Quickly-mounted wall surface fixing device and hidden water tank bracket

Abstract

The utility model provides a fast-assembly wall surface fixing device and a hidden water tank support, the fixing device comprises a screw rod and a fixing seat, and the fixing seat is provided with a through hole for the screw rod to pass through; a guide part is arranged on the peripheral wall of the through hole, and the peripheral circle center of the guide part and the circle center of the through hole are eccentrically arranged; the periphery of the guide part is sleeved with a locking part, and the locking part is in circumferential rotation fit with the guide part; the locking part is provided with a boss; the locking part rotates along the guide part until the boss abuts against the screw rod, and the screw rod is locked; and the locking part rotates forwards or reversely until the boss is separated from the screw rod, and the screw rod is unlocked. The screw rod is quickly locked and loosened by rotating the locking part, so that the distance between the support frame and the wall surface is quickly adjusted, or the support frame is quickly disassembled; the locking part is rotated for clamping, and the supporting frame and the wall face are fixed. The whole disassembly and assembly process can be completed only by rotating the locking part, no extra disassembly and assembly tool is needed, and simplicity and convenience are achieved.

Description

Technical Field

[0001] The utility model relates to the field of installation accessories, in particular to a quick-install wall fixing device and a hidden water tank bracket. Background Art

[0002] At present, consumers are increasingly choosing wall-mounted bathroom equipment, which is beautiful, easy to clean, and can make full use of the bathroom space. Wall-mounted bathroom equipment needs to be installed with a support frame, which is fixed in the wall in advance and then wrapped with decorative walls. The support frame is fixed to the wall using a wall fixture, such as Figure 1 The conventional wall fixing device is usually a base 1 that can be fixed on the wall, with a threaded hole 2 on the base, and a screw 3 connecting a support frame 4 and the threaded hole 2 of the base for fixing. Such a wall fixing device usually requires a specific installation tool, which is inconvenient to operate and the installation process is cumbersome. Especially for a support frame with a large adjustment range, it is impossible to quickly adjust the distance, and the adjustment process takes a long time, which increases the installation cost. Utility Model Content

[0003] In order to solve the above problems, the purpose of the utility model is to provide a quick-install wall fixing device and a hidden water tank bracket, which do not require specific installation tools, can quickly adjust the distance between the support frame and the wall, can be quickly disassembled and assembled, and the installation process is simple and convenient.

[0004] The utility model is realized by the following technical solutions:

[0005] A quick-install wall fixing device comprises a screw and a fixing seat, wherein the fixing seat is provided with a through hole for the screw to pass through; a guide portion is provided on the outer peripheral wall of the through hole, and the outer peripheral center of the guide portion is eccentrically arranged with the center of the through hole; a locking portion is provided on the outer peripheral sleeve of the guide portion, and the locking portion and the guide portion are circumferentially rotatable; the locking portion is provided with a boss; the locking portion rotates along the guide portion until the boss abuts against the screw, and the screw is locked; the locking portion rotates forwardly or reversely until the boss is separated from the screw, and the screw is unlocked.

[0006] Furthermore, an internal thread groove adapted to the external thread of the screw is provided on a side of the boss facing the screw, and the center of the internal thread groove is eccentrically arranged with respect to the center of the locking portion.

[0007] Furthermore, the eccentric distance between the center of the internal thread groove and the center of the locking portion is L2, and the eccentric distance between the center of the through hole and the center of the outer circumference of the guide portion is L1, wherein L1=L2, and when the boss clamps the screw, the center of the internal thread groove coincides with the center of the through hole.

[0008] Furthermore, the guide portion is detachably connected to the fixing seat; a stop groove is provided on the outer wall of the through hole, and a stop protrusion adapted to the stop groove is provided on the inner wall of the guide portion; the stop groove and the stop protrusion cooperate to limit the circumferential position of the guide portion.

[0009] Furthermore, a radial opening is provided on the side wall of the through hole, and radial clearance holes are provided at positions corresponding to the guide portion and the opening, and the boss passes through the radial clearance hole and the radial opening to cooperate with the screw; the radial opening is opened along the circumference of the through hole, and the radial clearance hole is opened along the circumference of the guide portion; and the boss abuts against the end faces of the radial opening and the radial clearance hole to limit the axial position of the guide portion and the locking portion.

[0010] Furthermore, a groove is circumferentially provided on the outer wall of the guide portion, and at least one protrusion is provided in the groove; a rib is provided on the inner wall of the locking portion, and the rib cooperates with the protrusion to limit the circumferential rotation of the locking portion; the end wall of the groove and one of the protrusions form a first limiting groove, and when the boss clamps the screw, the rib is located in the first limiting groove; and / or, the end wall of the groove and another of the protrusions form a second limiting groove, and when the boss loosens the screw, the rib is located in the second limiting groove.

[0011] Furthermore, the guide portion is integrally formed with the fixing seat; a radial opening is provided on the side wall of the through hole, the radial opening is opened along the circumference of the through hole and extends axially to the end face of the through hole, and the boss passes through the radial opening to cooperate with the screw.

[0012] Furthermore, the side wall of the through hole is provided with an opening, and the boss passes through the opening and cooperates with the screw; the guide part and the fixing seat are detachably connected; it also includes a limiting part sleeved on the outer peripheral wall of the through hole, and the limiting part is used to axially fix the guide part; one of the guide part and the locking part is provided with a spring pin, and the other of the guide part and the locking part is provided with a fixing through hole that cooperates with the spring pin; when the boss is separated from the screw, the spring pin is compressed and abuts against the inner wall of the locking part; when the boss abuts against the screw, the spring pin restores its deformation and extends into the fixing through hole to limit the circumferential rotation of the locking part.

[0013] Further, the guiding portion is located on the side of the boss away from the fixing seat; the limiting portion is located on the side of the boss close to the fixing seat; the limiting portion is provided with a first fastener toward the guiding portion, and a second fastener is provided at the end of the guiding portion extending toward the limiting portion; one of the first fastener and the second fastener is a slot, and the other of the first fastener and the second fastener is a hook adapted to the slot.

[0014] Furthermore, a lever is provided on the side wall of the elastic pin, and the end of the guide portion extends radially and is provided with a clearance groove for the lever to move along the extension and retraction direction of the elastic pin; or, the end of the locking portion extends axially and is provided with a clearance groove for the lever to move along the extension and retraction direction of the elastic pin; when the lever moves toward the clearance groove to the maximum displacement, the end of the elastic pin disengages from the fixed through hole.

[0015] A hidden water tank bracket comprises a bracket body and the above-mentioned fixing device.

[0016] Compared with the prior art, the technical solution of the utility model and its beneficial effects are as follows:

[0017] (1) The utility model discloses a quick-install wall fixing device, wherein the fixing seat and the locking part are eccentrically arranged, and the screw can be quickly locked and loosened by rotating the locking part. When loosening, the distance between the support frame and the wall can be quickly adjusted or removed. After locking, the support frame and the wall are fixed, and the assembly and disassembly process can be directly operated by hand, which is simple and convenient.

[0018] (2) The utility model provides a groove in the circumferential direction of the outer wall of the guide portion, and the two end walls of the groove respectively form a first limiting groove and a second limiting groove with the two protrusions. When the boss clamps the screw, the rib is located in the first limiting groove, and when the boss loosens the screw, the rib is located in the second limiting groove, thereby preventing the locking portion from rotating freely relative to the guide portion.

[0019] (3) When the boss and the screw are clamped together, the spring pin is inserted into the fixed through hole, so that the locking portion is fixed relative to the guide portion and cannot be rotated at will, thereby improving the stability of the boss clamping the screw; the lever is pushed to compress the spring pin until the end of the spring pin leaves the fixed through hole, and the locking portion can be rotated to loosen the clamping of the screw, thereby achieving quick release. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of a fixing device for fixing an existing support frame to a wall provided in an embodiment of the utility model;

[0021] Figure 2 This is an exploded view of a quick-install wall fixing device provided in the first embodiment of the utility model;

[0022] Figure 3 This is a front view of the fixing seat and the guide part after being assembled provided by the first embodiment of the utility model;

[0023] Figure 4 It is a cross-sectional view of the boss locking screw provided in the first embodiment of the utility model;

[0024] Figure 5It is a cross-sectional view of a boss loosening screw provided in the first embodiment of the utility model;

[0025] Figure 6 It is a front view of the locking portion provided in the first embodiment of the utility model;

[0026] Figure 7 It is a motion trajectory diagram of the center of the inner thread groove on the inner side of the boss provided in the first embodiment of the utility model;

[0027] Figure 8 This is a diagram of the rib limiting state of the locking part when the boss and the screw are locked, provided in the first embodiment of the utility model;

[0028] Fig. 9 This is a diagram of the rib limiting state of the locking portion when the boss and the screw are loosened according to the first embodiment of the present invention;

[0029] Fig.10 This is an exploded view of a quick-install wall fixing device provided in the second embodiment of the utility model;

[0030] Fig.11 This is an exploded view of a quick-install wall fixing device provided in Embodiment 3 of the present utility model;

[0031] Fig.12 This is the locking state of the boss and the screw of the locking part provided in the third embodiment of the utility model, and the screw is not shown;

[0032] Fig.13 This is the state where the boss of the locking part provided in the third embodiment of the present invention is loosened from the screw, and the screw is not shown;

[0033] Fig.14 is a cross-sectional view of a wall fixing device provided in Embodiment 3 of the present utility model;

[0034] Fig.15 This is an assembly diagram of the water tank bracket provided by the fourth embodiment of the present utility model and fixed to the wall.

[0035] Illustration Description:

[0036] Base-1; threaded hole-2; screw-3; support frame-4;

[0037] Fixed seat-10, 40, 70; through hole-11, 41, 71; radial opening-12, 42, 72; anti-rotation groove-13, 73;

[0038] Guide part-20, 50, 80; guide part periphery-201; radial clearance hole-21; groove-22, 52; first protrusion-23; second protrusion 24; first limiting groove-25; second limiting groove-26; anti-rotation protrusion-27, 87; elastic pin-81; lever-811; clearance groove-82; second buckle-83;

[0039] Locking part-30, 60, 90; half clamp-301; mounting ear-302; fastener-303; boss-31, 61, 91; rib-32; fixing through hole-92;

[0040] Limiting portion-80a; first buckle member-81a;

[0041] Screw rod - 100; bracket body - 200. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0043] Embodiment 1

[0044] See also Figure 2 and Figure 3 A quick-install wall fixing device includes a screw 100 and a fixing seat 10. The fixing seat 10 is provided with a through hole 11 for the screw 100 to pass through. A guide portion 20 is provided on the outer peripheral wall of the through hole 11. The center B of the outer periphery 201 of the guide portion is eccentrically arranged with the center A of the through hole 11. A locking portion 30 is sleeved on the outer periphery of the guide portion 20. The locking portion 30 is rotatably matched with the guide portion 20. The locking portion 30 is provided with a boss 31. The locking portion 30 rotates along the guide portion 20 until the boss 31 abuts against the screw 100, and the screw is locked. Figure 4 , the locking portion 30 rotates forward or reversely until the boss 31 is separated from the screw 100, and the screw 100 is unlocked. Figure 5. Thus, the screw 100 can be quickly locked and loosened by rotating the locking part 30. When loosening the screw 100, the length of the screw 100 in the through hole 11 can be moved to quickly adjust the distance between the support frame and the wall, or the support frame can be quickly disassembled; after the locking part 30 is rotated to clamp the screw 100, the support frame and the wall are fixed. The entire disassembly and assembly process can be completed by rotating the locking part (the rotation range does not exceed half a circle), without the need for additional disassembly and assembly tools, which is simple and convenient.

[0045] See also Figure 6 , the side of the boss 31 facing the screw 100 is provided with an internal thread groove 311 adapted to the external thread of the screw 100, and the center D of the internal thread groove 311 is eccentrically arranged with respect to the center C of the locking portion 30. Specifically, the eccentric distance between the center D of the internal thread groove 311 and the center C of the locking portion 30 is L2, and the eccentric distance between the center A of the through hole 11 and the center B of the outer periphery 201 of the guide portion is L1, wherein L1=L2. It can be understood that the boss 31 rotates circumferentially along the outer periphery 201 of the guide portion following the locking portion 30, and the center D of the internal thread groove 311 moves circumferentially with respect to the center C of the locking portion as the center, and the motion trajectory F of the center D of the internal thread groove 311 is a circle with the center C of the locking portion as the center and L2 as the radius, as shown in FIG. Figure 7 As shown. The center B of the outer periphery 201 of the guide portion overlaps with the center C of the locking portion. When the locking portion 30 rotates one circle, the motion trajectory of the center D of the internal thread groove 311 must overlap with the center A of the through hole once. When the center D of the internal thread groove 311 coincides with the center A of the through hole 11, the boss 31 clamps the screw 100. Thereafter, whether the locking portion 30 is rotated clockwise or counterclockwise, the boss 31 can gradually loosen the grip on the screw 100.

[0046] Continue reading Figure 2 In this embodiment, the guide part 20 is detachably connected to the fixing seat 10. A radial opening 12 is provided on the side wall of the through hole 11, and a radial clearance hole 21 is provided at the corresponding position of the guide part 20 and the radial opening 12. The boss 31 passes through the radial clearance hole 21 and the radial opening 12 and cooperates with the screw 100. The boss 31 abuts against the end faces of the radial opening 12 and the radial clearance hole 21 to limit the axial position of the guide part 20 and the locking part 30. The radial opening 12 is provided along the circumference of the through hole 11, and the radial clearance hole 21 is provided along the circumference of the guide part 20, so that the locking part 30 can rotate circumferentially within the range of the radial opening 12 and the radial clearance hole 21. A stop groove 13 is provided on the outer wall of the through hole 11, and a stop protrusion 27 adapted to the stop groove 13 is provided on the inner wall of the guide part 20. The stop groove 13 and the stop protrusion 27 cooperate to limit the guide part 20 circumferentially.

[0047] The locking part 30 of this embodiment includes two half-pieces of the clamp 301, both of which are semicircular, with both ends of the semicircular bent outward to form mounting ears 302, and the boss 31 is arranged on the inner wall of one half of the clamp 301. During production and assembly, the boss 31 is inserted into the opening 12 (the clearance hole 21), and the rib 32 is inserted into the groove 22, and then the two half-pieces of the clamp 301 are enclosed to form a clamp, and the mounting ears 302 are connected in pairs by fasteners 303. The mounting ears 302 form a gripping part for rotating the locking part 30, which is convenient for rotating the locking part 30.

[0048] See also Figure 8 and Fig. 9 The outer wall of the guide portion 20 is provided with a groove 22 in the circumferential direction, and a first protrusion 23 is provided in the groove 22; the inner wall of the locking portion 30 is provided with a rib 32, and the rib 32 cooperates with the first protrusion 23 to limit the circumferential rotation of the locking portion 30. In this embodiment, the first protrusion 23 and the end wall of the groove 22 form a first limiting groove 25, and when the boss 31 clamps the screw 40, the rib 32 is located in the first limiting groove 25, so that the locking portion 30 can be fixed at this position relative to the guide portion 20 in the absence of external force, so as to keep the screw 40 in a clamped state. Furthermore, a second protrusion 23 can also be provided, the second protrusion 23 is close to the other end of the groove 22, and the second protrusion 24 and the other end wall of the groove 22 form a second limiting groove 26. When the screw 40 needs to be loosened, the groove 22 is rotated in the opening direction so that the rib 32 moves from the first limiting groove 25 toward the second limiting groove 26, and the protrusion 31 gradually loosens the clamping of the screw 40, so that the screw 40 can move relative to the through hole 11. Figure 8 When adjusting or disassembling, the locking part 30 can be rotated until the rib 32 is locked in the second limiting groove 26 to prevent the locking part from rotating arbitrarily and causing interference to the adjustment or disassembly. Fig. 9 More preferably, the length of the groove 22 is less than or equal to one half of the outer circumference of the guide portion 20 .

[0049] Embodiment 2

[0050] The principle of this embodiment is the same as that of the first embodiment, except that the structure of the guide portion of this embodiment and the cooperation with the locking portion are different.

[0051] See also Fig.10In this embodiment, the guide portion 50 is sleeved on the outer peripheral wall of the through hole 41 and the guide portion 50 and the fixing seat 40 are integrally formed. A radial opening 42 is provided on the side wall of the through hole 41. A clearance hole is provided at the corresponding position of the guide portion 50 and the radial opening 42. The radial opening 42 is provided along the circumference of the through hole 41 and extends to the end face of the through hole 41 in the axial direction. The boss 61 passes through the radial opening 42 and cooperates with the screw. A groove 52 is provided on the outer wall of the guide portion 50 in the circumferential direction. The ribs of the locking portion 60 are inserted into the groove 52, thereby limiting the axial position of the locking portion 60. The locking portion 60 rotates circumferentially within the circumferential range of the radial opening 42. It can be understood that a protrusion is also provided in the groove 52 to limit the free rotation of the locking portion 60 in the circumferential direction.

[0052] Embodiment 3

[0053] The principle of this embodiment is the same as that of the first embodiment, except that the structure of the guide portion of this embodiment and the cooperation with the locking portion are different.

[0054] See also Figures 11 to 14 The guide part 80 is detachably connected to the fixing seat 70. The outer wall of the through hole 71 is provided with a stop groove 73. The inner wall of the guide part 80 is provided with a stop projection 87 adapted to the stop groove 73. The stop groove 73 and the stop projection 87 cooperate to limit the circumferential position of the guide part 80. The side wall of the through hole 71 is provided with a radial opening 72. The boss 91 of the locking part 90 passes through the radial opening 72 and cooperates with the screw. The boss 91 abuts against the end surface of the radial opening 72 to limit the axial position of the locking part 90.

[0055] The fixing device also includes a limiting portion 80a sleeved on the outer peripheral wall of the through hole 71, and the limiting portion 80a is used to axially fix the guide portion 80. Specifically, the guide portion 80 is located on the side of the boss 91 away from the fixing seat 70, and the limiting portion 80a is located on the side of the boss 91 close to the fixing seat 70. The limiting portion 80a is provided with a first clip 81a toward the guide portion 80, and the end of the guide portion 80 is extended toward the limiting portion 80a and provided with a second clip 83, one of the first clip 81a and the second clip 83 is a card slot, and the other of the first clip 81a and the second clip 83 is a hook adapted to the card slot, so that the guide portion 80 and the limiting portion 80a are closely abutted on both sides of the boss 91, and the guide portion 80 is limited in the axial direction by cooperating with the limiting portion 80a and the boss 91. By limiting the circumferential and axial directions of the guide portion 80, the guide portion 80 is fixed to the outer peripheral wall of the through hole 71.

[0056] One of the guide part 80 and the locking part 90 is provided with an elastic pin, and the other of the guide part 80 and the locking part 90 is provided with a fixing through hole that cooperates with the elastic pin 81. In this embodiment, the outer peripheral wall of the guide part 80 is provided with an elastic pin 81, and the locking part 90 is provided with a fixing through hole 92. When the boss 91 is separated from the screw rod, the compressed elastic pin 81 abuts against the inner wall of the locking part 90, and the locking part 90 is able to rotate circumferentially. Fig.12 .like Fig.13 When the boss 91 abuts against the screw, the spring pin 81 rotates to be opposite to the fixed through hole 92, and the spring pin 81 recovers its deformation and extends into the fixed through hole 92 to limit the circumferential rotation of the locking portion 90, so that the boss 91 stably presses the screw and improves the stability of the locking state.

[0057] In this embodiment, a lever 811 is provided on the side wall of the spring pin 81, and a clearance groove 82 for the lever 811 to move is provided at the end of the guide portion 80 and radially extends along the extension and retraction direction of the spring pin 81; the lever 811 moves toward the clearance groove to the maximum displacement, and the end of the spring pin 81 disengages from the fixed through hole 92, so that the locking portion 90 can rotate relative to the guide portion 80 to loosen the clamping of the screw.

[0058] In other embodiments, a lever is provided on the side wall of the elastic pin, and the end of the locking portion extends axially and is provided with a clearance groove (not shown) for the lever to move along the extension and retraction direction of the elastic pin; the lever moves toward the clearance groove to the maximum displacement, and the end of the elastic pin disengages from the fixed through hole, so that the locking portion can rotate relative to the guide portion to loosen the clamping of the screw.

[0059] Embodiment 4

[0060] See also Fig.15 This embodiment also provides a hidden water tank bracket, including a bracket body 200 and the fixing device described in the first embodiment, the second embodiment or the third embodiment.

[0061] The above description shows and describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept of this article through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A quick-install wall fixing device, comprising a screw and a fixing seat, characterized in that: The fixing seat is provided with a through hole for the screw to pass through; a guiding part is provided on the outer peripheral wall of the through hole, and the outer peripheral center of the guiding part is eccentrically arranged with the center of the through hole; a locking part is provided on the outer peripheral sleeve of the guiding part, and the locking part and the guiding part are circumferentially rotatable; the locking part is provided with a boss; the locking part rotates along the guiding part until the boss abuts against the screw, and the screw is locked; the locking part rotates forward or reversely until the boss is separated from the screw, and the screw is unlocked.

2. A quick-install wall fixing device according to claim 1, characterized in that: An internal thread groove matched with the external thread of the screw is arranged on one side of the boss facing the screw, and the center of the internal thread groove is eccentric to the center of the locking portion.

3. A quick-install wall fixing device according to claim 2, characterized in that: The eccentric distance between the center of the internal thread groove and the center of the locking portion is L2, and the eccentric distance between the center of the through hole and the center of the outer circumference of the guide portion is L1, wherein L1=L2. When the boss clamps the screw, the center of the internal thread groove coincides with the center of the through hole.

4. A quick-install wall fixing device according to claim 1, characterized in that: The guide part is detachably connected to the fixing seat; a stop groove is provided on the outer wall of the through hole, and a stop protrusion adapted to the stop groove is provided on the inner wall of the guide part; the stop groove and the stop protrusion cooperate to limit the circumferential position of the guide part.

5. A quick-install wall fixing device according to claim 4, characterized in that: A radial opening is provided on the side wall of the through hole, and radial clearance holes are provided at positions corresponding to the guide portion and the opening, and the boss passes through the radial clearance hole and the radial opening and cooperates with the screw; the radial opening is provided along the circumference of the through hole, and the radial clearance hole is provided along the circumference of the guide portion; and the boss abuts against the end faces of the radial opening and the radial clearance hole to limit the axial position of the guide portion and the locking portion.

6. A quick-install wall fixing device according to any one of claims 1 to 5, characterized in that: The outer wall of the guide part is circumferentially provided with a groove, and at least one protrusion is provided in the groove; the inner wall of the locking part is provided with a rib, and the rib cooperates with the protrusion to limit the circumferential rotation of the locking part; the end wall of the groove and one of the protrusions form a first limiting groove, and when the boss clamps the screw, the rib is located in the first limiting groove; and / or, the end wall of the groove and another of the protrusions form a second limiting groove, and when the boss loosens the screw, the rib is located in the second limiting groove.

7. The quick-install wall fixing device according to claim 1, characterized in that: The guide portion is integrally formed with the fixing seat; a radial opening is provided on the side wall of the through hole, the radial opening is opened along the circumference of the through hole and extends axially to the end face of the through hole, and the boss passes through the radial opening and cooperates with the screw.

8. The quick-install wall fixing device according to claim 1, characterized in that: The side wall of the through hole is provided with an opening, and the boss passes through the opening and cooperates with the screw rod; The guide portion is detachably connected to the fixing seat; it also includes a limiting portion sleeved on the outer peripheral wall of the through hole, and the limiting portion is used to axially fix the guide portion; one of the guide portion and the locking portion is provided with a spring pin, and the other of the guide portion and the locking portion is provided with a fixing through hole that cooperates with the spring pin; when the boss is separated from the screw rod, the spring pin is compressed and abuts against the inner wall of the locking portion; when the boss abuts against the screw rod, the spring pin restores its deformation and extends into the fixing through hole to limit the circumferential rotation of the locking portion.

9. A quick-install wall fixing device according to claim 8, characterized in that: The guiding portion is located on the side of the boss away from the fixing seat; the limiting portion is located on the side of the boss close to the fixing seat; the limiting portion is provided with a first fastener toward the guiding portion, and a second fastener is provided at the end of the guiding portion extending toward the limiting portion; one of the first fastener and the second fastener is a slot, and the other of the first fastener and the second fastener is a hook adapted to the slot.

10. The quick-install wall fixing device according to claim 8, characterized in that: A lever is provided on the side wall of the elastic pin, and the end of the guide portion extends radially and is provided with a clearance groove for the lever to move along the extension and contraction direction of the elastic pin; or, the end of the locking portion extends axially and is provided with a clearance groove for the lever to move along the extension and contraction direction of the elastic pin; when the lever moves toward the clearance groove to the maximum displacement, the end of the elastic pin disengages from the fixed through hole.

11. A hidden water tank bracket, characterized in that: It comprises a bracket body and the quick-install wall fixing device according to any one of claims 1 to 10.

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