TWM591641U - Time limit closing device of gas - Google Patents

Abstract

A gas time-limiting closing device includes a knob, the knob is detachably installed with a shaft fixing seat, the shaft fixing seat is more than two groups, and one of them is optionally installed on the knob, and the shaft fixing seat is provided for inserting and rotating the knob For the shaft hole of the shaft, the diameter of the shaft hole of each group of shaft fixing seats is different; the knob is installed with different shaft fixing seats to change the size of the shaft diameter of the rotating shaft that can be inserted into the knob. In the present invention, the shaft fixing seats with different shaft diameters of multiple sets of shaft holes are installed, and the knob is installed with different shaft fixing seats to change the shaft diameter size of the rotating shaft suitable for inserting the knob. Since the shaft fixing seat is provided with only one shaft hole, Therefore, its volume and the overall volume of the knob can be effectively reduced, and the use of materials can also be effectively reduced. In addition, the shaft diameter of the shaft hole of the shaft fixing seat can have more changes, and even the shape of the shaft hole can be changed. The scope is wider.

Description

Gas limited time closing device

The present invention relates to a gas time limit closing device.

Chinese Patent Document No. CN208596317U discloses a universal knob and a gas automatic closing machine using the same, including: a rotating body, a plurality of engaging parts are formed on the outer side of the casing, a selective sleeve hole displacement member is provided on the inner top, and the inner side Trigger with induction switch; terminal wheel is set to pass through the automatic closing body that engages the rotating body, and a circuit board and its electrically connected induction switch, small motor, drive element, battery, etc. are provided, in which the drive element The driving shaft passes through the push wheel and the intermediate wheel. When the small motor is started, the push wheel is engaged to drive the intermediate wheel to drive the terminal wheel, and then the rotary body can be driven to turn back to the closed position. When the small motor is not started, the intermediate wheel The wheel is not meshed and driven by the pusher wheel, but it shows a state of separation and idling, and then manually rotates the rotary body to adjust the size of the fire or switch the gas.

It is equipped with a selective sleeve hole displacement member on the knob to adapt to the rotation shaft assembly of different shaft diameters. Two shaft holes are provided on the selective sleeve hole shifter, which results in a larger overall volume and wastes more materials, and because the size of the shaft hole has been determined, it cannot be adapted to the rotation shaft assembly of other shaft diameters or other shaped shafts Diameter rotary shaft assembly.

In addition, due to the displacement of the selective sleeve hole displacement member through the length direction to change the position of the large and small shaft holes, when the selective sleeve hole displacement member and the knob are tightly assembled, the displacement operation is difficult and the displacement is not in place easily, resulting in The problem of poor concentricity between the knob and the rotating shaft occurs. If the selective sleeve hole displacement member and the knob are loosely assembled, it is easy to cause looseness with the knob.

The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and to provide a gas time-limiting closing device, which can reduce the volume of the knob, reduce the use of materials, and have a wider application range.

In order to achieve the purpose of the new model, the new gas limited-time closing device includes a knob, the knob can be detachably installed with a shaft fixing seat, the shaft fixing seat is more than two groups, and one of them is installed on the knob, the shaft fixing seat A shaft hole for inserting a rotating shaft into the knob is provided, and the diameter of the shaft hole of each group of shaft fixing seats is different; by installing different shaft fixing seats, the knob changes the shaft diameter size of the rotating shaft that can be suitable for inserting the knob.

After the shaft fixing seat and the knob are installed, the rotation centers of the knob and the shaft hole overlap.

A grip portion is formed on the front surface of the knob, and a cavity for mounting a shaft fixing seat is recessed on the back surface.

The side is provided with a time-limiting trigger.

The knob is provided with a clamping slot for inserting a shaft fixing seat, and the clamping slot is provided with an elastic buckle portion for clamping the shaft fixing seat to fix.

The gas time-limiting closing device further includes a host, which is provided with a motor and a rotating ring, the knob is installed in the middle of the rotating ring, the outer ring of the rotating ring is provided with a ring gear, and the motor (such as a motor) is driven by the ring gear connection.

The host is provided with an electric control board and a time-limiting trigger switch. The electric control board is electrically connected to the time-limiting trigger switch and a motor (such as a motor). The time-limiting trigger switch is provided with contact pins that abut the side of the knob; When the knob rotates in the opposite direction, the contact pin is touched, and the time-limit trigger switch returns a signal to the electric control board, so that the electric control board drives the motor to rotate in the positive direction, thereby driving the ring gear and the knob to rotate in the positive direction, until the knob touches the contact foot again, the time limit triggers The switch feeds back the signal to the electric control board again, so that the electric control board drives the motor to stop.

A first bevel gear is provided on the transmission shaft of the motor (such as a motor), and the first bevel gear is connected to the ring gear through the second bevel gear.

A first helical gear is provided on the outer bevel surface of the first bevel gear, a second helical gear is provided on the inner bevel surface of the second bevel gear, and a third helical gear is provided on the outer bevel surface. The gear is meshed with the ring gear, and the first bevel gear can be inserted into or removed from the second bevel gear through the elastic device; the motor rotates in the positive direction, under the tension of the elastic device, The first helical gear is relatively screwed into the second helical gear, so that the first bevel gear is screwed into the second bevel gear, and the first helical gear meshes with the second helical gear to drive the second bevel gear, the ring gear, The knob rotates in the positive direction, the knob rotates in the reverse direction, drives the ring gear and the second bevel gear to rotate in the reverse direction, the first helical gear rotates out of the second helical gear relatively, so that the first bevel gear moves from the second cone The shaped gear comes out and compresses the elastic device.

The elastic device is a spring against the first helical gear and the motor.

The beneficial effects of this new type are:

By setting shaft fixing seats with different shaft diameters of multiple sets of shaft holes, the knob is installed with different shaft fixing seats to change the shaft diameter size of the rotating shaft suitable for inserting the knob. Since the shaft fixing seat only has one shaft hole, it can be It can effectively reduce the volume and the overall volume of the knob, and can also effectively reduce the use of materials. In addition, the shaft diameter of the shaft hole of the shaft fixing seat can have more changes, and even the shape of the shaft hole can be changed, and the applicable range is more wide.

The present invention will be further described below with reference to the drawings and embodiments.

Referring to FIGS. 1 to 3, the novel gas time-limiting closing device includes a knob 1, a front portion of the knob 1 is formed with a grip portion 12, which is convenient for a user to grip the knob 1, and a cavity for mounting the shaft fixing seat 2 is recessed on the back The body 13 and the shaft fixing seat 2 are embedded in the cavity 13 to make the knob 1 more beautiful. The side is provided with a time-limiting trigger part 14 which can function with the time-limiting trigger switch 42 described below to realize the function of time-limit closing. Everyone can understand.

Among them, the knob 1 is detachably installed with a shaft fixing seat 2, the shaft fixing seat 2 is more than two groups, and one of the two is installed on the knob 1 (as shown in FIGS. 1 and 2), the shaft fixing seat 2 A shaft hole 21 for inserting the rotating shaft 11 into the knob 1 is provided, and the diameter of the shaft hole 21 of each group of shaft fixing seats 2 is different; the knob 1 is installed with different shaft fixing seats 2 to change the rotation suitable for inserting the knob 1 The size of the shaft diameter of the shaft 11.

Since only one shaft hole 21 is provided on each group of shaft fixing seats 2, it can effectively reduce its volume and the overall volume of the knob 1, and can also effectively reduce the use of materials. In addition, the shaft diameter of the shaft hole 21 of the shaft fixing seat 2 The size can have more changes, and even the shape of the shaft hole 21 can be changed, the applicable range is wider, and it is particularly suitable for the use of the non-standard rotating shaft 11, which can be understood by those skilled in the art. Moreover, by replacing the mold core used to form the shaft hole 21 on the mold for producing the shaft fixing seat 2, different shaft fixing seats 2 can be produced, which effectively improves the versatility of the mold and reduces the cost of the mold. Understandable.

Further, after the shaft fixing seat 2 and the knob 1 are installed, the rotation centers of the knob 1 and the shaft hole 21 overlap. Since the knob 1 is only fixed to a group of shaft fixing seats 2, the knob 1 and the shaft hole 21 can be guaranteed Concentricity.

Further, the knob 1 is provided with a clamping slot 15 for inserting the shaft fixing seat 2, and the clamping slot 15 is provided with an elastic buckle portion 151 for catching the shaft fixing seat 2 for fixing. In actual use, the knob and The shaft fixing seat 2 is assembled at one time (only dismantled during maintenance or replacement), so the shaft fixing seat 2 can be tightly inserted into the slot 15 and further fixed by the elastic buckle portion 151 to prevent the two from loosening.

Further, the gas time-limiting closing device further includes a host 3, which is provided with a motor 31 (such as a motor) and a rotating ring 32, the knob 1 is installed in the middle of the rotating ring 32, and the outer ring of the rotating ring 32 A ring gear 321 is provided, and a motor 31 (such as a motor) is drivingly connected to the ring gear 321 to realize the function of shutting off gas within a limited time, which can be understood by those skilled in the art.

Further, the host 3 is provided with an electric control board 4 and a time-limit trigger switch 42. The electric control board 4 is electrically connected to the time-limit trigger switch 42 and the motor 31. The time-limit trigger switch 42 is provided with a side of the knob 1 The contacting foot 421, specifically, the contacting foot 421 and the time-limiting trigger 14 abut against each other. The time-limiting trigger 14 of this embodiment is a groove structure, and the contact foot 421 elastically pushes into the time-limiting trigger 14; When the gas is turned off for a limited time, hold the grip 12 with your hand and rotate the knob 1 in the opposite direction (set the counterclockwise rotation to the opposite direction). At this time, the knob 1 touches the contact pin 421, and the time-limited trigger switch 42 returns a signal to the electric control board 4 After receiving the feedback signal, the electric control board 4 will drive the motor 31 (the delay drive mode can be used to avoid the user 31 rotating the knob 1 and the motor 31 starts immediately) to rotate in the positive direction (set the clockwise rotation of the motor to positive Direction rotation) to drive the ring gear 321 and the knob 1 to rotate in the positive direction until the time-limiting trigger 14 of the knob 1 touches the contact pin 421 again, the time-limiting trigger 42 again feeds back a signal to the electric control board 4 to drive the electric control board 4 The motor 31 is stopped, and at the same time, the present gas shut-off device for a limited time shuts off the gas transmission, which can be understood by those skilled in the art. By rotating the knob 1, the distance of the contact pin 421 away from the time-limiting trigger switch 42 is different, thereby realizing the difference in time-limiting length, which can be understood by those skilled in the art. In addition, a receiving device 41 can also be provided on the electric control board 4 so that it can receive external signals, and the emergency shutdown of the gas time-limiting closing device can be realized by remote control. For example, when the receiving device 41 receives the emergency closing signal, the electric control board 4 quickly The driving motor 31 rotates in the positive direction until the time-limiting trigger 14 of the knob 1 re-touches the contact pin 421, and the time-limiting trigger 42 returns the signal to the electric control board 4 again, so that the electric control board 4 drives the motor 31 to stop. Those skilled in the art Can be understood.

Further, a first bevel gear 33 is provided on the transmission shaft of the motor 31, and the first bevel gear 33 is drivingly connected to the ring gear 321 through the second bevel gear 34.

Further, a first helical gear 331 is provided on the outer bevel surface of the first bevel gear 33, a second helical gear 341 is provided on the inner bevel surface of the second bevel gear 34, and a first Three helical gears 342, the third helical gear 342 meshes with the ring gear 321, and the first bevel gear 33 can be inserted into or removed from the second bevel gear 34 through the elastic device, the The first bevel gear 33 is linearly movable on the rotating shaft of the motor 31, and the first bevel gear 33 can be driven by the rotating shaft of the motor 31; when the time limit starts, the motor 31 rotates in the positive direction (setting the motor 31 clockwise rotation is a positive direction), under the tension of the elastic device, the first helical gear 331 is relatively screwed into the second helical gear 341, so that the first bevel gear 33 is screwed into the second bevel gear 34, The first helical gear 331 meshes with the second helical gear 341 to drive the second bevel gear 34 (clockwise rotation), the ring gear 321 (clockwise rotation), and the knob 1 (clockwise rotation) to rotate in the positive direction; To increase the length of the time limit, you can further turn the knob 1 in the opposite direction. The knob 1 (counterclockwise) rotates in the opposite direction to drive the ring gear 321 (counterclockwise) and the second bevel gear 34 (counterclockwise). Turning in the opposite direction, the first helical gear 331 relatively rotates out of the second helical gear 341, so that the first bevel gear 33 is released from the second bevel gear 34 and compresses the elastic device. The technical solution can avoid forcibly twisting the motor 31 and damaging the motor 31 when the length of time is increased halfway through the time limit (the motor 31 has been started).

Further, the elastic device is a spring 35 that abuts between the first helical gear 331 and the motor 31.

The above-mentioned embodiments mentioned in this case are only for the convenience of explanation, but the meaning of this case cannot be limited in this way, that is, all kinds of altered designs according to the scope of the patent applications listed should be included in the scope of patents in this case.

1: knob 11: Rotating axis 12: Control Department 13: cavity 14: Limited time trigger 15: Card slot 151: Elastic buckle 2: Shaft fixing seat 21: Shaft hole 3: Host 31: Motor 32: Rotating ring 321: Ring gear 33: First bevel gear 331: first helical gear 34: Second bevel gear 341: Second helical gear 342: third helical gear 35: Spring 4: electric control board 42: Limited time trigger switch 421: Touch foot

Figure 1 is a perspective exploded view of the new model. Figure 2 is a perspective view of the new model. Figure 3 is a cross-sectional view of the new model.

1: knob

11: Rotating axis

12: Control Department

13: cavity

14: Trigger

15: Card slot

151: Elastic buckle

2: Shaft fixing seat

21: Shaft hole

Claims (10)

A gas time-limiting closing device, comprising a knob (1), the knob (1) is detachably installed with a shaft fixing seat (2), the shaft fixing seat (2) is more than two groups, and one of them is installed on the knob (1 ), the shaft fixing seat (2) is provided with a shaft hole (21) for inserting the rotating shaft (11) into the knob (1), the diameter of the shaft hole (21) of each group of shaft fixing seats (2) is different; The knob (1) is installed with different shaft fixing seats (2) to change the size of the shaft diameter of the rotating shaft (11) that can be inserted into the knob (1). The gas time-limiting closing device as described in item 1 of the patent application scope, wherein after the shaft fixing seat (2) and the knob (1) are installed, the rotation centers of the knob (1) and the shaft hole (21) overlap. A gas time-limiting closing device as described in item 1 of the patent application scope, wherein the front surface of the knob (1) forms a grip portion (12), and the back surface is recessed with a cavity (13) for mounting a shaft fixing seat (2). The gas time-limiting closing device according to item 1 of the patent application scope, wherein the side is provided with a time-limiting trigger (14). The gas time-limiting closing device according to item 1 of the patent application scope, wherein the knob (1) is provided with a clamping slot (15) for inserting a shaft fixing seat (2), and the clamping slot (15) is provided with a The elastic buckle portion (151) is fixed on the shaft fixing seat (2). As described in any one of items 1 to 5 of the patent application range, the gas time-limiting shutdown device further includes a host (3), and a motor (31) is provided in the host (3). A rotating ring (32), the knob (1) is installed in the middle of the rotating ring (32), the outer ring of the rotating ring (32) is provided with a ring gear (321), and the motor (31) is in drive connection with the ring gear (321) . As described in item 6 of the patent application scope, the gas time-limit closing device, wherein the host (3) is provided with an electric control board (4) and a time-limit trigger switch (42), the electric control board (4) and the time-limit trigger The switch (42) and the motor (31) are electrically connected, and the time-limit trigger switch (42) is provided with a contact foot (421) that abuts the side of the knob (1); when the knob (1) rotates in the opposite direction, the touch trigger The foot (421), the time limit trigger switch (42) feeds back the signal to the electric control board (4), so that the electric control board (4) drives the motor (31) to rotate in the positive direction, thereby driving the ring gear (321) and the knob (1) to Turn in the positive direction until the knob (1) touches the contact pin (421) again, the time-limited trigger switch (42) returns the signal to the electric control board (4) again, so that the electric control board (4) drives the motor (31) to stop. The gas time-limiting closing device as described in item 6 of the patent application scope, wherein the drive shaft of the motor (31) is provided with a first bevel gear (33), and the first bevel gear (33) passes through the second cone The gear (34) is drivingly connected with the ring gear (321). The gas time-limiting closing device as described in item 8 of the patent application scope, wherein the outer surface of the first bevel gear (33) is provided with a first helical gear (331) and a second bevel gear (34) A second helical gear (341) is provided on the inner bevel surface, and a third helical gear (342) is provided on the outer bevel surface. The third helical gear (342) meshes with the ring gear (321) for transmission. The gear (33) can be inserted into or removed from the second bevel gear (34) through the elastic device; the motor (31) rotates in the positive direction, under the tension of the elastic device, the first A helical gear (331) is relatively screwed into the second helical gear (341), so that the first bevel gear (33) is screwed into the second bevel gear (34), the first helical gear (331) and the second helical gear (341) Engage transmission to drive the second bevel gear (34), ring gear (321), and knob (1) to rotate in the positive direction; the knob (1) rotates in the reverse direction to drive the ring gear (321), The second bevel gear (34) rotates in the reverse direction, and the first helical gear (331) relatively rotates out of the second helical gear (341), so that the first bevel gear (33) is separated from the second bevel gear (34) Pull out and compress the elastic device. The gas time-limiting closing device as described in item 9 of the patent application range, wherein the elastic device is a spring (35) that abuts between the first helical gear (331) and the motor (31).

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