Motor shaft core of coffee machine

Abstract

The utility model discloses a coffee machine motor shaft core, which comprises a first shaft core, a second shaft core and a third shaft core, the first shaft core is in a long strip shape, and a connecting key extending along the length direction of the first shaft core is formed on the outer surface of the first shaft core; the second shaft core is in a long strip shape, a center hole is formed in the end of the second shaft core, the center hole extends in the length direction of the second shaft core, and the center hole is matched with the first shaft core in an inserted mode. The size of the center hole is matched with that of the first shaft core so that the first shaft core can move in the center hole, and a key groove corresponding to the connecting key is formed in the inner wall of the center hole; the locking structure is used for locking and positioning the first shaft core and the second shaft core, and the use convenience can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machine transmission, in particular to a motor shaft core of a coffee machine. Background Art

[0002] A coffee machine is a device used to make coffee, usually consisting of a water tank, a water heater, a nozzle and a filter. Depending on the type, a coffee machine can make different kinds of coffee, such as drip coffee, espresso, American coffee, etc. With the improvement of people's living standards and for the convenience of coffee processing, people have invented fully automatic coffee machines. 全 An automatic coffee machine is a fully automatic coffee brewing machine that eliminates the need for manual operation. This type of coffee machine can grind, fill coffee and make coffee, and some can even add hot milk to make milk coffee. Therefore, the grinding process requires a motor to transmit the power of the motor to the coffee bean grinding mechanism through a transmission shaft. The transmission shaft of the coffee machine in the prior art is generally an integrated transmission shaft, which not only has a high processing cost, but also needs to be replaced as a whole once it is worn out during long-term use. In addition, since there are many models of coffee machines in reality, transmission shafts of different lengths need to be adapted. Utility Model Content

[0003] The utility model provides a coffee machine motor shaft core, which can improve the convenience of use.

[0004] In order to solve the above technical problems, the utility model provides a coffee machine motor shaft core, comprising:

[0005] A first shaft core, the first shaft core is in a long strip shape, and a connecting key extending along the length direction of the first shaft core is formed on the outer surface of the first shaft core;

[0006] A second shaft core, the second shaft core is in a long strip shape, a center hole is formed at the end of the second shaft core, the center hole extends along the length direction of the second shaft core, the center hole is inserted and matched with the first shaft core, the size of the center hole is matched with the first shaft core so that the first shaft core can move in the center hole, and a keyway corresponding to the connecting key is formed on the inner wall of the center hole;

[0007] The locking structure is used to lock and position the first shaft core and the second shaft core.

[0008] As a preferred embodiment of the above technical solution, the connecting key is a spline, and the keyway is a spline groove.

[0009] As a preferred embodiment of the above technical solution, a plurality of through grooves are formed on the outer wall of the second shaft core, a locking thread is formed on the outer surface of the second shaft core, and the locking structure includes a threaded sleeve, which is connected to the locking thread.

[0010] As a preferred embodiment of the above technical solution, an annular protrusion is formed on the outer surface of the second shaft core, the through groove extends to the annular protrusion to penetrate the annular protrusion, a first inclined surface is formed on the side of the annular protrusion facing the first shaft core, and a second inclined surface corresponding to the first inclined surface is formed on the side of the threaded sleeve.

[0011] As a preferred embodiment of the above technical solution, the through grooves are distributed in a ring array.

[0012] As a preferred embodiment of the above technical solution, the through grooves and the spline grooves are distributed in an alternating manner.

[0013] As a preferred embodiment of the above technical solution, the front section of the first shaft core is formed with an insertion head.

[0014] As a preferred embodiment of the above technical solution, the insertion head is in a conical shape.

[0015] As a preferred embodiment of the above technical solution, the annular protrusion is arranged at a preset end close to the second shaft core, and the preset end is an end of the second shaft core formed with a center hole.

[0016] As a preferred embodiment of the above technical solution, a first annular groove and a second annular groove are formed on the first shaft core, and the first annular groove and the second annular groove are respectively close to two ends of the first shaft core.

[0017] The utility model provides a coffee machine motor shaft core, which includes a first shaft core, a second shaft core and a locking structure. A connecting key extending along the length direction of the first shaft core is formed on the outer surface of the first shaft core, a center hole is formed at the end of the second shaft core, and a keyway corresponding to the connected key is formed on the inner wall of the center hole. The transmission connection between the first shaft core and the second shaft core is achieved by the cooperation of the connecting key and the keyway. Since it is assembled from the first shaft core and the second shaft core, it can be easy to process, and any part of the first shaft core and the second shaft core can be replaced when any wear occurs. In addition, since the first shaft core can move in the center hole, the length of the transmission shaft can be adjusted by the insertion depth, and then the first shaft core and the second shaft core are locked by the locking structure to prevent the first shaft core and the second shaft core from moving. Different models of coffee machines can be matched, thereby improving the convenience of use.

[0018] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional exploded schematic diagram of a motor shaft core of a coffee machine according to this embodiment is shown;

[0020] Figure 2 shows a schematic diagram of the three-dimensional structure of the first shaft core in this embodiment;

[0021] Figure 3 shows a schematic diagram of the three-dimensional structure of the second shaft core in this embodiment;

[0022] In the figure: 10, first shaft core; 20, second shaft core; 30, locking structure; 101, connecting key; 102, insertion head; 103, first annular groove; 104, second annular groove; 201, through groove; 202, annular protrusion; 203, locking thread; 204, first bevel; 205, center hole; 206, keyway; 301, second bevel. DETAILED DESCRIPTION

[0023] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 3 The utility model provides a coffee machine motor shaft core, comprising:

[0025] A first shaft core 10, which is in a long strip shape, and a connecting key 101 extending along the length direction of the first shaft core 10 is formed on the outer surface of the first shaft core 10;

[0026] The second shaft core 20 is in the shape of a long strip, and a center hole 205 is formed at the end of the second shaft core 20. The center hole 205 extends along the length direction of the second shaft core 20. The center hole 205 is inserted and matched with the first shaft core 10. The size of the center hole 205 matches the first shaft core 10 so that the first shaft core 10 can move in the center hole 205. A keyway 206 corresponding to the connecting key 101 is formed on the inner wall of the center hole 205;

[0027] The locking structure 30 is used to lock and position the first shaft core 10 and the second shaft core 20 .

[0028] The present embodiment provides a coffee machine motor shaft core, which includes a first shaft core 10, a second shaft core 20 and a locking structure 30. A connecting key 101 extending along the length direction of the first shaft core 10 is formed on the outer surface of the first shaft core 10, and a center hole 205 is formed at the end of the second shaft core 20. A key groove 206 corresponding to the connecting key 101 is formed on the inner wall of the center hole 205. The first shaft core 10 and the second shaft core 20 are connected to each other through the connection key 101 and the key groove 206. Since the first shaft core 10 and the second shaft core 20 are assembled, it can be easily processed, and any part of the first shaft core 10 and the second shaft core 20 can be replaced when any wear occurs. In addition, since the first shaft core 10 can move in the center hole 205, the length of the transmission shaft can be adjusted by the insertion depth, and then the first shaft core 10 and the second shaft core 20 are locked by the locking structure 30 to prevent the first shaft core 10 and the second shaft core 20 from moving. Different models of coffee machines can be matched, which improves the convenience of use.

[0029] In a further embodiment of the present invention, the keyway 206 is a spline groove.

[0030] In a further embodiment of the present invention, a plurality of through grooves 201 are formed on the outer wall of the second shaft core 20 , a locking thread 203 is formed on the outer surface of the second shaft core 20 , and the locking structure 30 includes a threaded sleeve connected to the locking thread 203 .

[0031] In a further feasible embodiment of the present embodiment, an annular protrusion 202 is formed on the outer surface of the second shaft core 20, the through groove 201 extends to the annular protrusion 202 to penetrate the annular protrusion 202, a first inclined surface 204 is formed on the side of the annular protrusion 202 facing the first shaft core 10, and a second inclined surface 301 corresponding to the first inclined surface 204 is formed on the side of the threaded sleeve.

[0032] The through groove 201 in this embodiment allows the center hole 205 to be retractable, which can reduce the assembly accuracy and make the first shaft core 10 and the second shaft core 20 more adaptable. In addition, in this embodiment, when tightening the threaded sleeve, the first bevel 204 and the second bevel 301 can be pressed against each other, thereby allowing the first shaft core 10 to be clamped in the center hole 205 and locked in place.

[0033] In a further possible implementation of this embodiment, the through slots 201 are distributed in a ring array.

[0034] In a further possible implementation of this embodiment, the through grooves 201 and the spline grooves 206 are distributed in a staggered manner.

[0035] In a further embodiment of the present invention, an insertion head 102 is formed at the front section of the first shaft core 10 .

[0036] In a further embodiment of the present invention, the insertion head 102 is in a conical shape.

[0037] In a further implementable embodiment of the present invention, the annular protrusion 202 is disposed at a preset end close to the second shaft core 20 , where the preset end is an end of the second shaft core 20 where the center hole 205 is formed.

[0038] In a further implementable embodiment of the present invention, a first annular groove 103 and a second annular groove 104 are formed on the first shaft core 10 , and the first annular groove 103 and the second annular groove 104 are respectively close to two ends of the first shaft core 10 .

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A coffee machine motor shaft core, characterized in that: include: A first shaft core, the first shaft core is in a long strip shape, and a connecting key extending along the length direction of the first shaft core is formed on the outer surface of the first shaft core; A second shaft core, the second shaft core is in a long strip shape, a center hole is formed at the end of the second shaft core, the center hole extends along the length direction of the second shaft core, the center hole is inserted and matched with the first shaft core, the size of the center hole is matched with the first shaft core so that the first shaft core can move in the center hole, and a keyway corresponding to the connecting key is formed on the inner wall of the center hole; The locking structure is used to lock and position the first shaft core and the second shaft core.

2. The coffee machine motor shaft core according to claim 1, characterized in that: The connecting key is a spline, and the keyway is a spline groove.

3. The coffee machine motor shaft core according to claim 2, characterized in that: A plurality of through grooves are formed on the outer wall of the second shaft core, a locking thread is formed on the outer surface of the second shaft core, and the locking structure includes a threaded sleeve, which is connected to the locking thread.

4. The coffee machine motor shaft core according to claim 3, characterized in that: An annular protrusion is formed on the outer surface of the second shaft core, the through groove extends to the annular protrusion to penetrate the annular protrusion, a first inclined surface is formed on the side of the annular protrusion facing the first shaft core, and a second inclined surface corresponding to the first inclined surface is formed on the side of the threaded sleeve.

5. The coffee machine motor shaft core according to claim 4, characterized in that: The through grooves are distributed in a ring array.

6. The coffee machine motor shaft core according to claim 5, characterized in that: The through grooves and the spline grooves are distributed in a staggered manner.

7. The coffee machine motor shaft core according to claim 1, characterized in that: The front section of the first shaft core is formed with an insertion head.

8. The coffee machine motor shaft core according to claim 7, characterized in that: The insertion head is in a conical shape.

9. The coffee machine motor shaft core according to claim 4, characterized in that: The annular protrusion is arranged at a preset end close to the second shaft core, and the preset end is an end of the second shaft core where a center hole is formed.

10. The coffee machine motor shaft core according to claim 1, characterized in that: A first annular groove and a second annular groove are formed on the first shaft core, and the first annular groove and the second annular groove are respectively close to two ends of the first shaft core.

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