High-pressure-resistant quick connector suitable for household appliances

Abstract

The high-pressure-resistant quick connector comprises a connector body, a sealing assembly and a clamping jaw piece are fixedly arranged in the connecting end of the connector body, the sealing assembly is used for fastening and sealing a pipeline, and the outlet end of the sealing assembly is provided with a blocking part abutting against the end of the pipeline. The clamping jaw piece is arranged close to the other end of the sealing assembly. A fastening assembly is arranged at the connecting end, extends into the connector body and abuts against the end face of the sealing assembly, and the fastening assembly is in threaded connection with the connecting end. An unlocking piston is arranged in the fastening assembly in a penetrating mode, one end of the unlocking piston extends into the connector body and abuts against a fixing claw of the clamping claw piece, the other end of the unlocking piston extends out of the fastening assembly, in the using process, only a pipeline needs to be inserted from the unlocking piston, operation is very easy, and working efficiency is greatly improved. Besides, the connector body and the fastening assembly are connected in a threaded mode, and selected manufacturing materials are high-pressure-resistant and high-strength, so that higher pressure can be borne under mutual meshing of the threads, and the risk of falling off is thoroughly solved.

Description

Technical Field

[0001] The invention belongs to the technical field of connecting valves, in particular to a high-pressure resistant quick-connect connector suitable for household appliances. Background Art

[0002] There is no shortage of household cooking appliances that require the use of high-pressure steam. The most common one is the coffee machine, which requires the use of high-pressure steam to form milk foam. The pipes in the coffee machine are relatively simple, but they are very difficult to install due to the narrow space. The sealing joints in the current coffee machines are shown in the products at the following website "https: / / detail.1688.com / offer / 829250155416.html", which specifically include a body, a plug buckle and a sealing ring, as well as a metal pipe sleeve at the end of the pipe. During the assembly process, the metal pipe sleeve must first be riveted to the end of the pipe, and then the sealing ring must be sleeved on the end of the pipe, and then the end with the sealing ring must be inserted into the body, and finally fixed with the plug buckle; the process is very cumbersome, and during the installation process, the other end of the joint must be pre-installed on the coffee machine. The installation space in the coffee machine is very narrow, which increases the difficulty of assembly and reduces the installation efficiency;

[0003] In addition, coffee machines have a long history, and the commonly used structures have been finalized. However, for such a long time, the steam pipe connection in the coffee machine has basically remained in the most primitive installation method, and there has been no quick-connect connector. The main reason is that the quick-connect connector is composed of many parts, so the shell cannot be formed in one piece. Therefore, it is easy for the shell parts to detach under the pressure of high-pressure steam, leading to accidents, and there is also the risk of leakage under high pressure. Of course, the shell can be fixed with another layer using other structures, but it will make the production and assembly process complicated and the cost increase. It should be noted that the sales price of a quick-connect connector will not exceed 3 yuan. The increase in cost leads to an increase in product price, which is unacceptable to customers. Summary of the invention

[0004] The object of the present invention is to provide a high-pressure resistant quick-connect connector suitable for household appliances to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A high-pressure resistant quick-connect connector suitable for household appliances comprises a connector body, a sealing component and a claw member are fixedly arranged in the connection end of the connector body, the sealing component is used to fasten and seal a pipeline, and a blocking portion that contacts with an end of the pipeline is arranged at the outlet end of the sealing component, and the claw member is arranged near the other end of the sealing component;

[0007] A fastening assembly is provided at the connection end, the fastening assembly extends into the joint body and contacts the end surface of the sealing assembly, and the fastening assembly is threadedly connected to the connection end;

[0008] An unlocking piston is inserted through the fastening assembly, one end of the unlocking piston extends into the joint body and contacts with the fixed claw of the claw member, and the other end extends out of the fastening assembly.

[0009] According to a further technical solution, the inner wall of the fastening assembly is provided with a step 1, and the outer wall of the unlocking piston is provided with a step 2, and the step 1 and the step 2 can interfere with each other.

[0010] According to a further technical solution, the fastening assembly includes an external fixing member, an inner wall of the external fixing member is threadedly connected to the outer wall of the connecting end, an internal fixing member is arranged inside the external fixing member, an end face of one end of the internal fixing member abuts against the inner end face of the external fixing member and laterally abuts against the end face of the connecting end, and the other end of the internal fixing member extends into the joint body and abuts against the sealing assembly.

[0011] According to a further technical solution, the blocking portion is an independent silicone seal.

[0012] According to a further technical solution, at least one inwardly extending fastening annular flange is provided in the sealing assembly, which is used to fasten the annular flange to narrow the diameter of the pipeline.

[0013] According to a further technical solution, a conical surface is provided on one side of the fastening annular flange close to the claw member.

[0014] A further technical solution is that the sealing assembly includes seal 2, seal 3 and seal 4 which are in contact with each other in sequence, the fastening annular flange is arranged in seal 3, the aperture of the fastening annular flange is smaller than the outlet aperture of seal 4 and the outlet aperture of seal 2, the outlet aperture of seal 2 is smaller than or equal to the outlet aperture of seal 4, and the above apertures are all smaller than the pipe diameter.

[0015] According to a further technical solution, an annular boss is provided on the outer periphery of the sealing member 4, and a step 3 is provided on the inner wall of the connecting end, one side of the boss abuts against the step 3, and the other side abuts against the end of the fastener.

[0016] According to a further technical solution, one end of the sealing member three is snap-connected with one end of the sealing member four.

[0017] According to a further technical solution, a retaining spring is provided between the unlocking piston and the joint body.

[0018] Beneficial effects of the present invention:

[0019] During use, you only need to insert the pipe from the unlocking piston. The operation is very simple and can be easily operated even in a very narrow space. All the sealed parts are transferred to the joint. Compared with the traditional installation method, it reduces the operation steps of the pipe and greatly improves the work and maintenance efficiency.

[0020] In addition, a threaded connection is used between the connector body and the fastening assembly, and the materials used are also resistant to high pressure and high strength. Therefore, the mutual engagement of the screw threads can withstand greater pressure, completely eliminating the risk of falling off.

[0021] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 : A three-dimensional structural diagram of the present invention.

[0023] Figure 2 : Partial cross-sectional structural diagram of the present invention.

[0024] Figure 3 : A three-dimensional cross-sectional view of the present invention.

[0025] Figure 4 : Exploded view of the present invention.

[0026] Figure markings: 1-connector body, 11-connecting end, 12-step three, 21-blocking part, 22-seal two, 23-seal three, 24-seal four, 25-fastening annular flange, 26-annular boss, 3-claw, 31-fixing claw, 4-unlocking piston, 41-step two, 5-fastening assembly, 51-external fixing part, 52-internal fixing part, 53-step one, 6-circlip. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] Please refer to Figure 1-4 ;

[0029] The present invention provides a connector that can be quickly installed, and can take into account the effects of simple production, high pressure resistance and low cost; the quick connector described in the present invention is suitable for household electrical appliances, and of course for some equipment in catering stores, such as professional coffee machines, etc. In other words, the quick connector described in the present invention is intended to replace the traditional installation structure, so the equipment using the traditional structure for installation can be replaced by the quick connector; specifically, it includes a connector body 1, a connection end 11 of the connector body 1 is provided with a space for installing various components, a sealing assembly and a claw member 3 are fixedly arranged in the space, the sealing assembly is used to fasten and seal the pipeline, and the outlet end of the sealing assembly is provided with a blocking portion 21 that contacts the end of the pipeline, the above-mentioned components are all provided with a through hole for the pipeline to pass through, and the claw member 3 is arranged near the other end of the sealing assembly; a fastening assembly 5 is provided at the connection end 11, the fastening assembly 5 extends into the connector body 1 and contacts the end face of the sealing assembly, and the fastening assembly 5 is threadedly connected to the connection end 11; an unlocking piston 4 is passed through the fastening assembly 5, and one end of the unlocking piston 4 extends into the connector body 1;

[0030] During assembly, the sealing component, the claw part 3 and the unlocking piston 4 are installed therein in sequence, and finally the fastening component 5 is connected to the connecting end 11 by means of a tube thread connection, and is in contact with the end face of the sealing component. The sealing component is in contact with the blocking part 21 so that there is no gap between the components, and the overall structure is very tight. In addition, after the fastening component 5 is fixed to the connecting end 11 by means of a threaded connection, it cannot be loosened by hand alone, and the workpiece needs to be used. Therefore, there is no need to worry about the risk of loosening, and potential safety hazards are completely eliminated.

[0031] In addition, the blocking portion 21 in this embodiment can be an integrally formed structure with the sealing component, or can be a separate component. Preferably, the blocking portion 21 is an independent silicone seal 1, the outer periphery of which respectively contacts the inner wall of the connecting end 11 and one end of the sealing component, and the aperture of the silicone seal 1 is smaller than the aperture of the contacting end of the sealing component; and the outer side of the sealing component also contacts the side of the connecting end 11, the unlocking piston 4 is movable in the connector body 1, and its end contacts the fixed claw 31 of the claw member 3, and the other end extends out of the connector body 1, the unlocking piston 4 cannot be separated from the connector body 1, and the fixed claw 31 is elastic, so each time the unlocking piston 4 is pressed, the fixed claw 31 will be elastically deformed, and after the pressure is removed, the fixed claw 31 will reset and the unlocking piston 4 will pop out;

[0032] When in use, the pipeline is inserted from the unlocking piston 4, passes through the claw part 3 and the sealing component in turn, and finally the outer periphery of the end of the pipeline is completely in conflict with the end face of the silicone seal 1, and the outlet of the pipeline corresponds to the through hole of the silicone seal 1; in the process of the pipeline extending, the fixing claw 31 will be deformed and tilted, and conflict with the outer wall of the pipeline. At this time, it is the first level of fixation, which makes the pipeline can only move forward but not backward; then as the pipeline enters the sealing component, the aperture of the sealing component is slightly smaller than the outer diameter of the pipeline, and the sealing component wraps the outer wall of the pipeline. Assuming that the sealing component is silicone, the friction between the outer wall of the pipeline and the inner wall of the sealing component is used to make it difficult for the pipeline to be pulled out in the opposite direction. This is the second level of fixation, and at the same time, it can play a sealing effect to prevent liquid from seeping out from between the outer wall of the pipeline and the inner wall of the sealing component. In addition, since the end face of the silicone seal 1 also conflicts with the end of the sealing component, it can also prevent liquid from seeping out from between the outer wall of the sealing component and the inner wall of the connecting end 11. The above design can ensure that there is no risk of leakage under high pressure.

[0033] Also, during use, you only need to insert the pipe from the unlocking piston 4. The operation is very simple and can be easily operated even in a very small space. All sealing parts can be transferred to the joint. Compared with the traditional installation method, it reduces the operation steps of the pipe and greatly improves the work efficiency.

[0034] When the pipe needs to be removed from the joint, it is only necessary to press the unlocking piston 4 to open the fixing claws 31 and separate them from the outer wall of the pipe, and then gently pull out the pipe.

[0035] In addition, after the product is produced, it needs to be recognized by the customer to be successful. The previously applied document "202422217026.3, a coffee machine pipeline conveying joint sealing structure", the joint body 1 and the fastening component 5 are traditionally connected by snap-fit. Although the snap-fit ​​method can achieve a good fastening effect, there may be a risk of deformation, unhooking and exploding under high-pressure steam. Therefore, the threaded connection method in this application, the selected manufacturing material is also resistant to high pressure and high strength, so it can withstand greater pressure under the mutual engagement of the screw teeth, completely solving the risk of falling off.

[0036] Further explanation, the sealing structure described in the present invention can be applied to other connectors of different shapes of coffee machines, or other devices. In addition, the sealing structure is not limited to being provided in one of the connecting ends 11, but can be provided in multiple connecting ends 11 of the connector according to actual needs.

[0037] In one embodiment of the present invention, the inner wall of the fastening assembly 5 is provided with a step 1 53, and the outer wall of the unlocking piston 4 is provided with a step 2 41. Step 1 53 and step 2 41 can interfere with each other to prevent the unlocking piston 4 from being pulled out therefrom. Preferably, step 1 53 and step 2 41 are both annular steps.

[0038] The fastening assembly 5 of the present invention can be an integral injection-molded structure, but after testing, it was found that the strength is slightly poor, so a split structure is adopted, specifically including an external fixing part 51, the inner wall of the external fixing part 51 is threadedly connected to the outer wall of the connecting end 11, and an internal fixing part 52 is arranged inside the external fixing part 51, and the end face of one end of the internal fixing part 52 is in conflict with the inner end face of the external fixing part 51, and is laterally in conflict with the end face of the connecting end 11, and the other end of the internal fixing part 52 extends into the joint body 1 and is in conflict with the sealing assembly; the strength of a single fixing part is higher, and the mutually conflicting structure is more compact.

[0039] In addition, the traditional way of sealing the assembly is to provide an annular step on its outer circumference, and to provide a card groove on the inner wall of the connecting end 11 to be clamped and fixed thereto. This method is mostly used to fix the sealing ring, but this method is not only difficult to fix, but also easy to cause it to shift and fall off when the pipe is pulled out; therefore, the fastener described in this embodiment can achieve the fixation of the unlocking piston 4 and the sealing assembly, killing two birds with one stone.

[0040] More specifically, first, the silicone seal 1 and the sealing assembly are sequentially placed into the connection end 11, so that one end of the sealing assembly contacts the end surface of the silicone seal 1, and then one end of the fastening assembly 5 is inserted into the connection end 11 to contact the other end of the sealing assembly, and then the fastening assembly 5 is threadedly connected to the connection end 11;

[0041] In addition, a channel for the unlocking piston 4 to penetrate is provided in the fastening component 5, a step 1 53 is provided on the inner wall of the channel, and a step 2 41 is provided on the outer periphery of the unlocking piston 4. The unlocking piston 4 is restricted from being withdrawn from the fastening component 5 by the step 1 53 and the step 2 41. In the initial state, one end of the unlocking piston 4 contacts with the fixing claw 31, and then the step 1 53 and the step 2 41 contact to achieve fixation.

[0042] In the embodiment of the sealing assembly of the present invention, a channel for the pipeline to pass through is provided in the sealing assembly, and at least one fastening annular flange 25 extending inward is provided in the channel, so that the sealing assembly forms a "wide-narrow-wide" structure. When the pipeline passes through the fastening annular flange 25, it will narrow and then widen, which can not only achieve the effect of fastening, but also achieve the effect of increasing the flow rate;

[0043] Furthermore, a conical surface is provided on one side of the fastening annular flange 25 close to the claw member 3 , so that the pipeline can be narrowed and pass through the fastening annular flange 25 more easily.

[0044] Further expanded description of the sealing assembly, specifically including the seal 22, seal 3 23 and seal 4 24 that are in contact with each other in sequence, the fastening annular flange 25 is arranged in the seal 3 23, the aperture of the fastening annular flange 25 is smaller than the outlet aperture of the seal 4 24 and the outlet aperture of the seal 2 22, the outlet aperture of the seal 2 22 is smaller than or equal to the outlet aperture of the seal 4 24, and the above apertures are all smaller than the pipe diameter. It should be noted that the seals 22 and 24 should also be provided with conical surfaces to better introduce the pipe, and the sealing assembly is provided with several fastening annular flanges 25 and several conical surfaces. From the production perspective, it is difficult to form an integral part, so it is more conducive to production to adopt split-type separate forming; preferably, the fastening annular flange 25 in the seal 3 23 is provided with two, in addition to further fixing the pipe, it can also further improve the sealing, and multiple sealings prevent leakage.

[0045] In addition, among the seal 2 22 , the seal 3 23 and the seal 4 24 , at least the seal 3 23 is silicone. Under the extrusion of the fastener, the seal 2 22 and the seal 4 24 are respectively tightly attached to the two sides of the seal 3 23 to form a seal.

[0046] In this embodiment, an annular boss 26 is provided on the outer periphery of the sealing member 4 24, and a step 3 12 is provided on the inner wall of the connecting end 11. One side of the boss abuts against the step 3 12, and the other side abuts against the end of the fastening assembly 5. One end of the sealing member 3 23 is clamped with one end of the sealing member 4 24.

[0047] In the embodiment of the present invention, a retaining spring 6 is provided between the unlocking piston 4 and the joint body 1 to prevent accidental unlocking.

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-pressure resistant quick-connect connector suitable for household appliances, characterized in that: The invention comprises a joint body (1), wherein a sealing assembly and a claw member (3) are fixedly arranged in a connection end (11) of the joint body (1), wherein the sealing assembly is used to fasten and seal a pipeline, and an outlet end of the sealing assembly is provided with a blocking portion (21) that contacts the end of the pipeline, and the claw member (3) is arranged close to the other end of the sealing assembly; A fastening assembly (5) is provided at the connection end (11), the fastening assembly (5) extends into the joint body (1) and contacts the end surface of the sealing assembly, and the fastening assembly (5) is threadedly connected to the connection end (11); An unlocking piston (4) is inserted into the fastening assembly (5), one end of the unlocking piston (4) extends into the joint body (1) and contacts the fixing claw (31) of the claw member (3), and the other end extends out of the fastening assembly (5).

2. A high-pressure resistant quick-connect connector suitable for household appliances according to claim 1, characterized in that: The inner wall of the fastening assembly (5) is provided with a step 1 (53), and the outer wall of the unlocking piston (4) is provided with a step 2 (41), and the step 1 (53) and the step 2 (41) can abut against each other.

3. The high-pressure resistant quick-connect connector suitable for household appliances according to claim 1, characterized in that: The fastening assembly (5) comprises an external fixing member (51), the inner wall of the external fixing member (51) being threadedly connected to the outer wall of the connecting end (11), an internal fixing member (52) being arranged inside the external fixing member (51), the end surface of one end of the internal fixing member (52) being in contact with the inner end surface of the external fixing member (51) and being in contact with the end surface of the connecting end (11) in a transverse direction, and the other end of the internal fixing member (52) extending into the joint body (1) to be in contact with the sealing assembly.

4. A high-pressure resistant quick-connect connector suitable for household appliances according to any one of claims 1 to 3, characterized in that: The blocking portion (21) is an independent silicone seal.

5. A high-pressure resistant quick-connect connector suitable for household appliances according to claim 4, characterized in that: At least one inwardly extending fastening annular flange (25) is arranged in the sealing component, and is used for fastening the annular flange (25) to narrow the diameter of the pipeline.

6. A high-pressure resistant quick-connect connector suitable for household appliances according to claim 5, characterized in that: The fastening annular flange (25) is provided with a conical surface on one side close to the claw member (3).

7. A high-pressure resistant quick-connect connector suitable for household appliances according to claim 4, characterized in that: The sealing assembly comprises a seal 2 (22), a seal 3 (23) and a seal 4 (24) which are in contact with each other in sequence, the fastening annular flange (25) is arranged in the seal 3 (23), the aperture of the fastening annular flange (25) is smaller than the outlet aperture of the seal 4 (24) and the outlet aperture of the seal 2 (22), the outlet aperture of the seal 2 (22) is smaller than or equal to the outlet aperture of the seal 4 (24), and the above apertures are all smaller than the pipe diameter.

8. A high-pressure resistant quick-connect connector suitable for household appliances according to claim 7, characterized in that: The outer periphery of the sealing member 4 (24) is provided with an annular boss (26), the inner wall of the connecting end (11) is provided with a step 3 (12), one side of the boss abuts against the step 3 (12), and the other side abuts against the end of the fastener.

9. A high-pressure resistant quick-connect connector suitable for household appliances according to claim 8, characterized in that: One end of the sealing member three (23) is snap-fitted with one end of the sealing member four (24).

10. A high-pressure resistant quick-connect connector suitable for household appliances according to claim 1, characterized in that: A retaining spring (6) is provided between the unlocking piston (4) and the joint body (1).

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