Gearbox with telescopic output shaft and juicer adopting gearbox

Abstract

The utility model discloses a gearbox with a telescopic output shaft and a juicer adopting the gearbox. Belongs to the technical field of juicers. According to the technical scheme, the gearbox comprises a box body, an input receding hole and an output receding hole are formed in the two ends of the box body respectively, a reduction gear assembly is arranged in the box body, the input end of the reduction gear assembly is connected with an output shaft of an external motor, an output shaft cover is arranged on the part, on the periphery of the output receding hole, of the box body, and an output shaft movably penetrates through the output shaft cover in the axial direction; the speed reduction gear assembly comprises a speed reduction support, and a cylindrical polygonal first connecting hole matched with the lower end of the output shaft is formed in the speed reduction support. A positioning ring is integrally formed on the output shaft in the output shaft cover; a reset spring is sleeved on the output shaft between the positioning ring and the upper end of the box body; the gearbox with the telescopic output shaft and the juicer with the gearbox are compact in structure, simple in appearance and good in using effect. The juicer is used for juicing.

Description

Technical Field

[0001] The utility model relates to a gearbox, more specifically, to a gearbox with a retractable output shaft. The utility model also relates to a juicer using the gearbox. Background Art

[0002] Juicers generally include a squeeze cup, a filter assembly, and a screw. In the prior art, the screw shaft needs to pass through the bottom of the squeeze cup and connect to the output shaft of the gearbox on the base to achieve linkage. This structure has the following two main problems: First, during assembly, the screw shaft and the output shaft of the gearbox may not be aligned, and the shaft needs to be fine-tuned to achieve correct assembly; second, a leak-proof sealing ring is provided at the contact portion between the screw shaft and the squeeze cup. To ensure sealing, the sealing ring and the screw shaft are interference-connected, which requires pressing down hard during installation, and the screw needs to be pushed upward from the outer bottom of the squeeze cup during disassembly and cleaning, which is more troublesome to operate.

[0003] The applicant previously adopted a split correction structure to solve the problem of manually correcting the alignment of the screw shaft and the gearbox output shaft. However, in actual use, it was found that although this structure can solve the above-mentioned deficiencies of the prior art, the split structure has the disadvantages of a relatively complex correction structure and high manufacturing and assembly costs. Utility Model Content

[0004] The first object of the utility model is to provide a gearbox with a retractable output shaft which has a compact structure, a simple appearance and good use effect in view of the above-mentioned deficiencies in the prior art.

[0005] The latter object of the utility model is to provide a juicer using the above-mentioned gearbox.

[0006] The previous technical solution of the utility model is implemented as follows: a gearbox with a retractable output shaft includes a box body, an input clearance hole and an output clearance hole are respectively arranged at both ends of the box body, a reduction gear assembly is arranged in the box body, and the input end of the reduction gear assembly is connected to the output shaft of an external motor, and is characterized in that an output shaft cover is arranged on the box body outside the output clearance hole, and the output shaft is movably penetrated on the output shaft cover along the axial direction.

[0007] The reduction gear assembly includes a last-stage reduction bracket located below the output clearance hole, on which a first polygonal connecting hole in a cylindrical shape and matching with the lower end of the output shaft is provided, and the output shaft passes through the output clearance hole and is movably connected with the first polygonal connecting hole.

[0008] A positioning ring is integrally formed on the output shaft in the output shaft cover, and a return spring is sleeved on the output shaft between the positioning ring and the upper end of the box body.

[0009] In the initial state, the output shaft is in an extended state under the elastic force of the reset spring. When the output shaft is not aligned with the external screw shaft, the output shaft squeezes the reset spring and is in a contracted state. When the external motor works to drive the output shaft to rotate until it is correctly aligned with the external screw shaft, the elastic force of the reset spring drives the output shaft to extend and connect with the external screw shaft.

[0010] In the above-mentioned gearbox with a retractable output shaft, the last-stage reduction bracket includes a turntable, a connecting column matching the hole in the gear of each last stage is arranged at the bottom of the turntable, and a connecting ring is integrally formed at the top of the turntable. The inner hole of the connecting ring is polygonal, and the connecting ring and the turntable cooperate to form a single-sided open cylindrical shape; the output shaft is movably inserted in the connecting ring.

[0011] In the above-mentioned gearbox with a telescopic output shaft, an oil-containing bearing is arranged between the outer wall of the connecting ring and the interior of the box body.

[0012] In the above-mentioned gearbox with a retractable output shaft, the box body is composed of a bottom cover that cooperates with each other and an outer shell with a single side open; a boss that protrudes outward and cooperates with a connecting ring is integrally formed at the bottom of the outer shell; in the assembled state, the connecting ring is located in the boss.

[0013] The latter technical solution of the utility model is implemented as follows: a juicer using the above-mentioned gearbox includes a base and a cup body detachably connected to the base, a juicer head is arranged in the cup body, a motor is arranged in the base, and the motor output shaft is connected to the input end of the gearbox; a rotating shaft is axially fixed in the juicer head, a second connecting hole in the shape of a regular polygon is axially arranged at the lower end of the rotating shaft, a connecting head matching the second connecting hole is formed at the upper end of the output shaft, and the rotating shaft and the output shaft are detachably connected through the second connecting hole and the connecting head.

[0014] After the utility model adopts the above structure, the output shaft cover, the return spring and the last-stage reduction bracket cooperate to realize the movable installation of the original fixed output shaft, so that the output shaft can be adaptively telescopically movable on the reduction bracket, thereby realizing automatic correction and alignment of the gearbox output shaft and the screw shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below in conjunction with the embodiments in the accompanying drawings, but this does not constitute any limitation to the present invention.

[0016] Figure 1 It is a schematic diagram of the exploded structure of the reduction box of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the reduction box of the utility model;

[0018] Figure 3It is a structural schematic diagram of the utility model juice machine.

[0019] In the figure: 1, box body; 1a, bottom cover; 1b, outer shell; 1c, boss; 2, reduction gear assembly; 3, output shaft cover; 4, output shaft; 4a, positioning ring; 5, reduction bracket; 5a, first connecting hole; 5b, turntable; 5c, connecting column; 5d, connecting ring; 6, reset spring; 7, oil-containing bearing; 8, base; 9, cup body; 10, juicer head; 11, motor; 12, rotating shaft; 12a, second connecting hole. DETAILED DESCRIPTION

[0020] See also Figure 1 and Figure 2 As shown, a gearbox with a retractable output shaft of the utility model comprises a box body 1, an input clearance hole and an output clearance hole are respectively arranged at both ends of the box body 1, a reduction gear assembly 2 is arranged in the box body 1, and the input end of the reduction gear assembly 2 is connected to the output shaft of an external motor.

[0021] An output shaft cover 3 is arranged on the box body 1 outside the output clearance hole, and an output shaft 4 is movably penetrated in the axial direction on the output shaft cover 3;

[0022] The reduction gear assembly 2 includes a last-stage reduction bracket 5 located at the lower side of the output clearance hole, and a polygonal first connecting hole 5a is provided on the reduction bracket 5, which is cylindrical and matches the lower end of the output shaft 4. The output shaft 4 passes through the output clearance hole and is movably connected with the polygonal first connecting hole 5a.

[0023] A positioning ring 4 a is integrally formed on the output shaft 4 in the output shaft cover 3 , and a return spring 6 is sleeved on the output shaft 4 between the positioning ring 4 a and the upper end of the housing 1 .

[0024] In the initial state, the output shaft 4 is in an extended state under the elastic force of the return spring 6. When the output shaft 4 is not aligned with the external screw shaft, the output shaft 4 squeezes the return spring 6 and is in a contracted state. When the external motor works to drive the output shaft 4 to rotate until it is correctly aligned with the external screw shaft, the elastic force of the return spring 6 drives the output shaft 4 to extend and connect with the external screw shaft.

[0025] In this embodiment, the last stage reduction bracket 5 includes a rotating disk 5b, a connecting column 5c matching the hole in each gear of the last stage is arranged at the bottom of the rotating disk 5b, and a connecting ring 5d is integrally formed on the top of the rotating disk 5b. The inner hole of the connecting ring 5d is polygonal, and the connecting ring 5d and the rotating disk 5b are matched to form a single-side open cylinder; the output shaft 4 is movably inserted in the connecting ring 5d. The inner hole of the connecting ring is deep, so that the output shaft has sufficient axial telescopic travel. The specific height of the inner hole of the connecting ring can be set according to specific needs, which is easy for those skilled in the art to think of.

[0026] Preferably, an oil bearing 7 is provided between the outer wall of the connecting ring 5d and the interior of the housing 1. By providing the oil bearing, the stability of the output shaft can be further improved to prevent its radial swing. Of course, the oil bearing can also be replaced by other conventional bearings in the art, which is easy for those skilled in the art to think of.

[0027] In this embodiment, the housing 1 is composed of a bottom cover 1a and a single-side open shell 1b that cooperate with each other; a boss 1c that protrudes outward and cooperates with the connecting ring 5d is integrally formed at the bottom of the shell 1b; in the assembled state, the connecting ring 5d is located in the boss 1c. The integrally formed structure of the shell can provide a more stable installation space for the reduction gear assembly, making the output shaft work more stably.

[0028] See also Figure 3 As shown, a juicer adopting the above-mentioned gearbox of the utility model comprises a base 8 and a cup body 9 detachably connected to the base 8, a juice extraction head 10 is arranged in the cup body 9, a motor 11 is arranged in the base 8, and the output shaft of the motor 11 is connected to the input end of the gearbox; a rotating shaft 12 is axially fixed in the juice extraction head 10, a second connecting hole 12a of a regular polygon is axially arranged at the lower end of the rotating shaft 12, a connecting head matched with the second connecting hole 12a is formed at the upper end of the output shaft 4, and the rotating shaft 12 and the output shaft 4 are detachably connected through the second connecting hole 12a and the connecting head.

[0029] When in use, when the connector on the upper end of the output shaft is not aligned with the second connecting hole, the output shaft shrinks along the axial direction, so that the cup body and the base are assembled normally, so that the machine can be started normally. After starting the motor, the output shaft rotates, and when it rotates to the correct alignment with the second connecting hole, it extends into the second connecting hole under the action of the reset spring, and the output shaft completes the alignment connection with the rotating shaft, so that the motor power is normally transmitted to the juicer head.

[0030] The above embodiments are preferred implementation modes of the present invention and are only used to facilitate the explanation of the present invention. They are not intended to limit the present invention in any form. Any person with ordinary knowledge in the relevant technical field, if they do not depart from the scope of the technical features of the present invention, can make equivalent embodiments by partial changes or modifications to the technical contents disclosed in the present invention, and they still fall within the scope of the technical features of the present invention without departing from the technical features of the present invention.

Claims

1. A gearbox with a retractable output shaft, comprising a housing (1), an input clearance hole and an output clearance hole are respectively arranged at both ends of the housing (1), a reduction gear assembly (2) is arranged in the housing (1), and the input end of the reduction gear assembly (2) is connected to the output shaft of an external motor, It is characterized in that An output shaft cover (3) is provided on the box body (1) outside the output clearance hole, and an output shaft (4) is movably inserted into the output shaft cover (3) in the axial direction; The reduction gear assembly (2) comprises a last-stage reduction bracket (5) located below the output clearance hole, the reduction bracket (5) being provided with a cylindrical first polygonal connecting hole (5a) matching with the lower end of the output shaft (4), the output shaft (4) passing through the output clearance hole and being movably connected with the polygonal first connecting hole (5a); A positioning ring (4a) is integrally formed on the output shaft (4) inside the output shaft cover (3), and a return spring (6) is sleeved on the output shaft (4) between the positioning ring (4a) and the upper end of the housing (1); In the initial state, the output shaft (4) is in an extended state under the elastic force of the return spring (6); when the output shaft (4) is not aligned with the external screw shaft, the output shaft (4) squeezes the return spring (6) and is in a contracted state; when the external motor drives the output shaft (4) to rotate until it is correctly aligned with the external screw shaft, the elastic force of the return spring (6) drives the output shaft (4) to extend and connect with the external screw shaft.

2. A gearbox with a retractable output shaft according to claim 1, characterized in that: The last stage speed reduction bracket (5) comprises a rotating disk (5b), a connecting column (5c) matched with the hole in the gear of each last stage is arranged at the bottom of the rotating disk (5b), a connecting ring (5d) is integrally formed on the top of the rotating disk (5b), the inner hole of the connecting ring (5d) is polygonal, and the connecting ring (5d) and the rotating disk (5b) are matched to form a single-side open cylindrical shape; the output shaft (4) is movably inserted in the connecting ring (5d).

3. A gearbox with a retractable output shaft according to claim 2, characterized in that: An oil-containing bearing (7) is arranged between the outer wall of the connecting ring (5d) and the interior of the box body (1).

4. A gearbox with a retractable output shaft according to claim 2, characterized in that: The box body (1) is composed of a bottom cover (1a) and an outer shell (1b) which are mutually matched. A boss (1c) which is outwardly protruding and matched with a connecting ring (5d) is integrally formed at the bottom of the outer shell (1b). In the assembled state, the connecting ring (5d) is located inside the boss (1c).

5. A juicer using the gearbox according to any one of claims 1 to 4, comprising a base (8) and a cup body (9) detachably connected to the base (8), a juice extraction head (10) being arranged in the cup body (9), and a motor (11) being arranged in the base (8), characterized in that: The output shaft of the motor (11) is connected to the input end of the gearbox; a rotating shaft (12) is fixed in the axial direction inside the juice extraction head (10); a second connecting hole (12a) in the shape of a regular polygon is arranged in the axial direction at the lower end of the rotating shaft (12); a connecting head matching the second connecting hole (12a) is formed at the upper end of the output shaft (4); the rotating shaft (12) and the output shaft (4) are detachably connected through the second connecting hole (12a) and the connecting head.

Images