Transmission structure of brewing mechanism of coffee machine

Abstract

The utility model discloses a transmission structure of a brewing mechanism of a coffee machine, the brewing mechanism is driven by a driving device to swing back and forth so as to complete brewing of coffee, the brewing mechanism comprises a brewing cup and a brewing cup support, a top plate and a transmission assembly are arranged in the brewing cup, and the input end of the transmission assembly is connected with the output end of the driving device. The output end of the transmission assembly comprises a rack, the top end of the rack is connected with the top plate, the rack is driven by the driving device to drive the top plate to move up and down in the brewing cup, and the rack is provided with a restraining part used for limiting unexpected movement of the rack when the brewing mechanism swings. The drag hook is arranged between the parallel racks connected with the transmission assembly and the top plate, the drag hook limits the movement of the parallel racks caused by the swing inertia effect of the brewing mechanism, the stability of the top plate is kept, meanwhile, the normal movement of the parallel racks driven by the transmission assembly is kept, the receiving and taking effects of coffee powder and the pushing-out effect of coffee grounds are guaranteed, and the service life of the coffee maker is prolonged. And the quality of coffee making is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, and specifically relates to a transmission structure of a brewing mechanism of a coffee machine. Background Technique

[0002] The transmission structure of the brewing mechanism of a coffee machine is a key part in the coffee machine that is responsible for transmitting power to the brewing components, ensuring that the coffee powder can be evenly and effectively compacted and extracted. The transmission structure of the brewing mechanism of a coffee machine generally includes the following main parts: a brewing mechanism, which provides support and fixation to ensure the stable operation of the transmission gears and other components; a brewing mechanism, which mixes hot water and coffee powder through rotational movement to achieve coffee extraction; a driving device, which provides power to drive the transmission gears and the brewing screw to work; a stroke control component, which ensures the accurate movement distance and position of the brewing screw; a central processing unit, which receives control signals and coordinates the work of each component to ensure the efficient operation of the coffee machine.

[0003] During the working process of the coffee machine, after the brewing mechanism picks up the coffee powder at the coffee powder picking position, it swings to the brewing position. The driving device transmits power to the brewing screw through the transmission gear, so that the brewing screw enters the brewing mechanism along the axis of the bracket and cooperates with the top plate therein, mixes hot water and coffee powder, and extracts the aroma and taste in the coffee powder through the power of high pressure and hot water to form delicious coffee liquid. After brewing is completed, the top plate pushes out the coffee dregs from the brewing mechanism to prepare for the next brewing, and the brewing mechanism also swings back and forth between the coffee powder picking position and the brewing position under the drive of the driving device to complete the repeated brewing of coffee.

[0004] The transmission structure of the brewing mechanism of a coffee machine is an indispensable part of the coffee machine. It not only affects the taste and quality of coffee, but also directly relates to the overall performance and service life of the coffee machine. Therefore, the transmission structure of the brewing mechanism of a coffee machine often adopts a compact design to adapt to the limited space inside the coffee machine, and injection molding is used to manufacture each component of the transmission structure. However, due to the errors in the design and manufacture of the mold, and the wear of the plastic components during use, when the fitting clearance of the components is large, the connecting components of the transmission structure with the top plate become loose, and the unexpected movement of the connecting components is caused by the inertial action of the swinging of the brewing mechanism, resulting in the top plate moving erratically and unable to maintain stability, affecting the picking of coffee powder and the pushing out of coffee dregs, and reducing the effect of coffee making. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a transmission structure for a brewing mechanism of a coffee machine, so as to solve the problems in the prior art that due to the errors in the design and manufacture of molds, as well as the wear of plastic parts during use, when the fitting clearance of parts is relatively large, the connecting parts of the transmission structure with the top plate become loose, and under the inertial action of the swinging of the brewing mechanism, unexpected movement of the connecting parts is caused, resulting in the top plate moving erratically and being unable to maintain stability, affecting the picking up of coffee powder and the pushing out of coffee grounds, and reducing the coffee making effect, so as to overcome the deficiencies of the prior art.

[0006] The present utility model provides a transmission structure for a brewing mechanism of a coffee machine through the following technical solutions, including a brewing mechanism and a driving device. The brewing mechanism swings reciprocally under the drive of the driving device to complete the brewing of coffee. The brewing mechanism includes a brewing cup, in which a top plate and a transmission assembly are provided. The input end of the transmission assembly is connected to the output end of the driving device, and the output end of the transmission assembly includes a rack. The top end of the rack is connected to the top plate, and the rack drives the top plate to move up and down in the brewing cup under the drive of the driving device. The rack is provided with a restraint member for restricting the unexpected movement of the rack when the brewing mechanism swings.

[0007] Further, the rack is a pair of parallel racks, and the restraint member is a hook provided at the bottom of the parallel racks.

[0008] Further, the hook includes an integrally formed hook body and a cantilever. The hook body is fixedly connected to the inner wall of the brewing cup, and the cantilevers are symmetrically located on the left and right sides of the hook body. The head of the cantilever is provided with a hook claw that cooperates with the rack.

[0009] Further, screw seats and mounting posts are provided on the inner wall of the brewing cup, and screw holes and mounting holes corresponding to the screw seats and the mounting posts are provided on the hook body.

[0010] Further, there are 2 mounting posts and 2 mounting holes respectively. The mounting posts are symmetrically located on the two sides below the screw seats, and the mounting holes are symmetrically located on the two sides of the lower part of the hook body.

[0011] The present utility model has the following beneficial effects: Hooks are provided between the parallel racks connecting the transmission assembly and the top plate. The hooks restrict the movement of the parallel racks caused by the inertial action of the swinging of the brewing mechanism, maintain the stability of the top plate, and at the same time maintain the normal movement of the parallel racks driven by the transmission assembly, ensuring the effect of picking up coffee powder and pushing out coffee grounds, and improving the quality of coffee making. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the overall schematic diagram of the transmission structure for a brewing mechanism of a coffee machine described in the present utility model.

[0013] Figure 2 This is an exploded view of the transmission structure of a brewing mechanism of a coffee machine according to the present utility model.

[0014] Figure 3 This is a schematic diagram of the internal structure of a brewing cup of the transmission structure of a brewing mechanism of a coffee machine according to the present utility model.

[0015] Among them, Figures 1 to 3 The corresponding relationship between the reference numerals and the component names in

[0016] 1 brewing mechanism, 2 driving device, 3 brewing mechanism, 11 brewing cup, 12 gear assembly, 13 top plate, 14 rack, 15 hook, 16 screw seat, 17 mounting post, 121 large gear, 122 first small gear, 123 second small gear, 124 third small gear, 151 hook body, 152 cantilever, 153 hook claw, 154 screw hole, 155 mounting hole. Detailed implementation manners

[0017] Next, the technical solutions of the present application will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present application.

[0018] Generally, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application that is required to be protected, but merely represents the selected embodiments of the present application.

[0019] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of the present application.

[0020] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0022] The following refers to Figures 1 - 3 Describe a transmission structure of a brewing mechanism of a coffee machine according to some embodiments of the present application.

[0023] The present utility model provides a transmission structure of a brewing mechanism of a coffee machine through the following technical solutions, including a brewing mechanism 1 and a driving device 2.

[0024] The brewing mechanism 1 cooperates with a grinding device (not shown in the figure) and a brewing mechanism 3 in the coffee machine to complete the production of coffee. Among them, the brewing mechanism 1 picks up coffee powder below the grinding device, and then swings below the brewing mechanism 3 driven by the driving device 2. The brewing mechanism 3 injects hot water into the coffee powder in the brewing structure 1 to complete the brewing of coffee. After brewing is completed, the brewing mechanism 1 swings back below the grinding device to start the next brewing. In this way, the brewing mechanism 1 swings back and forth to complete the continuous and repeated brewing of coffee.

[0025] In the technical solution of the present embodiment, the brewing mechanism 1 includes a brewing cup 11. A top plate 13 and a transmission assembly are provided in the brewing cup 11. The input end of the transmission assembly is connected to the output end of the driving device 2. The output end of the transmission assembly includes a rack 14. The top end of the rack 14 is connected to the top plate 13, and a constraint member is provided on the rack 14.

[0026] Specifically, the rack 14 is a pair of parallel racks, and the constraint member is a hook 15 provided at the bottom of the rack 14. The hook 15 includes an integrally formed hook body 151 and a cantilever 152. The hook body 151 is fixedly connected to the inner wall of the brewing cup 11. The cantilevers 152 are symmetrically located on the left and right sides of the hook body 151. A hook claw 153 is provided at the head of the cantilever 152, and the hook claw 153 is clamped in the tooth groove of the rack 14.

[0027] The transmission assembly further includes a gear assembly 12. The transmission assembly is all located in the lower part of the brewing cup 11, and a sealing structure is provided between the top plate 13 and the inner wall of the brewing cup 11 to prevent the coffee liquid above the top plate 13 from leaking.

[0028] The driving device 2 drives the gear assembly 12 to rotate. The teeth of the gear assembly 12 cooperate with the teeth of the rack 14. The rotation of the gear assembly 12 drives the rack 14 to move up and down relatively. The rack 14 drives the top plate 13 to move up and down synchronously. The downward movement of the top plate 13 is used to receive the coffee powder to be brewed into the brewing cup 11, and the upward movement of the top plate 13 is used to push out the brewed coffee grounds from the brewing cup 11.

[0029] At the beginning of brewing, after the brewing mechanism 1 picks up the coffee powder below the grinding device, the driving device 2 rotates clockwise to drive the brewing mechanism 1 to swing clockwise. During the swinging process, the gear assembly 12 does not rotate, and the rack 4 does not move under the restraint of the hook 15 until the brewing mechanism 1 reaches below the brewing mechanism 3 and starts to cooperate with the brewing mechanism 3 for coffee brewing; after brewing is completed, the driving device 2 continues to rotate clockwise. At this time, since the brewing mechanism 1 is restricted by the limiting structure and cannot swing clockwise anymore, the driving device 2 drives the gear assembly 12 to rotate. The gear assembly 12 drives the rack 4 and moves against the binding force of the hook 15 on the rack 4, thereby pushing the top plate 13 to rise and push out the coffee grounds in the brewing cup 11; after the top plate 13 rises to the slag discharging position, the driving device 2 changes to rotate counterclockwise to drive the brewing mechanism 1 to swing counterclockwise. During the swinging process, the gear assembly 12 does not rotate, and the rack 4 does not move either, so that the top plate 13 maintains the state of pushing out the coffee grounds. Thus, the coffee grounds fall out of the brewing cup 11 during the counterclockwise swinging process of the brewing mechanism 1 until the brewing mechanism 1 returns below the grinding device. At this time, since the brewing mechanism 1 is restricted by the limiting structure and cannot swing counterclockwise anymore, the driving device 2 drives the gear assembly 12 to rotate. The gear assembly 12 drives the rack 4 to retract the top plate 13 into the brewing cup 11 so as to facilitate receiving the coffee powder again, and the rack 4 is also connected and restricted by the hook 15 again to prevent the rack 4 from moving unexpectedly during the initial swinging process.

[0030] The swinging of the brewing mechanism 1 and the movement of the top plate 13 are both driven and completed by the driving device 2. The swinging of the brewing mechanism 1 and the movement of the top plate 13 are carried out alternately. That is, when the brewing mechanism 1 swings, the top plate 13 remains stationary in the brewing cup 11. And the stillness of the top plate 13 is achieved through the mutual engagement of the gear assembly 12 and the rack 14. However, due to the errors in the mold design and manufacturing and the wear during use, the gap between the teeth of the gear of the gear assembly 12 formed by plastic molding and the teeth of the rack 14 increases, and sufficient engagement cannot be achieved. When the brewing mechanism 1 swings, the gear of the gear assembly 12 is loose from the rack 14, causing the rack 14 to move unexpectedly, which in turn causes the connected top plate 13 to move up and down erratically. The top plate 13 cannot maintain its stability, which will inevitably affect the reception of the coffee powder and the pushing out of the coffee grounds.

[0031] The hook claw 153 is clamped in the tooth groove of the rack 14. The acting force on the movement of the rack 14 generated when the brewing mechanism 1 swings is not sufficient to overcome the clamping force of the hook claw 153 on the rack 14, so that the rack 14 is stably maintained in the current position, avoiding affecting the picking up of coffee powder and the pushing out of coffee grounds. And because the cantilever 152 is elastic, when the driving device 2 drives the rack 14 to move, its acting force causes the cantilever 152 to retract so that the hook claw 153 releases the clamping with the rack 14, enabling the rack 14 to move normally to complete the lifting and lowering of the top plate 13.

[0032] Specifically, the gear assembly 12 includes a large gear 121 fixed axially. Above the large gear 121, a first small gear 122, a second small gear 123, and a third small gear 124 fixed axially are connected in sequence. The second small gear 123 meshes with the teeth of the left rack 14, and the third small gear 124 meshes with the teeth of the right rack 14; the transmission shaft of the driving device 2 passes through the center of the large gear 121, and when the driving device 2 rotates, it can drive the large gear 121 to rotate coaxially and synchronously.

[0033] On the inner wall of the brewing cup 11, there are a screw seat 16 and a mounting post 17. On the hook body 151, there are screw holes 154 and mounting holes 155 corresponding to the screw seat 16 and the mounting post 17. Among them, there are 2 mounting posts 17 and 2 mounting holes 155 respectively. The mounting posts 17 are symmetrically located on both sides below the screw seat 16, and the mounting holes 155 are symmetrically located on both sides of the lower part of the hook body 151. Align the mounting holes 155 with the mounting posts 17 and insert them, and after aligning the screw holes 154 with the screw seat 16 and fixing with screws, the hook 15 can be stably installed in the brewing cup 11.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transmission structure of a coffee machine brewing mechanism, comprising a brewing mechanism and a driving device, wherein the brewing mechanism reciprocally swings driven by the driving device to complete the brewing of coffee. The brewing mechanism includes a brewing cup, characterized in that, The brewing cup is provided with a top plate and a transmission assembly. The input end of the transmission assembly is connected to the output end of the driving device. The output end of the transmission assembly includes a rack. The top end of the rack is connected to the top plate. The rack drives the top plate to move up and down in the brewing cup under the drive of the driving device. The rack is provided with a constraint component for restricting the unexpected movement of the rack when the brewing mechanism swings.

2. The transmission structure of a coffee machine brewing mechanism according to claim 1, characterized in that, The rack is a pair of parallel racks, and the constraint component is a hook provided at the bottom of the parallel racks.

3. The transmission structure of a coffee machine brewing mechanism according to claim 2, characterized in that, The hook includes an integrally formed hook body and a cantilever. The hook body is fixedly connected to the inner wall of the brewing cup. The cantilevers are symmetrically located on the left and right sides of the hook body. The head of the cantilever is provided with a hook claw that cooperates with the rack.

4. The transmission structure of a coffee machine brewing mechanism according to claim 3, characterized in that, The inner wall of the brewing cup is provided with a screw seat and a mounting post. The hook body is provided with screw holes and mounting holes corresponding to the screw seat and the mounting post.

5. The transmission structure of a coffee machine brewing mechanism according to claim 4, characterized in that, There are 2 mounting posts and 2 mounting holes respectively. The mounting posts are symmetrically located on the two sides below the screw seat, and the mounting holes are symmetrically located on the two sides of the lower part of the hook body.

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