Soybean milk machine

Abstract

A guide cylinder protruding towards the center of a machine head is integrally arranged on the inner side wall of the machine head, one end of the guide cylinder extends towards the center of the machine head, the other end of the guide cylinder penetrates through the side wall of the machine head, an installation opening is formed in the outer side wall of the machine head, an upper coupler comprises a main body and an installation portion protruding outwards from the main body, and the installation portion comprises an installation face. The mounting part extends into the guide cylinder through the mounting opening, the fastener penetrates through the guide cylinder and the mounting part to fix the mounting part on the guide cylinder, the mounting surface is in close fit with the inner surface of the guide cylinder, and the length of the guide cylinder protruding towards the interior of the machine head is at least 5 mm. The upper coupler is fixed by the fastener, and the mounting part and the guide cylinder are in close fit to realize surface-to-surface contact, so that the acting force on the mounting part is uniformly dispersed to the inner surface of the guide cylinder through the mounting surface, the guide cylinder is not easy to damage, the fixing effect of the guide cylinder on the mounting part is ensured, and the upper coupler is firmly fixed and is not easy to loosen and fall off.

Description

Technical Field

[0001] The utility model relates to the technical field of soybean milk machines, in particular to a soybean milk machine. Background Art

[0002] In the existing soymilk machine with the motor placed on top, the machine head is provided with an upper coupler, and the cup body is provided with a lower coupler that is plugged and matched with the upper coupler. For the installation and fixation of the upper coupler, the prior art discloses an installation method, that is, a structure for installing the coupler is provided on the protruding machine head, such as in the soymilk machine disclosed in patent CN207370614U, an upper coupler installation bracket is provided on the transition bracket, and the inner cover protrudes horizontally outward to form an upper coupler installation bracket for installing the upper coupler, but this solution requires the bracket to be provided with a buckle and a screw column for fixing the upper coupler, and a sealing gasket needs to be provided between the upper coupler and the bracket. The installation and sealing structure of the upper coupler are relatively complicated, resulting in insufficient simplification of the coupler and the installation structure. For another example, in the soymilk maker disclosed in patent CN206700060U, an upper coupler mounting seat is provided on the upper cover of the machine head, and a accommodating cavity for accommodating the upper coupler is formed in the upper coupler mounting seat. However, in this solution, the accommodating cavity is surrounded by a bottom plate, ribs and a cover plate, resulting in that the installation structure of the upper coupler is still relatively complicated, and the upper coupler is far away from the center of the machine head. During the operation of the soymilk maker, as the motor in the machine head drives the stirring blade to rotate, the machine head extending into the cup body is prone to large-scale vibration, and the machine head is prone to offset, which affects the crushing effect of the soymilk maker and is also prone to overflow.

[0003] In addition, the prior art also discloses a method for installing the upper coupler. For example, in the soymilk machine disclosed in patent CN206777248U, the upper coupler and the upper cover of the machine head are mainly injection-molded as one. Compared with the first installation method, this scheme does not require the setting of an upper coupler mounting bracket, and does not require the setting of corresponding screw structures and snap-on structures, thereby simplifying the installation method of the upper coupler. However, in this scheme, the upper coupler and the upper cover of the machine head are injection-molded as one. When the upper coupler fails and needs to be replaced, the upper cover of the machine head needs to be replaced together, resulting in increased maintenance costs and being unfavorable for the maintenance and replacement of the upper coupler. In addition, since the upper coupler is a high-electricity connector, electric sparks may occur during operation. Therefore, the upper coupler shell is usually made of flame-retardant grade materials, and the material required for the upper cover of the machine head does not require too high a melting point. After two materials with different melting points are injection-molded as one, after long-term use, the injection molding is prone to breakage, causing the coupler to fall off.

[0004] The prior art also discloses a mounting method. For example, in the soymilk machine disclosed in patent CN203723907U, the upper coupler extends from the mounting hole of the side wall of the upper cover of the machine head through the mounting part. Positioning grooves are set on both sides of the part of the mounting part extending into the upper cover. Positioning pieces are set in the positioning grooves. The part of the positioning piece protruding from the positioning grooves is against the inner wall of the upper cover to realize the positioning of the mounting part. However, during the process of plugging and matching between the upper coupler and the lower coupler, the force is transmitted to the positioning piece and the mounting part. The positioning piece will generate an extrusion force with the side wall of the upper cover. The positioning piece clamps the mounting part through the positioning groove. The positioning piece and the groove wall of the positioning groove will also generate an extrusion force. The thin positioning groove wall is easy to break, resulting in the positioning piece being unable to stably install and position the mounting part, thereby causing the upper coupler to loosen and fall off, affecting the normal use of the user. Moreover, in this scheme, the positioning piece needs to be fixed with a screw separately. The positioning piece and the machine head are set separately. During assembly, the positioning piece needs to be fixed first, and then the machine head is assembled, which increases the assembly steps and reduces the assembly efficiency. Utility Model Content

[0005] The utility model provides a soymilk machine, aiming to solve the problem that the installation and fixing structure of the coupler on the existing soymilk machine is complicated, the upper coupler is far away from the center of the machine head, resulting in the head offset to cause overflow and poor crushing effect, and the upper coupler of the existing soymilk machine is not firmly fixed, resulting in the upper coupler loosening and falling off.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a soymilk machine, including a machine head, a cup body, a machine head cover on the cup body, an upper coupler is arranged on the machine head, and a lower coupler plugged with the upper coupler is arranged on the cup body, characterized in that: the inner side wall of the machine head is integrally formed with a guide cylinder, one end of the guide cylinder extends toward the center of the machine head, the other end of the guide cylinder penetrates the side wall of the machine head and forms a mounting opening on the outer side wall of the machine head, the upper coupler includes a main body and a mounting portion protruding outward from the main body, the mounting portion includes a mounting surface, the mounting portion extends into the guide cylinder through the mounting opening, a fastener passes through the guide cylinder and the mounting portion, fixes the mounting portion on the guide cylinder, and makes the mounting surface tightly fit with the inner surface of the guide cylinder, and the length of the guide cylinder protruding into the inside of the machine head is at least 5 mm.

[0007] Furthermore, a sealing sleeve is sleeved on the outer side of the mounting portion, and the sealing sleeve is clamped between the mounting portion and the inner wall of the guide tube.

[0008] Furthermore, the mounting portion is surrounded by a groove, and the sealing sleeve is sleeved in the groove.

[0009] Furthermore, the fastener is located outside the machine head and is arranged away from the center of the machine head relative to the sealing sleeve. The machine head includes a holding portion that is held on the cup body. The fastener passes through the holding portion and the guide cylinder in sequence to fix the mounting portion on the guide cylinder.

[0010] Further, the machine head includes a machine head upper cover and a machine head lower cover fixedly connected to the machine head upper cover, and the guide cylinder is located on the machine head upper cover; or, the machine head includes a machine head upper cover, a machine head lower cover, and a transition bracket, the transition bracket is clamped between the machine head upper cover and the machine head lower cover, the guide cylinder is located on the transition bracket, the inner side wall of the transition bracket is provided with a protrusion extending toward the center of the machine head and surrounding the transition bracket, the guide cylinder is located above the protrusion, and the bottom wall of the guide cylinder is integrally formed at the top of the protrusion; or, the machine head includes a machine head lower cover, a flange extending horizontally outward is provided on the top of the machine head lower cover, a boss surrounding the flange is provided on the flange, and the guide cylinder is located on the boss.

[0011] Furthermore, the machine head includes a machine head body and a machine head lower cover, a flange extending horizontally outward is provided on the top of the machine head lower cover, the guide cylinder is located on the machine head body, the machine head body and the machine head lower cover are fixedly connected by the flange, a downwardly extending limiting portion is provided on the lower end edge of the mounting opening located on the outside of the machine head body, the outer edge of the flange is pressed against the inner side of the limiting portion, and the side wall of the main body is pressed against the outer side of the limiting portion.

[0012] Furthermore, the fastener is hidden in the nose.

[0013] Further, the machine head comprises a machine head body with an opening at the upper end and a cover body, the guide cylinder is located on the machine head body, and after the fastener fixes the upper coupler to the guide cylinder from the top of the guide cylinder from top to bottom, the cover body and the machine head body are closed and sealed so that the fastener is hidden in the machine head; or, the machine head comprises a machine head body with an opening at the lower end and a machine head lower cover, a flange extending horizontally outward is arranged on the top of the machine head lower cover, the guide cylinder is located on the machine head body, and after the fastener fixes the upper coupler to the guide cylinder from the bottom of the guide cylinder from bottom to top, the machine head lower cover is fixedly connected to the machine head body through the flange, so that the fastener is hidden in the machine head.

[0014] Furthermore, the machine head is provided with a protective cover with an opening at the bottom, and the protective cover is arranged on the outside of the main body.

[0015] Furthermore, a first limiting portion is provided on the side wall of the main body away from the center of the head, and a second limiting portion is provided on the inner wall of the protective cover. After the protective cover is provided on the outside of the main body, the first limiting portion and the second limiting portion are stopper-matched or snap-connected.

[0016] After adopting the above technical solution, the following beneficial technical effects are achieved:

[0017] 1. In the utility model, a guide cylinder is integrally provided on the inner side wall of the machine head, a mounting portion is provided on the upper coupler, the mounting portion extends into the guide cylinder through the mounting opening, and a fastener fixes the mounting portion to the guide cylinder so that the mounting surface of the mounting portion is tightly matched with the inner surface of the guide cylinder; through this fixing method of the upper coupler, on the one hand, there is no need to provide a mounting seat for the upper coupler on the upper cover or lower cover of the machine head, so there is no need to provide a corresponding buckle or screw structure for fixing the upper coupler, which simplifies the mounting structure of the upper coupler and also makes the structure of the machine head simpler; on the other hand, the guide cylinder extends at least 5 mm into the machine head, and by fixing the mounting portion of the upper coupler The mounting surface of the guide cylinder is in close contact with the inner surface of the guide cylinder. In fact, the mounting surface and the inner surface of the guide cylinder form a surface contact. The guide cylinder and the mounting part are then fixed with fasteners. The guide cylinder limits the mounting part through the inner surface to prevent the mounting part from rotating in the circumferential direction. When fixed with the fasteners, the mounting part is prevented from moving in the axial and radial directions, thereby affecting the installation positioning of the upper coupler. The mounting part and the guide cylinder are in surface contact with each other, which increases the contact area between the two. During the plug-in and mating process of the upper and lower couplers, the upper coupler will be subjected to an axial force. As a part of the upper coupler, the mounting part will also transmit the force to the mounting part. , because the mounting part is located in the guide cylinder, and the mounting surface contacts the inner surface of the guide cylinder, the force is dispersed to a relatively large plane, so that each part of the mounting part is evenly stressed, ensuring that the mounting part will not be damaged or broken due to excessive local stress, thereby causing the upper coupler to loosen or shift, affecting the plug-in fit of the upper and lower couplers. The guide cylinder is integrally arranged with the machine head, which improves the structural strength of the guide cylinder. The guide cylinder is not easy to be damaged during the process of positioning the mounting part, which ensures the positioning effect of the guide cylinder on the mounting part and improves the stability of the mounting part; finally, the upper coupler extends into the guide cylinder through the mounting part, so that the upper coupler The distance between the coupler and the machine head is closer, which reduces the overall size of the machine head and is conducive to miniaturization of the machine head. In addition, since the center of the machine head is closer to the coupler, when the machine head is working, the upper and lower couplers are plugged in and matched, and the other parts of the machine head are pressed on the cup body as a whole. As the machine head works, except for the plug-in point of the upper and lower couplers, the vibration of the machine head will gradually increase in the direction away from the coupler, reducing the distance between the coupler and the center of the machine head, so that the limiting effect generated by the plug-in of the upper and lower couplers can better suppress the vibration intensity of the end of the machine head away from the coupler, which is conducive to reducing the vibration of the machine head and improving the stability and noise of the soymilk machine.

[0018] 2. In the utility model, a sealing sleeve is sleeved on the mounting portion, and the sealing sleeve is clamped by the inner wall of the guide tube and the mounting portion. The sealing sleeve can seal the gap between the mounting portion and the guide tube, thereby preventing water from flowing from the guide tube into the interior of the machine head during cleaning, causing short circuit damage to electronic components.

[0019] 3. In the utility model, the machine head is supported on the cup body by the supporting part, and the fastener passes through the supporting part to fix the mounting part. The fastener is arranged away from the center of the machine head relative to the sealing sleeve. During the use and cleaning of the soymilk maker, water entering from the gap between the fastener and the supporting part is blocked by the sealing sleeve and cannot enter the interior of the machine head, thereby preventing the electronic components inside the machine head from being short-circuited by water.

[0020] 4. In the utility model, a groove is provided on the installation portion, and the sealing sleeve is arranged in the groove. Since the sealing sleeve is partially located in the groove, after the installation sleeve is arranged in the groove, the groove wall of the groove has a limiting effect on the sealing sleeve, so that the positioning and installation of the sealing sleeve is more stable. When the installation portion extends into the guide cylinder, the sealing sleeve is squeezed by the inner wall of the guide cylinder. Due to the limiting blocking of the groove wall, the sealing sleeve is prevented from shifting and falling off, thereby improving the installation efficiency.

[0021] 5. In the utility model, the guide cylinder is arranged on the transition bracket, a protrusion is arranged on the inner wall of the transition bracket, and the bottom wall of the guide cylinder is integrally formed on the protrusion. When the guide cylinder is squeezed by the applied force, the bottom wall of the guide cylinder is supported by the protrusion, thereby improving the structural strength of the bottom wall of the guide cylinder. In the process of limiting and fixing the guide cylinder to the mounting part, the guide cylinder is prevented from being squeezed and broken, so that the upper coupler is not easy to loosen or fall off.

[0022] 6. In the present invention, the fastener is arranged in the machine head. During the process of fixing the mounting portion with the fastener, the mounting gap is located in the machine head, and there is no need to arrange an additional sealing structure, thereby improving the waterproof effect of the machine head.

[0023] 7. In the utility model, a downwardly extending limiting portion is provided at the lower end edge of the mounting opening, the inner side of the limiting portion abuts against the outer end surface of the flange, and the outer side of the limiting portion abuts against the side wall of the main body. In the process of the mounting portion extending into the guide cylinder, when the side wall of the main body abuts against the limiting portion, the initial positioning of the mounting portion is completed, and then the mounting portion is fixed by fasteners to prevent the mounting portion from extending too much or too little into the guide cylinder, resulting in the fastener being unable to accurately pass through the guide cylinder and the mounting portion, affecting the positioning and installation of the mounting portion by the fastener, so that the fastener can quickly and accurately position the mounting portion, thereby improving the installation efficiency.

[0024] 8. In the utility model, a protective cover is arranged on the machine head, and the protective cover is arranged on the outside of the main body to prevent the upper coupler main body from being bumped and improve the service life of the upper coupler.

[0025] 9. In the utility model, a first limiting portion and a second limiting portion that cooperate with each other are arranged on the side wall of the main body and the inner wall of the protective cover. The first limiting portion and the second limiting portion form a stop fit or a snap connection. After the mounting portion extends into the guide cylinder, the first limiting portion and the second limiting portion cooperate to pre-position the upper coupler, thereby avoiding movement of the upper coupler when using the fastener for positioning, resulting in the fastener being unable to accurately pass through the guide cylinder and the mounting portion to install and position the mounting portion, so that the fastener can quickly and accurately position the mounting portion, thereby improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] Figure 1 This is a schematic structural diagram of an embodiment of the soymilk machine of the utility model;

[0028] Figure 2 for Figure 1 Schematic diagram of the structure explosion of the head of the soymilk machine;

[0029] Figure 3 for Figure 1 The side structure cross-sectional view of the soymilk machine head;

[0030] Figure 4 for Figure 3 The enlarged schematic diagram of point A in the middle;

[0031] Figure 5 for Figure 1 A structural cross-sectional view of the soymilk machine head from another angle;

[0032] Figure 6 for Figure 5 The enlarged schematic diagram of point B in the middle; DETAILED DESCRIPTION

[0033] like Figure 1-Figure 6 As shown, the present application provides an embodiment of a soymilk maker, including a head 100 and a cup body 200. Specifically, the head 100 includes a head upper cover 101 and a head lower cover 106. A transition bracket 104 is arranged between the head upper cover 101 and the head lower cover 106. The head upper cover 101, the head lower cover 106, and the transition bracket 104 are fixedly connected by screws 109.

[0034] The soymilk maker further comprises an upper coupler 102, which is mounted on the machine head. Specifically, the upper coupler is mounted on a transition bracket in the machine head.

[0035] The upper coupler of the soybean milk machine in this embodiment includes a main body 1023 and a mounting portion 1021 extending horizontally outward from the top of the main body 1023. Figure 4 , Figure 6As shown, the main body 1023 is approximately a shell, and a plurality of vertically downward pins are provided on the top wall of the main body, and a plurality of wires are connected to the pins. The bottom of the main body is open, and the top of the main body extends horizontally outward to form a mounting portion 1021 of a cantilever structure. A threaded hole axially penetrating the mounting portion is provided on the mounting portion. The mounting portion 1021 includes a mounting surface. Specifically, the mounting surface includes an upper mounting surface and a lower mounting surface. The upper mounting surface extends horizontally to the top of the main body, and the overall contour is approximately a rectangle with a moderate length-to-width ratio. The lower mounting surface extends horizontally to the side wall of the main body close to the center of the head, and the overall contour is similar to the upper mounting surface. The upper and lower mounting surfaces are connected by side surfaces on both sides, and the side walls are relatively low. A wire outlet is provided at the end of the mounting portion opposite to the main body, and the wires connected to the pins extend out of the upper coupler from the wire outlet.

[0036] The outer contour of the transition bracket 104 on which the upper coupler 102 is installed corresponds to the outer contour of the upper cover and the lower cover of the machine head. In the present application, the outer contour may be annular. A guide cylinder extending toward the center of the machine head is integrally provided on the inner side wall of the transition bracket 102. Preferably, the guide cylinder is horizontally extended, such as Figure 4 , Figure 6 As shown, the guide cylinder is located inside the machine head. The guide cylinder includes an inner surface. Specifically, the inner surface includes a top wall 1041 and a bottom wall 1042. The top wall 1041 extends into the machine head at one end close to the center of the machine head, and the top wall 1041 extends to the side wall of the transition bracket at one end away from the center of the machine head. The bottom wall extends into the machine head at one end close to the center of the machine head, and the bottom wall 1042 extends to the side wall of the transition bracket at one end away from the center of the machine head. The shapes of the top wall and the bottom wall are approximately a rectangle with a moderate length-to-width ratio. The distance between the top wall and the bottom wall extending toward the center of the machine head is at least 5 mm. The top wall 1041 and the bottom wall 1042 are connected by the side walls on both sides. The bottom wall of the guide cylinder is provided with a through hole penetrating the bottom wall. The contours of the top wall 1041 and the bottom wall 1042 of the guide cylinder correspond to the contours of the upper mounting surface and the lower mounting surface of the mounting portion 1021 of the upper coupler 102. The end of the guide cylinder close to the center of the machine head and the end away from the center of the machine head are open structures. Specifically, as Figure 2 As shown, the opening at one end of the guide tube away from the center of the machine head is a mounting opening 1043 formed on the side wall of the transition bracket, and the mounting opening is respectively enclosed by the ends of the top wall, bottom wall, and side wall of the guide tube away from the center of the machine head, which means that the guide tube passes through the side wall of the transition bracket, and the opening at one end of the guide tube close to the center of the machine head is enclosed by the ends of the top wall, bottom wall, and side wall of the guide tube close to the center of the machine head. The wire extending from the upper coupler extends into the interior of the machine head from the opening at one end of the guide tube close to the center of the machine head.

[0037] When installing the soymilk machine, first install the transition bracket 104 on the machine head lower cover 106. Specifically, the machine head lower cover 106 is a cylindrical structure with an opening at the top. The top of the machine head lower cover 106 is provided with a flange extending horizontally outward. The first through hole is provided on the flange at a position corresponding to the through hole. The bottom of the transition bracket 104 is provided with an assembly surface. In order to prevent water vapor from entering the machine head when the soymilk machine is working, a sealing gasket 105 is provided on the flange of the machine head lower cover 106. The assembly surface at the bottom of the transition bracket 104 presses the sealing gasket 105 against the flange at the top of the machine head lower cover 106. The flange, the sealing gasket, and the transition bracket are provided with corresponding screw through holes. The machine head upper cover is provided with a screw column. The screws pass through the screw through holes of the flange, the sealing gasket, and the transition bracket in turn and are threadedly connected with the screw column of the machine head upper cover, thereby fixing the machine head upper cover, the transition bracket, and the machine head lower cover. Then, the mounting portion 1021 of the upper coupler 102 is extended into the guide cylinder from the mounting opening 1043 of the side wall of the transition bracket, and the top wall 1041 and the bottom wall 1042 of the guide cylinder respectively form a tight fit with the upper mounting surface and the lower mounting surface of the mounting portion. Specifically, the top wall of the guide cylinder forms a surface contact with the upper mounting surface of the mounting portion, and the bottom wall of the guide cylinder forms a surface contact with the lower surface of the mounting portion.

[0038] A second through hole is provided at the position of the sealing gasket corresponding to the first through hole. The first through hole on the flange corresponds to the second through hole of the sealing gasket, the through hole on the bottom wall of the guide cylinder and the threaded hole on the mounting portion. The fastener may be a screw, which passes through the first through hole, the second through hole, the through hole and the threaded hole from the bottom of the flange in sequence to fix the mounting portion on the guide cylinder, that is, to fix the upper coupler on the machine head. At this time, the top wall and the bottom wall of the guide cylinder and the upper mounting surface and the lower mounting surface of the mounting portion form a large surface contact. The wire extends out of the upper coupler from the end of the mounting portion and is connected to the electronic device in the machine head. Of course, the fastener may also be a pin, which passes through the guide cylinder to fix the mounting portion on the guide cylinder.

[0039] In order to facilitate accurate positioning during the installation process, in some embodiments, the head includes a head body and a head lower cover, a flange extending horizontally outward is arranged on the top of the head lower cover, the guide cylinder is located on the head body, the head body and the head lower cover are fixedly connected by the flange, and the installation port is located on the outside of the head body, such as Figure 6As shown, a vertically downward limiting portion 1043 is provided at the lower edge of the installation opening, that is, at one end of the bottom wall of the guide cylinder away from the center of the machine head, and the side wall of the limiting portion close to the center of the machine head abuts against the outer end surface of the top flange of the lower cover of the machine head. When installing the upper coupler, the upper coupler installation portion is extended into the guide cylinder from the installation opening until the side wall of the main body close to the center of the machine head abuts against the side wall of the limiting portion away from the center of the machine head. At this time, the through hole on the flange corresponds to the through hole on the bottom wall of the guide cylinder and the threaded hole on the installation portion. The machine head body can be the upper cover of the machine head, in which case the guide cylinder is located on the upper cover of the machine head; it can also be a collection of the upper cover of the machine head and the transition bracket, in which case the guide cylinder is located on the transition bracket. A limiting structure can also be provided at one end of the guide cylinder close to the center of the machine head, and a protrusion extending vertically upward can be provided at one end of the bottom wall of the guide cylinder close to the center of the machine head. The protrusion can be located at the center of one end of the bottom wall close to the center of the machine head, and the end of the upper coupler installation portion close to one end of the center of the machine head abuts against the protrusion, thereby limiting the installation portion in the guide cylinder.

[0040] The soymilk machine of the present application has a guide cylinder integrally arranged on the transition bracket, the guide cylinder penetrates the side wall of the transition bracket, and a mounting opening is formed on the outer side wall of the transition bracket, a mounting portion extending horizontally outward is arranged on the top of the upper coupler, the upper coupler mounting portion extends into the guide cylinder from the mounting opening, the upper and lower mounting surfaces of the upper coupler form surface contact with the top wall and the bottom wall of the guide cylinder, and the screws pass through the flange of the lower cover of the machine head, the bottom wall of the guide cylinder and the threaded holes on the mounting portion in sequence for threaded connection. By this fixing method of the upper coupler, on the one hand, it is not necessary to set a mounting seat of the upper coupler on the upper cover or lower cover of the machine head, so there is no need to set a corresponding buckle or screw structure to fix the upper coupler, which simplifies the mounting structure of the upper coupler and makes the structure of the machine head simpler; on the other hand, by making the upper and lower mounting surfaces of the mounting part of the upper coupler form surface contact with the top wall and the bottom wall of the guide cylinder, and then fixing the guide cylinder and the mounting part with screws, the guide cylinder limits the mounting part through the top wall and the bottom wall to prevent the mounting part from rotating in the circumferential direction, and in combination with the screw fixation, the mounting part is prevented from moving in the axial and radial directions, thereby affecting the installation positioning of the upper coupler; the mounting part and the guide cylinder are in surface contact with each other, thereby increasing the contact area between the two. During the plug-in matching process of the upper and lower couplers, the upper coupler will be subjected to an axial force, and the mounting part, as a part of the upper coupler, will also be subjected to the force transmitted to the mounting part. Since the mounting part is located in the guide cylinder and contacts the top wall and the bottom wall of the guide cylinder through the upper and lower mounting surfaces, the force is dispersed to a relatively large plane, so that the mounting part and the guide cylinder are in contact with each other. Each part is evenly stressed, ensuring that the guide cylinder will not be damaged or broken due to excessive local stress, thereby causing the upper coupler to loosen or shift, affecting the plug-in fit of the upper and lower couplers. The guide cylinder is integrally arranged with the machine head, thereby improving the structural strength of the guide cylinder. The guide cylinder is not easy to be damaged during the positioning of the mounting portion, thereby ensuring the positioning effect of the guide cylinder on the mounting portion and improving the stability of the mounting portion. Finally, the upper coupler extends into the guide cylinder through the mounting portion, thereby making the distance between the upper coupler and the machine head closer, thereby reducing the overall size of the machine head, which is conducive to miniaturization of the machine head. In addition, since the center of the machine head is closer to the coupler, when the machine head is working, the upper and lower couplers are plugged in and matched, and the other parts of the machine head are pressed on the cup body as a whole. As the machine head works, except for the plug-in place of the upper and lower couplers, the vibration of the machine head will gradually increase in the direction away from the coupler, thereby reducing the distance between the coupler and the center of the machine head, thereby making the limiting effect generated by the plug-in of the upper and lower couplers better suppress the vibration intensity of the end of the machine head away from the coupler, thereby reducing the vibration of the machine head and improving the stability and noise of the soymilk machine.

[0041] In this embodiment, a motor is arranged in the lower cover of the head of the soymilk machine, the motor shaft extends downward out of the lower cover, and a crushing knife is arranged at the lower end of the motor shaft. A mounting groove is arranged on the inner wall of the transition bracket, the mounting groove is located above the motor, a signal board and an anti-overflow electrode are arranged in the mounting groove, the lower end of the anti-overflow electrode passes through the mounting groove and the lower cover of the head and extends out of the head, a temperature sensor is arranged on the bottom wall of the lower cover of the head, the temperature sensor passes through the bottom wall of the lower cover of the head and extends out of the head, and the temperature sensor and the anti-overflow electrode are electrically connected to the signal board through a wire. A spoiler covering the crushing knife and the temperature sensor is also arranged at the bottom of the lower cover of the head.

[0042] After the upper coupler is installed on the transition bracket, the wire connected to the pin in the upper coupler extends out of the upper coupler through the end of the mounting part close to the center of the machine head, and then is connected to the motor and the signal board. The soymilk machine in this embodiment also includes a cup body, which includes an inner cup and an outer shell. The outer shell is provided with a handle, and a lower coupler is provided on the top of the handle. The lower coupler is provided corresponding to the upper coupler. A power board is provided in the gap between the bottom of the inner cup and the bottom of the outer shell, and a socket is provided on the side wall of the outer shell. The socket is connected to the power board through a wiring harness. The lower coupler includes a plug spring corresponding to the pin of the upper coupler, and the plug spring is connected to a wiring harness. The wiring harness extends into the bottom of the outer shell through the inside of the handle and is connected to the power board. The cup body shell is provided with a display panel and a control panel, and the control panel is connected to the power board through a wiring harness. The control panel is provided with a number of buttons and corresponding display lights, and the display panel is provided with a pattern corresponding to the display light. A heating tube is provided on the outer side of the bottom of the inner cup, and the wiring terminal of the heating tube is connected to the power board through a wire.

[0043] By setting the signal board in the machine head and the power board on the cup body, on the one hand, the signal board is smaller in size and occupies less space in the machine head, which is conducive to the miniaturization of the machine head and convenient for consumers to take and clean; on the other hand, the signal board and the power board are set separately, the signal board is used to process weak current signals such as overflow prevention and temperature, and the power board needs to provide strong current signals for each module of the soymilk machine. Setting them separately can avoid interference of strong current signals with weak current signals and improve the accuracy of signal detection.

[0044] When in use, first add the material into the inner cup, then cover the machine head 100 on the cup body 200, and the upper coupler on the machine head is plugged into the lower coupler on the cup body. The power board supplies power to the control board through the wiring harness, and the display light of the control board is displayed on the outer shell of the cup body through the display board. Consumers click the corresponding pattern according to their needs, thereby touching the control board button to generate a control signal. On the one hand, the control signal is transmitted to the heating tube to control the heating of the heating tube, and on the other hand, it is transmitted to the machine head through the lower coupler and the upper coupler, thereby driving the motor to rotate, and then driving the crushing knife to rotate. The power board also supplies power to the signal board in the machine head through the coupler. As the soymilk machine runs, the anti-overflow electrode and temperature sensor of the machine head work and transmit the signal to the signal board. After the signal board processes the signal, it is transmitted to the power board through the coupler, so that the soymilk machine can control the working state of the motor and the heating tube according to the detection signal to prevent abnormal phenomena such as slurry overflow and material sticking to the bottom.

[0045] In this embodiment, the inner wall of the transition bracket can also be provided with a protrusion that surrounds the transition bracket, the protrusion extends toward the center of the machine head, the guide cylinder is located above the protrusion, and the bottom wall of the guide cylinder is integrally formed at the top of the protrusion. At this time, a part of the annular protrusion forms the bottom wall of the guide cylinder. In the process of positioning the guide cylinder on the mounting portion, the force on the bottom wall of the guide cylinder will be borne by the protrusion and the bottom wall together, and the protrusion is integrally formed on the transition bracket, so that the structural strength of the bottom wall of the guide cylinder is increased, thereby preventing the bottom wall of the guide cylinder from being squeezed and cracked, causing the mounting portion to loosen and fall off. The protrusion does not need to surround the transition bracket. The direction in which the guide cylinder protrudes into the machine head is A, and the length of the guide cylinder in the direction perpendicular to the A direction is less than the length of the protrusion in the same direction. At this time, the protrusion can generate sufficient support force on the bottom wall of the guide cylinder.

[0046] In this embodiment, a sealing sleeve can be sleeved on the outside of the mounting portion, and the sealing sleeve is clamped by the inner wall of the guide cylinder and the mounting portion. Specifically, the top wall, bottom wall, side wall of the guide cylinder and the upper mounting surface, lower mounting surface, and side surface of the mounting portion clamp the sealing sleeve, and the fastener is arranged away from the center of the machine head relative to the sealing sleeve. Specifically in this embodiment, the sealing sleeve is arranged at the portion between one end of the mounting portion close to the center of the machine head and the screw, and a circle of grooves can be arranged around the mounting portion at the portion between one end of the mounting portion close to the center of the machine head and the screw. The sealing sleeve is an annular sealing ring with a narrow width, and the inner diameter of the sealing sleeve is It should be smaller than the circumference of the bottom wall of the groove so that the sealing sleeve can be firmly mounted in the groove. The thickness of the sealing sleeve is greater than the depth of the groove. After the sealing sleeve is mounted in the groove, part of the sealing sleeve protrudes from the groove. When the mounting portion is extended into the guide cylinder, the portion of the sealing sleeve protruding from the groove is squeezed against the top wall, side wall and bottom wall of the guide cylinder. Since the sealing sleeve is firmly connected to the groove and the groove wall limits the sealing sleeve, the sealing sleeve will not fall out of the groove. When the mounting portion is fixedly connected to the guide cylinder by screws, the portion of the sealing sleeve protruding from the groove has an interference fit with the inner wall of the guide cylinder.

[0047] A groove is provided between the outlet terminal of the mounting part and the screw, a sealing sleeve is provided in the groove, a part of the sealing sleeve protrudes from the groove, and an inner diameter of the sealing sleeve is smaller than the circumference of the bottom wall of the groove, so that the sealing sleeve can be firmly sleeved in the groove to prevent the sealing sleeve from falling off or being squeezed and shifted; the sealing sleeve partially protrudes from the groove, and after the mounting part and the guide cylinder are fixedly installed, the part of the sealing sleeve protruding from the groove is interference fit with the inner wall of the guide cylinder to seal the gap between the mounting part and the guide cylinder, and during cleaning, water is prevented from flowing into the interior of the machine head through the guide cylinder; at the same time, the sealing sleeve is located between the outlet terminal of the mounting part and the screw, and the screw passes through the flange, the sealing gasket, and the guide cylinder in sequence from the outside of the flange. During cleaning and use, water entering from the flange, the sealing gasket, the guide cylinder and the screw connection is blocked by the sealing sleeve, so that water is prevented from entering the interior of the machine head through the guide cylinder, and the electronic components inside the machine head are prevented from being short-circuited by water.

[0048] In other embodiments, a sealing sleeve with a wider width and openings at both ends may also be provided, and the sealing sleeve is sleeved on the mounting portion from one end of the mounting portion where the wires are output, and the sealing sleeve is sleeved in the area between the one end of the mounting portion where the wires are output and the screw. Similarly, the inner diameter of the sealing sleeve is smaller than the circumference of the mounting portion so that the sealing sleeve can be securely sleeved on the mounting portion. After the sealing sleeve is sleeved on the mounting portion, the mounting portion is extended into the guide cylinder, and the sealing sleeve is squeezed against the top wall, bottom wall, and side wall of the guide cylinder. Since the sealing sleeve is firmly connected to the mounting portion, the sealing sleeve will not shift or fall off. When the mounting portion is fixedly connected to the guide cylinder, the sealing sleeve has an interference fit with the inner wall of the guide cylinder.

[0049] In other embodiments, the mounting surface of the mounting part and the inner surface of the guide cylinder may also be matched with a single surface. For example, the upper mounting surface of the mounting part may be in close contact with the top wall of the guide cylinder to achieve surface contact between the upper mounting surface and the top wall; or the lower mounting surface of the mounting part may be in close contact with the bottom wall of the guide cylinder to achieve surface contact between the lower mounting surface and the bottom wall.

[0050] For the installation and positioning of the mounting part, the mounting part can also be provided with a screw through hole, and the upper cover of the machine head is provided with a screw column corresponding to the screw through hole. The screw passes through the first through hole, the second through hole, the through hole and the screw through hole from the bottom of the flange in sequence and is fixedly connected with the screw column of the upper cover of the machine head. The screw fixes the mounting part and fixes the upper cover of the machine head with the lower cover of the machine head. At this time, the screw is located outside the machine head.

[0051] In some embodiments, the screws can also be hidden in the machine head. The machine head includes a machine head body with an upper opening and a cover body. The guide cylinder is located on the machine head body. In this case, the screws need to be first fixed to the upper coupler on the guide cylinder from the top of the guide cylinder from top to bottom, and then the cover body and the machine head body are sealed. At this time, the screws are hidden in the machine head cavity surrounded by the cover body and the machine head body. The machine head body can be a machine head lower cover, or a combination of a machine head lower cover and a transition bracket, and the cover body is the machine head upper cover.

[0052] In addition, the structure in which the screws are hidden in the machine head can also be that the machine head includes a machine head body with an opening at the lower end and a machine head lower cover, the top of the machine head lower cover is provided with a flange extending horizontally outward, and the guide cylinder is located on the machine head body. In this case, the screws need to be first fixed to the upper coupler on the guide cylinder from the bottom of the guide cylinder from bottom to top, and then the machine head body and the machine head lower cover are fixedly connected through the flange. In this case, the screws are hidden in the machine head cavity surrounded by the machine head body and the machine head lower cover. The machine head body can be the machine head upper cover, or it can be a collection of the machine head upper cover and the transition bracket.

[0053] Specifically, when there is an upper cover on the machine head, a lower cover on the machine head, and a transition bracket, the guide cylinder is located on the transition bracket, and there are two installation methods: one is to fix the upper coupler with screws from bottom to top, and then fix the transition bracket to the lower cover of the machine head. The screws can be directly passed through the through holes on the bottom wall of the guide cylinder and the screw through holes of the mounting part, and fixedly connected with the screw column on the upper cover of the machine head; the mounting part can also still be provided with threaded holes, and the screws pass through the through holes on the bottom wall of the guide cylinder and are threadedly connected with the threaded holes of the mounting part; then the upper cover on the machine head, the transition bracket and the lower cover of the machine head are fixedly connected by flanging. The other is to fix the upper coupler with screws from top to bottom, and then fix the upper cover on the machine head with the transition bracket and the lower cover of the machine head. The through holes are set on the top wall of the guide cylinder. At this time, the screws pass through the through holes on the top wall of the guide cylinder and are connected with the threaded holes of the mounting part, and then the upper cover on the machine head, the transition bracket and the lower cover of the machine head are fixedly connected.

[0054] In another embodiment, the transition bracket can be eliminated, and the guide cylinder is arranged on the upper cover of the machine head. A guide cylinder extending horizontally toward the center of the machine head is arranged inside the upper cover of the machine head. The structure of the guide cylinder is consistent with the aforementioned embodiment. Specifically, the guide cylinder is located on the upper cover of the machine head. The guide cylinder includes a top wall and a bottom wall. The top wall extends into the interior of the machine head at one end close to the center of the machine head, and extends to the side wall of the upper cover on the machine head at one end away from the center of the machine head. The bottom wall extends into the interior of the machine head at one end close to the center of the machine head, and extends to the side wall of the upper cover on the machine head at one end away from the center of the machine head. The shape of the top wall and the bottom wall is approximately a rectangle with a moderate length-to-width ratio. The top wall and the bottom wall are connected by the side walls on both sides. The bottom wall of the guide cylinder is provided with a through hole penetrating the bottom wall. The contours of the top wall and the bottom wall of the guide cylinder correspond to the contours of the upper mounting surface and the lower mounting surface of the mounting part of the upper coupler. The end of the guide tube close to the center of the machine head and the end away from the center of the machine head are open structures. The opening of the end of the guide tube away from the center of the machine head is a mounting opening formed on the side wall of the upper cover of the machine head. The mounting opening is respectively enclosed by the ends of the top wall, bottom wall and side wall of the guide tube away from the center of the machine head. This means that the guide tube passes through the side wall of the upper cover of the machine head, and the opening of the end of the guide tube close to the center of the machine head is enclosed by the ends of the top wall, bottom wall and side wall of the guide tube close to the center of the machine head. The wire extending from the upper coupler extends into the interior of the machine head from the opening of the end of the guide tube close to the center of the machine head. The matching mode of the mounting surface of the mounting part and the inner wall of the guide tube is the same as the aforementioned embodiment. The top wall and bottom wall of the guide tube can be respectively tightly matched with the upper mounting surface and the lower mounting surface of the mounting part to form a surface contact, or the top wall of the guide tube and the upper mounting surface of the mounting part or the bottom wall of the guide tube and the lower mounting surface of the mounting part can be tightly matched to form a surface contact.

[0055] Similarly, the inner side wall of the upper cover of the machine head can be provided with an installation groove, and the installation groove is provided with an anti-overflow electrode and a signal plate. At this time, the bottom of the upper cover of the machine head is provided with an assembly surface that matches the flange of the lower cover of the machine head, and a sealing gasket is provided on the flange. The upper cover of the machine head presses the sealing gasket onto the flange through the assembly surface, and the upper cover of the machine head and the lower cover of the machine head are fixedly connected by screws. The flange of the lower cover of the machine head and the sealing gasket are provided with corresponding screw through holes, and screw columns corresponding to the screw through holes are provided in the upper cover of the machine head. After the screws pass through the screw through holes of the flange and the sealing gasket in turn, they are fixedly connected with the screw columns.

[0056] Regarding the installation of the mounting part, the first through hole is provided on the flange, the second through hole is provided on the sealing gasket, and the through hole is provided on the bottom wall of the guide cylinder. The screw passes through the first through hole, the second through hole, and the through hole in sequence from the bottom of the flange and is threadedly connected with the threaded hole of the mounting part; alternatively, the mounting part is provided with a threaded through hole, and the upper cover of the machine head is provided with a screw column. The screw passes through the first through hole, the second through hole, the through hole and the threaded through hole of the mounting part in sequence from the bottom of the flange and is threadedly connected with the screw column; at this time, the screw is located outside the machine head.

[0057] Screws can also be set in the machine head, and the installation method is to first fix the upper coupler with the screws from the bottom of the guide cylinder, and then fix the upper cover of the machine head with the lower cover of the machine head by flanging. Specifically, the screws can be passed through the through hole in the bottom wall of the guide cylinder and threadedly connected with the threaded hole of the mounting part, and then the upper cover of the machine head and the lower cover of the machine head are fixedly connected by flanging; or the mounting part can be provided with a threaded through hole, and the upper cover of the machine head is provided with a screw column. After the screws pass through the through hole and the threaded through hole in turn, they are threadedly connected with the screw column of the upper cover of the machine head, and then the upper cover of the machine head and the lower cover of the machine head are fixedly connected by flanging.

[0058] In another embodiment, a boss surrounding the flange is provided on the top flange of the lower cover of the machine head, and the guide tube is located on the boss. The structure of the guide tube is as described above. Specifically, the inner wall of the boss extends inward to form the guide tube, and the guide tube includes a top wall and a bottom wall. The top wall extends into the interior of the machine head at one end close to the center of the machine head, and the top wall extends to the side wall of the boss at one end away from the center of the machine head. The bottom wall extends into the interior of the machine head at one end close to the center of the machine head, and the bottom wall extends to the side wall of the boss at one end away from the center of the machine head. The shape of the top wall and the bottom wall is approximately a rectangle with a moderate length-to-width ratio. The top wall and the bottom wall are connected by the side walls on both sides. The bottom wall of the guide tube is provided with a through hole penetrating the bottom wall. The contours of the top wall and the bottom wall of the guide tube correspond to the contours of the upper mounting surface and the lower mounting surface of the mounting part of the upper coupler. The end of the guide tube close to the center of the machine head and the end away from the center of the machine head are open structures. The opening of the end of the guide tube away from the center of the machine head is a mounting opening formed on the outer wall of the boss. The mounting opening is respectively enclosed by the ends of the top wall, bottom wall, and side wall of the guide tube away from the center of the machine head. This means that the guide tube passes through the side wall of the boss, and the opening of the end of the guide tube close to the center of the machine head is enclosed by the ends of the top wall, bottom wall, and side wall of the guide tube close to the center of the machine head. The wire extending from the upper coupler extends into the interior of the machine head from the opening of the end of the guide tube close to the center of the machine head. The matching mode of the mounting surface of the mounting part and the inner wall of the guide tube is the same as that of the aforementioned embodiment. The top wall and bottom wall of the guide tube can be respectively tightly matched with the upper mounting surface and the lower mounting surface of the mounting part to form a surface contact, or the top wall of the guide tube and the upper mounting surface of the mounting part or the bottom wall of the guide tube and the lower mounting surface of the mounting part can be tightly matched to form a surface contact.

[0059] In this embodiment, the lower cover of the machine head can be a single-layer metal lower cover, the boss is arranged on the flange at the top of the metal lower cover, the boss can be integrally formed on the flange, the boss and the flange are provided with a plurality of screw through holes, the upper cover of the machine head is provided with corresponding screw columns, the screws pass through the screw through holes of the flange and the boss and are fixedly connected with the screw columns to fix the upper cover of the machine head with the lower cover of the machine head. For the installation of the mounting part, the mounting part can be provided with threaded holes, the bottom wall of the guide cylinder and the flange are correspondingly provided with threaded through holes, the screws pass through the flange and the bottom wall of the guide cylinder, and are threadedly connected with the threaded holes; the mounting part can also be provided with threaded through holes, the upper cover of the machine head is correspondingly provided with screw columns, the screws pass through the flange, the bottom wall of the guide cylinder, and the mounting part, and are threadedly connected with the screw columns; in this case, the screws are located outside the machine head.

[0060] Similarly, when the guide cylinder is provided with a threaded hole, the screw can be set in the machine head, and the top wall of the guide cylinder is provided with a screw through hole. The screw first passes through the top wall of the guide cylinder and is threadedly connected with the threaded hole, and then the upper cover of the machine head and the lower cover of the machine head are fixedly connected.

[0061] The lower cover of the machine head can also be a double-layer lower cover, that is, the inner layer is provided with a plastic lower cover for accommodating the motor, and the outer layer is provided with a metal lower cover. The tops of the plastic lower cover and the metal lower cover are both provided with flanges, and the boss is provided on the plastic flange at the top of the plastic lower cover. The plastic flange is supported on the metal flange. The boss can be integrally formed on the plastic flange. The boss, the plastic flange, and the metal flange are provided with a number of screw through holes. The upper cover of the machine head is provided with corresponding screw columns. The screws pass through the metal flange, the plastic flange, and the screw through holes of the boss and are fixedly connected with the screw columns. For the installation of the mounting part, threaded holes can be provided on the mounting part, and the bottom wall of the guide cylinder and the plastic flange and the metal flange are correspondingly provided with threaded through holes. The screws pass through the metal flange, the plastic flange, and the bottom wall of the guide cylinder and are threadedly connected with the threaded holes; the mounting part can also be provided with threaded through holes, and the upper cover of the machine head is provided with corresponding screw columns. The screws pass through the metal flange, the plastic flange, the bottom wall of the guide cylinder, and the mounting part and are threadedly connected with the screw columns; at this time, the screws are located outside the machine head.

[0062] Similarly, when the mounting portion is provided with a threaded hole, a screw can be provided in the machine head, and a screw through hole is provided on the top wall of the guide tube. After the screw passes through the top wall of the guide tube and is threadedly connected with the threaded hole, the upper cover of the machine head and the lower cover of the machine head are fixedly connected.

[0063] In another embodiment, a protective cover with a bottom opening can be provided on the outside of the machine head, the protective cover is provided on the outside of the upper coupler body, a first limiting portion is provided on the side wall of the body away from the center of the machine head, a second limiting portion is provided on the inner side wall of the protective cover, the first limiting portion and the second limiting portion are stopper-matched or snap-connected; the first limiting portion can be a convex rib protruding outward, the second limiting portion can be a peripheral edge extending inward from the bottom of the protective cover, and the convex rib abuts against the peripheral edge; the second limiting portion can also be a slot, and the convex rib can be inserted into the slot; the second limiting portion can also be a protrusion extending inward, and the convex rib abuts against the protrusion; Figure 6 As shown, the first limiting portion may also be a slot 1025, and the second limiting portion is a convex rib 1012 extending inwardly, and the convex rib may be inserted into the slot.

[0064] By arranging a protective cover on the head and arranged on the outside of the main body, the upper coupler body can be prevented from being bumped or damaged, thereby improving the service life of the coupler; a first limiting portion and a second limiting portion that cooperate with each other are arranged on the side wall of the main body and the inner wall of the protective cover, and the first limiting portion and the second limiting portion form a stop fit or a snap connection. After the mounting portion is extended into the guide cylinder, the first limiting portion and the second limiting portion cooperate to pre-position the upper coupler, thereby preventing the upper coupler from moving when using a fastener for positioning, resulting in the fastener being unable to accurately pass through the guide cylinder and the mounting portion to install and position the mounting portion, so that the fastener can quickly and accurately position the mounting portion, thereby improving installation efficiency.

[0065] Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A soybean milk machine, comprising a machine head and a cup body, wherein the machine head cover is fitted on the cup body, an upper coupler is arranged on the machine head, and a lower coupler is arranged on the cup body to be plugged and matched with the upper coupler, characterized in that: The inner wall of the machine head is integrally formed with a guide cylinder, one end of which extends toward the center of the machine head, and the other end of the guide cylinder penetrates the side wall of the machine head and forms a mounting opening on the outer wall of the machine head. The upper coupler includes a main body and a mounting portion protruding outward from the main body, the mounting portion includes a mounting surface, and the mounting portion extends into the guide cylinder through the mounting opening. The fastener passes through the guide cylinder and the mounting portion to fix the mounting portion on the guide cylinder, and makes the mounting surface fit tightly with the inner surface of the guide cylinder. The length of the guide cylinder protruding into the interior of the machine head is at least 5 mm.

2. The soymilk machine according to claim 1, characterized in that: A sealing sleeve is sleeved on the outer side of the mounting portion, and the sealing sleeve is clamped between the mounting portion and the inner wall of the guide cylinder.

3. The soymilk machine according to claim 2, characterized in that: The installation portion is surrounded by a groove, and the sealing sleeve is sleeved in the groove.

4. The soymilk machine according to claim 2, characterized in that: The fastener is located outside the machine head and is arranged away from the center of the machine head relative to the sealing sleeve. The machine head includes a holding part that is held on the cup body. The fastener passes through the holding part and the guide cylinder in sequence to fix the mounting part on the guide cylinder.

5. The soymilk machine according to claim 1, characterized in that: The machine head comprises a machine head upper cover and a machine head lower cover fixedly connected to the machine head upper cover, and the guide cylinder is located on the machine head upper cover; Alternatively, the machine head comprises a machine head upper cover, a machine head lower cover, and a transition bracket, the transition bracket is clamped between the machine head upper cover and the machine head lower cover, the guide cylinder is located on the transition bracket, the inner side wall of the transition bracket is provided with a protrusion extending toward the center of the machine head and surrounding the transition bracket, the guide cylinder is located above the protrusion, and the bottom wall of the guide cylinder is integrally formed on the top of the protrusion; Alternatively, the machine head comprises a machine head lower cover, a flange extending horizontally outward is arranged on the top of the machine head lower cover, a boss surrounding the flange is arranged on the flange, and the guide cylinder is located on the boss.

6. The soymilk machine according to claim 1, characterized in that: The machine head comprises a machine head body and a machine head lower cover, a flange extending horizontally outward is arranged on the top of the machine head lower cover, the guide cylinder is located on the machine head body, the machine head body and the machine head lower cover are fixedly connected by the flange, a downwardly extending limiting portion is arranged on the lower end edge of the mounting opening located on the outside of the machine head body, the outer edge of the flange is pressed against the inner side of the limiting portion, and the side wall of the main body is pressed against the outer side of the limiting portion.

7. The soymilk machine according to claim 1, characterized in that: The fastener is hidden in the nose.

8. The soymilk machine according to claim 7, characterized in that: The machine head comprises a machine head body with an opening at the upper end and a cover body, the guide cylinder is located on the machine head body, and after the fastener fixes the upper coupler to the guide cylinder from the top of the guide cylinder from top to bottom, the cover body and the machine head body are closed and sealed, so that the fastener is hidden in the machine head; or, the machine head comprises a machine head body with an opening at the lower end and a machine head lower cover, the top of the machine head lower cover is provided with a flange extending horizontally outward, the guide cylinder is located on the machine head body, and after the fastener fixes the upper coupler to the guide cylinder from the bottom of the guide cylinder from bottom to top, the machine head lower cover is fixedly connected to the machine head body through the flange, so that the fastener is hidden in the machine head.

9. The soymilk machine according to claim 1, characterized in that: The machine head is provided with a protective cover with an opening at the bottom, and the protective cover is arranged outside the main body.

10. The soymilk machine according to claim 9, characterized in that: A first limiting portion is arranged on the side wall of the main body away from the center of the machine head, and a second limiting portion is arranged on the inner wall of the protective cover. After the protective cover is arranged on the outer side of the main body, the first limiting portion and the second limiting portion are stopper-matched or snap-connected.

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