Spinning buckle type matching connection structure and drainage pump using same

Abstract

The utility model discloses a rotary buckle type matching connection structure and a draining pump using the same. The rotary buckle type matching connection structure comprises a plurality of pairs of rotary buckle sets and at least one pair of anti-disengagement parts, wherein the rotary buckle sets and the anti-disengagement parts are arranged on a first connection part and a second connection part and are suitable for being clamped and matched. Each pair of rotary buckle groups is suitable for realizing clamping through rotary motion between the first joint part and the second joint part in the first direction; each pair of anti-falling parts comprises a first anti-spinning buckle arranged on the first joint part and a second anti-spinning buckle arranged on the second joint part; a first locking part is arranged on the first rotation stopping buckle, and a second locking part is arranged on the second rotation stopping buckle; the first rotation stopping buckle is suitable for being subjected to the jacking force of the second rotation stopping buckle and at least partially deforms relative to the first joint part, so that the first locking part and the second locking part are connected to lock the clamping state of the first joint part and the second joint part; and the first rotation stopping buckle is also suitable for being deformed at least partially relative to the first joint part under the action of external force, so that the first locking part is separated from the second locking part to release the anti-falling limitation of the first joint part and the second joint part.

Description

TECHNICAL FIELD

[0001] The utility model relates to drainage pump technical field especially, it relates to a screw type adapter structure and use its drainage pump. BACKGROUND

[0002] Drainage pump is by electromagnetic drive center iron core impeller rotation to realize the discharge of water. The shell of drainage pump includes pump body and pump cover, for pump body and pump cover can select to adopt standard piece screw to connect, but this kind of mode assembly efficiency is low. For this reason, the prior art often adopts screw type adapter structure to realize the assembly between pump cover and pump shell.

[0003] For this, like the announcement number CN207377870U discloses a kind of connecting structure of drainage pump body and pump cover, it is equipped with several installation socket and 1 lock buckle on the connecting disc of pump body, the outer diameter edge of pump cover is equipped with the protrusion corresponding with installation socket and lock buckle, protrusion is connected with the installation socket and lock buckle on connecting disc. The main function of lock buckle therein is to prevent pump body and pump cover from being assembled in place and then being reversed displacement or being taken out, to ensure the stability and reliability of drainage pump, but practical research and use find, the above-mentioned screw structure still exists following problem in use process:

[0004] Due to the special position of stop screw, when pump body and pump cover need to be disassembled, operator must use tool to resist stop screw to release the locking of protrusion, after the protrusion is released from the obstruction of locking block, pump body and pump cover can be disassembled by rotating. This process is complicated and the operation is complex.

[0005] Based on the above situation, based on the problems existing in the disassembly process of the currently used screw type adapter structure, to improve the convenience of disassembly, the screw type adapter structure needs to be further optimized. INVENTION CONTENTS

[0006] The first object of the utility model is to provide a screw type adapter structure to solve the technical problem of improving the convenience of disassembly.

[0007] The second object of the utility model is to provide a drainage pump to solve the technical problem of optimizing the connecting structure between pump body and pump cover.

[0008] The screw type adapter structure of the utility model is realized as follows:

[0009] A screw type adapter structure, comprising: a plurality of pairs of screw groups and at least one pair of anti-removal parts suitable for clamping cooperation on the first and second joint parts.

[0010] Each pair of the rotation buckle sets is adapted to realize the clamping by the rotation movement in the first direction between the first joint part and the second joint part; each pair of the anti-rotation parts comprises a first rotation stopper arranged on the first joint part and a second rotation stopper arranged on the second joint part; and

[0011] The first rotation stopper is provided with a first locking part, and the second rotation stopper is provided with a second locking part; the first locking part and the second locking part are adapted to at least partially abut to prevent the rotation movement in the second direction between the first joint part and the second joint part;

[0012] The first rotation stopper is adapted to be deformed at least partially relative to the first joint part by the thrust force of the second rotation stopper, so that the first locking part and the second locking part abut to lock the clamping state of the first joint part and the second joint part; and the first rotation stopper is also adapted to be deformed at least partially relative to the first joint part by the external force, so that the first locking part and the second locking part are separated to release the anti-rotation limitation of the first joint part and the second joint part.

[0013] In the optional implementation of the utility model, the part of the first rotation stopper provided with the first locking part and the side end face extending along the rotation direction of the first joint part and the second joint part are both overhanging surfaces separated from the first joint part.

[0014] In the optional implementation of the utility model, the first rotation stopper is a folding arm; and the first rotation stopper comprises a supporting arm connected with the first joint part and a connecting arm connected with the supporting arm;

[0015] The end of the connecting arm away from the supporting arm is provided with the first locking part.

[0016] In the optional implementation of the utility model, the supporting arm and the connecting arm are in an obtuse angle cooperation at the end face away from the second rotation stopper, and when the rotation buckle set between the first joint part and the second joint part is clamped in place, the connecting arm is bent relative to the supporting arm away from the second rotation stopper; and

[0017] When the first rotation stopper and the second rotation stopper are separated, the first rotation stopper is deformed away from the second rotation stopper.

[0018] In the optional implementation of the utility model, the end face of the first rotation stopper towards the second rotation stopper is an inclined cooperation face extending in an inclined manner relative to the second locking part;

[0019] During the rotation cooperation between the first joint part and the second joint part, the second locking part is adapted to abut to the part of the inclined cooperation face to deform the first rotation stopper.

[0020] In the optional implementation of the utility model, at least one side end face of the supporting arm is provided with a reinforcing rib between the first joint part.

[0021] In the optional implementation of the utility model, the second rotation-stopping buckle is a straight arm or a folded arm.

[0022] In the optional implementation of the utility model, when the rotation-buckle group clamped between the first joint and the second joint is in place, a first gap d is formed between the first locking part and the second locking part along the screwing direction of the first joint and the second joint;

[0023] and 0.5mm≤d≤1mm.

[0024] In the optional implementation of the utility model, when the rotation-buckle group clamped between the first joint and the second joint is in place, a second gap f is formed between the second locking part and the first rotation-stopping buckle along the direction perpendicular to the screwing direction of the first joint and the second joint;

[0025] and 0.1mm≤f≤0.5mm.

[0026] In the optional implementation of the utility model, the first joint is further provided with a baffle for limiting the maximum deformation of the first rotation-stopping buckle when the first rotation-stopping buckle and the second rotation-stopping buckle are disengaged; and

[0027] When the rotation-buckle group clamped between the first joint and the second joint is in place, the baffle is located on the side of the first rotation-stopping buckle away from the second rotation-stopping buckle; and the baffle is adapted to abut against the end of the first rotation-stopping buckle away from the first joint.

[0028] The drainage pump is realized as follows:

[0029] A drainage pump at least comprises a motor assembly and a pump assembly used in cooperation; wherein

[0030] The motor assembly at least comprises a motor housing, and the pump assembly at least comprises a pump housing;

[0031] The motor housing and the pump housing are connected through the rotation-buckle type matching structure;

[0032] The first joint is arranged on the motor housing, and the second joint is arranged on the pump housing; or

[0033] The second joint is arranged on the motor housing, and the first joint is arranged on the pump housing.

[0034] In the optional implementation of the utility model, the first rotation-stopping buckle and the second rotation-stopping buckle are arranged in a high-low staggered manner along the axial direction of the motor assembly.

[0035] By adopting the above technical solution, this utility model has the following beneficial effects: The snap-lock coupling structure and the drainage pump using it, through the cooperation of the first anti-spinning buckle and the second anti-spinning buckle set in the snap-lock coupling structure, can prevent the first joint and the second joint from unexpectedly loosening when screwed in. When it is necessary to separate the first joint and the second joint, it is not necessary to use a tool to hold either anti-spinning buckle. It is only necessary to move the first anti-spinning buckle by hand to deform it within a certain range, which can release the anti-loosening restriction of the first joint and the second joint by the first and the second anti-spinning buckles. Therefore, the disassembly process is convenient and efficient. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the first anti-rotation buckle and the first joint portion of the snap-fit ​​structure of this utility model.

[0037] Figure 2 This is a schematic diagram of the first anti-rotation buckle of the snap-fit ​​structure of the present invention.

[0038] Figure 3 This is a schematic diagram of the second anti-rotation buckle and the second joint portion of the snap-fit ​​structure of this utility model.

[0039] Figure 4 This is a schematic diagram of the second anti-rotation buckle of the snap-fit ​​structure of this utility model.

[0040] Figure 5 This is a schematic diagram of the motor housing and pump housing in their initial assembly state when the snap-fit ​​connection structure of this utility model is applied in a drainage pump.

[0041] Figure 6 for Figure 5 Enlarged schematic diagram of part A;

[0042] Figure 7 This is a schematic diagram of the motor housing and pump housing in the assembled state when the snap-fit ​​structure of this utility model is applied in a drainage pump.

[0043] Figure 8 for Figure 7 Enlarged schematic diagram of part B;

[0044] Figure 9 This is a schematic diagram of the motor housing and pump housing in a disassembled state when the snap-fit ​​connection structure of this utility model is applied in a drainage pump.

[0045] Figure 10 for Figure 9 Enlarged schematic diagram of part C;

[0046] Figure 11The utility model discloses a structure diagram of the screw buckle type adapter structure applied in the drainage pump.

[0047] Figure 12 For Figure 11 The A towards sectional view of the utility model discloses a structure diagram of the screw buckle type adapter structure applied in the drainage pump.

[0048] Figure 13 The utility model discloses a structure diagram of the reinforcing rib of the first anti-rotation buckle of the screw buckle type adapter structure.

[0049] Figure 14 The utility model discloses a structure diagram of the first anti-rotation buckle and the baffle of the screw buckle type adapter structure under the non-contact state.

[0050] Figure 15 The utility model discloses a structure diagram of the first anti-rotation buckle and the baffle of the screw buckle type adapter structure under the contact state.

[0051] Figure 16 The utility model discloses a structure diagram of the drainage pump.

[0052] In the drawing: first joint 1, buckle 11, second joint 2, clamping block 21, first anti-rotation buckle 3, first locking part 31, inclined matching surface 32, support arm 33, link arm 34, second anti-rotation buckle 4, second locking part 41, baffle 5, reinforcing rib 6, pump shell 7, motor shell 81, stator 82, rotor 83, U-shaped iron core 84, connecting arm 841. DETAILED DESCRIPTION

[0053] In order to make the content of the utility model more easily be clearly understood, the following according to specific embodiment and combining with the drawing, the utility model is further explained in detail.

[0054] Embodiment 1:

[0055] Please refer to Figures 1 to 15 The utility model discloses a structure diagram of the screw buckle type adapter structure applied in the drainage pump.

[0056] For the screw buckle group of the embodiment, the specific shape and structure can select any mature means in prior art, for example, including the buckle 11 arranged on the first joint 1 and the clamping block 21 arranged on the second joint 2 and adapted to be clamped into the buckle 11, with the relative rotation between the first joint 1 and the second joint 2, so that the clamping block 21 is clamped into the buckle 11 one by one.

[0057] Furthermore, theoretically, more than one pair of the anti-disengagement portions can be provided. However, in view of the structure simplification and the use requirements, only one pair of the anti-disengagement portions provided between the first joint portion 1 and the second joint portion 2 can meet the use requirements of the present embodiment. Therefore, the present embodiment only exemplifies the case that one pair of the anti-disengagement portions is provided between the first joint portion 1 and the second joint portion 2 with reference to the drawings.

[0058] In this regard, the anti-disengagement portions adopted by the present embodiment each include a first anti-rotation buckle 3 provided on the first joint portion 1 and a second anti-rotation buckle 4 provided on the second joint portion 2. In this structure, in the state that the first joint portion 1 and the second joint portion 2 are clamped in place along the first direction (for example, clockwise), the first anti-rotation buckle 3 and the second anti-rotation buckle 4 can form mutual restraint between the first anti-rotation buckle 3 and the second anti-rotation buckle 4 through partial abutment to prevent the first joint portion 1 and the second joint portion 2 from rotating along the second direction (for example, counterclockwise).

[0059] Based on the above, specifically, the first anti-rotation buckle 3 is provided with a first locking portion 31 for abutting with the second anti-rotation buckle 4, and the second anti-rotation buckle 4 is provided with a second locking portion 41 for abutting with the first locking portion 31. That is, the anti-disengagement effect of the first joint portion 1 and the second joint portion 2 is achieved through the at least partially abutting state of the first locking portion 31 and the second locking portion 41. In order to achieve the effect that the first joint portion 1 and the second joint portion 2 cannot be disengaged through the abutting of the first locking portion 31 and the second locking portion 41, the abutting surfaces of the first locking portion 31 and the second locking portion 41 are opposite in direction, that is, the mutual restraint between the first joint portion 1 and the second joint portion 2 is formed through the abutting surfaces in opposite directions, so that the relative movement of the two cannot occur.

[0060] On the basis of the above structure, it should be noted that the first anti-rotation buckle 3 is adapted to be deformed at least partially relative to the first joint portion 1 by the thrust force of the second anti-rotation buckle 4, so that the first locking portion 31 abuts with the second locking portion 41 to lock the clamped state of the first joint portion 1 and the second joint portion 2, and the first anti-rotation buckle 3 restores its shape after the first joint portion 1 and the second joint portion 2 are clamped in place. That is, through the deformation of the first anti-rotation buckle 3 within a short time range, the second locking portion 41 can abut with the first locking portion 31 smoothly, and the abutting state of the first locking portion 31 and the second locking portion 41 is locked by the first anti-rotation buckle 3 to restore its original shape.

[0061] Further, the first anti-rotation buckle 3 is also adapted to be deformed at least partially relative to the first joint part 1 by external force, so that the first locking part 31 is separated from the second locking part 41 to release the anti-disassembly limitation of the first joint part 1 and the second joint part 2. That is, whether the reliable connection between the first joint part 1 and the second joint part 2 is formed by screwing or the first joint part 1 and the second joint part 2 need to be disassembled, the deformation of the first anti-rotation buckle 3 is needed to achieve. For the disassembly process of the first joint part 1 and the second joint part 2, the external force needed to deform the first anti-rotation buckle 3 can be achieved by artificial hand, without the need of additional auxiliary tools, because the first anti-rotation buckle 3 itself is designed to be deformed by the artificial hand.

[0062] To meet the above use requirements, generally, the first anti-rotation buckle 3 is provided with the first locking part 31, and the side end surface extending along the screwing direction of the first joint part 1 and the second joint part 2 is separated from the first joint part 1 to adapt to the disconnection of the second anti-rotation buckle 4 by the deformation of the first anti-rotation buckle 3 to release the anti-disassembly limitation of the first joint part 1 and the second joint part 2. That is, only one side end of the entire first anti-rotation buckle 3 is connected with the first joint part 1. For the first joint part 1 and the second joint part 2 which have formed a reliable connection, if they need to be disassembled, the first anti-rotation buckle 3 needs to be deformed within a moderate range.

[0063] In addition, to reduce the difficulty of the deformation process of the first anti-rotation buckle 3, in an optional implementation, the first anti-rotation buckle 3 is a folded arm. The folded arm is at least bent once along the length direction. In the embodiment, the first anti-rotation buckle 3 includes a supporting arm 33 connected with the first joint part 1 and a connecting arm 34 connected with the supporting arm 33, and the first locking part 31 is arranged at the end of the connecting arm 34 away from the supporting arm 33. That is, the first anti-rotation buckle 3 of the embodiment is provided with one bend. Based on this, it needs to be explained that the supporting arm 33 and the connecting arm 34 are in an obtuse angle at the end surface away from the second anti-rotation buckle 4, and when the screwing assembly of the first joint part 1 and the second joint part 2 is connected in place, the connecting arm 34 is bent away from the second anti-rotation buckle 4 relative to the supporting arm 33; and when the first anti-rotation buckle 3 is disconnected from the second anti-rotation buckle 4, the first anti-rotation buckle 3 is deformed away from the second anti-rotation buckle 4. That is, in the deformation process of the first anti-rotation buckle 3 relative to the second anti-rotation buckle 4, the connecting arm 34 provided with the first locking part 31 mainly plays a deformation role, and the design of the bending of the connecting arm 34 relative to the supporting arm 33 can reduce the difficulty of the deformation of the connecting arm 34.

[0064] On the basis of the above structure, in order to strengthen the structural strength of the first rotation-stopping buckle 3, prevent the first rotation-stopping buckle 3 from being broken due to deformation, a reinforcing rib 6 is arranged between at least one side end surface of the supporting arm 33 and the first joint part 1. Optionally, reinforcing ribs 6 are arranged between both side end surfaces of the supporting arm 33 perpendicular to the screwing direction of the first joint part 1 and the second joint part 2 and the first joint part 1. Regarding the specific parameters of the reinforcing rib 6 here, in an optional implementation, the angle a between the end surface of the first rotation-stopping buckle 3 and the end surface of the reinforcing rib 6 is 0-10°, and the thickness b of the reinforcing rib 6 is 1-2 mm, thereby increasing the strength and rigidity of the part and preventing the first rotation-stopping buckle 3 from being deformed or broken during the force process.

[0065] Based on the above situation, in order to improve the use strength of the first rotation-stopping buckle 3 and prevent it from being broken due to deformation, the first joint part 1 of the embodiment further comprises a stop piece 5 for limiting the maximum deformation of the first rotation-stopping buckle 3 when the first rotation-stopping buckle 3 is separated from the second rotation-stopping buckle 4; when the screwing group between the first joint part 1 and the second joint part 2 is clamped in place, the stop piece 5 is located on the side of the first rotation-stopping buckle 3 away from the second rotation-stopping buckle 4; and the stop piece 5 is adapted to abut against the end of the first rotation-stopping buckle 3 away from the first joint part 1. Here, the distance between the stop piece 5 and the first rotation-stopping buckle 3 is c, 3mm≤c≤5mm before the first rotation-stopping buckle 3 is deformed. Based on this design, when the first rotation-stopping buckle 3 is deformed, the amount of deformation of the first rotation-stopping buckle 3 is limited, and the stop piece 5 prevents the first rotation-stopping buckle 3 from deforming beyond the limited amount. The design of the stop piece 5 can effectively prevent the first rotation-stopping buckle 3 from being accidentally damaged or broken due to excessive force of the operator.

[0066] In addition, it should be noted that, regarding the first rotation-stopping buckle 3 being adapted to be deformed at least partially relative to the first joint part 1 by the pushing force of the second rotation-stopping buckle 4, so that the first locking part 31 and the second locking part 41 are in contact to lock the clamping state of the first joint part 1 and the second joint part 2. For this process, in theory, when the first joint part 1 and the second joint part 2 are relatively rotated, before the screwing group is clamped in place, that is, the contact surfaces of the first locking part 31 and the second locking part 41 are not in contact, regardless of whether the side end surface of the first rotation-stopping buckle 3 relative to the second rotation-stopping buckle 4 is an inclined surface or a parallel surface, as long as the second rotation-stopping buckle 4 can generate a pushing force on the first rotation-stopping buckle 3 to deform the first rotation-stopping buckle 3, it can meet the use requirements of the embodiment. However, in combination with the actual situation, in order to reduce the deformation of the first rotation-stopping buckle 3 caused by the pushing force of the second rotation-stopping buckle 4, which may cause unexpected damage to the first rotation-stopping buckle 3, the embodiment is designed as follows:

[0067] The end surface of the first anti-rotation buckle 3 facing the second anti-rotation buckle 4 is a beveled matching surface 32 extending in an inclined manner relative to the second locking portion 41; during the screwing matching between the first joint portion 1 and the second joint portion 2, the second locking portion 41 is adapted to abut against the beveled matching surface 32 of the part to deform the first anti-rotation buckle 3. In the process of realizing the joint of the first joint portion 1 and the second joint portion 2 by relative rotation, the second locking portion 41 on the second anti-rotation buckle 4 and the inclined matching surface on the first anti-rotation buckle 3 are not always in pushing matching, but when the first locking portion 31 and the second locking portion 41 are about to contact, the second locking portion 41 will generate a pushing force on the first anti-rotation buckle 3 to deform the first anti-rotation buckle 3. Therefore, under this design, the contact area of the second locking portion 41 and the beveled matching surface 32 of the first anti-rotation buckle 3 can be reduced, and the deformation amount of the first anti-rotation buckle 3 can be reduced, which can protect the first anti-rotation buckle 3 as much as possible on the basis of meeting the use requirements.

[0068] Similarly, in order to meet the anti-disengagement requirements of the first anti-rotation buckle 3 and the second anti-rotation buckle 4 for the first joint portion 1 and the second joint portion 2, and the disassembly requirements of the first anti-rotation buckle 3 and the second anti-rotation buckle 4, the embodiment is further designed as follows:

[0069] Firstly, when the screwing group of the first joint portion 1 and the second joint portion 2 is connected in place, a first gap d is formed between the first locking portion 31 and the second locking portion 41 along the screwing direction of the first joint portion 1 and the second joint portion 2; and 0.5mm≤d≤1mm.

[0070] Secondly, when the screwing group of the first joint portion 1 and the second joint portion 2 is connected in place, a second gap f is formed between the second locking portion 41 and the first anti-rotation buckle 3 perpendicular to the screwing direction of the first joint portion 1 and the second joint portion 2; and 0.1mm≤f≤0.5mm.

[0071] Based on the design of the first gap d and the second gap f, on the one hand, by avoiding the interference caused by the zero-gap matching of the first locking portion 31 and the second locking portion 41, the difficulty of the deformation of the first anti-rotation buckle 3 caused by external force during the disassembly process of the first joint portion 1 and the second joint portion 2 is reduced; on the other hand, the problem that reliable matching cannot be formed due to the size error of the first locking portion 31 and the second locking portion 41 during the assembly process of the first joint portion 1 and the second joint portion 2 is also avoided. Therefore, by adopting the gap matching mode, the first locking portion 31 and the second locking portion 41 greatly improve the convenience of operation, so that the disassembly process of the first joint portion 1 and the second joint portion 2 is more efficient.

[0072] In addition, it should be noted that, since the second anti-rotation buckle 4 does not need to be deformed during the whole process of screwing or unscrewing the first joint part 1 and the second joint part 2, the second anti-rotation buckle 4 can be a straight arm or a folded arm, which is not absolutely limited in the embodiment.

[0073] In summary, for the screw buckle type matching structure of the embodiment, through the cooperation of the first anti-rotation buckle 3 and the second anti-rotation buckle 4 arranged in the screw buckle type matching structure, the first joint part 1 and the second joint part 2 can not only prevent the unintended disengagement of the first joint part 1 and the second joint part 2 in the screwed state, but also can be easily disassembled by only deforming the first anti-rotation buckle 3 within a certain range by hand without the need for tools to press against any anti-rotation buckle.

[0074] Embodiment 2:

[0075] Please refer to Figures 1 to 16 On the basis of the screw buckle type matching structure of embodiment 1, the embodiment provides a drainage pump, which at least includes: a motor assembly and a pump assembly used in cooperation; wherein the motor assembly at least includes a motor shell 81 and a rotor 83 and a stator 82 arranged in the motor shell 81, and the pump assembly at least includes a pump shell 7; the motor shell 81 and the pump shell 7 are connected through the screw buckle type matching structure of embodiment 1.

[0076] More specifically, the first joint part 1 is arranged on the motor shell 81, and the second joint part 2 is arranged on the pump shell 7; or the second joint part 2 is arranged on the motor shell 81, and the first joint part 1 is arranged on the pump shell 7. In theory, the above two cases both meet the use requirements of the embodiment, which is not absolutely limited in the embodiment, and the drawings of the embodiment only take the case that the first joint part 1 is arranged on the motor shell 81 and the second joint part 2 is arranged on the pump shell 7 as an example.

[0077] On the basis of the above structure, it should be noted that the first anti-rotation buckle 3 and the second anti-rotation buckle 4 are arranged in high-low staggered manner along the axial direction of the motor assembly. The significance of this design is that, when the motor shell 81 and the pump shell 7 are assembled by rotating, there will be a partial intersection between the first anti-rotation buckle 3 and the second anti-rotation buckle 4 along the circumferential direction of the motor assembly, at this time, only through the high-low staggered design along the axial direction of the motor assembly to form the mutual displacement of the two, can the two not produce hard interference and affect the further relative rotation between the motor shell 81 and the pump shell 7.

[0078] Finally, it should be noted that for the specific position distribution of the first anti-rotation buckle 3 on the motor housing 81, the first anti-rotation buckle 3 is arranged on the end face of the motor housing 81 corresponding to one end of the connecting arm 841 of the U-shaped core 84 away from the stator 82 part of the motor. This position is not hindered by the stator 82, and it is convenient for the hand to exert a force on the first anti-rotation buckle 3 to disassemble. The operator presses the first anti-rotation buckle 3 with his hand, so that the first anti-rotation buckle 3 and the second anti-rotation buckle 4 are separated, and then the reverse rotation can separate the pump assembly and the motor assembly.

[0079] The above specific embodiments further illustrate the purpose, technical scheme and beneficial effects of the utility model, and it should be understood that the above is only a specific embodiment of the utility model and is not used to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

[0080] In the description of the utility model, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, structure and operation. Therefore, it cannot be understood as a limitation on the utility model.

[0081] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0082] In the description of the utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the utility model product when it is usually placed. It is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the devices or elements referred to must have a specific orientation, structure and operation, so it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0083] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0084] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. A screw-on mating structure, characterized in that, The utility model relates to a kind of jointing structure, comprising: A plurality of pairs of rotating buckle groups and at least one pair of anti-escape parts suitable for clamping fit are arranged on the first jointing part and the second jointing part; Wherein Each pair of rotating buckle groups is suitable for achieving clamping by rotating movement between the first jointing part and the second jointing part in the first direction;Each pair of anti-escape parts includes a first anti-rotation buckle arranged on the first jointing part and a second anti-rotation buckle arranged on the second jointing part;And The first anti-rotation buckle is provided with a first locking part, and the second anti-rotation buckle is provided with a second locking part;The first locking part and the second locking part are suitable for at least partially interfacing to prevent the first jointing part and the second jointing part from rotating in the second direction; The first anti-rotation buckle is suitable for being deformed at least partially relative to the first jointing part by the pushing force of the second anti-rotation buckle, so that the first locking part and the second locking part are in contact to lock the clamping state of the first jointing part and the second jointing part;And the first anti-rotation buckle is also suitable for being deformed at least partially relative to the first jointing part by external force, so that the first locking part and the second locking part are separated to release the anti-escape limitation of the first jointing part and the second jointing part.

2. The swivel coupling structure of claim 1, wherein The part of the first anti-rotation buckle provided with the first locking part and the side end face extending in the rotating direction of the first jointing part and the second jointing part are both overhanging surfaces separated from the first jointing part.

3. The twist-to-connect mating structure according to claim 1 or 2, characterized by The first anti-rotation buckle is a folded arm;And the first anti-rotation buckle includes a support arm connected with the first jointing part, and a connecting arm connected with the support arm; The end of the connecting arm away from the support arm is provided with the first locking part.

4. The swivel coupling structure of claim 3, wherein The support arm and the connecting arm are in obtuse angle cooperation at the end face away from the second anti-rotation buckle, and when the rotating buckle group between the first jointing part and the second jointing part is clamped in place, the connecting arm is bent relative to the support arm away from the second anti-rotation buckle;And When the first anti-rotation buckle is separated from the second anti-rotation buckle, the first anti-rotation buckle is deformed away from the second anti-rotation buckle.

5. The swivel coupling structure of claim 3, wherein The end face of the first anti-rotation buckle towards the second anti-rotation buckle is an inclined cooperation surface extending obliquely relative to the second locking part; During the rotating cooperation between the first jointing part and the second jointing part, the second locking part is suitable for abutting with part of the inclined cooperation surface to deform the first anti-rotation buckle.

6. The swivel coupling structure of claim 3, wherein At least one side end face of the support arm is provided with a reinforcing rib between the first jointing part.

7. The twist-to-connect mating structure of claim 1 or 2, wherein The second anti-rotation buckle is a straight arm or a folded arm.

8. The swivel coupling structure according to claim 1 or 2, wherein When the rotating buckle group between the first jointing part and the second jointing part is clamped in place, a first gap d is formed between the first locking part and the second locking part in the rotating direction of the first jointing part and the second jointing part; And 0.5mm≤d≤1mm.

9. The twist-to-connect mating structure of claim 1 or 2, wherein, When the rotating buckle group between the first jointing part and the second jointing part is clamped in place, a second gap f is formed between the second locking part and the first anti-rotation buckle perpendicular to the rotating direction of the first jointing part and the second jointing part; And 0.1mm≤f≤0.5mm.

10. The twist-to-connect mating structure of claim 1 or 2, wherein, The first jointing part is also provided with a stop sheet for limiting the maximum deformation of the first anti-rotation buckle when the first anti-rotation buckle and the second anti-rotation buckle are separated;And When the twist buckle group is clamped in place between the first joint and the second joint, the stopper is located on the side of the first twist buckle away from the second twist buckle; and the stopper is adapted to abut against the end of the first twist buckle away from the first joint.

11. A drainage pump, characterized in that Comprising: a motor assembly and a pump assembly used in conjunction; wherein the motor assembly comprises at least a motor housing, and the pump assembly comprises at least a pump housing; the motor housing and the pump housing are connected through a twist buckle type fitting structure as claimed in any one of claims 1-10; the first joint is provided on the motor housing, and the second joint is provided on the pump housing; or the second joint is provided on the motor housing, and the first joint is provided on the pump housing.

12. The drainage pump of claim 11, wherein, the first twist buckle and the second twist buckle are arranged in a high-low staggered manner along the axial direction of the motor assembly.

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