Concealed handle and door body

Abstract

The utility model relates to handle technical field discloses a kind of hidden handle and door body, comprising: shell, first side is equipped with installation cavity;Cover, it is movably set in the second side of shell, and switch between first position and second position, under first position, cover extends to shell outside;Under second position, cover is withdrawn to abut with shell;First connecting rod assembly, first end rotation is set in installation cavity, second end penetrates shell and is rotationally connected with cover;Electric drive device, it is set in installation cavity, and it is connected with the first end of first connecting rod assembly, for driving first connecting rod assembly rotation. Cover is switched between first position and second position by electric drive device driving first connecting rod assembly rotation, to realize the automatic extension or automatic withdrawal of cover. Thus cover extends and can act as handle when using, after use, cover is withdrawn, need not occupy extra space, avoid to happen to knock, improve overall aesthetic property and use convenience.

Description

Technical Field

[0001] This utility model relates to the field of handle technology, specifically to a concealed handle and door body. Background Technology

[0002] Doors are widely used in various scenarios, such as entrance doors, interior doors, and cabinet doors. Doors are usually designed with handles for easy operation. Currently, most handles are protruding and fixed to the door surface.

[0003] However, this design takes up extra space after installation, affecting the overall aesthetics and making it prone to bumps and knocks, causing inconvenience to users. Utility Model Content

[0004] This utility model provides a concealed handle and door body to solve or improve the problems in related technologies where handles occupy extra space after installation, affect the overall aesthetics, and are prone to bumping and knocking, causing inconvenience to users.

[0005] Firstly, this utility model provides a concealed handle, comprising:

[0006] The housing has a mounting cavity on its first side;

[0007] A cover is movably disposed on the second side of the housing, and the cover can switch between a first position and a second position. In the first position, the cover extends outside the housing; in the second position, the cover retracts to abut against the housing.

[0008] The first connecting rod assembly has a first end rotatably disposed in the mounting cavity, and a second end penetrating the housing and rotatably connected to the cover.

[0009] An electric drive device is disposed within the mounting cavity and connected to the first end of the first linkage assembly. The electric drive device is used to drive the first linkage assembly to rotate, thereby causing the cover to switch between the first position and the second position.

[0010] In one optional embodiment, the electric drive device includes:

[0011] A geared motor, the output end of which is connected to the first connecting rod assembly via a transmission mechanism, is used to drive the first connecting rod assembly to rotate.

[0012] A circuit board is electrically connected to the geared motor, and the circuit board is used to control the geared motor.

[0013] In one alternative implementation, the first link assembly includes:

[0014] A connecting rod shaft extends along a first direction and is rotatably disposed within the mounting cavity;

[0015] A first link and a second link are spaced apart along the first direction. The first ends of the first link and the second link are both connected to the link shaft and rotate synchronously. The second ends of the first link and the second link both pass through the housing and are rotatably connected to the cover. The first end of the first link is connected to the geared motor through the transmission mechanism.

[0016] In one optional embodiment, the transmission mechanism includes:

[0017] The drive wheel is located at the output end of the geared motor and rotates synchronously with the geared motor;

[0018] The driven wheel assembly has a toothed portion at the first end of the first connecting rod. One end of the driven wheel assembly meshes with the driving wheel, and the other end meshes with the toothed portion.

[0019] In one alternative implementation, the driven wheel assembly includes:

[0020] The first driven wheel meshes with the driving wheel;

[0021] The second driven wheel meshes with the teeth;

[0022] The drive shaft is rotatably disposed within the mounting cavity, and both the first driven wheel and the second driven wheel are connected to the drive shaft and rotate synchronously.

[0023] In one alternative implementation, it further includes:

[0024] A limiting plate is disposed within the mounting cavity, and the limiting plate is located on the side of the connecting rod shaft opposite to the cover.

[0025] And / or a protective cover, disposed within the mounting cavity, and the protective cover covering the side of the transmission mechanism opposite to the cover body.

[0026] In one alternative implementation, it further includes:

[0027] The second link assembly is disposed below the first link assembly. The second link assembly includes a pair of third links spaced apart along a first direction. The first end of the third link is rotatably disposed in the mounting cavity, and the second end passes through the housing and is rotatably connected to the cover.

[0028] And / or, the cover has a recess on the side facing the housing, and in the second position, there is a gap between the recess and the housing.

[0029] In one alternative implementation, it further includes:

[0030] A first position switch is electrically connected to the circuit board and is disposed in the mounting cavity. The first end of the second connecting rod is provided with a cam portion. The cam portion is adapted to trigger the first position switch when the cover is in the first position. The circuit board is adapted to control the reduction motor to stop working according to the signal of the first position switch.

[0031] In one alternative implementation, it further includes:

[0032] The second position switch is electrically connected to the circuit board. The second position switch is disposed in the mounting cavity, and the housing is provided with a clearance opening. The second position switch passes through the clearance opening. The cover is provided with a protrusion on the side facing the housing. The protrusion is adapted to trigger the second position switch when the cover is in the second position. The circuit board is adapted to control the reduction motor to stop working according to the signal of the second position switch.

[0033] Secondly, this utility model also provides a door body, including a concealed handle as described in any of the above claims.

[0034] The concealed handle provided by this utility model uses an electric drive device to drive the first linkage assembly to rotate, thereby switching the cover between a first position and a second position, thus achieving automatic extension or retraction of the cover. In this way, the cover extends to act as a handle during use, and retracts after use, without occupying extra space, avoiding bumps and knocks, and improving overall aesthetics and ease of use. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is an exploded view of the concealed handle according to an embodiment of the present utility model;

[0037] Figure 2 This is one of the structural schematic diagrams of the concealed handle in the first position according to an embodiment of the present utility model;

[0038] Figure 3 This is a second schematic diagram of the concealed handle in the first position according to an embodiment of the present utility model;

[0039] Figure 4 This is a schematic diagram of the concealed handle in the second position according to an embodiment of the present utility model;

[0040] Figure 5 This is a schematic diagram of the structure of the first link assembly according to an embodiment of the present utility model;

[0041] Figure 6 This is a schematic diagram of the circuit board structure according to an embodiment of the present invention;

[0042] Figure 7 This is a schematic diagram of the structure of the first side of the housing according to an embodiment of the present invention;

[0043] Figure 8 This is a schematic diagram of the structure of the second side of the housing in an embodiment of the present invention;

[0044] Figure 9 This is a schematic diagram of the structure of the cover body according to an embodiment of the present utility model;

[0045] Figure 10 This is a schematic diagram of the structure of the protective cover according to an embodiment of the present utility model.

[0046] Explanation of reference numerals in the attached figures:

[0047] 1. Housing; 101. First side; 102. Second side; 103. Mounting cavity; 104. Clearance opening; 105. Lock cylinder hole; 106. Motor mounting part; 107. Connecting rod shaft mounting part; 108. Drive shaft mounting part; 109. Limiting plate mounting hole; 110. Protective cover mounting hole; 111. Circuit board mounting hole; 112. Connecting rod receiving groove; 2. Cover body; 201. Recessed part; 202. Protruding part; 203. Connecting rod support; 204. Lock cylinder clearance area; 205. 1. Linkage clearance area; 2. Gear motor; 3. Circuit board; 4. Linkage shaft; 5. First link; 601. Gear; 7. Second link; 701. Cam; 8. Drive wheel; 9. First driven wheel; 10. Second driven wheel; 11. Drive shaft; 12. Limit plate; 13. Protective cover; 14. Third link; 15. Clearance; 16. First position switch; 17. Second position switch; 18. Motor bushing; 19. Linkage bushing; 20. Drive shaft bushing; 21. Motor wire socket. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0049] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] The following is combined Figures 1 to 10 This describes a concealed handle and door body according to an embodiment of the present utility model.

[0053] According to an embodiment of this utility model, a concealed handle is provided, including a housing 1, a cover 2, a first linkage assembly, and an electric drive device. Specifically, as... Figure 1As shown, a mounting cavity 103 is provided on the first side 101 of the housing 1. The cover 2 is movably disposed on the second side 102 of the housing 1, and the cover 2 can switch between a first position and a second position. Figure 2 As shown, when the cover 2 is in the first position, the cover 2 extends outside the housing 1; as Figure 4 As shown, when the cover 2 is in the second position, the cover 2 retracts to abut against the housing 1. The first end of the first linkage assembly is rotatably disposed within the mounting cavity 103, and the second end of the first linkage assembly penetrates the housing 1 and is rotatably connected to the cover 2. An electric drive device is disposed within the mounting cavity 103 and is connected to the first end of the first linkage assembly. The electric drive device drives the first linkage assembly to rotate, thereby causing the cover 2 to switch between the first and second positions. Furthermore, as... Figure 8 As shown, the housing 1 also has a lock cylinder hole 105, and the lock cylinder is installed in the lock cylinder hole 105 to facilitate the installation of the lock cylinder. Mechanical unlocking or emergency unlocking can be performed by opening the cover 2. Figure 9 As shown, the cover 2 is provided with a lock cylinder clearance area 204 opposite to the lock cylinder hole 105 to ensure that the cover 2 can reliably fit with the housing 1 when it is retracted.

[0054] With this configuration, the first linkage assembly is rotated via an electric drive device, causing the cover 2 to switch between a first position and a second position, thereby achieving automatic extension or retraction of the cover 2. In this way, the cover 2 can extend to act as a handle during use, and can be retracted after use, without occupying extra space, avoiding bumps and knocks, and improving overall aesthetics and ease of use.

[0055] Optionally, in some embodiments of this utility model, the electric drive device includes a geared motor 3 and a circuit board 4. For example... Figure 2 As shown, the output end of the geared motor 3 is connected to the first connecting rod assembly via a transmission mechanism, and the geared motor 3 is used to drive the first connecting rod assembly to rotate. The circuit board 4 is electrically connected to the geared motor 3, and the circuit board 4 is used to control the geared motor 3. Optionally, the circuit board 4 can be a printed circuit board, such as... Figure 6 As shown, the cable of the geared motor 3 is electrically connected to the circuit board 4 via the motor cable socket 21. With this configuration, the geared motor 3 drives the first linkage assembly to swing, thereby extending or retracting the cover 2. Furthermore, the circuit board 4 controls the operating state of the geared motor 3, enabling intelligent control of the concealed handle and automatic extension and retraction of the cover 2, thus improving product intelligence and enhancing the user experience. In addition, the circuit board 4 also provides overcurrent protection for the geared motor 3, ensuring its reliable operation.

[0056] Optionally, in some embodiments of this utility model, the first link assembly includes a link shaft 5, a first link 6, and a second link 7. For example... Figure 5As shown, the connecting rod shaft 5 extends along the first direction and is rotatably disposed within the mounting cavity 103. Specifically, as... Figure 7 As shown, the mounting cavity 103 is provided with a connecting rod shaft mounting part 107 adapted to the connecting rod shaft 5. Both ends of the connecting rod shaft 5 are rotatably mounted on the connecting rod shaft mounting part 107 via connecting rod shaft sleeves 19. A first connecting rod 6 and a second connecting rod 7 are spaced apart along a first direction. The first end of the first connecting rod 6 is connected to the connecting rod shaft 5 and rotates synchronously. The second end of the first connecting rod 6 passes through the housing 1 and is rotatably connected to the cover 2. The first end of the first connecting rod 6 is connected to the reduction motor 3 via a transmission mechanism. The first end of the second connecting rod 7 is connected to the connecting rod shaft 5 and rotates synchronously. The second end of the second connecting rod 7 passes through the housing 1 and is rotatably connected to the cover 2. For example, the connecting rod and the connecting rod shaft 5 are connected via a flat shaft structure. The housing 1 is provided with a connecting rod receiving groove 112 for accommodating the connecting rod. The connecting rod passes through the connecting rod receiving groove 112 and is hinged to the cover 2 via a rotating shaft. Furthermore, as... Figure 9 As shown, a connecting rod avoidance area 205 is provided on the side of the cover 2 facing the housing 1 to prevent interference between the cover 2 and the connecting rod when the cover 2 is retracted. With this configuration, the geared motor 3 drives the first connecting rod 6 to rotate, and the first connecting rod 6 drives the connecting rod shaft 5 and the second connecting rod 7 to rotate together, thereby causing the cover 2 to swing relative to the housing 1, realizing the extension and retraction of the cover 2. At the same time, connecting rods are arranged on both sides of the cover 2 to ensure the smooth movement of the cover 2.

[0057] Optionally, in some embodiments of this utility model, the transmission mechanism includes a driving wheel 8 and a driven wheel assembly. For example... Figure 2 As shown, the driving wheel 8 is located at the output end of the geared motor 3, and the driving wheel 8 rotates synchronously with the geared motor 3. Specifically, as... Figure 7 As shown, the mounting cavity 103 is provided with a motor mounting part 106 adapted to the geared motor 3. The geared motor 3 is mounted on the motor mounting part 106, and its output end can be rotatably mounted on the motor mounting part 106 through the motor bushing 18. The first end of the first connecting rod 6 is provided with a tooth 601. One end of the driven wheel assembly meshes with the driving wheel 8, and the other end of the driven wheel assembly meshes with the tooth 601. With this configuration, the geared motor 3 drives the driving wheel 8 to rotate, the driving wheel 8 drives the tooth 601 of the first connecting rod 6 to rotate, and then the first connecting rod 6 drives the second connecting rod 7 to rotate synchronously, realizing the swinging and telescopic movement of the cover 2 relative to the shell 1.

[0058] Optionally, in some embodiments of this utility model, the driven wheel assembly includes a first driven wheel 9, a second driven wheel 10, and a drive shaft 11. For example... Figure 1 and Figure 2 As shown, the first driven wheel 9 meshes with the driving wheel 8, and the second driven wheel 10 meshes with the toothed section 601. The drive shaft 11 is rotatably mounted within the mounting cavity 103, and both the first driven wheel 9 and the second driven wheel 10 are connected to the drive shaft 11 and rotate synchronously. Specifically, as... Figure 7 As shown, the mounting cavity 103 is provided with a drive shaft mounting part 108 adapted to the drive shaft 11. Both ends of the drive shaft 11 can be rotatably mounted on the drive shaft mounting part 108 via the drive shaft sleeve 20. This arrangement achieves efficient and stable power transmission, ensures reliable driving of the first linkage assembly, and thus ensures the stable extension and retraction of the cover 2. The overall structure is compact and suitable for installation on the door.

[0059] Optionally, in some embodiments of this utility model, the concealed handle further includes a limiting plate 12, which is disposed within the mounting cavity 103 and located on the side of the connecting rod shaft 5 away from the cover 2. Specifically, there may be two limiting plates 12, respectively disposed at both ends of the connecting rod shaft 5. Figure 7 As shown, the mounting cavity 103 is provided with a limiting plate mounting hole 109, and the limiting plate 12 can be fixed in the housing 1 by screws. In this way, the connecting rod shaft 5 can be radially limited and fixed by the limiting plate 12, ensuring the stable and reliable operation of the transmission mechanism.

[0060] The concealed handle also includes a protective cover 13, which is disposed within the mounting cavity 103 and covers the side of the transmission mechanism opposite to the cover body 2. Optionally, as Figure 7 As shown, the mounting cavity 103 is provided with a protective cover mounting hole 110, and the protective cover 13 can be fixed to the housing 1 with screws. Furthermore, as... Figure 10 As shown, the protective cover 13 can be provided with various fixing parts that are compatible with the output end of the geared motor 3, the transmission shaft 11, and the transmission gear, so as to match and reliably fix it to the geared motor 3 and the transmission mechanism. In this way, by using the protective cover 13 to encapsulate the motor and the entire transmission mechanism inside the housing 1, the protective cover 13 can fully play its protective role, prevent dust and other impurities from entering the transmission mechanism and causing wear, thereby extending its service life and ensuring the stable and reliable operation of the product.

[0061] Optionally, in some embodiments of this invention, the concealed handle further includes a second linkage assembly, such as... Figure 3 As shown, the second linkage assembly is disposed below the first linkage assembly, and the second linkage assembly includes a pair of third linkages 14 spaced apart along a first direction. The first end of the third linkage 14 is rotatably disposed within the mounting cavity 103, and the second end of the third linkage 14 penetrates the housing 1 and is rotatably connected to the cover 2. Specifically, as... Figure 9As shown, a connecting rod support 203 is provided on the side of the cover 2 facing the housing 1. The connecting rod support 203 includes a pair of support plates spaced apart along a first direction. The pair of support plates are respectively provided with hinge holes corresponding to the first connecting rod assembly and the second connecting rod assembly. Each connecting rod is inserted between the pair of support plates and hinged to them by a pin. With this configuration, when the first connecting rod assembly drives the cover 2 to move, the third connecting rod 14 will rotate synchronously, thereby providing auxiliary support for the cover 2 through the third connecting rod 14, making the movement of the cover 2 more stable and reliable.

[0062] Optionally, in some embodiments of this utility model, such as Figure 9 As shown, the cover 2 has a recess 201 on the side facing the shell 1, such as Figure 4 As shown, when the cover 2 is in the second position, there is a gap 15 between the recess 201 and the housing 1. This provides the user with enough space to reach into the gap 15, thereby easily pushing the cover 2 to extend it, enabling manual control. Even if the electric drive device fails, the cover 2 can be easily pulled out and retracted, making the operation convenient and reliable.

[0063] Optionally, in some embodiments of this utility model, the concealed handle further includes a first position switch 16, such as... Figure 6 As shown, the first position switch 16 is electrically connected to the circuit board 4. The first position switch 16 is disposed within the mounting cavity 103, as... Figure 5 As shown, the first end of the second connecting rod 7 is provided with a cam portion 701. The cam portion 701 is adapted to trigger the first position switch 16 when the cover 2 is in the first position. The circuit board 4 is adapted to control the reduction motor 3 to stop working according to the signal of the first position switch 16. That is, when the reduction motor 3 drives the cover 2 to the first position, the cam portion 701 on the second connecting rod 7 will trigger the first position switch 16. The first position switch 16 sends a signal to the circuit board 4. The circuit board 4 controls the reduction motor 3 to stop according to the position signal, so that the cover 2 is reliably stopped in the first position. When the cover 2 switches from the first position to the second position, the cam portion 701 disengages from the first position switch 16.

[0064] Optionally, in some embodiments of this utility model, the concealed handle further includes a second position switch 17, such as... Figure 6 As shown, the second position switch 17 is electrically connected to the circuit board 4. The second position switch 17 is disposed in the mounting cavity 103, and as... Figure 3 As shown, housing 1 has a clearance opening 104, and the second position switch 17 passes through the clearance opening 104. Figure 2As shown, the cover 2 has a protrusion 202 on the side facing the housing 1. The protrusion 202 is adapted to trigger the second position switch 17 when the cover 2 is in the second position. The circuit board 4 is adapted to control the reduction motor 3 to stop working according to the signal from the second position switch 17. That is, when the reduction motor 3 drives the cover 2 to the second position, the protrusion 202 on the cover 2 will trigger the second position switch 17. The second position switch 17 sends a signal to the circuit board 4, and the circuit board 4 controls the reduction motor 3 to stop according to the position signal, so that the cover 2 is reliably stopped in the second position. When the cover 2 switches from the second position to the first position, the protrusion 202 disengages from the second position switch 17. In this way, the operating status of the cover 2 can be monitored through the position switch, improving the reliability and accuracy of the movement of the cover 2.

[0065] According to an embodiment of the present invention, another aspect is provided: a door body including a concealed handle as described in the various embodiments above. The derivation process of this beneficial effect is roughly similar to the derivation process of the beneficial effect of the concealed handle described above, and therefore will not be repeated here.

[0066] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A concealed handle, characterized in that, include: The housing (1) has a mounting cavity (103) on its first side (101); A cover (2) is movably disposed on the second side (102) of the housing (1), and the cover (2) can switch between a first position and a second position. In the first position, the cover (2) extends out of the housing (1); in the second position, the cover (2) retracts to abut against the housing (1). The first connecting rod assembly has a first end rotatably disposed in the mounting cavity (103), and a second end penetrating the housing (1) and rotatably connected to the cover (2); An electric drive device is disposed in the mounting cavity (103) and connected to the first end of the first linkage assembly. The electric drive device is used to drive the first linkage assembly to rotate, thereby causing the cover (2) to switch between the first position and the second position.

2. The concealed handle according to claim 1, characterized in that, The electric drive device includes: The geared motor (3) has its output end connected to the first connecting rod assembly via a transmission mechanism. The geared motor (3) is used to drive the first connecting rod assembly to rotate. The circuit board (4) is electrically connected to the geared motor (3) and is used to control the geared motor (3).

3. The concealed handle according to claim 2, characterized in that, The first link assembly includes: The connecting rod shaft (5) extends along the first direction and is rotatably disposed within the mounting cavity (103); The first link (6) and the second link (7) are spaced apart along the first direction. The first ends of the first link (6) and the second link (7) are connected to the link shaft (5) and rotate synchronously. The second ends of the first link (6) and the second link (7) pass through the housing (1) and are rotatably connected to the cover (2). The first end of the first link (6) is connected to the geared motor (3) through the transmission mechanism.

4. The concealed handle according to claim 3, characterized in that, The transmission mechanism includes: The drive wheel (8) is located at the output end of the geared motor (3) and rotates synchronously with the geared motor (3); The driven wheel assembly has a toothed portion (601) at the first end of the first connecting rod (6). One end of the driven wheel assembly meshes with the driving wheel (8), and the other end meshes with the toothed portion (601).

5. The concealed handle according to claim 4, characterized in that, The driven wheel assembly includes: The first driven wheel (9) meshes with the driving wheel (8); The second driven wheel (10) meshes with the toothed part (601); The drive shaft (11) is rotatably disposed in the mounting cavity (103), and the first driven wheel (9) and the second driven wheel (10) are both connected to the drive shaft (11) and rotate synchronously.

6. The concealed handle according to claim 3, characterized in that, Also includes: A limiting plate (12) is disposed in the mounting cavity (103), and the limiting plate (12) is located on the side of the connecting rod shaft (5) away from the cover (2); and / or a protective cover (13) is disposed in the mounting cavity (103), and the protective cover (13) covers the side of the transmission mechanism away from the cover body (2).

7. The concealed handle according to any one of claims 2 to 6, characterized in that, Also includes: The second link assembly is disposed below the first link assembly. The second link assembly includes a pair of third links (14) spaced apart along a first direction. The first end of the third link (14) is rotatably disposed in the mounting cavity (103), and the second end passes through the housing (1) and is rotatably connected to the cover (2). And / or, the cover (2) is provided with a recess (201) on the side facing the housing (1), and in the second position, there is a gap (15) between the recess (201) and the housing (1).

8. The concealed handle according to any one of claims 3 to 6, characterized in that, Also includes: A first position switch (16) is electrically connected to the circuit board (4). The first position switch (16) is disposed in the mounting cavity (103). The first end of the second connecting rod (7) is provided with a cam part (701). The cam part (701) is adapted to trigger the first position switch (16) when the cover (2) is in the first position. The circuit board (4) is adapted to control the geared motor (3) to stop working according to the signal of the first position switch (16).

9. The concealed handle according to any one of claims 2 to 6, characterized in that, Also includes: The second position switch (17) is electrically connected to the circuit board (4). The second position switch (17) is disposed in the mounting cavity (103), and the housing (1) is provided with a clearance opening (104). The second position switch (17) passes through the clearance opening (104). The cover (2) is provided with a protrusion (202) on the side facing the housing (1). The protrusion (202) is adapted to trigger the second position switch (17) when the cover (2) is in the second position. The circuit board (4) is adapted to control the geared motor (3) to stop working according to the signal of the second position switch (17).

10. A door body, characterized in that, Including the concealed handle as described in any one of claims 1 to 9.

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