A crank assembly and a coffee grinder

Abstract

The application belongs to the technical field of bean grinders, and particularly relates to a rocking handle assembly and a bean grinder. The rocking handle assembly comprises a rocking handle and a rocking arm. The rocking arm comprises a first arm body, a second arm body and a sliding cover which are arranged in the same direction. The sliding cover is slidably installed outside the second arm body and can reciprocate between a first position and a second position. When the sliding cover is located at the first position, the sliding cover partially covers the first arm body to limit the rotation of the second arm body relative to the first arm body, so that the second arm body is unfolded. When the sliding cover is located at the second position, the sliding cover is separated from the first arm body, so that the second arm body can rotate relative to the first arm body, and the second arm body is folded. The sliding cover is slidably installed outside the second arm body and the first arm body, so that the folding and unfolding of the second arm body are realized, the labor-saving requirement of grinding is met, and the storage is facilitated.

Description

Technical Field

[0001] This application belongs to the field of coffee grinder technology, specifically relating to a crank assembly and a coffee grinder. Background Technology

[0002] Currently, there are manual and electric coffee grinders on the market. The main principle of a manual coffee grinder is that the user holds the grinder barrel and rotates the crank handle at the top of the barrel to drive the main shaft inside the grinder. The main shaft drives the inner grinding wheel to rotate inside the fixed outer grinding wheel. When the coffee beans inside the barrel enter between the rotating inner and outer grinding wheels, the coffee beans are ground and fall into the receiving chamber or receiving cup for storage, thus completing the grinding process.

[0003] When grinding coffee beans with a manual coffee grinder, a longer crank handle is more labor-saving and convenient. However, a longer crank handle tends to result in a larger packaging size for the coffee machine, leading to higher shipping and packaging costs. Furthermore, a longer crank handle makes the coffee machine take up more space, hindering storage and potentially causing the grinder to tilt, thus negatively impacting the overall user experience. Utility Model Content

[0004] The purpose of this application is to at least solve one of the technical problems existing in the prior art, and to provide a crank assembly and a coffee grinder, which achieves the folding and unfolding of the second arm body by slidingly installing a sliding cover on the outside of the second arm body and the first arm body, thereby meeting the labor-saving requirements of grinding and facilitating storage.

[0005] The technical solution adopted by this application to solve its technical problem is: In a first aspect, a rocker arm assembly includes: Crank handle; A rocker arm includes a first arm body, a second arm body, and a sliding cover extending in the same direction. One end of the first arm body is provided with a pivot connection part, and the other end of the first arm body is hinged to the second arm body. The rocker handle is provided at the end of the second arm body away from the first arm body. The sliding cover is slidably installed on the outside of the second arm body and can slide back and forth between a first position and a second position. When the sliding cover is in the first position, the sliding cover partially covers the first arm body to restrict the second arm body from rotating relative to the first arm body, so as to unfold the second arm body; when the sliding cover is in the second position, the sliding cover disengages from the first arm body so that the second arm body can rotate relative to the first arm body, so as to fold the second arm body.

[0006] In conjunction with the first aspect, in some implementations of the first aspect, the first arm and the second arm are hinged together by a first hinge axis extending laterally, so that the second arm can be folded downward.

[0007] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the crank is hinged to the second arm via a second hinge axis, and the second hinge axis is parallel to the extending direction of the first hinge axis.

[0008] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the first arm body and / or the second arm body are provided with a limiting structure. When the sliding cover is located at the first position and the second position, the limiting structure is used to restrict the sliding cover from sliding along the second arm body.

[0009] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, a first elastic telescopic component is provided between the sliding cover and the second arm body, and the first elastic telescopic component is arranged along the extension direction of the second arm body.

[0010] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the second arm body is provided with a first mounting groove at one end near the first arm body, the inner side of the sliding cover is provided with an abutment post extending into the first mounting groove, and the first elastic telescopic component is installed in the first mounting groove and located on the side of the abutment post away from the first arm body.

[0011] In combination with the first aspect and the above implementation methods, in some implementation methods of the first aspect, the first arm body is provided with a docking groove at one end near the second arm body, and when the sliding cover is in the first position, the sliding cover extends into the docking groove and abuts against the first arm body.

[0012] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the limiting structure includes a first limiting post and a second elastic telescopic component. The first arm body is provided with a second mounting groove below the docking groove, and the second mounting groove communicates with the docking groove. The sliding cover is provided with a limiting groove at a position corresponding to the docking groove. The first limiting post is installed in the second mounting groove, and the second elastic telescopic component abuts between the first limiting post and the second mounting groove to drive the first limiting post to extend out of the second mounting groove and extend into the limiting groove when the sliding cover is in the first position.

[0013] In combination with the first aspect and the above-described implementation, some implementations of the first aspect further include a second limiting post and a third elastic telescopic component. The first arm body has a protruding structure at the position where it is hinged to the second arm body, and a third mounting groove is provided on both sides of the protruding structure. The second limiting post is installed in the third mounting groove, and the third elastic telescopic component abuts between the second limiting post and the third mounting groove to drive the second limiting post to extend out of the third mounting groove and abut against both sides of the second arm body.

[0014] In a second aspect, a coffee grinder includes the crank assembly described in any implementation of the first aspect.

[0015] One of the above technical solutions has at least one of the following advantages or beneficial effects: The crank assembly of this application has a sliding cover slidably installed on the outside of the second arm. When the sliding cover is in the first position, it covers the outside of the first and second arms and forms a circumferential limit on the first and second arms, preventing the second arm from rotating relative to the first arm and enabling the second and first arms to unfold in the same direction. When the sliding cover is in the second position, it only covers the outside of the second arm, allowing the second arm to rotate relative to the first arm and achieve a folding action. When the second arm is in the unfolded state, the combination of the first and second arms meets the labor-saving requirements for grinding coffee; when the second arm is in the folded state, it saves the space occupied by the crank assembly, prevents the grinder from tilting, facilitates storage, and thus reduces transportation and packaging costs. Attached Figure Description

[0016] The following description, in conjunction with the accompanying drawings, further illustrates this application: Figure 1 This is a schematic diagram of the second arm in an embodiment of this application in its deployed state; Figure 2 yes Figure 1 A cross-sectional schematic diagram of one embodiment is shown; Figure 3 This is a schematic diagram of the second arm in a folded state according to an embodiment of this application; Figure 4 yes Figure 3 A cross-sectional schematic diagram of one embodiment is shown; Figure 5 yes Figure 3 A top view schematic diagram of one embodiment is shown. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0018] In this application, when directions (up, down, left, right, front, and back) are described, it is only for the purpose of describing the technical solution of this application, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on this application.

[0019] In this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number; "above," "below," "within," etc. are understood to include the stated number. In the description of this application, the terms "first" and "second" are used only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0020] In this application, unless otherwise explicitly defined, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to direct connection or indirect connection through an intermediate medium; they can refer to fixed connection, detachable connection, or integral molding; they can refer to mechanical connection, electrical connection, or connection capable of mutual communication; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this application based on the specific content of the technical solution.

[0021] See Figure 1 and Figure 3 The embodiments of this application provide a crank assembly, including a crank 1 and a rocker arm 2. The crank 1 is for a user to hold and rotate the crank 1 assembly, thereby driving the spindle inside the grinder to rotate and realize the grinding action of coffee beans and other beans.

[0022] The rocker arm 2 includes a first arm body 21, a second arm body 22, and a sliding cover 23 extending in the same direction. One end of the first arm body 21 is provided with a pivot connection part 211, which is used to connect to the main shaft inside the coffee grinder. The other end of the first arm body 21 is hinged to the second arm body 22 so that the second arm body 22 can rotate relative to the first arm body 21.

[0023] The crank 1 is located at the end of the second arm 22 away from the first arm 21, and the sliding cover 23 is slidably installed on the outside of the second arm 22 and can slide back and forth between the first position and the second position; When the sliding cover 23 is in the first position, the sliding cover 23 partially covers the first arm body 21 to restrict the second arm body 22 from rotating relative to the first arm body 21 so as to unfold the second arm body 22; when the sliding cover 23 is in the second position, the sliding cover 23 disengages from the first arm body 21 so as to allow the second arm body 22 to rotate relative to the first arm body 21 so as to fold the second arm body 22.

[0024] The crank handle 1 assembly of this application has a sliding cover 23 slidably mounted on the outside of the second arm 22. When the sliding cover 23 is in the first position, it covers the outside of the first arm 21 and the second arm 22, and forms a circumferential limit on the first arm 21 and the second arm 22, preventing the second arm 22 from rotating relative to the first arm 21, thus enabling the second arm 22 and the first arm 21 to unfold in the same direction. When the sliding cover 23 is in the second position, it only covers the outside of the second arm 22, and the second arm 22 can rotate relative to the first arm 21, thus realizing the folding action of the second arm 22.

[0025] When the second arm 22 is in the extended state, the combination of the first arm 21 and the second arm 22 meets the labor-saving requirements for grinding coffee. When the second arm 22 is in the folded state, it saves the space occupied by the crank 1 assembly, making it easy to store and thus reducing transportation and packaging costs. At the same time, it helps to prevent the grinder from tilting, greatly improving the safety of using the grinder.

[0026] It is understood that the first arm 21 and the second arm 22 can be hinged together via a vertically extending hinge axis, allowing the second arm 22 to rotate vertically and fold; alternatively, they can be hinged together via a horizontally extending hinge axis, allowing the second arm 22 to fold downwards. Further, see 2 and... Figure 4 The first arm 21 and the second arm 22 are hinged together by a first hinge shaft 31 extending laterally, so that the second arm 22 can be folded downwards. This reduces the space occupied by the crank handle 1 assembly and lowers the overall center of gravity of the crank handle 1 assembly, making it easier to prevent the grinder from tipping over.

[0027] Furthermore, see Figures 1 to 4 The crank handle 1 is hinged to the second arm 22 via a second hinge shaft 32. The second hinge shaft 32 is parallel to the extending direction of the first hinge shaft 31, ensuring that the crank handle 1 can rotate around the second hinge shaft 32 so that the center line of the crank handle 1 is perpendicular or parallel to the length direction of the second arm 22. When the second arm 22 is in the unfolded state, the crank handle 1 is rotated to a position perpendicular to the second arm 22, making it easier for the user to hold the crank handle 1 for grinding. When the second arm 22 is in the folded state, the crank handle 1 can be rotated to a position parallel to the second arm 22, which allows for better storage of the crank handle 1 and further reduces the space occupied by the crank handle 1 assembly.

[0028] In some embodiments, the first arm 21 and / or the second arm 22 are provided with a limiting structure. When the sliding cover 23 is in the first position and the second position, the limiting structure is used to restrict the sliding cover 23 from sliding along the second arm 22 to ensure the stability of the installation of the sliding cover 23.

[0029] Further, see Figure 2 and Figure 4 A first elastic telescopic component 41 is provided between the sliding cover 23 and the second arm 22, and the first elastic telescopic component 41 is arranged along the extension direction of the second arm 22. When the sliding cover 23 is in the second position, the first elastic telescopic component 41 is in a compressed state and is locked by the limiting structure; when the second arm 22 rotates from the folded state to a state parallel to the first arm 21, the sliding cover 23 can slide to the first position under the action of the first elastic telescopic component 41 and be locked by the limiting structure. By setting the first elastic telescopic component 41, the sliding cover 23 can be switched between different positions, and at the same time, it can cooperate with the limiting structure to improve the stability of the sliding cover 23 when installed in different positions.

[0030] Further, see Figure 2 and Figure 4 The second arm 22 has a first mounting groove 51 at one end near the first arm 21, and the inner side of the sliding cover 23 has an abutment post 231 that extends into the first mounting groove 51. The first elastic telescopic component 41 is installed in the first mounting groove 51 and is located on the side of the abutment post 231 away from the first arm 21, thereby realizing the elastic connection between the sliding cover 23 and the second arm 22.

[0031] See Figures 2 to 4 In some embodiments, the first arm 21 is provided with a docking groove 211 at one end near the second arm 22. When the sliding cover 23 is in the first position, the sliding cover 23 extends into the docking groove 211 and abuts against the first arm 21, ensuring a closer fit between the sliding cover 23 and the first arm 21 and improving the user experience.

[0032] Further, see Figures 2 to 5 The limiting structure includes a first limiting post 61 and a second elastic telescopic component. The first arm 21 has a second mounting groove 52 below the docking groove 211, and the second mounting groove 52 communicates with the docking groove 211. The sliding cover 23 has a limiting groove 232 at a position corresponding to the docking groove 211. The first limiting post 61 is installed in the second mounting groove 52, and the second elastic telescopic component abuts between the first limiting post 61 and the second mounting groove 52 to drive the first limiting post 61 to extend out of the second mounting groove 52 and extend into the limiting groove 232 when the sliding cover 23 is in the first position, thereby restricting the movement of the sliding cover 23 and ensuring the stability of the crank handle 1 assembly in the unfolded state.

[0033] When the sliding cover 23 is in the second position, it abuts against the bottom of the first arm 21. The first arm 21 and the first elastic telescopic component 41 together constitute a limiting structure that restricts the sliding of the sliding cover 23.

[0034] Furthermore, see Figure 3 and Figure 5 The crank assembly also includes a second limiting post 62 and a third elastic telescopic component. The first arm 21 has a protruding structure 212 at the position where it is hinged to the second arm 22, and a third mounting groove is provided on both sides of the protruding structure 212. The second limiting post 62 is installed in the third mounting groove, and the third elastic telescopic component abuts between the second limiting post 62 and the third mounting groove to drive the second limiting post 62 to extend out of the third mounting groove and onto both sides of the second arm 22, ensuring that the second arm 22 can maintain a stable connection with the first arm 21 when it is in a folded or unfolded state.

[0035] When the second arm 22 needs to be changed from the folded state to the unfolded state, simply pull down the sliding cover 23 to rotate the second arm 22 to a state parallel to the first arm 21. The sliding cover 23 can then slide under the action of the first elastic telescopic component 41 and switch to the second position. The first limiting post 61 can then engage with the sliding cover 23 to achieve the limiting.

[0036] This application also provides a coffee grinder, including a crank assembly, which has been described in detail above and will not be repeated here.

[0037] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this application, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A crank assembly, characterized in that, include: Crank handle; A rocker arm includes a first arm body, a second arm body, and a sliding cover extending in the same direction. One end of the first arm body is provided with a pivot connection part, and the other end of the first arm body is hinged to the second arm body. The rocker handle is provided at the end of the second arm body away from the first arm body. The sliding cover is slidably installed on the outside of the second arm body and can slide back and forth between a first position and a second position. When the sliding cover is in the first position, the sliding cover partially covers the first arm body to restrict the second arm body from rotating relative to the first arm body, so as to unfold the second arm body; when the sliding cover is in the second position, the sliding cover disengages from the first arm body so that the second arm body can rotate relative to the first arm body, so as to fold the second arm body.

2. The crank assembly according to claim 1, characterized in that, The first arm and the second arm are hinged together by a first hinge axis extending laterally, so that the second arm can be folded downward.

3. The crank assembly according to claim 2, characterized in that, The crank handle is hinged to the second arm via a second hinge shaft, and the second hinge shaft is parallel to the extending direction of the first hinge shaft.

4. The crank assembly according to claim 1, characterized in that, The first arm and / or the second arm are provided with a limiting structure. When the sliding cover is in the first position and the second position, the limiting structure is used to restrict the sliding cover from sliding along the second arm.

5. The crank assembly according to claim 4, characterized in that, A first elastic telescopic component is provided between the sliding cover and the second arm body, and the first elastic telescopic component is arranged along the extension direction of the second arm body.

6. The crank assembly according to claim 5, characterized in that, The second arm body has a first mounting groove at one end near the first arm body, and the inner side of the sliding cover has an abutment post that extends into the first mounting groove. The first elastic telescopic component is installed in the first mounting groove and is located on the side of the abutment post away from the first arm body.

7. The crank assembly according to any one of claims 4 to 6, characterized in that, The first arm body has a docking groove at one end near the second arm body. When the sliding cover is in the first position, the sliding cover extends into the docking groove and abuts against the first arm body.

8. The crank assembly according to claim 7, characterized in that, The limiting structure includes a first limiting post and a second elastic telescopic component. The first arm body is provided with a second mounting groove below the docking groove. The second mounting groove communicates with the docking groove. The sliding cover is provided with a limiting groove at a position corresponding to the docking groove. The first limiting post is installed in the second mounting groove. The second elastic telescopic component abuts between the first limiting post and the second mounting groove to drive the first limiting post to extend out of the second mounting groove and extend into the limiting groove when the sliding cover is in the first position.

9. The crank assembly according to any one of claims 4 to 6, characterized in that, It also includes a second limiting post and a third elastic telescopic component. The first arm body has a protrusion structure at the position where it is hinged to the second arm body, and a third mounting groove is provided on both sides of the protrusion structure. The second limiting post is installed in the third mounting groove, and the third elastic telescopic component abuts between the second limiting post and the third mounting groove to drive the second limiting post to extend out of the third mounting groove and abut against both sides of the second arm body.

10. A coffee grinder, characterized in that, Includes the crank assembly as described in any one of claims 1 to 9.

Images