Magnetic attraction support

Abstract

The utility model relates to a magnetic attraction support which comprises a magnetic attraction seat, a connecting arm, a first supporting arm and a second supporting arm which are sequentially and rotationally connected, the magnetic attraction seat, the connecting arm and the first supporting arm are rotationally connected to form an N-shaped folding structure, the magnetic attraction support can be unfolded and stored, and the magnetic attraction seat can achieve multi-angle rotating supporting through two-position rotating connection. The first supporting arm and the second supporting arm form a support capable of being unfolded and folded, and in the unfolded state, the first supporting arm and the second supporting arm are in an included angle posture to support the magnetic attraction base on the supporting face. And in the folding state, the first supporting arm and the second supporting arm are in a side-by-side closing posture to form a holding handle for a user to hold the magnetic bracket.

Description

TECHNICAL FIELD

[0001] The utility model relates to support manufacturing technical field, especially a kind of magnetic support. BACKGROUND

[0002] Nowadays, electronic devices (such as mobile phones, tablets) have become an indispensable tool in people's daily life. With the progress of wireless communication technology, electronic devices are also developing towards diversification, and the functions of electronic devices are becoming increasingly powerful. Today's electronic devices are not only used for telephone communication, but also can transmit image, sound and other information; And watching TV, movies or video calls with electronic devices are also very popular. In order to be able to support electronic devices on the desktop like a notebook computer, so that users can enjoy modern life more comfortably and conveniently, various manufacturers have launched a variety of electronic device support devices. For example: electronic device support, movable support on the back or both sides of electronic device, and electronic device can also be installed on other devices or supports through movable support, but some supports on the market have limited degrees of freedom, which cannot meet the multi-angle support requirements of electronic devices. SUMMARY

[0003] The utility model provides a kind of magnetic support that can meet multi-angle flexible support.

[0004] The utility model discloses a kind of magnetic support, comprising:

[0005] Magnetic seat;

[0006] Connecting arm, with opposite first end and second end, the first end is rotatably connected to the magnetic seat by first rotating shaft;

[0007] First support arm, with opposite third end and fourth end, the second end is rotatably connected between the third end and the fourth end by second rotating shaft, the second end can be turned around the second rotating shaft to the third end with the connecting arm is housed or the fourth end with the connecting arm is housed;

[0008] Second support arm, with opposite fifth end and sixth end, the fifth end is rotatably connected to the third end by third rotating shaft, the fifth end can be turned around the third rotating shaft to switch between the second support arm in unfolded state and housed state, when the second support arm is in unfolded state, the second support arm is connected with the first support arm at angle, the fourth end and the sixth end are opposite to be far away to support in support surface;When the second support arm is in housed state, the second support arm and the first support arm are in side by side posture;

[0009] The first rotation axis and the second rotation axis are parallel to each other and spaced along the length direction of the connecting arm, and the second rotation axis and the third rotation axis are parallel to each other and spaced along the length direction of the first supporting arm.

[0010] In one of the embodiments, the first supporting arm is provided with a receiving groove and a channel along the length direction of the first supporting arm in sequence, the second end is located in the channel, and the second rotation axis penetrates the second end and the inner side wall of the channel in sequence. The connecting arm can be flipped around the second rotation axis to be accommodated in the receiving groove.

[0011] In one of the embodiments, the edge of the magnetic seat is provided with two spaced lugs, the first rotation axis penetrates the lugs and the first end in sequence, and the end of the third end is provided with an avoiding gap communicated with the receiving groove. When the connecting arm is located in the receiving groove, the lugs, the first end and the first rotation axis are all located in the avoiding gap.

[0012] In one of the embodiments, the magnetic support includes a cold shoe joint provided on the second supporting arm. The cold shoe joint includes a cold shoe plate, a linkage rod and a knob. The cold shoe plate is threadedly connected to the knob through the linkage rod, and the linkage rod penetrates the second supporting arm along the thickness direction of the second supporting arm.

[0013] The second supporting arm has opposite first and second faces. The first face faces the first supporting arm, the knob is exposed and protrudes from the first face, and the cold shoe plate is exposed from the second face. By rotating the knob, the cold shoe plate can reciprocate along the thickness direction of the second supporting arm, so that the cold shoe plate can be retracted into the second face, and the cold shoe plate can also extend out of the second face and form a gap with the second face.

[0014] In one of the embodiments, the magnetic seat is provided with a first avoiding hole, and the first supporting arm is provided with a second avoiding hole at the fourth end. When the magnetic seat is rotated to be accommodated in the first supporting arm, and the second supporting arm is close to the first supporting arm side by side, the first avoiding hole and the second avoiding hole are aligned and both are penetrated by the knob.

[0015] In one of the embodiments, when the magnetic seat is rotated to be accommodated in the first supporting arm, and the second supporting arm is in a side-by-side state with the first supporting arm, the knob does not protrude from the magnetic surface of the magnetic seat.

[0016] In one of the embodiments, the second support arm is provided with a pair of dovetail slide rails along the opposite edges of the third rotation axis, the dovetail slide rails extend parallel to the length direction of the second support arm, and the dovetail slide rails are exposed for sliding and fastening the external device when the second support arm is in the unfolded state.

[0017] In one of the embodiments, the second surface is provided with a magnetic block for magnetically attracting the second support arm, and / or the cold shoe plate is provided with a threaded interface for externally connecting the second support arm in a threaded manner.

[0018] In one of the embodiments, the second surface is provided with a receiving groove, the cold shoe plate is embedded in the receiving groove when the cold shoe plate is retracted into the second surface, and the surface of the cold shoe plate away from the linkage rod is flush with the second surface.

[0019] In one of the embodiments, the fourth end is provided with a hook, and the hook is hung on the end surface of the sixth end when the second support arm and the first support arm are side by side and close to each other, or the sixth end is provided with the hook, and the hook is hung on the end surface of the fourth end when the second support arm and the first support arm are side by side and close to each other.

[0020] From the above technical solutions, the embodiments of the present application have at least the following advantages and positive effects:

[0021] The embodiments of the present application provide a magnetic support, which comprises a magnetic seat, a connecting arm, a first support arm and a second support arm connected in sequence, the magnetic seat, the connecting arm and the first support arm are rotationally connected to form an N-shaped folding structure, which can not only be unfolded and stored, but also can realize multi-angle rotation support through two rotation connections. The first support arm and the second support arm form an expandable and foldable support, in the unfolded state, the first support arm and the second support arm support the magnetic seat on the support surface in an angle posture, in the folded state, the first support arm and the second support arm form a holding handle in a side by side and close posture, which can be held by the user for use. The present application realizes multi-angle support and multi-form for the user through multiple rotation connections, realizes the multifunction and flexibility of the magnetic support, improves the practicability of the magnetic support, and meets the more use requirements of the user for the magnetic support. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings from the structures shown in the drawings without creating any creative labor.

[0023] Figure 1 Fig. 1 is a schematic diagram of the overall structure of a magnetic support in a fully folded state according to an embodiment of the present application;

[0024] Figure 2 Fig. 2 is a schematic diagram of the overall structure of the magnetic support in a seat body supporting state according to the embodiment of the present application; Figure 1

[0025] Figure 3 Fig. 3 is a schematic diagram of the overall structure of the magnetic support in a handle holding state according to the embodiment of the present application; Figure 1

[0026] Figure 4 Fig. 4 is a schematic diagram of the overall structure of the magnetic support in a support supporting state according to the embodiment of the present application; Figure 1

[0027] Figure 5 Fig. 5 is a schematic diagram of the exploded structure of the magnetic support according to the embodiment of the present application; Figure 1

[0028] Figure 6 Fig. 6 is a schematic diagram of the structure of the magnetic support according to the embodiment of the present application from another perspective; Figure 1

[0029] Figure 7 Fig. 7 is a schematic diagram of the cross-sectional structure of the magnetic support according to the embodiment of the present application along the direction of A-A in Fig. 6; Figure 6

[0030] Figure 8 Fig. 8 is a schematic diagram of the cross-sectional structure of the magnetic support according to the embodiment of the present application along the direction of B-B in Fig. 6; Figure 6

[0031] Figure 9 Fig. 9 is a schematic diagram of the structure of the cold shoe plate in a hidden state according to the embodiment of the present application; Figure 6

[0032] Figure 10 Fig. 10 is a schematic diagram of the structure of the cold shoe plate in an extended state according to the embodiment of the present application; Figure 6

[0033] Figure 11 Fig. 11 is a schematic diagram of the structure of the magnetic support according to the embodiment of the present application from another perspective. Figure 10

[0034] The following is a description of the reference signs:

[0035] 10, magnetic support;

[0036] 100, magnetic seat; 110, annular seat body; 111, annular receiving groove; 120, annular magnet; 130, annular gasket; 140, lug; 150, first avoidance hole;

[0037] 200, connecting arm; 210, first end; 220, second end;

[0038] ​​​​​​​​​​300, first support arm; 310, third end; 311, avoiding gap; 320, fourth end; 321, hook; 322, buffer pad; 330, channel; 340, accommodating groove; 341, limiting groove; 342, second avoiding hole;

[0039] 400, second support arm; 410, fifth end; 420, sixth end; 430, first surface; 440, second surface; 441, magnetic block; 442, protection pad; 443, accommodating groove; 450, dovetail slide rail;

[0040] 500, rotating assembly; 510, first rotating shaft; 520, second rotating shaft; 530, third rotating shaft;

[0041] 600, cold shoe joint; 610, cold shoe plate; 611, threaded interface; 620, linkage rod; 630, knob piece. DETAILED DESCRIPTION

[0042] The typical embodiments embodying the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can have various changes in different embodiments, which do not deviate from the scope of the present application, and the description and drawings in the essence are used as description, not to limit the present application.

[0043] In addition, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0044] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] Combination reference Figures 1-4 The present application provides a novel magnetic support 10, which is folded and stored through multiple rotating connections and is adjusted at multiple angles. Figure 1 It is shown that the magnetic support 10 is in a completely folded state, each component is stacked and coincides, the thickness is thin, the volume is miniaturized, and it is convenient to store and carry. Figures 2-4The schematic respectively shows different degrees of unfolding state of the magnetic suction support 10. According to the different degrees of unfolding, the magnetic suction support 10 changes into different support mode postures, Figure 2 The schematic shows the posture of the magnetic suction support 10 in the seat support state, Figure 3 The schematic shows the posture of the magnetic suction support 10 in the handle holding state, Figure 4 The schematic shows the posture of the magnetic suction support 10 in the support support state. It should be noted that the three support states listed above are common device support modes. The support state of the magnetic suction support 10 of the present application includes but is not limited to the seat support, handle holding and support support three modes. According to the adjustment of the magnetic suction support 10, more support states can be flexibly changed to adapt to more support scenarios. Users can use the magnetic suction support as a vehicle-mounted support, a selfie stick, a support frame, etc.

[0046] In combination with reference Figures 1-4 The magnetic suction support 10 includes a magnetic suction seat 100, a connecting arm 200, a first support arm 300 and a second support arm 400. The magnetic suction seat 100 is used for attaching and mounting the external device with a magnetic surface. The connecting arm 200 has opposite first and second ends 210 and 220. The first end 210 is rotatably connected to the magnetic suction seat 100 through a first rotating shaft 510. The first support arm 300 has opposite third and fourth ends 310 and 320. The second end 220 is rotatably connected between the third and fourth ends 310 and 320 through a second rotating shaft 520. The second end 220 can be flipped to fold and store the connecting arm 200 in the third or fourth end 310 or 320 of the first support arm 300. The second support arm 400 has opposite fifth and sixth ends 410 and 420. The fifth end 410 is rotatably connected to the third end 310 through a third rotating shaft 530. The fifth end 410 can be flipped to switch the second support arm 400 between the unfolded state and the stored state. Figure 4 The schematic shows that the second support arm 400 is in the unfolded state, i.e., the magnetic suction support 10 is in the support state of the footrest. The second support arm 400 is connected at an angle with the first support arm 300. The fourth end 320 and the sixth end 420 are opposite and far away to support on the support surface. Figures 1-3 The schematic shows that the second support arm 400 is in the stored state. The second support arm 400 is side by side with the first support arm 300. Figure 3 The schematic shows that the second support arm 400 is side by side with the first support arm 300 to form a handle shape for the user to hold.

[0047] The first rotating shaft 510, the second rotating shaft 520 and the third rotating shaft 530 can be collectively referred to as rotating assemblies of the magnetic support 10. The first rotating shaft 510 and the second rotating shaft 520 are spaced apart and parallel to each other along the length extension direction of the connecting arm 200, and the second rotating shaft 520 and the third rotating shaft 530 are spaced apart and parallel to each other along the length extension direction of the first supporting arm 300. The three rotating shafts are parallel to each other in space, so that the magnetic support 10 can be folded and stored and multi-angle adjustment and support can be achieved.

[0048] The magnetic support 10 provided by the present application can be transformed into various forms for use by a user through the rotation connection of the first rotating shaft 510, the second rotating shaft 520 and the third rotating shaft 530 which are parallel to each other at multiple positions, so that the multifunction and flexibility of the magnetic support 10 are realized, and the practicality of the magnetic support 10 is improved to meet more use requirements of the user.

[0049] Preferably, in combination with reference to Figures 5-7 In an embodiment, the magnetic seat 100 includes a ring-shaped seat body 110, a ring-shaped magnet 120 and a ring-shaped gasket 130. The ring-shaped seat body 110 is provided with a ring-shaped receiving groove 111, the ring-shaped magnet 120 is received in the ring-shaped receiving groove 111, and the ring-shaped gasket 130 covers the ring-shaped receiving groove 111. Here, the ring-shaped magnet 120 magnetically attracts the electronic device to make the magnetic attraction force of the electronic device more balanced and stable, and the ring-shaped receiving groove 111 and the ring-shaped gasket 130 are used to protect the ring-shaped magnet 120 from being eroded by the external environment and directly contacted with the electronic device to cause abrasion. Preferably, in combination with reference to Figure 4 and Figure 5 In an embodiment, the first supporting arm 300 is provided with a channel 330 and a receiving groove 340 which are sequentially communicated along the length direction of the first supporting arm 300. The second end 220 is limited in the channel 330, and the second rotating shaft 520 sequentially penetrates the second end 220 and the inner side wall of the channel 330 to realize the rotating connection of the second end 220 to the first supporting arm 300, and the connecting arm 200 can be flipped around the second rotating shaft 520 to be stored in the receiving groove 340. It should be noted that the channel 330 is located between the third end 310 and the fourth end 320, and the width of the channel 330 is smaller than the width of the second end 220. The second rotating shaft 520 sequentially penetrates the receiving groove 340, which can be one and located at one of the third end 310 and the fourth end 320, or two and located at the third end 310 and the fourth end 320 respectively. Therefore, in the present application, the channel 330 and any means that can realize the rotating connection of the second end 220 to the first supporting arm 300 should be protected.

[0050] Preferably, in combination with reference to Figure 5 and Figure 8In an embodiment, the edge of the magnetic base 100 is provided with two spaced-apart lugs 140, and the first rotating shaft 510 is sequentially threaded through the lugs 140 and the first end 210, so that the magnetic base 100 is rotationally connected to the first end 210. The accommodating groove 340 includes a limiting groove 341 provided on the third end 310, and the third end 310 is provided with an avoiding gap 311 in communication with the limiting groove 341. When the connecting arm 200 is flipped and limited in the limiting groove 341, the lugs 140, the first end 210 and the first rotating shaft 510 are all limited in the avoiding gap 311. It should be noted that, in the present application, whether the lugs 140 and the avoiding gap 311 are provided or not is not limited, as long as the method of rotationally connecting the magnetic base 100 to the first end 210 is protected.

[0051] Preferably, in combination with reference to Figure 5 、 Figure 9 and Figure 10 , the magnetic support 10 includes a cold shoe joint 600 threaded through the second support arm 400, the cold shoe joint 600 is provided between the fifth end 410 and the sixth end 420 and includes a connected cold shoe plate 610, a linkage rod 620 and a knob piece 630, the cold shoe plate 610 is threadedly connected to the knob piece 630 through the linkage rod 620, and the linkage rod 620 penetrates through the second support arm 400 along the thickness direction of the second support arm 400. The second support arm 400 has opposite first and second faces 430 and 440 along the thickness direction thereof, the first face 430 faces the first support arm 300, and the knob piece 630 protrudes out of the first face 430; the second face 440 is away from the first support arm 300, and the cold shoe plate 610 is exposed to the second face 440. Rotating the knob piece 630, the cold shoe plate 610 can reciprocate along the thickness direction of the second support arm 400, so that the cold shoe plate 610 can be retracted into the second face 440 (as shown in Figure 9 ), and the cold shoe plate 610 can also extend out of the second face 440 and form a gap between the second face 440 (as shown in Figure 10 ), and the extended cold shoe plate 610 is used for cold shoe external connection. It should be noted that the cold shoe joint 600 is provided to expand the external interface of the magnetic support 10, and in the present application, whether the cold shoe joint 600 is provided or not is not limited.

[0052] Preferably, in combination with reference to Figure 5 and Figure 7, the first support arm 300 is provided with a second avoiding hole 342 at the fourth end 320. When the magnetic seat 100 is received in the first support arm 300 and the first support arm 300 and the second support arm 400 are close to each other side by side, that is, the entire magnetic support 10 is in a fully received state, the first avoiding hole 150 and the second avoiding hole 342 are in communication and are both penetrated by the knob 630. Further, the knob 630 does not protrude from the magnetic surface of the magnetic seat 100. Such a design makes the structure of the entire magnetic support 10 more compact, the thickness more light and thin, and the volume smaller. Here, in combination with Figure 4 The second avoiding hole 342 can also be part of the accommodating groove 340, and the connecting arm 200 can be flipped to be limited in the second avoiding hole 342. It should be noted that, without considering the thickness and volume of the magnetic support 10, whether the first avoiding hole 150 or the second avoiding hole 342 is provided is not limited, and whether the knob 630 protrudes from the magnetic surface of the magnetic seat 100 is also not limited.

[0053] Preferably, in combination with Figure 11 In an embodiment, the second support arm 400 is provided with a pair of dovetail slide rails 450 on opposite sides along the axial direction of the third rotating shaft 530, and the dovetail slide rails 450 extend parallel to the length extension direction of the second support arm 400. When the second support arm 400 is in an unfolded state, the dovetail slide rails 450 are exposed and used for sliding fast-mounting external device accessories. Here, the provision of the dovetail slide rails 450 makes the second support arm 400 have the functions of fast-mounting and supporting, realizes one thing with multiple uses, and embodies the multifunctionalization of the magnetic support 10.

[0054] Preferably, in combination with Figure 5 and Figure 7 In an embodiment, the second surface 440 is embedded with magnetic blocks 441 for the second support arm 400 to magnetically attract external device accessories, and the side away from the second surface 440 of the magnetic blocks 441 is covered with a protective pad 442 to isolate the external environment and protect the magnetic surface. It should be noted that, here, the number and arrangement of the magnetic blocks 441 are not limited, and whether the protective pad 442 is provided is also not limited. The cold shoe plate 610 is provided with a threaded interface 611 for the second support arm 400 to threadedly connect external device accessories. The magnetic blocks 441 and the protective pad 442 do not protrude from the first surface, embodying the compactness of the structure of the second support arm 400, and having multiple external interfaces, further embodying the multifunctionalization of the magnetic support 10.

[0055] It should be noted that the provision of the dovetail slide rails 450, the magnetic blocks 441, and the threaded interface 611 is all for expanding the external interfaces of the magnetic support 10 and enhancing the multifunctionalization of the magnetic support 10. In this application, whether the dovetail slide rails 450, the magnetic blocks 441, or the threaded interface 611 is provided is not limited.

[0056] Preferably, referring to Figure 9 In an embodiment, the second surface 440 is provided with a receiving groove 443, when the cold shoe plate 610 is retracted into the second surface 440, the cold shoe plate 610 is fitted into the receiving groove 443, and the side of the cold shoe plate 610 away from the linkage rod 620 is flush with the second surface 440, improving the assembly compactness between the cold shoe joint 600 and the second support arm 400. It should be noted that, without considering the assembly compactness, in the present application, whether the receiving groove 443 is provided or not is not limited.

[0057] Preferably, referring to Figure 5 and Figure 7 In an embodiment, the fourth end 320 of the first support arm 300 is provided with a hook 321, when the second support arm 400 and the first support arm 300 are in a side-by-side close-up posture, the hook 321 is hung on the end face of the sixth end 420, so as to maintain the posture of the second support arm 400 and the first support arm 300 being stably side by side. It should be noted that, in other embodiments, the hook 321 can also be provided at the sixth end 420, when the second support arm 400 and the first support arm 300 are in a side-by-side close-up posture, the hook 321 is hung on the end face of the fourth end 320, which can also maintain the posture of the second support arm 400 and the first support arm 300 being stably side by side. Here, at least one of the inner side of the hook 321 or the end face of the sixth end 420 is provided with a contour-shaped buffer pad 322, so as to prevent the contact friction and wear between the inner side of the hook 321 and the end face of the sixth end 420, or the end face of the fourth end 320. It should be understood that, without considering the stability of the second support arm 400 and the first support arm 300 being side by side, whether the hook 321 and the buffer pad 322 are provided or not is not limited.

[0058] Although the present application has been described with reference to several exemplary embodiments, it is understood that the terms used are terms of description and illustration and not of limitation. Since the present application can be embodied in various forms without departing from the spirit or essential characteristics thereof, it is understood that the aforementioned embodiments are not limited to any particular details thereof but are understood to include all the fallen within the scope of the appended claims as well as equivalents thereof. Therefore, all changes and modifications that come within the spirit and scope of the claims or the following claims are desired to be protected.

Claims

1. A magnetic holder, characterized in that, include: Magnetic base; The connecting arm has a first end and a second end, the first end being rotatably connected to the magnetic base via a first rotating shaft; The first support arm has a third end and a fourth end opposite to each other. The second end is rotatably connected between the third end and the fourth end through a second pivot. The second end can be flipped around the second pivot so that the connecting arm is stored in the third end or the connecting arm is stored in the fourth end. The second support arm has a fifth end and a sixth end, the fifth end being rotatably connected to the third end via a third pivot. The fifth end can rotate around the third pivot, allowing the second support arm to switch between an extended state and a retracted state. When the second support arm is in the extended state, it is connected to the first support arm at an angle, and the fourth end is relatively far from the sixth end to support the support surface. When the second support arm is in the retracted state, it is positioned side-by-side with the first support arm. The first rotating shaft and the second rotating shaft are spaced apart and parallel to each other along the length of the connecting arm, and the second rotating shaft and the third rotating shaft are spaced apart and parallel to each other along the length of the first supporting arm.

2. The magnetic holder according to claim 1, characterized in that, The first support arm has a receiving groove and a channel connected in sequence along its length direction. The second end is limited to the channel. The second rotating shaft passes through the second end and the inner sidewall of the channel in sequence. The connecting arm can be rotated around the second rotating shaft to be stored in the receiving groove.

3. The magnetic holder according to claim 2, characterized in that, The magnetic base has two spaced lugs protruding from its edge. The first rotating shaft passes through the lugs and the first end in sequence. The end of the third end has a clearance notch that communicates with the receiving groove. When the connecting arm is confined within the receiving groove, the lugs, the first end, and the first rotating shaft are all confined within the clearance notch.

4. The magnetic holder according to claim 1, characterized in that, The magnetic bracket includes a cold shoe connector disposed on the second support arm. The cold shoe connector includes a connected cold shoe plate, a linkage rod and a knob. The cold shoe plate is threaded to the knob through the linkage rod. The linkage rod passes through the second support arm along the thickness direction of the second support arm. The second support arm has a first surface and a second surface facing each other. The first surface faces the first support arm. The knob protrudes from the first surface, and the cold shoe plate protrudes from the second surface. When the knob is rotated, the cold shoe plate can reciprocate along the thickness direction of the second support arm, so that the cold shoe plate can retract into the second surface, and the cold shoe plate can also extend out of the second surface and form a gap with the second surface.

5. The magnetic holder according to claim 4, characterized in that, The magnetic base is provided with a first clearance hole, and the first support arm is provided with a second clearance hole at the fourth end. When the magnetic base is rotated to be housed in the first support arm, and the second support arm is placed side by side with the first support arm, the first clearance hole and the second clearance hole are aligned and both are passed through by the knob.

6. The magnetic holder according to claim 5, characterized in that, When the magnetic base is rotated to be housed in the first support arm, and the second support arm is in a parallel position with the first support arm, the knob does not protrude from the magnetic surface of the magnetic base.

7. The magnetic holder according to claim 4, characterized in that, The second support arm is provided with a pair of dovetail slide rails on opposite sides along the axial direction of the third rotating shaft. The dovetail slide rails are parallel to the length extension direction of the second support arm. When the second support arm is in the unfolded state, the dovetail slide rails are exposed for sliding quick-connect external equipment.

8. The magnetic holder according to claim 4, characterized in that, The second surface is provided with a magnetic block for the second support arm to be magnetically attached externally; and / or, the cold shoe plate is provided with a threaded interface for the second support arm to be threaded externally attached.

9. The magnetic holder according to claim 4, characterized in that, The second surface has a storage groove. When the cold shoe plate is retracted into the second surface, the cold shoe plate is fitted into the storage groove, and the side of the cold shoe plate away from the linkage rod is flush with the second surface.

10. The magnetic holder according to claim 1, characterized in that, The fourth end is provided with a hook, which is attached to the end face of the sixth end when the second support arm and the first support arm are side by side; or, the sixth end is provided with the hook, which is attached to the end face of the fourth end when the second support arm and the first support arm are side by side.

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