closure device
By designing the ramp locking protrusion and elastic deformation area of the cylindrical insert and receiver, the problems of high production cost and complex operation of fasteners are solved, achieving economical and efficient closure and opening, and simplifying the operation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BB COFFEE CO LTD
- Filing Date
- 2026-02-09
- Publication Date
- 2026-07-03
Smart Images
Figure CN122328441A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a closing device, and more particularly to a detachable mechanical connection between two cylindrical components that can be connected by interlocking and rotating, and can be disconnected again, as detailed in the preamble of claim 1. Background Technology
[0002] Such fasteners are known in the prior art; for example, so-called bayonet fasteners. Summary of the Invention
[0003] The object of the present invention is to provide a closing device as described above, which can be manufactured in a cost-effective manner, is easy to operate, and can be transferred to the open position in a non-destructive manner.
[0004] This objective is achieved through the features of claim 1. Other embodiments and advantages are apparent, as detailed in the appended claims.
[0005] Therefore, the present invention proposes a closing device comprising a cylindrical receiving member having a cylindrical axis and a cylindrical insert coaxial with the receiving member, wherein the insert is insertable into the receiving member and can be moved to a closed position within the receiving member by rotating about the cylindrical axis.
[0006] Before reaching the closed position, at least two opposing, circumferentially ramped locking protrusions on the insert abut against the circumferentially ramped locking protrusions on the receiver (viewed circumferentially). During further rotation to the closed position, the locking protrusions of the receiver can exert a radially inward force on the locking protrusions of the insert.
[0007] According to the present invention, the design of the insert allows the force acting on the locking protrusion to push the locking protrusion radially inward, thereby causing an elliptical deformation at the end of the insert facing the receiver. This allows the locking protrusion of the receiver to pass over the locking protrusion of the insert, ultimately achieving a stable closed position. Applying a force and rotating the insert in the opposite direction converts the closed position to the open position. In the closed position, because the locking protrusion of the insert and the receiver abut against each other in the circumferential direction, the receiver maintains its original cylindrical shape, and therefore the locking protrusion of the insert is not subjected to radially inward force.
[0008] Therefore, the insert is designed to deform in a roughly elliptical shape when subjected to radially inward forces on the locking protrusions, with the minor axis of the ellipse connecting the two locking protrusions.
[0009] The receiver and insert can be made of metal and / or plastic. According to one embodiment, the locking protrusion of the receiver is designed such that, when viewed circumferentially in the closed position, the slope shape of the side facing the locking protrusion of the insert is steeper than the slope shape of the side facing away from the locking protrusion of the insert. This effectively ensures that the force required to open the closing device is greater than the force required to move the closing device to the closed position.
[0010] The receiving component can be designed, for example, as the body of a grinder, while the insert can be designed as a container for holding the material to be ground in a manual household grinder (especially a manual coffee grinder or a manual salt, pepper, grain, rice, or spice grinder). Alternatively, the receiving component can be integrated or integrally integrated into, for example, the grinder body, while the insert can be integrated or integrally integrated into the material container of a manual household grinder, especially a manual coffee grinder or a manual salt, pepper, grain, rice, or spice grinder. Furthermore, the insert can be a container, and the receiving component can be the lid of that container.
[0011] According to a particularly advantageous embodiment of the invention, the receiving member has two partially annular protrusions of opposite diameters, spaced apart, which extend radially inward, and in the connected state with the insert, each protrusion has a circumferentially sloping locking protrusion on the side facing away from the insert.
[0012] In addition, the side of the insert, at the end facing the receiver in its connected state, has two radially elastic deformation regions with opposite diameters, the thickness of which is less than that of the other sides, and two locking protrusions with opposite diameters. These locking protrusions are designed to be sloping in the circumferential direction and offset by 90° in the circumferential direction relative to the center of the elastic deformation region.
[0013] By setting a thin, elastic deformation zone and applying a radially inward force to the locking protrusion, the insert can be elliptical in shape. Furthermore, after completing the rotational motion to transfer the closing device to the closed position, the insert can return to its original cylindrical shape.
[0014] In addition, each elastically deformable region is followed by a thinner region that extends below the locking protrusion in the form of a partially annular threaded groove and has a certain pitch so as to form a threaded connection with the radially inwardly extending protrusion of the receiving part.
[0015] The insert can be inserted into the receiver and moved to the closed position by rotating it about the cylindrical axis. During this process, viewed from the circumferential direction, the locking protrusions of the insert always abut against the locking protrusions of the receiver before reaching the closed position.
[0016] During further rotation, the locking protrusion of the insert slides on the locking protrusion of the receiver, thereby generating a radial force on the locking protrusion of the insert. This radial force causes the radial elastic deformation area of the insert to be radially compressed outward, resulting in an elliptical deformation at the end of the insert facing the receiver. The locking protrusion of the receiver is then crossed by the locking protrusion of the insert, thus achieving a stable closed position. By applying force and rotating the insert in the opposite direction, this closed position can be converted to an open position.
[0017] Especially when the receiving part is designed as the grinder body and the insert is designed as the material container for a household hand grinder, or both are integrated into the grinder body or the receiving part and the insert, a groove for accommodating material can be provided at the end of the partially annular threaded groove of the insert. Therefore, during rotational motion, grinding material that might affect the closing function will be collected into the groove, thus realizing its advantages. Attached Figure Description
[0018] The invention will now be described in more detail with reference to the accompanying drawings, which illustrate preferred embodiments. The same component reference numerals denote the same parts, wherein: Figure 1 A schematic perspective view of the insert according to a first embodiment of the present invention is shown; Figure 2 show Figure 1 Another perspective view of the insert shown; Figure 3 This is a schematic 3D diagram showing the relationship between... Figure 1 and Figure 2 Another insert, different from the one shown, has a groove for receiving abrasive material; Figure 4 A schematic perspective view of a receiver according to an embodiment of the present invention is shown; and Figure 5 show Figure 1 , Figure 2 and Figure 3 A schematic perspective view of the insert is shown to illustrate the elliptical deformation during rotation. Detailed Implementation
[0019] Figure 1 An insert 1 designed according to the present invention is shown. For example... Figure 1 As shown, when the insert 1 is connected to the receiver, it has two radially elastic deformation regions 2 with opposite diameters, the thickness of which is less than that of the other sides; and two locking projections 3 with opposite diameters, which are ramp-shaped in the circumferential direction and are offset by approximately 90° in the circumferential direction relative to the center of the elastic deformation region 2.
[0020] Especially Figure 2 As shown, each elastic deformation region 2 is followed by a thinner region that extends below the locking protrusion 3 in the form of a partially annular threaded groove 4 with a certain pitch.
[0021] Figure 3 The insert embodiment shown is similar to Figure 1 and Figure 2 The illustrated embodiment is identical, except that each part of the insert has a pocket 5 at the end of its annular threaded groove 4. This design is particularly advantageous if the receiver is designed as the grinder body and the insert as the material container for a manual household grinder, or if both are integrated into their respective components. This is because, during rotational motion, any grinding material that might affect the closing function will be collected in the pocket 5.
[0022] Figure 4 Showing with Figure 1 , Figure 2 and Figure 3 The receiver 6 corresponds to the insert in the example. Here, the receiver 6 has two radially inwardly extending, oppositely sized, partially annular protrusions 7 at its ends, with a certain distance between them. When connected to the insert, the ends of the protrusions 7 are at a small distance from the ends of the receiver 6 facing the insert. On the side of the protrusion 7 facing away from the insert, a locking protrusion 8 is provided, designed as a ramp along the circumferential direction. In the example shown, the receiver 6 is integrated into the grinder body of a manual home grinder (e.g., a coffee grinder).
[0023] According to the present invention, such as Figure 1 , Figure 2 and Figure 3 The groove 4 shown is Figure 4 The radially inwardly extending protrusions 7 of the receiver 6 shown interact to form a threaded connection in the closed position.
[0024] According to the present invention, the insert 1 can be inserted into the receiver 6 and rotated to a closed position about a common cylindrical axis. Before reaching the closed position, the locking protrusions 3 of the insert 1 always abut against the locking protrusions 8 of the receiver 6 when viewed from the circumferential direction. During further rotation, a radial force is generated acting on the locking protrusions 3 of the insert 1.
[0025] Therefore, the elastic deformation region 2 of the insert 1 is pressed radially outward, causing the end of the insert 1 facing the receiver 6 to undergo elliptical deformation. This allows the locking protrusion 8 of the receiver 6 to be passed over by the locking protrusion 3 of the insert 1, forming a stable closed position. Applying force and rotating the insert in the opposite direction can transfer the closed position to the open position. The elliptical deformation of the insert 1 is as follows: Figure 5 As shown.
[0026] According to the design concept of the present invention, a closing device that is low in production cost, easy to operate, and can be transferred to the open position in a non-destructive manner can be manufactured; moreover, since this function has been integrated into the insert, no additional components such as spring sheets are required.
[0027] Symbol Explanation 1 Insert 2. Radial elastic deformation region 3 Locking protrusions 4. Threaded groove 5 grooves 6. Received items 7. Protrusion 8 Locking protrusions
Claims
1. A closing device, characterized in that, include: A cylindrical receiving element (6) having a cylindrical axis; as well as A cylindrical insert (1) coaxial with the receiver (6) is inserted into the receiver (6) and rotated about the cylindrical axis to a closed position. Before reaching the closed position, at least two circumferentially sloping locking protrusions (3) on the insert abut against a circumferentially sloping locking protrusion (8) on the receiver (6). During further rotation, the locking protrusions (3) acting on the insert (1) are activated. The radial force of the insert (1) is such that the locking protrusion (3) is pressed radially inward due to the force acting on it, which causes the end of the insert (1) facing the receiver (6) to undergo elliptical deformation. The locking protrusion (8) of the receiver (6) is passed over by the locking protrusion (3) of the insert, thereby achieving a stable closed position. By applying force and rotating the insert (1) in the opposite direction, the closed position can be transferred to an open position.
2. The closing device as claimed in claim 1, characterized in that, When the locking protrusion (8) of the receiver (6) is in the closed position, when viewed in the circumferential direction, the slope shape of the side of the locking protrusion (3) facing the insert (1) is steeper than the slope shape of the side of the locking protrusion (3) facing away from the insert (1).
3. The closing device as claimed in claim 1 or 2, characterized in that, The receiver (6) and the insert (1) are made of metal and / or plastic.
4. The closing device as claimed in claim 1, 2 or 3, characterized in that, The receiver (6) has two protrusions (7) with opposite diameters. The two protrusions extend radially inward and have a certain distance between them. When connected to the insert (1), the distance between the end of the protrusion (7) and the end of the receiver (6) facing the insert (1) is small. On the side of the protrusion (7) facing away from the insert (1), a locking protrusion (8) is provided in a circumferentially inclined manner. Among them, the side of the insert (1), at the end facing the receiver (6) in the state of being connected with the receiver (6), has two radial elastic deformation regions (2) with opposite diameters and their thickness is less than the thickness of the other side, and two locking protrusions (3) with opposite diameters and sloped in the circumferential direction, the two locking protrusions (3) being approximately offset by 90° relative to the center of the radial elastic deformation region (2). Each of the radial elastic deformation regions (2) is followed by a region of less thickness, which is a partially annular threaded groove (4) with a certain pitch and extends below the locking protrusion (3) so as to form a threaded connection with the radially inwardly extending protrusion (7) of the receiving member (6). The insert (1) can be inserted into the receiver (6) and can be rotated to a closed position inside the cylinder axis. Before reaching the closed position, the locking protrusions (3) of the insert abut against the locking protrusions (8) of the receiver in the circumferential direction. During further rotation, a radial force is generated on the locking protrusions (3) of the insert (1). The radial force causes the radially elastic deformable areas (2) of the insert (1) to be radially squeezed outward, resulting in an elliptical deformation at the end of the insert (1) facing the receiver (6). The locking protrusions (8) of the receiver (3) are passed by the locking protrusions (3) of the insert (1), thereby achieving a stable closed position. By applying force and rotating the insert (1) in the opposite direction, the closed position can be transferred to the open position.
5. The closing device as claimed in claim 4, characterized in that, A groove (5) is provided at the end of the threaded groove (4) of the insert (1) in a partial annular shape.
6. The closing device as claimed in claim 1, 2, 3, 4 or 5, characterized in that, The receiving part (6) is the grinder body, and the insert (1) is a container for holding the material to be ground by a manual household grinder, especially a manual coffee grinder or a manual salt, pepper, grain or spice grinder; or the receiving part (6) is integrated or integrally integrated into the grinder body, and the insert (1) is integrated or integrally integrated into the container for holding the material to be ground by a manual household grinder, especially a manual coffee grinder or a manual salt, pepper, grain or spice grinder; or the insert is a container, and the receiving part is a lid of the container.