Sliding safety linkage device applied to food processor

Abstract

The utility model relates to a sliding safety linkage device applied to a food processor, which comprises a feeding barrel for placing a pushing rod, a transmission rod placed on the feeding barrel, a first safety rod connected with the transmission rod, a second safety rod tightly attached to the lower end of the first safety rod, a spring limiting seat arranged on the first safety rod and used for placing a first pressure spring, and a sliding rod arranged on the spring limiting seat. A third safety rod is tightly attached to the lower end of the second safety rod, a second compressed spring is placed at the bottom end of the second safety rod, a protruding point is arranged on the third safety rod, when a pushing rod of the food processor is pressed downwards, the transmission rod is pressed downwards, the protruding point can control on and off of a microswitch through force transmission, and the microswitch is electrically connected with a control board card of the food processor. And linkage interlocking of the food processor is formed. The novel mechanical structure is low in production cost, can not be out of control due to interference of an external magnetic field, and is good in reliability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the manufacturing technical field of food processing equipment, especially to a safety linkage device with sliding function applied to a food processor. BACKGROUND

[0002] Food processor is a kind of kitchen appliance, similar to blender, with more optional blades to process solid, semi-solid food and vegetables into various shapes, such as slices, strips, blocks, paste and dough, etc., and can also be used to grind nuts, meat and dried fruits, etc.

[0003] Food processor is generally composed of a base, a cup body, a feeding tube and a pushing rod, etc. The food processor realizes the stirring function by rotating the cutter in the cup body driven by the motor in the base.

[0004] CE safety standards (EMC directive and LVD directive) require that household appliances (such as food processor, food processing machine, coffee machine, etc.) have a lid interlock safety mode, when the lid (pushing rod) is not placed or locked in place correctly, the device will not start or run, to prevent injury or damage to the device caused by improper operation. Therefore, according to the CE safety standards, it is necessary to make necessary improvements to the food processor.

[0005] Patent No. 201680022331.2, "Interlock mixing system" of American Vita Mix Management LLC, discloses a technical solution of "an interlock mixing system, comprising: a base including a motor, a first set of induction coils, and one or more sensors; and a container including a second set of induction coils and two or more switches, the second set of induction coils being selectively inductively coupled with the first set of induction coils when the second set of induction coils is operably positioned on top of the first set of induction coils, the two or more switches being spaced apart around a perimeter of the container; a lid operably attachable to the container and including one or more coils disposed in a body of the lid; wherein a status of the container and / or the lid is determined based on changes in electrical properties of the first set of induction coils and / or the second set of induction coils monitored by the one or more sensors, the base selectively permitting operation of the motor based on the determined status of the lid and / or the container when the container is operably positioned on top of the base and the two or more switches operably detect a lid attached to the container", which solves the technical problem of "when the cup cover is not placed or locked in place correctly, the device will not start or run".

[0006] However, the coils and other components are relatively high in production cost, or sometimes out of control due to external magnetic field interference, and there is room for further improvement. SUMMARY

[0007] The utility model discloses a kind of sliding safety linkage devices applied to food processor, to solve the problems presented in the above background art.

[0008] To solve the above technical problems, the utility model is realized by the following technical measures: a kind of sliding safety linkage devices applied to food processor, including the feeding cylinder for placing push rod, it is characterized by: the feeding cylinder is placed with transmission rod, the first safety rod is movably connected with the transmission rod, the second safety rod is tightly attached to the lower end of the first safety rod, the spring limit seat of placing first compression spring is arranged on the first safety rod, the third safety rod is tightly attached to the lower end of the second safety rod, the second compression spring is placed in the bottom end of the second safety rod, the convex point is arranged on the third safety rod, when the push rod of food processor is pressed down, the transmission rod is pressed down, after force transmission, the convex point can control the opening and closing of micro switch;The micro switch is electrically connected with the control board card of food processor, forms linkage interlock to food processor.

[0009] Compared with prior art, the utility model has the advantages that: by increasing safety linkage device, when the push rod of food processor is pressed down, the transmission rod is pressed down, after force transmission, the convex point can control the opening and closing of micro switch, the micro switch is electrically connected with the control board card of food processor, forms linkage interlock to food processor, when push rod is not correctly placed or locked in position, equipment will not start or run, to prevent injury or equipment damage caused by improper operation. This new mechanical structure, production cost is cheap, will not be out of control by external magnetic field interference, and has good reliability.

[0010] As an improvement of the utility model, two limit pins are symmetrically arranged on the transmission rod, and an arc surface is arranged on the transmission rod and tightly attached to the top end of the first safety rod. The purpose of this design is: two limit pins are symmetrically arranged on the transmission rod, so that the transmission rod can only move vertically up and down in the limiting groove of the feeding cylinder, and cannot move horizontally left and right.

[0011] As an improvement of the utility model, a limiting groove is arranged on the feeding cylinder, which allows the limit pin of the transmission rod to move up and down, and a positioning hole is arranged on the feeding cylinder, which allows the first safety rod to pass through. The purpose of this design is: the first safety rod passes through the positioning hole on the feeding cylinder to prevent the first safety hole from moving horizontally.

[0012] As an improvement of the utility model, the top end of the first safety rod is arc-shaped. The purpose of this design is: the top end of the first safety rod is designed to be arc-shaped, which cooperates with the arc surface of the transmission rod to make the force transmission smoother. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings, which form a part of this patent, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application, but are not intended to limit the application.

[0014] In the drawings:

[0015] Figure 1 A perspective view of the safety linkage device according to the present application Figure 1 .

[0016] Figure 2 A schematic view of the position of the safety linkage device according to the present application in a food processor.

[0017] Figure 3 A perspective view of the safety linkage device according to the present application Figure 2 .

[0018] Figure 4 A schematic view of the position of the transmission rod and the first safety rod according to the present application.

[0019] Figure 5 A perspective view of the transmission rod according to the present application.

[0020] Figure 6 A perspective view of the feeding cylinder according to the present application.

[0021] Figure 7 A perspective view of the third safety rod according to the present application.

[0022] BRIEF DESCRIPTION OF DRAWINGS 1. Safety linkage device; 2. Pushing rod; 3. Feeding cylinder; 4. Transmission rod; 5. First safety rod; 6. Second safety rod; 7. First compression spring; 8. Spring limiting seat; 9. Third safety rod; 10. Second compression spring; 11. Convex point; 12. Positioning hole; 13. Micro switch; 14. Limiting pin; 15. Circular arc surface; 16. Limiting groove; 17. Blade group; 18. Cup body; 19. Machine base; 20. Pressing surface; 21. Pushing rod placing cavity; 22. Contact surface. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present application will be described hereinafter with reference to the drawings, in which the preferred embodiments of the present application are described. It should be understood that the preferred embodiments described hereinafter are merely intended to explain and illustrate the present application, and are not intended to limit the present application.

[0024] Example 1

[0025] Please refer to Figure 1 -7.

[0026] The embodiment provides a sliding safety linkage device applied to a food processor.

[0027] According to the CE safety standard (EMC instruction and LVD instruction), a cover interlocking safety mode is required for household appliances (such as a food processor, a food processing machine, a coffee machine and the like), when the cover (a pushing rod) is not correctly placed or locked in place, the equipment cannot be started or operated, so as to prevent injuries or equipment damage caused by improper operation. Therefore, according to the CE safety standard, it is necessary to improve the food processor, and a safety linkage device 1 is added.

[0028] The embodiment provides a sliding safety linkage device applied to a food processor. Figure 1 、 Figure 2 、 Figure 3 The safety linkage device 1 comprises a transmission rod 4, a first safety rod 5, a second safety rod 6, a third safety rod 9 and a micro switch 13 from top to bottom.

[0029] In the embodiment of the utility model application, please refer to Figure 4 The first safety rod 5 is movably connected with the transmission rod 4, the lower end of the first safety rod 5 is tightly attached to the second safety rod 6, the first safety rod 5 is provided with a spring limiting seat 8 for placing a first compression spring 7, the first compression spring 7 is used to push the first safety rod 5 and has a certain elastic tendency, and the second compression spring 10 has the same effect.

[0030] In the embodiment of the utility model application, please refer to Figure 5 The transmission rod 4 is provided with two limiting pins 14 symmetrically, and the transmission rod 4 is provided with a circular arc surface 15 tightly attached to the top end of the first safety rod 5. The two limiting pins 14 are symmetrically arranged on the transmission rod 4, so that the transmission rod 4 can only move vertically in the limiting groove 16 of the feeding cylinder 3 and cannot move horizontally.

[0031] In the embodiment of the utility model application, please refer to Figure 1 and Figure 3(steric diagram of different angle) The lower end of the second safety lever 6 is close to the third safety lever 9, the bottom end of the second safety lever 6 is placed with the second compression spring 10, the third safety lever 9 is provided with the convex point 11, when the pushing rod 2 of the food processor is pressed down, the transmission lever 4 is pressed down, through force transmission, the convex point 11 can control the opening and closing of the micro switch 13; the micro switch 13 is electrically connected with the control board card of the food processor, and linkage interlocking of the food processor is formed.

[0032] In the embodiments of the present application, please refer to Figure 6 The limiting slot 16 that can allow the limiting pin 14 of the transmission lever 4 to move up and down is arranged on the feeding cylinder 3, and the positioning hole 12 that allows the first safety lever 5 to pass through is arranged on the feeding cylinder 3. The first safety hole is prevented from moving transversely by allowing the first safety lever 5 to pass through the positioning hole 12 on the feeding cylinder 3.

[0033] Further, please refer to Figure 4 The top end of the first safety lever 5 is in the shape of a circular arc. The circular arc surface 15 of the transmission lever 4 is matched with the circular arc-shaped top end of the first safety lever 5, so that force transmission is more smooth.

[0034] The safety linkage device with sliding function applied to the food processor provided in the embodiments is used in the working process. The pushing rod 2 of the food processor is pressed down to collide with the pressing surface 20 of the transmission lever 4. The transmission lever 4 is moved downward under pressure, so that the first safety lever 5 is synchronously moved downward, the second safety lever 6 is pushed to move downward, the second safety lever 6 presses the convex point 11 on the third transmission lever 4 downward to press the switch contact of the micro switch 13 through the contact surface 22 of the third transmission lever 9, and the closure of the micro switch 13 is controlled. The micro switch 13 is electrically connected with the control board card of the food processor, and linkage interlocking of the food processor is formed. When the pushing rod 2 is not correctly placed or locked in place, the equipment cannot be started or operated, so as to prevent injuries or equipment damage caused by improper operation. The novel mechanical structure is cheap in production cost, cannot be out of control due to external magnetic field interference, and is good in reliability.

[0035] In the description of the present application, it should be explained that the terms "vertical", "upper", "lower", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0036] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term "arrangement", "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can indirectly connect through the intermediate medium, can be two elements inside the communication。For ordinary skilled person in the art, can understand the specific meaning of the above-mentioned terms in the utility model according to specific circumstances.

[0037] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features。Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A safety linkage with sliding application to a food processor, comprising a feed tube (3) for placing a pusher rod (2), characterized in that: The feeding cylinder (3) is provided with a transmission rod (4), the first safety rod (5) is movably connected to the transmission rod (4), the second safety rod (6) is tightly attached to the lower end of the first safety rod (5), the spring limiting seat (8) for placing the first compression spring (7) is arranged on the first safety rod (5), the third safety rod (9) is tightly attached to the lower end of the second safety rod (6), the second compression spring (10) is placed at the bottom end of the second safety rod (6), the convex point (11) is arranged on the third safety rod (9), when the pushing rod (2) of the food processor is pressed, the transmission rod (4) is pressed, through force transmission, the convex point (11) can control the opening and closing of the micro switch (13); the micro switch (13) is electrically connected with the control board of the food processor, forming a linkage interlock for the food processor.

2. The sliding safety linkage for a food processor according to claim 1, characterized in that: Two limiting pins (14) are symmetrically arranged on the transmission rod (4), and the circular arc surface (15) is arranged on the transmission rod (4) and tightly attached to the top end of the first safety rod (5).

3. The sliding safety linkage for a food processor according to claim 2, wherein: The limiting slot (16) for allowing the limiting pin (14) of the transmission rod (4) to move up and down is arranged on the feeding cylinder (3), and the positioning hole (12) for allowing the first safety rod (5) to pass through is arranged on the feeding cylinder (3).

4. The sliding safety linkage for a food processor according to claim 1, wherein: The top end of the first safety rod (5) is in the shape of a circular arc.

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