Spring press-on buckle with lock

Abstract

The utility model relates to the fastener technical field, propose a spring press type buckle of area lock, the buckle is by upper and lower casing, cover pressure lock piece (include lock head and runway shape cover pressure piece), partition, pair of mirror image sliding member, the elastic member in sliding cavity and be equipped with the clamping portion of embedded groove, the upper casing top is equipped with the lock eye hole, and the inner periphery is arranged concave point groove, and the outside is equipped with the limiting block, the partition and the shell inner edge form the guidance gap, and the through -hole is established in its vertical direction to supply the connecting piece insertion, cover pressure lock piece and lock eye hole and limiting block constitute two state mechanical positive lock: lock state, cover pressure piece fillet end leans against the step surface of press head, and the hard limiting of press stroke is implemented, and the buckle is also not loose under the vibration, impact or accidental touch, unlock state, cover pressure piece turns to with the elastic member axial nearly vertical, and press head can drive sliding member opposite retraction in the partition and shell inner edge limited stroke, and clamping portion releases the connecting piece and completes the buckle.

Description

Technical Field

[0001] This utility model relates to the field of quick-release buckle technology, and more specifically to a lockable spring-loaded snap buckle. Background Technology

[0002] With the widespread adoption of wearable equipment, outdoor sports gear, and lightweight mounting systems, push-button buckles, which use springs to provide clamping force and release quickly by pressing, are widely used. These buckles typically consist of upper and lower housings, symmetrical sliding clamping components, and elastic elements located between the clamping components. The operator presses the push-button head to retract the clamping components, thereby releasing the clamped connector head and enabling quick assembly and disassembly. Existing technologies largely rely on the rebound force of the elastic elements to maintain clamping, and improve feel and stability through housing positioning or friction engagement.

[0003] However, the aforementioned traditional structures generally lack an independent "locking" mechanism. That is, the pressing and releasing actions are not physically separated from the "unlocking" step. This means that under conditions of transport vibration, impact loads, or accidental contact or misoperation in crowded environments, the pressing head may be improperly triggered, causing the clamping component to retract to a position sufficient to release the connector head, resulting in the risk of accidental disengagement. Especially in conditions such as equipment vibration, wearer running and jumping, equipment collisions, or pressure from foreign objects, relying solely on the clamping and friction of elastic components to maintain locking is insufficient to effectively raise the trigger threshold for disengagement.

[0004] To reduce the risk of accidental activation, existing solutions attempt to improve performance by increasing spring stiffness, adding friction pads, optimizing the shape of the press head, or installing a soft protective sleeve. However, these measures often bring new problems: significantly increased pressing force, fatigue from long-term operation, decreased feel and clamping force after wear, sensitivity to dirt / oil, and the possibility of tripping over the critical stroke under random impact. Some technologies introduce additional paddles or secondary latches to form "secondary confirmation," but the structural complexity and assembly cost increase accordingly. Furthermore, due to the lack of clear and repeatable angle positioning and anti-rotation boundaries, there is still an uncertain state of partial locking and partial opening, making it difficult to fundamentally eliminate the defects of "inability to lock and possible accidental activation."

[0005] Therefore, the common technical problem faced by existing push-button latches is that there is a lack of a positive locking scheme that completely decouples and forces the "unlocking" and "press-to-release" actions at the mechanism level, so that the latch can form a hard limit on the pressing stroke when it is not unlocked, thus preventing accidental disengagement from the chain from the source; at the same time, there needs to be a clear and perceptible positioning and limiting boundary between the unlocked and locked states, so as to raise the threshold for accidental triggering and improve reliability under vibration, shock and uncertain working conditions. Utility Model Content

[0006] To solve the above problems, this utility model provides a lockable spring-loaded snap buckle.

[0007] To achieve the above objectives, this utility model provides the following technical solution, mainly including:

[0008] A lockable spring-loaded snap fastener includes an upper housing and a lower housing that snap together with upper and lower covers, a cover locking plate for locking and limiting, and a locking structure for opening and closing control connectors on both sides.

[0009] The upper housing has a keyhole at its top for housing a cover-pressing locking plate. The cover-pressing locking plate consists of a lock head and a cover plate. The top lock head is positioned corresponding to the keyhole, and the bottom of the lock head is integrally formed with the cover plate, which rotates with the lock head. The lower housing has a partition plate on its inner side for the locking structure to abut and limit its movement. A through hole is provided in the vertical direction of the partition plate for the insertion of a connector. The locking structure is positioned between the partition plate and the through hole, with a cover-pressing locking plate on its top.

[0010] The locking structure consists of two mirror-symmetrical sliding parts. Each sliding part includes a pressing head, a sliding cavity, and a clamping part. An elastic element is provided inside the sliding cavity. The sliding cavity is snapped together to form an installation chamber for installing the elastic element. The two ends of the elastic element abut against the pressing heads on both sides, and a clamping part is provided on the other side of the sliding cavity. The clamping part is symmetrically arranged on the left and right sides along the contraction direction of the elastic element. An embedding groove for clamping the connecting part is provided on the clamping part.

[0011] Preferably, an extension strap piece is provided on the same side of the upper shell and the lower shell, and the extension strap piece is provided with a strap groove.

[0012] Preferably, the upper and lower housings are further provided with a pressing head hole, and the bottom end of the pressing head is provided with a stepped surface, which is used to allow the pressing head to be completely removed from the housing.

[0013] Preferably, the two sides of the partition plate have a pre-set contact gap with the edge of the housing, and the stepped surface moves between the edge of the housing and the end of the partition plate. The partition plate can limit the opening and closing degree of the locking structure.

[0014] Preferably, the two sides of the partition plate have a pre-set contact gap with the edge of the housing, and the stepped surface moves between the edge of the housing and the end of the partition plate. The partition plate can limit the opening and closing degree of the locking structure.

[0015] Preferably, the cover pressure plate is a racetrack-shaped thin sheet. The sheet is fastened to the housing by a snap-fit ​​structure, with the bottom pressing against the locking structure and the top lock rotating along the keyhole. The cover pressure plate has two states: State 1: The sheet and the elastic element are aligned, the rounded corners of the sheet abut against the stepped surface, restricting the range of motion of the pressing head, and the locking structure is in a locked state; State 2: The sheet and the elastic element are perpendicular to each other, the pressing head moves between the edge of the housing and the end of the partition plate, and the locking structure opens and closes freely.

[0016] Preferably, the inner surface of the upper housing is provided with four equidistant circular recessed grooves along the outer periphery of the keyhole, and two limiting blocks on the same central diameter are provided further out to limit the over-rotation of the thin sheet; protrusions corresponding to the circular recessed grooves are provided on both sides of the lock head.

[0017] Preferably, the connector includes a cylindrical head and a connecting post, the radius of which is smaller than that of the cylindrical head, and the cylindrical head is correspondingly provided with an embedded groove.

[0018] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are as follows: The locking spring-loaded snap fastener provided in this application, through the two-state mechanical positive locking structure of "cover pressure locking plate (lock head + racetrack-shaped cover pressure plate) - keyhole - limiting block", forces the unlocking and pressing to be separated in sequence: In the locked state, the rounded end of the cover pressure plate abuts against the stepped surface of the pressing head, forming a hard limit on the pressing stroke. Even if there is external force, vibration or accidental contact, the locking structure cannot be released, which substantially eliminates the defects of traditional quick-release buckles that "cannot be locked and can be released in any state"; In the unlocked state, the cover pressure plate rotates to be perpendicular to the direction of the elastic element, and the pressing head can move within the stroke limited by the edge of the housing and the end of the partition plate to complete the release, thereby raising the trigger threshold for accidental release from a single pressing force to a combination of "unlocking + pressing", effectively reducing the risk of accidental release. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is an exploded view of the three-dimensional structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the internal structure of the upper shell. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] As attached Figure 1-3 As shown, a lockable spring-loaded snap fastener includes an upper housing 1 and a lower housing 2, which are positioned by a circumferential snap-fit ​​structure and can be further fixed by fasteners (e.g., bolt holes).

[0026] The top of the upper housing 1 has a keyhole 11 for receiving and guiding the rotation of the lock head 31 of the cover-pressing locking plate 3. Four circular recessed grooves 13 are equidistantly arranged on the inner surface of the outer periphery of the keyhole 11, and two limiting blocks 12 are arranged on the outer side of the grooves along the same central diameter. The limiting blocks 12 are used to limit the over-rotation of the cover-pressing locking plate 3. Press head holes 14 / 24 are respectively opened on the opposite sides of the upper housing 1 and the lower housing 2 for guiding the press head 51 and for maintenance and disassembly.

[0027] The cover pressure plate 3 is integrally injection molded or riveted from the lock head 31 and the cover pressure plate 32. The cover pressure plate 32 is a thin sheet in the shape of a racetrack, and its lower edge is pressed across the top of the locking structure 5 after assembly. The lock head 31 has protrusions 33 on both sides that cooperate with the circular concave groove 13. The "concave / protrusion" and the limiting block 12 together realize two stable angular positions and anti-rotation boundaries.

[0028] When the cover plate 32 is in the locked state, it is aligned with the axial direction of the elastic element 6, and when it is in the unlocked state, it is basically perpendicular to the axial direction of the elastic element 6.

[0029] The inner side of the lower housing 2 is integrally formed with a partition plate 4. A pre-set contact gap δ (e.g., 1-4 mm) is provided between the partition plate 4 and the inner edge of the housing to allow the stepped surface 511 of the pressing head 51 to move smoothly within it and serve as a hard limit reference for the stroke. A through hole 41 is provided in the vertical direction of the partition plate 4 for the insertion of the connecting post 72 of the connector 7. A locking structure 5 is arranged on the side of the partition plate 4 facing the through hole 41.

[0030] The locking structure 5 consists of two mirror-symmetrical sliding members 5a and 5b. Each sliding member includes an outer pressing head 51, a middle sliding cavity 52, and an inner clamping part 53. The upper and lower walls of the sliding cavity 52 are fastened together to form a mounting chamber 521. An elastic member 6 (preferably a helical compression spring or elastic block) is installed in the mounting chamber 521. The two ends of the elastic member 6 abut against the inner side of the pressing head 51 of the two sliding members, so that the two sliding members 5a and 5b are constantly pressed together towards the through hole 41. The bottom end of the pressing head 51 is provided with a stepped surface 511, which reciprocates in the contact gap between the upper housing 1 and the partition plate 4. The stepped surface 511 is selectively abutted by the rounded corner end of the cover plate 32 to limit the pressing stroke. The clamping part 53 is symmetrically arranged on the left and right sides along the contraction direction of the elastic member 6. An embedded groove 531 is formed on the clamping surface for cooperating with the cylindrical head 71 of the connecting member 7 to achieve clamping.

[0031] The upper housing 1 and the lower housing 2 have an integrally extended strap piece 15 / 25 on the same side, with a strap groove 151 / 251 formed thereon for threading webbing or ties to achieve a stable connection with the external carrier. The connector 7 includes a cylindrical head 71 and a connecting post 72, the radius of which is smaller than that of the cylindrical head 71, and the cylindrical head 71 matches the shape / size of the embedded groove 531.

[0032] Assembly method: First, place the two sliding parts 5a and 5b in the guide rail (which can be formed by the inner wall ribs of the housing) inside the lower housing 2. Assemble the elastic element 6 between the two pressing heads 51 in the mounting chamber 521 and fasten the upper and lower walls of the sliding cavity 52. ​​Confirm that the pressing head 51 can smoothly reciprocate between the partition plate 4 and the inner edge of the housing, and that the stepped surface 511 can move within the contact gap δ. Then, insert the locking head 31 of the cover locking plate 3 into the keyhole 11 of the upper housing 1, so that the protrusion 33 and the circular concave groove 13 are engaged, and the lower edge of the cover locking plate 32 presses across the locking structure 5. Finally, close the upper housing 1 and the lower housing 2 and lock them together through the fastening structure 16. If necessary, use screws or rivets for secondary fixation.

[0033] Working principle: In the locked state (the cover pressure plate 32 and the elastic element 6 are in the same direction): the rounded end of the cover pressure plate 32 presses against the stepped surface 511 of the pressing head 51, forming a hard limit on the travel of the pressing head 51; at this time, even if there is vibration, impact or accidental contact in the outside, the pressing head 51 cannot reach the release position that makes the clamping part 53 completely retract, and the locking structure 5 continues to use the pre-pressure of the elastic element 6 to hold the cylindrical head 71 tightly in the embedded groove 531.

[0034] In the unlocked state (the cover plate 32 is rotated almost perpendicular to the elastic member 6): the lock head 31 is rotated by the operator along the keyhole 11 (a key can be provided; the key is only inserted into the lock head to rotate it), causing the rounded end of the cover plate 32 to disengage from the stepped surface 511 and be positioned through the recessed groove 13. At this time, the pressing head 51 can be pressed within the stroke limited by the inner edge of the housing and the end of the partition plate 4, causing the sliding members 5a and 5b to retract in opposite directions, the clamping part 53 to move aside, and the cylindrical head 71 to disengage from the embedded groove 531 to complete the unlocking. The entire process is completed in the sequence of "unlocking → pressing → unlocking". The limiting block 12 prevents the cover plate 32 from overstepping its position, avoiding half-locking and half-opening.

[0035] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0036] 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 lockable spring-loaded snap fastener, characterized in that: It includes an upper housing and a lower housing that snap together with the upper and lower covers, a cover locking plate for locking and limiting, and a locking structure for opening and closing control connectors on both sides; The upper housing has a keyhole at its top for housing a cover-pressing locking plate. The cover-pressing locking plate consists of a lock head and a cover plate. The top lock head is positioned corresponding to the keyhole, and the bottom of the lock head is integrally formed with the cover plate, which rotates with the lock head. The lower housing has a partition plate on its inner side for the locking structure to abut and limit its movement. A through hole is provided in the vertical direction of the partition plate for the insertion of a connector. The locking structure is positioned between the partition plate and the through hole, with a cover-pressing locking plate on its top. The locking structure consists of two mirror-symmetrical sliding parts. Each sliding part includes a pressing head, a sliding cavity, and a clamping part. An elastic element is provided inside the sliding cavity. The sliding cavity is snapped together to form an installation chamber for installing the elastic element. The two ends of the elastic element abut against the pressing heads on both sides, and a clamping part is provided on the other side of the sliding cavity. The clamping part is symmetrically arranged on the left and right sides along the contraction direction of the elastic element. An embedding groove for clamping the connecting part is provided on the clamping part.

2. The spring-loaded snap fastener according to claim 1, characterized in that, An extension strap is also provided on the same side of the upper and lower shells, and the extension strap has a strap groove.

3. The spring-loaded snap fastener according to claim 1, characterized in that, The upper and lower housings are also provided with pressing head holes, and the bottom end of the pressing head is provided with a stepped surface, which is used to allow the pressing head to be completely removed from the housing.

4. The spring-loaded snap fastener according to claim 3, characterized in that, The partition plate has pre-set contact gaps between its two sides and the edge of the housing. The stepped surface moves between the edge of the housing and the end of the partition plate. The partition plate can limit the opening and closing degree of the locking structure.

5. The spring-loaded snap fastener according to claim 3, characterized in that, The cover pressure plate is a racetrack-shaped thin sheet. The sheet is fastened to the shell by a fastening structure, with the bottom pressing against the locking structure and the top lock rotating along the keyhole. The cover pressure plate has two states: State 1: The sheet and the elastic element are aligned, the rounded corners of the sheet abut against the stepped surface, restricting the range of motion of the pressing head, and the locking structure is in a locked state; State 2: The sheet and the elastic element are perpendicular to each other, the pressing head moves between the edge of the shell and the end of the partition plate, and the locking structure opens and closes freely.

6. The spring-loaded snap fastener according to claim 5, characterized in that, The inner surface of the upper housing is provided with four equidistant circular recessed grooves along the outer periphery of the keyhole, and two limiting blocks on the same central diameter are provided on the outer side to restrict the over-rotation of the thin sheet; protrusions corresponding to the circular recessed grooves are provided on both sides of the lock head.

7. A lockable spring-loaded snap fastener according to any one of claims 1 to 6, characterized in that, The connector includes a cylindrical head and a connecting post, the radius of which is smaller than that of the cylindrical head, and the cylindrical head is correspondingly positioned with the embedded groove.

Images