A key

Abstract

The utility model discloses a key, including hand -held department and with the transmission part of latch adaptation, on the length direction, the transmission part includes first end and second end, hand -held department installs in the first end of transmission part, the second end of transmission part forms first prying, and this first prying can form the transmission of moment with latch.

Description

Technical Field

[0001] This utility model relates to the field of water technology, and in particular to a component with a quick-connect structure. Background Technology

[0002] In its patent application No. 202422911246.6, the applicant disclosed a plug-in structure suitable for connecting pipes to pipes, pipes to valves, or valves to valves. A second pipe connector is sealed and plugged into a first pipe connector. The first pipe connector has a through-hole on its inner wall. The outer wall of the second pipe connector has an annular limiting groove. The through-hole and the limiting groove intersect. During installation, after the pin is inserted through the through-hole, it is simultaneously confined within the limiting groove of the second pipe connector, thus achieving axial positioning of the two pipe connectors. In the prior art, a portion of the pin protrudes from the through-hole, and this exposed portion serves as a grip for rotation.

[0003] In actual working conditions, due to the small size of the handle, especially after long-term use, the preload between the pin and the pipe joint will gradually increase due to vibration, water hammer and dirt, making it difficult to disassemble and maintain by directly rotating the handle. Utility Model Content

[0004] This utility model provides a plug-in structure, the purpose of which is to overcome the problem of the pins being difficult to disassemble and assemble in the prior art.

[0005] To achieve this objective, the present invention adopts the following technical solution: A key includes a handle portion and a transmission portion adapted to a pin. In the length direction, the transmission portion includes a first end and a second end. The handle portion is mounted on the first end of the transmission portion, and the second end of the transmission portion forms a first latch. The first latch can transmit torque with the pin. The handle portion is annular, and the first end of the transmission portion is provided with a mounting hole through which the handle portion passes.

[0006] In the recommended embodiment, the first lever has at least two force-bearing surfaces. These force-bearing surfaces engage with the pin to achieve torque transmission during use.

[0007] In the recommended implementation, the force-bearing surfaces are not parallel to each other. That is, the first jaw has an irregular shape, which can prevent its corresponding pin from being turned by conventional tools (such as wrenches), thereby enhancing the anti-theft effect.

[0008] In the recommended implementation, the width of the handheld part is greater than the width of the transmission part in the width direction, thereby making the rotation process more effortless.

[0009] In the recommended implementation, the transmission part is rod-shaped, which can effectively reduce costs.

[0010] In the recommended embodiment, along its length, the transmission part includes a cylindrical section and a cutting section fixed to each other. The first end is located on the cutting section, and the second end is located on the cylindrical section. The cutting section has a cutting plane, and the mounting hole passes through the cutting plane. To ensure strength, the transmission part is made of metal (such as copper or stainless steel), and the cutting plane ensures accurate positioning of the mounting hole during machining.

[0011] In the recommended embodiment, a blind hole is provided on the end face of the cylindrical section opposite to the cutting section, and the first wrench is disposed in the blind hole. Using a built-in, concealed first wrench not only makes the key more aesthetically pleasing but also shortens the overall length of the key.

[0012] In the recommended embodiment, an inwardly recessed guide surface is formed between the edge of the end face and the edge of the blind hole, which serves a guiding function to facilitate the quick engagement of the key and the pin.

[0013] The beneficial effects of this utility model are: This utility model discloses a key and a matching pin. In use, turning the key synchronously rotates the pin, effectively reducing the difficulty of assembling and disassembling the pin. Furthermore, the annular handle can move freely within the mounting hole, forming different angles with the transmission unit and transmitting force at these angles, ultimately driving the pin to rotate smoothly. Therefore, this structure is suitable for more complex working conditions and has a wider range of applications. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the key structure in Example 1.

[0015] Figure 2 This is a structural schematic diagram of the key in Embodiment 1 from another perspective.

[0016] Figure 3 This is a schematic diagram of the pin structure.

[0017] Figure 4 This is a schematic diagram of the assembly structure of the key and pin on the two valves.

[0018] Figure 5 This is a schematic diagram of the key structure in Example 2.

[0019] Explanation of reference numerals in the attached drawings: Hand-held part 1, Transmission part 2, Cylindrical section 21, Cutting section 22, Cutting surface 221, Assembly hole 220, Pin 3, Second wrench 31, Threaded section 32, Insert rod 33, First wrench 4, Force-bearing surface 41, Key 100, Pressure reducing valve 5, Gate valve 6, Guide surface 200. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0024] Example 1 Reference Figure 1 A key 100 includes a handle 1 and a transmission part 2. The transmission part 2 cooperates with a latch 3 to transmit torque. In this embodiment, the transmission part 2 is rod-shaped and, to ensure strength, is typically made of metal (e.g., copper or stainless steel). The transmission part 2 includes a cylindrical section 21 and a cutting section 22 fixed to each other. Figure 1 As shown, the cutting section 22 has two symmetrically arranged cutting planes 221.

[0025] Along the length of the transmission part 2, the transmission part 2 includes a first end (not shown in the figure), which is close to the handle part 1 and a second end (not shown in the figure), and the second end is away from the handle part 1. The handle part 1 is mounted on the first end of the transmission part 2, and the second end of the transmission part 2 forms a first wrench 4, which has at least two force-bearing surfaces 41, and in use, the first wrench 4 can transmit torque with the pin 3. In this embodiment, the first end is located at the upper part of the cutting section 22. Specifically, the cutting plane 221 is provided with an assembly hole 220, which penetrates the cutting plane 221; the second end is located at the lower part of the cylindrical section 21.

[0026] like Figure 1 As shown, the handle 1 is ring-shaped, and in this embodiment, it is a key ring. The handle 1 passes through the mounting hole 220 at the first end. The key ring design of the handle 1 is not only convenient to manufacture but also easy to carry. In use, the fingers grip the handle 1 (key ring) and rotate it, thereby driving the pin 3 to rotate. The handle 1 (key ring) can move freely within the mounting hole 220, forming different angles with the transmission part 2, and transmitting force with the transmission part 2 at different angles, ultimately driving the pin 3 to rotate smoothly. Therefore, the above structure can be applied to more complex working conditions and has a wider range of applications.

[0027] Simultaneously refer to Figure 2 The cylindrical segment 21 has a blind hole on its end face away from the cutting segment 22. The first wrench 4 is disposed in the blind hole, and the inner wall of the blind hole forms a force-bearing surface 41. In this embodiment, the first wrench 4 has three force-bearing surfaces 41, and their projections on the axial direction of the transmission part 2 form an equilateral triangle. The shape of the first wrench 4 and the number of force-bearing surfaces 41 are determined according to the actual situation, as long as they can cooperate with the pin 3 to complete the torque transmission. In addition, in order to facilitate the quick docking of the key 100 and the pin 3, an inwardly recessed guide surface 200 is formed between the edge of the end face of the cylindrical segment 21 and the edge of the blind hole. In this embodiment, the guide surface 200 is arc-shaped.

[0028] It is worth mentioning that in this embodiment, the first latch 4 adopts an irregular shape, and the force-bearing surfaces 41 are not parallel to each other. This design can prevent the corresponding pin from being turned by conventional tools (such as wrenches), thereby enhancing the anti-theft effect.

[0029] In addition, in order to make the rotation process more effortless, the width of the hand-held part 1 is greater than the width of the transmission part 2 in the width direction of the key 100.

[0030] Reference Figure 3The pin 3 is adapted to the key 100. The pin 3 includes a second latch 31, a threaded section 32, and a insertion rod 33 connected in sequence. The second latch 31 cooperates with the first latch 4 of the key 100. Through the cooperation of the first latch 4 and the second latch 31, it is ensured that when the key 100 is turned, the pin 3 can also rotate synchronously.

[0031] Reference Figure 4 As shown in the figure, the pressure reducing valve 5 and the gate valve 6 are connected to each other via a plug-in structure. Specifically, the pin 3 is threaded into the connection between the pressure reducing valve 5 and the gate valve 6 to prevent axial displacement of the pressure reducing valve 5 and the gate valve 6. When disassembly or assembly is required, the pressure reducing valve 5 and the gate valve 6 are disassembled or assembled by rotating the key 100 in conjunction with the pin 3.

[0032] Example 2 Reference Figure 5 This embodiment is basically the same in structure as the first embodiment described above. The main difference is that the handheld part 1 is fixed to the first end of the transmission part 2, and the handheld part 1 and the transmission part 2 are fixedly connected, so that the key 100 is a whole, which is more conducive to the transmission of torque. In addition, in order to make the rotation process more effortless, the width of the handheld part 1 is greater than the width of the transmission part 2 in the width direction of the key 100.

[0033] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A key, characterized in that: The device includes a hand-held part (1) and a transmission part (2) adapted to a pin (3). In the length direction, the transmission part (2) includes a first end and a second end. The hand-held part (1) is mounted on the first end of the transmission part (2). The second end of the transmission part (2) forms a first wrench (4). The first wrench (4) can transmit torque with the pin (3). The hand-held part (1) is annular. The first end of the transmission part (2) is provided with an assembly hole (220). The hand-held part (1) passes through the assembly hole (220).

2. The key according to claim 1, characterized in that: The first wrench (4) has at least two force-bearing surfaces (41).

3. The key according to claim 2, characterized in that: The force-bearing surfaces (41) are not parallel to each other.

4. The key according to claim 1, characterized in that: In the width direction, the width of the hand-held part (1) is greater than the width of the transmission part (2).

5. The key according to claim 1, characterized in that: The transmission part (2) is rod-shaped.

6. The key according to claim 5, characterized in that: Along the length direction, the transmission part (2) includes a cylindrical section (21) and a cutting section (22) fixed to each other, the first end is located on the cutting section (22), the second end is located on the cylindrical section (21), and the cutting section (22) has a cutting plane (221), and the mounting hole (220) passes through the cutting plane (221).

7. The key according to claim 6, characterized in that: The cylindrical section (21) has a blind hole on its end face away from the cutting section (22), and the first wrench (4) is located in the blind hole.

8. The key according to claim 7, characterized in that: An inwardly recessed guide surface (200) is formed between the edge of the end face and the edge of the blind hole.

Images