Hand-operated coffee machine with cover body limiting device

Abstract

The utility model provides a hand-operated coffee machine provided with a cover body limiting device, and aims to solve the problem that in the prior art, an axial limiting structure is not arranged between a cover body and a machine body or a rotating shaft on the hand-operated coffee machine, so that the cover body is easily separated from the machine body or the rotating shaft in the axial direction of the rotating shaft, and the synchronous rotating matching effect with the rotating shaft is lost. A hand-operated coffee machine with a cover limiting device comprises a machine body, a rotating shaft is rotationally arranged in the machine body, a grinding assembly is arranged between the rotating shaft and the machine body, and an opening is formed in the upper end of the machine body; the cover body covers the opening of the machine body and is synchronously and rotationally connected with the rotating shaft; a rocking handle is arranged on the cover body; the limiting device is arranged between the cover body and the machine body; or the rotating shaft is arranged between the cover body and the rotating shaft. By arranging the limiting device, the cover body is prevented from being separated from the machine body and the rotating shaft in the axial direction of the rotating shaft in the using process.

Description

Technical Field

[0001] This utility model belongs to the field of coffee making equipment technology, specifically relating to a hand-cranked coffee machine with a lid limiting device. Background Technology

[0002] Coffee is a beverage made by brewing roasted and ground coffee beans. As one of the world's three major beverages, it, along with cocoa and tea, is a popular drink worldwide. Before brewing coffee, the coffee beans need to be ground into coffee powder, making it easier to brew a rich and flavorful coffee. Currently, there is a hand-cranked coffee grinder. This type of machine typically includes a body, a rotating shaft within the body, and inner and outer grinding blades located between the shaft and the body. To facilitate the rotation of the shaft, a cover connected to the shaft and a crank on the cover are located at the upper part of the body. In use, the crank is rotated around the body, causing the cover and shaft to rotate relative to the body. This, in turn, causes the inner grinding blades to rotate relative to the outer grinding blades, grinding the coffee beans into coffee powder. In existing technologies, the cover is directly fitted onto the upper end of the rotating shaft, and the two achieve synchronous rotation through a non-circular structure. Since there is no axial limiting structure between the cover and the machine body or rotating shaft, the cover is prone to detach from the machine body or rotating shaft along the axial direction of the rotating shaft, thus losing its synchronous rotational cooperation with the rotating shaft. Therefore, further improvements are needed. Utility Model Content

[0003] This utility model provides a hand-cranked coffee machine with a lid limiting device, which aims to solve the problem that the lid of the existing hand-cranked coffee machine does not have an axial limiting structure between the lid and the machine body or the rotating shaft, causing the lid to easily detach from the machine body or the rotating shaft along the axial direction of the rotating shaft, thereby losing the synchronous rotation and cooperation with the rotating shaft.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A hand-cranked coffee machine equipped with a lid limiting device includes:

[0006] The machine body has a rotating shaft rotatably mounted inside it. A grinding assembly is provided between the rotating shaft and the machine body. The grinding assembly includes an outer grinding blade mounted inside the machine body and an inner grinding blade mounted on the rotating shaft and rotatable relative to the outer grinding blade. An opening is provided at the upper end of the machine body.

[0007] A cover, which covers the opening on the machine body and is rotatably connected to the rotating shaft; the cover is provided with a crank handle; and...

[0008] A limiting device is disposed between the cover and the body; or, disposed between the cover and the rotating shaft; the limiting device is used to restrict the cover from detaching from the body along the axial direction of the rotating shaft.

[0009] A further embodiment: the cover is provided with a sleeve groove fitted onto the rotating shaft; the limiting device is disposed between the cover and the rotating shaft.

[0010] A further embodiment: The limiting device includes a sliding groove on the cover, a positioning pin slidably disposed in the sliding groove in a direction perpendicular to the axis of the rotating shaft, an elastic element disposed between the positioning pin and the bottom wall of the sliding groove, and a positioning groove on the rotating shaft; the opening of the sliding groove is located in the sleeve groove.

[0011] When the elastic element is in action, the positioning pin slides toward the positioning groove and, by cooperating with the positioning groove, restricts the cover from disengaging from the machine body along the axial direction of the rotating shaft; when the cover moves relative to the machine body along the axial direction of the rotating shaft, the positioning pin slides away from the positioning groove and compresses the elastic element.

[0012] Based on the above technical solution: the positioning pin slides toward the positioning groove under the action of the elastic element, thereby cooperating with the positioning groove to restrict the cover from detaching from the machine body along the axis of the rotating shaft, which facilitates the user's operation of assembling the cover onto the machine body. At the same time, when removing the cover, by moving the cover relative to the machine body along the axis of the rotating shaft, the positioning pin slides away from the positioning groove, which facilitates the user to quickly remove the cover.

[0013] A further embodiment: The limiting device includes two sliding grooves on opposite sides of the rotating shaft, two positioning pins that are slidably disposed in the two sliding grooves in a direction perpendicular to the axis of the rotating shaft, an elastic element disposed between the two positioning pins, and two positioning grooves on opposite sides of the inner wall of the sleeve groove.

[0014] When the elastic element is in action, the two positioning pins slide toward the two positioning grooves respectively and restrict the cover from disengaging from the machine body along the axis of rotation by cooperating with the positioning grooves; when the cover moves relative to the machine body along the axis of rotation, the two positioning pins slide away from the two positioning grooves respectively and compress the elastic element.

[0015] A further option is that the locating pin is a ball bearing; or, the end face of the locating pin that mates with the locating groove is spherical.

[0016] Based on the above technical solution: the above setting facilitates the smooth disengagement of the positioning pin from the positioning groove when the user moves the cover relative to the machine body along the axis of the rotating shaft, thereby making it convenient for the user to quickly disassemble and assemble the cover.

[0017] A further embodiment: the cover is elastic, and the sleeve groove is fitted onto the rotating shaft in an interference fit manner.

[0018] Based on the above technical solution, the above-mentioned structure is more simplified, making it easier for users to quickly assemble and disassemble the cover.

[0019] A further embodiment: the cover is provided with a collar and the cover is rotatably connected to the collar, and the limiting device is disposed between the collar and the machine body.

[0020] A further embodiment: The limiting device includes a limiting block disposed on the circumference of the collar and a limiting groove disposed around the inner sidewall of the opening of the machine body. The upper top wall of the limiting groove is provided with a notch for the limiting block to enter the limiting groove. After the limiting block enters the limiting groove through the notch, the collar is rotated relative to the machine body to make the limiting block stuck in the limiting groove and restrict the cover from detaching from the machine body along the axial direction of the rotating shaft.

[0021] Based on the above technical solution: after the limiting block enters the limiting groove through the notch, the limiting block is locked in the limiting groove by rotating the collar relative to the machine body, thereby preventing the limiting block from axially detaching from the limiting groove from the notch, and thus preventing the cover from axially detaching from the machine body.

[0022] A further option: the limiting device is a thread provided between the collar and the opening of the machine body.

[0023] Based on the above technical solution, the connection method is simpler and easier for users to operate.

[0024] A further solution: the limiting device is disposed between the cover and the body;

[0025] The limiting device includes a knob on the cover, a latch below the knob, a storage groove below the cover, and an annular groove on the body. When the knob is rotated to allow the latch to enter the annular groove, the latch, in conjunction with the annular groove, restricts the cover from detaching from the body along the axis of rotation. When the knob is rotated to allow the latch to enter the storage groove, the cover can be moved relative to the body to detach from the body along the axis of rotation.

[0026] The beneficial effects of this utility model are as follows:

[0027] This invention uses a limiting device placed between the cover and the body, or between the cover and the rotating shaft, to restrict the cover from detaching from the body along the axial direction of the rotating shaft. This prevents the cover from detaching from the body or the rotating shaft, making the fit between the cover, the body, and the rotating shaft more stable. Consequently, when the user drives the cover and the rotating shaft to rotate relative to the body using the hand crank, the stability of the cover's rotation relative to the body is better, resulting in a better user experience. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the coffee machine in this utility model.

[0030] Figure 2 This is a cross-sectional structural diagram of the coffee machine in this utility model.

[0031] Figure 3 This is a schematic diagram of the structure of this utility model, in which the positioning pin is set on the cover and the positioning groove is set on the rotating shaft.

[0032] Figure 4 This is a schematic diagram of the structure of this utility model, in which the positioning pin is set on the rotating shaft and the positioning groove is set on the cover.

[0033] Figure 5 This is a schematic diagram of the structure of the cover body of this utility model, in which the sleeve groove is fitted onto the rotating shaft in an interference fit manner.

[0034] Figure 6 This is a schematic diagram of the structure of the limiting block on the collar and the limiting groove on the machine body in this utility model.

[0035] Figure 7 This is a schematic diagram of the threaded connection between the collar and the machine body in this utility model.

[0036] Figure 8 This is a schematic diagram of the structure of the knob and locking tongue on the collar of this utility model cooperating with the annular groove on the body.

[0037] Explanation of the labels in the diagram:

[0038] 1-Main body; 11-Outer grinding blade; 12-Annular groove; 13-Limiting groove; 131-Gutter notch; 2-Handle; 3-Rotating shaft; 31-Inner grinding blade; 32-Locking component; 4-Cover; 41-Ring; 411-Limiting block; 42-Lock tongue; 43-Knob; 44-Storage groove; 45-Socket groove; 5-Positioning pin; 6-Positioning groove; 7-Slide groove; 8-Elastic component. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0040] like Figures 1 to 8 As shown, this embodiment provides a hand-cranked coffee machine with a lid 4 limiting device, including:

[0041] The machine body 1 has a rotating shaft 3 rotatably mounted inside it. A grinding assembly is provided between the rotating shaft 3 and the machine body 1. The grinding assembly includes an outer grinding blade 11 disposed inside the machine body 1 and an inner grinding blade 31 disposed on the rotating shaft 3 and rotatable relative to the outer grinding blade 11. An opening is provided at the upper end of the machine body 1.

[0042] A cover 4 is provided on the opening of the machine body 1 and is synchronously connected to the rotating shaft 3; a handle 2 is provided on the cover 4; specifically, the cover 4 covers the inner side of the opening on the machine body 1; and...

[0043] A limiting device is provided between the cover 4 and the body 1; or, between the cover 4 and the rotating shaft 3; the limiting device is used to restrict the cover 4 from detaching from the body 1 along the axial direction of the rotating shaft 3.

[0044] In this embodiment, as Figure 5 As shown, the cover 4 has a sleeve groove 45 fitted onto the rotating shaft 3. A locking element 32 is fixedly installed on the rotating shaft 3 to restrict its axial movement relative to the machine body 1. The cover 4 can be configured to connect with the rotating shaft 3 via a non-circular fit, thereby achieving synchronous rotation. The crank handle 2 can be directly inserted into the cover 4.

[0045] In this embodiment, the limiting device can be specifically disposed between the cover 4 and the rotating shaft 3.

[0046] As a specific implementation method, such as Figure 3 As shown, the limiting device includes a sliding groove 7 disposed on the cover 4, a positioning pin 5 slidably disposed in the sliding groove 7 in a direction perpendicular to the axis of the rotating shaft 3, an elastic member 8 disposed between the positioning pin 5 and the bottom wall of the sliding groove 7, and a positioning groove 6 disposed on the rotating shaft 3; the opening of the sliding groove 7 is located in the sleeve groove 45; and the diameter of the opening of the sliding groove 7 is smaller than the diameter of the positioning pin 5 at its maximum point, thereby preventing the positioning pin 5 from sliding out of the sliding groove 7;

[0047] When the elastic element 8 is in action, the positioning pin 5 slides toward the positioning groove 6 and, by engaging with the positioning groove 6, restricts the cover 4 from detaching from the body 1 along the axial direction of the rotating shaft 3. When the cover 4 moves relative to the body 1 along the axial direction of the rotating shaft 3, the positioning pin 5 slides away from the positioning groove 6 and compresses the elastic element 8. In this design, the cover 4 can be removed from the body 1 by pulling it in the opposite direction relative to the body 1.

[0048] The aforementioned limiting device can be provided in two sets, and is located on opposite sides of the inner wall of the socket groove 45, thereby improving stability during mating.

[0049] As a specific implementation method, such as Figure 4 As shown, the limiting device includes two sliding grooves 7 on opposite sides of the rotating shaft 3, two positioning pins 5 that are slidably disposed in the two sliding grooves 7 in a direction perpendicular to the axis of the rotating shaft 3, an elastic element 8 disposed between the two positioning pins 5, and two positioning grooves 6 on opposite sides of the inner wall of the sleeve groove 45.

[0050] When the elastic element 8 is in action, the two positioning pins 5 slide toward the two positioning grooves 6 respectively and cooperate with the positioning grooves 6 to restrict the cover 4 from disengaging from the body 1 along the axis of the rotating shaft 3; when the cover 4 moves relative to the body 1 along the axis of the rotating shaft 3, the two positioning pins 5 slide away from the two positioning grooves 6 respectively and compress the elastic element 8.

[0051] In this design, when the elastic element 8 is a spring, the two sliding grooves 7 can be connected. The elastic element 8 can also be a V-shaped spring sheet, with two locating pins 5 respectively positioned on opposite sides of the V-shaped spring sheet.

[0052] In order to facilitate the disassembly and assembly of the cover 4 and to allow the positioning pin 5 to smoothly enter or leave the positioning groove 6, the positioning pin 5 can be set as a ball; or, the end face of the positioning pin 5 that mates with the positioning groove 6 can be set as a ball.

[0053] In some specific implementation methods, such as Figure 5 As shown, the cover 4 is configured to have a certain degree of elasticity, and the sleeve groove 45 is fitted onto the rotating shaft 3 in an interference fit manner. When the sleeve groove 45 is fitted onto the rotating shaft 3, the sleeve groove 45 undergoes slight deformation and expands, thereby tightly fitting onto the rotating shaft 3. The friction between the inner sidewall of the sleeve groove 45 and the rotating shaft 3 is relatively large, thereby restricting the cover 4 from detaching from the machine body 1 along the axial direction of the rotating shaft 3.

[0054] In some specific implementation methods, such as Figure 6As shown, the cover 4 is provided with a collar 41, and the cover 4 is rotatably connected to the collar 41. The limiting device is disposed between the collar 41 and the machine body 1. Specifically, the rotatable connection between the cover 4 and the collar 41 can be configured as a slider engaging with an annular guide groove. The slider and the annular guide groove are respectively disposed on the collar 41 and the cover 4, and the structure of the slider and the annular guide groove is designed such that the slider cannot detach from the annular guide groove axially, thereby allowing the collar 41 and the cover 4 to be simultaneously mounted and dismounted onto the machine body 1. The collar 41 specifically comprises an annular upper top wall with a through hole in the middle and an annular side wall extending downward around the edge of the annular upper top wall.

[0055] In one specific implementation, such as Figure 6 As shown, the limiting device includes a limiting block 411 disposed circumferentially on the collar 41 and a limiting groove 13 surrounding the inner sidewall of the opening of the body 1. The upper top wall of the limiting groove 13 is provided with a notch 131 for the limiting block 411 to enter the limiting groove 13. After the limiting block 411 enters the limiting groove 13 through the notch 131, the collar 41 is rotated relative to the body 1 to make the limiting block 411 lock in the limiting groove 13 and prevent the cover 4 from detaching from the body 1 along the axial direction of the rotating shaft 3. Several limiting blocks 411, notches 131, and limiting grooves 13 can be provided, and they correspond one-to-one.

[0056] In one specific implementation, such as Figure 7 As shown, the limiting device is a threaded connection between the collar 41 and the opening of the body 1. Specifically, the collar 41 has an external thread, the opening of the body 1 has an internal thread, the collar 41 is threadedly connected to the body 1, and the cover 4 is rotatably connected to the collar 41. Therefore, the cover 4 can continue to drive the rotating shaft 3 to rotate relative to the body 1 under the action of the crank 2.

[0057] In some specific implementation methods, such as Figure 8 As shown, the limiting device is disposed between the cover 4 and the body 1;

[0058] Specifically, the limiting device includes a knob 43 on the cover 4, a latch 42 below the knob 43, a storage groove 44 below the cover 4, and an annular groove 12 on the body 1. When the knob 43 is rotated to allow the latch 42 to enter the annular groove 12, the latch 42, by cooperating with the annular groove 12, restricts the cover 4 from detaching from the body 1 along the axis of the rotating shaft 3. Specifically, the latch 42 abuts against the upper top wall of the annular groove 12 and can rotate along the annular groove 12 with the cover 4. When the knob 43 is rotated to allow the latch 42 to enter the storage groove 44, the cover 4 can be moved relative to the body 1 to detach from the body 1 along the axis of the rotating shaft 3.

[0059] Working principle explanation:

[0060] When in use, the user drives the crank 2 to rotate relative to the machine body 1, which causes the crank 2 to drive the cover 4 and the rotating shaft 3 to rotate, thereby causing the inner grinding blade 31 on the rotating shaft 3 to rotate relative to the outer grinding blade 11, grinding the coffee beans into coffee powder. During this process, the limiting device prevents the cover 4 from detaching from the machine body 1 along the axial direction of the rotating shaft 3, thereby making the connection or cooperation between the cover 4 and the machine body 1 and the rotating shaft 3 more stable.

[0061] This utility model is not limited to the above-mentioned optional embodiments. Under the premise of non-contradiction, the various solutions can be combined arbitrarily. Anyone can derive other forms of products under the guidance of this utility model. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope of the claims of this utility model are within the protection scope of this utility model.

Claims

1. A hand-operated coffee maker provided with a lid positioner, characterized in that, The utility model relates to a grinder, including: A machine body, a rotating shaft is arranged in the machine body, and a grinding assembly is arranged between the rotating shaft and the machine body, the grinding assembly comprises an outer grinding knife arranged in the machine body and an inner grinding knife arranged on the rotating shaft and rotatable relative to the outer grinding knife; an opening is arranged on the upper end of the machine body; A cover body is arranged on the opening of the machine body and is connected with the rotating shaft in a synchronous rotating mode; a handle is arranged on the cover body; and A limiting device is arranged between the cover body and the machine body or between the cover body and the rotating shaft, and the limiting device is used for limiting the cover body from being separated from the machine body along the axial direction of the rotating shaft.

2. A hand coffee maker provided with a lid limiting device according to claim 1, characterized in that, The cover body is provided with a sleeve groove arranged on the rotating shaft; and the limiting device is arranged between the cover body and the rotating shaft.

3. A hand coffee maker provided with a lid limiting device according to claim 2, characterized in that, The limiting device comprises a sliding groove arranged on the cover body, a positioning pin arranged in the sliding groove and sliding in a direction perpendicular to the axis of the rotating shaft, an elastic member arranged between the positioning pin and the bottom wall of the sliding groove, and a positioning groove arranged on the rotating shaft; the opening of the sliding groove is arranged in the sleeve groove; When the elastic member is in action, the positioning pin slides towards the positioning groove and is limited from being separated from the machine body along the axial direction of the rotating shaft by cooperation with the positioning groove; when the cover body is moved relative to the machine body along the axial direction of the rotating shaft, the positioning pin slides out of the positioning groove and compresses the elastic member.

4. A hand coffee maker provided with a lid limiting device according to claim 2, characterized in that, The limiting device comprises two sliding grooves arranged on opposite sides of the rotating shaft, two positioning pins arranged in the two sliding grooves respectively and sliding in a direction perpendicular to the axis of the rotating shaft, an elastic member arranged between the two positioning pins, and two positioning grooves arranged on opposite sides of the inner wall of the sleeve groove; When the elastic member is in action, the two positioning pins slide towards the two positioning grooves respectively and are limited from being separated from the machine body along the axial direction of the rotating shaft by cooperation with the positioning grooves; when the cover body is moved relative to the machine body along the axial direction of the rotating shaft, the two positioning pins slide out of the two positioning grooves respectively and compress the elastic member.

5. A hand coffee maker provided with a lid limiting device according to claim 3 or 4, characterized in that, The positioning pin is a ball; or the end surface of the positioning pin and the positioning groove is spherical.

6. A hand coffee maker provided with a lid limiting device according to claim 2, characterized in that, The cover body is elastic, and the sleeve groove is arranged on the rotating shaft in an interference fit mode.

7. A hand coffee maker provided with a lid limiting device according to claim 1, characterized in that, The cover body is provided with a sleeve ring and is connected with the sleeve ring in a rotating mode, and the limiting device is arranged between the sleeve ring and the machine body.

8. A hand coffee maker provided with a lid limiting device according to claim 7, characterized in that, The limiting device comprises a limiting block arranged in the circumferential direction of the sleeve ring and a limiting groove arranged around the inner wall of the opening of the machine body, and a groove gap is arranged on the upper top wall of the limiting groove and used for the limiting block to enter the limiting groove; after the limiting block enters the limiting groove through the groove gap, the sleeve ring is rotated relative to the machine body to make the limiting block clamped in the limiting groove and limit the cover body from being separated from the machine body along the axial direction of the rotating shaft.

9. A hand coffee maker provided with a lid limiting device according to claim 7, characterized in that, The limiting device is a screw thread arranged between the sleeve ring and the opening of the machine body.

10. The hand coffee maker with lid positioner of claim 1, wherein, The limiting device is arranged between the cover body and the machine body. The limiting device comprises a knob arranged on the cover, a lock tongue arranged on the lower side of the knob, a receiving groove arranged on the lower side of the cover, and an annular groove arranged on the machine body; when the knob is rotated to make the lock tongue enter the annular groove, the lock tongue is limited from separating from the machine body along the axial direction of the rotating shaft by cooperating with the annular groove; when the knob is rotated to make the lock tongue enter the receiving groove, the cover can be separated from the machine body along the axial direction of the rotating shaft by moving relative to the machine body.

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