A dustproof and waterproof coupler with a switchable connection circuit

Abstract

The present application discloses a dust-proof and waterproof coupler with a switchable connection circuit, which includes a lower coupler and an upper coupler that is inserted and adapted to the lower coupler. The upper coupler is provided with insulating pins, and the lower coupler is provided with a normally closed power-on wire group that is normally closed for power-on and can be disconnected from power-on when inserted by the insulating pins. The lower coupler includes a lower coupler housing. A through hole extending downward is opened on the upper side of the lower coupler housing, and a mounting groove opening located on the lower side of the through hole is also opened; the lower coupler further includes a baffle plate and an elastic telescopic member; the baffle plate is arranged in the mounting groove opening, and a communication hole adapted to the through hole is opened thereon; the elastic telescopic member is arranged between the baffle plate and the inside of the mounting groove opening for telescopically moving the baffle plate to open and close the through hole. The present application can not only meet the use requirements of switching the connection circuit, but also achieve the full-sealed dust-proof and waterproof effect, thereby maximizing the practicability and applicability of the present application.

Description

Technical Field

[0001] The present application relates to the technical field of couplers, and more specifically to a dustproof and waterproof coupler with a switchable connection circuit. Background Art

[0002] With the increasing improvement of people's living standards, there are more and more types of cooking machines on the market. The functions of the cooking machine mainly include, but are not limited to: making soy milk, grinding powder, squeezing juice, making rice paste, mincing meat, making shaved ice, making coffee, and / or preparing facial masks, etc.

[0003] Existing cooking machines are not only favored by consumers because they have both stirring and crushing functions and heating functions, but most of the electronic control modules connected to the heating plate for electronically controlling the heating plate use electronic control PCB boards to achieve the electronic control function. Therefore, there are problems such as high production cost, inconvenient assembly production, inability to further improve production efficiency, and poor dustproof and waterproof effects of the couplers used in existing cooking machine electronic control modules. For this reason, those skilled in the art urgently need to develop a dustproof and waterproof coupler with a switchable connection circuit to meet the actual use requirements of cooking machines. Summary of the Invention

[0004] The present application aims to solve the above-mentioned existing technical problems and provides a dustproof and waterproof coupler with a switchable connection circuit.

[0005] To solve the above technical problems, the present application is achieved through the following technical solutions:

[0006] A dustproof and waterproof coupler with a switchable connection circuit includes a lower coupler and an upper coupler that is inserted and adapted to the lower coupler. The upper coupler is provided with insulating pins, and the lower coupler is provided with a normally closed power-on wire group that is normally closed for power-on and can be disconnected from power-on when the insulating pins are inserted.

[0007] The lower coupler includes a lower coupler housing. The upper side of the lower coupler housing is provided with a through hole extending downward, and a receiving groove is also provided below the through hole.

[0008] The lower coupler further includes a baffle and an elastic telescopic member; the baffle is disposed in the receiving groove, and a communication hole adapted to the through hole is provided thereon.

[0009] The elastic telescopic member is disposed between the baffle and the inside of the receiving groove, and is used to telescopically move the baffle to open and close the through hole.

[0010] The dustproof and waterproof coupler of the switchable connection circuit as described above, wherein the normally closed power wire group includes a normally closed front terminal and a normally closed rear terminal arranged facing each other front and back. The upper end of the normally closed front terminal contacts the upper end of the normally closed rear terminal, and a guiding opening for guiding the insertion of the insulating pin is formed between the upper ends of the two.

[0011] The dustproof and waterproof coupler of the switchable connection circuit as described above, wherein a normally closed front rear convex contact protruding backward is provided at the rear side of the upper end of the normally closed front terminal;

[0012] A normally closed rear front convex contact protruding forward and adapted to contact the normally closed front rear convex contact is provided at the front side of the upper end of the normally closed rear terminal.

[0013] The dustproof and waterproof coupler of the switchable connection circuit as described above, wherein both the normally closed front rear convex contact and the normally closed rear front convex contact are silver contacts.

[0014] The dustproof and waterproof coupler of the switchable connection circuit as described above, wherein the guiding opening is a horn-shaped opening.

[0015] The dustproof and waterproof coupler of the switchable connection circuit as described above, wherein the normally closed power wire group further includes:

[0016] A normally closed front wiring, one end of which is connected to the power transmission end of the power supply, and the other end is connected to the normally closed front terminal;

[0017] A normally closed rear wiring, one end of which is connected to the normally closed rear terminal, and the other end is connected to the access end of the on-off switch.

[0018] The dustproof and waterproof coupler of the switchable connection circuit as described above, wherein an insertion power wire group that can be inserted and matched with the power connection pin for power connection is further provided on the lower coupler.

[0019] The dustproof and waterproof coupler of the switchable connection circuit as described above, wherein an upper convex part protruding upward is provided on the right side of the middle of the baffle, and an inclined slope inclined downward is provided on the right side of the upper convex part;

[0020] A limit notch for adaptively limiting the upper convex part to block the further movement of the baffle is formed on the upper side of the lower coupler housing.

[0021] The dustproof and waterproof coupler of the switchable connection circuit as described above, wherein the lower coupler further includes a terminal connection body arranged inside the lower coupler housing;

[0022] The normally closed energized wire group includes a normally closed front-position deformable terminal disposed in the middle of the front side of the terminal connector body and located between the terminal connector body and the terminal connection housing, and a normally closed rear-position fixed terminal disposed in the middle of the rear side of the terminal connector body and located between the terminal connector body and the terminal connection housing;

[0023] The upper end of the normally closed rear-position fixed terminal is provided with a normally closed rear-position extended contact portion that bypasses the middle side wall of the terminal connection housing from back to front and extends downward;

[0024] The upper end of the normally closed front-position deformable terminal is provided with a normally closed front-position elastic deformation portion that is inclined from front to back and downward, can undergo elastic deformation, and is used to contact the normally closed rear-position extended contact portion to energize;

[0025] When the upper coupler is plugged and adapted to the lower coupler, the insulating pin contacts the normally closed front-position elastic deformation portion and presses down the normally closed front-position elastic deformation portion along the inclination direction of the normally closed front-position elastic deformation portion, causing it to deform and retract forward inward, so as to allow the insulating pin to be inserted between the normally closed front-position elastic deformation portion and the normally closed rear-position extended contact portion to disconnect the contact connection between the normally closed front-position elastic deformation portion and the normally closed rear-position extended contact portion.

[0026] For the dust-proof and waterproof coupler with a switchable connection circuit as described above, the lower end of the insulating pin is provided with a rear lower inclined surface that is inclined from front to back and downward.

[0027] Compared with the prior art, the above application has the following advantages:

[0028] 1. When the cooking machine head is closed on the cooking machine body in this application, the insulating pin is inserted into the lower coupler to mechanically disconnect the normally closed energized wire group, thereby achieving the purpose of power-off; when the cooking machine head is removed from the cooking machine body, the insulating pin is withdrawn from the lower coupler, that is, the normally closed energized wire group is connected to the circuit, and thus the purpose of regulating the connection circuit can be achieved; when the upper coupler is plugged and adapted to the lower coupler, the baffle is pressed down and squeezed into the accommodation notch, and then the communication hole on the baffle communicates with the through hole on the lower coupler housing, that is, the through hole is opened; when the upper coupler is removed upward from the lower coupler and the baffle extends out of the accommodation notch, the baffle can close the through hole, which can not only facilitate the insertion of the power connection pin on the upper coupler into the lower coupler, but also achieve the full-sealed dust-proof and waterproof function, thereby maximizing the safety and practicality of use.

[0029] 2. When the cooking machine head is removed from the cooking machine body in this application, the insulating pin is withdrawn from the lower coupler, that is, the normally closed power line group is connected to the circuit. Therefore, the heating plate on the cooking machine body can be energized to generate heat for cooking food, boiling water, etc., endowing the cooking machine with more functions and greatly improving its practicability and applicability. Brief Description of the Drawings

[0030] Figure 1 is a perspective view of the cooking machine of this application.

[0031] Figure 2 is a perspective view of the cooking machine body in the cooking machine of this application.

[0032] Figure 3 is a perspective view of the cooking machine head in the cooking machine of this application.

[0033] Figure 4 is an exploded view of the coupler of this application.

[0034] Figure 5 is another exploded view of the coupler of this application.

[0035] Figure 6 is Figure 5 a partially enlarged view of Figure Ⅰ .

[0036] Figure 7 is Figure 5 a partially enlarged view of Figure Ⅱ .

[0037] Figure 8 is a cross-sectional view of the coupler of this application after partial disassembly.

[0038] Figure 9 is a cross-sectional view of the lower coupler in the coupler of this application.

[0039] Figure 10 is a perspective view of the coupler of this application in the engaged state of the normally closed front terminal and the normally closed rear terminal.

[0040] Figure 11 is a perspective view of the normally closed front terminal in the coupler of this application.

[0041] Figure 12 is a perspective view of the normally closed rear terminal in the coupler of this application.

[0042] Figure 13 is a perspective view of the upper coupler in the coupler of this application.

[0043] Figure 14 is a partial cross-sectional view of the coupler of this application, mainly showing another embodiment of the normally closed power line group. Detailed implementation manners

[0044] The present application will be further described in detail below in conjunction with the accompanying drawings through specific implementation manners.

[0045] As Figures 1 to 13 shown, a cooking machine includes a cooking machine body 300, a cooking machine head 400 provided on the cooking machine body 300, and a dustproof and waterproof coupler with a switchable connection circuit provided between the cooking machine body 300 and the cooking machine head 400.

[0046] The dustproof and waterproof coupler with a switchable connection circuit includes a lower coupler 2 provided on the cooking machine body 300, and an upper coupler 1 provided on the cooking machine head 400 and adapted to be plugged into the lower coupler 2; an insulating pin 101 is provided on the upper coupler 1, and a normally closed energizing wire group 201 that is normally closed and energized and can be disconnected from the energization by the insertion of the insulating pin 101 is provided on the lower coupler 2;

[0047] The lower coupler 2 includes a lower coupler housing 21, a through hole 211 extending downward is opened on the upper side of the lower coupler housing 21, and a receiving notch 212 is further opened on the lower side of the through hole 211;

[0048] The lower coupler further includes a baffle 23 and an elastic telescopic member 24; the baffle 23 is provided in the receiving notch 212, and a communication hole 231 adapted to the through hole 211 is opened thereon;

[0049] The elastic telescopic member 24 is provided between the baffle 23 and the inside of the receiving notch 212 for telescopically moving the baffle 23 to open and close the through hole 211.

[0050] When the cooking machine head 400 is covered on the cooking machine body 300 in this application, the insulating pin 101 is inserted into the lower coupler 2 to mechanically cut off the normally closed power wire group 201, thus achieving the purpose of power-off; when the cooking machine head 400 is removed from the cooking machine body 300, the insulating pin 101 is withdrawn from the lower coupler 2, that is, the normally closed power wire group 201 is connected to the circuit, and then the purpose of regulating the connection circuit can be achieved; when the upper coupler 1 is adaptively plugged into the lower coupler 2, the baffle 23 is pressed down and squeezed into the accommodation notch 212, and then the communication hole 231 on the baffle 23 communicates with the through hole 211 on the lower coupler housing 21, that is, the through hole 211 is opened; when the upper coupler 1 is lifted out of the lower coupler 1, when the baffle 23 extends out of the accommodation notch 212, the baffle 23 can close the through hole 211, which can not only facilitate the insertion of the power connection pin 102 on the upper coupler 1 into the lower coupler 2, but also achieve the function of full sealing and dust and water prevention, thereby maximizing the safety and practicality of use.

[0051] Further, the number of the through holes 211 and the communication holes 231 is multiple, and they can be used to make way for the power connection pin 102 and the insulating pin 101 to be inserted into the lower coupler 2, so as to meet the plug-in use requirements.

[0052] Furthermore, the normally closed power wire group 201 includes a normally closed front terminal 2011 and a normally closed rear terminal 2012 arranged facing each other front and back. The upper end of the normally closed front terminal 2011 contacts the upper end of the normally closed rear terminal 2012, and a guiding opening 2010 for guiding the insertion of the insulating pin 101 is formed between the upper ends of the two. The guiding opening 2010 is preferably a horn-shaped opening. The advantage of using a horn-shaped opening is that it can greatly facilitate the insertion of the insulating pin 101 to cut off the normally closed front terminal 2011 and the normally closed rear terminal 2012, and then facilitate the purpose of separating and power-off.

[0053] Furthermore, the insulating pin 101 is made of insulating material, preferably plastic. Its advantages are that plastic not only has excellent insulating performance, but also has outstanding thermoplasticity, which is very convenient for actual production.

[0054] Furthermore, a normally closed front rear convex contact 20111 protruding backward is provided at the rear side of the upper end of the normally closed front terminal 2011;

[0055] A normally closed rear front convex contact 20121 protruding forward and capable of being adaptively contacted with the normally closed front rear convex contact 20111 is provided at the front side of the upper end of the normally closed rear terminal 2012.

[0056] The normally-closed front-position rear-convex contact 20111 and the normally-closed rear-position front-convex contact 20121 are both silver contacts. The advantage is that the silver contacts are made of metallic silver and have excellent electrical conductivity.

[0057] Furthermore, the normally-closed energized wire group 201 further includes a normally-closed front-position wiring 2013 and a normally-closed rear-position wiring 2014;

[0058] One end of the normally-closed front-position wiring 2013 is connected to the power transmission end of the power supply, and the other end is connected to the normally-closed front-position terminal 2011; one end of the normally-closed rear-position wiring 2014 is connected to the normally-closed rear-position terminal 2012, and the other end is connected to the access end of the on-off switch 3001 provided on the body 300 of the cooking machine;

[0059] The output end of the on-off switch 3001 is connected to a heating plate provided on the body 300 of the cooking machine.

[0060] The purpose of adopting the above series circuit structure in this application is to connect the normally-closed front-position terminal 2011, the normally-closed rear-position terminal 2012, the on-off switch 3 and the heating plate in series, so that when the cooking machine head 400 is covered on the cooking machine body 300, the insulating pin 101 is inserted to separate the normally-closed front-position terminal 2011 and the normally-closed rear-position terminal 2012, so that the heating plate is in a power-off failure state;

[0061] When the cooking machine head 400 is moved away from the cooking machine body 300, the normally-closed front-position terminal 2011 and the normally-closed rear-position terminal 2012 are in closed contact, and then the on-off switch 3001 can be used to solely control whether the heating plate is powered on for heating, which can not only achieve the regulation purpose, but also avoid the heating plate from continuously generating heat.

[0062] Furthermore, a plurality of power connection pins 102 are also provided on the upper coupler 1, and an insertion power connection wire group 202 that can be inserted and matched with the power connection pins 102 for power connection is also provided on the lower coupler 2.

[0063] The lower coupler 2 further includes a terminal connection body 22 provided in the lower coupler housing 21.

[0064] Furthermore, both the through hole 211 and the communication hole 231 are rectangular holes, or they can also be circular holes, the purpose of which is to meet more actual use requirements.

[0065] Furthermore, a upwardly convex upper convex part 232 is provided on the right side of the middle of the baffle 23, and an inclined slope 2321 that slopes downward is provided on the right side of the upper convex part 232;

[0066] A limiting notch 213 is provided on the upper side of the lower coupler housing 21 for fitting and limiting the upper convex portion 232 to block the further movement of the baffle 23. The advantage is that when the upper coupler 1 is moved downward and inserted into the lower coupler 2, the inclined ramp 2321 on the upper convex portion 232 can be pushed to squeeze the baffle 23 into the accommodation notch 212. Conversely, the elastic telescopic member 24 can be used to reset and push out the baffle 23, thereby realizing the automatic telescopic movement of the baffle 23.

[0067] As Figure 14 shown, the normally closed energized wire group 201 can also be another embodiment, specifically: the normally closed energized wire group 201 includes a normally closed front-position deformable terminal 2015 provided in the middle of the front side of the terminal connection body 22 and located between the terminal connection body 22 and the terminal connection housing 21, and a normally closed rear-position fixed terminal 2016 provided in the middle of the rear side of the terminal connection body 22 and located between the terminal connection body 22 and the terminal connection housing 21;

[0068] The upper end of the normally closed rear-position fixed terminal 2016 is provided with a normally closed rear-position extended contact portion 20161 that bypasses the middle side wall of the terminal connection housing 21 from back to front and extends downward;

[0069] The upper end of the normally closed front-position deformable terminal 2015 is provided with a normally closed front-position elastic deformation portion 20151 that is inclined from front to back downward, can undergo elastic deformation, and is used to contact the normally closed rear-position extended contact portion 20161 to conduct electricity;

[0070] When the upper coupler 1 is plugged and adapted to the lower coupler 2, the insulating pin 101 contacts the normally closed front-position elastic deformation portion 20151 and presses the normally closed front-position elastic deformation portion 20151 downward along the inclined direction of the normally closed front-position elastic deformation portion 20151, causing it to deform forward and inward to make room for the insulating pin 101 to be inserted between the normally closed front-position elastic deformation portion 20151 and the normally closed rear-position extended contact portion 20161 to disconnect the contact connection between the normally closed front-position elastic deformation portion 20151 and the normally closed rear-position extended contact portion 20161.

[0071] Furthermore, the lower end of the insulating pin 101 is provided with a rear lower inclined surface (not shown in the figure) that is inclined from front to back downward, and the advantage is that it is convenient for the insulating pin 101 to be inserted downward to squeeze the normally closed front-position elastic deformation portion 20151, so that the normally closed front-position elastic deformation portion 20151 deforms forward and inward.

[0072] In summary, the embodiments of the present application have been described in detail, but the present application is not limited to the above embodiments. Even if various changes are made to the present application, they still fall within the protection scope of the present application.

Claims

1. A dust-proof and waterproof coupler with a switchable connection circuit, comprising a lower coupler (2) and an upper coupler (1) inserted and adapted to the lower coupler (2). Characterized in that: The upper coupler (1) is provided with an insulating pin (101) and a power connection pin (102), and the lower coupler (2) is provided with a normally closed power connection wire group (201) that is normally closed and energized and can be inserted by the insulating pin (101) to disconnect the contact and energize. The lower coupler (2) includes a lower coupler housing (21). A through hole (211) extending downward is opened on the upper side of the lower coupler housing (21), and a mounting groove opening (212) is also opened on the lower side of the through hole (211). The lower coupler further includes a baffle (23) and an elastic telescopic member (24); the baffle (23) is arranged in the mounting groove opening (212), and a communication hole (231) adapted to the through hole (211) is opened thereon. The elastic telescopic member (24) is arranged between the baffle (23) and the inside of the mounting groove opening (212) for telescopic movement of the baffle (23) to open and close the through hole (211). The lower coupler (2) further includes a terminal connection body (22) arranged in the lower coupler housing (21). The normally closed power connection wire group (201) includes a normally closed front-position deformable terminal (2015) arranged in the middle of the front side of the terminal connection body (22) and between the terminal connection body (22) and the lower coupler housing (21), and a normally closed rear-position fixed terminal (2016) arranged in the middle of the rear side of the terminal connection body (22) and between the terminal connection body (22) and the lower coupler housing (21). The upper end of the normally closed rear-position fixed terminal (2016) is provided with a normally closed rear-position extended contact portion (20161) that bypasses the middle side wall of the terminal connection body (22) from back to front and extends downward. The upper end of the normally closed front-position deformable terminal (2015) is provided with a normally closed front-position elastic deformation portion (20151) that is inclined from front to back and downward, can undergo elastic deformation, and is used to contact the normally closed rear-position extended contact portion (20161) to energize. When the upper coupler (1) is inserted and adapted to the lower coupler (2), the insulating pin (101) contacts the normally closed front-position elastic deformation portion (20151) and presses the normally closed front-position elastic deformation portion (20151) along the inclination direction of the normally closed front-position elastic deformation portion (20151) to deform forward and inward, so as to make room for the insulating pin (101) to be inserted between the normally closed front-position elastic deformation portion (20151) and the normally closed rear-position extended contact portion (20161) to disconnect the contact connection between the normally closed front-position elastic deformation portion (20151) and the normally closed rear-position extended contact portion (20161). The lower end of the insulating pin (101) is provided with a rear lower inclined surface that is inclined from front to back and downward.

2. The dust-proof and waterproof coupler with a switchable connection circuit according to claim 1. Characterized in that: The normally-closed energized wire group (201) includes a normally-closed front terminal (2011) and a normally-closed rear terminal (2012) arranged facing each other front and back. The upper end of the normally-closed front terminal (2011) contacts the upper end of the normally-closed rear terminal (2012), and a guiding opening (2010) for guiding the insertion of the insulating pin (101) is formed between the upper ends of the two.

3. The dustproof and waterproof coupler with a switchable connection circuit according to claim 2, characterized in that: A normally-closed front rear convex contact (20111) protruding backward is provided at the rear side of the upper end of the normally-closed front terminal (2011); A normally-closed rear front convex contact (20121) protruding forward and adapted to contact the normally-closed front rear convex contact (20111) is provided at the front side of the upper end of the normally-closed rear terminal (2012).

4. The dustproof and waterproof coupler with a switchable connection circuit according to claim 3, characterized in that: Both the normally-closed front rear convex contact (20111) and the normally-closed rear front convex contact (20121) are silver contacts.

5. The dustproof and waterproof coupler with a switchable connection circuit according to claim 2, characterized in that: The guiding opening (2010) is a flared opening.

6. The dustproof and waterproof coupler with a switchable connection circuit according to claim 2, characterized in that: The normally-closed energized wire group (201) further includes: A normally-closed front wiring (2013), one end of which is connected to the power transmission end and the other end is connected to the normally-closed front terminal (2011); A normally-closed rear wiring (2014), one end of which is connected to the normally-closed rear terminal (2012) and the other end is connected to the on-off switch access end.

7. The dustproof and waterproof coupler with a switchable connection circuit according to claim 1, characterized in that: An insertion energized wire group (202) that can be inserted and matched with the power connection pin (102) for power connection is further provided on the lower coupler (2).

8. The dustproof and waterproof coupler with a switchable connection circuit according to claim 1, characterized in that: An upper convex part (232) protruding upward is provided on the right side of the middle of the baffle (23), and an inclined slope (2321) inclined downward is provided on the right side of the upper convex part (232); A limiting notch (213) for adaptively limiting the upper convex part (232) to block the further movement of the baffle (23) is formed on the upper side of the lower coupler housing (21).

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