WO2021118172A1

WO2021118172A1 - Coffee grinder

Info

Publication number: WO2021118172A1
Application number: PCT/KR2020/017637
Authority: WO
Inventors: 윤한상
Original assignee: 주식회사 빈스코프
Priority date: 2019-12-10
Filing date: 2020-12-04
Publication date: 2021-06-17
Also published as: KR102260823B1; CN214284613U

Abstract

A coffee grinder according to an embodiment of the present invention comprises: a grinder main body having an operating shaft that rotates when coffee beans are ground; a handle unit of which a one end part is detachably coupled to the operating shaft, and which is held by a user to rotate the operating shaft when the coffee beans are ground; and a handle coupling means into which the upper end part of the operating shaft is inserted at a first location of the one end part of the handle unit and then moved to a second location of the one end part of the handle unit so that the one end part of the handle unit is placed on the upper end part of the operating shaft.

Description

coffee grinder

The present invention relates to a coffee grinder, and more particularly, to a coffee grinder in which a handle unit can be coupled to or separated from an operating shaft of a grinder body very simply.

In general, a coffee grinder is a machine for making coffee powder by crushing coffee beans. It is important that the coffee grinder grinds coffee beans uniformly to the desired grinding degree. This is because if the coffee beans are not ground uniformly, the taste of coffee becomes unstable.

The coffee grinder as described above is divided into a manual type and an electric type according to the type of power source.

A typical example of a manual coffee grinder is a hand mill that grinds coffee beans using manpower. The manual coffee grinder does not require the use of electric power, has few troubles due to its simple structure, and is generally inexpensive.

The electric coffee grinder can precisely grind coffee beans with a simple button operation, and grind a large amount of coffee beans in a short time. The electric coffee grinder as described above is operated by electric power to compensate for the disadvantages of the hand mill, but it uses various electronic devices, is weak to external shocks, and has a high risk of small breakdown.

Recently, due to the spread of home cafe culture, the number of people who enjoy making coffee directly at home increases, and accordingly, the use of a manual coffee grinder is increasing.

The manual coffee grinder has the advantage of being less burdensome for consumers to personally purchase and use due to its low price and ease of handling. In particular, recently, interest in personal manual coffee grinders is increasing, and various types of manual coffee grinders have been released to satisfy various demands of consumers.

For example, Korean Patent No. 10-1011692 (title of invention: filter-integrated hand mill, registration date: 2011.01.24) discloses a miniaturized and portable hand-operated coffee grinder. The manual coffee grinder of Korean Patent Registration No. 10-1011692 can crush and extract coffee beans in a single casing without a separate filter member.

In addition, Korean Patent Registration No. 10-0995873 (Title of the invention: portable coffee extraction device with built-in wheat, registration date: November 16, 2010) discloses a portable coffee grinder. The manual coffee grinder of Korean Patent Registration No. 10-0995873 can easily support the lower casing in which the crushed coffee beans are stored when manufacturing coffee beans through heated water after crushing the beans by a mill.

Korean Patent No. 10-1011692 (Title of Invention: Filter-integrated Hand Mill, Registration Date: January 24, 2011) and Korean Patent No. 10-0995873 (Title of Invention: Portable Coffee Extraction Device with Built-in Mill, Registration Date: November 2010). In 16), it is easy to carry through miniaturization and it is possible to easily obtain desired coffee on site.

Existing manual coffee grinders ensure sufficient crushing power of coffee beans to smoothly crush coffee beans. To this end, in the existing manual coffee grinder, a long handle is formed.

However, when the length of the handle is long, the crushing power of coffee beans can be smoothly secured, but there is a disadvantage in that portability and storage are deteriorated due to the long handle, and thus ease of use is lowered.

In addition, in the existing manual coffee grinder, it is very complicated to combine or separate the handle, which takes a lot of time, and the user's inconvenience in coupling and detaching the handle increases.

It is an object of the present invention to provide a coffee grinder capable of very simply and simply combining or disassembling a handle unit and preventing the handle unit from being unintentionally separated in the process of using the handle unit.

Another technical object of the present invention is to provide a coffee grinder that can be compactly coupled to the outer surface of the coffee grinder after the handle unit is removed when the coffee grinder is not in use.

Another technical object of the present invention is to provide a coffee grinder that can easily install a grinder blade for grinding coffee beans in a fixed position, and can prevent a problem that the grinder blade is separated from the original position or vibrates abnormally.

According to the present invention, according to the present invention, a grinder body provided with an operating shaft to be rotated during grinding of coffee beans, one end of which is detachably coupled to the operating shaft, and rotated by a user gripped by a user when grinding the coffee beans and a handle for inserting an upper end of the actuating shaft from a first position of one end of the handle unit to a second position of one end of the handle unit to seat one end of the handle unit on the upper end of the actuating shaft This is achieved by a coffee grinder comprising engaging means.

Preferably, the handle coupling means may be provided as an opening formed through one end of the handle unit.

Preferably, the handle coupling means includes an insertion hole formed in the first position so that the upper end of the operating shaft is inserted, a guide hole extending long from the insertion hole and guiding the upper end of the operating shaft to move to the second position; and a seating hole formed at the second position so that the upper end of the operating shaft moved along the guide hole is seated.

Preferably, the seating adjacent to the guide hole so that the upper end of the operating shaft does not deviate from the seating hole while the user rotates the handle unit while the upper end of the operating shaft is seated in the seating hole when coffee beans are ground. At least one step may be formed on one side of the hole.

Preferably, the upper end of the actuating shaft is capable of sliding along the guide hole at the head disposed above one end of the handle unit when coupled with the handle unit, and at both sides extending downward from the head. It may include a sliding groove that is formed to do so.

Preferably, the insertion hole may be formed in a size larger than the head portion so that the head portion can be inserted. The guide hole and the seating hole may be formed to have a size smaller than that of the head so that the head does not fall out in the downward direction.

Preferably, the grinder body includes a housing in which an inlet into which coffee beans are put is formed and an outlet through which ground coffee powder is discharged is formed in the lower portion, and a cap detachably coupled to the housing so as to cover the inlet of the housing. a male grinder blade coupled to a lower end of the operating shaft inside the housing and rotated together with the operating shaft, a female grinder blade disposed to surround the male grinder blade inside the housing and fixed to the housing; and It is detachably coupled to the lower portion of the housing and may include a container in which the coffee powder discharged through the outlet of the housing is contained.

Preferably, the grinder body may further include a grinding degree adjusting nut member screwed to the upper end of the operating shaft to adjust the grinding degree of coffee beans to move the operating shaft in an axial direction.

Preferably, a plurality of coupling grooves may be formed on the outer periphery of the grinding degree adjusting nut member at regular intervals along the circumference.

Preferably, one end of the handle unit may be provided with a coupling protrusion inserted into any one of the plurality of coupling grooves to rotate the grinding degree adjusting nut member together with the operating shaft when the handle unit is rotated.

Preferably, a through hole for exposing the upper end of the operation shaft may be formed in the central portion of the cap. The coupling protrusion may be disposed to be inserted into the through-hole portion.

Preferably, the cap may be formed in a shape that increases in height from an edge portion to a central portion so that the coupling projection is not unintentionally separated in a state in which the coupling protrusion and the coupling groove are coupled.

Preferably, the handle unit may be coupled to the outer surface of the grinder body by making the length direction of the handle unit parallel to the vertical direction after separating from the operating shaft for convenience of carrying and storage.

Preferably, a handle mounting portion for coupling the handle unit may be provided on an outer surface of the grinder body. The handle unit may be coupled to the handle mounting part through the insertion hole. A receiving groove for accommodating the upper end of the operating shaft when the handle unit is coupled to the handle mounting part may be formed in the handle handle provided at the other end of the handle unit.

Preferably, the grinder body is disposed inside the housing to provide a passage for guiding coffee beans introduced into the housing between the male grinder blade and the female grinder blade, and the male grinder blade and the female grinder It may further include a guide tube to hold the center of the blade.

Preferably, the guide tube includes a first guide tube surrounding the operating shaft, a second guide tube extending downward from the first guide tube and surrounding the male grinder blade and the female grinder blade, and in the first guide tube It may include at least one wing support portion extending toward the inner surface of the housing and fixed in contact with the inner surface of the housing.

Preferably, a flat assembly surface may be formed on one side of the outer circumferential surface of the female grinder blade. A blade fixing part protruding inwardly at a position corresponding to the assembly surface of the female grinder blade may be formed on the inner circumferential surface of the housing. In this case, an opening may be formed in the guide tube at a corresponding position so that the blade fixing part can be engaged with the assembly surface.

In the coffee grinder according to the embodiment of the present invention, the handle unit can be very easily coupled or separated from the operating shaft of the grinder body using the handle coupling means, and in particular, the working time required for coupling and separating the handle unit and The user's discomfort can be greatly improved by reducing the work man-hours.

In addition, the coffee grinder according to the embodiment of the present invention has a structure that adjusts the degree of grinding of coffee beans by changing the position of the operating shaft in a state where one end of the handle unit is separated from the upper end of the operating shaft. Because it is very simple, it is possible to perform the operation of adjusting the grind degree of coffee beans very simply and quickly, and it is also possible to simplify the operation for adjusting the grind degree of coffee beans.

In addition, in the coffee grinder according to the embodiment of the present invention, the operation of separating the handle unit from the operation shaft and coupling it to the outer surface of the grinder body can be smoothly performed, and in particular, when the coffee grinder is not used, the handle unit can be removed. By compactly combining it with the outer surface of the grinder body, the convenience for carrying and storing the coffee grinder can be greatly increased.

Further, in the coffee grinder according to the embodiment of the present invention, the handle bar of the handle unit is vertically coupled to the side surface of the grinder body by using the handle mounting part provided on the outer surface of the grinder body, but the handle handle of the handle unit is attached to the grinder body. Since it is arranged on the upper surface in the left and right directions to accommodate the upper end of the operating shaft in the receiving groove of the handle handle, the handle unit can be more stably coupled to the grinder body when the coffee grinder is not in use.

In addition, in the coffee grinder according to the embodiment of the present invention, when the handle unit is detached, the coupling protrusion provided at one end of the handle unit is provided to be caught in the through hole of the cap, so that it is seated in the seating hole of the handle coupling means when the handle unit is used When the upper end of the operating shaft is unintentionally separated from the guide hole, the coupling protrusion is caught in the through-hole portion, thereby preventing abnormal detachment of the handle unit in advance.

In addition, the coffee grinder according to the embodiment of the present invention forms an assembly surface on one side of the outer peripheral surface of the female grinder blade for grinding coffee beans, and the blade fixing part formed on the inner peripheral surface of the housing is attached to the assembly surface through the assembly hole of the guide tube. Because it is a close-fitting structure, the blade fixing part and the assembly surface are engaged with each other so that the female grinder blade can be accurately installed in the correct position, and it is also possible to prevent abnormal rotation or vibration of the female grinder blade due to the interference between the blade fixing part and the assembly surface. can

1 is a perspective view showing a coffee grinder according to an embodiment of the present invention.

Figure 2 is a perspective view showing a storage state of the coffee grinder shown in Figure 1;

3 and 4 are cross-sectional and exploded perspective views illustrating the coffee grinder shown in FIG. 1 .

FIG. 5 is a view illustrating a coupling process of the handle unit shown in FIG. 1 .

6 is a view showing a seating state of the operating shaft and the seating hole when the handle unit shown in FIG. 5 is rotated.

7 is a cross-sectional view illustrating a state in which the coupling protrusion is caught in the through-hole portion when the handle unit shown in FIG. 5 is abnormally detached.

FIG. 8 is a view showing a process of mounting the handle unit shown in FIG. 2 .

9 is a view showing a cross section taken along line A-A shown in FIG. 3 .

10 is an exploded perspective view illustrating the guide tube and the female grinder blade shown in FIG. 9 .

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings. However, in describing the present invention, a description of a function or configuration already known will be omitted in order to clarify the gist of the present invention.

Figure 1 is a perspective view showing a coffee grinder 100 according to an embodiment of the present invention, Figure 2 is a perspective view showing a storage state of the coffee grinder 100 shown in Figure 1, Figures 3 and 4 are It is a cross-sectional view and an exploded perspective view showing the coffee grinder 100 shown in 1 . 5 is a view showing a coupling process of the handle unit 120 shown in FIG. 1 , and FIG. 6 is a view showing the seating of the operating shaft 222 and the seating hole 136 when the handle unit 120 shown in FIG. 5 is rotated. It is a view showing the state, and FIG. 7 is a cross-sectional view showing a state in which the coupling protrusion is caught in the through-hole portion when the handle unit is abnormally detached. FIG. 8 is a view illustrating a mounting process of the handle unit 120 shown in FIG. 2 . 9 is a view showing a cross section taken along line A-A shown in FIG. 3 , and FIG. 10 is an exploded perspective view showing the guide tube 230 and the female grinder blade 226 shown in FIG. 9 .

1 to 4 , a coffee grinder 100 according to an embodiment of the present invention includes a grinder body 110 , a handle unit 120 , and a handle coupling means 130 .

The coffee grinder 100 of this embodiment is a manual hand mill that grinds coffee beans directly by using the user's manpower. The coffee grinder 100 may be provided as an impact grinder or a gap grinder. Hereinafter, it will be described that the coffee grinder 100 of this embodiment is provided as a gap grinder.

The gap-type grinder as described above has a burr type and a roll type, but hereinafter, it will be described that coffee beans are pulverized using a conical burr type grinder blade.

In addition, the coffee grinder 100 of this embodiment will be described as adjusting the grinding degree of the grinder member by changing the position of the operating shaft 222 after separating the handle unit 120 from the operating shaft 222 . That is, since the taste and aroma of coffee vary according to the particle size of coffee beans, the degree of grinding of the grinder member may be appropriately adjusted according to the taste of coffee desired by the user.

1 to 5, the grinder body 110 of the present embodiment is a device formed to grind coffee beans. The grinder body 110 may be provided with an operating shaft 222 that rotates when coffee beans are ground. The lower end of the operating shaft 222 may be connected to a male grinder blade 224 to be described later inside the grinder body 110 .

The operation shaft 222 as described above may be coupled to the handle unit 120 so as to be rotated by the user when the coffee beans are ground. To this end, the upper end 140 of the operation shaft 222 may be disposed to penetrate through the upper surface of the grinder body 110 to be exposed to the upper side of the grinder body 110 .

Specifically, the upper end 140 of the operating shaft 222 may be provided as a head portion 144 and a sliding groove portion (142).

The head 144 may be disposed above one end of the handle unit 120 when coupled to the handle unit 120 . The head 144 as described above is inserted or detached from the insertion hole 132 of the handle coupling means 130 to be described later, and the guide hole 134 of the handle coupling means 130 to couple the handle unit 120 . and the seating hole 136 may be caught.

The sliding grooves 142 may be respectively formed on both sides from the lower side of the head 144 of the upper end 140 of the actuating shaft 222 so as to be slidably movable along the guide hole 134 . That is, the sliding groove 142 is disposed on both sides of the upper end 140 of the operating shaft 222 , and the handle is coupled when the head 144 is inserted into the insertion hole 132 of the handle coupling means 130 . It may be formed at a position corresponding to the guide hole 134 of the means 130 .

On the other hand, the detailed configuration of the grinder body 110 of the present embodiment will be described in detail again below.

1 to 5 , the handle unit 120 of the present embodiment is a member for rotating the operating shaft 222 by holding the user when grinding coffee beans. One end of the handle unit 120 may be detachably coupled to the operating shaft 222 . The handle unit 120 may be elongated in a bar shape of a predetermined length to sufficiently secure the grinding power of coffee beans even with a small force of the user.

One end of the handle unit 120 as described above may be conveniently coupled to or separated from the upper end 140 of the operating shaft 222 by the handle coupling means 130 . In addition, the other end of the handle unit 120 may be provided in a structure that allows the user to easily grip the handle unit 120 and rotate the handle unit 120 smoothly.

Specifically, the handle unit 120 may include a handle bar 122 and a handle handle 124 .

One end of the handle bar 122 may be coupled to the upper end 140 of the operating shaft 222 to rotate together with the operating shaft 222 . To this end, the handle coupling means 130 may be provided at one end of the handle bar 122 .

The handle handle 124 is a portion to which the user's operating force for rotating the operating shaft 222 is transmitted. The handle handle 124 may be elongated in an upward direction perpendicular to the longitudinal direction of the handle bar 122 on an upper portion of the other end of the handle bar 122 to be easily gripped by a user. The handle handle 124 as described above may be rotatably connected to the other end of the handle bar 122 .

On the other hand, the handle unit 120 of this embodiment, the first direction (D1) to insert the upper end 140 of the operating shaft 222 to one side of the handle coupling means 130 formed at one end of the handle bar 122. ), and then crosses the first direction D1 so that the upper end 140 of the actuating shaft 222 is seated on the other side of the handle coupling means 130 formed at one end of the handle bar 122 . may be moved in the second direction D2. That is, the handle unit 120 is moved in the first direction (D1) and then moved again in the second direction (D2) only with a simple operation of moving one end of the handle unit 120 to the upper end 140 of the operating shaft 222 . can be easily combined.

Hereinafter, in the present embodiment, the first direction D1 of the handle unit 120 may be set to a direction in which the handle unit 120 is vertically lowered, and the second direction D2 of the handle unit 120 is It may be set in a direction of horizontally moving along the longitudinal direction of the handle bar 122 from one end of the handle unit 120 toward the other end. However, the present invention is not limited thereto, and the first direction D1 and the second direction D2 of the handle unit 120 may be variously changed according to design conditions and circumstances of the coffee grinder 100 .

1 to 6 , the handle coupling means 130 of the present embodiment includes the handle unit 120 after inserting the upper end 140 of the operating shaft 222 at the first position of the one end of the handle unit 120 . ), one end of the handle unit 120 can be moved to a second position, and one end of the handle unit 120 can be seated on the upper end of the operating shaft 222 . As described above, the handle coupling means 130 may be provided as an opening formed to penetrate through one end of the handle unit 120 . That is, the opening of the handle coupling means 130 may be provided at one end of the handle bar 122 of the handle unit 120 in a lengthwise direction of the handle bar 122 .

Specifically, the handle coupling means 130 may include an insertion hole 132 , a guide hole 134 , and a seating hole 136 .

Here, the insertion hole 132 may be formed at a first position of one end of the handle unit 120 . The upper end of the operating shaft 222 may be inserted into the insertion hole 132 during the coupling process of the handle unit 120 . The insertion hole 132 may be formed on one side of the handle coupling means 130 . In this case, the upper end 140 of the operating shaft 222 may be inserted into the insertion hole 132 in a direction opposite to the first direction D1 when the handle unit 120 is coupled. A direction opposite to the first direction D1 as described above is a direction vertically upward from the upper end 140 of the actuating shaft 222 .

The insertion hole 132 as described above may be formed in a size larger than that of the head 144 to enable insertion of the head 144 . For example, the head 144 may be formed in a cylindrical shape, and the insertion hole 132 may be formed in a circular hole shape corresponding to the head 144 .

In addition, the guide hole 134 may be formed to have a structure that is elongated from one side of the insertion hole 132 . One end of the guide hole 134 may be connected in communication with one side of the insertion hole 132 . As an example, the guide hole 134 may be provided in a slit shape in which both ends are connected to the insertion hole 132 and the seating hole 136 , and may be provided long in a straight line along the length direction of the handle bar 122 . have.

The guide hole 134 as described above may perform a function of guiding the movement of the upper end 140 of the operation shaft 222 . Accordingly, the upper end 140 of the operating shaft 222 is moved in the opposite direction to the second direction D2 along the guide hole 134 when the handle unit 120 is coupled to the insertion hole 132 in the seating hole ( 136) can be moved. A direction opposite to the second direction D2 as described above is a direction from the insertion hole 132 to the seating hole 136 along the guide hole 134 .

Also, the seating hole 136 may be formed at a second position of one end of the handle unit 120 . The upper end 140 of the operating shaft 222 moved along the guide hole 134 may be seated in the seating hole 136 . The seating hole 136 is formed on the other side of the handle coupling means 130 , and may be connected in communication with the other end of the guide hole 134 .

The guide hole 134 and the seating hole 136 as described above may be formed in a size smaller than the head portion 144 to prevent separation of the head portion 144 . At this time, the guide hole 134 and the seating hole 136 may be slidably inserted into the sliding groove 142 formed in the upper end 140 of the operation shaft 222 . Since the guide hole 134 and the seating hole 136 are slidably inserted into the sliding groove 142 , the upper end 140 of the operating shaft 222 is caught in the guide hole 134 and the seating hole 136 . to be stably coupled to the handle unit 120 .

5 and 6 , at least one step 138 may be formed on one side of the seating hole 136 adjacent to the guide hole 134 . When the handle unit 120 is rotated while the upper end 140 of the actuating shaft 222 is disposed inside the seating hole 136 , the upper end 140 of the actuating shaft 222 is inserted into the seating hole 136 . It can be moved to a position caught in the step 138 in. Accordingly, when the handle unit 120 is rotated to grind coffee beans while the upper end 140 of the operating shaft 222 is seated in the seating hole 136 , the operating shaft during the rotation of the handle unit 120 . Since the upper end 140 of the 222 is caught on the step 138, it is possible to prevent it from being separated from the seating hole 136.

For example, the seating hole 136 may be formed in the shape of a square hole that is expanded in size with respect to the guide hole 134 . The mounting hole 136 as described above may be provided to have a width smaller than the diameter of the insertion hole 132 and larger than the width of the guide hole 134 .

That is, the seating hole 136 is slidably inserted into the sliding groove 142 , but as the size of the seating hole 136 expands stepwise in the width direction, it is seated with the upper end 140 of the operating shaft 222 . A predetermined gap may be formed between the holes 136 . At this time, when the user rotates the handle unit 120 , the handle unit 120 moves as much as the gap formed between the upper end 140 of the operating shaft 222 and the seating hole 136 , the coupling protrusion 126 and the coupling groove to be described later. It may be rotated around the coupling portion of the 242 , and the seating hole 136 may also be rotated so that the upper end 140 of the operation shaft 222 may be caught by the step 138 . Therefore, when the handle unit 120 is rotated normally in a state coupled to the upper end 140 of the actuating shaft 222 , the upper end 140 of the actuating shaft 222 is caught on the step 138 and separated from the guide hole 134 . This phenomenon can be prevented in advance.

Meanwhile, FIGS. 2 and 8 show a structure for carrying or storing the coffee grinder 100 when the coffee grinder 100 is not used. That is, in this embodiment, the handle unit 120 can be compactly mounted on the outer surface of the coffee grinder 100 in order to increase the portability and storability of the coffee grinder 100 .

1 to 3 and 8, the handle unit 120 of this embodiment is separated from the operating shaft 222 to increase the convenience of carrying and storage for the coffee grinder 100, and then the handle unit ( 120) may be long coupled to the outer surface of the grinder body 110 in the vertical direction.

That is, in the coffee grinder 100 of this embodiment, the handle bar 122 of the handle unit 120 can be mounted on the side surface of the grinder body 110 in a vertical direction in a vertical direction in a situation where grinding of coffee beans is not required. , the handle handle 124 of the handle unit 120 may be disposed to cover the upper surface of the grinder body 110 in the left and right directions. Accordingly, since the handle unit 120 is mounted in close contact with the side and upper surfaces of the grinder body 110 , the handle unit 120 and the grinder body 110 can be very compactly and stably carried and stored.

Specifically, the storage structure of the coffee grinder 100 may include a handle mounting part 150 , a mounting hole 160 , and a receiving groove 170 .

1 to 3 and 8 , the handle mounting part 150 may be provided on a side part of the grinder body 110 to mount the handle unit 120 . That is, the handle bar 122 of the handle unit 120 may be coupled to the handle mounting unit 150 through the insertion hole 132 of the handle coupling means 130 .

The handle mounting unit 150 as described above may include a sliding guide 152 and a guide head 154 .

The sliding guide 152 may be inserted into the insertion hole 132 of the handle coupling means 130 , and may be slidably inserted along the mounting hole 160 to support the handle unit 120 . . The sliding guide 152 as described above may be formed to be elongated to correspond to the longitudinal direction of the mounting hole 160 . The sliding guide 152 can support the load of the handle unit 120 in the vertical direction while being inserted into the mounting hole 160 , and the degree of shaking of the handle unit 120 in the circumferential direction of the grinder body 110 . can be prevented

The guide head 154 may be provided to protrude from the grinder body 110 at the end of the sliding guide 152 . The guide head 154 may be formed similarly to the head 144 of the upper end 140 of the actuating shaft 222 , and thus be inserted through the insertion hole 132 of the handle coupling means 130 . can

1 to 3 and 8 , the mounting hole 160 may be formed to have a structure elongated from the other side of the insertion hole 132 . One end of the mounting hole 160 as described above may be connected in communication with the other side of the insertion hole 132 . For example, the mounting hole 160 may be formed in a slit shape in the insertion hole 132 in a straight line shape along the longitudinal direction of the handle bar 122 .

Hereinafter, in the present embodiment, it will be described that the mounting hole 160 is formed to have the same width as the guide hole 134 , and is long arranged in the opposite direction to the guide hole 134 around the insertion hole 132 . Accordingly, the mounting hole 160 may be integrally formed with the handle coupling means 130 .

The mounting hole 160 as described above can perform a function of guiding the movement of the sliding guide 152 of the handle mounting unit 150, and is caught by the sliding guide 152 and the guide head 154 to the handle mounting unit ( 150) can also perform the function of stably supporting.

2 to 4 and 8 , the receiving groove 170 may be provided to accommodate the upper end 140 of the operating shaft 222 when the handle unit 120 and the handle mounting unit 150 are coupled. have. The receiving groove 170 may be formed in the handle handle 124 provided at the other end of the handle unit 120 .

That is, the handle handle 124 of the handle unit 120 may be seated on the upper surface of the grinder body 110 while the handle unit 120 is mounted on the handle mounting unit 150 . To this end, the handle handle 124 may be provided in a shape perpendicular to the other end of the handle bar 122 . In the handle handle 124 as described above, a receiving groove 170 may be provided at a position corresponding to the upper end 140 of the operation shaft 222 among the portions seated on the upper surface of the grinder body 110 . The receiving groove 170 may be formed in a groove shape into which the upper end 140 of the actuating shaft 222 is fitted, and the handle unit 120 is stably connected to the upper end 140 of the actuating shaft 222 . can be supported

On the other hand, the detailed configuration of the grinder body 110 of the present embodiment is shown in FIGS. 3, 4, 7, 9 and 10 . Hereinafter, the detailed configuration of the grinder body 110 according to the present embodiment will be described in detail.

1 to 4, 7, 9, and 10, the grinder body 110 according to an embodiment of the present invention includes a housing 200, a cap 210, a grinding unit 220, and a guide tube. 230 , a grinding degree adjustment nut member 240 , and a container 250 may be included.

In the present embodiment, the housing 200 and the container 250 are described as having a hollow cylindrical shape, but the present invention is not limited thereto and may be formed in a cylindrical shape of various shapes. In addition, the grinding unit 220 is described as composed of a conical burr (conical burr) type grinder blade.

1 to 4 , the housing 200 of this embodiment may be formed in a cylindrical shape with a hollow inside in the vertical direction. An inlet for introducing coffee beans into the housing 200 may be formed at an upper portion of the housing 200 , and an outlet for discharging ground coffee powder may be formed at a lower portion of the housing 200 . In this case, the cap 210 may be detachably disposed at the inlet of the housing 200 , and the container 250 may be detachably disposed at the outlet of the housing 200 .

The blade fixing part 204 may be formed on the inner circumferential surface of the housing 200 at a position corresponding to the assembly surface 226a formed on the female grinder blade 226 of the grinding unit 220 to be described later. The blade fixing part 204 may be provided to protrude inward from the inner circumferential surface of the housing 200 , and disposed in close contact with the assembly surface 226a in the process of assembling the crushing unit 220 inside the housing 200 . can be

A housing holder 202 may be provided on the outer circumferential surface of the housing 200 so as to be easily gripped by a user. A handle mounting part 150 may be disposed on the housing holder 202 .

1 to 5 and 7 , the cap 210 of this embodiment may be detachably coupled to the upper portion of the housing 200 to cover the inlet of the housing 200 . The cap 210 as described above is a cover for opening and closing the inlet, and may form the upper surface of the grinder body 110 .

A through hole 212 for exposing the upper end 140 of the operating shaft 222 may be formed in the central portion of the cap 210 . That is, the operating shaft 222 may be disposed to be rotatably penetrated through the through-hole portion 212 , and the upper end 140 may be disposed to protrude upward of the through-hole portion 212 .

Here, the through-hole portion 212 may be provided in a structure that protrudes upwardly higher than other portions of the cap 210 . For example, in the present embodiment, the height of the cap 210 may be increased from the edge of the cap 210 toward the center of the cap 210 . However, the present invention is not limited thereto, and it is also possible to form a rib-shaped raised structure along the periphery of the through-hole part 212 , or additionally attach a ring-shaped member to the periphery of the through-hole part 212 .

Meanwhile, the cap 210 may be formed of an elastically deformable material. For example, the cap 210 may be formed of a silicon material. When the cap 210 is formed of an elastically deformable material as described above, the user presses the upper portion of the cap 210 to move the through-hole portion 212 downward when the handle unit 120 is coupled or separated, and the handle unit 120 is moved downward. ) and the through-hole portion 212 can be prevented from interfering in advance.

As shown in FIGS. 3, 4, 9 and 10 , the grinding unit 220 of this embodiment is a device for making coffee powder of a desired grinding degree by grinding the coffee beans put into the housing 200 . The crushing unit 220 may be provided inside the housing 200 and driven by a user's operating force input to the operating shaft 222 .

Specifically, the grinding unit 220 may include an operating shaft 222 , a male grinder blade 224 , and a female grinder blade 226 .

The actuating shaft 222 is disposed so that the upper end 140 protrudes toward the upper side of the housing 200 along the inner center of the housing 200 , and may be rotatably disposed inside the housing 200 . The lower end of the operating shaft 222 may be connected to the male grinder blade 224 . On the other hand, when the operating shaft 222 is raised and lowered in the vertical direction, the position of the male grinder blade 224 is also raised and lowered in the vertical direction, so that the grind degree of coffee beans can be varied.

The male grinder blade 224 may be coupled to the lower end of the operating shaft 222 inside the housing 200 . The male grinder blade 224 may rotate together with the actuating shaft 222 .

The female grinder blade 226 may be disposed to surround the male grinder blade 224 inside the housing 200 . The female grinder blade 226 may be fixed by the guide tube 230 and the housing 200 .

Meanwhile, coffee beans are supplied between the gap formed between the female grinder blade 226 and the male grinder blade 224, and the degree of grinding may be changed according to the size of the gap between the female grinder blade 226 and the male grinder blade 224. can In this embodiment, when the operation shaft 222 is lifted, the size of the gap between the female grinder blade 226 and the male grinder blade 224 is reduced, so that the grinding degree of coffee beans can be increased, and the operation shaft 222 is moved downward. When it is lowered, the size of the gap between the female grinder blade 226 and the male grinder blade 224 is turned on, so that the grinding degree of coffee beans may be lowered.

In addition, a flat assembly surface 226a may be formed on one side of the outer peripheral surface of the female grinder blade 226 . The assembling surface 226a as described above can set the position of the female grinder blade 226 through interference with the blade fixing part 204 of the housing 200, and also the female grinder blade 226 rotates abnormally. or vibration problem.

3, 4, 9 and 10, the guide tube 230 of this embodiment is a male grinder blade 224 and a female grinder blade ( 226) may perform a function of providing a passage between them, and may also perform a function of holding the center of the male grinder blade 224 and the female grinder blade 226.

The guide tube 230 as described above may be disposed inside the housing 200 . The guide tube 230 may be mounted and fixed to the inner surface of the housing 200 , and may be provided in a shape surrounding the grinding unit 220 to support the grinding unit 220 .

Specifically, the guide tube 230 may include a first guide tube 232 , a second guide tube 234 , and a wing support 236 .

The first guide tube 232 may be formed in a shape surrounding the operation shaft 222 . That is, the first guide tube 232 may be formed in a vertical tube shape that rotatably supports the operating shaft 222 .

The second guide tube 234 may extend downward from the first guide tube 232 , and may be formed in a shape surrounding the male grinder blade 224 and the female grinder blade 226 . The second guide tube 234 is provided in a cylindrical shape connected in communication with the lower portion of the first guide tube 232 , and may be formed in a cylindrical shape surrounding the outer circumferential surface of the female grinder blade.

The wing support 236 may extend from the first guide tube 232 toward the inner surface of the housing 200 so as to be fixed in contact with the inner surface of the housing 200 . Accordingly, the first guide tube 232 may be stably supported and fixed to the inside of the housing 200 by the wing support 236 .

Meanwhile, an assembly hole 234a having an opening shape may be provided at one side of the second guide tube 234 . That is, the assembly hole 234a may be formed at a position corresponding to the blade fixing part 204 and the assembly surface 226a, and the blade fixing part 204 is attached to the assembly surface 226a through the assembly hole 234a. may be interlocked. In this case, an opening may be formed in at least one portion of the assembly hole 234a. Accordingly, the blade fixing part 204 inserts the guide tube 230 into the housing 200 in the axial direction and inserts it into the assembly hole 234a through the opening of the assembly hole 234a in the process of assembling. can be

1, 3 to 7, 7 and 10, the grinding degree adjusting nut member 240 of the present embodiment can adjust the grinding degree of coffee beans. The grinding degree adjustment nut member 240 may be screw-coupled to the upper end 140 of the operation shaft 222 . When the grinding degree adjusting nut member 240 is rotated as described above, the operating shaft 222 can be moved up and down in the axial direction, and accordingly, a gap formed between the female grinder blade 226 and the male grinder blade 224 . This change may change the degree of grinding of coffee beans.

Here, a female screw part may be formed on the inner circumferential surface of the grinding degree adjusting nut member 240 , and a male thread part for screwing the grinding degree adjusting nut member 240 to the upper end 140 of the operation shaft 222 may be formed. . The male screw part is disposed below the sliding groove part 142 of the upper end 140 of the actuating shaft 222 , and the length of the male screw part may be determined according to the elevating length of the actuating shaft 222 .

In addition, a plurality of coupling grooves 242 may be formed on the outer periphery of the grinding degree adjusting nut member 240 at regular intervals along the circumference. The coupling grooves 242 may be used to rotate the grinding degree adjusting nut member 240 .

On the other hand, one end of the handle unit 120 may be provided with a coupling protrusion 126 to be inserted into any one of the plurality of coupling grooves 242. Accordingly, the grinding degree adjusting nut member 240 may be rotated together with the operating shaft 222 by the coupling groove 242 and the coupling protrusion 126 when the handle unit 120 rotates. Referring to FIG. 7 , the coupling protrusion 126 may be formed to protrude horizontally from one end of the handle bar 122 and then be formed to extend downwardly toward the coupling groove 242 .

The coupling protrusion 126 as described above may be disposed to be inserted into the through hole portion 212 . When the coupling protrusion 126 is unintentionally separated from the coupling state between the coupling protrusion 126 and the coupling groove 242 , the coupling protrusion 126 is caught by the through-hole portion 212 , thereby preventing abnormal separation. Accordingly, the problem that the handle unit 120 is unintentionally pushed out or removed from the upper end 140 of the actuating shaft 222 can be solved. However, when the handle unit 120 is normally coupled to or separated from the upper end 140 of the actuating shaft 222, the interference between the through-hole portion 212 and the coupling protrusion 126 is prevented by pressing the cap 210 to deform. can be avoided

The container 250 may contain coffee powder discharged through the outlet of the housing 200 . The container 250 may be detachably coupled to an outlet formed in the lower portion of the housing 200 . The container 250 as described above may be formed of a transparent material in order to easily check the amount of coffee powder with the naked eye.

The present invention is not limited to the above-described embodiments, and it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, it should be said that such modifications or variations belong to the claims of the present invention.

The present invention can be used in a coffee grinder for grinding coffee beans in coffee extraction.

Claims

a grinder body provided with an operating shaft that rotates when coffee beans are ground;

a handle unit having one end detachably coupled to the operating shaft, the handle unit being gripped by the user when the coffee beans are ground and rotating the operating shaft; and

a handle coupling means for inserting the upper end of the actuating shaft at the first position of the one end of the handle unit and moving it to a second position of the one end of the handle unit to seat one end of the handle unit at the upper end of the actuating shaft;

A coffee grinder comprising a.
According to claim 1,

The handle coupling means,

Coffee grinder, characterized in that provided with an opening formed through one end of the handle unit.
3. The method of claim 2,

The handle coupling means,

an insertion hole formed in the first position so that the upper end of the operating shaft is inserted;

a guide hole extending long from the insertion hole and guiding the upper end of the operating shaft to move to the second position; and

a seating hole formed at the second position so that the upper end of the operating shaft moved along the guide hole is seated;

Coffee grinder comprising a.
4. The method of claim 3,

At one side of the seating hole adjacent to the guide hole, so that the upper end of the operating shaft does not deviate from the seating hole while the user rotates the handle unit while the upper end of the operating shaft is seated in the seating hole when coffee beans are ground. Coffee grinder, characterized in that at least one step is formed.
4. The method of claim 3,

The upper end of the operating shaft may include a head disposed above one end of the handle unit when coupled to the handle unit; and a sliding groove formed on both sides extending in the downward direction from the head to be slidably movable along the guide hole.

The insertion hole is formed in a size larger than that of the head so that the head can be inserted,

Coffee grinder, characterized in that the guide hole and the seating hole is formed in a size smaller than the head so that the head does not fall out in the downward direction.
5. The method of claim 4,

A coffee grinder, characterized in that an indicator line indicating a direction of the sliding groove is formed on the upper surface of the head.
According to claim 1,

The grinder body is

a housing in which an inlet into which coffee beans are put is formed, and an outlet through which the ground coffee powder is discharged is formed in the lower portion;

a cap detachably coupled to the housing to cover the inlet of the housing;

a male grinder blade coupled to a lower end of the operating shaft inside the housing and rotated together with the operating shaft;

a female grinder blade disposed inside the housing to surround the male grinder blade and fixed to the housing; and

a container detachably coupled to the lower portion of the housing and containing coffee powder discharged through the outlet of the housing;

Coffee grinder comprising a.
8. The method of claim 7,

The grinder body further includes a grinding degree adjusting nut member screwed to the upper end of the operating shaft to adjust the grinding degree of coffee beans to move the operating shaft in the axial direction;

A plurality of coupling grooves are formed on the outer periphery of the grinding degree adjusting nut member at regular intervals along the circumference,

Coffee grinder, characterized in that the one end of the handle unit is provided with a coupling protrusion inserted into any one of the plurality of coupling grooves to rotate the grinding degree adjusting nut member together with the operating shaft when the handle unit is rotated. .
9. The method of claim 8,

A through hole for exposing the upper end of the operating shaft is formed in the central portion of the cap,

The coupling protrusion is disposed to be inserted into the through hole portion,

Coffee grinder, characterized in that the cap is formed in a shape in which the height increases from the edge to the center so that the coupling protrusion is not unintentionally separated from the coupling protrusion and the coupling groove.
4. The method of claim 3,

The handle unit is separated from the operating shaft for convenience of portability and storage, and the longitudinal direction of the handle unit is parallel to the vertical direction, and the coffee grinder is coupled to the outer surface of the grinder body.
11. The method of claim 10,

A handle mounting portion for coupling the handle unit is provided on an outer surface of the grinder body,

The handle unit is coupled to the handle mounting portion through the insertion hole,

The coffee grinder according to claim 1, wherein a receiving groove for accommodating the upper end of the operating shaft when the handle unit is coupled to the handle mounting portion is formed in the handle handle provided at the other end of the handle unit.
8. The method of claim 7,

The grinder body is

A guide disposed inside the housing to provide a passage for guiding coffee beans introduced into the housing between the male grinder blade and the female grinder blade, and to hold the center of the male grinder blade and the female grinder blade tube;

Coffee grinder further comprising a.
13. The method of claim 12,

The guide tube,

a first guide tube surrounding the actuation shaft;

a second guide tube extending downward from the first guide tube and enclosing the male grinder blade and the female grinder blade; and

at least one wing support portion extending from the first guide tube toward the inner surface of the housing and fixed in contact with the inner surface of the housing;

Coffee grinder comprising a.
13. The method of claim 12,

A flat assembly surface is formed on one side of the outer peripheral surface of the female grinder blade,

A blade fixing part protruding inwardly at a position corresponding to the assembly surface of the female grinder blade is formed on the inner circumferential surface of the housing,

Coffee grinder, characterized in that the guide tube has an opening formed at a corresponding position so that the blade fixing part can be engaged with the assembly surface.