Nut structure and water inlet valve

Abstract

The utility model discloses a nut structure and a water inlet valve, the nut structure comprises an upper body, the inner circumference of the upper body is provided with a conical surface, and the lower end of the upper body is provided with a first boss; connecting pieces are annularly distributed on the lower body, internal threads are arranged on the inner circumferential walls of the connecting pieces, and a second boss is arranged on the portion, located on the peripheries of the connecting pieces, of the lower body; the upper body can be arranged on the periphery of the connecting piece in a sleeving mode, the first boss can be matched with the second boss so that the upper body can drive the lower body to rotate synchronously, and the connecting piece can be retracted inwards under matching of the conical face so that the internal threads can be matched with the external threads. When the internal threads and the external threads are screwed tightly, the first boss can cross the second boss, so that the upper body does not drive the lower body to rotate, and the water inlet valve comprises the nut structure. And screw loose or damage caused by overlarge torsion can be avoided.

Description

Technical Field

[0001] This utility model relates to a nut structure and a water inlet valve, which can be applied to components of a toilet tank. Background Art

[0002] Quick-release nuts are often used in existing toilet tank components. However, although existing quick-release nuts can be installed quickly, they do not have the function of limiting torque. In particular, these nuts and connectors are made of plastic materials. When the torque is too large, the teeth may slip or the connectors may be damaged, so they need to be replaced with new ones. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a nut structure and a water inlet valve.

[0004] This utility model is achieved through the following technical solution:

[0005] A nut structure includes: an upper body with a conical surface on its inner periphery and a first boss at its lower end; and a lower body with a connecting piece annularly arranged on its lower body, an internal thread on the inner periphery of the connecting piece, and a second boss on the lower body located on the outer periphery of the connecting piece. The upper body can be fitted onto the outer periphery of the connecting piece, the first boss can engage with the second boss to enable the upper body to drive the lower body to rotate synchronously, and the connecting piece can be retracted under the engagement of the conical surface to enable the internal thread to engage with the external thread. When the internal thread and external thread are tightened, the first boss can pass over the second boss, so that the upper body no longer drives the lower body to rotate.

[0006] In an embodiment of the present invention, a first guide surface is provided on one side of the first boss, and a second guide surface is provided on one side of the second boss. The first guide surface can be matched with the second guide surface to allow the first boss to pass over the second boss.

[0007] In this embodiment of the present invention, the first boss is arranged in a ring on the outer periphery of the lower end of the upper body, and the second boss is arranged in a ring on the outer periphery of the lower body.

[0008] In this embodiment of the present invention, an elastic arm is provided at the lower end of the upper body, and the first protrusion is provided below the elastic arm.

[0009] In an embodiment of the present invention, the connecting piece is an elastic piece, the lower end of the connecting piece is connected to the lower body, the upper end of the connecting piece is inclined toward the outer periphery, the inner peripheral wall of the upper end of the connecting piece is provided with an internal thread, and a gap is formed between two adjacent connecting pieces to facilitate the inward retraction of the connecting piece.

[0010] In this embodiment of the invention, the outer periphery of the upper body is provided with a lug to facilitate its rotation.

[0011] This utility model also discloses another technical feature:

[0012] A water inlet valve comprises the above-mentioned nut structure.

[0013] In an embodiment of the present invention, a connecting pipe is further included, and an outer circumference of the connecting pipe is provided with an external thread that can cooperate with the internal thread.

[0014] In an embodiment of the present invention, the connecting pipe can be sleeved in the mounting hole of the mounting platform, and the mounting surface at the lower end of the mounting platform can be abutted and matched with the upper end surface of the upper body.

[0015] The nut structure and water inlet valve of this utility model have the following beneficial effects: they enable quick installation while also limiting torque, allowing for rapid locking and preventing stripping or damage caused by excessive torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solution of this utility model, 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 It is a schematic diagram of the present utility model.

[0018] Figure 2 It is a schematic diagram of the utility model when in use.

[0019] Figure 3 This is a schematic diagram of the upper body of this utility model.

[0020] Figure 4 This is a schematic diagram of the lower body of this utility model. Detailed Implementation

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] 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 to 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 device or element referred to 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.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0024] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0025] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0026] Referring to the accompanying drawings, a nut structure includes: an upper body 10, with a conical surface 11 on its inner circumference and a first boss 12 at its lower end; and a lower body 20, with a connecting piece 21 annularly arranged on its lower body, the connecting piece having an internal thread 23 on its inner circumferential wall, and a second boss 22 on the lower body located on the outer circumference of the connecting piece. The upper body can be fitted onto the outer circumference of the connecting piece, and the first boss can cooperate with the second boss to enable the upper body to drive the lower body to rotate synchronously, achieving a threaded connection. The connecting piece can perform internal threading with the cooperation of the conical surface. The upper body retracts to allow the internal thread to engage with the external thread. When the connecting piece is not retracted, the lower body can move linearly axially around the outer circumference of the external thread without rotation. Rotation is only required when the connecting piece retracts and the internal and external threads begin to contact each other, thus achieving thread locking. After the internal and external threads are tightened, if the two threads continue to rotate in this state, it will cause damage to the threads and lead to stripping. However, this invention allows the first boss to pass over the second boss, so that the upper body no longer drives the lower body to rotate, meaning the two threads are no longer tightened.

[0027] Preferably, a first guide surface 14 is provided on one side of the first boss, and a second guide surface 24 is provided on one side of the second boss. The first guide surface can cooperate with the second guide surface to allow the first boss to pass over the second boss. Of course, when the first guide surface and the second guide surface are in contact, the upper body can drive the lower body to rotate. Only when the two threads are tightened will the first boss pass over the second boss.

[0028] Furthermore, the first protrusion is arranged in a ring on the outer periphery of the lower end of the upper body, and the second protrusion is arranged in a ring on the outer periphery of the lower body.

[0029] Furthermore, the lower end of the upper body is provided with an elastic arm 13, and the first boss is located below the elastic arm. When the thread is tightened, the upper body is rotated. Under the action of the elastic arm, the first boss moves up and passes over the second boss, which can ensure that it will not rotate in the tightening direction, thus protecting the thread and other components.

[0030] Preferably, the connecting piece is an elastic piece, with its lower end connected to the lower body and its upper end inclined outwards. The inner circumferential wall of the upper end of the connecting piece is provided with an internal thread, and a gap 25 is formed between adjacent connecting pieces to facilitate their retraction, preventing them from overlapping when the inner circumference of the connecting pieces is maintained. The outer circumference of the upper body is provided with a lug 15 to facilitate its rotation, thus allowing for easy rotation of the upper body.

[0031] This utility model also discloses another technical feature:

[0032] A water inlet valve includes the aforementioned nut structure. It also includes a connecting pipe 30, the outer circumference of which is provided with an external thread 31 capable of engaging with an internal thread. Of course, components such as a float 32 are fitted onto the connecting pipe, which are similar to existing technologies and will not be described in detail again.

[0033] During installation, the connecting pipe can be fitted into the mounting hole 41 of the mounting platform 40, and the mounting surface 42 at the lower end of the mounting platform can abut against the upper end surface of the upper body.

[0034] Specifically, this utility model describes a nut that allows for quick installation and limits torque. It includes an upper body and a lower body. The upper body has a conical surface, an elastic arm, and a first boss. The lower body has a connecting piece and a second boss. During installation, the upper body is first placed on the lower body, at which point the upper and lower bodies can be separated. They are then inserted together into the bottom of a connecting tube. At this point, the upper end face of the upper body rests against the mounting surface, and the connecting piece of the lower body rests against the conical surface of the upper body. As the lower body continues to be pushed upwards, the connecting piece retracts under the action of the conical surface, engaging with the external thread of the connecting tube. At this point, both the upper and lower bodies are "hung" on the connecting tube. Then, the upper body is rotated, causing the first boss of the elastic arm of the upper body to abut against the second boss of the lower body, thus causing the lower body to rotate together. When the torque limit is exceeded, the first boss of the elastic arm will pass over the second boss and no longer cause the lower body to rotate.

[0035] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A nut structure, characterized in that: include: An upper body, wherein the inner circumference of the upper body is provided with a conical surface, and the lower end of the upper body is provided with a first boss; A lower body, wherein a connecting piece is annularly arranged on the lower body, an inner peripheral wall of the connecting piece is provided with an internal thread, and a second boss is provided on the lower body located at the outer periphery of the connecting piece; The upper body can be sleeved on the outer circumference of the connecting piece, the first boss can cooperate with the second boss so that the upper body can drive the lower body to rotate synchronously, and the connecting piece can be retracted inward with the cooperation of the conical surface so that the internal thread can cooperate with the external thread; when the internal thread and the external thread are tightened, the first boss can pass over the second boss so that the upper body no longer drives the lower body to rotate.

2. A nut structure according to claim 1, characterized in that: A first guide surface is disposed on one side of the first boss, and a second guide surface is disposed on one side of the second boss. The first guide surface can be matched and connected with the second guide surface so that the first boss passes over the second boss.

3. A nut structure according to claim 2, characterized in that: The first boss is arranged in an annular manner on the outer peripheral side of the lower end of the upper body, and the second boss is arranged in an annular manner on the outer peripheral side of the lower body.

4. A nut structure according to any one of claims 1 to 3, characterized in that: An elastic arm is disposed at the lower end of the upper body, and the first boss is disposed below the elastic arm.

5. A nut structure according to claim 4, characterized in that: The connecting piece is an elastic piece, the lower end of which is connected to the lower body, the upper end of which is inclined toward the outer periphery, the inner peripheral wall of the upper end of the connecting piece is provided with an internal thread, and a gap is formed between two adjacent connecting pieces to facilitate the inward retraction of the connecting pieces.

6. A nut structure according to claim 5, characterized in that: The outer periphery of the upper body is provided with lugs for driving the upper body to rotate.

7. A water inlet valve, characterized in that: It comprises a nut structure as described in any one of claims 1 to 6 above.

8. A water inlet valve according to claim 7, characterized in that: It also includes a connecting pipe, the outer circumference of which is provided with an external thread that can match with the internal thread.

9. A water inlet valve according to claim 8, characterized in that: The connecting pipe can be sleeved in the mounting hole of the mounting platform, and the mounting surface at the lower end of the mounting platform can be abutted and matched with the upper end surface of the upper body.

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