Hand rocker for bean grinder

Abstract

The utility model relates to the technical field of coffee bean grinders, in particular to a hand rocker for a bean grinder, which comprises a hand-cranking piece, a connecting column and a hand-cranking handle, the connecting column and the hand-cranking handle are mounted on the hand-cranking bean grinder, one end of the connecting column facing the hand-cranking piece is provided with a middle hole, and one side of the middle hole is provided with a folding opening in a chiseling manner. One end of the hand-cranking piece is provided with a connector which can be vertically folded along a folding opening, the hand-cranking piece further comprises a fixed sliding barrel which is connected outside the connector in a sleeving mode and can slide down along the connector, and the fixed sliding barrel comprises a fixed part which is located at the end facing the connecting column and is fixed to the connecting column; the connector at one end of the hand rocker is embedded in the middle hole of the connecting column, and the folding opening is formed in one side of the middle hole, so that the hand rocker can be vertically folded along the folding opening, and force can be conveniently applied during shaking; and the connector is sleeved with the fixed sliding cylinder, the fixed sliding cylinder can abut against the folding opening after being vertically bent, and the fixed protruding edge on the connecting column can be inserted into the fixed groove in the fixed part, so that falling off during use is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee bean grinders, in particular to a hand crank for a coffee bean grinder. Background Art

[0002] A hand-cranked coffee grinder is a manual device used to grind coffee beans. It drives the internal blade to cut and grind the coffee beans to obtain coffee powder by manually rotating the crank. The hand crank is an important component of the hand-cranked coffee grinder. It is directly connected to the drive mechanism of the coffee grinder. The hand crank is manually rotated to drive the internal blade to grind the coffee beans.

[0003] To optimize usage, some hand cranks are folded vertically in the middle, making them parallel to the user's torso, which helps the user to exert force and more effectively converts human power into rotational force. However, since the vertical hand crank takes up a lot of storage space, it affects the portability of the hand grinder.

[0004] There is a hand crank on the market, which is divided into two main parts: one is a connecting column that can be detachably installed on the main body of the grinder, and the other is a hand crank grip connected in parallel with the connecting column. The two parts are connected in a movable manner, so that the hand crank grip can be vertically folded left and right around the connecting column, which enhances the user's control convenience during the grinding process and is easy to store; but when using it, it is found that it is easy to slip at the folding position after exerting force, causing the hand crank to automatically reset or fold in the opposite direction during use, which greatly affects the user experience and needs to be improved urgently. Utility Model Content

[0005] In order to solve the problems of the prior art, the utility model provides a hand crank for a coffee bean grinder, aiming to solve the above problems.

[0006] The solution adopted by the utility model to solve its technical problems is: a hand crank for a coffee bean grinder, including a hand crank, a connecting column movably connected to the hand crank and installed on the hand crank coffee bean grinder, and a hand crank handle arranged on one end of the hand crank away from the connecting column, the connecting column is provided with a middle hole facing the end of the hand crank, a folding opening is chiseled on one side of the middle hole, one end of the hand crank is provided with a connecting head embedded in the middle hole for connecting with the connecting column and can be vertically folded along the folding opening, and also includes a fixed slide cylinder which is sleeved on the outside of the connecting head and can slide down along the connecting head, and the fixed slide cylinder includes a fixing part located toward one end of the connecting column and fixed to the connecting column.

[0007] By adopting the above technical scheme, a connecting head is provided at one end of the hand crank, and the connecting head is embedded in the middle hole of the connecting column, and a folding opening is opened on one side of the middle hole, so that the hand crank can be vertically folded along the folding opening, which is convenient for exerting force when shaking; and a fixed slide cylinder is connected to the outer sleeve of the connecting head, and after vertical bending, the fixed slide cylinder can abut against the folding opening and be fixed to the connecting column to prevent it from falling off during use.

[0008] Furthermore, the connecting column has a fixing ridge extending outwardly toward one side of the folding opening, and the fixing portion is provided with a fixing groove adapted to the fixing ridge.

[0009] By adopting the above technical solution, after the hand crank is bent perpendicular to the connecting column, the fixing groove on the fixing part of the fixed slide tube slides into the two fixing ridges located on one side of the folding mouth to stop and fix it, effectively preventing the hand crank from resetting.

[0010] Furthermore, the fixed slide cylinder also includes a main body portion facing away from one end of the connecting column, the outer diameter of the main body portion is smaller than the inner diameter of the middle hole, and the inner diameter of the middle hole is larger than the outer diameter of the fixed portion.

[0011] By adopting the above technical solution, the inner diameter of the middle hole is larger than the outer diameter of the fixing part, so that the fixing part can slide into the middle hole when not folded; and the outer diameter of the main body is smaller than the inner diameter of the middle hole, so that the main body can abut the connecting column to prevent the fixed slide from sliding into the middle hole as a whole.

[0012] Furthermore, a limiting protrusion is provided on the outer wall of one end of the hand-cranked part facing the connecting head, and a corresponding limiting groove is provided on the inner wall of the fixed slide, and the limiting protrusion is inserted into the limiting groove.

[0013] By adopting the above technical solution, the limiting protrusion is inserted into the limiting groove to prevent the rotatable fixed slide cylinder and prevent the fixed groove from being unable to fix the convex edge to it; and the bottom of the limiting groove abuts against the top of the limiting protrusion to prevent the fixed slide cylinder from sliding down, thereby achieving the limit.

[0014] Furthermore, a return spring is provided in the fixed slide cylinder, and the return spring is sleeved on the outside of the connecting head. A step surface is formed at the connection between the connecting head and the hand crank, and the return spring abuts against the step surface.

[0015] By adopting the above technical solution, a reset spring is arranged between the fixed slide and the connecting head. When folding, the fixed slide needs to be slid down to cancel the fixation of the connecting column. After folding, the fixed slide can be driven to rebound and reset by the reset spring.

[0016] Furthermore, a first through hole is provided in the middle hole at two adjacent sides of the folding opening, a second through hole is provided at a corresponding position of the connector, and a latch is also provided in the middle hole to penetrate through the first through hole and the second through hole to form a fixed structure.

[0017] By adopting the above technical solution, the connecting head is embedded in the middle hole and fixed by the pin that successively penetrates the first through hole and the second through hole, so that a rotating shaft structure is formed between the connecting column and the hand crank, and the hand crank can be folded along the folding opening.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The utility model provides a connector at one end of the hand crank and embeds it in the middle hole of the connecting column to form a rotating shaft structure, and chisels a folding opening on one side of the middle hole so that the hand crank can be vertically folded along the folding opening to facilitate shaking and exerting force.

[0020] 2. The utility model adds a fixed slide tube at one end of the connector, which is connected to the connector. The fixed slide tube includes a fixed part and a main body. A fixed ridge extends outward on one side of the folding opening of the connector column, and a fixed groove is provided on the fixed part. When not in use, the fixed part can be inserted into the middle hole to prevent the hand crank from folding; when folding is required, the fixed slide tube can be slid down and out of the middle hole, and after folding, the fixed groove can slide into the fixed ridge to stop and fix, effectively preventing the hand crank from resetting.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of this embodiment after folding;

[0023] Figure 2 This is a schematic diagram of the overall structure of the embodiment when it is not folded;

[0024] Figure 3 This is a schematic diagram of the structure of the hand crank of this embodiment;

[0025] Figure 4 This is a schematic diagram of the structure of the fixed slide in this embodiment;

[0026] Figure 5 It is a side view of the fixed slide cylinder of this embodiment;

[0027] Figure 6 Schematic diagram of the structure of the connecting column in this embodiment.

[0028] In the figure: 1. hand crank; 2. connecting column; 21 middle hole; 3. hand crank; 4. connecting head; 5. folding mouth; 6. fixed slide; 61. main body; 62. fixing part; 7. fixing ridge; 8. fixing groove; 9. limiting protrusion; 10. limiting groove; 11. reset spring; 12. stepped surface; 13. first through hole; 14. second through hole; 15. latch. DETAILED DESCRIPTION

[0029] In order to make the content of the utility model more clearly understood, the utility model is further described below based on specific embodiments in combination with the accompanying drawings.

[0030] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "top", "inner", "outer" and the like used herein to indicate positions or positional relationships are based on the positions or positional relationships shown in the 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. Unless otherwise specified, "plurality" means two or more.

[0031] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.

[0032] like Figures 1 to 6 As shown, a hand crank for a coffee bean grinder can be bent vertically without being dislocated; it includes a hand crank 1, a connecting column 2 movably connected to the hand crank 1 and installed on the hand crank coffee bean grinder, and a hand crank handle 21 middle hole provided on the hand crank 1 at one end away from the connecting column 2; 3, wherein the hand crank handle 21 middle hole; 3 of this embodiment is an oak handle, and the connecting column 2 is provided with a middle hole at one end facing the hand crank 1, a folding opening 5 is chiseled on one side of the middle hole, and a connecting head 4 is provided at one end of the hand crank 1, which is embedded in the middle hole and connected to the connecting column 2 and can be vertically folded along the folding opening 5, and also includes a fixed slide 6 which is sleeved on the outside of the connecting head 4 and can slide down along the connecting head 4, and the fixed slide 6 includes a fixing portion 62 located at one end facing the connecting column 2 and fixed to the connecting column 2.

[0033] In this embodiment, a connecting head 4 is provided at one end of the hand crank, and the connecting head 4 is precisely embedded in a preset middle hole inside the connecting column 2. A folding opening 5 is opened on one side of the middle hole, so that the hand crank can be vertically folded along the folding opening 5, which is convenient for exerting force when shaking; and a fixed slide 6 is connected to the outer cover of the connecting head 4. After vertical bending, the fixed slide 6 can abut against the folding opening 5 and be fixed to the connecting column 2 to prevent it from falling off and resetting when the hand crank is shaken.

[0034] like Figure 1 and Figure 5 As shown, in this embodiment, a group of fixed ridges 7 are extended outwardly from the side of the connecting column 2 facing the folding opening 5. Correspondingly, a fixed groove 8 structure matching the fixed ridges 7 is provided on the fixed portion 62 of the fixed slide 6. When the hand crank 1 is vertically bent and is at a right angle to the connecting column 2, the fixed groove 8 of the fixed portion 62 of the fixed slide 6 can accurately slide into the fixed ridges 7 on both sides of the folding opening 5 to form a stable stop fit. It effectively prevents the hand crank 1 from resetting due to force or accidental touch during the grinding process, so as to ensure the stability of the hand crank grinder.

[0035] like Figure 2 As shown, the fixed slide 6 of this embodiment includes not only a fixed portion 62 connected to the connecting column 2, but also a main body 61 located at one end away from the connecting column 2, the outer diameter of the main body 61 is smaller than the inner diameter of the middle hole in the connecting column 2, and the inner diameter of the middle hole is larger than the outer diameter of the fixed portion 62. By designing the inner diameter of the middle hole to be larger than the outer diameter of the fixed portion 62, the fixed portion 62 can slide into the middle hole when not folded, fix the connecting column 2, and prevent natural bending; and the outer diameter of the main body 61 is smaller than the inner diameter of the middle hole, so that the main body 61 can abut against the connecting column 2, preventing the fixed slide 6 from sliding into the middle hole as a whole, and preventing the entire fixed slide 6 from sliding into the inside of the middle hole, thereby ensuring the stability of the structure.

[0036] like Figure 4 and Figure 5 As shown, the hand crank 1 of this embodiment is provided with limiting protrusions 9 on both sides of the outer wall of one end facing the connector 4, and a matching limiting groove 10 is provided on the inner wall of the fixed slide 6, and the limiting protrusion 9 is inserted into the limiting groove 10. By inserting the limiting protrusion 9 into the limiting groove 10, the fixed slide 6 is prevented from rotating, and the fixed groove 8 is prevented from being unable to fix the convex ridge 7 to it; and the bottom of the limiting groove 10 abuts against the top of the limiting protrusion 9 to prevent the fixed slide 6 from sliding down too much, so as to achieve the limit, and enhance the stability and reliability of the device.

[0037] like Figure 3As shown, a return spring 11 is further provided in the fixed slide 6 of this embodiment, and the return spring 11 is sleeved outside the connector 4, and a step surface 12 structure is designed at the joint of the connector 4 and the hand crank 1, so as to ensure that the return spring 11 can accurately abut against the step surface 12. When the hand crank needs to be folded, the user needs to slide the fixed slide 6 down to release the fixed state of the connecting column 2, and after the folding operation is completed, the internal return spring 11 can automatically drive the fixed slide 6 to return to the original position along a preset path by virtue of its elastic performance, so as to achieve a fast and reliable return effect.

[0038] like Figure 1 and Figure 6 As shown, in this embodiment, two symmetrical first through holes 13 are arranged inside the middle hole on both sides of the folding opening 5, and a second through hole 14 is also arranged at the corresponding position of the connector 4. A latch 15 is also arranged inside the middle hole, and the latch 15 penetrates and is fixed between the first through hole 13 and the second through hole 14. After the connector 4 is embedded in the middle hole, the latch 15 successively penetrates the first through hole 13 and the second through hole 14 to form a fixed structure, so that a rotating shaft structure is formed between the connecting column 2 and the hand crank 1, and the hand crank 1 can be folded along the folding opening 5.

[0039] The working principle of this embodiment is as follows: this embodiment forms a shaft structure by providing a connector 4 at one end of the hand crank and embedding it in the middle hole of the connecting column 2, and chiseling a folding opening 5 on one side of the middle hole, so that the hand crank can be vertically folded along the folding opening 5, which is convenient for shaking and exerting force. In addition, a fixed slide 6 is added at one end of the connector 4 and is connected to the connector 4, which includes a fixed portion 62 and a main body 61, and a fixed ridge 7 extends outward on one side of the folding opening 5 of the connecting column 2, and a fixed groove 8 is provided on the fixed portion 62. When not in use, the fixed portion 62 can be inserted into the middle hole to prevent the hand crank from folding; when folding is required, the fixed slide 6 can be slid down and out of the middle hole, and after folding, the fixed groove 8 can slide into and be fixed with the fixed ridge 7 to effectively prevent the hand crank 1 from resetting.

[0040] The embodiments described above are only preferred implementation modes of the present utility model and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and modifications made by technicians in this field on the basis of the utility model shall fall within the protection scope of the present utility model.

Claims

1. A hand crank for a coffee bean grinder, comprising a hand crank, a connecting column movably connected to the hand crank and mounted on the hand crank coffee bean grinder, and a hand crank handle provided on one end of the hand crank away from the connecting column, characterized in that: The connecting column is provided with a central hole toward one end of the hand crank, and a folding opening is chiseled on one side of the central hole. The hand crank is provided with a connecting head embedded in the central hole at one end for connecting with the connecting column and capable of vertically folding along the folding opening. The connecting head also includes a fixed slide cylinder which is sleeved on the outside of the connecting head and can slide down along the connecting head. The fixed slide cylinder includes a fixing portion located toward one end of the connecting column and fixed to the connecting column.

2. A hand crank for a coffee bean grinder according to claim 1, characterized in that: The connecting column has a fixing ridge extending outwardly toward one side of the folding opening, and the fixing portion is provided with a fixing groove adapted to the fixing ridge.

3. A hand crank for a coffee bean grinder according to claim 2, characterized in that: The fixed slide cylinder also includes a main body portion facing away from one end of the connecting column, the outer diameter of the main body portion is smaller than the inner diameter of the middle hole, and the inner diameter of the middle hole is larger than the outer diameter of the fixed portion.

4. A hand crank for a coffee bean grinder according to claim 3, characterized in that: A limiting protrusion is provided on the outer wall of one end of the hand-cranked part facing the connecting head, and a corresponding limiting groove is provided on the inner wall of the fixed slide, and the limiting protrusion is inserted into the limiting groove.

5. The hand crank for a coffee bean grinder according to claim 4, characterized in that: A return spring is also provided in the fixed slide cylinder. The return spring is sleeved on the outside of the connecting head. A step surface is formed at the connection between the connecting head and the hand-cranked component, and the return spring abuts against the step surface.

6. The hand crank for a coffee bean grinder according to claim 5, characterized in that: The middle hole is provided with first through holes at two adjacent sides of the folding opening, the connecting head is provided with second through holes at corresponding positions, and the middle hole is also provided with a latch penetrating through the first through holes and the second through holes to form a fixation.

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