Fixing device

Abstract

The utility model belongs to the technical field of fixation and connection between objects, and particularly relates to a fixing device. Comprising a fixing part and a fastening part, the fixing part is provided with a connecting part and a buckling part, the fastening part is movably arranged on the connecting part and used for fastening the buckling part, the buckling part is provided with a plurality of annularly-arranged buckling strips, a spacing area is formed between every two adjacent buckling strips, and one end of each buckling strip is provided with an inserting part used for being inserted into a mounting hole. And the buckling part has a loosening state in which the plurality of inserting parts are separated and an inward retracting state in which the plurality of inserting parts are gathered. During installation, the buckling part is tightened to form an inward contraction state and is directly clamped into an installation hole in a target object, then the buckling part is loosened to return to a relaxed state, and the buckling part can be clamped into the installation hole to complete installation; and during disassembly, the buckle part is tightened to form an inward shrinkage state, and then the buckle part is directly pulled out from the mounting hole to finish disassembly, so that the disassembly is very convenient and labor-saving.

Description

Technical Field

[0001] The utility model belongs to the technical field of fixing and connecting between objects, and particularly refers to a fixing device. Background Art

[0002] In addition to using integral fixing methods such as welding and adhesion for fixing and connecting between objects, connection and fixation can also be achieved through a fixing device, especially in the case of installing an object onto the installation hole of another object. The existing installation and fixing devices commonly use threaded connection. In this method, an external thread needs to be set on the outside of the fixing part first, and then an internal thread or a mounting nut is set in the installation hole of the target object, and then the fixing part is fixed to the target object in a threaded connection manner.

[0003] For example, in the prior invention patent application CN 110773528 A, a water tower automatic cleaner is proposed. The automatic cleaner is fixed and installed on the installation hole at the bottom of the water tower through a fixing device, and the installation method used is threaded connection. Specifically, a nut is fixed in advance at the installation hole at the bottom of the water tower by welding or other means, and then a thread is set on the outer circumference of the feeding end of the housing. The installation is completed by screwing the feeding end onto the nut. Although this method can achieve installation, the disassembly and assembly are not convenient enough, and the installation difficulty of the nut on the installation hole at the bottom of the water tower is relatively large, with certain defects. Summary of the Invention

[0004] The purpose of the utility model is to provide a fixing device that is convenient for disassembly and assembly to solve the above problems.

[0005] The purpose of the utility model is achieved as follows:

[0006] The utility model provides a fixing device, which has the following characteristics: including a fixing part with a connecting part and a buckling part, and a fastening part movably arranged on the connecting part for fastening the buckling part. Among them, the buckling part has a plurality of buckling strips arranged in a ring shape, and an interval area is formed between adjacent two buckling strips. One end of the buckling strip is provided with an insertion part for inserting into the installation hole. The buckling part has a relaxation state in which a plurality of the insertion parts are separated and a contraction state in which a plurality of the insertion parts are gathered.

[0007] Preferably, in the fixing device proposed by the present utility model, it may further have the following feature: It further includes a locking member provided on the buckle portion, and the locking member has: a locking portion located inside the buckle strip, including an unlocking position for allowing the buckle portion to change from the relaxed state to the retracted state and a locking position for keeping the buckle portion always in the relaxed state, and a driving portion for cooperating with the fastening member. The fastening member is rotatably sleeved outside the connecting portion, and during the rotation of the fastening member, it contacts the driving portion and pushes the locking portion from the unlocking position to the locking position.

[0008] Preferably, in the fixing device proposed by the present utility model, it may further have the following feature: It further includes a pressing ring sleeved outside the buckle portion. The pressing ring has a fitting block that can be embedded in the spacer area in the relaxed state, and a guiding surface for guiding the buckle portion to change from the relaxed state to the retracted state is provided on the fitting block.

[0009] Preferably, in the fixing device proposed by the present utility model, it may further have the following feature: The locking portion is in a circular ring shape or a cylindrical shape and has an outer peripheral surface. The driving portion is a plurality of annular driving blocks arranged at intervals on the outer peripheral surface, and a separating area for the buckle strip to pass through is provided between adjacent driving blocks.

[0010] Preferably, in the fixing device proposed by the present utility model, it may further have the following feature: The fastening member has a rotation direction and a moving direction relative to the connecting portion, and there is an overlapping part in the projection of the pressing ring, the driving block, and the fastening member in the moving direction.

[0011] Preferably, in the fixing device proposed by the present utility model, it may further have the following feature: The driving block passes through the spacer area and contacts the fastening member.

[0012] Preferably, in the fixing device proposed by the present utility model, it may further have the following feature: The inner side of the buckle strip has a first inclined guiding surface, the end surface of the locking portion has a second inclined guiding surface that cooperates with the first inclined guiding surface, and the top of the inserted portion has a hook, and a third inclined guiding surface is provided on the outer side of the hook.

[0013] Preferably, in the fixing device proposed by the present utility model, it may further have the following feature: The pressing ring has: a main body portion in a ring shape, sleeved outside the buckle portion and located at one end of the fastening member, and an acting portion integrally formed at the end of the main body portion away from the fastening member and having the fitting block. The main body portion is provided with an annular fitting groove on the side facing the fastening member of the acting portion, and the driving block passes through the spacer area and is embedded in the annular fitting groove.

[0014] Preferably, in the fixing device proposed by the present utility model, it may further have the following feature: It further includes a sealing portion, and the sealing portion has: a first sealing ring disposed between the pressing ring and the fastener; a second sealing ring disposed at one end of the pressing ring away from the fastener; and a third sealing ring disposed between the connecting portion and the fastener.

[0015] Preferably, in the fixing device proposed by the present utility model, it may further have the following feature: It further includes a sealing portion, and the sealing portion has: a gasket disposed on the end face of the fastener, and a third sealing ring disposed between the connecting portion and the fastener.

[0016] Preferably, in the fixing device proposed by the present utility model, it may further have the following feature: It includes a sealing portion, and the sealing portion has: a gasket disposed on the end face of the driving portion away from the fastener side, and a third sealing ring disposed between the connecting portion and the fastener.

[0017] Preferably, in the fixing device proposed by the present utility model, it may further have the following feature: The connecting portion has a threaded section, and the length of the threaded section in the length direction is greater than or equal to the stroke length of the locking portion moving from the unlocking position to the locking position.

[0018] The prominent and beneficial technical effects of the present utility model compared with the prior art are:

[0019] For the fixing device provided by the present utility model, since there are a fixing member and a fastener, the fixing member has a buckle portion and a connecting portion, the fastener is movably installed on the connecting portion, the buckle portion has a relaxed state and a retracted state. During installation, only need to apply force to tighten the buckle portion to form a retracted state first, then directly snap it into the installation hole on the target object, and then let the buckle portion return to the relaxed state and move the fastener to fix the fixing member on the installation hole; conversely, during disassembly, only need to move the fastener first, loosen the fixing member and the installation hole, then apply force to tighten the buckle portion to form a retracted state, and directly pull it out from the installation hole to complete the disassembly. The disassembly and assembly are very convenient and labor-saving, and the target object only needs to be drilled, without the need to additionally install connecting parts such as nuts, reducing the technical requirements for processing the target object. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the fixing device in Embodiment 1 of the present utility model.

[0021] Figure 2 It is a cross-sectional schematic diagram of the fixing device in Embodiment 1 of the present utility model.

[0022] Figure 3 It is a schematic structural diagram of the fixing member in Embodiment 1 of the present utility model.

[0023] Figure 4 It is an exploded view of the fixing device in Embodiment 1 of the present utility model.

[0024] Figure 5 It is a schematic installation structure diagram of the locking member in Embodiment 1 of the present utility model.

[0025] Figure 6 It is a schematic structure diagram of the locking member in Embodiment 1 of the present utility model.

[0026] Figure 7 It is a schematic cross-sectional view of the locking member in the unlocked position in Embodiment 1 of the present utility model.

[0027] Figure 8 It is a schematic cross-sectional view of the locking member in the locked position in Embodiment 1 of the present utility model.

[0028] Figure 9 It is a schematic cross-sectional view of the snap portion in the relaxed state in Embodiment 2 of the present utility model.

[0029] Figure 10 It is a schematic cross-sectional view of the snap portion in the retracted state in Embodiment 2 of the present utility model.

[0030] Figure 11 It is a schematic cross-sectional view when the fixing device in Embodiment 2 of the present utility model is installed at the bottom of the water tower and the locking member is in the unlocked position.

[0031] Figure 12 It is a schematic cross-sectional view when the fixing device in Embodiment 2 of the present utility model is installed at the bottom of the water tower and the locking member is in the locked position.

[0032] Reference numerals: target object 5, mounting hole 51, fixing device 6, fixing member 61, main body portion 610, threaded section 611, snap portion 612, snap strip 613, hook 6131, first inclined guide surface 6132, annular acting surface 6133, third inclined guide surface 6134, spacer 614, retaining edge 6141, pressing ring 62, main body part 621, acting part 622, insert block 623, guiding surface 6231, annular insert groove 624, fastener 63, internal thread 631, locking member 64, locking portion 641, second inclined guide surface 6411, driving part 642, partition area 643, first sealing ring 651, second sealing ring 652, object 7. Detailed implementation manners

[0033] The present utility model will be further described below in conjunction with specific embodiments:

[0034] It should be noted that the structures, ratios, sizes, etc. shown in the attached drawings of the embodiments of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of this application. Therefore, they do not have any substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that this application can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in this application. At the same time, the terms such as "upper" and "lower" cited in the embodiments of this specification are only for the convenience of description and are not used to limit the scope for the implementation of this application. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope within which this application can be implemented.

[0035] When an element is referred to as being "connected", "arranged", or "installed" on another element, it can be directly connected to the other element or can also be indirectly connected, arranged, or installed on the other element through an intermediate element.

[0036] It should also be noted that in this application, the descriptions involving "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0037] <Example 1>

[0038] This embodiment provides a fixing device 6 for installing an object 7 onto a mounting hole 51 of a target object 5, as Figure 1 and Figure 2 shown. The fixing device 6 includes a fixing member 61, a pressing ring 62, a fastening member 63, and a locking member 64, as Figure 3 and Figure 4 shown. The fixing member 61 has a main body portion 610 in the shape of a sleeve. Above the main body portion 610, there is a connecting portion, which is a threaded section 611. The fastening member 63 is a rotating sleeve (which can be a nut) with an internal thread 631, and is connected to the outer periphery of the threaded section 611 through the internal thread 631 and can rotate relative to the threaded section 611. During the rotation process, the fastening member 63 will move along the axial direction of the fixing member 61, so that the fastening member 63 has a rotation direction and a moving direction. Above the threaded section 611, there is a buckle portion 612 for cooperating with the mounting hole 51. The buckle portion 612 includes several buckle strips 613 arranged in a ring shape. There is a spacing area 614 formed between adjacent two buckle strips 613. One end (lower end) of the buckle strip 613 is integrally connected to the threaded section 611, and the other end (upper end) is provided with an insertion portion having a certain elasticity. This insertion portion can be inserted into the mounting hole 51, and a hook 6131 capable of hooking on the edge of the mounting hole 51 is formed at the end of the insertion portion.

[0039] Since there is a spacer 614 between the snap strips 613 and the inserted part of the snap strip 613 has a certain elasticity, the snap part 612 has a relaxed state in which several snap strips 613 remain vertical and a retracted state in which the snap strips 613 are deformed. In the relaxed state, the inserted parts of the snap strips 613 remain separated; in the retracted state, the inserted parts of the snap strips 613 converge inward and the upper part of the spacer 614 shrinks. When the snap part 612 is in the relaxed state, the outer diameter dimension at its maximum outer diameter (i.e., the diameter of the circle where the outer edge of the hook is located) is greater than the inner diameter of the mounting hole 51; when the snap part 612 is in the retracted state, the outer diameter dimension at its maximum outer diameter is less than the inner diameter of the mounting hole 51. At this time, the snap part 612 can be inserted into the mounting hole 51 for installation.

[0040] The compression ring 62 is sleeved on the outer periphery of the snap part 612 and is used to switch the snap part 612 between the relaxed state and the retracted state. Specifically, as Figure 1 and Figure 4 shown, the compression ring 62 has a main body part 621 and an acting part 622. The main body part 621 is annular, sleeved on the outside of the snap part 612 and located at one end of the fastener 63. The acting part 622 is integrally formed at the end of the main body part 621 away from the fastener 63 and protrudes inward to form a number of inserts 623 that can be embedded in the spacer 614 when the snap part 612 is in the relaxed state. The number of inserts 623 is equal to the number of spacers 614, and each insert 623 is correspondingly embedded in a spacer 614. The span of the spacer 614 in the circumferential direction is greater than the width of the insert 623, and an arc-shaped guiding surface 6231 is provided on one side of the insert 623. The guiding surface 6231 can guide the snap strips 613 to converge with each other, so that the snap part 612 changes from the relaxed state to the retracted state; there is a gap between the other side of the insert 623 and the side surface of the snap strip 613, which is convenient for the state change of the snap part 612.

[0041] The compression ring 62 is installed above the fastener 63, and a first sealing ring 651 is provided between the main body part 621 and the fastener 63. A second sealing ring 652 is provided between the end of the main body part 621 away from the fastener 63 and the edge of the mounting hole 51. A third sealing ring 632 is provided between the connecting part (thread section 611) and the fastener 63. The first sealing ring 651, the second sealing ring 652 and the third sealing ring 632 together form a sealing part. Specifically, as Figure 8 shown, upper and lower grooves are respectively formed on the upper and lower end surfaces of the main body part 621. The first sealing ring 651 is installed in the lower groove, and the second sealing ring 652 is installed in the upper groove to enhance the connection tightness and sealing performance among the target object, the compression ring 62 and the fastener 63.

[0042] When the buckle part 612 is in a relaxed state, the insert block 623 is embedded in the spacer 614. As Figure 1 shown, the guiding surface 6231 is located on the side of the insert block 623 facing the buckle strip 613 on the right. At this time, when the pressing ring 62 is rotated clockwise, under the action of the guiding surface 6231, the buckle strip 613 in the rotation direction will move along the guiding surface 6231, so as to approach the adjacent buckle strip 613 and form a retracted state. On the contrary, when the buckle part 612 is in a retracted state, the pressing ring 62 is rotated in the reverse direction (counterclockwise). Under the action of the guiding surface 6231, the insert block 623 gradually inserts into the spacer 614, so as to separate the buckle strip 613 and return to the relaxed state.

[0043] In order to stably fix and install the buckle part 612 on the mounting hole 51, a locking member 64 is also provided. As Figure 1 shown, the locking member 64 is arranged on the buckle part 612. Combining Figures 5 - 8 , the locking member 64 has a locking part 641 and a driving part 642. The locking part 641 is in an annular shape and is located inside the buckle strip 613, and includes an unlocking position for allowing the buckle part 612 to change from a relaxed state to a retracted state and a locking position for allowing the buckle part 612 to always maintain a relaxed state. When the locking part 641 is in the unlocking position, as Figure 7 shown, at this time, since the locking part 641 is separated from the buckle strip 613, the buckle strip 613 is easily driven by the pressing ring 62 to form a retracted state and be taken out or installed from the mounting hole 51; when the locking part 641 is in the locking position, as Figure 8 shown, at this time, since the locking part 641 has an overlapping part with the buckle strip 613 or the locking part 641 is closely attached to the inner wall of the buckle strip 613, under the blocking of the locking part 641, the buckle strip 613 cannot be deformed to form a retracted state under the drive of the pressing ring 62, so that the buckle part 612 can always maintain a relaxed state, and the buckle part 621 can always stably be stuck on the edge of the mounting hole 51, strengthening the firmness of the installation.

[0044] As Figure 6 and Figure 8 shown, a plurality of driving parts 642 are spacedly distributed on the outer peripheral surface of the locking part 641. The driving part 642 is used to cooperate with the fastener 63. During the rotation process, the fastener 63 contacts the bottom of the driving part 642 and pushes the locking part 641 from the unlocking position upward to the locking position. A partition area 643 for the buckle strip 613 to pass through is provided between adjacent driving blocks 642. As Figure 9As shown, the number of driving parts 642 corresponds to the number of spacer areas 614; the number of snap strips 613 corresponds to the number of partition areas 643. During installation, the driving part 642 extends into the spacer area 614 between the snap strips 613, the snap strip 613 is located in the partition area 643, and the bottom of the driving part 642 extends out of the spacer area 614 and is placed on the top of the fastener 63. As Figure 8 shown, since the fastener 63 is located on the outer periphery of the snap part 612, in order to enable the bottom of the driving part 642 to come into normal contact with the fastener 63, the main body part 621 of the pressing ring 62 is provided with a recessed annular groove 624 (which can also be called an avoidance groove) on the side facing the fastener 63 of the acting part 622. The outer end of the driving block 642 passes through the spacer area 614 and is embedded in the annular groove 624. Opening the annular groove 624 below the acting part 622 can also play a role in restricting the moving stroke of the driving block 642. Since one end (upper end) of the spacer area 614 is open, and the other end (lower end) has a retaining edge 6141 for blocking the driving block 642, the retaining edge 6141 forms a lower limit for the bottom of the driving block 642. Since the acting part 622 is formed with an insert block 623 that can be inserted into the spacer area 614, the insert block 623 can form an upper limit for the driving block 642. When the snap part 612 is in a relaxed state, the locking part 64 can be prevented from falling off under the blocking of the insert block 623; at the same time, the locking part 641 can be pushed to return from the locked position to the unlocked position. In addition, the length of the threaded section 611 that the fastener 63 cooperates with in the length direction is greater than or equal to the stroke length of the locking part 641 moving from the unlocked position to the locked position, so as to ensure that the locking part 641 can be normally switched between the unlocked position and the locked position.

[0045] In this embodiment, the driving part 642 is a fan-shaped block structure with a hollowed-out middle, which can reduce the weight of the driving part and save materials. In actual situations, it can also be other shapes or solid structures. Since the fastener 63 has a rotation direction and a moving direction relative to the connecting part (i.e., the threaded section 611) of the fixing part 61, the driving block 642 only needs to satisfy that the projections of the pressing ring 62, the driving block 642, and the fastener 63 in the moving direction have an overlapping part. In this way, it can not only ensure that the driving block 642 can move under the action of the fastener 63, moving from the unlocked position to the locked position, but also ensure that the driving block 642 will not fall off under the blocking of the pressing ring 62, and at the same time, it can also make the driving block 642 move under the drive of the pressing ring 62, moving from the locked position to the unlocked position.

[0046] As Figure 8 and Figure 5As shown, the inner side of the buckle strip 613 has a first inclined guiding surface 6132, and the upper end surface of the locking portion 641 has a second inclined guiding surface 6411 that cooperates with the first inclined guiding surface 6132. Above the inner side of the buckle strip 613, a circular acting surface 6133 that protrudes inward and is used to interact with the locking portion 641 is formed with the first inclined guiding surface 6132 as the boundary. A locking space for the upper end of the locking portion 641 to be inserted is formed inside the circular acting surface 6133. When the upper end of the locking portion 641 is inserted into the locking space, the locking portion 641 can reach the locking position. The settings of the first inclined guiding surface 6132 and the second inclined guiding surface 6411 can guide the movement of the locking portion 641, making it easier for its upper end to be inserted into the locking space.

[0047] The top of the insertion part of the buckle strip 613 has a hook 6131 that can be hooked on the edge of the mounting hole 51, and a third inclined guiding surface 6134 is provided outside the hook 6131 to facilitate guiding when being installed into the mounting hole 51.

[0048] As can be seen from the above, since the buckle portion 612 is provided on the fixing member 61 of the fixing device 6, and a pressing ring 62 is provided outside the buckle portion 612. During installation, only need to rotate the pressing ring 62, the pressing ring 62 will drive the buckle portion 612 to tighten and form a retracted state, and then it can be directly snapped into the mounting hole 51 on the target object 5. Then rotate the pressing ring 62 in the reverse direction to make the buckle portion 612 return from the retracted state to the relaxed state. At this time, the buckle portion 612 can be snapped in the mounting hole 51 to complete the installation; on the contrary, during disassembly, only need to drive the buckle portion 612 to tighten and form a retracted state by rotating the pressing ring 62, and then directly pull it out from the mounting hole 51 to complete the disassembly. The disassembly and assembly are very convenient and labor-saving, and the target object only needs to be drilled, greatly reducing the technical requirements.

[0049] <Example 2>

[0050] In this embodiment, the installation of the cleaning device at the bottom of the water tower is used as the implementation scenario. The fixing device is used to install the cleaning device at the bottom of the water tower to clean the water tower. The fixing device is the fixing device 6 in Example 1, the cleaning device is the object 7, and the water tower is the target object 5. The fixing member 61 is in the shape of a shell and can be used to install the cleaning device inside. The cleaning device is installed on the mounting hole 51 at the bottom of the water tower 5 through the fixing member 61. In this embodiment, since the fixing device 6 is used for the installation of the cleaning device on the water tower, therefore, in order to install the cleaning device, the fixing member 61, the pressing ring 62, and the locking member 64 are all provided with a hollow structure, that is, the locking portion 641 is in a circular ring shape and the middle part can allow the cleaning device to pass through.

[0051] The fixing method of the cleaning device in this embodiment includes the following steps:

[0052] S1: Check the buckle part 612 to make the buckle strip 613 on the buckle part 612 in a relaxed state. At this time, the locking part 641 is separated from the locking area inside the buckle strip 613, as shown in Figure 9 the state shown;

[0053] S2: Rotate the pressing ring 62 in the clockwise direction. The buckle strip 613 contracts under the action of the pressing ring 62, causing the buckle part 612 to change to a retracted state, as shown in Figure 10 the state shown. After tightening, insert it into the mounting hole 51 from bottom to top;

[0054] S3: After confirming that the buckle part 612 enters the mounting hole 51, release the pressing ring 62. The buckle part 612 gradually returns to the relaxed state and hooks on the inner edge of the mounting hole 51, as shown in Figure 11 the state shown;

[0055] S4: Rotate the fastener 63. The fastener 63 drives the pressing ring 62 and the locking part 64 to move upward. After the locking part 64 moves from the unlocking position to the locking position, the installation and fixation are completed. At this time, the upper end of the locking part 641 has extended into the locking area inside the buckle strip 613, and the pressing ring 62 is tightly pressed between the fastener 63 and the bottom of the water tower, as shown in Figure 12 the state shown.

[0056] The disassembly method of the cleaning device in this embodiment includes the following steps:

[0057] N1: Rotate the tightening part 63 to loosen it;

[0058] N2: Press down the pressing ring 62 to drive the locking part 64 to move downward, so that the locking part 64 moves from the locking position to the unlocking position;

[0059] N3: Move the pressing ring 62 upward and rotate it or directly rotate the pressing ring 62 to change the buckle part 612 from the relaxed state to the retracted state. After tightening, pull it out from top to bottom, and the buckle part 612 is separated from the mounting hole 51, then the disassembly can be completed.

[0060] <Example 3>

[0061] This embodiment is a simplified version of the above-mentioned Embodiment 1 or 2, that is, the fixing device only has a fixing member 61, a fastening member 63, and a sealing portion (i.e., the pressing ring and the locking member are cancelled based on Embodiment 1). Among them, the structures of the fixing member 61 and the fastening member 63 are the same as those in the above-mentioned Embodiment 1. The sealing portion includes a sealing gasket provided on the top surface of the fastening member 63 and a third sealing ring 632 pressed between the fastening member 63 and the fixing member 61. During installation, directly tighten the buckle portion 612 on the fixing member 61 by hand to form a retracted state, then insert it into the mounting hole 51 from bottom to top. After releasing the hand, let the buckle portion 612 return to the relaxed state, and then rotate the fastening member 63 until the sealing gasket on the top of the fastening member 63 closely adheres to the outer surface of the mounting hole 51 to complete the installation.

[0062] <Embodiment 4>

[0063] Based on the above-mentioned Embodiment 3, this embodiment is provided with a locking member 64 as in Embodiment 1 (i.e., the pressing ring is cancelled based on Embodiment 1). The structure of the locking member 64 is the same as that in Embodiment 1. At this time, the sealing portion includes a sealing gasket provided on the top surface of the driving portion 642 of the locking member 64 (i.e., the end surface on the side away from the fastening member) and a third sealing ring 632 pressed between the fastening member 63 and the fixing member 61. During installation, directly tighten the buckle portion 612 on the fixing member 61 by hand to form a retracted state, then insert it into the mounting hole 51 from bottom to top. After releasing the hand, let the buckle portion 612 return to the relaxed state, and then rotate the fastening member 63. The locking member 64 is pushed up by the fastening member 63 to the locked state until the sealing gasket on the top surface of the driving portion 642 closely adheres to the outer surface of the mounting hole 51 to complete the installation.

[0064] The above embodiments are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention. For example, in the above-mentioned Embodiment 2, the installation of the cleaning device at the bottom of the water tower is used as an example for description. In actual situations, it can also be used for the installation of other objects, especially in the case of installing an object into the hole position of another object. At this time, if the object does not need to be installed through the component at the locking portion 641, the locking portion 641 can also be set as a solid cylindrical shape. In addition, if it involves some connection structures that do not require sealing, the sealing portion in the above embodiments can also be directly cancelled.

Claims

1. A fixing device for being mounted on a mounting hole of a target object, characterized in that, Comprising: A fixing member having a connecting portion and a buckling portion; A fastening member movably disposed on the connecting portion for fastening the buckling portion; Wherein, the buckling portion has a plurality of buckling strips arranged in a ring shape, an interval area is formed between adjacent two of the buckling strips, one end of each buckling strip is provided with an insertion portion for inserting into the mounting hole, and the buckling portion has a relaxed state in which a plurality of the insertion portions are separated and a retracted state in which a plurality of the insertion portions are gathered.

2. The fixing device according to claim 1, characterized in that, It further includes a locking member disposed on the buckling portion, and the locking member has: A locking portion located inside the buckling strip, including an unlocking position for allowing the buckling portion to change from the relaxed state to the retracted state and a locking position for keeping the buckling portion always in the relaxed state; A driving portion for cooperating with the fastening member; The fastening member is rotatably sleeved outside the connecting portion, and during rotation, the fastening member contacts the driving portion and pushes the locking portion from the unlocking position to the locking position.

3. The fixing device according to claim 2, characterized in that: It further includes a pressing ring sleeved outside the buckling portion, and the pressing ring has a block that can be embedded in the interval area in the relaxed state, and a guiding surface for guiding the buckling portion to change from the relaxed state to the retracted state is provided on the block.

4. The fixing device according to claim 3, characterized in that: The locking portion is in a circular ring shape or a cylindrical shape and has an outer peripheral surface. The driving portion is a plurality of annular driving blocks arranged at intervals on the outer peripheral surface. A separation area for the buckling strip to pass through is provided between adjacent driving blocks. The fastening member has a rotation direction and a moving direction relative to the connecting portion, and the projections of the pressing ring, the driving block, and the fastening member in the moving direction have an overlapping portion.

5. The fixing device according to any one of claims 2-4, characterized in that: A first inclined guiding surface is provided inside the buckling strip, a second inclined guiding surface for cooperating with the first inclined guiding surface is provided on the end surface of the locking portion, and a hook is provided at the top of the insertion portion, and a third inclined guiding surface is provided on the outer side of the hook.

6. The fixing device according to claim 4, characterized in that: The pressing ring has: A main body portion in a ring shape, sleeved outside the buckling portion and located at one end of the fastening member; An acting portion integrally formed at one end of the main body portion away from the fastening member and having the block; An annular embedding groove is provided on the side of the main body portion facing the acting portion and towards the fastening member, and the driving block passes through the interval area and is embedded in the annular embedding groove.

7. The fixing device according to claim 3, characterized in that: It further includes a sealing portion, and the sealing portion has: A first sealing ring disposed between the pressing ring and the fastening member; A second sealing ring disposed at one end of the pressing ring away from the fastening member; And A third sealing ring disposed between the connecting portion and the fastening member.

8. The fixing device according to claim 1, characterized in that: It further includes a sealing portion, and the sealing portion has: A gasket disposed on the end surface of the fastening member; A third sealing ring disposed between the connecting portion and the fastening member.

9. The fixing device according to claim 2, characterized in that: It further includes a sealing portion, and the sealing portion has: A gasket disposed on the end surface of the driving portion away from the fastening member; A third sealing ring disposed between the connecting portion and the fastening member.

10. The fixing device according to claim 2 or 9, characterized in that: A threaded section is provided on the connecting portion, and the length of the threaded section in the length direction is greater than or equal to the stroke length of the locking portion moving from the unlocking position to the locking position.

Images