Wall-mounted device

Abstract

A wall-mounted device includes a wall fixing plate, a wall-mounted component, and a spiral spring. The wall fixing plate includes a fixing portion, an abutting portion, and a first fitting portion. The wall-mounted component includes a housing and a fixing member. The housing has a back surface provided with a spring installation area and a second fitting portion. The spiral spring is disposed in the spring installation area and includes an inner arc segment, an outer arc segment, and an arc connecting segment.

Description

Technical Field

[0001] The present invention relates to a wall-mounted device, in particular to a wall-mounted device with a spiral spring. Background Art

[0002] In order to save space, enhance aesthetics, increase safety or meet other usage requirements, many products are fixed to the wall by hanging. For example, surveillance cameras can be hung on the walls of various places (such as nurseries, offices or stores, etc.) as a communication medium between the indoors and outdoors, and doorbell devices can be installed on the walls at the entrances and exits of residential houses, office places or commercial buildings for security monitoring or recording personnel activities.

[0003] Generally speaking, in order to prevent products from falling off the wall, when assembling current wall-mounted products, a plate member is mostly fixed to the wall first, and the product is then screwed to the plate member. Therefore, when assembling or disassembling the product, it is quite time-consuming and inconvenient to rotate the screws with hand tools. In addition, since the space between the product and the plate member is very narrow, it further increases the difficulty of assembling or disassembling the product. Summary of the Invention

[0004] In view of the above, in one embodiment, a wall-mounted device is provided, which includes a wall fixing plate, a wall-mounted member and a spiral spring. The wall fixing plate includes a fixing part, a top abutting part and a first fitting part. The wall-mounted member includes a housing and a fixing member. The housing has a back surface, on which a spring installation area and a second fitting part are provided. The second fitting part is detachably fitted to the first fitting part. The fixing member protrudes from the back surface and is detachably assembled to the fixing part, wherein the distance between the fixing member and the bottom edge of the spring installation area is greater than the distance between the fixing part and the top abutting part of the wall fixing plate. The spiral spring is disposed in the spring installation area. The spiral spring includes an inner arc section, an outer arc section and an arc connecting section. The radius of the outer arc section is greater than that of the inner arc section. The arc connecting section is connected between the inner arc section and the outer arc section, and the radius of curvature of the arc connecting section gradually increases from the inner arc section to the outer arc section.

[0005] In summary, according to the wall-mounted device of the embodiment of the present invention, when assembling the wall-mounted member, it can be quickly assembled to the wall fixing plate through the fixing member and the second fitting part. After the fixing member is detached from the wall fixing plate, the wall-mounted member can be automatically moved relative to the wall fixing plate and released by the elastic force accumulated by the spiral spring, achieving the effects of easy and quick disassembly and assembly of the wall-mounted member. In addition, through the spiral structure of the spiral spring, the internal stress when the spiral spring is compressed can be more effectively dispersed, so as to increase the yield strength and service life of the spiral spring. Moreover, the spiral spring has a long actuation stroke and can provide a higher elastic force after being released. Therefore, even in a narrow space, it can be ensured that the elastic force and actuation stroke generated by the spiral spring are sufficient to drive the wall-mounted member to move from the fixed position to the release position. Brief Description of the Drawings

[0006] Figure 1 is a perspective view of an embodiment of the wall-mounted device of the present invention.

[0007] Figure 2 is an exploded perspective view of an embodiment of the wall-mounted device of the present invention.

[0008] Figure 3 is a partially enlarged exploded perspective view of an embodiment of the wall-mounted device of the present invention.

[0009] Figure 4 is a partially enlarged plan view of an embodiment of the wall-mounted device of the present invention.

[0010] Figure 5 is a cross-sectional view of the wall-mounted member of the present invention at a fixed position and along Figure 1 the line 5-5.

[0011] Figure 6 is a partially enlarged plan view of the wall-mounted member of the present invention at a fixed position.

[0012] Figure 7 is a cross-sectional view of the wall-mounted member of the present invention at a release position.

[0013] Figure 8 is a partially enlarged plan view of the wall-mounted member of the present invention at a release position.

[0014] The reference numerals are explained as follows:

[0015] 1: Wall-mounted device

[0016] 10: Wall fixing plate

[0017] 101: Lock hole

[0018] 11: Top

[0019] 12: Bottom

[0020] 13: Fixing part

[0021] 14: First fitting part

[0022] 15: Through hole

[0023] 16: Abutting part

[0024] 17: Side

[0025] 18: Front surface

[0026] 19: Rear surface

[0027] 20: Wall-mounted member

[0028] 21: Housing

[0029] 211: Top end

[0030] 212: Bottom end

[0031] 22: Back side

[0032] 221: Side flange

[0033] 23: Second fitting part

[0034] 24: Spring installation area

[0035] 25: Limiting part

[0036] 26: First limiting block

[0037] 261: First top edge

[0038] 262: First bottom edge

[0039] 27: Second limiting block

[0040] 271: Second top edge

[0041] 272: Second bottom edge

[0042] 28: Third limiting block

[0043] 29: Fixing part

[0044] 291: Elastic part

[0045] 292: Rod body

[0046] G: Notch

[0047] 30: Helical spring

[0048] 31: Inner arc segment

[0049] 311: Extension segment

[0050] 33: Outer arc segment

[0051] 331: End

[0052] 332: Connection end

[0053] 35: Arc connection segment

[0054] 351: First arc section

[0055] 352: Second arc section

[0056] L: Longitudinal center line

[0057] C: Center of circle

[0058] 40: Baffle

[0059] 41: Limiting column

[0060] W: Wall

[0061] A: Arrow

[0062] θ: Included angle Detailed implementation manners

[0063] The following presents various embodiments for detailed description. However, the embodiments are only used as examples for illustration and will not limit the scope of protection of the present invention. In addition, some components are omitted in the drawings of the embodiments to clearly show the technical features of the present invention. The same reference numerals will be used to represent the same or similar components in all the drawings.

[0064] Figure 1 It is a perspective view of an embodiment of the wall-mounted device of the present invention. Figure 2 It is an exploded perspective view of an embodiment of the wall-mounted device of the present invention. As Figure 1 and Figure 2 shown, the wall-mounted device 1 includes a wall fixing plate 10, a wall-mounted member 20, and a spiral spring 30. The wall fixing plate 10 is used to be fixed on the wall surface W. For example, in this embodiment, the wall fixing plate 10 is provided with two locking holes 101 to be fixed on the wall surface W by screws, but this is not limited. The wall fixing plate 10 can also be fixed on the wall surface W by other means (such as adhesion or riveting). In some embodiments, the above-mentioned wall surface W can refer to the wall surface, the ceiling surface, or the surfaces of other various articles.

[0065] As Figure 1 and Figure 2 shown, the wall fixing plate 10 includes a top portion 11, a bottom portion 12, a fixing portion 13, a first fitting portion 14, and an abutting portion 16. The fixing portion 13 and the abutting portion 16 are located between the top portion 11 and the bottom portion 12. In this embodiment, the fixing portion 13 is a through hole and is adjacent to the top portion 11, and the abutting portion 16 is adjacent to the bottom portion 12. Among them, the wall fixing plate 10 includes a through hole 15, and the through hole 15 is adjacent to the bottom portion 12 and penetrates through the opposite two surfaces of the wall fixing plate 10. The above-mentioned abutting portion 16 can be the edge of the through hole 15 for abutting against the spiral spring 30. As Figure 2 shown, the opposite two surfaces of the fixing plate 10 are a front surface 18 and a rear surface 19 respectively.

[0066] However, the above embodiments are only examples. In some embodiments, the fixing portion 13 of the wall fixing plate 10 can also be a hole groove and does not penetrate through the opposite two surfaces of the wall fixing plate 10, and the abutting portion 16 can also be a flange provided on the surface of the wall fixing plate 10.

[0067] As Figure 1 and Figure 2As shown, the wall-mounted component 20 can be any product with a wall-mounted requirement. For example, the wall-mounted component 20 can be a surveillance camera, a doorbell, a remote control, a charger, etc. The wall-mounted component 20 includes a housing 21 and a fixing member 29. The housing 21 has a back surface 22, and the back surface 22 is provided with a second fitting portion 23 and a spring mounting area 24. The housing 21 further has a top end 211 and a bottom end 212. The above-mentioned second fitting portion 23, spring mounting area 24 and fixing member 29 can be arranged at any position between the top end 211 and the bottom end 212. For example, in this embodiment, the second fitting portion 23 and the fixing member 29 are adjacent to the top end 211 and are respectively arranged corresponding to the positions of the first fitting portion 14 and the fixing portion 13, and the spring mounting area 24 is adjacent to the bottom end 212 and is arranged corresponding to the position of the abutting portion 16, but this is not intended to limit the present invention.

[0068] As Figure 2 shown, the fixing member 29 is arranged inside the housing 21 and protrudes from the back surface 22 in a telescopic manner. Please refer to Figure 5 shown. In this embodiment, the fixing member 29 includes an elastic member 291 and a rod body 292. The elastic member 291 is an elastic arm, but the elastic member 291 can also be a spring, a spring piece or an elastic rubber, and this is not limited. One end of the elastic member 291 is connected to other components inside the housing 21, and the other end of the elastic member 291 is connected to and abuts against the rod body 292 to protrude from the back surface 22 of the housing 21, so that the rod body 292 is in a state of being able to move telescopically under force. The spring mounting area 24 of the housing 21 is a partial area on the back surface 22 for the corresponding assembly of the scroll spring 30 (for example Figure 2 the area surrounded by the dotted chain line), and the spring mounting area 24 is provided with a limiting member 25 for the assembly and limitation of the scroll spring 30. Among them, the distance between the bottom edge of the fixing member 29 and the spring mounting area 24 (here, it refers to the distance along the Y-axis direction) is greater than the distance between the fixing portion 13 and the abutting portion 16 of the wall fixing plate 10 (here, it refers to the distance along the Y-axis direction).

[0069] Again, as Figure 2 shown, the second fitting portion 23 on the back surface 22 of the housing 21 is used to fit the first fitting portion 14 of the wall fixing plate 10. For example, the first fitting portion 14 and the second fitting portion 23 can be fitted to each other by means of clearance fit, interference fit or transition fit, etc. In this embodiment, the first fitting portion 14 is the edge of the top 11 of the wall fixing plate 10 (here, it is an arc-shaped edge), and the second fitting portion 23 is a snap flange provided on the back surface 22. Here, the second fitting portion 23 is an arc-shaped flange corresponding to the shape of the first fitting portion 14, so that the second fitting portion 23 can be used to fit the first fitting portion 14 of the wall fixing plate 10.

[0070] Figure 3A partially enlarged exploded perspective view of an embodiment of the wall-mounted device of the present invention. Figure 4 A partially enlarged plan view of an embodiment of the wall-mounted device of the present invention. As Figures 2 to 4 shown, the spiral spring 30 is wound in a spiral shape from the inside out by a wire. In some embodiments, the above-mentioned wire can be a flat wire or a plate-shaped wire, and the material of the wire can be carbon steel, alloy steel, stainless steel or other metal alloys, but it is not intended to limit the present invention.

[0071] As Figures 2 to 4 shown, the spiral spring 30 is disposed in the spring installation area 24 and includes an inner arc section 31, an outer arc section 33 and an arc connecting section 35. Among them, the inner arc section 31, the outer arc section 33 and the arc connecting section 35 can be located on the same plane, and the radius of the outer arc section 33 is greater than the radius of the inner arc section 31. For example, the radius of the outer arc section 33 is 1.5 to 2.5 times the radius of the inner arc section 31, and the arc connecting section 35 is connected between the inner arc section 31 and the outer arc section 33. Specifically, the inner arc section 31 is the initial section with the smallest radius of curvature of the spiral spring 30, the outer arc section 33 is the last section with the largest radius of curvature of the spiral spring 30, and the radius of curvature of the arc connecting section 35 gradually increases from the inner arc section 31 to the outer arc section 33, so that the spiral spring 30 forms a continuous spiral line segment (as Figure 4 shown).

[0072] The above Figure 4 The dotted lines drawn on the spiral spring 30 are used to clearly demarcate the boundaries of the inner arc section 31, the outer arc section 33 and the arc connecting section 35, but do not limit the arc lengths of the inner arc section 31, the outer arc section 33 and the arc connecting section 35 respectively. In some embodiments, the inner arc section 31 of the spiral spring 30 can be a circular arc, and the central angle of the inner arc section 31 can be between 45° and 210°. For example, in the Figure 4 embodiment, the central angle of the inner arc section 31 is about 180°, but this is not limited. In other embodiments, the inner arc section 31 can also be a non-circular arc shape with a gradually increasing radius of curvature. The outer arc section 33 of the spiral spring 30 can also be a circular arc, and the central angle of the outer arc section 33 can be between 45° and 180°. For example, in the Figure 4 embodiment, the central angle of the outer arc section 33 is about 75°, but this is not limited. In other embodiments, the outer arc section 33 can also be a non-circular arc shape with a gradually increasing radius of curvature.

[0073] As Figures 2 to 4As shown, the spiral spring 30 abuts against the limiting member 25 on the spring mounting area 24, where the limiting member 25 includes at least a block protruding from the back surface 22 and is located between the arc connecting section 35 and the inner arc section 31, so as to respectively provide abutting limits for the arc connecting section 35 and the inner arc section 31. In this embodiment, the limiting member 25 includes a first limiting block 26 and a second limiting block 27. The first limiting block 26 and the second limiting block 27 are arranged at intervals along the X-axis direction. The first limiting block 26 has a first top edge 261 and a first bottom edge 262. The first top edge 261 is closer to the top end 211 of the housing 21 than the first bottom edge 262. The second limiting block 27 has a second top edge 271 and a second bottom edge 272. The second top edge 271 is closer to the top end 211 of the housing 21 than the second bottom edge 272. And there is a notch G between the first limiting block 26 and the second limiting block 27. Here, the first limiting block 26 and the second limiting block 27 are arranged at intervals with each other to form the above-mentioned notch G.

[0074] Continuing from the above, as Figure 4 shown, the arc connecting section 35 of the spiral spring 30 abuts against the first top edge 261 and the second top edge 271, and the inner arc section 31 abuts against the first bottom edge 262. And the end of the inner arc section 31 has an extension section 311. The inner arc section 31 is connected between the extension section 311 and the arc connecting section 35. Here, the extension section 311 is integrally bent from the end of the inner arc section 31, and the extension section 311 penetrates into the notch G. Thus, by the arc connecting section 35 abutting against the first top edge 261 and the second top edge 271 and the inner arc section 31 abutting against the first bottom edge 262, the function of restricting the downward movement of the arc connecting section 35 and restricting the upward movement of the inner arc section 31 can be achieved, so that the spiral spring 30 is limited in the up and down directions. In addition, by the extension section 311 penetrating into the notch G, the spiral spring 30 can be limited in the left and right directions. The outer arc section 33 of the spiral spring 30 is not limited and is in a free state where it can be forced to move radially inward towards the inner arc section 31.

[0075] Again, as Figure 4As shown, the first bottom edge 262 of the above-mentioned first limiting block 26 can be an arc edge, and the radius of curvature of the first bottom edge 262 corresponds to the radius of curvature of the inner arc segment 31, so as to increase the abutting area between the inner arc segment 31 and the first bottom edge 262 to obtain a better limiting effect. The first top edge 261 of the first limiting block 26 and the second top edge 271 of the second limiting block 27 can be arc edges respectively. The arc connecting segment 35 includes a first arc section 351 and a second arc section 352. The radius of curvature of the first arc section 351 is greater than the radius of curvature of the second arc section 352. The first arc section 351 abuts against the first top edge 261, and the radius of curvature of the first top edge 261 corresponds to the radius of curvature of the first arc section 351. The second arc section 352 abuts against the second top edge 271, and the radius of curvature of the second top edge 271 corresponds to the radius of curvature of the second arc section 352, so as to increase the abutting area between the first arc section 351 and the first top edge 261 and the abutting area between the second arc section 352 and the second top edge 271 to obtain a better limiting effect.

[0076] Figure 5 is a cross-sectional view of the wall-mounted part of the present invention at a fixed position and along the Figure 1 5-5 line segment, Figure 6 is a partially enlarged plan view of the wall-mounted part of the present invention at a fixed position. As Figure 5 and Figure 6 shown, the wall-mounted part 20 can be assembled on the wall fixing plate 10 and located at a fixed position (such as Figure 5 the position shown). For example, during the assembly of the wall-mounted part 20 on the wall fixing plate 10, the spiral spring 30 can be correspondingly inserted into the through hole 15 of the wall fixing plate 10 (at this time, the spiral spring 30 does not abut against the abutting part 16), so that the second fitting part 23 of the housing 21 is located above the first fitting part 14 and the fixing part 29 abuts against the surface of the wall fixing plate 10 (such as Figure 7 shown). Then, the wall-mounted part 20 can move downward to the above-mentioned fixed position based on the action of gravity or the operation of the user, so that the fixing part 29 is snap-fitted into the fixing hole 13 and the second fitting part 23 is fitted into the first fitting part 14, thereby fixing the wall-mounted part 20 on the wall fixing plate 10 and hanging it on the wall surface.

[0077] In addition, as Figure 5 and Figure 6As shown, when the wall-mounted member 20 moves to the fixed position, the abutting portion 16 (i.e., the edge of the through hole 15) abuts against the outer arc section 33 of the spiral spring 30 and moves towards the inner arc section 31, and the spiral spring 30 is compressed and stores elastic force. In this embodiment, the outer arc section 33 is closer to the bottom end 212 of the housing 21 than the inner arc section 31. When the wall-mounted member 20 moves downward to the fixed position, the abutting portion 16 abuts against the outer arc section 33 of the spiral spring 30 and moves towards the top end 211 of the housing 21 (i.e., the Y-axis direction) and approaches the inner arc section 31. Therefore, the outer arc section 33 will be compressed towards the inner arc section 31, and the arc connecting section 35 and the inner arc section 31 will be elastically deformed to store elastic force. And when the outer arc section 33 of the spiral spring 30 is released, the elastic force stored in the spiral spring 30 can generate a force in the Y-axis direction. Thus, in the embodiment of the present invention, through the spiral structure and the actuation mode of the spiral spring 30, the internal stress when the spiral spring 30 is compressed can be dispersed. For example Figure 6 as shown, when the spiral spring 30 is compressed, multiple sections (such as Figure 6 the multiple sections filled with dot-dash lines in the figure) jointly bear the internal stress to improve the yield strength of the spiral spring 30, so that the spiral spring 30 is sufficient to bear the weight of the wall-mounted member 20 and avoid fatigue fracture, thereby improving the service life of the spiral spring 30.

[0078] Figure 7 is a cross-sectional view of the wall-mounted member of the present invention at the release position, Figure 8 is a partially enlarged plan view of the wall-mounted member of the present invention at the release position. As Figure 7 shown in Figure 8 and Figure 7 when the wall-mounted member 20 needs to be disassembled, the user can control the fixing member 29 to disengage from the fixing portion 13. For example, the user can drive the fixing member 29 to disengage from the fixing portion 13 by hand or drive the fixing member 29 to disengage from the fixing portion 13 via a hand tool. At this time, the elastic force stored in the above-mentioned spiral spring 30 can drive the wall-mounted member 20 to move along the Y-axis direction and towards the top 11 of the wall fixing plate 10 (as Figure 7 shown by the arrow A in the figure) to the release position (as

[0079] shown in Figure 2As shown, in this embodiment, the back side 22 of the shell 21 is further provided with two side flanges 221, and the two side flanges 221 are arranged at intervals from each other and connected to the second interlocking portion 23. The wall fixing plate 10 has two opposite side edges 17, and the two side edges 17 are connected between the top 11 and the bottom 12. In the process of the wall hanging part 20 moving between the above-mentioned fixed position and the release position, the wall fixing plate 10 can be between the two side flanges 221, and the two side edges 17 are close to or in contact with the two side flanges 221, so that the wall fixing plate 10 can be guided and limited by the two side flanges 221 during the movement to avoid displacement or shaking.

[0080] like Figure 4 As shown, the limiting member 25 further includes a third limiting block 28, the second limiting block 27 is located between the first limiting block 26 and the third limiting block 28, and a portion of the arc-shaped connecting segment 35 is located between the second limiting block 27 and the third limiting block 28. In this embodiment, the second arc segment 352 of the arc-shaped connecting segment 35 is connected between the first arc segment 351 and the inner arc segment 31, and a portion of the second arc segment 352 is located between the second limiting block 27 and the third limiting block 28. Therefore, please refer to Figure 4 and Figure 6 As shown, during the compression and release of the spiral spring 30 , the arc-shaped connecting section 35 can be restricted to move between the second limiting block 27 and the third limiting block 28 , thereby preventing the spiral spring 30 from deviating from the expected range of movement.

[0081] like Figures 3 to 5 As shown, the spring mounting area 24 on the back side 22 of the housing 21 is further provided with a baffle 40 and a limiting post 41 to limit the spiral spring 30 in the spring mounting area 24, wherein the limiting post 41 is connected between the baffle 40 and the housing 21. In this embodiment, one end of the limiting post 41 can be fixed to the housing 21 by means of adhesion, screw lock, or snap fastening, while the other end of the limiting post 41 is integrally connected to the baffle 40, so that the baffle 40 maintains a distance from the back side 22 of the housing 21. The inner arc segment 31 surrounds the limiting post 41, and the baffle 40 covers the spiral spring 30 to limit the axial displacement of the spiral spring 30, thereby preventing the spiral spring 30 from easily escaping from the spring mounting area 24.

[0082] For example Figure 5 As shown, when the wall hanging member 20 is in the fixed position, part of the wall fixing plate 10 further penetrates into the gap between the baffle 40 and the back surface 22, so that the wall hanging member 20 can be more stable and less likely to shake after being fixed to the wall fixing plate 10. Figure 7 As shown, when the wall hanging member 20 is in the release position, the baffle 40 is located within the through hole 15 of the wall fixing plate 10 , so that the spiral spring 30 , the baffle 40 and the limiting column 41 can be separated from the wall fixing plate 10 through the through hole 15 .

[0083] likeFigure 4 As shown in Figure 8 Figure 30 has a longitudinal center line L. The longitudinal center line C passes through the center C of the inner arc segment 31. The outer arc segment 33 has an end 331 and a connecting end 332. The connecting end 332 is connected to the arc connecting segment 35. The end 331 extends away from the connecting end 332, and the end 331 of the outer arc segment 33 is adjacent to the longitudinal center line L. The above-mentioned adjacency means that the angle θ between the line connecting the end 331 to the center C and the longitudinal center line L is between 0° and 45° or between 15° and 30°. In addition, in this embodiment, the connecting end 332 and the end 331 of the outer arc segment 33 are respectively located on opposite sides of the longitudinal center line L, so that when the wall-mounted member 20 is in the fixed position, it can be ensured that the abutting portion 16 abuts against the outer arc segment 33 of the spiral spring 30 and moves towards the inner arc segment 31. However, the above-mentioned embodiment is only an example. In some embodiments, the connecting end 332 and the end 331 of the outer arc segment 33 may also be located on the same side of the longitudinal center line L, or the end 331 of the outer arc segment 33 may be located on the longitudinal center line L.

[0084] In summary, according to the wall-mounted device of the embodiment of the present invention, when the wall-mounted member is assembled, it can be quickly assembled to the wall fixing plate through the fixing member and the second engaging portion. After the fixing member is separated from the wall fixing plate, the elastic force accumulated by the spiral spring can be used to drive the wall-mounted member to automatically move relative to the wall fixing plate to obtain release, achieving the effects of easy and quick disassembly and assembly of the wall-mounted member. In addition, through the spiral structure of the spiral spring, the internal stress when the spiral spring is compressed can be more effectively dispersed, so as to increase the yield strength and service life of the spiral spring. Moreover, the spiral spring has a long actuation stroke and can provide a higher elastic force after being released. Therefore, even in a narrow space, it can be ensured that the elastic force and actuation stroke generated by the spiral spring are sufficient to drive the wall-mounted member to move from the fixed position to the release position.

[0085] Although the technical content of the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes and modifications without departing from the spirit of the present invention, and all of them should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the appended patent application.

Claims

1. A wall-mounted device, characterized in that, Comprising: A wall fixing plate, including a fixing part, a abutting part and a first fitting part; A wall-mounted member, including a housing and a fixing member, the housing has a back surface, the back surface is provided with a spring mounting area and a second fitting part, the second fitting part is detachably fitted to the first fitting part, and the fixing member protrudes from the back surface and is detachably assembled to the fixing part; And A spiral spring, disposed in the spring mounting area, the spiral spring includes an inner arc section, an outer arc section and an arc connecting section, the radius of the outer arc section is greater than the radius of the inner arc section, the arc connecting section is connected between the inner arc section and the outer arc section, and the curvature radius of the arc connecting section gradually increases from the inner arc section towards the outer arc section; Wherein the distance between the fixing member and the bottom edge of the spring mounting area is greater than the distance between the fixing part and the abutting part of the wall fixing plate. When the wall-mounted member is assembled to the wall fixing plate, the abutting part abuts the outer arc section to move towards the inner arc section to accumulate elastic force.

2. The wall-mounted device according to claim 1, characterized in that, When the fixing member detaches from the fixing part, the elastic force drives the wall-mounted member to move relative to the wall fixing plate to a release position, and at the release position, the second fitting part detaches from the first fitting part.

3. The wall-mounted device according to claim 1, wherein The spring mounting area is provided with a limiting member, and the spiral spring abuts against the limiting member.

4. The wall-mounted device according to claim 3, wherein The limiting member includes a first limiting block and a second limiting block. The first limiting block has a first top edge and a first bottom edge, the second limiting block has a second top edge and a second bottom edge, and there is a notch between the first limiting block and the second limiting block. The arc connecting section of the spiral spring abuts against the first top edge and the second top edge, the inner arc section abuts against the first bottom edge, and the end of the inner arc section has an extension section, and the extension section penetrates into the notch.

5. The wall-mounted device according to claim 4, wherein, The first bottom edge is an arc-shaped edge, and the curvature radius of the first bottom edge corresponds to the curvature radius of the inner arc section.

6. The wall-mounted device according to claim 4, wherein The first top edge and the second top edge are respectively arc-shaped edges.

7. The wall-mounted device according to claim 6, characterized in that, The arc connecting section includes a first arc section and a second arc section. The curvature radius of the first arc section is greater than the curvature radius of the second arc section. The first arc section abuts against the first top edge, and the curvature radius of the first top edge corresponds to the curvature radius of the first arc section. The second arc section abuts against the second top edge, and the curvature radius of the second top edge corresponds to the curvature radius of the second arc section.

8. The wall-mounted device according to claim 4, wherein, The limiting member includes a third limiting block. The second limiting block is located between the first limiting block and the third limiting block, and a partial section of the arc connecting section is located between the second limiting block and the third limiting block.

9. The wall-mounted device according to claim 1, wherein The wall fixing plate includes a through hole, the spiral spring is located in the through hole, and the abutting part is the edge of the through hole.

10. The wall-mounted device according to claim 2, wherein The spring mounting area is further provided with a baffle and a limiting post. The limiting post is connected between the baffle and the housing, so that the baffle and the back surface maintain a distance. The inner arc section surrounds the limiting post, and the baffle covers the spiral spring.

11. The wall-mounted device according to claim 10, characterized in that, A part of the wall fixing plate further penetrates into the distance.

12. The wall-mounted device according to claim 1, wherein, The scroll spring has a longitudinal center line, and the longitudinal center line passes through the center of the inner arc segment, and the end of the outer arc segment is adjacent to the longitudinal center line.

13. The wall-mounted device according to claim 12, characterized in that, The outer arc segment has a connecting end for connecting to the arc connecting segment, and the connecting end and the end are respectively located on two opposite sides of the longitudinal center line.

14. The wall-mounted device according to claim 1, wherein The wall fixing plate includes a top and a bottom, the first fitting portion is the edge of the top, and the second fitting portion is a snap flange provided on the back surface.

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