A coffee machine that combines grinding and extraction.

Abstract

A coffee machine integrating grinding and extraction includes a mounting base at the front of the machine body, a support base slidably connected to the mounting base, and a mounting groove on the support base. A powder outlet is located on the left side of the mounting base, covered by a flip-top structure. A front drive plate is located at the front of the support base; when the funnel slides to the left, the front drive plate rotates the flip-top structure, connecting the powder outlet to the funnel. An extraction port is located on the right side of the mounting base, containing an extraction head driven by a power mechanism to move up and down within the extraction port. An extraction water inlet is located on the back of the extraction head and connected to a boiler. The advantages of this invention are: the support base slidably connects to the mounting base, allowing users to automate grinding, extraction, and tamping operations simply by moving the funnel. The operation process is highly integrated and intelligent, simplifying user operation and improving convenience.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, specifically a coffee machine that integrates grinding and extraction. Background Technology

[0002] With rising demands for coffee quality and an increasingly fast-paced lifestyle, all-in-one coffee machines are gaining popularity. These machines integrate the core steps of grinding coffee beans and extracting and brewing the ground coffee powder into a single device, providing users with a more convenient coffee-drinking experience.

[0003] In the market, many integrated coffee grinders and extractors have complex internal structures to accommodate multiple functions, resulting in large overall sizes and inconvenient storage and transportation. Secondly, while existing coffee machines combine grinding and extraction functions, in practice, users often need to remove the ground coffee from the grinding chamber using a separate powder dispenser, and then manually shake, tap, or use a dedicated powder spreader to distribute the coffee powder evenly within the dispenser. Following this, users need to use a tamper to compact the coffee powder into a uniform puck, which requires a certain level of skill and experience, increasing workload and extending brewing time. For novice coffee makers, lack of experience often leads to operational errors, reducing coffee quality. Therefore, further improvements are necessary. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a coffee machine that integrates grinding and extraction, with a simple structure, low manufacturing cost, and a sliding support base that enables automatic grinding, tamping, and extraction. This significantly improves operational convenience, highly integrates and automates the operation process, enhances user experience and safety, and is stable and reliable.

[0005] The purpose of this utility model is achieved in the following way: a coffee machine integrating grinding and extraction, including a mounting base at the front end of the machine body, a support base slidably connected to the mounting base, the support base having an installation groove, and a funnel detachably installed in the installation groove; a powder outlet is provided on the left side of the mounting base, and a flip-top structure is provided covering the powder outlet; a front drive plate is provided at the front end of the support base, the funnel slides to the left, and the front drive plate drives the flip-top structure to rotate, connecting the powder outlet and the funnel; an extraction port is provided on the right side of the mounting base, and an extraction head is installed in the extraction port, the extraction head being driven by a power mechanism to move up and down in the extraction port; an extraction water inlet is provided on the back of the extraction head, and the extraction water inlet is connected to the boiler; the mounting base also has a sensing device for sensing the position of the support base.

[0006] The sensing device includes a water pump micro switch and a grinding micro switch mounted on the mounting base. A trigger rod is provided on one side of the rear end of the bracket. When the funnel slides to the left, the trigger rod triggers the grinding micro switch; when the funnel slides to the right, the trigger rod triggers the water pump micro switch.

[0007] The flip-top structure includes a hinge base and a rotating shaft hinged therein. A flip-top is provided on the inner side of the rotating shaft, extending into the powder outlet and covering the powder outlet. A linkage plate is installed on the rotating shaft, and the front drive plate contacts the linkage plate to drive the rotating shaft to rotate, thereby opening and closing the powder outlet.

[0008] The rotating shaft is fitted with a torsion spring, which drives the rotating shaft to rotate. The flip cover always covers the powder outlet and closes it.

[0009] A reset spring is provided between the bracket and the mounting base, and the reset spring pulls the bracket to slide towards the extraction port side.

[0010] A self-locking device is provided between the bracket base and the mounting base. The self-locking device includes a cam and a limiting rod fitted therein. A push spring is provided between the limiting rod and the cam. The push spring pushes the limiting rod to extend outward elastically at all times. A rear drive plate is provided at the rear end of the bracket base. The limiting rod is snapped onto the rear drive plate to lock the bracket base on the powder outlet.

[0011] The self-locking device also includes a rotary motor connected to the camshaft. The inner wall of the cam is provided with a slide table. Correspondingly, the cylindrical surface of the limiting rod is provided with a sliding groove. The slide table is connected to the sliding groove. The rotary motor drives the cam to rotate, and the slide table drives the limiting rod to retract inward and separate from the rear drive plate, releasing the support seat.

[0012] The cylindrical protrusion of the limiting rod is provided with a guide platform, and the bottom of the mounting base is provided with a guide groove. The guide platform is locked in the guide groove, and the limiting rod extends into the guide groove and slides back and forth.

[0013] The power mechanism includes a piston cylinder, inside which a piston head is installed. The piston head is connected to the extraction head via a piston rod. The piston head isolates the piston cylinder into a relatively sealed rod chamber and a rodless chamber. The rodless chamber is connected to a powder-pressing water pump via a water inlet.

[0014] A return spring is also installed in the rod chamber, and the return spring always pushes the piston head toward the rodless chamber.

[0015] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.

[0016] 2. The support base is set to slide left and right on the mounting base. Users can automate operations such as grinding, extraction, and pressing simply by moving the funnel. The operation process is highly integrated and intelligent, simplifying user operation and improving the convenience of operation.

[0017] 3. Equipped with self-locking and sensing devices to enhance user experience and security.

[0018] 4. The grinding and extraction functions are integrated through the sliding of the support base, which is ingenious, highly integrated, and makes high space utilization.

[0019] 5. The reset spring ensures the automatic reset of the support base, simplifying user operation; the guide structure ensures the precise movement trajectory of the support base and self-locking device, enhancing the structural stability and reliability of the coffee machine. Attached Figure Description

[0020] Figure 1 This is a rendering of the final assembly of this utility model.

[0021] Figure 2 This is a schematic diagram of the grinding state in this utility model.

[0022] Figure 3 This is a schematic diagram of the extraction state in this utility model.

[0023] Figure 4 This is an initial schematic diagram of the extraction state in this utility model.

[0024] Figure 5 This is a schematic diagram of the powder pressing process in the extraction state in this utility model.

[0025] Figure 6 This is an exploded view of the structure of the funnel, support base, and mounting base in this utility model.

[0026] Figure 7 This is an exploded view of the support base and reset spring in this utility model.

[0027] Figure 8 This is an exploded view of the self-locking device in this utility model.

[0028] Figure 9 This is a cross-sectional view of the self-locking device in this utility model.

[0029] Figure 10 This is a schematic diagram of the flip-top structure in this utility model. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings. A coffee machine integrating grinding and extraction includes a mounting base 2 located at the front end of the machine body 1, a support base 3 slidably connected to the mounting base 2, and a mounting groove 31 provided on the support base 3, in which a funnel 10 is detachably installed; a powder outlet 21 is provided on the left side of the mounting base 2, and a flip-top structure 5 is provided covering the powder outlet 21; a front drive plate 32 is provided at the front end of the support base 3, and when the funnel 10 slides to the left, the front drive plate 32 drives the flip-top structure 5 to rotate, thus connecting the powder outlet 21 with the funnel 10; an extraction port 24 is provided on the right side of the mounting base 2, and an extraction head 22 is installed in the extraction port 24, which is driven by a power mechanism 8 to move up and down within the extraction port 24; an extraction water inlet 23 is provided on the back of the extraction head 22, and the extraction water inlet 23 is connected to the boiler; a sensing device 4 for sensing the position of the support base 3 is also provided in the mounting base 2.

[0031] like Figure 1 , Figure 2 , Figure 3 As shown: This coffee machine is equipped with a mounting base, and a bracket connects to the mounting base by sliding left and right. When the user installs the funnel containing coffee beans into the mounting slot of the bracket, the user can switch between functions by driving the funnel. When the funnel drives the bracket to slide to the left, the front drive plate at the front of the bracket is linked with the flip-top structure, causing the flip-top structure, which was originally covering the powder outlet, to rotate and open, thus connecting the powder outlet with the funnel and preparing for the subsequent grinding of coffee powder to fall into the funnel. When the funnel drives the bracket to slide to the right, the funnel slides to the right side below the extraction port, preparing for the extraction of coffee liquid. The power mechanism drives the extraction head to move up and down within the extraction port, tamping and extracting the coffee powder. An extraction water inlet is located on the back of the extraction head, which is connected to the boiler to ensure that high-temperature, high-pressure water is directly delivered to the extraction head, guaranteeing coffee quality. The sliding of the bracket allows for switching between grinding and extraction, enabling the funnel to perform multiple functions, reducing the number of parts and improving assembly efficiency. Furthermore, a sensor is installed inside the mounting base to detect the position of the support base, providing positional information for subsequent automated processes such as extraction and grinding, ensuring that the corresponding operations are performed in the correct position.

[0032] The sensing device 4 includes a water pump micro switch 41 and a grinding micro switch 42 mounted on the mounting base 2. A trigger rod 34 is provided on one side of the rear end of the bracket 3. When the funnel 10 slides to the left, the trigger rod 34 triggers the grinding micro switch 42; when the funnel 10 slides to the right, the trigger rod 34 triggers the water pump micro switch 41.

[0033] like Figure 2 , Figure 3As shown, the sensing device includes a water pump microswitch and a grinding microswitch. A trigger rod is located on one side of the rear of the support base to mechanically activate these two microswitches. When the user slides the funnel to the left, the trigger rod touches and activates the grinding microswitch, at which point the main control system receives the grinding command and begins grinding. When the user slides the funnel to the right, the trigger rod touches and activates the water pump microswitch, at which point the main control system receives the extraction command, the water pump starts, and hot water is delivered to the extraction head to extract the coffee grounds. By utilizing the left and right sliding of the funnel, the corresponding operation is only triggered when the funnel is in the correct position, effectively preventing users from operating in incorrect positions and improving the safety and stability of the coffee machine. Furthermore, the sensing device automates the grinding and extraction steps, significantly simplifying user operation and avoiding the tedious manual operation of starting the grinder and water pump, thus enhancing the equipment's automation and intelligence.

[0034] The flip-top structure 5 includes a hinge seat 51 and a rotating shaft 52 hinged therein. A flip-top 53 is provided on the inner side of the rotating shaft 52, and the flip-top 53 extends into the powder outlet 21, covering the powder outlet 21. A linkage plate 54 is installed on the rotating shaft 52, and the front drive plate 32 contacts the linkage plate 54, driving the rotating shaft 52 to rotate, thereby opening and closing the powder outlet 21.

[0035] like Figure 6 , Figure 10 As shown: The flip-top structure includes a hinge base and a rotating shaft hinged to the hinge base. A flip-top is located inside the rotating shaft, extending into the coffee powder outlet. When the flip-top is closed, it covers the outlet, effectively preventing dust and other contaminants from entering. A linkage plate is mounted on the rotating shaft. When the funnel moves to the left, the front drive plate of the support base contacts the linkage plate; at this time, the funnel continues to slide to the left, and the front drive plate continues to drive the linkage plate, thereby rotating the rotating shaft and turning the flip-top from the covered state to the open state, thus opening the coffee powder outlet. The flip-top structure allows for precise control of the opening and closing of the outlet, preventing accidental moisture or contamination of coffee powder when not grinding. Furthermore, the flip-top structure is controlled and driven by the funnel, requiring no additional user operation, achieving automatic opening before grinding and automatic closing after grinding, thus providing intelligent automation.

[0036] The rotating shaft 52 is fitted with a torsion spring 55, which drives the rotating shaft 52 to rotate, so that the flip cover 53 always covers the powder outlet 21 and closes it.

[0037] A torsion spring possesses elastic potential energy. Its design ensures it constantly applies a rotational force, driving the rotating shaft to rotate in a specific direction. This keeps the flip cover over the coffee outlet, thus closing it. When the front drive plate disengages from the linkage plate, and the front drive plate no longer applies the opening force, the torsion spring automatically resets the flip cover, ensuring the coffee outlet remains closed when not in operation. This effectively prevents coffee powder from splashing out, maintaining the cleanliness of the coffee machine's interior and ensuring coffee powder quality. Furthermore, as a mechanical reset component, the torsion spring is simple to manufacture, has low production costs, and its interconnected reset mechanism provides reliable and stable reset performance, is not easily damaged, and enhances production competitiveness.

[0038] A reset spring 6 is provided between the bracket base 3 and the mounting base 2. The reset spring 6 pulls the bracket base 3 to slide towards the extraction port 24.

[0039] A return spring is installed between the support base and the mounting base. The fixed end of the return spring is located on the mounting base, and its movable end is located on the support base, so that the support base always slides towards the extraction port. When the coffee machine finishes grinding, the main control system releases the lock on the support base, and the tension of the return spring automatically drives the support base to slide to the right, so that the funnel moves below the extraction port. The user does not need to push the funnel again, making the operation labor-saving and convenient. This automates the transition of the auxiliary equipment from grinding to extraction, improves the smoothness of the operation process, and provides a preload force for the positioning of the support base in the extraction position, which helps to ensure its accurate positioning.

[0040] A self-locking device 7 is provided between the bracket base 3 and the mounting base 2. The self-locking device 7 includes a cam 71 and a limiting rod 72 fitted therein. A push spring 73 is provided between the limiting rod 72 and the cam 71. The push spring 73 pushes the limiting rod 72 to extend outward elastically at all times. A rear drive plate 33 is provided at the rear end of the bracket base 3. The limiting rod 72 is snapped onto the rear drive plate 33, locking the bracket base 3 onto the powder outlet 21.

[0041] The self-locking device 7 also includes a rotary motor 74 connected to the shaft of the cam 71. The inner wall of the cam 71 is provided with a slide table 711. Correspondingly, the cylindrical surface of the limiting rod 72 is provided with a sliding groove 721. The slide table 711 is connected to the sliding groove 721. The rotary motor 74 drives the cam 71 to rotate, and the slide table 711 drives the limiting rod 72 to retract and separate from the rear drive plate 33, releasing the bracket seat 3.

[0042] like Figure 8 , Figure 9As shown: The self-locking device includes a cam and a limiting rod fitted inside it. A sliding groove is provided on the cylindrical surface of the limiting rod, and a sliding platform is provided on the inner wall of the cam, forming a connection between the sliding platform and the sliding groove. When the support seat slides to the powder outlet end of the grinding position, the push spring built into it pops out, causing the limiting rod to lock onto the rear drive plate, locking the support seat at the powder outlet. This prevents accidental movement during grinding due to vibration or other reasons, ensuring the stability and safety of the grinding process, further avoiding uneven grinding or powder spillage caused by shaking, and improving grinding quality.

[0043] Once grinding is complete, the rotary motor drives the cam to rotate, causing the slide to slide along the sliding groove. This retracts the limit rod, separating it from the rear drive plate and releasing the support seat. The support seat then slides to the right under the action of the return spring, automatically unlocking the device after grinding without requiring manual operation from the user, further enhancing automation and user experience. The rotary motor's drive on the cam allows for precise extension and retraction of the limit rod, ensuring smooth and reliable unlocking.

[0044] The cylindrical protrusion of the limiting rod 72 is provided with a guide platform 722, and the bottom of the mounting base 2 is provided with a guide groove. The guide platform 722 is locked in the guide groove, and the limiting rod 72 extends into the guide groove and slides back and forth.

[0045] To ensure the stability and smoothness of the limit rod during extension, retraction, and locking, a guide platform is provided on the cylindrical protrusion of the limit rod. Corresponding to the guide platform, a guide groove is formed at the bottom of the mounting base. The guide platform is engaged within this guide groove, forming a guiding structure for the limit rod. This restricts the limit rod to move only within a preset sliding path, effectively preventing deflection or jamming, ensuring precise sliding trajectory of the limit rod, avoiding friction and jamming, improving the reliability and lifespan of the self-locking device, and enhancing stability. Furthermore, the precise guiding structure reduces mutual wear between components, lowers malfunctions caused by poor sliding, improves assembly efficiency, and extends its service life.

[0046] The power mechanism 8 includes a piston cylinder 81, a piston head 82 installed inside the piston cylinder 81, and the piston head 82 is connected to the extraction head 22 through a piston rod 83. The piston head 82 isolates the piston cylinder 81 into a relatively sealed rod chamber 84 and a rodless chamber 85. The rodless chamber 85 is connected to a powder-pressing water pump through a water inlet 91.

[0047] A return spring 86 is also installed in the rod chamber 84, and the return spring 86 always pushes the piston head 82 toward the rodless chamber 85.

[0048] The power mechanism includes a piston cylinder and a piston head installed inside it. The piston head is connected to the extraction head through a piston rod, so that the up and down movement of the piston head can be directly transmitted to the extraction head to drive the extraction head to perform powder pressing and extraction operations.

[0049] Furthermore, the piston head isolates the piston cylinder into a relatively sealed rod chamber and a rodless chamber. A tamping pump is connected to the rodless chamber via an inlet. When the tamping pump starts, high-pressure water is injected into the rodless chamber through the inlet, pushing the piston head downwards to tamp the coffee grounds. This automatic tamping eliminates the need for manual tamping, ensuring uniform tamping force, reducing user workload, and improving extraction efficiency and coffee quality. When the tamping pump stops supplying water or the pressure inside the rodless chamber is released, the piston head returns to its original position under the elastic action of the return spring. This causes the connected extraction head to return upwards, preparing for the next tamping and extraction cycle. It also ensures that extracted coffee grounds can be easily removed, simplifying cleaning and maintenance of the extraction head and providing convenience for continuous or multiple coffee brewing operations, thus improving work efficiency. Secondly, the return spring, as a component of the reset structure, has a simple and reliable structure, low manufacturing cost, and is not easily damaged and has a long lifespan, resulting in a stable and ideal reset effect.

[0050] In summary: First, the user manually slides the stand along with the funnel to the left. When the funnel reaches the grinding position, the trigger lever at its rear end activates the micro-switch, initiating grinding. Simultaneously, the front drive plate at the front of the stand contacts the linkage plate of the flip-top structure, causing the shaft to rotate and opening the flip-top, ensuring that the ground coffee powder flows smoothly from the outlet into the funnel. When the funnel precisely reaches the grinding position, the limit lever in the self-locking device automatically engages with the rear drive plate at the rear of the stand under the action of a push spring, locking the stand in the grinding position and ensuring the stability and safety of the grinding process.

[0051] After grinding, the rotary motor drives the cam of the self-locking device to rotate, which in turn moves the limit rod inward via the slide table, separating it from the rear drive plate and releasing the support seat. Once released, the return spring installed between the support seat and the mounting base activates, automatically pulling the support seat to the right towards the extraction port. Under the action of the return spring, the support seat automatically slides into position below the extraction port. When the funnel slides to the extraction position, the trigger rod at its rear end triggers the water pump microswitch, starting the tamping pump. High-pressure water is injected into the rodless chamber of the power mechanism, pushing the piston head downward and causing the extraction head to move downward, automatically completing the tamping of the coffee grounds. After tamping, the extraction head remains in the downward position, and high-pressure hot water is delivered from the boiler to the extraction head through the extraction port, completing the coffee extraction process.

[0052] After extraction, the pressure in the rodless chamber is released, and the return spring in the rod chamber pushes the piston head upward, opening the water return path. The piston head, under the action of the return spring, moves upward, draining the water back into the tank and resetting the extraction head, preparing it for cleaning coffee grounds and the next use. The entire process allows users to manually move the funnel, automatically completing a series of complex actions such as grinding, opening and closing the coffee path, locking and unlocking the funnel, returning the funnel to its original position, automatic tamping, and extraction. This greatly saves user time, simplifies the "from bean to coffee" process to the extreme, and provides users with an unprecedentedly convenient, efficient, and intelligent coffee-making experience, thus making it widely applicable.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A coffee machine that integrates grinding and extraction, characterized in that: Includes a mounting base (2) located at the front end of the body (1), and a bracket base (3) slidably connected to the mounting base (2). The bracket base (3) is provided with a mounting groove (31), and the funnel (10) is detachably installed in the mounting groove (31). The mounting base (2) is provided with a powder outlet (21) on the left side, and a flip cover structure (5) is provided covering the powder outlet (21). The front end of the bracket base (3) is provided with a front drive plate (32). The funnel (10) slides to the left, and the front drive plate (32) drives the flip cover structure (5) to rotate, so that the powder outlet (21) and the funnel (10) are connected. An extraction port (24) is provided on the right side of the mounting base (2), and an extraction head (22) is installed inside the extraction port (24). The extraction head (22) is driven by a power mechanism (8) to move up and down inside the extraction port (24). An extraction water port (23) is provided on the back of the extraction head (22), and the extraction water port (23) is connected to the boiler. The mounting base (2) is also equipped with a sensing device (4) for sensing the position of the support base (3).

2. The coffee machine integrating grinding and extraction according to claim 1, characterized in that: The sensing device (4) includes a water pump micro switch (41) and a grinding micro switch (42) mounted on the mounting base (2). A trigger rod (34) is provided on one side of the rear end of the bracket (3). When the funnel (10) slides to the left, the trigger rod (34) triggers the grinding micro switch (42); when the funnel (10) slides to the right, the trigger rod (34) triggers the water pump micro switch (41).

3. The coffee machine integrating grinding and extraction according to claim 1, characterized in that: The flip-top structure (5) includes a hinge seat (51) and a rotating shaft (52) hinged therein. A flip-top (53) is provided on the inner side of the rotating shaft (52). The flip-top (53) extends into the powder outlet (21) and covers the powder outlet (21). A linkage plate (54) is installed on the rotating shaft (52). The front drive plate (32) contacts the linkage plate (54) and drives the rotating shaft (52) to rotate, thereby opening and closing the powder outlet (21).

4. The coffee machine integrating grinding and extraction according to claim 3, characterized in that: The rotating shaft (52) is fitted with a torsion spring (55), which drives the rotating shaft (52) to rotate, so that the flip cover (53) always covers the powder outlet (21) and closes it.

5. A coffee machine integrating grinding and extraction according to claim 1, characterized in that: A reset spring (6) is provided between the bracket (3) and the mounting base (2). The reset spring (6) pulls the bracket (3) to slide towards the extraction port (24) side.

6. A coffee machine integrating grinding and extraction according to claim 1, characterized in that: A self-locking device (7) is provided between the bracket (3) and the mounting base (2). The self-locking device (7) includes a cam (71) and a limiting rod (72) fitted therein. A push spring (73) is provided between the limiting rod (72) and the cam (71). The push spring (73) pushes the limiting rod (72) to always extend outward elastically. A rear drive plate (33) is provided at the rear end of the bracket (3). The limiting rod (72) is snapped onto the rear drive plate (33) to lock the bracket (3) onto the powder outlet (21).

7. A coffee machine integrating grinding and extraction according to claim 6, characterized in that: The self-locking device (7) further includes a rotary motor (74) connected to the shaft of the cam (71). The inner wall of the cam (71) is provided with a slide (711). Correspondingly, the cylindrical surface of the limiting rod (72) is provided with a sliding groove (721). The slide (711) is connected to the sliding groove (721). The rotary motor (74) drives the cam (71) to rotate. Through the slide (711), the limiting rod (72) is driven to retract and separate from the rear drive plate (33), releasing the support seat (3).

8. A coffee machine integrating grinding and extraction according to claim 6, characterized in that: The cylindrical protrusion of the limiting rod (72) is provided with a guide platform (722), and the bottom of the mounting base (2) is provided with a guide groove. The guide platform (722) is placed in the guide groove, and the limiting rod (72) extends into the guide groove and slides back and forth.

9. A coffee machine integrating grinding and extraction according to claim 1, characterized in that: The power mechanism (8) includes a piston cylinder (81), a piston head (82) is installed inside the piston cylinder (81), the piston head (82) is connected to the extraction head (22) through the piston rod (83), the piston head (82) isolates the piston cylinder (81) into a relatively sealed rod chamber (84) and a rodless chamber (85), and the rodless chamber (85) is connected to the powder pump through the water inlet (91).

10. A coffee machine integrating grinding and extraction according to claim 9, characterized in that: A return spring (86) is also installed in the rod chamber (84), and the return spring (86) always pushes the piston head (82) toward the rodless chamber (85).

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