A concealed strike

Abstract

The application discloses a hidden lock tongue and belongs to the technical field of water cup lock catch accessories. The hidden lock tongue comprises a reverse push telescopic mechanism and a pushing part. The reverse push telescopic mechanism is composed of a sliding cavity, a reverse push elastic mechanism, a reversing gear, a reverse push plate and a lock tongue plate. The reverse push elastic mechanism is installed at the top of the sliding cavity and abuts against the reverse push plate. The reverse push plate and the lock tongue plate are arranged at intervals and are equipped with the reversing gear in the middle. The bottom of the lock tongue plate is provided with the lock tongue. The bottom of the reverse push plate is provided with the horizontally arranged pushing part. The automatic linkage of the opening and closing of the turnover cover and the stretching and retracting of the lock tongue is realized through the gear meshing linkage structure. When the turnover cover is not buckled, the lock tongue is completely hidden. When the turnover cover is buckled, the lock tongue is stretched out and locked. The application has the advantages of compact structure, accurate transmission and stable operation. The problems of the traditional lock tongue, such as easy damage and easy dust accumulation, are solved. The aesthetic property, the sanitary property and the durability are greatly improved. The application is suitable for various water cup turnover cover lock catch structures.

Description

Technical Field

[0001] This invention belongs to the technical field of water cup locking accessories, specifically relating to a concealed locking tongue. Background Technology

[0002] Currently, most flip-top water bottle caps with locking mechanisms on the market use either a fixed or simple spring-loaded locking mechanism. A fixed locking tongue that is constantly exposed not only affects the overall aesthetics of the flip-top cap but also makes it prone to scratches and collisions with external objects during carrying and storage, leading to deformation and wear of the tongue, which in turn affects the opening and closing accuracy and locking stability of the lock. Furthermore, an exposed tongue easily accumulates dust and dirt, making cleaning more difficult. Existing spring-loaded latch structures are simple, mostly relying on a single spring for popping and resetting. This results in poor structural linkage, unstable latch extension and retraction, and after prolonged use, problems such as jamming, rebound failure, and insecure locking easily occur. They also cannot achieve precise linkage between the flip-top opening / closing state and the latch extension / retraction state, leading to a poor user experience and a short product lifespan. Based on the shortcomings of existing technology, there is an urgent need for a concealed latch structure that can automatically extend and retract with the flip-top latch in the closed state, is completely hidden when not in use, has a stable structure, and provides precise linkage. Summary of the Invention

[0003] The purpose of this invention is to solve the problems of exposed locking tongues on existing water cups, which are easily damaged, prone to dust accumulation, have poor telescopic linkage, and are unstable in operation. The invention provides a concealed locking tongue that can completely hide the locking tongue when the flip cover is not closed and automatically extend and lock when the flip cover is closed. The structure is precisely linked, runs smoothly, and is highly durable.

[0004] To achieve the above objectives, the present invention provides: A concealed latch, comprising a flip-top lid and a cup lid base, The flip-top is rotatably mounted on the upper part of the cup lid seat by means of a torsion spring. The flip-top is provided with a reverse push telescopic mechanism. The cup lid seat is provided with a push part, an unlock button and a locking tongue through hole. The reverse thrust telescopic mechanism is installed inside the flip cover; the reverse thrust telescopic mechanism includes a sliding cavity, a reverse thrust elastic mechanism, a reversing gear, a reverse thrust plate, and a locking tongue plate. The sliding cavity is located inside the reverse thrust telescopic mechanism, the reverse thrust elastic mechanism is located at the top edge of the sliding cavity, the upper end of the reverse thrust elastic mechanism abuts against the top of the sliding cavity, the lower end of the reverse thrust elastic mechanism abuts against the reverse thrust plate, and locking tongue plates are spaced apart on the outer side of the reverse thrust plate. A reversing gear is assembled between the push plate and the locking tongue plate. Both the push plate and the locking tongue plate are provided with a rack structure on the side facing the reversing gear. Both the push plate and the locking tongue plate are driven by meshing with the reversing gear through the rack structure. A locking tongue is fixedly provided at the bottom of the locking tongue plate, and a locking tongue guide slope is provided below the locking tongue. The pushing part is horizontally disposed on the top of the cup lid base and located below the reverse pushing plate; when the lid is flipped and fastened, the pushing part pushes against the reverse pushing plate, pushing the reverse pushing plate to move upward; The unlock button is movably disposed on the outer wall surface of the cup lid seat. A locking plate protrudes into the cup lid seat from the inner side of the unlock button. The locking plate is embedded in the cup lid seat and has a locking tongue buckle hole corresponding to the locking tongue. The locking protrusion protrudes into the locking tongue buckle hole and has a locking guide slope above the locking protrusion. The latch hole is located on the top of the cup lid seat and is longitudinally connected to the latch buckle hole; Work process: When the flip cover is fastened, the pushing part abuts against and pushes the reverse pushing plate upward, driving the reversing gear to rotate clockwise, driving the locking tongue plate to move downward, so that the locking tongue extends out of the flip cover. The locking tongue passes through the locking tongue through hole, and the locking tongue guide slope and the locking guide slope form a guide to guide the locking tongue into the locking tongue buckle hole. The locking tongue and the locking protrusion lock together to realize the locking of the flip cover and the cup lid seat. When the flip cover is unfastened, press the unlock button, the latch hole moves, driving the latch and locking protrusion to release the locking structure, thus unlocking the flip cover and the cup lid seat. The flip cover flips upward, the push part separates from the push plate, the push elastic mechanism pushes the push plate downward, drives the reversing gear to rotate counterclockwise, drives the latch plate to move upward, so that the latch is completely retracted into the flip cover, thus hiding the latch.

[0005] Furthermore, a reversing shaft hole is provided in the middle of the sliding cavity, and a reversing shaft is provided at the center of the reversing gear shaft; the reversing shaft is pivotally connected to the reversing shaft hole.

[0006] Furthermore, the thrust-reverse elastic mechanism includes a thrust-reverse spring disposed on the top of the thrust-reverse plate, with one end of the thrust-reverse spring abutting against the top of the sliding cavity and the other end abutting against the top of the thrust-reverse plate.

[0007] Furthermore, the thrust-reverse elastic mechanism includes a first magnetic element disposed at the top of the sliding cavity corresponding to the thrust plate, and a second magnetic element disposed at the top of the thrust plate; the polarity of the opposite surfaces of the first magnetic element and the second magnetic element is the same. Beneficial effects

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention adopts a gear meshing linkage structure. Through the precise transmission of the push plate, reversing gear, and locking tongue plate, the locking tongue can automatically extend and retract as the flip cover is opened and closed. When the flip cover is open, the locking tongue is completely hidden, which completely solves the problems of traditional exposed locking tongues being easily scratched and deformed, and accumulating dust and dirt, thus improving the product's aesthetics and hygiene.

[0009] 2. The overall structure has strong linkage. It relies on the elastic force of the reverse push mechanism and the pushing force of the push part to achieve automatic switching without manual operation. The opening, closing and locking are convenient and smooth. The gear meshing transmission method has high stability, precise extension and retraction stroke, and no jamming or deviation. It greatly improves the user experience.

[0010] 3. All components are integrated and installed inside the flip-top lid, resulting in a compact structure, small footprint, and compatibility with conventional flip-top lids for water cups, making it highly versatile; the mechanical transmission structure is highly durable and not prone to failure with long-term repeated use, effectively extending the product's lifespan. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the left-side view structure in the exploded state of the present invention; Figure 2 This is a schematic diagram of the internal structure of the reverse telescopic mechanism of the present invention from a frontal perspective; Figure 3 This is a schematic diagram of the unlock button structure from an oblique angle in this invention; Figure 4 This is a schematic diagram of the cup lid holder structure from an oblique angle. Figure 5 This is a schematic diagram of the internal structure of the reverse telescopic mechanism from the front view, according to another embodiment of the present invention. The attached icon is shown as follows:

[0012] 1-Flip cover, 10-Torsion spring, 11-Reverse thrust telescopic mechanism, 111-Sliding cavity, 1111-Reversing shaft hole, 112-Reverse thrust elastic mechanism, 1121-Reverse thrust spring, 1122a-First magnetic component, 1122b-Second magnetic component, 113-Reversing gear, 1131-Reversing shaft, 114-Reverse thrust plate, 115-Lock tongue plate, 1151-Lock tongue, 11511-Lock tongue guide slope; 2-Cup lid seat, 21-Push part, 22-Unlock button, 221-Locking plate, 2211-Lock tongue hole, 22111-Locking protrusion, 221111-Locking guide slope, 23-Lock tongue through hole. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and reference numerals. Those skilled in the art should understand that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0014] like Figures 1-4 As shown, this embodiment discloses a concealed locking tongue, including a flip cover 1 and a cup lid seat 2; the flip cover 1 is rotatably provided with the upper part of the cup lid seat 2 by means of a torsion spring 10, and a reverse push telescopic mechanism 11 is installed inside the flip cover 1.

[0015] The reverse thrust telescopic mechanism 11 includes a sliding cavity 111, a reverse thrust spring 1121, a reversing gear 113, a reverse thrust plate 114, and a locking tongue plate 115. The sliding cavity 111 is formed inside the reverse thrust telescopic mechanism 11, and a reversing shaft hole 1111 is opened in the middle of the sliding cavity 111; a reversing shaft 1131 is set at the axis of the reversing gear 113, and the reversing shaft 1131 is pivotally mounted in the reversing shaft hole 1111, so that the reversing gear 113 can rotate around the reversing shaft 1131 in the sliding cavity 111.

[0016] The thrust spring 1121 is positioned at the top edge inside the sliding cavity 111; the upper end of the thrust spring 1121 abuts against the top inner side of the flip cover 1, and the lower end of the thrust spring 1121 abuts against the thrust plate 114. Locking tongue plates 115 are spaced apart on the outer side of the thrust plate 114; rack structures are formed on the opposite sidewalls of the thrust plate 114 and the locking tongue plates 115, respectively, and the thrust plate 114 and the locking tongue plates 115 are driven by meshing with the reversing gear 113 via the racks. When the thrust plate 114 moves up and down along the sliding cavity 111, the reversing gear 113 can drive the locking tongue plates 115 to move in the opposite direction in a straight line.

[0017] A locking tongue 1151 is fixedly installed at the bottom of the locking tongue plate 115, and a locking tongue guide slope 11511 is formed at the lower end of the locking tongue 1151. A pushing part 21 is horizontally provided at the top of the cup lid seat 2, and the pushing part 21 is located directly below the push plate 114; when the flip cover 1 is snapped down, the pushing part 21 pushes against the push plate 114 upward, driving the push plate 114 to move upward along the sliding cavity 111.

[0018] An unlocking button 22 is movably mounted on the outer wall of the cup lid holder 2. A locking plate 221 is integrally protruding from the inner side of the unlocking button 2 into the cup lid holder 2, extending into the inner cavity of the cup lid holder 2. The locking plate 221 has a latch hole 2211 corresponding to the position of the latch 1151. A locking protrusion 22111 protrudes inside the latch hole 22111, and a locking guide slope 221111 is formed on the upper side of the locking protrusion 221111. A latch through hole 23 is also provided at the top of the cup lid holder 2, which is longitudinally connected to the latch hole 22111, allowing the latch 1151 to pass through the latch through hole 23 and enter the latch hole 22111.

[0019] The working principle of this embodiment is as follows: During the downward snapping of the flip cover 1, the pushing part 21 of the cup lid seat 2 abuts against and pushes the reverse pushing plate 114 upward. The reverse pushing plate 114 moves upward, driving the reversing gear 113 to rotate clockwise. The reversing gear 113 drives the locking tongue plate 115 to move downward, and the locking tongue 1151 extends downward out of the flip cover 1 and passes through the locking tongue through hole 23. The locking tongue guide slope 11511 and the locking guide slope 221111 guide and cooperate with each other, guiding the locking tongue 1151 to slide into the locking tongue buckle hole 2211. The locking tongue 1151 and the locking protrusion 22111 engage with each other, completing the locking of the flip cover 1 and the cup lid seat 2.

[0020] When unlocking is required, press the unlock button 22 on the outside of the cup lid seat 2. The unlock button 22 moves the locking plate 221, and the latch hole 2211 moves synchronously. The locking protrusion 22111 disengages from the latch 1151, releasing the latch engagement. Flip the flip cover 1 upwards, and the pushing part 21 separates from the push plate 114. The push spring 1121 releases its elastic force and pushes the push plate 114 downwards. The reversing gear 113 rotates counterclockwise, causing the latch plate 115 to move upwards. The latch 1151 is completely retracted into the flip cover 1, thus hiding the latch.

[0021] Another embodiment of the present invention utilizes the repulsive force generated by identical magnetism to replace the elastic force, such as... Figure 5 As shown, a first magnetic component 1122a is fixedly installed at the top of the sliding cavity 111 at the position corresponding to the push plate 114; a second magnetic component 1122b is fixedly installed on the top of the push plate 114. The opposing surfaces of the first magnetic component 1122a and the second magnetic component 1122b have the same polarity and repel each other. When the flip cover is opened, the first magnetic component 1122a and the second magnetic component 1122b, which are close to each other, repel each other, pushing the push plate 114 downward, driving the reversing gear 113 to rotate counterclockwise, and causing the locking tongue plate 115 to move upward until the locking tongue 1151 is completely retracted into the flip cover 1, thus hiding the locking tongue. During the downward snapping of the flip cover 1, the pushing part 21 of the cup lid seat 2 abuts against and pushes the push plate 114 upward. The push plate 114 overcomes the repulsive force between the first magnetic element 1122a and the second magnetic element 1122b and moves upward, driving the reversing gear 113 to rotate clockwise. The reversing gear 113 drives the locking tongue plate 115 to move downward. The locking tongue 1151 extends downward out of the flip cover 1 and passes through the locking tongue through hole 23 into the locking tongue buckle hole 2211 to achieve snapping.

[0022] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A concealed latch, comprising a flip-top cover (1) and a cup lid seat (2), characterized in that, The flip cover (1) is rotatably provided with the upper part of the cup lid seat (2) by means of a torsion spring (10). The flip cover (1) is provided with a push-out telescopic mechanism (11). The cup lid seat (2) is provided with a push part (21), an unlock button (22) and a locking tongue through hole (23). The reverse thrust telescopic mechanism (11) is installed inside the flip cover (1); the reverse thrust telescopic mechanism (11) includes a sliding cavity (111), a reverse thrust elastic mechanism (112), a reversing gear (113), a reverse thrust plate (114), and a locking tongue plate (115). The sliding cavity (111) is located inside the reverse thrust telescopic mechanism (11), and the reverse thrust elastic mechanism (112) is located at the top edge of the inner edge of the sliding cavity (111). The upper end of the reverse thrust elastic mechanism (112) abuts against the top of the sliding cavity (111), and the lower end of the reverse thrust elastic mechanism (112) abuts against the reverse thrust plate (114). The outer side of the reverse thrust plate (114) is provided with a locking tongue plate (115). A reversing gear (113) is assembled between the push plate (114) and the locking tongue plate (115). Both the push plate (114) and the locking tongue plate (115) are provided with rack structures on the side facing the reversing gear (113). Both the push plate (114) and the locking tongue plate (115) are meshed with the reversing gear (113) through the rack structures. A locking tongue (1151) is fixedly provided at the bottom of the locking tongue plate (115). The pushing part (21) is horizontally arranged on the top of the cup lid seat (2) and located below the push plate (114); when the flip lid (1) is fastened, the pushing part (21) pushes the push plate (114) and pushes the push plate (114) upward; The unlock button (22) is movably disposed on the outer wall surface of the cup lid seat (2). A locking plate (221) protrudes into the cup lid seat (2) from the inner side of the unlock button (22). The locking plate (221) is embedded inside the cup lid seat (2). The locking plate (221) is provided with a locking tongue buckle hole (2211) corresponding to the locking tongue (1151). The locking protrusion (22111) protrudes into the locking tongue buckle hole (2211). The latch hole (23) is located on the top of the cup lid seat (2) and is longitudinally connected to the latch buckle hole (2211); When the flip cover (1) is fastened, the pushing part (21) abuts against and pushes the push plate (114) upward, driving the reversing gear (113) to rotate clockwise, driving the locking tongue plate (115) to move downward, so that the locking tongue (1151) extends out of the flip cover (1), the locking tongue (1151) enters the locking tongue buckle hole (2211) through the locking tongue through hole (23), and the locking tongue (1151) and the locking protrusion (22111) lock each other, realizing the locking of the flip cover (1) and the cup lid seat (2); When the flip cover (1) is unfastened, press the unlock button (22), the latch hole (2211) moves, driving the latch (1151) and the locking protrusion (22111) to release the locking structure, thereby unlocking the flip cover (1) and the cup lid seat (2). The flip cover (1) flips upward, the push part (21) separates from the push plate (114), the push elastic mechanism (112) pushes the push plate (114) downward, driving the reversing gear (113) to rotate counterclockwise, driving the latch plate (115) to move upward, so that the latch (1151) is completely retracted into the flip cover (1), thereby hiding the latch (1151).

2. The concealed locking tongue according to claim 1, characterized in that, The latch (1151) is provided with a latch guide slope (11511) below it and a locking guide slope (221111) is provided above it. The latch guide slope (11511) and the locking guide slope (221111) form a guide to guide the latch (1151) into the latch buckle hole (2211).

3. A concealed locking tongue according to claim 1, characterized in that, A reversing shaft hole (1111) is provided in the middle of the sliding cavity (111), and a reversing shaft (1131) is provided at the center of the reversing gear (113); the reversing shaft (1131) is pivotally connected to the reversing shaft hole (1111).

4. A concealed locking tongue according to claim 1, characterized in that, The thrust elastic mechanism (112) includes a thrust spring disposed on the top of the thrust plate, with one end of the thrust spring abutting the top of the sliding cavity and the other end abutting the top of the thrust plate.

5. A concealed locking tongue according to claim 1, characterized in that, The reverse thrust elastic mechanism (112) includes a first magnetic element (1122a) disposed on the top of the sliding cavity (111) at a position corresponding to the reverse thrust plate (114), and a second magnetic element (112b) disposed on the top of the reverse thrust plate (114); the first magnetic element (112a) and the second magnetic element (112b) have the same polarity on opposite sides.

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