KR200452407Y1 - gearbox having panic function - Google Patents

Abstract

The present invention relates to a gearbox having a panic function to protect the drive circuit and the internal reduction gear of the motor built in the gearbox by preventing the rotation shaft of the gearbox from rotating when a rotational force is applied from the outside. Specifically, the cam shaft is installed on the rotation shaft of the main body constituting the gearbox, and the cam shaft is configured to raise or lower the cam. When the rotation shaft rotates, the cam rises to perform rotation with the driven gear, thereby transmitting rotational force. The rotational force started from the driven gear is not transmitted to the rotation shaft of the gearbox so as to protect the motor drive circuit and the internal reduction gear inside the gearbox.

Gearbox, Panic, Door Lock

Description

Gearbox with panic function

The present invention relates to a gearbox having a panic function to protect the drive circuit and the internal reduction gear of the motor built in the gearbox by preventing the rotation shaft of the gearbox from rotating when a rotational force is applied from the outside.

The present invention relates to a gearbox having a panic function, wherein the driving gear is formed when the shaft is rotated by forming a recess in the periphery of the rotating shaft of the main body constituting the gearbox and forming a protrusion or inserting a steel ball into the driving gear coupled to the rotating shaft. Gearbox which protects the motor drive circuit and the internal reduction gear inside the gearbox by raising the driven gear to transfer the rotational force by following the driven gear and preventing the rotational force started from the driven gear from being transmitted to the rotation shaft of the gearbox. It is about.

Conventional gearboxes used for opening and closing means, such as digital door locks, when the motor itself rotates to transmit the rotational force to the latch of the opening and closing means of the digital door lock, when manually operating the latching force is transmitted to the rotation axis of the gearbox If not, it can protect the drive circuit of the motor connected to the rotating shaft and the internal reduction gear built into the gearbox. Such functions are commonly referred to as panic functions, and gearboxes having various types of panic functions have already been released.

Since the panic function of the gearbox complicates the structure of the gearbox, the cost of the gearbox increases, and therefore, a gearbox having a panic function of economical and simple structure is required.

The present invention provides a simple and economical structure of a gearbox with a panic function that protects the drive circuit of the motor built in the gearbox and the internal reduction gears by preventing the rotation shaft of the gearbox from rotating even when a rotational force is applied from the outside. The task is to provide a structure.

The object of the present invention described above is a main body formed with one or more recesses around a portion through which the rotating shaft driven by a motor passes, and is disposed on an upper portion of the recessed portion through the rotating shaft to rotate integrally with the rotating shaft. A drive gear is formed circumferentially, and a lower portion of the drive gear has a protrusion formed in a shape corresponding to the depression of the main body so that the drive side gear can be inserted into the depression of the main body. A driven side gear is formed at the bottom, and an upper side gear is formed at the top to transmit the rotational force by the clamp, and is installed to penetrate the rotating shaft, and the driven gear and the driving gear and the idler are formed so as not to rotate integrally with the rotating shaft. Installed between the drive gear and the driven gear to separate the driven gears from each other It is achieved by a gearbox having a panic function comprising an elastic member.

In order to achieve the above object, it is preferable that the inclined portion of the main body is formed with an inclined surface in order to smooth the departure of the protrusion.

In addition, in order to achieve the above object, it is preferable that the cross section of the rotating shaft is a shape in which a part of the circle is cut, and the idle part of the driven gear is a through hole of a circular cross section.

The object of the present invention described above is a main body formed with one or more recesses around a portion through which the rotating shaft driven by a motor passes, and is disposed on an upper portion of the recessed portion through the rotating shaft to rotate integrally with the rotating shaft. A drive gear is formed circumferentially and a drive gear having a drive gear side depression is formed at a circumferential position corresponding to the depression of the main body, and a steel ball is inserted into the depression of the main body under the drive gear. And a driven side gear that is engaged with the drive side gear of the drive gear is formed at the bottom, and an upper side gear is formed at the top to transfer the rotational force with the clamp, and is installed through the rotation shaft and rotates integrally with the rotation shaft. To separate the driven gear and the driving gear from the driven gear so as not to By the gearbox having a panic function, including an elastic member provided between the driving gear and the driven gear is achieved.

The subject of the present invention is a built-in motor and the main body is provided with a rotating shaft connected to the motor, the cam shaft is formed on the rotating shaft to rotate integrally with the rotating shaft, the cam curve is formed on both sides of the cam curve A stopper protruding downward is formed, a driving side connecting projection is formed at the upper side, a through portion is formed in the center, and a cam installed above the cam shaft of the rotation shaft through the through portion, and the cam A driven side connecting protrusion that is caught by a driving side connecting protrusion is formed at a lower portion, and an upper gear having an upper gear for transmitting rotational force by a latch at the upper portion of the cam and the driven gear to space the cam and the driven gear from each other. And a spring installed between the cam curves, each of which has a bottom dead center formed on both sides of one top dead center. Prompt the rotation of the cam and is raised and lowered, the cam shaft when the cam shaft rotation in a state stuck to the stopper is achieved by a gear box having a panic function, it characterized in that the cam is rotated.

In order to achieve the above object, two cam curves are formed symmetrically, and the cam shaft is preferably protruded on both sides of the rotation shaft through the rotation shaft.

In addition, a plurality of the driving side connecting projections of the cam and the driven side connecting projections of the driven gear are each formed symmetrically, and a cam side stopper is formed between each of the driving side connecting projections, and the driven side connecting projections respectively. Between the driven side rests that are flat may be formed.

The cam has a straight anti-rotation groove formed in a vertical direction around the cam, and at a point adjacent to the cam of the main body, the cam is fitted into the anti-rotation groove of the cam to prevent the cam from rotating. It is preferable that an anti-rotation stopper is elastically supported.

The anti-rotation stopper is preferably composed of a fitting portion fitted to the anti-rotation groove of the cam and a support piece fixed to the main body and extending to both sides of the fitting portion.

According to the gearbox having a panic function according to the present invention, the gears transmitting the rotational force from the motor are formed of a drive gear and a driven gear that can be separated and combined with each other, form a depression in the body of the gearbox, and form a protrusion in the drive gear. Or by inserting the steel ball is effective to implement a selective bite of the drive gear and the driven gear in a simple configuration.

In addition, since the protrusions of the drive gear and the depressions of the main body are constituted in pairs, and the protrusions and the depressions are disposed 180 degrees apart in a circumference, the gearbox is digitally rotated 180 degrees in each direction. The latches of the opening and closing means such as the door locks open and lock. Therefore, it is possible to selectively transmit the rotational force without providing a separate external force.

In addition, since the depression of the main body is formed by the inclined surfaces, the protrusion of the drive gear can be separated from the depression smoothly.

In addition, since the drive gear side depression of the drive gear is formed to have an inclined portion, the steel balls can be easily inserted into and released from the drive gear side depression.

Hereinafter, with reference to the accompanying drawings will be described the configuration of a gearbox having a panic function according to a preferred embodiment of the present invention. The same reference numerals are used for constructing the same function.

1 is an exploded perspective view showing a gearbox having a panic function according to a preferred embodiment of the present invention, Figure 2 is a perspective view showing the bottom of the drive gear of the gearbox having a panic function according to a preferred embodiment of the present invention to be. As shown in Figure 1 and 2, the gear box having a panic function (hereinafter referred to as the "gear box") according to a preferred embodiment of the present invention is the main body 1, the main body of the rotating shaft 4 protrudes outward Drive gear 10 coupled to the lower portion of the rotary shaft 4 of (1), driven gear 20 coupled to the upper portion of the drive gear 10 in the rotary shaft 4, the driven gear 20 and the drive gear It is configured to include an elastic spring 30 having elasticity provided between the (10).

The main body 1 has a motor (not shown) and a reduction gear (not shown), and the rotating shaft 4 protrudes through one side of the upper surface 2, and is based on the center of the rotating shaft 4. A pair of depressions 3 recessed downward on both sides of the periphery of the rotation axis 4 are formed symmetrically. Each depression 3 is formed of a pair of inclined surfaces which are inclined downward and upward in the circumferential direction. Since the recess 3 is formed of inclined surfaces, the protrusion 12 formed on the driving gear 10 to be described later may easily detach the recess 3.

The rotating shaft 4 of the main body 1 has a shape in which a cross section cuts both sides of a circle, and includes a pair of curved portions 5 and a pair of flat portions 6, and a screw to which a screw is coupled at the top thereof. The hole 7 is formed. Due to the shape of the rotating shaft 4 having the curved portion 5 and the flat portion 6, the driving gear 10 to be described later slides in the vertical direction and at the same time the driving gear 10 is rotated when the rotating shaft 4 rotates. It can rotate together integrally.

As shown in FIG. 2, the drive gear 10 has a pair of protrusions having driving side gears 11 formed at an upper portion thereof, and a shape corresponding to a recessed shape of the recessed portion 3 of the main body 1 at a lower portion thereof. (12) are formed symmetrically. Protrusions 12 are one surface of the triangular prism is attached to the bottom surface of the drive gear (10). Therefore, two surfaces of the triangular prism form inclined surfaces with respect to the bottom surface of the drive gear 10. The through part 13 of the shape corresponding to the cross-sectional shape of the said rotating shaft 4 is formed in the center of the drive gear 10. As shown in FIG.

The driven gear 20 has a lower side in which the driven side gears 21 geared with the driving side gears 11 are formed in a circumferential direction and in the center thereof in a diameter corresponding to the maximum diameter of the rotating shaft 4. Through-hole 22 is formed in the form of a through-hole of a circular cross-section, the upper part is induced by opening and closing the bevel gear of the opening and closing guide lever (not shown) to operate the latch (not shown) of the opening and closing means such as a digital door lock to be described later Upper side gears 23 of the bevel gear structure for transmitting the rotational force to the lever are formed. The driven gear 20 is installed on the rotary shaft 4 while the idle unit 22 is inserted into the rotary shaft 4 above the drive gear 10.

The restraint screw 35 is coupled to the screw hole 7 formed at the upper end of the rotary shaft 4 above the driven gear 20. The restraint screw 35 serves to prevent the driven gear 20 from escaping above the rotating shaft 4.

The elastic spring 30 is installed to surround the circumference of the rotary shaft 4 and is located between the drive gear 10 and the driven gear 20. The elastic spring 30 spaces apart the drive gear 10 and the driven gear 20 from each other.

Figure 3 is a side view showing a state in which the drive gear of the gearbox having a panic function according to a preferred embodiment of the present invention, Figure 4 is a drive gear of the gearbox having a panic function according to a preferred embodiment of the present invention It is a side view which shows the state which descended. As shown in FIGS. 3 and 4, when the rotation shaft 4 is rotated by the motor of the gearbox, the driving gear 10 rotates integrally with the rotation shaft 4. Initially, the protruding portion 12 of the drive gear 10 is inserted into the recessed portion 3 of the main body 1. When the driving gear 10 starts to rotate, the protruding portion 12 of the drive gear 10 is the main body. Ascending on the inclined surface of the depression 3 of (1) and rotating at the same time to move away from the depression (3). Therefore, the protrusion 12 of the drive gear 10 which has moved away from the depression 3 of the main body 1 comes into contact with the upper surface of the main body 1 and the height of the protruding portion 12 of the drive gear 10. The drive gear 10 ascends above the rotational shaft 4 by much. When the driving gear 10 rises, the driving side gears 11 of the driving gear 10 are bitten with the driven side gears 21 of the driven gear 20. At this time, the elastic spring 30 installed between the drive gear 10 and the driven gear 20 is compressed by the lifting amount of the drive gear 10. In this state, the rotational force transmitted from the motor to the rotating shaft 4 is transmitted to the driven gear 20 via the drive gear 10, and the opening and closing induction of the upper gear 23 and the opening and closing means of the upper part of the driven gear 20 is opened. When the bevel gear 41 of the lever 40 is crawled, the opening and closing induction lever 40 is rotated, and when the opening and closing induction lever 40 is rotated, the latch 45 caught by the opening and closing induction lever 40 is moved. .

When the rotation shaft 4 of the drive gear 10 rotates by 180 degrees, the motor stops. When the driving gear 10 is rotated 180 degrees while the protrusion 12 of the drive gear 10 is inserted into the recess 3 of the main body 1, the protrusion 12 of the drive gear 10 is the main body 1. It will be located directly above the depression (3) of. As shown in FIG. 4, since the driving gear 10 is pressed downward by the elastic spring 30, the protrusion 12 of the driving gear 10 is inserted into the recess 3 of the main body 1. The drive gear 10 is lowered again. When the drive gear 10 descends, the gear bite between the driven gear 20 and the drive gear 10 is released. Since the projections 12 of the drive gear 10 and the depressions 3 of the main body 1 are each disposed at a circumference of 180 degrees, the drive gear 10 is rotated by 180 degrees. 10, the protrusion 12 is inserted into the depression 3 of the main body 1 from the state in which the protrusion 12 rotates away from the depression 3 and is inserted into the depression 3 again. do.

The process of locking the digital door lock (not shown) by moving the latch 45 of the opening and closing means to the right and the process of opening the digital door lock by moving the latch 45 to the left are only different in the rotation direction of the rotation shaft 4 of the gearbox. When the drive gear 10 is raised to bite with the driven gear 20 and the drive gear 10 is lowered, the process of releasing the drive gear 10 and the driven gear 20 is performed in the same manner.

As shown in Figure 4, the user is connected to the opening and closing induction lever 40 of the digital door lock to operate the manual handle (not shown) that can rotate the opening and closing induction lever 40 manually opening and closing induction lever 40 When the rotation rotates the induction lever 40 and the driven gear 20 is geared. However, even if the driven gear 20 rotates, the rotating shaft 4 of the gearbox inserted into the idle part 22 of the driven gear 20 does not rotate, and the drive gear 10 is driven through the elastic spring 30. Since it is spaced apart from the (20), the rotation of the driven gear 20 is not transmitted to the drive gear (10). Therefore, when the manual handle is rotated, the latch 45 moves, but the rotation shaft 4 of the gearbox does not rotate. Therefore, it is possible to prevent the motor or the circuit for controlling the motor and the gears (not shown) for deceleration from being damaged in the main body 1 connected to the rotary shaft 4.

In the embodiment of the present invention has been described that the depression is formed in the main body of the gear box and the protrusion is formed in the drive gear that rotates integrally with the rotation shaft of the gear box, but the present invention is not limited thereto, and the protrusion is formed in the main body Even if the recess is formed in the drive gear, the drive gear is raised and lowered at the time of rotation of the rotating shaft, so that it is possible to form a protrusion on the main body and a recess on the drive gear.

5 is an exploded perspective view showing a gear box having a panic function according to another embodiment of the present invention, Figure 6 is a perspective view showing a lower portion of the drive gear of FIG. As shown in Figure 5 and 6, the gearbox having a panic function according to another embodiment of the present invention is exposed to the main body 1, the upper portion of the main body 1 and transmits a rotational force through a motor (not shown) The receiving rotary shaft 5a, the bush 9, the steel ball 2, the drive gear 10a, the elastic spring 30, the driven gear 20 and the restraint screw 35.

The main body 1 has motors (not shown) and electric gears (not shown) therein, and hemispherical recesses 3a are formed on both sides of a circumference of a portion through which the rotating shaft 5a for power transmission passes. have.

A steel ball 2 made of metal or synthetic resin is placed in the recessed portion 3a of the main body 1. The steel ball 2 is inserted into the recessed part 3a of the main body 1 by about half the depth of the height of the steel ball 2, and is settled.

The rotating shaft 5a has a columnar shape having straight lines formed on both sides thereof, and a rotating engaging portion 6a for transmitting rotational force to a driving gear 10a to be described later is formed in the middle of the vertical direction, and the rotating engaging portion 6a is formed. The upper part of the) is formed with an outer diameter less than or equal to the minimum diameter of the engaging portion (6a) and the extension portion 8 is formed with a coupling hole (7a) formed on the top. A bush 9 is formed around the extension 8 of the rotating shaft 5a. The bush 9 reduces the wear of the extension 8 and the driven gear 20 and facilitates rotation.

The drive gear 10a corresponds to the recessed portion 3a of the main body 1 such that the driving side gears 11 are formed at the upper portion thereof and overlap the recessed portion 3a of the main body 1 at the lower portion thereof. The drive gear side depression 12a is formed in a position. The drive gear side depression 12a is formed in a circumferentially inclined portion so that the drive gear 10a gently leaves the steel ball 2 or the steel ball 2 is the drive gear side depression of the drive gear 10a. 12a) to be inserted smoothly so that the rising and falling of the drive gear (10a) is a continuous and smooth operation. In the center of the drive gear (10a) is formed through portion 13 of the through-hole structure having a straight portion on both sides to engage with the rotation engaging portion (6a) of the rotating shaft (5a) to be described later.

In the driven gear 20, the driven side gears 21 geared with the driving side gears 11 are formed in a circumferential shape, and the upper side gears 23 are formed in the upper portion thereof. In the center of the driven gear 20, the idle part 22 which is a circular hole through which the extension part 8 of the rotating shaft 5a is formed is formed.

The elastic spring 30 is installed to surround the rotation shaft 5a between the drive gear 10a and the driven gear 20. The elastic spring 30 spaces apart the drive gear 10a and the driven gear 20 from each other.

The engagement state of the gearbox with panic function is as follows.

Steel balls 2 are placed in the recessed portion 3a of the main body 1, and the penetrating portion 13 of the drive gear 10a is attached to the rotation catching portion 6a of the rotary shaft 5a on the upper portion of the main body 1. Is coupled to the driving gear 10a. The extension part 8 extending upward through the through part 13 of the drive gear 10a is inserted with a bush 9 having a circular tube structure and is provided with an elastic spring ring 30 to surround the bush 9. This is installed. The driven gear 20 is installed on the drive gear 10a so that the idle part 22 of the driven gear 20 passes through the bush 9 surrounding the extension 8 of the rotary shaft 5a. Restraint screw having a flange having a diameter larger than the inner diameter of the idle portion 22 in the engaging hole 7a of the extension portion 8 of the rotary shaft 5a exposed through the idle portion 22 of the driven gear 20 ( 35) are combined.

The size of the drive gear side depression 12a is formed such that the depth at which the steel ball 2 is inserted into the drive gear side depression 12a is greater than the height of the drive side gear 11 of the drive gear 10a. Accordingly, the gear bites of the drive gear 10a and the driven gear 20 are released when the drive gear 10a is lowered while the steel ball 2 is inserted into the drive gear side depression 12a of the drive gear 10a. .

7 is a side view showing a state in which the drive gear of the gearbox having a panic function according to another embodiment of the present invention is lowered, Figure 8 is a drive gear of the gearbox having a panic function according to another embodiment of the present invention 7 is a side view showing an elevated state, and as shown in FIGS. 7 and 8, the drive gear 10a of the gearbox is initially separated from the driven gear 20 by an elastic spring, and at this time, The steel ball 2 settled in the recessed part 3a is in the state inserted into the drive gear side recessed part 12a of the drive gear 10a.

When the rotating shaft starts to rotate, the drive gear side depression 12a of the drive gear 10a leaves the steel ball 2, and the steel ball 2 holds the bottom of the drive gear 10a to drive the gear 10a. Ascends to gear bite with the driven gear (20). Therefore, the rotational force from the rotating shaft 5a is transmitted to the driven gear 20.

When the drive gear 10a rotates 180 degrees and the drive gear side depression 12a reaches the position of the steel ball 2 again, the steel ball 2 is inserted into the drive gear side depression 12a and the drive gear 10a. ) Is lowered to release the gear bite with the driven gear (20).

When using the steel balls 2 to control the lifting of the drive gear 10a in the gearbox having a panic function according to the present invention, the bottom surface and the steel balls 2 of the drive gear 10a when the drive gear 10a rotates. Since there is a rolling contact, there is an advantage that the wear of the drive gear 10a hardly occurs.

9 is an exploded perspective view showing the configuration of a gear box having a panic function according to another embodiment of the present invention, Figure 10 is connected to the rotary shaft of the gear box having a panic function according to another embodiment of the present invention Fig. 11 is a side view of the cam shown in Figs. 9 and 10, and Fig. 12 is a bottom view of the cam of Fig. 11.

9 and 10, the gearbox having a panic function according to the present embodiment is connected to the main body 100 in which a motor (not shown) and gears (not shown) are built and gears through the motor. Cam 120 and the rotating shaft 110, which is fitted to the cam shaft 112 and the rotating shaft 110, the cam shaft 112 is formed, and is mounted on the cam 120 and disposed above the cam 120 and the rotating shaft 110 It is configured to include a spring 140 is fitted in the cam 120 and installed between the driven gear 130.

The rotating shaft 110 is fixed by inserting the cam shaft 112 of the pin structure in the transverse direction at the intermediate point in the longitudinal direction, and the cam shaft 112 protrudes to both sides of the rotating shaft 110, respectively.

As shown in FIGS. 9 to 12, the cam 120 is inserted into the rotation shaft 110 through the center thereof, and a pair of cam curves 122 having the same shape are formed at the lower portion of the cam 120. Both ends of each cam curve 122 are formed with stoppers 124 protruding downward from both ends of the cam curve 122. On the upper portion of the cam 120, four drive side connecting projections 126 are formed symmetrically on the circumference, and a section between the drive side connecting projections 126 between the cam side stop portions 128 is formed. .

The cam curve 122 of the lower part of the cam 120 has a center top dead center, and gradually descends to both sides with respect to the top dead center, and an end point contacting each stopper 124 is a bottom dead center. Thus, one cam curve 122 has one top dead center and two bottom dead centers.

The driven gear 130 is inserted into the rotating shaft 110 through the center thereof, and the lower portion of the driven gear 130 is caught by the driving side connecting protrusion 126 of the cam 120 to receive the rotational force. The driven side connecting projections 132 are formed symmetrically on the circumference, and the section between each driven side connecting projections 132 is formed with the driven side rests 134 of the planar structure. The upper portion of the driven gear 130 is composed of a bevel gear 136 for transmitting a rotational force to the latch (not shown).

The spring 140 is fitted between the rotation shaft 110 and is installed between the cam 120 and the driven gear 130. The spring 140 functions to space the cam 120 and the driven gear 130.

In addition, the bush 113 is installed around the rotating shaft 110 to prevent abrasion of the rotating shaft 110 rotating in the main body 100, and a bolt hole 114 is formed at the upper end of the rotating shaft 110 and the rotating shaft 110. The bolt 150 is coupled to the bolt hole 114 of the upper end of the rotary shaft 110 from the upper portion of the driven gear 130 is inserted into the rotatably connecting the drive gear to the upper end of the rotary shaft 110. The washer 152 installed between the bolt 150 and the rotating shaft 110 functions to block the rotation force so that the bolt 150 is prevented from loosening when the driven gear 130 rotates. A bush 154 is installed inside the driven gear 130 to prevent wear of the rotating shaft 110.

FIG. 13 is a side view illustrating a process of raising or lowering a cam during rotation of a rotating shaft in a gearbox having a panic function according to another embodiment of the present invention. As shown in FIG. 13, when the rotating shaft 110 is rotated by the driving of the motor of the gearbox, the cam shaft 112 fixed to the rotating shaft 110 moves along the cam curve 122 of the cam 120. The force of the spring 140 is overcome and the cam 120 is pushed up. When the cam shaft 112 comes into contact with the stopper 124 at the end of the cam curve 122, the stopper 124 is pushed to raise the cam 120. In the state, the cam 120 is rotated. When the cam 120 is raised, the driving side connecting protrusion 126 of the cam 120 reaches a position that can be engaged with the driven side connecting protrusion 132 of the driven gear 130, and in this state, the cam 120 When rotated, the driving side connecting protrusion 126 is caught by the driven side connecting protrusion 132 of the driven gear 130 to rotate the driven gear 130. When the driven gear 130 rotates, the opening / closing lever of the opening / closing means that is engaged with the bevel gear 136 of the driven gear 130 rotates to close the latch of the opening / closing means of the digital door lock.

After closing the latch of the opening and closing means of the digital door lock, if the motor of the gearbox drives the rotating shaft 110 in the opposite direction, the cam shaft 112 is separated from the stopper 124 so as to be centered on the cam curve 122 of the cam 120. At this time, the cam 120 is lowered by the force of the spring 140 and the cam 120 and the driven gear 130 are separated.

In the state where the cam 120 and the driven gear 130 are separated, the manual handle of the digital door lock is rotated by hand, and only the driven gear 130 is rotated and the driven gear 130 and the driven gear 130 are rotated even when the opening and closing induction lever connected to the manual handle is rotated. Since the rotational force is not transmitted to the separated cam 120 and the rotating shaft 110, the rotational force is not transmitted to the motor of the main body 100 of the gearbox.

The process of opening the latch of the digital door lock is the opposite of the above-described process of closing the latch of the digital door lock and the rotation direction of the rotary shaft 110 and the same principle is applied. This is because two cam curves 122 and two stoppers 124 are formed symmetrically.

The function of the cam side stopper 128 of the cam 120 and the driven side stopper 134 of the driven gear 130 is to make the rotation angle of the driven gear 130 approximately 90 degrees less than the rotation angle of the cam 120. . That is, the driving side connecting protrusion 126 of the cam 120 pushes the driven side connecting protrusion 132 of the driven gear 130 in the clockwise direction, and then the cam 120 and the driven gear 130 are separated from each other. When the 120 rises and rotates in a counterclockwise direction, after the cam 120 rotates by approximately 90 degrees, the driving side connecting protrusion 126 of the cam 120 is driven by the driven side connecting protrusion 132 of the driven gear 130. ) To transmit the rotational force.

14 is an exploded perspective view of a gearbox having a panic function according to a fourth embodiment of the present invention, FIG. 15 is a perspective view of a gearbox having a panic function according to a fourth embodiment of the present invention, and FIG. 4 is a perspective view illustrating a cam 170 of a gear box having a panic function according to the fourth embodiment of the present invention.

As shown in Figure 13 to 16, the gearbox having a panic function according to the fourth embodiment of the present invention is the same as the configuration of the gearbox according to the third embodiment in most of the configuration, except that the cam ( There is a difference in that the anti-rotation groove 172 is formed around the 170 and the anti-rotation stopper 160 is installed on the upper surface of the main body 101 to prevent rotation of the cam 170.

An incision 103 is formed at one side of the circumferential wall 102 formed on the upper surface of the main body 101.

The anti-rotation stopper 160 is provided next to the circumferential wall 102 of the upper surface of the main body 101. The anti-rotation stopper 160 is formed of an elastic wire that is elastically deformed, the center of which is bent to protrude forward, the front end is formed with a pointed fitting portion 162 and the support piece for elastically supporting the fitting portion 162 on both sides ( 164 is formed. The end of each support piece 164 is wound in a circular shape, and one support piece 164 is fitted in the fitting protrusion 105 formed on the upper surface of the main body 101 with the wound part being circular. The circular wound portion is fixed to the upper surface of the main body 101 by bolts (106). The anti-rotation stopper 160 is elastically supported so that the support pieces 164 on both sides are fixed to the main body 101 so that the fitting portion 162 can be moved forward and backward.

Two rotation preventing grooves 172 are formed symmetrically 180 degrees around the lateral circumference of the cam 170. Each anti-rotation groove 172 is formed in a straight line along the vertical direction. Since the other structure of the cam 170 is the same as the cam 170 in 3rd Embodiment, it abbreviate | omits description.

When the cam 170 is positioned so that the anti-rotation groove 172 of the cam 170 faces the fitting portion 162 of the anti-rotation stopper 160, the fitting portion 162 of the anti-rotation stopper 160 is cam. It is fitted into the rotation preventing groove 172 of 170. If the cam 170 rotates over the resistance of the anti-rotation stopper 160 while the fitting portion 162 of the anti-rotation stopper 160 is fitted into the anti-rotation groove 172 of the cam 170, the anti-rotation spotter may be rotated. The fitting portion 162 is separated from the rotation preventing groove 172 of the cam 170.

Hereinafter will be described the operation of the gearbox having a panic function according to a fourth embodiment of the present invention. The operation of the gearbox according to the fourth embodiment of the present invention is mostly the same as or similar to the operation of the gearbox according to the third embodiment of the present invention, except that the anti-rotation stopper 160 of the cam 170 is in a specific operation step. There is a difference in preventing rotation.

17 is a side view illustrating a process in which a cam is raised or lowered during rotation of a rotating shaft in a gearbox having a panic function according to a fourth embodiment of the present invention. Referring to FIGS. 13 and 17, when the cam shaft 112 is positioned between two stoppers 174 formed under the cam 170, an anti-rotation stopper is disposed in the anti-rotation groove 172 of the cam 170. The fitting portion 162 of the 160 is fitted.

When the shaft rotates and the camshaft 112 rotates, the camshaft 112 moves toward the stopper 174 while sliding on the inclined surface 173 forming the cam 170 curve of the lower portion of the cam 170. . When the cam shaft 112 moves on the inclined surface 173 below the cam 170, the cam 170 is raised while the cam 170 is prevented from being rotated by the anti-rotation stopper 160. Since the rotation preventing groove 172 of the cam 170 is formed in a straight line along the vertical direction, the fitting portion 162 of the rotation preventing stopper 160 only varies the contact point while the cam 170 is raised. It is still fitted in the anti-rotation groove 172.

When the cam shaft 112 reaches the stopper 174 at the bottom of the cam 170, the cam 170 is raised to the highest height, and the top of the cam 170 approaches the bottom of the driven gear 130 It is in a state capable of transmitting rotational force. When the camshaft 112 continues to rotate, the camshaft 112 pushes the stopper 174 below the cam 170, and the fitting portion 162 of the anti-rotation stopper 160 is the cam 170. The rotation of the cam can no longer prevent the rotation preventing groove 172 of the cam 170 to leave and allow the cam 170 to rotate. When the cam 170 rotates, the fitting portion 162 of the anti-rotation stopper 160 slides along the circumference of the cam 170. When the power source of the motor is reversed for a short time (mS), the rotating shaft 110 is rotated. The cam shaft 112 rotates in the opposite direction. At this time, the stopper 174 of the lower portion of the cam 170 that is in contact with the cam shaft 112 is in a state where the rotation is stopped, and the cam 170 is stopped. Moving downward by the spring 140 is separated from the driven gear 130. In this case, the anti-rotation stopper 160 may be located in the anti-rotation groove 172 of the cam 170 according to the reduction ratio of various mechanism mechanisms, and may slide around the cam 170 and then may It may be located at a point.

That is, the anti-rotation stopper 160 cams 170 in the process of sliding the inclined surface 173 of the lower portion of the cam 170 before the cam shaft 112 reaches the stopper 174 of the lower portion of the cam 170. Only the rotation of the cam shaft 112 is prevented by the camshaft 112 pushing the stopper 174 below the cam 170 to rotate the cam 170.

The anti-rotation stopper 160 serves to prevent the cam 170 from rotating by the friction force when the cam shaft 112 moves in contact with the inclined surface 173 of the lower portion of the cam 170. ) To ensure that it rises or falls.

Gear box having a panic function according to the present invention is applied to the opening and closing means of various uses using a motor, for example, can be used for opening and closing means of various devices, including digital door lock, gas circuit breaker, motorcycle lock.

1 is an exploded perspective view showing a gearbox having a panic function according to a first embodiment of the present invention,

Figure 2 is a perspective view showing the bottom of the drive gear of the gearbox having a panic function according to the first embodiment of the present invention,

Figure 3 is a side view showing a state in which the drive gear of the gear box having a panic function according to the first embodiment of the present invention,

Figure 4 is a side view showing a state in which the drive gear of the gear box having a panic function according to the first embodiment of the present invention is lowered,

5 is an exploded perspective view showing a gearbox having a panic function according to a second embodiment of the present invention,

6 is a perspective view showing a lower portion of the drive gear of FIG.

7 is a side view illustrating a state in which a drive gear of a gear box having a panic function according to a second embodiment of the present invention is raised;

8 is a side view showing a state in which the drive gear of the gear box having a panic function according to the second embodiment of the present invention is lowered,

9 is an exploded perspective view showing the configuration of a gearbox having a panic function according to a third embodiment of the present invention,

10 is a perspective view illustrating a coupling state of components connected to a rotating shaft of a gearbox having a panic function according to a third embodiment of the present invention;

FIG. 11 is a side view of the cam shown in FIGS. 9 and 10;

12 is a bottom view of the cam of FIG. 11,

FIG. 13 is a side view illustrating a process in which a cam is raised or lowered during rotation of a rotating shaft in a gearbox having a panic function according to a third embodiment of the present invention;

14 is an exploded perspective view of a gearbox having a panic function according to a fourth embodiment of the present invention,

15 is a perspective view of a gearbox having a panic function according to a fourth embodiment of the present invention,

16 is a perspective view illustrating a cam 170 of a gearbox having a panic function according to a fourth embodiment of the present invention,

17 is a side view illustrating a process in which a cam is raised or lowered during rotation of a rotating shaft in a gearbox having a panic function according to a fourth embodiment of the present invention.

Claims (5)

A main body having a built-in motor and a rotating shaft connected to the motor; A camshaft formed on the rotating shaft and integrally rotating with the rotating shaft; A cam curve is formed at a lower portion, and stoppers protruding downward on both sides of the cam curve are formed, a driving side connecting protrusion is formed at an upper portion thereof, a through portion is formed at a center thereof, and the through A cam installed up the camshaft; A driven gear having a driven side connecting protrusion that is caught by the driving side connecting protrusion of the cam, and an upper gear having a top gear for transmitting rotational force to a latch at an upper portion thereof; And And a spring installed between the cam and the driven gear to space the cam and the driven gear from each other. The cam curve has a bottom dead center formed on each side based on one top dead center, And the cam is raised or lowered when the cam shaft rotates, and the cam rotates when the cam shaft rotates while the cam shaft is caught by the stopper. The method of claim 1, Two cam curves are formed symmetrically, and the cam shaft penetrates through the rotation shaft and has a panic function, characterized in that protruding to both sides of the rotation shaft. The method of claim 1, The plurality of driving side connecting protrusions of the cam and the driven side connecting protrusions of the driven gear are each formed symmetrically, A gearbox having a panic function, characterized in that a cam side stopper is formed in a plane between each of the driving side connecting projections and a driven side stopper in a plane is formed between each of the driven side connecting projections. The cam of claim 1, wherein a straight rotation preventing groove is formed around the cam in a vertical direction, and the cam is fitted into the rotation preventing groove of the cam to prevent rotation of the cam. Gear box having a panic function, characterized in that the anti-rotation stopper is elastically supported so as to enable the retreat. The gearbox having a panic function according to claim 4, wherein the anti-rotation stopper comprises a fitting portion fitted to the anti-rotation groove of the cam and a support piece extending to both sides of the fitting portion and fixed to the main body. .

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