Hidden handle and door body

Abstract

The invention relates to the technical field of handles, and discloses a hidden handle and a door body, the hidden handle comprises: a housing, a first side of which is provided with a mounting cavity; the cover body is movably arranged on the second side of the shell and is switched between a first position and a second position, and the cover body extends out of the shell under the first position; at the second position, the cover body is retracted to abut against the shell; the first end of the first connecting rod assembly is rotationally arranged in the mounting cavity, and the second end penetrates through the shell and is rotationally connected with the cover body; and the electric driving device is arranged in the mounting cavity, connected with the first end of the first connecting rod assembly and used for driving the first connecting rod assembly to rotate. The first connecting rod assembly is driven by the electric driving device to rotate so as to drive the cover body to be switched between the first position and the second position, and therefore automatic stretching or automatic retracting of the cover body is achieved. In this way, the cover body extends out to serve as a handle during use, the cover body is retracted after use, no extra space is occupied, collision is avoided, and the overall attractiveness and use convenience are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of handles, and in particular to a hidden handle and a door body. Background Art

[0002] Doors are widely used in various scenarios, such as entrance doors, interior doors, cabinet doors, etc. Handles are usually designed on the door body for easy operation. Currently, most handles are fixed on the surface of the door body in a protruding style.

[0003] However, this design will take up extra space after installation, affecting the overall aesthetics, and is prone to bumps, causing inconvenience to users. Summary of the Invention

[0004] The present invention provides a hidden handle and door body to solve or improve the problem in the related art that the handle takes up extra space after installation, affects the overall aesthetics, and is prone to bumps and collisions, causing inconvenience to users.

[0005] In a first aspect, the present invention provides a hidden handle, comprising:

[0006] A housing having a mounting cavity on a first side;

[0007] a cover body movably disposed on the second side of the housing, and the cover body is switchable between a first position and a second position, wherein in the first position, the cover body is extended out of the housing; in the second position, the cover body is retracted to abut against the housing;

[0008] a first connecting rod assembly, a first end of which is rotatably disposed in the mounting cavity, and a second end of which passes through the housing and is rotatably connected to the cover;

[0009] An electric drive device is disposed in the mounting cavity and connected to the first end of the first connecting rod assembly. The electric drive device is used to drive the first connecting rod assembly to rotate, so as to drive the cover body to switch between the first position and the second position.

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

[0011] A reduction motor, the output end of which is connected to the first connecting rod assembly through a transmission mechanism, and the reduction motor is used to drive the first connecting rod assembly to rotate;

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

[0013] In an optional embodiment, the first connecting rod assembly includes:

[0014] a connecting rod shaft extending along a first direction and rotatably disposed in the mounting cavity;

[0015] The first connecting rod and the second connecting rod are arranged at intervals along the first direction, the first ends of the first connecting rod and the second connecting rod are connected to the connecting rod shaft and rotate synchronously, the second ends of the first connecting rod and the second connecting rod pass through the shell and are rotatably connected to the cover body, wherein the first end of the first connecting rod is connected to the reduction motor through the transmission mechanism.

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

[0017] A driving wheel is provided at the output end of the reduction motor and rotates synchronously with the reduction motor;

[0018] The driven wheel assembly, the first end of the first connecting rod is provided with a tooth portion, one end of the driven wheel assembly is engaged with the driving wheel, and the other end is engaged with the tooth portion.

[0019] In an optional embodiment, the driven wheel assembly includes:

[0020] a first driven wheel meshing with the driving wheel;

[0021] a second driven wheel meshing with the tooth portion;

[0022] A transmission shaft is rotatably disposed in the mounting cavity, and the first driven wheel and the second driven wheel are both connected to the transmission shaft and rotate synchronously.

[0023] In an optional embodiment, the method further includes:

[0024] a limiting plate, disposed in the mounting cavity, and located on a side of the connecting rod shaft facing away from the cover body;

[0025] and / or a protective cover, which is arranged in the installation cavity, and covers the side of the transmission mechanism away from the cover body.

[0026] In an optional embodiment, the method further includes:

[0027] a second connecting rod assembly disposed below the first connecting rod assembly, the second connecting rod assembly comprising a pair of third connecting rods spaced apart along a first direction, a first end of the third connecting rod being rotatably disposed in the mounting cavity, and a second end penetrating the housing and being rotatably connected to the cover;

[0028] And / or, a recessed portion is provided on a side of the cover body facing the shell, and in the second position, a gap is provided between the recessed portion and the shell.

[0029] In an optional embodiment, the method further includes:

[0030] A first position switch is electrically connected to the circuit board, and the first position switch is arranged in the installation cavity. A cam portion is provided at the first end of the second connecting rod, and the cam portion is suitable for triggering the first position switch when the cover body is in the first position. The circuit board is suitable for controlling the reduction motor to stop working according to the signal of the first position switch.

[0031] In an optional embodiment, the method further includes:

[0032] A second position switch is electrically connected to the circuit board. The second position switch is arranged in the installation cavity, and the shell is provided with an avoidance opening. The second position switch is passed through the avoidance opening. A protrusion is provided on the side of the cover body facing the shell. The protrusion is suitable for triggering the second position switch when the cover body is in the second position. The circuit board is suitable for controlling the reduction motor to stop working according to the signal of the second position switch.

[0033] In a second aspect, the present invention further provides a door body comprising a hidden handle as described in any one of the above items.

[0034] The concealed handle provided by the present invention uses an electric drive device to drive the first connecting rod assembly to rotate, driving the cover body to switch between the first position and the second position, thereby achieving automatic extension and retraction of the cover body. In this way, the cover body can be extended to serve as a handle during use and retracted after use, eliminating the need for additional space and preventing bumps, thereby improving overall aesthetics and ease of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 An exploded view of a hidden handle according to an embodiment of the present invention;

[0037] Figure 2 This is a structural schematic diagram of a hidden handle in a first position according to an embodiment of the present invention;

[0038] Figure 3 This is a second structural diagram of the hidden handle in the first position according to an embodiment of the present invention;

[0039] Figure 4 This is a structural schematic diagram of the hidden handle in the second position according to an embodiment of the present invention;

[0040] Figure 5 is a structural schematic diagram of a first connecting rod assembly according to an embodiment of the present invention;

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

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

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

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

[0045] Figure 10 Schematic diagram of the structure of a protective cover according to an embodiment of the present invention.

[0046] Description of reference numerals:

[0047] 1. Housing; 101. First side; 102. Second side; 103. Mounting cavity; 104. Avoidance opening; 105. Lock core hole; 106. Motor mounting portion; 107. Connecting rod shaft mounting portion; 108. Transmission shaft mounting portion; 109. Limit plate mounting hole; 110. Protective cover mounting hole; 111. Circuit board mounting hole; 112. Connecting rod receiving groove; 2. Cover; 201. Recessed portion; 202. Raised portion; 203. Connecting rod support; 204. Lock core avoidance area; 205. Connecting rod avoidance area; 3. Gear motor; 4. Circuit board; 5. Connecting rod shaft; 6. First connecting rod; 601. Tooth portion; 7. Second connecting rod; 701. Cam portion; 8. Driving wheel; 9. First driven wheel; 10. Second driven wheel; 11. Transmission shaft; 12. Limit plate; 13. Protective cover; 14. Third connecting rod; 15. Gap; 16. First position switch; 17. Second position switch; 18. Motor bushing; 19. Connecting rod bushing; 20. Transmission bushing; 21. Motor wire socket. DETAILED DESCRIPTION

[0048] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0049] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" refers to two or more, unless otherwise clearly and specifically defined.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0051] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0052] The following combination Figures 1 to 10 , describing the hidden handle and door body of an embodiment of the present invention.

[0053] According to an embodiment of the present invention, on the one hand, a hidden handle is provided, comprising a housing 1, a cover 2, a first connecting rod assembly, and an electric drive device. Specifically, Figure 1As shown, the first side 101 of the housing 1 is provided with a mounting cavity 103. The cover 2 is movably provided on the second side 102 of the housing 1, and the cover 2 can be switched 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 out of the housing 1; Figure 4 As shown, when the cover 2 is in the second position, the cover 2 is retracted until it abuts against the shell 1. The first end of the first connecting rod assembly is rotatably disposed in the installation cavity 103, and the second end of the first connecting rod assembly passes through the shell 1 and is rotatably connected to the cover 2. The electric drive device is disposed in the installation cavity 103 and is connected to the first end of the first connecting rod assembly. The electric drive device is used to drive the first connecting rod assembly to rotate, so as to drive the cover 2 to switch between the first position and the second position. In addition, as shown in FIG. Figure 8 As shown, the housing 1 is further provided with a lock core hole 105, and the lock core is correspondingly installed in the lock core hole 105, so as to facilitate the installation of the lock core. The mechanical unlocking or emergency unlocking can be performed by opening the cover 2. Figure 9 As shown, the cover body 2 is provided with a lock core avoidance area 204 corresponding to the lock core hole 105 to ensure that the cover body 2 can be reliably fitted with the housing 1 when the cover body 2 is retracted.

[0054] With this arrangement, the electric drive device drives the first connecting rod assembly to rotate, thereby driving the cover body 2 to switch between the first position and the second position, thereby achieving automatic extension or retraction of the cover body 2. In this way, when in use, the cover body 2 is extended to serve as a handle, and after use, the cover body 2 is retracted without taking up additional space, avoiding bumps and collisions, and improving the overall aesthetics and convenience of use.

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

[0056] Optionally, in some embodiments of the present invention, the first connecting rod assembly includes a connecting rod shaft 5, a first connecting rod 6 and a second connecting rod 7. Figure 5As shown, the connecting rod shaft 5 extends along the first direction, and the connecting rod shaft 5 is rotatably arranged in the installation cavity 103. Specifically, as shown in FIG. Figure 7 As shown, a connecting rod shaft mounting portion 107 adapted to the connecting rod shaft 5 is provided in the mounting cavity 103, and both ends of the connecting rod shaft 5 are rotatably mounted on the connecting rod shaft mounting portion 107 via a connecting rod sleeve 19. The first connecting rod 6 and the second connecting rod 7 are spaced apart along the first direction, and the first end of the first connecting rod 6 is connected to the connecting rod shaft 5 and rotates synchronously, and the second end of the first connecting rod 6 passes through the shell 1 and is rotatably connected to the cover body 2, wherein 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, and the second end of the second connecting rod 7 passes through the shell 1 and is rotatably connected to the cover body 2. For example, the connecting rod is connected to the connecting rod shaft 5 through a flat shaft structure, and the shell 1 is provided with a connecting rod receiving groove 112 for accommodating the connecting rod, and the connecting rod passes through the connecting rod receiving groove 112 and is hinged to the cover body 2 through a rotating shaft. In addition, 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 arrangement, the reduction 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 driving the cover 2 to swing relative to the housing 1, realizing the extension and retraction of the cover 2. At the same time, the connecting rods are arranged on both sides of the cover 2 to ensure smooth movement of the cover 2.

[0057] Optionally, in some embodiments of the present invention, the transmission mechanism includes a driving wheel 8 and a driven wheel assembly. Figure 2 As shown, the driving wheel 8 is arranged at the output end of the reduction motor 3, and the driving wheel 8 rotates synchronously with the reduction motor 3. Specifically, as Figure 7 As shown, a motor mounting portion 106 compatible with the reduction motor 3 is provided within the mounting cavity 103. The reduction motor 3 is mounted on the motor mounting portion 106, and its output end can be rotatably mounted on the motor mounting portion 106 via the motor sleeve 18. A tooth portion 601 is provided 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 of the driven wheel assembly meshes with the tooth portion 601. With this arrangement, the reduction motor 3 drives the driving wheel 8 to rotate, which in turn drives the tooth portion 601 of the first connecting rod 6 to rotate. This, in turn, drives the second connecting rod 7 to rotate synchronously, thereby enabling the cover 2 to swing and extend relative to the housing 1.

[0058] Optionally, in some embodiments of the present invention, the driven wheel assembly includes a first driven wheel 9, a second driven wheel 10 and a transmission shaft 11. Figure 1 and Figure 2 As shown, the first driven wheel 9 is meshed with the driving wheel 8, and the second driven wheel 10 is meshed with the tooth portion 601. The transmission shaft 11 is rotatably arranged in the installation cavity 103, and the first driven wheel 9 and the second driven wheel 10 are both connected to the transmission shaft 11 and rotate synchronously. Specifically, as Figure 7 As shown, a drive shaft mounting portion 108 adapted to the drive shaft 11 is provided in the mounting cavity 103. Both ends of the drive shaft 11 can be rotatably mounted on the drive shaft mounting portion 108 via the drive shaft sleeve 20. This arrangement achieves efficient and stable power transmission, ensures reliable driving of the first connecting rod assembly, and further ensures stable extension and retraction of the cover body 2. The overall structure is compact and suitable for installation on the door body.

[0059] Optionally, in some embodiments of the present invention, the hidden handle further includes a limit plate 12, which is disposed in the mounting cavity 103 and is located on the side of the connecting rod shaft 5 facing away from the cover body 2. Specifically, there may be two limit plates 12, which are respectively disposed at both ends of the connecting rod shaft 5. Figure 7 As shown, a limiting plate mounting hole 109 is provided in the mounting cavity 103, 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 to ensure stable and reliable operation of the transmission mechanism.

[0060] The hidden handle further includes a protective cover 13, which is disposed in the mounting cavity 103 and covers the side of the transmission mechanism facing away from the cover body 2. Figure 7 As shown, a protective cover mounting hole 110 is provided in the mounting cavity 103, and the protective cover 13 can be fixed in the housing 1 by screws. Figure 10 As shown, the protective cover 13 can be provided with various fixing portions adapted to the output end of the reduction motor 3, the transmission shaft 11, and the transmission gear, so as to match the reduction motor 3 and the transmission mechanism and securely fix them. In this way, the protective cover 13 encloses the motor and the entire transmission mechanism within the housing 1, effectively protecting the transmission mechanism from dust and other impurities that could intrude and cause wear, thereby extending its service life and ensuring stable and reliable operation of the product.

[0061] Optionally, in some embodiments of the present invention, the hidden handle further includes a second connecting rod assembly, such as Figure 3 As shown, the second connecting rod assembly is arranged below the first connecting rod assembly, and the second connecting rod assembly includes a pair of third connecting rods 14 spaced apart along the first direction. The first end of the third connecting rod 14 is rotatably arranged in the installation cavity 103, and the second end of the third connecting rod 14 passes through the housing 1 and is rotatably connected to the cover 2. Specifically, as shown 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 comprises a pair of support plates spaced apart along a first direction. Each of the support plates has a hinge hole corresponding to the first and second connecting rod assemblies. Each connecting rod is inserted between the support plates and hingedly connected via a pin. With this arrangement, when the first connecting rod assembly drives the cover 2 to move, the third connecting rod 14 rotates synchronously therewith, providing auxiliary support for the cover 2 through the third connecting rod 14, making the movement of the cover 2 smoother and more reliable.

[0062] Optionally, in some embodiments of the present invention, Figure 9 As shown, the cover 2 is provided with a recessed portion 201 on one side facing the housing 1. Figure 4 As shown, when the cover 2 is in the second position, a gap 15 is formed between the recessed portion 201 and the housing 1. This provides sufficient space for the user to reach into the gap 15, thereby easily pushing the cover 2 to extend it, thus achieving 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 the present invention, the hidden 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 arranged in the mounting cavity 103, as shown in FIG. 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 operating based on the signal from the first position switch 16. Specifically, when the reduction motor 3 drives the cover 2 to the first position, the cam portion 701 on the second connecting rod 7 triggers 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 based on the position signal, thereby reliably stopping the cover 2 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 the present invention, the hidden 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, and the second position switch 17 is arranged in the installation cavity 103, and as shown in FIG. Figure 3 As shown, the housing 1 is provided with an escape opening 104, and the second position switch 17 is passed through the escape opening 104. Figure 2As shown, the cover 2 is provided with a raised portion 202 on the side facing the housing 1. The raised portion 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 operating based on the signal from the second position switch 17. That is, when the reduction motor 3 drives the cover 2 to the second position, the raised portion 202 on the cover 2 triggers the second position switch 17. The second position switch 17 sends a signal to the circuit board 4. The circuit board 4 controls the reduction motor 3 to stop based on the in-position signal, thereby reliably stopping the cover 2 in the second position. When the cover 2 switches from the second position to the first position, the raised portion 202 disengages from the second position switch 17. In this way, the operating status of the cover 2 can be monitored via the position switch, improving the reliability and accuracy of the movement of the cover 2.

[0065] According to another embodiment of the present invention, a door body is provided, including the hidden handle as described in the above embodiments. The derivation process of this beneficial effect is roughly similar to the derivation process of the beneficial effect of the above hidden handle, so it will not be repeated here.

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

Claims

1. A hidden handle, characterized in that: include: The housing (1) has a first side (101) provided with a mounting cavity (103); A cover (2) is movably arranged on the second side (102) of the shell (1), and the cover (2) is switchable between a first position and a second position. In the first position, the cover (2) extends out of the shell (1); in the second position, the cover (2) is retracted to abut against the shell (1); A first connecting rod assembly, a first end of which is rotatably disposed in the mounting cavity (103), and a second end of which passes through the housing (1) and is rotatably connected to the cover (2); An electric drive device is arranged in the installation cavity (103) and connected to the first end of the first connecting rod assembly. The electric drive device is used to drive the first connecting rod assembly to rotate, so as to drive the cover body (2) to switch between the first position and the second position.

2. The hidden handle according to claim 1, characterized in that: The electric drive device comprises: A reduction motor (3), the output end of which is connected to the first connecting rod assembly via a transmission mechanism, and the reduction motor (3) is used to drive the first connecting rod assembly to rotate; A circuit board (4) is electrically connected to the reduction motor (3), and the circuit board (4) is used to control the reduction motor (3).

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

4. The hidden handle according to claim 3, characterized in that: The transmission mechanism comprises: A driving wheel (8) is provided at the output end of the reduction motor (3) and rotates synchronously with the reduction motor (3); A driven wheel assembly, wherein the first end of the first connecting rod (6) is provided with a tooth portion (601), one end of the driven wheel assembly is engaged with the driving wheel (8), and the other end is engaged with the tooth portion (601).

5. The hidden handle according to claim 4, characterized in that: The driven wheel assembly comprises: a first driven wheel (9) meshing with the driving wheel (8); a second driven wheel (10) meshing with the tooth portion (601); A transmission shaft (11) is rotatably disposed in the mounting cavity (103); the first driven wheel (9) and the second driven wheel (10) are both connected to the transmission shaft (11) and rotate synchronously.

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

7. The hidden handle according to any one of claims 2 to 6, characterized in that: Also includes: a second connecting rod assembly disposed below the first connecting rod assembly, the second connecting rod assembly comprising a pair of third connecting rods (14) spaced apart along a first direction, a first end of the third connecting rod (14) being rotatably disposed in the mounting cavity (103), and a second end penetrating the housing (1) and being rotatably connected to the cover (2); And / or, a recessed portion (201) is provided on a side of the cover (2) facing the shell (1), and in the second position, a gap (15) is provided between the recessed portion (201) and the shell (1).

8. The hidden 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), and the first position switch (16) is arranged in the installation cavity (103). A cam portion (701) is provided at the first end of the second connecting rod (7), and the cam portion (701) is suitable for triggering the first position switch (16) when the cover body (2) is in the first position. The circuit board (4) is suitable for controlling the reduction motor (3) to stop working according to the signal of the first position switch (16).

9. The hidden handle according to any one of claims 2 to 6, characterized in that: Also includes: A second position switch (17) is electrically connected to the circuit board (4). The second position switch (17) is arranged in the installation cavity (103), and the housing (1) is provided with a bypass opening (104). The second position switch (17) is passed through the bypass opening (104). A protrusion (202) is provided on the side of the cover (2) facing the housing (1). The protrusion (202) is suitable for triggering the second position switch (17) when the cover (2) is in the second position. The circuit board (4) is suitable for controlling the reduction motor (3) to stop working according to the signal of the second position switch (17).

10. A door body, characterized in that: The invention comprises the hidden handle according to any one of claims 1 to 9.

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