CN112081036A - Banister core and banister - Google Patents

Abstract

The present application is applicable to the technical field of gate equipment, and provides a gate core, including a bracket, a mandrel for hinged brackets, a driver for connecting the bracket, and a transmission assembly for connecting the bracket; Switching between the first state and the second state, when the mandrel is in the first state, it can be switched to the second state by rotating a preset angle; when the mandrel is in the first state, it can be connected to a horizontally placed gear lever, and the mandrel is in the first state In the state, it can be connected to a vertically placed gear lever. The driver can drive the mandrel to switch between the first state and the second state through the transmission assembly. When the mandrel is in the first state, the mandrel is connected to a gear lever that is horizontal in one direction. When the mandrel is switched to the second state, the gear lever is moved. Lift up; when the mandrel is connected to the vertical gear lever in the first state, the gear lever falls in the other direction when the mandrel is switched to the second state, and the gate movement has both a right-side lift lever and a left-side lift rod function.

Description

A gate movement and a gate

technical field

The present application relates to the technical field of gate equipment, in particular to a gate core and a gate.

Background technique

The road gate, also known as the car stopper, can realize the lifting and lowering of the pole under the control of the wireless remote control device or the parking lot management system. Vehicle passages in highway toll stations, parking lot system management, etc., used to manage the entry and exit of vehicles.

In some special cases, for example, some parking lots are equipped with tidal lanes, or park gates equipped with tidal lanes, or the barriers need to be installed on the right and left sides of the passage at the same time, the barriers need to have At the same time as the function of the drop bar from the right side, it also needs to have the function of the drop bar from the left side. However, the gate movement provided by the traditional solution cannot have both the functions of the right landing rod and the left landing rod. In the situation that needs to be reversed, sometimes the gate movement needs to be rotated 180°, and sometimes it needs to be redesigned and manufactured. Gate movement.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a gate movement, which aims to solve the technical problem that the traditional gate movement cannot have the functions of the right landing rod and the left landing rod.

The present application is realized in this way, a gate movement includes a bracket, a mandrel for hingedly connecting the bracket, a driver for connecting the bracket, and a transmission assembly for connecting the bracket; the driver can pass through the transmission assembly Driving the mandrel to switch between a first state and a second state, when the mandrel is in the first state, it can be switched to the second state by rotating a preset angle; the mandrel is in the first state In one state, a horizontally placed lever can be connected, and when the mandrel is in the first state, it can be connected with the vertically placed lever.

In an embodiment of the present application, the transmission ratio of the driver and the mandrel is greater than 1.

In an embodiment of the present application, the driver includes a first gear and a drive motor connected to the first gear and capable of driving the first gear to rotate; the transmission assembly includes a hinged bracket and is connected with the first gear to rotate. A second gear meshed with a gear, a rotating rod that rotates synchronously with the mandrel, and a connecting rod having opposite ends; the rotating rod includes a connecting portion for linking the mandrel, and connecting the links respectively The first support arm and the second support arm on both sides of the part; the second gear includes a hinge part for hinged with the bracket, and a gear part arranged along the outer edge of the hinge part; the connecting rod One end of the connecting rod is hinged with the gear part, and the other end of the connecting rod is hinged with the first support arm.

In an embodiment of the present application, a side of the connecting rod facing the hinge part is provided with an escape groove, and the escape groove is used for accommodating the hinge when the mandrel is in the first state department.

In an embodiment of the present application, an escape notch is provided on the outer edge of the gear portion, the escape notch has a first side wall and a second side wall, and the first side wall can be located where the mandrel is located. The second side wall can abut the first support arm when the mandrel is in the second state.

In an embodiment of the present application, the gate movement further includes a first buffer and a second buffer, the first buffer is disposed opposite to the first support arm, and the second buffer is connected to The second arms are oppositely arranged.

In an embodiment of the present application, the first buffer adopts a first spring, and the second buffer adopts a second spring.

In an embodiment of the present application, the first buffer is arranged on a side of the first support arm that faces away from the second gear, and the second buffer is arranged on a side of the second support arm. the side away from the second gear; the gate movement further includes a third spring arranged on the side of the first arm that faces away from the first buffer, and a third spring arranged on the second A fourth spring on the side of the arm facing away from the second buffer.

In an embodiment of the present application, one end of the mandrel is provided with a connecting boss for connecting with the gear lever, and the number of the connecting boss is two or more.

Another object of the present application is to provide a barrier comprising the barrier movement described above.

Implementing a gate movement provided by any embodiment of the present application has at least the following beneficial effects:

In the gate core provided by the embodiments of the present application, the driver can drive the mandrel to switch between the first state and the second state through the transmission assembly, and the mandrel is connected to the gear lever placed horizontally in one direction when in the first state, When the mandrel is switched to the second state, the gear lever is lifted; when the mandrel is in the first state, the gear lever is connected vertically, and the gear lever falls in the other direction when the mandrel is switched to the second state. In this way, the gate movement has both the functions of the right landing rod and the left landing rod. There is no need to rotate the gate movement or configure a symmetrically arranged gate movement, and only need to switch the specific connection method of the shift rod and the mandrel. , the gear lever can be switched between the working state of dropping to the left and dropping to the right.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of a gate core provided by an embodiment of the present application;

2 is an exploded schematic diagram of a gate core provided by an embodiment of the present application;

3 is a schematic structural diagram of the gate core provided by an embodiment of the present application when it is in a first state;

FIG. 4 is a schematic structural diagram of the gate movement provided by an embodiment of the present application when it is in a second state.

The details of the symbols involved in the above drawings are as follows:

1-bracket; 2-mandrel; 21-connecting boss; 3-driver; 31-first gear; 32-drive motor; 4-transmission assembly; 41-second gear; 411-hinged part; 412-gear part ; 4121-avoidance gap; 42-rotating rod; 421-first arm; 422-second arm; 423-connection; 43-link; 431-avoidance groove; 51-first buffer; A spring; 512-first guide rod; 52-second buffer; 521-second spring; 522-second guide rod; 6-speed lever.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly or indirectly located on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. Terms "top", "bottom", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outer", etc. The indicated orientation or position is based on the orientation or position shown in the drawings, which is only for the convenience of description, and should not be construed as a limitation on the technical solution. The terms "first" and "second" are only used for the purpose of description, and should not be understood as indicating or implying relative importance or implying indicating the number of technical features. "Plurality" means two or more, unless expressly specifically limited otherwise.

In order to illustrate the technical solutions described in the present application, a detailed description is given below with reference to the specific drawings and embodiments.

Please refer to FIG. 2 to FIG. 4 , an embodiment of the present application provides a gate movement, including a bracket 1 for providing support and fixing the relative positional relationship between the components, a hinged bracket 1 and a bracket The mandrel 2 to which the rod 6 is directly connected, the drive 3 that is connected to the bracket 1 and used to power the lowering and raising of the gear lever 6, and the transmission assembly 4 that is connected to the bracket 1; the drive 3 can drive the mandrel 2 through the transmission assembly 4 Switching between the first state and the second state, when the mandrel 2 is in the first state, it can be switched to the second state by rotating a preset angle; when the mandrel 2 is in the first state, it can be connected to the The gear lever 6 placed horizontally on the right side, when the mandrel 2 is switched to the second state, the gear lever 6 is lifted upward; when the mandrel 2 is in the first state, it can also be connected to the vertically placed gear lever 6, when the mandrel 2 is in the first state 2 When switching to the second state, the shift lever 6 falls in the left horizontal direction in FIGS. 3 and 4 .

Specifically, the gate movement provided in this embodiment works as follows:

Please refer to FIGS. 1 to 4 , the bracket 1 provides support for the mandrel 2 , the driver 3 and the transmission assembly 4 , the gear lever 6 is connected to one end of the mandrel 2 , and the gear lever 6 rotates with the rotation of the mandrel 2 . turn. Specifically, the driver 3 is connected to the mandrel 2 through the transmission assembly 4, and the power output by the driver 3 is transmitted by the transmission assembly 4, and finally becomes the rotational torque of the mandrel 2, and drives the shift lever 6 to rise or control the shift lever 6 to fall. The driver 3 can drive the mandrel 2 to switch between the first state and the second state through the transmission assembly 4. When the mandrel 2 rotates clockwise to the first state, the horizontally placed gear lever 6 (the gear lever 6 is facing Fig. 3 and The right side in Figure 4) is connected to the mandrel 2, so that the mandrel 2 is rotated counterclockwise until it is in the second state, the lever 6 is lifted upward until the lever 6 is placed vertically; When the clockwise is rotated to the first state, connect the vertically placed gear lever 6 to the mandrel 2, so that the mandrel 2 can be rotated counterclockwise until it is in the second state, the gear lever 6 is in the other direction (Fig. 3). and left in Figure 4) down.

It should be understood that the relevant descriptions about clockwise and counterclockwise in the various embodiments of the present application are only to illustrate the working principle and technical effect of the gate movement provided by the various embodiments of the present application in conjunction with FIG. 3 and FIG. 4 , It should not be construed as a limitation on the scope of protection of the application. Clockwise and counterclockwise rotation logic is reversed when viewed from the opposite perspective of FIGS. 3 and 4 .

Implementing the gate core provided by this embodiment has at least the following beneficial technical effects:

In the gate movement provided in this embodiment, the driver 3 can drive the mandrel 2 to switch between the first state and the second state through the transmission assembly 4. When the mandrel 2 is in the first state, the mandrel 2 is connected to a gear that is horizontally placed in one direction. lever 6, when the mandrel 2 is switched to the second state, the gear lever 6 is lifted; when the mandrel 2 is in the first state, it is connected to the vertically placed gear lever 6, then when the mandrel 2 is switched to the second state The lever 6 falls in the other direction. In this way, the gate movement has both the functions of the right landing rod and the left landing rod. There is no need to rotate the gate movement or configure a symmetrically arranged gate movement. The connection method can make the shift lever 6 switch between the working states of falling to the left and falling to the right.

Referring to FIGS. 1 to 4 , in one embodiment of the present application, one end of the mandrel 2 is provided with a connection boss 21 for connecting with the gear lever 6 , and the number of the connection bosses 21 is two or more. The connection bosses 21 are equal to or more than two, which can ensure that the rotational torque of the mandrel 2 can be transmitted to the gear lever 6, so that the driver 3 can drive the mandrel 2 and the gear lever 6 to rotate together through the transmission assembly 4; and through the corresponding The connecting holes (not shown in the figure) on the gear lever 6 are arranged so that the mandrel 2 can be connected to the horizontal or vertical gear lever 6 when it rotates clockwise to the first state, thereby facilitating the switching of the gate movement. working status.

As a specific solution of this embodiment, correspondingly, a connecting hole corresponding to the shape of the connecting boss 21 is provided at the position opposite to the mandrel 2 of the gear lever 6 , and the connecting hole may be a through hole or a blind hole, and the connection The number of holes is greater than or equal to the number of connection bosses 21 . For example, when the number of connecting bosses 21 is two, the number of connecting holes can be three and arranged in a zigzag shape, and the number of connecting holes can also be four and arranged in a cross shape; the number of connecting bosses 21 When it is four and is arranged in a cross shape, the number of connecting holes can also be four and is also arranged in a cross shape. Of course, it is also feasible that the number of the connecting boss 21 and the connecting hole can be one, the connecting hole is square or cross-shaped, and the shape of the connecting boss 21 corresponds to the connecting hole.

Referring to FIGS. 1 to 4 , in an embodiment of the present application, the transmission ratio of the driver 3 and the mandrel 2 is greater than 1. That is, the drive 3 and the mandrel 2 are decelerated, and the angular velocity output by the driver 3 is greater than the angular velocity of the mandrel 2 rotating.

The advantage of this is that the rotational speed of the mandrel 2 can be reduced and the control accuracy of the rotational speed of the mandrel 2 by the driver 3 can be improved. At the same time, the output torque of the driver 3 can be improved, that is, the rotational force output by the driver 3 to the mandrel 2 can be increased. , to ensure that the driver 3 can lift the shift lever 6 , and to avoid the moment generated by the gravity of the shift lever 6 itself from affecting the control accuracy of the driver 3 .

Referring to FIGS. 1 to 4 , in an embodiment of the present application, the driver 3 includes a first gear 31 and a drive motor 32 connected to the first gear 31 and capable of driving the first gear 31 to rotate; the transmission assembly 4 includes a hinged bracket 1 and a second gear 41 meshing with the first gear 31, a rotating rod 42 that rotates synchronously with the mandrel 2, and a connecting rod 43 having opposite ends; the rotating rod 42 includes a connecting portion 423 for linking the mandrel 2, and The first arm 421 and the second arm 422 on both sides of the connecting portion 423 are respectively connected; the second gear 41 includes a hinge portion 411 for hinged connection with the bracket 1 , and a gear portion 412 arranged along the outer edge of the hinge portion 411 One end of the connecting rod 43 is hinged with the gear part 412, and the other end of the connecting rod 43 is hinged with the first arm 421.

For convenience of description, in each embodiment of the present application, the mandrel 2 rotates around the first hinge axis, the second gear 41 rotates around the second hinge axis, and the end of the connecting rod 43 hinged with the gear portion 412 rotates around the third hinge axis, The end of the connecting rod 43 that is hinged with the first arm 421 rotates around the fourth hinge axis; at the same time, in the embodiments of the present application, the first state and the second state refer to the state where the gate movement is located as a whole, the first state The state and the second state are embodied in the rotational state of the spindle 2 and the second gear 41 . In this embodiment, the first hinge axis, the second hinge axis, the third hinge axis and the fourth hinge axis are parallel to each other, and the distance between the adjacent axes is constant (the distance between the first hinge axis and the second hinge axis Constant, the distance between the second hinge axis and the third hinge axis is constant, the distance between the third hinge axis and the fourth hinge axis is constant, and the distance between the fourth hinge axis and the first hinge axis is constant), the position of the first hinge axis and the second hinge axis Fixed, the positions of the third hinge axis and the fourth hinge axis move with the rotation of the second gear 41; the drive motor 32 drives the second gear 41 to rotate through the first gear 31, which is essentially equivalent to controlling the third hinge axis to revolve around the first gear 41. The two hinge axes rotate. Since the distance between the adjacent hinge axes is constant, the drive motor 32 can drive the first arm 421 to rotate around the first hinge axis through the connecting rod 43, thereby driving the rotating rod 42 and the mandrel. 2 and the gear lever 6 rotate synchronously around the first hinge shaft to control the rise and fall of the gear lever 6 .

Referring to FIGS. 1 to 4 , in an embodiment of the present application, a side of the connecting rod 43 facing the hinge portion 411 is provided with an escape groove 431 , and the escape groove 431 is used to accommodate the mandrel 2 when the mandrel 2 is in the first state Hinged portion 411 .

When the driving motor 32 drives the second gear 41 to rotate through the meshing of the first gear 31 and the second gear 41, the third hinge axis rotates around the second hinge axis. When the hinge axis rotates to the side of the second hinge axis that faces away from the fourth hinge axis, the connecting rod 43 itself will limit the further rotation of the second gear 41; One side of the part 411 is provided with an escape groove 431, and the escape groove 431 is configured to be able to accommodate the hinge part 411 when the mandrel 2 rotates clockwise to the first state, which can avoid the rotation of the third hinge axis around the second hinge axis. The connecting rod 43 touches the hinge shaft prematurely and forms a limit, thereby expanding the rotation range of the second gear 41 , which is beneficial to improve the transmission ratio between the second gear 41 and the mandrel 2 .

Referring to FIGS. 1 to 4 , as a specific solution of this embodiment, the connecting rod 43 may be in the shape of a broken line, and an escape groove 431 is formed on the side of the connecting rod 43 facing the hinge portion 411 ; and the connecting rod 43 is arranged on the first On the side of the second gear 41 facing away from the bracket 1 , the connecting rod 43 is arranged on the side of the rotating rod 42 facing away from the bracket 1 . The mandrel 2 needs to provide a considerable turning moment to the gear lever 6 to be able to lift the gear lever 6 and support the gear lever 6 to be replaced and lowered, and the second gear 41 and the rotating rod are arranged between the connecting rod 43 and the bracket 1 The position is helpful to reduce the distance between the connecting rod and the bracket 1 and improve the stability of the hinge between the mandrel 2 and the bracket 1; it also reduces the distance between the gear part 412 of the second gear 41 and the bracket 1 , to improve the stability of the hinge between the second gear 41 and the bracket 1 .

Referring to FIGS. 1 to 4 , in an embodiment of the present application, a side opposite to the mandrel 2 of the gear portion 412 is provided with an avoidance notch 4121 , and the avoidance notch 4121 has a first side wall and a second side wall. One side wall can abut the second arm 422 when the mandrel 2 is in the first state, and the second side wall can abut the first arm 421 when the mandrel 2 is in the second state.

In this embodiment, the outer edge of the gear portion 412 of the second gear 41 is provided with an escape notch 4121 , and the notch has a first side wall and a second side wall. When the second gear 41 rotates clockwise to the first state, the second support arm 422 abuts the first side wall, thereby preventing the second gear 41 from rotating excessively clockwise; when the second gear 41 rotates counterclockwise to the second In the state, the first arm 421 abuts against the second side wall, thereby preventing the second gear 41 from rotating excessively in the counterclockwise direction. The second side wall forms a limit for the first support arm 421, and the first side wall forms a limit for the second support arm 422, thereby realizing the limit of the rotation angle of the mandrel 2 and the lever 6, and can avoid the first The second gear 41 rotates to a position where the first gear 31 cannot mesh with the second gear 41 .

Referring to FIGS. 1 to 4 , in an embodiment of the present application, the gate movement further includes a first buffer 51 and a second buffer 52 , and the first buffer 51 is disposed opposite to the first support arm 421 On one side of the second gear 41 , the second buffer 52 is disposed on the side of the second arm 422 away from the second gear 41 .

Specifically, both the first buffer 51 and the second buffer 52 are used to buffer the impulse of the rotating rod 42 before the mandrel 2 rotates to the limited position; the first buffer 51 and the second buffer 52 may be They are respectively arranged above and below the first support arm 421 , they can also be respectively set below and above the second support arm 422 , or they can be respectively set above the first support arm 421 and the second support arm 422 It can also be arranged below the second support arm 422 and the first support arm 421 respectively. The first buffer 51 and the second buffer 52 only need to be able to buffer the rotating rod 42 before the second gear 41 rotates to the first state and before the second gear 41 rotates to the second state, respectively; In the embodiments, the first buffer 51 and the second buffer 52 are respectively disposed above the first support arm 421 and the second support arm 422 as an example for description.

Referring to FIGS. 1 to 4 , as a preferred solution of this embodiment, the first buffer 51 adopts the first spring 511 , and the second buffer 52 adopts the second spring 521 . One end of the first spring 511 away from the first arm 421 is connected to the bracket 1 , and one end of the second spring 521 away from the second arm 422 is connected to the bracket 1 .

In this way, when the driving motor 32 drives the second gear 41 to rotate clockwise through the first gear 31 and is about to reach the first state, the first arm 421 abuts the first spring 511 , and the first spring 511 acts on the first arm 421 . At the same time of buffering, a part of the elastic potential energy will be stored, and this part of the elastic potential energy will be released when the driving motor 32 starts to drive the second gear 41 to rotate counterclockwise through the first gear 31; When the second gear 41 rotates counterclockwise and is about to reach the second state, the second arm 422 abuts the second spring 521 , and the second spring 521 buffers the second arm 422 and stores a part of the elastic potential energy. Part of the elastic potential energy will be released when the driving motor 32 starts to drive the second gear 41 to rotate clockwise through the first gear 31 .

The advantage of this is that the first spring 511 and the second spring 521 can buffer the first support arm 421 and the second support arm 422 respectively, and at the same time can also reduce the energy consumption of the driving motor 32, and can counteract the upward movement. Lifting the shift lever 6 has a boosting effect, and avoids the situation that the drive motor 32 cannot lift the shift lever 6 due to the excessive torque generated by the gravity of the shift lever 6 itself.

Referring to FIGS. 1 to 4 , as a specific solution of this embodiment, the first buffer 51 includes a first guide rod 512 and a first spring 511 disposed around the first guide rod 512 . One end of the arm 421 is connected to the end of the first guide rod 512 facing the first support arm 421 , and the end of the first spring 511 away from the first support arm 421 is connected to the bracket 1 , which is opposite to the first guide rod 512 A first guide rod hole (not shown in the figure) is provided at the position of the first guide rod 512, and one end of the first guide rod 512 away from the first support arm 421 protrudes from the bracket 1; the second buffer 52 includes a second guide rod 522 and a surrounding The second spring 521 provided on the two guide rods 522, the end of the second spring 521 facing the second support arm 422 is connected to the end of the second guide rod 522 facing the second support arm 422, the second spring One end of the support arm 422 is connected to the support 1 , a second guide rod hole (not shown in the figure) is provided at the position of the support 1 opposite to the second guide rod 522 , and one end of the second guide rod 522 away from the second support arm 422 Extend bracket 1. The first guide rod 512 and the second guide rod 522 are provided, which can orient the first spring 511 and the second spring 521 respectively. The first spring 511 and the second spring 521 are used as buffer springs inside the gate movement. The force it receives is often relatively large, and arranging the first guide rod 512 and the second guide rod 522 to orient them respectively can ensure that the postures of the first spring 511 and the second spring 521 do not change.

In an embodiment of the present application, the first buffer 51 is disposed on the side of the first arm 421 that faces away from the second gear 41 , and the second buffer 52 is disposed on the second arm 422 away from the second gear 41 . The gate movement also includes a third spring (not shown in the figure) disposed on the side of the first arm 421 facing away from the first buffer 51, and a third spring (not shown in the figure) disposed on the back of the second arm 422 A fourth spring (not shown) to one side of the second buffer 52 .

Specifically, the third and fourth springs are always stretched. The advantage of this is that with the extension of the gear lever 6, the moment generated by the gravity of the gear lever 6 increases in a square level, and the third spring and the fourth spring are provided, which can pull the first arm 421 and the second arm downward respectively. The support arm 422 provides assistance when the driving motor 32 drives the rotating arm to start rotating clockwise and counterclockwise, so as to avoid the situation where the output torque of the driving motor 32 is insufficient to lift the gear lever 6 when the gear lever 6 itself has a large gravity.

Another object of the present application is to provide a barrier comprising the barrier movement described above.

The above descriptions are only optional embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims (10)

1. A gate core, characterized in that it comprises a bracket, a mandrel for hingedly connecting the bracket, a driver for connecting the bracket, and a transmission assembly for connecting the bracket; the driver can be driven by the transmission assembly The mandrel is switched between a first state and a second state, and can be switched to the second state by rotating a preset angle when the mandrel is in the first state; the mandrel is in the first state In the first state, the lever can be connected to a horizontally placed gear lever, and the mandrel can be connected to the vertically placed lever when the mandrel is in the first state. 2 . The gate movement of claim 1 , wherein the transmission ratio of the driver and the mandrel is greater than 1. 3 . 3. The gate movement of claim 2, wherein the driver comprises a first gear and a drive motor connected to the first gear and capable of driving the first gear to rotate; the transmission assembly comprises a second gear that is hinged to the bracket and meshed with the first gear, a rotating rod that rotates synchronously with the mandrel, and a connecting rod having opposite ends; the rotating rod includes a connecting rod for the mandrel a connecting part, and a first support arm and a second support arm respectively connecting two sides of the connecting part; the second gear includes a hinge part for hinged with the bracket, and an outer edge along the hinge part The gear part is provided; one end of the connecting rod is hinged with the gear part, and the other end of the connecting rod is hinged with the first support arm. 4 . The gate movement of claim 3 , wherein a side of the connecting rod facing the hinge portion is provided with an escape groove, and the escape groove is used for when the mandrel is in the position where the mandrel is located. 5 . The hinge portion is accommodated in the first state. 5 . The gate movement of claim 3 , wherein the outer edge of the gear portion is provided with an escape notch, and the escape notch has a first side wall and a second side wall, and the first side the wall is capable of abutting the second arm when the mandrel is in the first state and the second side wall is capable of abutting the first arm when the mandrel is in the second state . 6. The gate movement according to any one of claims 3-5, characterized in that, the gate movement further comprises a first buffer and a second buffer, the first buffer and the The first support arm is arranged oppositely, and the second buffer is arranged opposite to the second support arm. 7 . The gate movement of claim 6 , wherein the first buffer adopts a first spring, and the second buffer adopts a second spring. 8 . 8 . The gate movement of claim 6 , wherein the first buffer is disposed on a side of the first arm that faces away from the second gear, and the second buffer is 8 . is arranged on the side of the second arm away from the second gear; the gate movement also includes a third a spring, and a fourth spring disposed on the side of the second arm facing away from the second buffer. 9. The gate core according to any one of claims 1-5, wherein one end of the mandrel is provided with a connecting boss for connecting with the gear lever, and the connecting boss has a The number is two or more. 10. A gate, characterized in that it comprises the gate movement according to any one of claims 1-9.

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