CN211038162U

CN211038162U - Automatic locking device that falls of improvement clutching mechanism

Info

Publication number: CN211038162U
Application number: CN201921151812.0U
Authority: CN
Inventors: 余秋民
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-07-17
Anticipated expiration: 2029-07-22

Abstract

The utility model discloses an automatic lock-falling device of an improved clutch mechanism, which comprises a shell, a handle motor, a speed reduction gear group, a clutch mechanism, a connecting gear piece, a rotating piece and a connecting piece; the handle motor is arranged in the first installation cavity, the output end of the handle motor extends to the second installation cavity, and the clutch mechanism, the connecting tooth sheets and the rotating piece are sequentially arranged on the right side of the second installation cavity in a straight line in the extending direction of the output end of the handle motor; the connecting piece is arranged at the opening and is connected with the rotating piece, and a plurality of speed reducing tooth sheets of the speed reducing tooth group are arranged at the upper end of the second installation cavity in a triangular mode; therefore, the layout of the transmission parts is reasonable, and particularly, the speed reduction tooth groups are arranged in a triangular structure, so that the structure of the automatic lock falling device is more compact; the torque can be ensured, and the size of the device can be reduced, so that the device can be assembled in a frame body, and the attractiveness is improved; the two swing arms of the swing piece are between 70 degrees and 90 degrees, so that the electric control precision of the handle motor is reduced while the occupied space is reduced.

Description

Automatic locking device that falls of improvement clutching mechanism

Technical Field

The utility model belongs to the technical field of the intelligence house technique and specifically relates to indicate an improvement clutching mechanism's automatic locking device that falls.

Background

With the rapid development of science and technology, the life concept of people is gradually changed. Various home appliances are also changing. Due to the continuous maturity of single chip microcomputer technology and computer technology, household appliances are more and more intelligent. Windows are no exception, and electric smart windows are widely used in developed countries such as europe and the united states. The intelligent window in the current market not only can realize the automatic opening and closing function, but also can realize the automatic locking function; the automatic locking function generally adopts the automatic locking device to complete the locking action, and the automatic locking device can ensure that the locking process can reliably run only by ensuring enough torque because the inner space of the frame body of the window is smaller. In addition, the existing clutch mechanism used in the lock-falling device has complex structure and excessive components, so that the clutch efficiency is low and unreliable.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an automatic lock-down device of an improved clutch mechanism, which has a reasonable structure, and can reduce the size of the automatic lock-down device while ensuring the torque, so that the automatic lock-down device can be installed in the frame of a window, thereby improving the aesthetic property of the window; and the structure of the clutch mechanism is improved, so that the clutch electric control precision requirement is lowered, and the product feasibility is higher.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an automatic lock-falling device of an improved clutch mechanism comprises a shell, a handle motor, a speed reduction gear set, the clutch mechanism, a connecting gear piece, a rotating piece and a connecting piece, wherein the handle motor, the speed reduction gear set, the clutch mechanism, the connecting gear piece, the rotating piece and the connecting piece are arranged in the shell and sequentially driven; the shell comprises a bottom shell and an upper cover which are assembled with each other, and the upper cover is provided with a limiting convex rib; the shell is internally provided with a first mounting cavity for mounting a handle motor and a second mounting cavity for mounting a transmission part, and the left side of the second mounting cavity is provided with an opening; the handle motor is arranged in the first installation cavity, and the output end of the handle motor extends into the second installation cavity; the clutch mechanism, the connecting tooth plates and the rotating piece are sequentially arranged on the right side of the second mounting cavity in a straight line in the extending direction of the output end of the handle motor, and the connecting piece is movably arranged in the opening and connected with the rotating piece; the speed reduction tooth group is assembled at the upper end of the second mounting cavity, a plurality of speed reduction tooth sheets of the speed reduction tooth group are arranged in a triangular shape, and the speed reduction tooth group is connected between the handle motor and the clutch mechanism;

the swing clutch mechanism comprises a central tooth piece, a swing piece and a connecting tooth piece, wherein the central tooth piece comprises a lower tooth piece and an upper tooth piece which are integrally connected and fixed and are coaxial with a central shaft; the swinging piece can be arranged between the lower tooth piece and the upper tooth piece in a swinging mode; the swinging piece comprises a lower swinging piece and an upper swinging piece, a space is formed by the lower swinging piece and the upper swinging piece, and the upper tooth piece and the connecting tooth piece are positioned in the space; one end of the lower swinging part is provided with a rotating hole in a penetrating manner, a rotating column is arranged between the lower gear and the upper gear, and the lower swinging part is assembled on the rotating column through the rotating hole and swings around the center of the rotating column; the swinging piece is of a V-shaped structure and is provided with a middle pin joint position and two swinging arms which extend from the middle pin joint position to two sides in an inclined way respectively; the angle between the two swing arms is 70-90 degrees; the swing arm of the lower swinging part is provided with a mounting column in an upward protruding manner;

the central tooth piece drives the connecting tooth piece to rotate and simultaneously drives the swinging piece to swing so that the connecting tooth piece and the connecting tooth piece form clutch connection;

when the connecting tooth piece and the connecting tooth piece are separated, the two connecting tooth pieces face the side where the handle motor is located;

when the engaging tooth piece is engaged with the engaging tooth piece, one of the engaging tooth piece is engaged with the engaging tooth piece, and the mounting column for mounting the engaging tooth piece abuts against the limiting convex rib to prevent over-swinging.

As a preferred embodiment: the first column body for mounting the clutch mechanism comprises a first round pin joint section and a second round pin joint section, wherein the first round pin joint section is connected to the upper side of the first round pin joint section; the first round pin joint section penetrates through the lower gear piece, the rotary column and the upper gear piece, the diameter of the second round pin joint section is smaller than that of the first round pin joint section, the top end of the first round pin joint section is formed on a first step surface arranged around the second round pin joint section, and the pin joint of the upper swing piece is in pin joint with the second round pin joint section and limited on the first step surface; the mounting column is provided with a third circular pin joint section and a fourth circular pin joint section connected to the upper side of the third circular pin joint section, the diameter of the fourth circular pin joint section is smaller than that of the third circular pin joint section, and the top end of the third circular pin joint section is formed on a second step surface arranged around the fourth circular pin joint section; the third circular pivoting section is sleeved with a pressure spring, the connecting tooth piece is arranged on the third circular pivoting section, and the upper end and the lower end of the pressure spring are respectively limited to the lower side of the connecting tooth piece and the upper side of the lower swinging piece; the other end of the upper swing part is fixedly connected to the fourth round pin joint section and limited by the second step surface.

As a preferred embodiment: the end parts of the first cylinder and the second cylinder extend to the upper cover, and the concave position is provided with a through hole.

As a preferred embodiment: the connecting piece comprises a moving rod and a moving rack, the moving rod is movably arranged at the opening, and the moving rack is connected with the rotating piece;

the end part of the moving rod is provided with a connecting hole for connecting with the lock rod and a limiting part for limiting the moving distance of the moving rod;

the left side of the end part of the bottom shell is provided with an installation part for installing a device, the outward surface of the installation part is a limiting surface, and the limiting part can be selectively limited on the limiting surface;

the inward surface of the mounting part is a positioning surface, and the upper cover is limited by the positioning surface after being mounted on the bottom shell.

As a preferred embodiment: the movable rod is provided with a movable convex strip, and the bottom shell and the upper cover are provided with movable grooves at the opening; the moving convex strip is limited in the moving groove.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme: the first mounting cavity for mounting the handle motor and the second mounting cavity for mounting the transmission part are arranged on the shell, so that the parts are effectively distinguished; the clutch mechanism, the connecting tooth plates and the rotating piece are sequentially arranged on the right side of the second mounting cavity in a straight line in the extending direction of the output end of the handle motor, the connecting piece can be movably arranged on an opening in the left side of the second mounting cavity and is connected with the rotating piece, and the plurality of speed reducing tooth plates of the speed reducing tooth group are arranged at the upper end of the second mounting cavity in a triangular structure and are connected between the handle motor and the clutch mechanism; therefore, the layout of the transmission parts is reasonable, and particularly, the speed reduction tooth groups are arranged in a triangular structure, so that the structure of the whole automatic lock falling device is more compact; the size of the automatic locking device can be greatly reduced by using the reasonable layout while the torque is ensured, so that the automatic locking device can be assembled in a frame body of a window, and the attractiveness of the window is improved;

moreover, the angle of the two swing arms of the swing piece is set between 70 degrees and 90 degrees, so that on one hand, the overall size of the clutch mechanism can be reduced, the space occupied by the shell is reduced, and the overall size of the whole lock dropping device can be reduced; on the other hand, the swing angle of the swing piece is increased, so that the requirement on the electric control precision of controlling the swing of the swing piece 42 by the handle motor is lower, the control is easier, and the product credibility is higher.

Meanwhile, the pressure spring increases the rotation resistance of the connecting tooth part, correspondingly, the meshing transmission resistance of the upper tooth part and the connecting tooth part is increased, the pivot connection between the upper swing part and the first cylinder is smooth, the resistance is small, and the swinging smoothness of the swinging part is improved from multiple aspects, so that the clutch control accuracy and rapidity are improved.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a top view of a preferred embodiment of the present invention.

Fig. 2 is a top view of the preferred embodiment of the present invention for opening the cover.

Fig. 3 is a top view of the clutch mechanism according to the preferred embodiment of the present invention.

Fig. 4 is a front view of fig. 3.

Fig. 5 is an exploded view of fig. 4.

Fig. 6 is a right side view of fig. 5.

Fig. 7 is a front view of the center piece of the preferred embodiment of the present invention.

The attached drawings indicate the following:

10. casing 101, first installation cavity

102. Second mounting cavity 1021, opening

1022. Movable groove 11 and bottom shell

111. First cylinder 1111 and first round pin joint section

1112. Second round pin joint section 1113 and first step surface

112. Second post 113, concave

114. Mounting portion 1141, limiting surface

1142. Positioning surface 12, upper cover

121. Limiting convex rib 20 and handle motor

21. Output end 30, reduction gear set

40. Clutch mechanism 41, center

411. Lower gear 412, upper gear

413. Rotating column 42, swinging member

4201. Pivot joint 4202, swing arm

421. Lower swinging piece 4211 and rotating hole

422. Upper ornament 423 and space

424. Mounting column 4241 and third circular pivoting section

4242. Fourth round pin joint section 4243 and second step surface

43. Engaging tooth 44, pressure spring

50. Engaging tooth piece 60, rotary member

70. Connecting piece 71, moving rod

711. Connecting hole 712, limiting part

713. Moving the rib 72, moving the rack.

Detailed Description

Referring to fig. 1 to 7, which show the detailed structure of the preferred embodiment of the present invention, an automatic lock-down device of an improved clutch mechanism comprises a housing 10, a handle motor 20 installed in the housing 10 and sequentially driven, a reduction gear set 30, a clutch mechanism 40, an engaging gear 50, a rotating member 60 and an engaging member 70.

The shell 10 consists of a bottom shell 11 and an upper cover 12, a first mounting cavity 101 for mounting the handle motor 20 and a second mounting cavity 102 for mounting a transmission part are arranged inside the shell 10, and the left side of the second mounting cavity 102 is provided with an opening 1021; the handle motor 20 is mounted in the first mounting cavity 101, and the output end 21 of the handle motor 20 extends into the second mounting cavity 102; the clutch mechanism 40, the connecting tooth plates 50 and the rotating piece 60 are sequentially arranged on the right side of the second mounting cavity 102 in a straight line in the extending direction of the output end 21 of the handle motor, and the connecting piece 70 can be movably arranged at the opening 1021 and is connected with the rotating piece 60; the reduction tooth group 30 is assembled at the upper end of the second mounting cavity 102, a plurality of reduction teeth of the reduction tooth group 30 are arranged in a triangular shape, and the reduction tooth group 30 is connected between the handle motor 20 and the clutch mechanism 40.

Through a first installation cavity 101 for installing the handle motor 20 and a second installation cavity 102 for installing the transmission part which are arranged on the shell 10, the parts are effectively distinguished; the clutch mechanism 40, the connecting tooth plates 50 and the rotating piece 60 are sequentially arranged on the right side of the second mounting cavity 102 in a straight line in the extending direction of the output end 21 of the handle motor 20, the connecting piece 70 is movably arranged on a left opening 1021 of the second mounting cavity 102 and is connected with the rotating piece 60, and the plurality of speed reducing tooth plates of the speed reducing tooth group 30 are arranged at the upper end of the second mounting cavity 102 in a triangular structure and are connected between the handle motor 20 and the clutch mechanism 40; therefore, the transmission parts are compact and reasonable in arrangement, and particularly, the speed reduction tooth group 30 is arranged in a triangular structure, so that the structure of the whole automatic locking device is more compact; the size of the automatic locking device can be greatly reduced by means of the reasonable layout while the torque is guaranteed, so that the automatic locking device can be assembled in a frame body of a window, and the attractiveness of the window is improved.

In more detail, the bottom shell 11 is provided with a first column 111 for mounting the reduction gear set 30 and the clutch mechanism 40, and a second column 112 for mounting the engaging gear 50, and the bottom shell 11 and the upper cover 12 are each provided with a recess 113 for mounting the rotary member 60. The ends of the first column 111 and the second column 112 extend to the upper cover 12, and the recess 113 has a through hole 1131; the through hole 1131 exposes a square hole of the rotary member 60 for mounting a handle to perform a manual lock-off function. Through the arrangement of the first cylinder 111, the second cylinder 112 and the concave position 113, the installation of each transmission part is more convenient and simpler.

Next, the specific structure of the clutch mechanism 40 is described in detail. The swing clutch mechanism 40 comprises a central gear 41, a swing member 42 and a connecting gear 43, wherein the central gear 41 comprises a lower gear 411 and an upper gear 412 which are integrally connected and fixed and are concentric with the central shaft; the swinging piece 42 can be arranged between the lower gear 411 and the upper gear 412 in a swinging mode; the swinging member 42 comprises a lower swinging member 421 and an upper swinging member 422, a space 423 is formed by the distance device between the lower swinging member 421 and the upper swinging member 422, and the upper tooth member 412 and the engaging tooth member 43 are positioned in the space 423; a rotation hole 4211 is formed in one end of the lower swing member 421 in a penetrating manner, a rotation column 413 is arranged between the lower gear 411 and the upper gear 412, and the lower swing member 421 is assembled on the rotation column 413 through the rotation hole 4211 and swings around the center of the rotation column 413; the swinging member 42 is a V-shaped structure, and has a middle pivot joint position 4201 and two swinging arms 4202 extending from the middle pivot joint position 4201 to two sides respectively; the first cylinder 111 for mounting the clutch mechanism 10 includes a first circular pivot section 1111 connected to a second circular pivot section 1112 on the upper side of the first circular pivot section 1111; the first circular pivoting section 1111 passes through the lower tooth element 411, the rotary column 413 and the upper tooth element 412, the diameter of the second circular pivoting section 1112 is smaller than that of the first circular pivoting section 1111, the top end of the first circular pivoting section 1111 is formed on a first step surface 1113 arranged around the second circular pivoting section 1112, and the pivoting position 4201 of the upper swing element 422 is pivoted on the second circular pivoting section 1112 and limited on the first step surface 1113; the swing arm 4202 of the lower swing part 421 is provided with a mounting post 424 protruding upwards; the mounting column 424 is provided with a third circular pin joint section 4241 and a fourth circular pin joint section 4242 connected to the upper side of the third circular pin joint section 4241, the diameter of the fourth circular pin joint section 4242 is smaller than that of the third circular pin joint section 4241, and the top end of the third circular pin joint section 4241 is formed on a second step surface 4243 arranged around the fourth circular pin joint section 4242; the third circular pivoting section 4241 is sleeved with a pressure spring 44, the engaging tooth 43 is mounted on the third circular pivoting section 4241, and the upper end and the lower end of the pressure spring 44 are respectively limited by the lower side of the engaging tooth 43 and the upper side of the lower swinging member 421; the other end of the upper swing piece 422 is fixedly connected to the fourth circular pivot joint 4242 and is limited by a second step surface 4243; the central gear 41 drives the engaging gear 43 to rotate and simultaneously drives the swinging member 42 to swing, so that the engaging gear 43 and the engaging tooth 50 form a clutch connection.

And, through the clutching mechanism 40 who sets up, when needs manual lock that falls, only need utilize the handle of connecting in rotating member 60 just can manually rotate the rotating member and remove with transmission link piece 70 and accomplish manual lock that falls, and this process can not drive handle motor 20 and rotate, can protect handle motor 20 on the one hand, prolongs handle motor 20's life, and on the other hand can make manual lock that falls lighter. In addition, because the installation of going up the goods of furniture for display rather than for use is limited by first spacing face and the spacing face of second, goes up that the pin joint is smooth and easy between goods of furniture for display rather than for use and the first cylinder, the resistance is little, improves the swing smoothness nature of swing piece from many aspects to, improve clutch control accuracy nature and rapidity.

The upper side of the fourth circular pin joint 4242 of the mounting post 424 is integrally connected with a screw thread section (not shown), the screw thread section is provided with a screw cap (not shown), the upper side and the lower side of the upper swing part 422 are fixed by the screw cap and a second step surface 4243, and the fixing mode is simple in structure and easy to assemble.

It can be seen that the central member 41, the oscillating member 42 and the engaging tooth member 43 form the core of the whole clutch mechanism 40, the rotating end 421 of the oscillating member 42 is rotatably coupled to the central member 41, the engaging tooth member 43 is mounted to the oscillating arm 4202 of the oscillating member 42, and the central tooth member 41 drives the engaging tooth member 43 to rotate and simultaneously drives the oscillating member 42 to oscillate so that the engaging tooth member 43 and the engaging tooth 50 form a clutch connection; the clutch has simple structure, easy realization of the clutch process and reliable operation; therefore, the locking device is very beneficial to popularization and application; the angle of the two swing arms 4202 of the swing piece 42 is set between 70 ° and 90 °, so that on one hand, the overall size of the clutch mechanism can be reduced, the space occupied by the housing 10 is reduced, and the overall size of the entire drop lock device can be reduced; on the other hand, the swing angle of the swing piece 42 is increased, so that the requirement on the electric control precision of the handle motor 20 for controlling the swing of the swing piece 42 is lower, the control is easier, and the product feasibility is higher.

The connecting member 70 includes a moving rod 71 and a moving rack 72, the moving rod 71 is movably disposed at the opening 1021, and the moving rack 72 is connected to the rotating member 60. Specifically, the end of the moving rod 71 is provided with a connecting hole 711 for connecting with a lock rod and a limiting part 712 for limiting the moving distance of the moving rod 71; the left side of the end of the bottom case 11 is provided with an installation part 114 for installing a device, the outward surface of the installation part 114 is a limiting surface 1141, and the limiting part 712 can be selectively limited on the limiting surface 1141; the limiting part 712 and the limiting surface 1141 are used for limiting, overtravel movement of the movable rack 72 can be prevented, and the use reliability of the lock dropping device is improved. The inward surface of the mounting portion 114 is a positioning surface 1142, and after the upper cover 12 is mounted on the bottom case 11, the upper cover 12 is limited by the positioning surface 1142; the positioning surface 1142 can facilitate the process of mounting the upper cover 12 on the bottom case 11.

The moving rod 71 is provided with a moving convex bar 713, and the bottom shell 11 and the upper cover 12 are provided with a moving groove 1022 at the opening 1021; the movement ribs 713 are confined in the movement grooves 1022; this arrangement ensures the movement reliability of the movable rod 71. The upper cover 12 is provided with a limit rib 121, when one of the engaging teeth 43 is in clutch connection with the engaging tooth 50, the mounting column 424 for mounting the engaging teeth 43 abuts against the limit rib 121 to prevent over-swinging, so as to ensure reliable operation of the clutch mechanism 40. Specifically, as shown in fig. 2, when the engaging teeth 43 and the engaging teeth 50 are separated, both of the engaging teeth 43 face the side of the handle motor 20; when the engaging teeth 43 and the engaging teeth 50 are engaged, one of the engaging teeth 43 is engaged with the engaging teeth 50, and the mounting posts 424 for mounting the engaging teeth 43 abut against the limiting rib 121 to prevent the over-swing. Therefore, when the two engaging gears 43 are switched between the on state and the off state, the oscillating member 42 has a large oscillating angular stroke, sufficient electric control time can be provided, the requirement on electric control precision is not high, and the product feasibility is good.

The utility model discloses a design focus lies in: the first mounting cavity for mounting the handle motor and the second mounting cavity for mounting the transmission part are arranged on the shell, so that the parts are effectively distinguished; the clutch mechanism, the connecting tooth plates and the rotating piece are sequentially arranged on the right side of the second mounting cavity in a straight line in the extending direction of the output end of the handle motor, the connecting piece can be movably arranged on an opening in the left side of the second mounting cavity and is connected with the rotating piece, and the plurality of speed reducing tooth plates of the speed reducing tooth group are arranged at the upper end of the second mounting cavity in a triangular structure and are connected between the handle motor and the clutch mechanism; therefore, the layout of the transmission parts is reasonable, and particularly, the speed reduction tooth groups are arranged in a triangular structure, so that the structure of the whole automatic lock falling device is more compact; the size of the automatic locking device can be greatly reduced by using the reasonable layout while the torque is ensured, so that the automatic locking device can be assembled in a frame body of a window, and the attractiveness of the window is improved;

moreover, the angle of the two swing arms of the swing piece is set between 70 degrees and 90 degrees, so that on one hand, the overall size of the clutch mechanism can be reduced, the space occupied by the shell is reduced, and the overall size of the whole lock dropping device can be reduced; on the other hand, the swing angle of the swing piece is increased, so that the requirement on the electric control precision of the handle motor 20 for controlling the swing of the swing piece 42 is lower, the control is easier, and the product credibility is higher;

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides an improvement clutching mechanism's automatic locking device that falls which characterized in that: the manual transmission device comprises a shell (10), a handle motor (20), a speed reduction gear set (30), a clutch mechanism (40), a connecting tooth piece (50), a rotating piece (60) and a connecting piece (70), wherein the handle motor (20), the speed reduction gear set, the clutch mechanism, the connecting tooth piece (50), the rotating piece and the connecting piece are arranged in the shell (10) and sequentially driven; the shell (10) comprises a bottom shell (11) and an upper cover (12) which are assembled with each other, and the upper cover (12) is provided with a limiting convex rib (121); the shell (10) is internally provided with a first mounting cavity (101) for mounting a handle motor (20) and a second mounting cavity (102) for mounting a transmission part, and the left side of the second mounting cavity (102) is provided with an opening (1021); the handle motor (20) is mounted in the first mounting cavity (101), and an output end (21) of the handle motor (20) extends into the second mounting cavity (102); the clutch mechanism (40), the connecting tooth plates (50) and the rotating piece (60) are sequentially arranged on the right side of the second mounting cavity (102) in a straight line in the extending direction of the output end (21) of the handle motor, and the connecting piece (70) is movably arranged in the opening (1021) and is connected with the rotating piece (60); the speed reduction gear set (30) is assembled at the upper end of the second mounting cavity (102), a plurality of speed reduction gear sheets of the speed reduction gear set (30) are arranged in a triangular mode, and the speed reduction gear set (30) is connected between the handle motor (20) and the clutch mechanism (40);

the clutch mechanism (40) comprises a central gear (41), a swinging piece (42) and a connecting gear (43), wherein the central gear (41) comprises a lower gear (411) and an upper gear (412) which are integrally connected and fixed and are concentric with a central shaft; the swinging piece (42) can be arranged between the lower tooth piece (411) and the upper tooth piece (412) in a swinging mode; the swinging piece (42) comprises a lower swinging piece (421) and an upper swinging piece (422), a space (423) is formed by the distance device of the lower swinging piece (421) and the upper swinging piece (422), and the upper tooth piece (412) and the engaging tooth piece (43) are positioned in the space (423); one end of the lower swinging part (421) is provided with a rotating hole (4211) in a penetrating manner, a rotating column (413) is arranged between the lower gear (411) and the upper gear (412), and the lower swinging part (421) is assembled on the rotating column (413) through the rotating hole (4211) and swings around the center of the rotating column (413); the swinging piece (42) is of a V-shaped structure and is provided with a middle pivot joint position (4201) and two swinging arms (4202) which extend from the middle pivot joint position (4201) to two sides in an inclined way; the angle between the two swing arms (4202) is 70-90 degrees; a mounting column (424) is convexly arranged on a swing arm (4202) of the lower swing part (421);

the central gear piece (41) drives the engaging gear piece (43) to rotate and simultaneously drives the swinging piece (42) to swing so that the engaging gear piece (43) and the engaging gear piece (50) form clutch connection;

when the engaging tooth piece (43) is separated from the engaging tooth piece (50), the two engaging tooth pieces (43) face to the side where the handle motor (20) is located;

when the engaging teeth (43) and the engaging teeth (50) are engaged, one of the engaging teeth (43) is engaged with the engaging teeth (50), and the mounting posts (424) for mounting the engaging teeth (43) abut against the limiting ribs (121) to prevent excessive swinging.

2. The automatic lock-down device of an improved clutch mechanism as claimed in claim 1, wherein: the first cylinder (111) used for mounting the clutch mechanism (40) comprises a first circular pivoting section (1111) and a second circular pivoting section (1112) connected to the upper side of the first circular pivoting section (1111); the first circular pivoting section (1111) penetrates through the lower tooth piece (411), the rotating column (413) and the upper tooth piece (412), the diameter of the second circular pivoting section (1112) is smaller than that of the first circular pivoting section (1111), the top end of the first circular pivoting section (1111) is formed on a first step surface (1113) arranged around the second circular pivoting section (1112), and a pivoting position (4201) of the upper swing piece (422) is pivoted on the second circular pivoting section (1112) and limited on the first step surface (1113); the mounting column (424) is provided with a third circular pivoting section (4241) and a fourth circular pivoting section (4242) connected to the upper side of the third circular pivoting section (4241), the diameter of the fourth circular pivoting section (4242) is smaller than that of the third circular pivoting section (4241), and the top end of the third circular pivoting section (4241) is formed on a second step surface (4243) arranged around the fourth circular pivoting section (4242); the third circular pivoting section (4241) is sleeved with a pressure spring (44), the connecting tooth piece (43) is installed on the third circular pivoting section (4241), and the upper end and the lower end of the pressure spring (44) are respectively limited by the lower side of the connecting tooth piece (43) and the upper side of the lower swinging piece (421); the other end of the upper swing piece (422) is fixedly connected to the fourth circular pin joint section (4242) and limited by the second step surface (4243).

3. The automatic lock-down device of an improved clutch mechanism as claimed in claim 2, wherein: the ends of the first cylinder (111) and the second cylinder (112) extend to the upper cover (12).

4. The automatic lock-down device of an improved clutch mechanism as claimed in claim 2, wherein: the connecting piece (70) comprises a moving rod (71) and a moving rack (72), the moving rod (71) is movably arranged in the opening (1021), and the moving rack (72) is connected with the rotating piece (60);

the end part of the moving rod (71) is provided with a connecting hole (711) used for being connected with the lock rod and a limiting part (712) used for limiting the moving distance of the moving rod (71);

an installation part (114) for installing a device is arranged on the left side of the end part of the bottom shell (11), the outward surface of the installation part (114) is a limiting surface (1141), and the limiting part (712) can be selectively limited on the limiting surface (1141);

the inward surface of the mounting part (114) is a positioning surface (1142), and after the upper cover (12) is mounted on the bottom shell (11), the upper cover (12) is limited by the positioning surface (1142).

5. The automatic lock-down device of an improved clutch mechanism as claimed in claim 4, wherein: the moving rod (71) is provided with a moving convex strip (713), and the bottom shell (11) and the upper cover (12) are provided with a moving groove (1022) at the opening (1021); the movement rib (713) is confined in the movement groove (1022).