, and the rubber sleeve does not contact the slider body.

6. The twist lock slider structure according to claim 5, characterized in that: The outer panel surface of the panel part is a non-planar structure.

7. The twist lock slider structure according to claim 5, characterized in that: The inner side wall of the rubber sleeve is tightly fitted to the ring side wall of the twist lock cover, and the rubber sleeve and the twist lock cover are relatively stationary; The outer side wall of the rubber sleeve is an arc structure protruding toward the outer circumference; The open end of the rubber sleeve is provided with an inwardly bent hook edge, and the hook edge half wraps the bent riveting end claw.

8. The twist lock slider structure according to any one of claims 5 to 7, characterized in that: The outer top surface of the rubber sleeve is provided with a plurality of anti-skid protrusions.

9. The twist lock slider structure according to claim 8, characterized in that: The plurality of anti-skid protrusions are distributed radially, and the volumes of the plurality of anti-skid protrusions gradually increase from the center to the periphery.

10. The twist lock slider structure according to claim 1, characterized in that: The top surface of the installation cavity is stacked with a plate cavity for accommodating the brake pad, the shape of the plate cavity is adapted to the brake pad and limits the brake pad to only swing up and down in the cavity, and the depth of the plate cavity corresponding to the stop end is greater than the depth of the plate cavity corresponding to the operating end; The main body of the switching block is a cylindrical structure, half of the bottom surface of the switching block is a horizontally arranged plane, serving as the pressing part, and the other half is an inclined surface inclined upward from the pressing part, serving as the air avoidance part. The top surface of the sheet cavity is stacked with a block cavity adapted to the shape of the switching block, and the sheet cavity is completely exposed at the bottom of the block cavity.

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