TWI741910B - Tensioning device for safety belt device - Google Patents

Abstract

A tensioning device for a seat belt device is mainly composed of a conveying pipe, a gas generator and a venting piston, wherein a high pressure end of the venting piston is subjected to a pushing flow so that the venting piston generates a Propelling power and moving forward at high speed, the pushing flow simultaneously causes a decompression hole and an outlet end of a vent to generate a jet, which through the decompression hole maintains the average flow direction of the ventilation piston at high speed, and at the same time makes the ventilation The two surfaces of the piston and the transmission channel are separated by a layer of fluid to reduce friction and enable the ventilating piston to maintain high-speed advancement.

Description

Tensioning device for safety belt device

The present invention relates to a tensioning device for a seat belt device, in particular to the high-pressure end of a ventilating piston receiving the pushing flow in the free space to cause the ventilating piston to generate a propulsion power and move forward at a high speed. The pressure hole and the vent hole will correspondingly expand in volume and at the same time cause the overall volume of the venting piston to be deformed for use in the tensioning device of the seat belt device.

The conventional tightening drive used for seat belt devices is like the Announcement No. CN106166996A Patent. Its main features are: the tightening drive has: a gas generator (40), a driving wheel (50) and a conveying pipe (60), The conveying pipe connects the gas generator (40) and the driving wheel (50), wherein there is at least one pushing body (70) in the conveying pipe (60) between the gas generator (40) and the driving wheel (50). , 71), the pushing body is accelerated after the gas generator (40) is triggered and drives the driving wheel (50). According to the present invention, there is a fixing element (200) between the pushing body (70, 71) and the gas generator (40), and the fixing element is supported on the inner wall (61) of the delivery pipe (60).

The existing technology of the tensioning device used for the seat belt device, such as the announcement No. CN1371331A, CN101492038A, CN101687489A, CN103068642A, CN106166996A, DE19602549A1, JP2002012127A, JP2003200240A, KR20020022732A, KR20100025580A, KR101252219B1, US6612514B1, US2010181408A1, US6419176B1, US2016114762A1, WO0100460A1, WO03104050A1, WO2007065563A1, WO2008058580A1, WO2009000417A1, WO2018198829A1, WO2020011621A1, WO2010121746A1, WO2013156122A1, WO2014194993A1, WO2015037485A1, WO2015185052A1, No. WO2016050675A1 Issues in patent cases;

The system structure of the present invention is simple, which enables a ventilation piston to withstand an expansion pressure and a push flow to close the delivery pipe, and the two surfaces of the ventilation piston and the transmission channel are separated by a layer of jet fluid and reduced Friction and keep the ventilated piston moving at a high speed, which is quite practical.

The object of the present invention is to provide a tensioning device for a safety belt device, which provides a ventilating piston that can maintain the pressure balance and stability of the fluid in a delivery pipe during exhaust.

The tensioning device for the seat belt device that can achieve the above-mentioned object of the invention includes:

A conveying pipe is composed of a front end, a transmission channel, a bevel, an ejector, and a tail end. The tail end is fixedly provided with two unidirectional elements, and a passage is formed between the two unidirectional elements. With reliable one-way transmission sex;

A gas generator is set at the front end of the conveying pipe to generate a high-pressure gas to provide a high-magnification expansion pressure and a push flow in the transmission channel;

A ventilation piston is arranged in the transmission channel of the delivery pipe and maintains a free space with the gas generator. The ventilation piston is provided with a high-pressure end to maintain a pressure fit with an inner diameter of the delivery pipe. The high-pressure end is provided with a plurality of decompression holes communicating with a plurality of concave surfaces and a plurality of vent holes communicating with a low-pressure end. The low-pressure end is provided for accommodating a rigid body in an accommodation space provided with a first volume Flowing into the decompression hole will cause the decompression hole to expand due to high pressure, and at the same time, the lower half of the ventilating piston will produce volume expansion and volume deformation, thereby causing an outer surface to produce three-dimensional expansion and expand to fit in the transmission channel. The first volume flow of the pushing flow enters the outlet end of the decompression hole to generate a first jet flow, and the first jet flow enters the concave surface and an inclined surface to form an average flow area area to form the maintenance of the ventilation piston. The average flow direction of the high-speed advance in the transfer channel.

1: Seat belt reel

11: jack

12: Three-dimensional space

13: coupling shaft

14: Collection box

2: Fixer

21: Inside convex surface

22: Outer convex surface

23: Surface profile

24: Horizontal profile

25: The first guide contour

26: opening

27: Second guiding profile

28: Outer edge

291: drive wheel

292: round groove

293: Ring Groove

3: Conveying pipe

31: front end

32: Delivery channel

33: oblique mouth

34: Catapult

35: tail end

36: Piercing

37: One-way element

38: Access

39: inner ring

4: Gas generator

41: Push flow

42: The first volume flow

43: second volume flow

44: First jet

45: second jet

46: Lateral thrust

47: spring

5: Ventilation piston

51: high voltage side

521: pressure relief hole

522: exit

531: Vent

532: exit

533: Channel

541: Outer Surface

542: around

551: Outer diameter

552: Concave

553: slant

56: low pressure side

6: Rigid body

61: action surface

62: top surface

63: round convex

7: Transmission components

8: Director

81: crushing device

82: Convex entity

9: retainer

91: plug hole

92: round hole

93: Volute spring

94: operating space

95: Annular space

96: side cover

97: Bolt

Figure 1 is a top three-dimensional view of the tensioning device used in the seat belt device of the present invention;

Figure 2 is a perspective view of the safety belt reel, the driving wheel and the conveying tube;

Figure 3 is a top perspective exploded view of the tensioning device for the seat belt device;

Figure 4 is a bottom three-dimensional view of the safety belt reel;

Figure 5 is a side view of the drive wheel;

Figure 6 is a perspective view of the holder from a first perspective;

Figure 7 is a perspective view of the holder from a second perspective;

Fig. 8 is a perspective view of the fixing device of Fig. 7 after being combined with the driving wheel;

Figure 9 is a perspective view of the delivery tube;

Figure 10 is a perspective view of the delivery tube, the holder and the drive wheel after being combined;

Figure 11 is a left side view of the conveying pipe, the holder and the driving wheel after being combined;

Figure 12 is a right side view of the conveying pipe, the holder and the driving wheel after being combined;

Figure 13 is a front view of the delivery pipe;

Figure 14 is a perspective view of the guide from a first perspective;

Figure 15 is a perspective view of the guide from a second perspective;

Figure 16 is a schematic cross-sectional view of A-A in Figure 13;

FIG. 17 is an action diagram in which the ventilating piston and the transmission element are moved forward at a high speed by the pushing flow, the guide will disconnect the crushing device and be separated from the crushing device;

18 is an action diagram in which the guide passes through the ejector of the conveying tube and then contacts the second guiding contour of the holder to leave the tail end through the passage;

Figure 19 is a perspective view of the holder from another perspective;

Figure 20 is a three-dimensional exploded view of the ventilation piston from a first perspective;

Figure 21 is a perspective exploded view of the ventilation piston from a second perspective;

Figure 22 is a three-dimensional view of the ventilation piston from a third perspective;

Figure 23 is an enlarged schematic view of a partial cross-section of the ventilation piston arranged on the delivery pipe;

Figure 24 is a schematic cross-sectional view of the venting piston whose pressure-reducing hole is pushed into by the first volume flow and pushing the venting piston; and

FIG. 25 is a schematic cross-sectional view of the vent piston being subjected to the pushing flow to cause the volumetric expansion of the pressure relief hole and the vent hole and the volume deformation of the low pressure end.

Please refer to Figures 1 to 3, a schematic assembly diagram and an exploded view of the embodiment of the seat belt device provided by the present invention, including: a seat belt reel 1, a retainer 2, a driving wheel 291, a The holder 9 and a side cover 95 are constituted.

As shown in Figure 3, the tensioning device provided by the present invention mainly includes: a gas generator 4 in the form of a micro gas generator, a curved conveyor connecting the gas generator 4 and the driving wheel 291 Tube 3, one A pushing body formed in the form of a ventilation piston 5, a plurality of transmission elements 7 and a guide 8. The transmission element 7 is, for example, spherical and not sealed with respect to the delivery pipe 3 and is propelled by the ventilation piston 5 after the gas generator 4 is triggered. The venting piston 5 optionally seals the conveying pipe 3 continuously or temporarily, preferably at least during the initial climbout speed phase after the gas generator 4 is ignited.

The seat belt reel 1 is provided with a plurality of slots 11 (slotting hole) at one end, as shown in FIG. The shaft 13 is driven by a seat belt with an active force to rotate clockwise.

As shown in FIGS. 6 and 7, the anchor 2 (anchor) has a thickness and forms a plurality of inner convex surfaces 21 (inboard convex) and a plurality of outer convex surfaces 22 (outboard convex). The plurality of sockets 11 of the safety belt reel 1 are aligned and fixed to each other, and the inner edge constitutes a surface profile 23 (surface profile) and two horizontal profiles 24 (horizontal profile), and its lower edge constitutes A first guide profile 25 (first guide profile), an opening 26 (opening) and a second guide profile 27 (second guide profile).

As shown in Figures 2, 5, and 8, the driving wheel 291 is connected to the coupling shaft 13, and a plurality of circular slots 292 are arranged in a loop line. An inner bottom is connected A ring groove 293 (ring groove) is provided, the driving wheel 291 rotates between the surface contours 23, and the two transverse contours 24 of the holder 2 are fitted up in the ring groove 293. The slot breadth is greater than the thickness of the lateral profile 24 to form a loose fit.

To further illustrate a tensioning device, please refer to Figure 9 to Figure 18, including:

The conveying tube 3 (conveyor tube) is an inner race 39 (inner race) supported by a plurality of outer edges 28 (outer edges) of the holder 2, and is composed of a dron end 31 and a transfer passage 32. , A miter cut 33 (miter cut), a catapult 34 (catapult) and a tail end 35 (tail end), a bottom surface of the miter 33 is provided with a perforation 36 (perforation), the A unidirectional deformation limit device (unidirectional deformation limit device) is fixed to the tail end 35. The vertical direction of the unidirectional deformation limit device is provided with two unidirectional elements 37 (unidirectional element), and two unidirectional elements 37 A passageway 38 (passage way) is formed therebetween to have a reliable one-way transmission usability.

The gas generator 4 (gas generator) is assembled at the front end 31 of the delivery pipe 3 to generate a high pressure gas to provide a high-magnification expansion pressure in the transmission channel 32 (expansion pressure) and a piston flow 41 (piston flow), the high-pressure gas generates an expansion coefficient of tens or hundreds of times in the transmission channel 32.

The ventilating piston 5 (ventilating piston) is made of a plastic material, as shown in FIGS. 20-24, and is subjected to the pushing flow 41 (or the expansion pressure) to produce permanent deformation. ), is set in the transfer channel 32 of the delivery pipe 3 and maintains a free-space with the gas generator 4. The free-space is provided with a spring 47 (spring) to make the ventilation piston 5 temporarily and the gas generator 4 The gas generator 4 is kept at a distance, and the ventilation piston 5 is provided with a high pressure end 51 (high pressure end), a low pressure end 56 (low pressure end), an external surface 541 (external surface) and formed on an outer diameter 551 (external surface). diameter), the average thickness of the outer surface 541 is less than one-third of the average thickness of the outer diameter 551, and the opposite side of the concave surface 552 is formed by an inclined surface 553 ( declivity), as shown in FIGS. 20-22, the inclined surface 553 is used to generate an average velocity and an average flow for a first jet flow 44 (first jet flow), so that the concave surface 552 Together with the slope 553, a mean basin area is formed;

A plurality of transmission elements 7 are arranged in the transmission channel 32 of the conveying pipe 3, and are made of a metallic material. In order to receive the pressing flow 41, the low pressure end 56 of the ventilation piston 5 is Promote power and move forward at high speed;

As shown in FIGS. 14-16, the guider 8 (guider) is assembled at the oblique opening 33 of the conveying pipe 3. It is made of a metallic material and is composed of a broken device 81 (broken device) and the delivery pipe 3 The perforation 36 is temporarily jointed. As shown in FIG. 17, when the ventilation piston 5 and the transmission element 7 are driven by the pushing flow 41 and move forward at a high speed, the guide 8 will disconnect the crushing device. 81 and separate from the crushing device 81, so that the guide 8 advances with a convex solid 82 (convex solid) through the holder 2 and its first guiding contour 25 to the holder 2 and the drive at the opening 26 The ring groove 293 of the wheel 291;

As shown in FIG. 18, the guide 8 then passes through the ejector 34 of the conveying pipe 3 and then contacts the second guide contour 27 of the holder 2 and leaves the passage 38 between the two unidirectional elements 37. The tail end 35 of the conveying pipe 3 is used to block the transmission element 7 leaving the end 35 from entering the conveying pipe 3 again by the one-way element 37;

When the transmission element 7 passes the ejector 34 in synchronization with the guide 8 with propulsion power, the transmission element 7 at the rear is also guided by the first guiding contour 25 and enters the anchor 2 at the opening 26 at the same time. The circular groove 292 of the driving wheel 291 applies a reaction force to the circular groove 292 to cause the driving wheel 291 to rotate counterclockwise to restrict the rotation of the coupling shaft 13;

Wherein, the distance between the ejector 34 and the circular groove 292 of the driving wheel 291 at the opening 26 is less than an outer diameter 551 of the transmission element 7, so when the transmission element 7 passes here, the transmission element 7 will Depressing the ejector 34 produces an elastic deformation, and then the ejector 34 presses the transmission element 7 with a restoring force of the elastic deformation. Enter the circular groove 292 of the driving wheel 291 at the opening 26 to ensure that the transmission element 7 can enter the circular groove 292 to apply the reaction force. The transmission element 7 leaving the rear end 35 of the conveying pipe 3 is collected by a collecting box 14 disposed at the outlet end of the rear end 35.

As shown in Figures 3 and 19, the retainer 9 (retainer) is provided with a plurality of plug holes 91 (plug hole), a circular hole 92 (circular hole), and a volute spring 93 (volute spring) on its inside. The outer convex surface 22 of the retainer 2 and the plurality of insertion holes 11 are aligned and fixed to each other, and an operating space 94 (operating space) having a depth is used for the retainer 2 and the oblique opening of the conveying pipe 3 33. The catapult 34 and the tail end 35 are covered, wherein the depth of the operating space 94 is greater than the thickness of the holder 2, and an annular space 95 (not shown in the figure) is provided to connect the The coupling shaft 13 of the driving wheel 291 passes through the circular hole 92 and is fixedly mounted with one end of the inner peripheral side of the scroll spring 93, and the other end of the outer peripheral side of the scroll spring 93 is fixedly mounted on the Circular space 95.

As shown in FIGS. 1 and 3, the side cover 96 is used to fix the retainer 9 and the scroll spring 93, and then the side cover 96 is connected to the seat belt reel 1 with two bolts 97.

As shown in Figure 3, Figure 20 and Figure 23, the high-pressure end 51 maintains a force fit (force fit) with an ambient 542 (ambient) and an inner diameter (bore diameter) of the delivery pipe 3. A plurality of pressure relief vents 521 (pressure relief vent) are provided to connect the concave surface 552 and a plurality of vents 531 (air vent) communicates with the low-pressure end 56, the low-pressure end 56 is provided to accommodate a rigid body 6 (rigid body) in a accommodating space provided, the rigid body 6 is disposed in the accommodating space and located in the accommodating space When the low-pressure end 56 is on the low-pressure end 56 and a round convex portion 63 of the rigid body 6 can ensure that the rigid body 6 can tightly press against the low-pressure end 56 where the rigid body 6 is placed, and will not produce polymorphic changes due to the low-pressure end 56, The position where the rigid body 6 is placed changes accordingly. A top surface 62 (top surface) of the rigid body 6 has a top surface camber. When the ventilating piston 5 is subjected to the pushing flow 41 and moves forward in the transmission channel 32 at high speed, the top surface 62 can Make the first transmission element 7 (transmission element) and the rigid body 6 position keeping (station keeping).

As shown in FIG. 24, the high-pressure end 51 receives the pushing flow 41 in the free space (not shown in the figure), so that the ventilating piston 5 generates a thrust power and advances at high speed ahead. The pressure-reducing hole 521 and the vent hole 531 are subjected to a first volume flow 42 (first volume flow) and a second volume flow (second volume flow) of the local fluid of the pushing flow 41. At this time, if plural The transmission element 7 corresponds to when the reaction force of the rigid body 6 is smaller than the pushing flow 41, the average thickness of the pressure relief hole 521 at the outer surface 541 is one third of the average thickness of the outer diameter 551 Hereinafter, when the first volume flow 42 of the pushing flow 41 enters the decompression hole 521, the decompression hole 521 will be expanded by high-pressure expansion, and at the same time, the lower half of the ventilation piston 5 will generate volume. Expansion (volume expansion) and volume deformation (volume deformation) in turn make the outer surface 541 three-dimensional The first volume flow 42 of the push flow 41 enters the outlet end 522 of the decompression hole 521 to generate the first jet 44, The first jet 44 enters the concave surface 552 and the inclined surface 553 together to form an average flow area area to form a mean direction of flow for keeping the ventilation piston 5 advancing at a high speed in the transmission channel 32.

As shown in FIG. 25, the function of the vent hole 531 being sealed by the rigid body 6 is a safety valve (safety valve) function. The second volume flow 43 or a second jet 45 (second jet flow) in the vent hole 531 flow) is less than the reaction force of the plural transmission elements 7 corresponding to the rigid body 6, so that the ventilation hole 531 is in a normally closed state; if the first jet 44 of the pressure relief hole 521 cannot pass the outlet end 522 smoothly When discharging, the second volume flow 43 will discharge the second jet 45 toward an acting surface 61 (acting surface) through the vent 531 to prevent the transmission channel 32 from being damaged by a safety valve design;

The high-pressure end 51 receives the pushing flow 41 in the free space (not shown in the figure) so that the ventilating piston 5 generates the propulsion power to move forward at a high speed. The pressure relief hole 521 and the vent hole 531 are subjected to the pushing flow. 41. The first volume flow 42 and the second volume flow 43 of the local fluid enter. If the outer diameter 551 and the transmission channel 32 are too closed, the first volume flow 42 entering the pressure relief hole 521 is at the outlet When the end 522 cannot discharge the first jet 44, the first volume flow 42 and the second volume flow 43 will still cause the decompression hole 521 and the vent hole 531 to correspondingly expand in volume, and at the same time the ventilation piston 5 is generated as a whole Volume change In turn, the outer surface 541 and the outer diameter 551 are three-dimensionally expanded to expand and fit in the transmission channel 32. The first volume flow 42 and the second volume flow 43 simultaneously make the pressure relief hole 521 and the vent hole 531 Outlet ends 522, 532 generate the first jet 44 and the second jet 45; at this time, a small amount of the first volume flow 42 will enter the decompression hole 521, and a large amount of the second volume flow 43 will enter the vent hole 531. The flow rate of the second jet 45 at the outlet end 532 of the vent hole 531 is several times greater than that of the first jet 44 at the outlet end 522 of the decompression hole 521. Therefore, the outlet end 532 of the vent hole 531 is The second jet 45 exerts a lateral thrust 68 on the outer diameter 551 of the low pressure end 56. The lateral thrust 68 causes the outer diameter 551 to three-dimensionally expand and expand and fit into the transmission channel 32. The average thickness of the outer diameter 551 does not change much, so a channel 533 is formed between the rigid body 6 and the outer diameter 551 to maintain the pressure balance of the transmission channel 32.

To sum up, this case is not only innovative in terms of spatial form, but also can enhance the above-mentioned multiple functions compared with conventional articles. It should fully meet the requirements of novel and progressive statutory invention patents. An application is filed in accordance with the law, and you are kindly requested to approve it. This invention patent application is to encourage invention, and it is easy to feel the virtue.

5: Ventilation piston

522: exit

541: Outer Surface

542: around

551: Outer diameter

552: Concave

553: slant

56: low pressure side

6: Rigid body

62: top surface

Claims (3)

A tensioning device for a safety belt device includes: a conveying pipe composed of a front end, a transmission channel, an oblique mouth, an ejector, and a tail end. The tail end is secured with two unidirectional Element, and a passage is formed between two unidirectional elements to have reliable one-way transmission usability; a gas generator is arranged at the front end of the conveying pipe to generate a high-pressure gas in the transmission channel to provide high power An enlarged expansion pressure and a pushing flow; a ventilation piston, which is arranged in the transmission channel of the delivery pipe and maintains a free space with the gas generator; An inner diameter of the tube is kept in a tight fit. The high-pressure end is provided with a plurality of decompression holes communicating with a plurality of concave surfaces and a plurality of vent holes communicating with a low-pressure end, the low-pressure end is provided to accommodate a rigid body in an accommodation space provided Inside, a first volume flow of the pushing flow entering the pressure relief hole will cause the pressure relief hole to expand due to high pressure, and at the same time cause volume expansion and volume deformation of the lower half of the ventilating piston, thereby creating a three-dimensional outer surface. The first volume flow of the push flow enters an outlet end of the decompression hole to generate a first jet, and the first jet enters the concave surface and an inclined surface together to form an average In the area of the flow area, the average flow direction that maintains the high-speed advancement of the ventilation piston in the transmission channel is constituted. A tensioning device for a safety belt device, comprising: a conveying pipe consisting of a front end, a transmission channel, an oblique mouth, and an ejector And a tail end, the tail end is fixedly provided with two unidirectional elements, and a passage is formed between the two unidirectional elements to have a reliable one-way transmission usability; a gas generator is set in the conveying The front end of the tube is used to generate a high-pressure gas to provide a high-magnification expansion pressure and a pushing flow in the transfer channel; a ventilation piston is arranged in the transfer channel of the transfer tube and is maintained with the gas generator A free space, the ventilating piston is provided with a high-pressure end to maintain a pressure fit with an inner diameter of the delivery pipe around a periphery, the high-pressure end is provided with a plurality of decompression holes communicating with a plurality of concave surfaces and a plurality of vent holes communicating with a low-pressure end, the The low pressure end is provided for accommodating a rigid body in an accommodating space provided. A first volume flow of the pushing flow entering the pressure relief hole will cause the pressure relief hole to expand due to high pressure and at the same time make the ventilation piston The volume expansion and volume deformation of the lower half of the lower half cause an outer surface to produce three-dimensional expansion and expand to fit in the transmission channel. The first volume flow of the push flow enters an outlet end of the pressure relief hole to produce a first Jet, the first jet enters the concave surface and an inclined surface to form an average flow area to form an average flow direction that maintains the ventilating piston to advance at a high speed in the transmission channel; a plurality of transmission elements are arranged in the conveying pipe The transmission channel is made of a metal material, so that the low pressure end of the ventilating piston advances at a high speed with the propulsion power in order to receive the pushing flow. A tensioning device for a safety belt device, comprising: a retainer, the inner edge of which constitutes a surface profile and two transverse profiles, and the lower edge A first guide profile, an opening, and a second guide profile are formed; a driving wheel is connected with a coupling shaft, and a plurality of circular grooves are arranged in an annular line, and an inner bottom of the circular groove is connected and arranged A ring groove, the driving wheel system rotates between the surface contours, and the two transverse contours of the holder are assembled in the ring groove; a conveying pipe, in which the inner ring is supported by the plural outer edges of the holder, is secured by a front end , A transmission channel, an oblique opening, an ejector and a tail end, a bottom surface of the oblique opening is provided with a perforation, the tail end is fixedly provided with two unidirectional elements, and the two unidirectional elements are formed between A passage has reliable one-way transmission usability; a gas generator is arranged at the front end of the conveying pipe to generate a high-pressure gas to provide a high magnification expansion pressure and a push flow in the transmission channel ; A ventilation piston, which is arranged in the transmission channel of the delivery pipe and maintains a free space with the gas generator, the free space is provided with a spring to temporarily keep the ventilation piston at a distance from the gas generator, the ventilation piston A high pressure end is provided to maintain a tight fit with an inner diameter of the delivery pipe. The high pressure end is provided with a plurality of decompression holes communicating with a plurality of concave surfaces and a plurality of vent holes communicating with a low pressure end. The low pressure end is provided to accommodate a The rigid body is in a accommodating space provided, a first volume flow of the pushing flow entering the pressure relief hole will cause the pressure relief hole to expand due to high pressure and at the same time cause the lower half of the ventilation piston to produce volume expansion And volume deformation, which causes a three-dimensional expansion and expansion of an outer surface Fitted in the transfer channel, the first volume flow of the pushing flow enters an outlet end of the pressure relief hole to generate a first jet, and the first jet enters the concave surface and an inclined surface to form an average flow area area , To form an average flow direction that maintains the high-speed advancement of the ventilating piston in the transmission channel; a plurality of transmission elements, which are arranged in the transmission channel of the conveying pipe, are made of a metal material, and are made by the pushing flow. The low pressure end of the ventilating piston advances at a high speed with the propulsion power; a guide is arranged at the oblique opening of the conveying pipe, and is made of a metal material, and is composed of a crushing device and the conveying pipe. The perforation is temporarily engaged. When the ventilating piston and the transmission element are moved forward at a high speed by the pushing flow, the guide will disconnect the crushing device and separate from the crushing device, so that the guide will pass through the crushing device as a convex entity. The first guiding contour of the holder advances to the annular groove of the driving wheel at the opening of the holder, and then the ejector passing through the conveying tube contacts the holder and the second guiding contour leaves the holder The one-way element at the tail end blocks the transmission element leaving the tail end from entering the conveying pipe again. When the transmission element passes through the catapult in synchronization with the guide with propulsion power, the transmission element at the rear is also affected by the first The guiding contour guides and simultaneously enters the circular groove of the driving wheel at the opening of the holder to apply a reaction force to the circular groove to make the driving wheel rotate counterclockwise to limit the rotation of the coupling shaft.

Images