CN210607058U

CN210607058U - Gas time-limited closing device

Info

Publication number: CN210607058U
Application number: CN201921700439.XU
Authority: CN
Inventors: 王建平
Original assignee: Jinhua Calderoni Technology Co ltd
Current assignee: Jinhua Calderoni Technology Co ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-05-22
Anticipated expiration: 2029-10-11

Abstract

The utility model relates to a gas time-limited closing device, which comprises a knob, wherein the knob is detachably provided with more than two groups of shaft fixing seats, and one of the shaft fixing seats is selected and installed on the knob; the knob is provided with different shaft fixing seats to change the shaft diameter of the rotating shaft which can be suitable for being inserted into the knob. The utility model discloses a set up the axle fixing base of the axle footpath variation in size in multiunit shaft hole, the knob is installed with the axle footpath size that changes the rotation axis that can be fit for inserting the knob with the axle fixing base of difference, because the axle fixing base only sets up a shaft hole, therefore can effectively reduce the whole volume of its volume and knob, still can effectively reduce the use of material, in addition, the axle footpath size in the shaft hole of axle fixing base can have more changes, can change the shape in shaft hole even, and applicable scope is wider.

Description

Gas time-limited closing device

Technical Field

The utility model relates to a gas is closing device in time limit.

Background

Chinese patent document No. CN208596317U discloses a universal knob and an automatic gas shutoff machine using the same, comprising: the outer side surface of the shell of the rotary body is provided with a plurality of clamping parts, the inner top of the rotary body is provided with a selective trepanning displacement piece, and the inner side surface of the rotary body is provided with a trigger piece of the inductive switch; the automatic closing body is sleeved with the terminal wheel to be clamped with the rotary body in a penetrating manner, the circuit board, the inductive switch, the small motor, the driving assembly, the battery and the like are arranged in the automatic closing body, the inductive switch, the small motor, the driving assembly and the battery are electrically connected with the circuit board, a driving shaft of the driving assembly passes through the pushing wheel and the intermediate wheel, the pushing wheel is meshed with and drives the intermediate wheel to drive the terminal wheel when the small motor is started, the rotary body can be driven to rotate back to a closing position, the intermediate wheel is not meshed with and driven by the pushing wheel when the small motor is not started, a separation idling state is presented, and the rotary body is manually rotated to adjust the size of.

The knob is provided with a selective trepanning displacement piece to adapt to the assembly of rotating shafts with different shaft diameters. Two shaft holes are formed in the selective trepanning displacement piece, so that the whole size of the selective trepanning displacement piece is large, more materials are wasted, and the selective trepanning displacement piece cannot adapt to the assembly of rotating shafts with other shaft diameters or the assembly of rotating shafts with other special-shaped shaft diameters due to the fact that the size of the shaft holes is determined.

In addition, because the position of selectivity cover hole shift spare through length direction displacement in order to change big or small shaft hole, when selectivity cover hole shift spare was assembled with the knob tightly, the difficult and easy condition that appears the displacement not in place of displacement operation leads to appearing the poor problem of knob and rotation axis concentricity, if selectivity cover hole shift spare and knob assembly when pine, cause easily with knob not hard up phenomenon.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of above-mentioned prior art existence, and provide a closing device when gas limit, it can reduce the knob volume, reduce the material and use, and application scope is wider.

The purpose of the utility model is realized like this:

a gas time-limited closing device comprises a knob, wherein shaft fixing seats are detachably mounted on the knob, more than two groups of shaft fixing seats are selected and mounted on the knob, shaft holes for inserting rotating shafts into the knob are formed in the shaft fixing seats, and the hole diameters of the shaft holes of each group of shaft fixing seats are different; the knob is provided with different shaft fixing seats to change the shaft diameter of the rotating shaft which can be suitable for being inserted into the knob.

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

The front surface of the knob forms a holding part, and the back surface of the knob is concavely provided with a cavity for mounting the shaft fixing seat.

And a time-limited trigger part is arranged on the side surface of the knob.

The knob is provided with a clamping groove for inserting the shaft fixing seat, and the clamping groove is provided with an elastic buckling part for buckling the shaft fixing seat to fix.

The gas time-limited closing device further comprises a host, a motor and a rotating ring are arranged in the host, the knob is installed in the middle of the rotating ring, a ring gear is arranged on the outer ring of the rotating ring, and the motor is in transmission connection with the ring gear.

The main machine is provided with an electric control board and a time-limited trigger switch, the electric control board is electrically connected with the time-limited trigger switch and the motor, and the time-limited trigger switch is provided with a contact pin which is abutted against the side part of the knob; when the knob rotates in the reverse direction, the contact pin is touched, the time-limited trigger switch feeds back a signal to the electric control board, so that the electric control board drives the motor to rotate in the positive direction, the ring gear and the knob are driven to rotate in the positive direction until the contact pin is touched again by the knob, and the time-limited trigger switch feeds back a signal to the electric control board again, so that the electric control board drives the motor to stop.

And a transmission shaft of the motor is provided with a first bevel gear, and the first bevel gear is in transmission connection with the ring gear through a second bevel gear.

The outer conical surface of the first conical gear is provided with a first helical gear, the inner conical surface of the second conical gear is provided with a second helical gear, the outer conical surface of the second conical gear is provided with a third helical gear, the third helical gear is in meshing transmission with the ring gear, and the first conical gear can be inserted into the second conical gear or separated from the second conical gear through an elastic device; the motor rotates in the positive direction, the first bevel gear is screwed into the second bevel gear relatively under the tension action of the elastic device, the first bevel gear is screwed into the second bevel gear, the first bevel gear and the second bevel gear are in meshing transmission, the second bevel gear, the ring gear and the knob are driven to rotate in the positive direction, the knob rotates in the reverse direction, the ring gear and the second bevel gear are driven to rotate in the reverse direction, the first bevel gear is screwed out of the second bevel gear relatively, and the first bevel gear is separated from the second bevel gear and compresses the elastic device.

The elastic device is a spring which is abutted between the first bevel gear and the motor.

The utility model has the advantages that:

through the axle fixing base that the axle diameter size is different that sets up the multiunit shaft hole, the knob is installed with the axle diameter size that changes the rotation axis that can be fit for inserting the knob with the axle fixing base of difference, because the axle fixing base only sets up a shaft hole, therefore can effectively reduce the whole volume of its volume and knob, still can effectively reduce the use of material, in addition, the axle diameter size in the shaft hole of axle fixing base can have more changes, can change the shape in shaft hole even, applicable scope is wider.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

Fig. 1 is an exploded view of a knob, a shaft fixing seat and a rotating shaft according to an embodiment of the present invention.

Fig. 2 is an assembly view of the knob, the shaft fixing seat and the rotating shaft according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1-3, the gas time-limited closing device comprises a knob 1, wherein a holding part 12 is formed on the front surface of the knob 1, so that a user can hold the knob 1 conveniently, a cavity 13 for installing a shaft fixing seat 2 is concavely arranged on the back surface of the knob, the shaft fixing seat 2 is concealed in the cavity 13, so that the knob 1 is more attractive, a time-limited trigger part 14 is arranged on the side surface of the knob, and the time-limited trigger part can act with a time-limited trigger switch 42 described below to realize the time-limited closing effect, and all the technical personnel in the.

The rotary knob comprises a rotary knob 1, a shaft fixing seat 2 and a shaft fixing seat, wherein the rotary knob 1 is detachably provided with the shaft fixing seat 2, more than two groups of the shaft fixing seats 2 are arranged, one group of the shaft fixing seat 2 is arranged on the rotary knob 1 (as shown in fig. 1 and 2), the shaft fixing seat 2 is provided with a shaft hole 21 for inserting a rotary shaft 11 into the rotary knob 1, and the diameters of the shaft holes 21 of each group of the; the knob 1 is provided with different shaft fixing seats 2 so as to change the shaft diameter size of a rotating shaft 11 which can be suitable for being inserted into the knob 1.

Because only set up a shaft hole 21 on every group axle fixing base 2, therefore can effectively reduce its volume and the whole volume of knob 1, still can effectively reduce the use of material, in addition, the axle diameter size in shaft hole 21 of axle fixing base 2 can have more changes, can change the shape in shaft hole 21 even, and the applicable scope is wider, especially is fit for the use of non-standard rotation axle 11, and technical personnel in the field all can understand. Moreover, different shaft fixing seats 2 can be produced by replacing the mold cores for forming the shaft holes 21 on the mold for producing the shaft fixing seats 2, the mold universality is effectively improved, the mold cost is reduced, and the technical personnel in the field can understand the mold.

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 are overlapped, and the knob 1 is only fixed with the group of shaft fixing seats 2, so that the concentricity of the knob 1 and the shaft hole 21 can be ensured.

Further, be equipped with on the knob 1 and be used for the 2 male draw-in grooves 15 of axle fixing base, be equipped with on the draw-in grooves 15 and be used for detaining axle fixing base 2 and detain portion 151 with fixed elasticity, during the in-service use, the knob is disposable assembly (only dismantlement when maintaining or changing) with axle fixing base 2, consequently can let axle fixing base 2 insert in draw-in grooves 15 and detain portion 151 further fixed through elasticity more tightly, prevents that both from appearing not hard up phenomenon.

Further, the gas time-limited closing device further comprises a main machine 3, a motor 31 and a rotating ring 32 are arranged in the main machine 3, the knob 1 is installed in the middle of the rotating ring 32, a ring gear 321 is arranged on the outer ring of the rotating ring 32, and the motor 31 is in transmission connection with the ring gear 321 to achieve the gas time-limited closing function, and the main machine can be understood by those skilled in the art.

Further, an electric control board 4 and a time-limited trigger switch 42 are arranged on the main frame 3, the electric control board 4 is electrically connected with the time-limited trigger switch 42 and the motor 31, the time-limited trigger switch 42 is provided with a contact pin 421 abutting against the side of the knob 1, specifically, the contact pin 421 abuts against the time-limited trigger portion 14, the time-limited trigger portion 14 of the embodiment is a groove structure, and the contact pin 421 elastically abuts into the time-limited trigger portion 14; when the gas time limit closing function needs to be started, the holding part 12 is held by a hand, the knob 1 is made to rotate in a reverse direction (anticlockwise rotation is set as the reverse direction), at the moment, the knob 1 touches the contact pin 421, the time limit trigger switch 42 feeds back a signal to the electric control board 4, the electric control board 4 receives the feedback signal and then drives the motor 31 to rotate in the forward direction (the motor is set to rotate in the forward direction in a time delay driving mode, so that the motor 31 is prevented from being started immediately when the knob 1 is rotated by the hand), the ring gear 321 and the knob 1 are driven to rotate in the forward direction until the time limit trigger part 14 of the knob 1 touches the contact pin 421 again, the time limit trigger switch 42 feeds back a signal to the electric control board 4 again, the electric control board 4 drives the motor 31 to stop, meanwhile, the gas time limit closing device closes the gas delivery. The distance of the contact foot 421 from the time-limited trigger switch 42 is different by rotating the knob 1, so as to realize the difference of the time-limited length, which can be understood by those skilled in the art. In addition, a receiving device 41 can be further arranged on the electronic control board 4, so that the receiving device can receive an external signal, and the gas time-limited closing device can be closed emergently in a remote control mode, for example, when the receiving device 41 receives an emergency closing signal, the electronic control board 4 rapidly drives the motor 31 to rotate in the positive direction until the time-limited trigger part 14 of the knob 1 triggers the contact pin 421 again, and the time-limited trigger switch 42 feeds back a signal to the electronic control board 4 again, so that the motor 31 is driven by the electronic control board 4 to stop, which can be understood by those skilled in the art.

Further, a transmission shaft of the motor 31 is provided with a first bevel gear 33, and the first bevel gear 33 is in transmission connection with the ring gear 321 through a second bevel gear 34.

Furthermore, a first bevel gear 331 is arranged on the outer conical surface of the first bevel gear 33, a second bevel gear 341 is arranged on the inner conical surface of the second bevel gear 34, a third bevel gear 342 is arranged on the outer conical surface, the third bevel gear 342 is in meshing transmission with the ring gear 321, and the first bevel gear 33 can be inserted into the second bevel gear 34 or disengaged from the second bevel gear 34 through an elastic device; when the time limit begins, the motor 31 rotates in the positive direction (the clockwise rotation of the motor is set to be the positive direction rotation), under the tension of the elastic device, the first bevel gear 331 is screwed into the second bevel gear 341 relatively, so that the first bevel gear 33 is screwed into the second bevel gear 34, the first bevel gear 331 and the second bevel gear 341 are in meshing transmission, thereby driving the second bevel gear 34 (clockwise rotation), the ring gear 321 (counterclockwise rotation), and the knob 1 (counterclockwise rotation) to rotate in the forward direction, increasing the time limit, the knob 1 can be further rotated in the opposite direction, the knob 1 is rotated in the opposite direction (clockwise rotation), the ring gear 321 is driven to rotate in the opposite direction (clockwise rotation), the second bevel gear 34 is driven to rotate in the opposite direction (counterclockwise rotation), and the first bevel gear 331 is relatively rotated out of the second bevel gear 341, so that the first bevel gear 33 is disengaged from the second bevel gear 34 and compresses the elastic means. According to the technical scheme, when the time is increased halfway (the motor 31 is started) in the limit, the motor 31 is prevented from being damaged due to forced torsion of the motor 31.

Further, the elastic means is a spring 35 abutting between the first bevel gear 331 and the motor 31.

The above embodiments are merely preferred embodiments of the present invention, and other embodiments are also possible. Equivalent modifications or substitutions may be made by those skilled in the art without departing from the spirit of the invention, and such equivalent modifications or substitutions are intended to be included within the scope of the claims set forth herein.

Claims

1. The gas time-limited closing device comprises a knob (1), and is characterized in that a shaft fixing seat (2) is detachably mounted on the knob (1), more than two groups of shaft fixing seats (2) are selected and mounted on the knob (1), a shaft hole (21) for inserting a rotating shaft (11) into the knob (1) is formed in each shaft fixing seat (2), and the hole diameters of the shaft holes (21) of each group of shaft fixing seats (2) are different; the rotary knob (1) is provided with different shaft fixing seats (2) so as to change the size of the shaft diameter of a rotating shaft (11) which can be suitable for being inserted into the rotary knob (1).

2. The gas time-limited closing device according to claim 1, 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) are overlapped.

3. The gas time-limited closing device according to claim 1, wherein: the front surface of the knob (1) forms a holding part (12), and the back surface is concavely provided with a cavity (13) for installing the shaft fixing seat (2).

4. The gas time-limited closing device according to claim 1, wherein: the side surface of the knob (1) is provided with a time-limited trigger part (14).

5. The gas time-limited closing device according to claim 1, wherein: the knob (1) is provided with a clamping groove (15) for inserting the shaft fixing seat (2), and the clamping groove (15) is provided with an elastic buckling part (151) for buckling the shaft fixing seat (2) to fix.

6. A gas time-limited closing device according to any one of claims 1 to 5, wherein: the gas time-limited closing device further comprises a main machine (3), a motor (31) and a rotating ring (32) are arranged in the main machine (3), the knob (1) is installed in the middle of the rotating ring (32), a ring gear (321) is arranged on the outer ring of the rotating ring (32), and the motor (31) is in transmission connection with the ring gear (321).

7. The gas time-limited closing device according to claim 6, wherein: an electric control board (4) and a time-limited trigger switch (42) are arranged on the main machine (3), the electric control board (4) is electrically connected with the time-limited trigger switch (42) and the motor (31), and the time-limited trigger switch (42) is provided with a contact pin (421) which is abutted against the side part of the knob (1); touch contact pin (421) when knob (1) is rotatory in the opposite direction, time limit trigger switch (42) to automatically controlled board (4) feedback signal, make automatically controlled board (4) driving motor (31) positive direction rotate to drive ring gear (321), knob (1) rotate with the positive direction, touch contact pin (421) is touched again to knob (1), time limit trigger switch (42) again to automatically controlled board (4) feedback signal, make automatically controlled board (4) driving motor (31) shut down.

8. The gas time-limited closing device according to claim 6, wherein: a transmission shaft of the motor (31) is provided with a first bevel gear (33), and the first bevel gear (33) is in transmission connection with the ring gear (321) through a second bevel gear (34).

9. The gas time-limited closing device according to claim 8, wherein: a first bevel gear (331) is arranged on the outer conical surface of the first bevel gear (33), a second bevel gear (341) is arranged on the inner conical surface of the second bevel gear (34), a third bevel gear (342) is arranged on the outer conical surface, the third bevel gear (342) is in meshing transmission with the ring gear (321), and the first bevel gear (33) can be inserted into the second bevel gear (34) or separated from the second bevel gear (34) through an elastic device; the motor (31) rotates in the positive direction, under the action of the tension of the elastic device, the first bevel gear (331) is relatively screwed into the second bevel gear (341), the first bevel gear (33) is screwed into the second bevel gear (34), the first bevel gear (331) and the second bevel gear (341) are in meshing transmission, so that the second bevel gear (34), the ring gear (321) and the knob (1) are driven to rotate in the positive direction, the knob (1) rotates in the reverse direction, the ring gear (321) and the second bevel gear (34) are driven to rotate in the reverse direction, the first bevel gear (331) is relatively screwed out of the second bevel gear (341), and the first bevel gear (33) is separated from the second bevel gear (34) and compresses the elastic device.

10. A gas time-limited shutoff device as defined in claim 9 further comprising: the elastic device is a spring (35) which is abutted between the first bevel gear (331) and the motor (31).