Spiral water injection device

Abstract

The present invention provides a spiral water injection device, which includes a fixed seat, a rotating shaft tube, a motor, a carrier, a transmission gear set, a nut slider and a water injection hose. The rotating shaft tube is pivoted on the fixed seat. The motor is fixed on the fixed seat and meshes with the outer wall of the rotating shaft tube to link the rotating shaft tube. The carrier is connected to the rotating shaft tube and rotates in conjunction with the rotating shaft tube, and a first guide structure is provided on the carrier. The reciprocating screw is pivoted on the carrier, the reciprocating screw is perpendicular to the rotating shaft tube and parallel to the first guide structure, and the central axis of the reciprocating screw does not intersect with the central axis of the rotating shaft tube. The transmission gear set is connected between the rotating shaft tube and the reciprocating screw to link the rotating shaft tube to the reciprocating screw. The nut slider is sleeved and meshed with the reciprocating screw, and the nut slider has a water outlet pipe and a second guide structure attached to the first guide structure, and the water outlet pipe is parallel to the rotating shaft tube. The water injection hose is passed through the rotating shaft tube and connected to the water outlet pipe.

Description

Technical Field

[0001] The invention relates to a spiral water injection device, in particular to a spiral water injection device which injects water through a rotating shaft. Background Art

[0002] The spiral water injection device is mainly used in coffee brewing machines. It is used to simulate the spiral water injection action of hand-brewed coffee, and can maintain uniform brewing quality compared to manual brewing. The existing spiral water injection device generally drives a vertical rotating shaft to rotate by a motor. A carrier loaded with a water injection head is provided at the lower end of the rotating shaft. While the carrier rotates, the motor further drives the water injection head to move horizontally on the carrier, so that the water injection head can be driven to translate along a spiral path on a horizontal plane. However, the water injection head is generally driven by a screw and can translate on the carrier, and the screw intersects and is perpendicular to the axis of the rotating shaft. Therefore, if the water injection pipeline is connected from the top of the water injection head, it is very likely to interfere with the actuation of the mechanism. The current common water injection pipeline configuration is connected from the side of the water injection head from the bottom of the carrier. It is still easy to interfere with foreign objects when it is actuated. In addition, the structure of the water injection head is not a straight pipe and a locking structure needs to be set on it, so it is also difficult to process. Summary of the invention

[0003] The invention provides a spiral water injection device which takes in water through a rotating shaft.

[0004] The present invention provides a spiral water injection device, which includes a fixed seat, a rotating shaft tube, a motor, a carrier, a transmission gear set, a nut slider and a water injection hose. The rotating shaft tube is pivoted on the fixed seat. The motor is fixed on the fixed seat and meshes with the outer wall of the rotating shaft tube to link the rotating shaft tube. The carrier is connected to the rotating shaft tube and rotates in conjunction with the rotating shaft tube, and a first guide structure is provided on the carrier. The reciprocating screw is pivoted on the carrier, the reciprocating screw is perpendicular to the rotating shaft tube and parallel to the first guide structure, and the central axis of the reciprocating screw does not intersect with the central axis of the rotating shaft tube. The transmission gear set is connected between the rotating shaft tube and the reciprocating screw to link the rotating shaft tube to the reciprocating screw. The nut slider is sleeved and meshed with the reciprocating screw, and the nut slider has a water outlet pipe and a second guide structure attached to the first guide structure, and the water outlet pipe is parallel to the rotating shaft tube. The water injection hose is passed through the rotating shaft tube and connected to the water outlet pipe.

[0005] The spiral water injection device of the present invention comprises a transmission gear set including an annular bevel gear surrounding a rotating shaft tube, a spur gear coaxially connected to a reciprocating screw and a reduction gear, the reduction gear including an bevel gear end and a spur gear end coaxially arranged, the bevel gear end meshes with the annular bevel gear, and the spur gear end meshes with the spur gear. The outer side wall of the reciprocating screw is provided with a first screw groove and a second screw groove with opposite rotation directions and intersecting with each other.

[0006] The spiral water injection device of the present invention has a key bar in the nut slider for engaging with the reciprocating screw rod. The key bar is pivotally arranged in the nut slider and can deflect.

[0007] The spiral water injection device of the present invention has a carrier frame provided with a guide groove, and the water outlet pipe vertically penetrates the guide groove and can slide along the guide groove.

[0008] The spiral water injection device of the present invention has a guide channel perpendicular to the rotating shaft tube and parallel to the reciprocating screw rod, and the guide channel intersects with the central axis of the rotating shaft tube.

[0009] The first guide structure and the second guide structure of the spiral water injection device of the present invention can be planes respectively. Alternatively, the first guide structure is a rod body and the second guide structure is a channel.

[0010] When the spiral water injection device of the present invention is used, the reciprocating screw rod is arranged toward one side of the rotating shaft tube, so that the water injection hose can be inserted into the rotating shaft tube and extended into the carrier to connect to the water outlet pipe. Therefore, the water injection hose of the spiral water injection device of the present invention can be hidden inside, which is not only beautiful, but also will not interfere with foreign objects when the water outlet pipe moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 and Figure 2 It is a three-dimensional schematic diagram of the spiral water injection device according to the first embodiment of the present invention.

[0012] Figure 3 and Figure 4 They are respectively a three-dimensional exploded schematic diagram and a cross-sectional view of the spiral water injection device according to the first embodiment of the present invention.

[0013] Figure 5 and Figure 6 They are respectively a sectional view and a side view of a spiral water injection device according to a first embodiment of the present invention.

[0014] Figure 7 It is a schematic diagram of another form of the spiral water injection device of the first embodiment of the present invention.

[0015] Figure 8 It is a three-dimensional schematic diagram of a spiral water injection device according to a second embodiment of the present invention.

[0016] In the figure:

[0017] 100: fixed seat; 200: rotating shaft tube; 210: annular spur gear; 300: motor; 400: carrier; 401 / 401a: first guide structure; 402: guide channel; 500: reciprocating screw; 510: first screw groove; 520: second screw groove; 600: transmission gear set; 610: annular bevel gear ； 620: Spur gear ；630 reduction gear ； 631: Bevel tooth end ； 632: spur tooth end; 700: nut slider; 701 / 701a: second guide structure; 710: water outlet pipe; 720: key strip; 800: water injection hose. DETAILED DESCRIPTION

[0018] See also Figures 1 to 6 The first embodiment of the present invention provides a spiral water injection device, which includes a fixed seat 100, a rotating shaft tube 200, a motor 300, a carrier 400, a transmission gear set 600, a nut slider 700 and a water injection hose 800.

[0019] The rotating shaft tube 200 is pivoted on the fixed seat 100. The motor 300 is fixed on the fixed seat 100 and engages with the annular spur gear 210 on the outer wall of the rotating shaft tube 200 to link the rotating shaft tube 200. The carrier 400 is connected to the rotating shaft tube 200 and rotates in conjunction with the rotating shaft tube 200. A first guide structure 401 is provided on the carrier 400. The reciprocating screw 500 is pivoted on the carrier 400, and the reciprocating screw 500 is perpendicular to the rotating shaft tube 200 and parallel to the first guide structure 401. The reciprocating screw 500 is arranged to one side of the rotating shaft tube 200, so the central axis of the reciprocating screw 500 does not intersect with the central axis of the rotating shaft tube 200.

[0020] The transmission gear set 600 is connected between the rotating shaft tube 200 and the reciprocating screw 500 so that the rotating shaft tube 200 drives the reciprocating screw 500. Specifically, the transmission gear set 600 includes an annular bevel gear 610 surrounding the rotating shaft tube 200, a spur gear 620 coaxially connected to the reciprocating screw 500, and a reduction gear 630. The reduction gear 630 includes a coaxially arranged bevel gear end 631 and a spur gear end 632. The bevel gear end 631 meshes with the annular bevel gear 610, and the spur gear end 632 meshes with the spur gear 620. The outer wall of the reciprocating screw 500 is provided with a first screw groove 510 and a second screw groove 520 having opposite rotation directions and intersecting with each other.

[0021] The nut slider 700 is sleeved and engaged with the reciprocating screw 500. Specifically, a key bar 720 engaging the reciprocating screw 500 is provided in the nut slider 700. The key bar 720 is pivoted in the nut slider 700 and can swing to engage the first screw groove 510 or the second screw groove 520. The first guide structure 401 and the second guide structure 701 respectively form a plane or a curved surface that is attached to each other and can slide relative to each other. In this embodiment, the first guide structure 401 and the second guide structure 701 respectively form a plane or a curved surface that is attached to each other and can slide relative to each other. The first guide structure 401 forms the inner top surface of the carrier 400, and the second guide structure 701 forms the outer top surface of the nut slider 700 and is attached to the inner top surface of the carrier 400. The reciprocating screw 500 is perpendicular to the rotating shaft tube 200 and parallel to the inner top surface of the carrier 400. The first guide structure 401 and the second guide structure 701 are attached to each other and can prevent the reciprocating screw 500 from driving the nut slider 700 to rotate, so that the key bar 720 can move along the first screw groove 510 or the second screw groove 520 and further push the nut slider 700 back and forth along the longitudinal direction of the reciprocating screw 500.

[0022] The nut slider 700 has a water outlet pipe 710 and a second guide structure 701 attached to the first guide structure 401, and the water outlet pipe 710 is parallel to the rotating shaft tube 200. The carrier 400 is provided with a guide channel 402, and the water outlet pipe 710 vertically penetrates the guide channel 402 and can slide along the guide channel 402. Its guide channel 402 is perpendicular to the rotating shaft tube 200 and parallel to the reciprocating screw 500. The guide channel 402 intersects with the central axis of the rotating shaft tube 200. When the nut moves, it can drive the water outlet pipe 710 to reciprocate along the radial direction of the rotating shaft tube 200.

[0023] When the spiral water injection device of the present invention is used, its motor 300 drives the carrier 400 to rotate with the rotating shaft tube 200 as the central axis, and at the same time further drives the reciprocating screw 500 through the transmission gear set 600 to reciprocate and linearly move the water outlet pipe 710 along the radial direction of the rotating shaft tube 200, thereby allowing the water outlet pipe 710 to translate along the spiral path in the horizontal direction. Through the above-mentioned structural configuration, the reciprocating screw 500 is configured to be biased to one side of the rotating shaft tube 200, so that the water injection hose 800 can be inserted into the rotating shaft tube 200 and extend into the carrier 400 to connect the water outlet pipe 710. Therefore, the water injection hose 800 of the spiral water injection device of the present invention can be hidden inside, which is not only beautiful, but also will not interfere with foreign objects when the water outlet pipe 710 moves. In this embodiment, the water outlet pipe 710 is preferably pivoted on the nut slider 700 to rotate along its central axis, so that when the water outlet pipe 710 translates, it can be allowed to rotate to avoid twisting the water injection hose 800.

[0024] See also Figure 7Another embodiment of the first guide structure 401 and the second guide structure 701 is shown, the first guide structure 401 and the second guide structure 701 respectively form a plane or a curved surface that is attached to each other and can slide relative to each other. The first guide structure 401 can form the inner side of the carrier 400, and the second guide structure 701 forms the outer side of the nut slider 700 and is attached to the inner side of the carrier 400. The reciprocating screw 500 is perpendicular to the rotating shaft tube 200 and parallel to the inner side of the carrier 400. The first guide structure 401 and the second guide structure 701 are attached to each other and can prevent the reciprocating screw 500 from driving the nut slider 700 to rotate, thereby allowing the key bar 720 to move along the first screw groove 510 or the second screw groove 520 and further reciprocate the nut slider 700 along the longitudinal direction of the reciprocating screw 500.

[0025] See also Figure 8 The second embodiment of the present invention provides a spiral water injection device, which includes a fixed seat 100, a rotating shaft tube 200, a motor 300, a carrier 400, a transmission gear set 600, a nut slider 700 and a water injection hose 800. This embodiment is roughly the same as the first embodiment described above. The difference between this embodiment and the first embodiment is that its first guide structure 401a is a rod body, and the second guide structure 701a is a corresponding channel. The first guide structure 401a can be movably inserted into the second guide structure 701a and the outer wall surface of the rod body is attached to the inner wall surface of the channel. The reciprocating screw 500 is perpendicular to the rotating shaft tube 200 and parallel to the rod body. The first guide structure 401a and the second guide structure 701a are attached to each other and can prevent the reciprocating screw 500 from driving the nut slider 700 to rotate, so that the key bar 720 can move along the first screw groove 510 or the second screw groove 520 and further push the nut slider 700 back and forth along the longitudinal direction of the reciprocating screw 500.

[0026] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A spiral water injection device, characterized in that: Include: A fixed seat; A rotating shaft tube, pivotally mounted on the fixed seat; A motor is fixed to the fixing seat and engages with the outer wall of the rotating shaft tube to drive the rotating shaft tube; A carrier, connected to the rotating shaft tube and rotated in conjunction with the rotating shaft tube, and a first guide structure is disposed on the carrier; a reciprocating screw rod pivotally mounted on the carrier, the reciprocating screw rod being perpendicular to the rotating shaft tube and parallel to the first guide structure, and the central axis of the reciprocating screw rod does not intersect with the central axis of the rotating shaft tube; A transmission gear set connected between the rotating shaft tube and the reciprocating screw rod so that the rotating shaft tube drives the reciprocating screw rod; a nut slider, sleeved and meshed with the reciprocating screw, the nut slider having a water outlet pipe and a second guide structure attached to the first guide structure, and the water outlet pipe is parallel to the rotating shaft tube; and A water injection hose is inserted into the rotating shaft tube and connected to the water outlet pipe.

2. The spiral water injection device according to claim 1, characterized in that: The transmission gear set includes an annular bevel gear surrounding the rotating shaft tube, a spur gear coaxially connected to the reciprocating screw, and a reduction gear. The reduction gear includes a coaxially configured bevel gear end and a spur gear end. The bevel gear end meshes with the annular bevel gear, and the spur gear end meshes with the spur gear.

3. The spiral water injection device according to claim 1, characterized in that: The outer side wall of the reciprocating screw rod is provided with a first screw groove and a second screw groove which are in opposite rotation directions and intersect with each other.

4. The spiral water injection device according to claim 1, characterized in that: A key bar is arranged in the nut slider to engage with the reciprocating screw.

5. The spiral water injection device according to claim 4, characterized in that: The key bar is pivotally arranged in the nut slider and is capable of deflection.

6. The spiral water injection device according to claim 1, characterized in that: The carrier is provided with a guide channel, and the water outlet pipe vertically penetrates the guide channel and can slide along the guide channel.

7. The spiral water injection device according to claim 6, characterized in that: The guide channel is perpendicular to the rotating shaft tube and parallel to the reciprocating screw.

8. The spiral water injection device according to claim 7, characterized in that: The guide channel intersects with the central axis of the rotating shaft tube.

9. The spiral water injection device according to claim 1, characterized in that: The first guiding structure and the second guiding structure are respectively planes.

10. The spiral water injection device according to claim 1, characterized in that: The first guiding structure is a rod body, and the second guiding structure is a hole.

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