Pressing type food processor positive and negative rotation anti-falling blade shaft structure

Abstract

The utility model discloses a kind of positive and negative rotation anti-falling blade shaft structures of press type food processor, including motor, pin shaft and blade assembly, pin shaft is fixed in the output shaft of motor one end, blade assembly includes mounting head, blade and spring, blade is fixed on mounting head, mounting hole is equipped on mounting head, spring is sleeved in mounting hole, the inside wall of mounting hole is equipped with snap-in slot, guide slot and locking groove, snap-in slot is two, it is oppositely arranged in mounting hole, the two ends of pin shaft are respectively matched with the locking groove of two sides, the output shaft of motor one end is inserted into mounting hole, and it is abutted with spring. By linear pressing of blade assembly, pin shaft and locking groove can be matched, the fixing of mounting head and motor output shaft is realized, and installation is convenient;Meanwhile, by the joint action of spring and locking groove, the axial position of mounting head on motor output shaft is relatively fixed, so that the positive rotation of blade assembly and the reverse rotation blade assembly can be tightly matched and fixed, and installation is convenient.

Description

Technical Field

[0001] This utility model relates to an important component of a food processor, and in particular to a forward and reverse anti-detachment blade shaft structure for a press-type food processor. Background Technology

[0002] Common kitchen appliances such as food processors, blenders, and soy milk makers process food through the rotation of blades. However, current methods of connecting the blades to the motor shaft are mostly one-way screw-on types, such as threaded tightening or simple pin-and-buckle connections. These two types of structures have the following obvious defects and shortcomings: The threaded tightening structure, similar to the principle of a nut and bolt, means that the blade assembly can only be tightened when it rotates in one direction. If the motor rotates in the opposite direction, the blade assembly is at risk of loosening. This greatly limits the function of the motor and makes it impossible to achieve a forward and reverse rotation working mode. Forward and reverse rotation helps to break up food fibers, prevent food from tangling, and improve the efficiency and effect of cell wall breaking. At the same time, when the blade assembly needs to be cleaned, a lot of force is required to loosen it, which is inconvenient to operate.

[0003] Although the simple pin-and-latch structure can rotate in both directions, its connection usually has axial clearance. When the machine is running at high speed, especially when the load changes suddenly or vibration occurs, the blade assembly is prone to loosening or even popping off the motor shaft, which poses a safety hazard and may also damage the machine. Summary of the Invention

[0004] The purpose of this invention is to provide a forward and reverse anti-detachment blade shaft structure for a press-type food processor that can solve at least one of the above problems.

[0005] According to one aspect of this utility model, a forward and reverse anti-detachment blade shaft structure for a press-type food processor is provided, including a motor, a pin shaft, and a blade assembly. The pin shaft is fixed to one end of the output shaft of the motor. The blade assembly includes a mounting head, a blade, and a spring. The blade is fixed to the mounting head, which has a mounting hole. The spring is sleeved in the mounting hole. The inner wall of the mounting hole has a snap-in groove, a guide groove, and a locking groove. There are two snap-in grooves, which are arranged opposite to each other in the mounting hole. The locking grooves are connected to the snap-in grooves through the guide grooves. There are two locking grooves. The two ends of the pin shaft respectively cooperate with the locking grooves on both sides. One end of the output shaft of the motor extends into the mounting hole and abuts against the spring.

[0006] The beneficial effects of this utility model are as follows: By providing a snap-in groove, a guide groove, and a locking groove on the mounting head, the blade assembly can be easily pressed in a straight line, thereby achieving the engagement of the pin shaft with the locking groove and fixing the mounting head to the motor output shaft, making installation convenient; at the same time, by providing a spring, it can act on the motor output shaft, which can relatively fix the axial position of the mounting head on the motor output shaft, preventing the blade assembly from loosening and falling off during rotation, so that the blade assembly can be tightly engaged and fixed in both forward and reverse rotation, achieving a safe and reliable effect and convenient installation.

[0007] In some embodiments, the guide groove includes an inlet groove and an outlet groove. The locking groove is connected to the locking groove via the inlet groove, and the locking groove is connected to another locking groove via the outlet groove. Thus, the inlet groove facilitates the axial insertion of the pin, which is guided into the locking groove, thereby enabling the linear press-fit installation of the blade assembly.

[0008] In some embodiments, both the snap-in groove and the locking groove are vertically arranged, while the guide groove is inclined. This allows the guide groove to guide the movement of the pin without requiring manual rotation, making installation quick and convenient.

[0009] In some implementations, the width of the locking groove is the same as the outer diameter of the pin. This facilitates the pin's fixation within the locking groove, allowing for forward and reverse rotation of the motor. The pin, in the locked state, can withstand torque in both directions without distinction and effectively prevents axial dislodgement.

[0010] In some embodiments, the bottom end of the locking groove is provided with a tapered groove, the width of the bottom end of the tapered groove being greater than the width of its top end. This allows the pin to be quickly inserted into the locking groove.

[0011] In some implementations, the outer diameter of one end of the motor's output shaft matches the inner diameter of the mounting hole. This facilitates the insertion of the motor's output shaft into the mounting hole and allows for the compression of the spring.

[0012] In some embodiments, the top of the mounting head is provided with a mounting post, and the blade is fixed to the mounting post. Thus, the mounting post facilitates the installation of the blade. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the forward and reverse anti-detachment blade shaft structure of the press-type food processor of this utility model; Figure 2 This is a cross-sectional view of the forward and reverse anti-detachment blade shaft structure of the press-type food processor of this utility model; Figure 3 This is a schematic diagram of the mounting head in the forward and reverse anti-detachment blade shaft structure of the press-type food processor of this utility model; Figure 4 This is a top view of the mounting head in the forward and reverse anti-detachment blade shaft structure of the press-type food processor of this utility model; Figure 5 yes Figure 4 A schematic diagram of the AA cross-sectional structure; Figure 6 yes Figure 4 BB cross-sectional structural diagram Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings.

[0015] Reference Figures 1-6 The forward and reverse anti-detachment blade shaft structure of the press-type food processor includes a motor 1, a pin 2, and a blade assembly 3. The pin 2 is fixed to one end of the output shaft 11 of the motor 1. The blade assembly 3 includes a mounting head 31, a blade 32, and a spring 33. The blade 32 is fixed on the mounting head 31, which has a mounting hole 311. The spring 33 is fitted into the mounting hole 311. The inner wall of the mounting hole 311 has a snap-fit ​​groove 312, a guide groove 313, and a locking groove 314. There are two snap-fit ​​grooves 312, which are arranged opposite each other in the mounting hole 311. The locking grooves 314 are connected to the snap-fit ​​grooves 312 through the guide grooves 313. There are two locking grooves 314. The two ends of the pin 2 are respectively engaged with the locking grooves 314 on both sides. One end of the output shaft of the motor 1 extends into the mounting hole 311 and abuts against the spring 33.

[0016] During the manufacturing process, the mounting head 31 has a snap-fit ​​groove 312, a guide groove 313, and a locking groove 314 formed on its inner wall to facilitate its engagement with the pin 2.

[0017] The outer diameter of the spring 33 is the same as the inner diameter of the mounting hole 311, so that the spring 33 can be locked in the mounting hole 311. In actual use, in order to improve the stability of the spring 33 in the mounting hole 311, the end of the spring 33 that abuts against the mounting hole 311 is welded and fixed in the mounting hole 311. The motor 1 is the same motor as that in existing food processors.

[0018] The guide groove 313 includes an inlet groove 315 and an outlet groove 316. The snap-in groove 312 is connected to the locking groove 314 through the inlet groove 315, and the locking groove 314 is connected to another snap-in groove 312 through the outlet groove 316.

[0019] When the blade assembly 3 needs to be engaged with the output shaft 11 of the motor, both ends of the pin 2 are inserted into the locking slots 312 on both sides. As the pin 2 is further inserted, the spring 33 is compressed, and the pin 2 is guided into the locking slot 314 by the guide slot 315. The axial position of the pin is limited by the locking slot 314 and the spring 33, thus realizing the engagement between the motor output shaft and the mounting head 31, that is, realizing the installation of the blade assembly 3 on the output shaft 11 of the motor 1, which facilitates the rotation of the blade assembly 3 by the output shaft of the motor. Therefore, by inserting the blade assembly 3 straight towards the pin 2, the pin 2 can be inserted into the locking slot under the guidance of each slot, realizing the engagement between the blade assembly 3 and the motor.

[0020] Both the insertion groove 312 and the locking groove 314 are vertically arranged, while the guide groove 313 is inclined.

[0021] With the inlet groove 315 and outlet groove 316 provided, when the pin 2 is inserted along the insertion groove 312, under the guidance of the inlet groove 315, the pin 2 is inserted into the locking groove 314, so that the blade assembly 3 is fixedly connected to the output shaft of the motor; when the blade assembly 3 needs to be removed, the blade assembly 3 is pressed vertically, and the pin 2 moves along the corresponding insertion groove 312 under the action of the outlet groove 316, and is pushed out under the push of the spring, realizing the rapid separation of the blade assembly 3 from the motor 1.

[0022] Therefore, the connection and disassembly of the output shaft of motor 1 and blade assembly 3 can be achieved by vertically pressing the blade assembly 3, allowing the operator to quickly install and remove the blade assembly 3 from the motor output shaft with one hand.

[0023] The width of the locking groove 314 is the same as the outer diameter of the pin 2. Therefore, it is beneficial for the pin 2 to make close contact with the side wall of the locking groove 314, which can effectively transmit torque. This ensures that the transmission rigidity, efficiency and reliability of the motor in both forward and reverse rotation are completely consistent, with no performance difference, perfectly meeting the working requirements of the blender in both forward and reverse rotation.

[0024] When the pin 2 is fixed in the locking groove 314, the rebound force of the spring 33 acts on the pin 2, causing the pin 2 to be tightly pressed into the locking groove 314. This structure ensures that it can withstand bidirectional torque in the locked state without difference and effectively prevents axial dislodgement. At this time, the output shaft of the motor 1 can rotate forward or backward, realizing the forward or reverse rotation of the blade 32, which is beneficial for breaking up food fibers, avoiding food tangling, and improving the efficiency and effect of cell wall breaking.

[0025] The bottom end of the locking groove 312 is provided with a tapered groove 317, the width of the bottom end of the tapered groove 317 being greater than the width of its top end. Therefore, the tapered groove 317 facilitates the quick and easy insertion of the pin 2 into the locking groove 312.

[0026] The outer diameter of one end of the output shaft of motor 1 is consistent with the inner diameter of the mounting hole 311, so that the mounting hole 311 and the output shaft of motor are tightly fitted. Therefore, the mounting head 31 is prevented from shaking when the output shaft of motor 1 is rotated, and the vibration of the blade assembly 3 is reduced when it rotates.

[0027] The mounting head 31 has a mounting post 318 at its top, and the blade 32 is fixed on the mounting post 318. The blade 32 consists of multiple blades, each with a through hole, which is used to fit and fix the blade 32 onto the mounting post 318. To improve the stability of the blade 32 on the mounting post 318, a threaded hole is provided along the axial direction at the top of the mounting post 318. An external screw can be tightened into this threaded hole. The outer diameter of the larger end of the screw is larger than the inner diameter of the through hole on the blade 32. The larger end of the screw can limit the movement of the blade 32, ensuring the stability of the blade 32 on the mounting head 31.

[0028] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A reversible anti-detachment blade shaft structure for a press-type food processor, characterized in that: The device includes a motor (1), a pin (2), and a blade assembly (3). The pin (2) is fixed to one end of the output shaft of the motor (1). The blade assembly (3) includes a mounting head (31), a blade (32), and a spring (33). The blade (32) is fixed on the mounting head (31). The mounting head (31) has a mounting hole (311). The spring (33) is fitted into the mounting hole (311). The inner wall of the mounting hole (311) has a slot (33). 12) Guide groove (313) and locking groove (314). There are two locking grooves (312), which are arranged opposite to each other in the mounting hole (311). The locking groove (314) is connected to the locking groove (312) through the guide groove (313). There are two locking grooves (314). The two ends of the pin (2) are respectively engaged with the locking grooves (314) on both sides. One end of the output shaft of the motor (1) extends into the mounting hole (311) and abuts against the spring (33).

2. The anti-detachment blade shaft structure of the press-type food processor according to claim 1, characterized in that, The guide groove (313) includes an inlet groove (315) and an outlet groove (316). The snap-in groove (312) is connected to the locking groove (314) through the inlet groove (315). The locking groove (314) is connected to another snap-in groove (312) through the outlet groove (316).

3. The anti-detachment blade shaft structure of the press-type food processor according to claim 2, characterized in that, The insertion groove (312) and locking groove (314) are both vertically arranged, while the guide groove (313) is inclined.

4. The anti-detachment blade shaft structure of the press-type food processor according to claim 3, characterized in that, The width of the locking groove (314) is the same as the outer diameter of the pin (2).

5. The anti-detachment blade shaft structure of the press-type food processor according to any one of claims 1 to 4, characterized in that, The bottom end of the slot (312) is provided with a conical groove (317), and the width of the bottom end of the conical groove (317) is greater than the width of its top end.

6. The anti-detachment blade shaft structure of the press-type food processor according to any one of claims 1 to 4, characterized in that, The outer diameter of one end of the output shaft of the motor (1) is consistent with the inner diameter of the mounting hole (311).

7. The anti-detachment blade shaft structure of the press-type food processor according to claim 6, characterized in that, The top of the mounting head (31) is provided with a mounting post (318), and the blade (32) is fixed on the mounting post (318).

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