CN113331980A

CN113331980A - Needleless injector for animals

Info

Publication number: CN113331980A
Application number: CN202110503848.6A
Authority: CN
Inventors: 肖长正
Original assignee: Wuhan Zhenghua Precision Machinery Technology Development Co Ltd
Current assignee: Wuhan Zhenghua Precision Machinery Technology Development Co Ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2021-09-03
Anticipated expiration: 2041-05-10
Also published as: CN113331980B

Abstract

The invention provides a needleless injector for animals, which comprises a main body and an impact control device, wherein the impact control device mainly comprises a left handle shell (18), a right handle shell (26), a trigger (39), a safety button (34), a connecting rod (44), a linkage fork (48), a front guide sleeve (55), a rear guide sleeve (56) and a threaded shaft (57) which are connected in sequence, wherein: the upper parts of the left and right handle shells are respectively connected with a cylinder body component (2) in the main body by screws, and the side parts of the left and right handle shells are connected and combined into a complete handle (12) by screws, so that the whole needleless injector is in a pistol shape. The needleless injector for animals realizes two functions of automatically triggering animals by pressing the animals after the trigger is fastened and triggering the animals by fastening the trigger, so that the needleless injector for animals is more suitable for injecting liquid medicines to group animals in different growth stages and different growth environments.

Description

Needleless injector for animals

Technical Field

The invention relates to an injector, in particular to a needleless injector for animals.

Background

The invention relates to a needleless injector for animals, which aims at providing a continuous needleless injector with a pressure-increasing reducing cylinder under the patent application number of 201310126076.4, a pneumatic continuous needleless injector controlled by an air control sliding column valve under the patent application number of 201410669914.7 and a needleless injector under the patent application number of 201520647931.0.

The prior needleless injector with similar functions, namely a continuous needleless injector with a variable diameter cylinder pressurized in patent application No. 201310126076.4, completes the injection of liquid medicine by pulling a trigger, releases the trigger and completes the filling of the liquid medicine.

The prior needleless injector with similar functions, namely a pneumatic continuous needleless injector controlled by a pneumatic control sliding column valve in the patent application No. 201410669914.7, has two firing modes, wherein one firing mode is that when a trigger is adopted to trigger a pilot valve, the rapid firing is realized; and secondly, when the pilot valve is triggered by adopting the handle, quick triggering and automatic triggering are realized.

Current needleless injectors function similarly: patent application No. 201520647931.0, "needleless injector", which employs two firing modes, one is that only the trigger is pulled to not fire; after the trigger is fastened and the injector is pressed to a certain force of the injected object, the injection is automatically triggered. The other is to finish the injection of the liquid medicine by pulling a trigger.

The three needleless injectors can not realize 2 functions of triggering by pulling a trigger and automatically triggering by pressing the trigger in the same product.

However, in the production process of large-scale animal breeding, animals need different injection methods in different growth stages and different growth environments, and users need to use the same needleless injector to realize the functions of pressing the animals to automatically fire after fastening the trigger and pressing the animals to fire again after pressing the animals to meet the use requirements of the animals in different growth stages and different growth environments.

For example, pigs are injected with a vaccine at a pig farm:

piglets (within 21 days old) are raised on an obstetric table, are easy to grasp, and are suitable for adopting a needleless injector which is used for pressing animals and then triggering by pulling a trigger; the nursery pigs (22-70 days old) are raised in a large-stall shed, are not easy to grasp, and are suitable for adopting a needleless injector which is tightly pressed by a trigger and automatically triggered by an animal.

When the sow is in a obstetric table column, an injector can approach the injection site behind the ear of the pig on the obstetric table, and the injection device is suitable for a needleless injector which is used for compressing an animal and then triggering by pulling a trigger; when the sow is at the column of the positioning fence, the injection person can only approach the injection position at the hip of the pig, and the pig can run forwards, so that the device is more suitable for pressing the needleless injector which is automatically fired by the animal after a trigger is fastened.

Disclosure of Invention

The invention aims to solve the technical problems in the prior art, the firing control device of the needleless injector is further improved, the improved needleless injector can realize 2 functions of automatically firing an animal by pressing the animal after the trigger is fastened and firing by pulling the trigger after the animal is pressed on one needleless injector, and the use requirements of injecting liquid medicines by the animal in different growth stages and different growth environments are better met.

The invention provides a device for linking a movable anti-skidding sleeve on a needle-free injector main body with a trigger, wherein a linkage lever is used for pushing a pilot valve button on the needle-free injector main body to control the firing and the return of the needle-free injector, so that 2 functions of automatically firing an animal by pressing the animal after fastening the trigger and firing by pulling the trigger after pressing the animal are realized by one needle-free injector.

The invention adopts the following technical scheme for solving the technical problems:

the invention provides a needleless injector for animals, which comprises a main body and an impact control device, wherein the impact control device mainly comprises a left handle shell, a right handle shell, a trigger, a safety button, a connecting rod, a linkage fork, a front guide sleeve, a rear guide sleeve and a threaded shaft which are sequentially connected, wherein: the upper parts of the left and right handle shells are respectively connected with the cylinder body component in the main body by screws, and the side parts of the left and right handle shells are connected and combined into a complete handle by screws, so that the whole needleless injector becomes a whole body in a pistol shape.

The left and right handle shells are provided with safety button holes at the middle parts, spring clamping grooves are arranged in cavities of the left and right handle shells, pin shaft holes are arranged near the lower parts in the cavities, semicircular grooves are arranged at the front end parts in the cavities, and semicircular grooves are arranged at the upper parts in the cavities; after the left handle shell and the right handle shell are combined into the handle, the notches of the two handle shells are combined into a trigger hole, the four semicircular grooves of the two handle shells are combined into two circular holes, and the two combined circular holes are used for fixedly holding the front guide sleeve and the rear guide sleeve.

The trigger is a flat curved surface-shaped object, and a part for the fingers to be pulled is arranged above the front curved surface; on the flat plane, the upper end of the flat plane is provided with a trigger upper pin shaft hole, and the lower end of the flat plane is provided with a trigger lower pin shaft hole; the middle part of the back curved surface is provided with a circular truncated cone type, conical type or cylindrical trigger boss which is connected with the front end of a trigger return spring, and the back end of the trigger return spring is fixedly arranged in the spring clamping groove; the part of the front curve of the trigger, which is used for the finger to pull, extends out of the handle through the trigger hole; the first pin shaft with the diameter smaller than the first pin shaft hole, the second pin shaft hole and the trigger lower pin shaft hole runs through the trigger lower pin shaft hole, the first pin shaft stretches out of two ends of the plane of the trigger and is arranged in the first pin shaft hole and the second pin shaft hole respectively, and the trigger can rotate along the first pin shaft.

The safety button is a plurality of sections of cylinders with different diameters, the middle part of the safety button is provided with a section of cylinder with a small diameter, and a section of cylinder with a large diameter is arranged close to the cylinder with the small diameter; the cylinder with the other diameter at the two ends of the safety button respectively passes through the safety button hole of the left handle shell and the safety button hole of the right handle shell and then is positioned behind the upper half part of the rear curved surface of the trigger, and the safety button can axially move in the safety button hole, so that the mutual positions of the cylinder with the small diameter and the cylinder with the large diameter and the rear curved surface of the trigger are changed.

After the safety buttons are pressed from the safety button holes of the left handle shell and the right handle shell respectively, the safety buttons can move rightwards and leftwards; when the cylinder with the small diameter is over against the rear curved surface of the trigger, the trigger can be pulled backwards; when the large diameter cylinder is opposite to the rear curved surface position of the trigger, the trigger can not be pulled backwards.

The connecting rod is a long connecting rod with pin shaft holes at two ends, a connecting rod front pin hole is arranged at one end, and a connecting rod rear pin hole is arranged at the other end; a double pin shaft with the diameter smaller than the diameter of the upper pin shaft hole of the trigger and the diameter of the rear pin hole of the connecting rod penetrates through the upper pin shaft hole of the trigger and the rear pin hole of the connecting rod, then two ends of the double pin shaft are riveted and expanded to prevent the double pin shaft from falling off, and the connecting rod can rotate along the double pin shaft to form movable connection capable of rotating along the double pin shaft with the trigger.

The linkage fork is a square block structure with fork-shaped ends, and the fork-shaped parts at the two ends are respectively provided with an upper linkage fork pin hole and a lower linkage fork pin hole; three pin shafts with the diameters smaller than the diameters of the lower pin hole of the linkage fork and the front pin hole of the connecting rod penetrate through the lower pin hole of the linkage fork and the front pin hole of the connecting rod, and then two ends of the three pin shafts are riveted and expanded to prevent the three pin shafts from falling off, so that the linkage fork and the connecting rod are connected into movable connection capable of rotating along the three pin shafts; the linkage fork is arranged in front of the round-head nut, and the round-head nut is right opposite to the middle area of the linkage fork.

The invention adopts the square cross connecting nut which is not limited to the square shape, a through threaded shaft hole is arranged in the middle of the cross connecting nut, a through cylindrical shaft screw hole is arranged in the direction vertical to the axis of the threaded shaft hole and is respectively tapped with threads, and the axes of the threaded shaft hole and the cylindrical shaft screw hole are intersected or not intersected; two cylindrical shaft screws with threads at one end and cylinders at the other end are respectively connected with the left and right cylindrical shaft screw holes of the cross connecting nut, and the cylindrical parts of the cylindrical shaft screws are arranged in pin holes on a linkage fork of the linkage fork, so that the linkage fork and the cross connecting nut form movable connection capable of rotating along the axis of the cylindrical shaft screws.

The front section of the threaded shaft is provided with a step, a cylinder is arranged in front of the step, the top end of the cylinder is a spherical surface, a section of thread is arranged in the middle of the threaded shaft, a section of optical axis is arranged in front of the thread, a section of optical axis is arranged behind the thread, the diameter of the cylinder in front of the step is smaller than the aperture of the lower end hole of the first linkage rod, the cylinder extends into the hole to play a positioning function, the diameter of the step is larger than the aperture of the lower end hole of the first linkage rod, and the front end surface of the step abuts against the rear end surface of the lower end hole of the first linkage rod; the middle screw thread of the screw thread shaft is connected with the screw thread shaft hole of the cross connecting nut, the optical axis of the screw thread shaft is arranged in the front guide sleeve, the optical axis of the screw thread shaft is arranged in the rear guide sleeve, and the screw thread shaft can axially move back and forth.

The front guide sleeve is a cylindrical shaft pin sleeve with two flanged ends, the diameter of an inner hole is larger than that of the optical axis, and the outer circle of the front guide sleeve is clamped by a round hole of the handle, so that the front guide sleeve is fixedly held at the front end of the handle; the rear guide sleeve is also a cylindrical shaft pin sleeve with two flanged ends, the diameter of an inner hole is larger than that of the optical axis, and the excircle of the rear guide sleeve is clamped by another round hole of the handle, so that the rear guide sleeve is fixedly held on the handle.

Compared with the prior art, the invention has the following main advantages:

firstly, a safety button is added, the false triggering is avoided, and the safety of users is ensured.

Secondly, 2 functions of automatically triggering the animal by pressing the animal after the trigger is fastened and triggering the trigger after the animal is pressed are realized.

Thirdly, the practicability is strong, and the injection device can be suitable for injecting liquid medicines to group animals in different growth stages and different growth environments.

In the process of injecting the vaccine to the pigs in a pig farm:

the piglet (within 21 days of age) is very small, the piglet can be carried in the bosom to inject the vaccine, and the injector needs to be aligned to the injection part behind the ear with a very small range during injection, so that the piglet injection device is suitable for using a needleless injector which is tightly pressed behind the ear of the piglet and then triggered by pulling a trigger;

the pig breeding device has the advantages that the pig breeding device can only adopt flying needles to make the pig run and inject, the injection action is required to be fast, and the device is suitable for a needleless injector which is automatically fired after a trigger is tightly pressed to an injection part behind a pig ear;

when the sow is in the obstetric table column, the structure of the obstetric table column can enable epidemic prevention personnel to approach the injection site behind the ear of the sow, and the sow is in a stable state in a small moving range, so that the sow is suitable for using a needleless injector which is tightly pressed on the injection site behind the ear of the sow and then triggered by pulling a trigger;

when the sow is positioned in the column of the positioning column, the structure of the column enables epidemic prevention personnel not to be close to the injection site behind the ear of the pig but only to be close to the injection site at the hip of the pig, and the sow can move forwards and cannot be further fixed, and needs to be injected quickly, so the needle-free injector is more suitable for being automatically fired by pressing the hip of the sow after a fastening trigger is used.

Drawings

FIG. 1 is a drawing showing the same parts of the present invention as the "pneumatically operated continuous needleless injector controlled by a pneumatic strut valve".

Fig. 2 is a drawing showing the same parts of the present invention as the "needleless injector".

Fig. 3 is a partially schematic, partially broken away view of the needleless injector control device for animals of the present invention.

FIG. 4 is a schematic view of the innovative improved firing control of the present invention.

Fig. 5 is a schematic view of the outside of the left handle shell.

Fig. 6 is a schematic view of the outside of the right handle shell.

Fig. 7 is a schematic view of the inside of the left handle shell.

Fig. 8 is a schematic view of the inside of the right handle shell.

Fig. 9 is a schematic view of the left and right handle shell assembly.

Figure 10 is a schematic view of the handle attached to the body.

Fig. 11 is a schematic plan view of the trigger.

Fig. 12 is a rear side schematic view of the trigger.

FIG. 13 is a schematic view of a yoke.

Fig. 14 is a schematic view of a connecting rod.

FIG. 15 is an unconnected cross nut and cylindrical shaft screw.

FIG. 16 is a schematic view of the cross coupling nut, cylindrical shaft screw coupled.

Fig. 17 is a schematic view of a threaded shaft.

FIG. 18 is a schematic view of the mobile slip cover at the front end and the trigger pulled at the rear end.

FIG. 19 is a schematic view of the movable cleat at the rear end with the trigger not pulled at the front end.

FIG. 20 is a schematic view of the movable cleat at the rear end with the trigger actuated.

In the figure, 1, an air storage tank; 2. a cylinder block assembly; 3. a medicine storage bottle; 4. a microporous jet spray head; 5. a plunger pump body; 6. a round head nut; 7. a spring No. one; 8. a spring seat; 9. a movable anti-slip sleeve; 10. a linkage rod No. one; 11. a secondary spring; 12. a handle; 13. a circular hole; 14. a circular hole; 15. a trigger hole; 16. a screw No. one; 17. a double-gauge screw; 18. a left handle shell; 19. a semicircular groove; 20. a semicircular groove; 21. screw holes; 22. a safety button hole; 23. a spring clamp groove; 24. a first pin hole; 25. screw holes; 26. a right handle shell; 27. a semicircular groove; 28. a semicircular groove; 29. screw holes; 30. a safety button hole; 31. a spring clamp groove; 32. a first pin hole; 33. screw holes; 34. an insurance button; 35. a small diameter cylinder; 36. a large diameter cylinder; 37. a trigger return spring; 38. a pin shaft of No. one; 39. a trigger; 40. a pin shaft hole is arranged on the trigger; 41. a lower pin shaft hole of the trigger; 42. a trigger boss; 43. a pin shaft with a pin shape; 44. a connecting rod; 45. a connecting rod front pin hole; 46. a connecting rod rear pin hole; 47. a pin shaft with three numbers; 48. a linkage fork; 49. a pin hole is arranged on the linkage fork; 50. a linkage fork lower pin hole; 51. a cylindrical shaft screw; 52. a cross coupling nut; 53. a threaded shaft hole; 54. a cylindrical shaft screw hole; 55. a front guide sleeve; 56. a rear guide sleeve; 57. a threaded shaft; 58. a step; 59. a thread; 60. an optical axis; 61. an optical axis.

Detailed Description

The present invention will be further described with reference to the following examples and drawings, but is not limited to the following.

The invention provides a needleless injector for animals, which is a firing control device further improved on the basis of a pneumatic continuous needleless injector controlled by a pneumatic control sliding column valve in the patent application No. 201410669914.7 and a needleless injector in the patent application No. 201520647931.0 and consists of a main body and a linkage device.

The main body adopts some parts which are the same as the pneumatic continuous needleless injector controlled by the pneumatic control sliding column valve in the patent application No. 201410669914.7, as shown in figure 1, the main body comprises a gas storage tank 1, a cylinder body component 2, a medicine storage bottle 3, a micropore jet flow nozzle 4, a plunger pump body 5 and a round head nut 6, and the connection relationship is described in Chinese patent invention publication No. CN 104399155A. The linkage part adopts some parts which are the same as those of the needleless injector in patent application No. 201520647931.0, and comprises a spring No. 7, a spring seat 8, a movable anti-slip sleeve 9, a linkage rod No. 10 and a spring No. 11, as shown in fig. 2, and the connection relation is described in a novel granted publication No. CN 204932479U of Chinese patent.

The invention relates to an improved firing control device of a needleless injector for animals, which is the innovative technology of the invention, and the structure of the improved firing control device is shown in figures 3 to 20, and comprises: the improved needleless injector can realize 2 functions of automatically firing an animal after being tightly pressed and automatically firing the animal and then triggering the trigger after being tightly pressed on the same needleless injector by sequentially connecting the parts into a brand new firing control device.

The following steps: the left handle shell 18, the right handle shell 26, the first screw 16, the second screw 17, the first pin 38, the trigger 39, the safety button 34, the second pin 43, the connecting rod 44, the third pin 47, the linkage fork 48, the cylindrical shaft screw 51, the cross connecting nut 52, the front guide sleeve 55, the rear guide sleeve 56 and the threaded shaft 57 are connected as follows:

the left handle shell 18 and the cylinder block assembly 2 in the main body are connected by a double-number screw 17, and the right handle shell 26 and the cylinder block assembly 2 in the main body are connected by another double-number screw 17; the left handle shell 18 and the right handle shell 26 are connected and combined into a complete handle 12 by two one-size screws 16; a pin shaft 38 of No. one penetrates through a lower pin shaft hole 41 of the trigger, and two ends of the pin shaft 38 of No. one, which extend out of the plane of the trigger 39, are respectively arranged in a pin shaft hole 24 of No. one and a pin shaft hole 32 of No. one of the left handle shell 18 and the right handle shell 26, so that the trigger 39 and the handle 12 form movable connection; the part of the front curve of the trigger 39 for the finger to be pulled extends out of the handle 12 through the trigger hole 15; the front end of the trigger return spring 37 is connected with the trigger boss 42, and the rear end of the trigger return spring 37 is fixedly held in the spring clamping groove 23 and the spring clamping groove 31; another diameter cylinder at the two ends of the safety button 34 is positioned behind the upper half of the rear curved surface of the trigger 39 after passing through the safety button hole 22 of the left handle shell 18 and the safety button hole 30 of the right handle shell 26, respectively; a double-gauge pin shaft 43 penetrates through the pin shaft hole 40 and the connecting rod rear pin hole 46 on the trigger, so that the connecting rod 44 and the trigger 39 form movable connection capable of rotating along the double-gauge pin shaft 43; a three-pin shaft 47 penetrates through the lower pin hole 50 of the linkage fork and the front pin hole 45 of the connecting rod, so that the linkage fork 48 and the connecting rod 44 are connected into movable connection capable of rotating along the three-pin shaft 47; the linkage fork 48 is arranged in front of the round-head nut 6, and the round-head nut 6 is opposite to the middle area of the linkage fork 48; two cylindrical shaft screws 51 are respectively connected with left and right cylindrical shaft screw holes 54 of a cross connecting nut 52, and the cylindrical parts of the cylindrical shaft screws 51 are arranged in a linkage fork upper pin hole 49 of a linkage fork 48, so that the linkage fork 48 and the cross connecting nut 52 form movable connection capable of rotating along the axis of the cylindrical shaft screws 51; connecting the middle screw thread 59 of the screw shaft 57 with the screw shaft hole 53 of the cross connection nut 52; a cylinder in front of a step 58 of the threaded shaft 57 extends into a lower end hole of the first linkage rod 10, and the front end face of the step 58 abuts against the rear end face of the lower end hole of the first linkage rod 10; the optical axis 60 of the threaded shaft 57 is arranged in the front guide sleeve 55, the optical axis 61 of the threaded shaft 57 is arranged in the rear guide sleeve 56, the outer circle of the front guide sleeve 55 is clamped by the round hole 13 of the handle 12, so that the front guide sleeve 55 is fixedly clamped at the front end of the handle 12, the outer circle of the rear guide sleeve 56 is clamped by the round hole 14 of the handle 12, and the rear guide sleeve 56 is fixedly clamped in the handle 12; the double spring 11 is sleeved on the outer cylinder of the threaded shaft 57, the front end of the double spring 11 is propped against the cross-shaped connecting nut 52, and the rear end of the double spring is propped against the front end surface of the rear guide sleeve 56.

The left handle shell 18 and the right handle shell 26, as shown in fig. 7, 8 and 10, the left handle shell 18 is provided with a screw hole 21 connected with the cylinder block component 2 in the main body, the left handle shell 18 is connected with the cylinder block component 2 in the main body by a two-part screw 17, the right handle shell 26 is also provided with a screw hole 29 connected with the cylinder block component 2 in the main body, the right handle shell 26 is connected with the cylinder block component 2 in the main body by another two-part screw 17, and the left handle shell 18 and the right handle shell 26 are connected and combined into a complete handle 12 by two one-part screws 16 through the screw hole 25 and the screw hole 33, so that the whole needleless injector is in a pistol shape.

Referring to fig. 7, a safety button hole 22 is arranged in the middle of the left handle shell 18, a spring clamping groove 23 is arranged in the cavity of the left handle shell 18, a pin shaft hole 24 with the number one is arranged in the cavity of the left handle shell 18 close to the lower part, a semicircular groove 19 is arranged at the front end part in the cavity of the left handle shell 18, and a semicircular groove 20 is arranged at the upper part in the cavity of the left handle shell 18;

referring to fig. 8, a safety button hole 30 is arranged in the middle of the right handle shell 26, a spring clamping groove 31 is arranged in the cavity of the right handle shell 26, a pin shaft hole 32I is arranged in the cavity of the right handle shell 26 close to the lower part, a semicircular groove 27 is arranged at the front end part in the cavity of the right handle shell 26, and a semicircular groove 28 is arranged at the upper part in the cavity of the right handle shell 26;

referring to fig. 9, after the left handle shell 18 and the right handle shell 26 are combined into the handle 12, the notches of the left handle shell 18 and the right handle shell 26 are combined into a trigger hole 15; the semicircular groove 19 and the semicircular groove 27 are combined into a circular hole 13 for fixing the front guide sleeve 55; the semicircular groove 20 and the semicircular groove 28 are combined into a circular hole 14 for fixing the rear guide sleeve 56;

the No. one pin 38 is shown in FIG. 12 and is a cylindrical pin with a diameter smaller than the diameter of the No. one pin hole 24, the No. one pin hole 32 and the diameter of the lower pin hole 41 of the trigger.

The trigger 39 is a flat curved object, as shown in fig. 4, 11 and 12, and has a part for the finger to be pulled above the front curved surface; on the flat plane, there is a trigger upper pin hole 40 on the upper end, there is a trigger lower pin hole 41 on the lower end; a circular truncated cone-shaped trigger boss 42 which can also be a conical shape or a cylindrical shape is arranged in the middle of the rear curved surface, the trigger boss 42 is connected with the front end of a trigger return spring 37, and the rear end of the trigger return spring 37 is fixedly arranged in the spring clamping groove 23 and the spring clamping groove 31;

referring to fig. 9 and 10, the portion of the front curve of trigger 39 that provides for finger actuation extends out of handle 12 through trigger aperture 15.

Referring to fig. 7, 8 and 12, a first pin 38 with a diameter smaller than the diameters of a first pin hole 24, a first pin hole 32 and a trigger lower pin hole 41 penetrates through the trigger lower pin hole 41, two ends of the first pin 38 extending out of the plane of a trigger 39 are respectively arranged in the first pin hole 24 and the first pin hole 32, and the trigger 39 can rotate along the first pin 38;

the trigger return spring 37, as shown in fig. 11 and 12, may be a cylindrical spring or a tower spring.

Referring to fig. 3, 7 and 8, the front end of the trigger return spring 37 is sleeved on the trigger boss 42 of the trigger 39, and the rear end is fixedly held in the spring catch 23 of the left handle shell 18 and the spring catch 31 of the right handle shell 26. The trigger return spring 37 holds the trigger 39 in a forward position without an external force pull.

The safety button 34, as shown in fig. 12, is a multi-section cylinder with different diameters, a small diameter cylinder 35 in the middle, and a large diameter cylinder 36 adjacent to the small diameter cylinder 35.

4, 7, 8, 12, another diameter cylinder at the end of the safety button 34 is positioned behind the upper half of the rear curved surface of the trigger 39 after passing through the safety button hole 22 of the left handle shell 18 and the safety button hole 30 of the right handle shell 26, respectively; the safety button 34 is axially movable within the safety button apertures 22 and the apertures of the safety button aperture 30; axial movement of the safety button 34 changes the mutual position of the small diameter cylinder 35 and the large diameter cylinder 36 and the rear curved surface of the trigger 39. The safety button 34 can be pushed from the safety button hole 22 of the left handle shell 18 to the right; the safety button 34 can also be moved to the left by being pushed through the safety button aperture 30 of the right handle shell 26. When the small diameter cylinder 35 of the safety button 34 is aligned with the rear curved surface of the trigger 39, the trigger 39 can be pulled backward; when the large diameter cylinder 36 of the safety button 34 is facing the rear curved position of the trigger 39, the trigger 39 cannot be pulled backwards;

the pin 43, fig. 12 and 14, is a cylindrical pin with a diameter smaller than the diameters of the pin hole 40 and the connecting rod rear pin hole 46 on the trigger.

The link 44 is shown in fig. 14 as a long bar type link having pin hole holes at both ends, a link front pin hole 45 at one end, and a link rear pin hole 46 at the other end.

Referring to fig. 4, 12 and 14, a double-gauge pin shaft 43 with a diameter smaller than the diameters of the upper pin shaft hole 40 and the rear connecting rod pin hole 46 of the trigger penetrates through the upper pin shaft hole 40 and the rear connecting rod pin hole 46, then the two ends of the double-gauge pin shaft 43 are riveted to prevent the two ends from falling off, and the connecting rod 44 can rotate along the double-gauge pin shaft 43, so that the connecting rod 44 and the trigger 39 form a movable connection capable of rotating along the double-gauge pin shaft 43.

The three-pin shaft 47 is shown in fig. 13 and 14, and is a cylindrical pin shaft, and the diameter of the three-pin shaft is smaller than the aperture of the lower pin hole 50 of the linkage fork and the aperture of the front pin hole 45 of the connecting rod.

The linkage fork 48 is a square block structure with two fork-shaped ends, as shown in fig. 13, and the fork-shaped parts of the two ends are respectively provided with an upper linkage fork pin hole 49 and a lower linkage fork pin hole 50.

Referring to fig. 4, 13 and 14, a triple pin 47 with a diameter smaller than the diameter of the linkage fork lower pin hole 50 and the connecting rod front pin hole 45 penetrates through the linkage fork lower pin hole 50 and the connecting rod front pin hole 45, and then two ends of the triple pin 47 are riveted to prevent the triple pin from falling off, so that the linkage fork 48 and the connecting rod 44 are connected into a movable connection capable of rotating along the triple pin 47.

Referring to fig. 4, the linkage fork 48 is disposed in front of the ball nut 6, with the ball nut 6 facing the middle area of the linkage fork 48.

Referring to fig. 15, the cylindrical shaft screw 51 is a screw with a thread at one end and a cylinder at the other end, and the diameter of the cylinder is smaller than the diameter of the pin hole 49 on the yoke.

Referring to fig. 15, the cross coupling nut 52 is a square object without limitation, and has a threaded shaft hole 53 extending therethrough, and a cylindrical shaft screw hole 54 extending therethrough in a direction perpendicular to an axis of the threaded shaft hole 53, and is threaded respectively, and axes of the threaded shaft hole 53 and the cylindrical shaft screw hole 54 may or may not intersect each other.

Referring to fig. 4, 13, 15 and 16, two cylindrical shaft screws 51 with threads at one end and cylinders at the other end are respectively connected with left and right cylindrical shaft screw holes 54 of a cross connecting nut 52, and the cylindrical parts of the cylindrical shaft screws 51 are arranged in the linkage fork upper pin holes 49 of the linkage fork 48, so that the linkage fork 48 and the cross connecting nut 52 form a movable connection capable of rotating along the axis of the cylindrical shaft screws 51.

The threaded shaft 57 is shown in fig. 4 and fig. 17, a step 58 is arranged at the front section, a cylinder is arranged in front of the step, the top end of the cylinder is a spherical surface, a section of thread 59 is arranged in the middle of the threaded shaft 57, a section of optical axis 60 is arranged in front of the thread 59, a section of optical axis 61 is arranged behind the thread 59, the diameter of the cylinder in front of the step 58 is smaller than the aperture of the lower end hole of the linkage rod No. one 10 and extends into the hole to play a positioning function, the diameter of the step 58 is larger than the aperture of the lower end hole of the linkage rod No. one 10, and the front end face of the step 58 abuts against the rear end face of the lower end hole of the linkage rod No. one 10.

Referring to fig. 3, 15 and 17, the middle thread 59 of the threaded shaft 57 is connected to the threaded shaft hole 53 of the cross connection nut 52.

Referring to fig. 2, the double-gauge spring 11 is fitted around the outer cylinder behind the thread 59 of the threaded shaft 57, with its front end abutting against the cross coupling nut 52 and its rear end abutting against the front end face of the rear guide sleeve 56, and the double-gauge spring 11 can hold the threaded shaft 57 in the forward position without the application of external force.

Referring to fig. 3, 4 and 17, the optical axis 60 of the threaded shaft 57 is inside the front guide sleeve 55, the optical axis 61 of the threaded shaft 57 is inside the rear guide sleeve 56, and the threaded shaft 57 can move axially back and forth.

The front guide sleeve 55, as shown in fig. 3 and 4, is a cylindrical shaft pin sleeve with flanges at both ends, and the diameter of the inner hole is larger than that of the optical axis 60.

Referring to fig. 3 and 5, the outer circumference of the front guide sleeve 55 is caught by the circular hole 13 of the handle 12, so that the front guide sleeve 55 is held at the front end of the handle 12.

The rear guide sleeve 56 is a cylindrical shaft pin sleeve with flanges at both ends, as shown in fig. 3 and 4, and the diameter of the inner hole is larger than that of the optical axis 61.

Referring to fig. 3 and 5, the outer circle of the rear guide sleeve 56 is clamped by the circular hole 14 of the handle 12. With the rear guide sleeve 56 retained within the handle 12.

The operation process of the needleless injector provided by the embodiment is as follows:

referring to FIGS. 5, 6 and 12, when the safety button 34 is pushed down from the safety button hole 22 of the left handle shell 18 and moved rightward, the small diameter cylinder 35 faces the rear curved surface of the trigger 39, and the trigger 39 can be pulled backward; when the safety button 34 is pushed down from the safety button hole 30 of the right handle shell 26 and moves to the left, the large-diameter cylinder 36 faces the rear curved surface position of the trigger 39, the trigger 39 is supported by the large-diameter cylinder 36, and the trigger 39 can not be pulled backwards;

referring to fig. 18, when the movable anti-slip sleeve 9 is not pressed against the injected animal, the link rod 10 of the first number does not move backwards, the threaded shaft 57, the cross-shaped connecting nut 52 and the cylindrical shaft screw 51 do not move backwards, the upper pin hole 49 of the link fork on the link fork 48 is not changed in the original position, the trigger 39 is pulled, the upper pin hole 40 of the trigger moves backwards, the lower pin hole 50 of the link fork under the link fork 48 is pulled backwards through the connecting rod 44, the link fork 48 rotates anticlockwise with the upper pin hole 49 of the link fork as the center of a circle, the middle part of the link fork 48 pushes the round-head nut 6 backwards, but the backward pushing stroke is only 1/3 to 2/3 of the backward moving stroke of the upper pin hole 40 of the trigger, the stroke does not reach the trigger position set by the pilot valve, the pilot valve cannot be triggered, and the injector cannot be triggered at this time.

Referring to fig. 19, when the movable antiskid sleeve 9 is pressed against an injected animal, the linkage rod 10 of the first number moves backwards, the threaded shaft 57, the cross-shaped connecting nut 52 and the cylindrical shaft screw 51 all move backwards, the linkage fork upper pin hole 49 on the linkage fork 48 also moves backwards, the trigger 39 is not pulled, the trigger upper pin hole 40 cannot move, the linkage fork lower pin hole 50 on the lower portions of the connecting rod 44 and the linkage fork 48 cannot move backwards, the linkage fork 48 rotates clockwise with the linkage fork lower pin hole 50 as a circle center, the round-head nut 6 is pushed backwards in the middle of the linkage fork 48, but the backward pushing stroke is only 1/3-2/3 of the backward moving stroke of the movable antiskid sleeve 9, the stroke cannot reach the triggering position set by the pilot valve, the pilot valve cannot be triggered, and the injector cannot be triggered.

Referring to fig. 20, after the trigger 39 is fastened, the pin hole 40 on the trigger moves backwards, the lower pin hole 50 of the linkage fork below the linkage fork 48 is pulled backwards through the connecting rod 44, the lower pin hole 50 of the linkage fork moves backwards, the linkage fork 48 rotates anticlockwise around the pin hole 49 on the linkage fork, at this time, the injector is pressed against the injected animal, when the movable anti-slip sleeve 9 presses the injected animal, the linkage rod 10 No. one moves backwards, the threaded shaft 57, the cross connecting nut 52 and the cylindrical shaft screw 51 all move backwards, the pin hole 49 on the linkage fork above the linkage fork 48 also moves backwards, the middle part of the linkage fork pushes the round head nut 6 backwards, at this time, the backward pushing stroke is 1/2 which is the sum of the backward moving stroke of the anti-slip pin hole 40 on the trigger and the backward moving stroke of the movable sleeve 9, and the stroke is enough to trigger the pilot valve, at this time, the injector starts to fire. This process achieves: after the trigger 39 is tightened, the movable anti-slip cover 9 of the injector is pressed tightly against the injected animal, and the function is automatically triggered.

Referring to fig. 20, when the movable antiskid sleeve 9 compresses the injected animal, the linkage rod 10 moves backwards, the threaded shaft 57, the cross-shaped connecting nut 52 and the cylindrical shaft screw 51 all move backwards, the linkage fork upper pin hole 49 on the linkage fork 48 also moves backwards, the trigger 39 is pulled again, the trigger upper pin hole 40 moves backwards, the second pin shaft 43 moves backwards, the linkage fork lower pin hole 50 under the linkage fork 48 is pulled backwards through the connecting rod 44, the linkage fork 48 moves backwards integrally, the middle part of the linkage fork pushes the round-head nut 6 backwards, the backward pushing stroke is 1/2 which is the sum of the backward moving stroke of the movable antiskid sleeve 9 and the backward moving stroke of the trigger upper pin hole 40, and the stroke is enough to trigger the pilot valve to trigger, and the injector starts to fire. This process achieves: the movable anti-slip sleeve 9 compresses the injected animal and triggers the trigger 39 to trigger.

The innovative technology of the invention is as follows: the improved firing control device comprises: a left handle shell, a right handle shell and a No. one screw; a screw No. one; the improved needleless injector can realize 2 functions of automatically triggering an animal by pressing the animal tightly after fastening the trigger and triggering the trigger by pulling the trigger to trigger on the needleless injector.

Claims

1. The utility model provides a needleless injector for animals, includes main part and percussion control device, and characterized by percussion control device mainly comprises consecutive left handle shell (18), right handle shell (26), trigger (39), safety button (34), connecting rod (44), linkage fork (48), preceding uide bushing (55), back uide bushing (56), threaded shaft (57), wherein: the upper parts of the left and right handle shells are respectively connected with a cylinder body component (2) in the main body by screws, and the side parts of the left and right handle shells are connected and combined into a complete handle (12) by screws, so that the whole needleless injector is in a pistol shape.

2. The needleless injector for animals of claim 1, wherein said left and right handle shells have a safety button hole in the middle portion thereof, a spring slot in the cavity thereof, a pin hole near the lower portion thereof, a semicircular groove in the cavity thereof at the front end portion thereof, and a semicircular groove in the cavity thereof at the upper portion thereof; after the left handle shell and the right handle shell are combined into the handle (12), the notches of the two handle shells are combined into a trigger hole (15), the four semicircular grooves of the two handle shells are combined into two circular holes, and the two combined circular holes are used for fixedly holding the front guide sleeve (55) and the rear guide sleeve (56).

3. The needleless injector for animals according to claim 1, characterized in that said trigger (39) is a flat curved object having a finger-engaging portion above the front curve; on the flat plane, the upper end of the flat plane is provided with a trigger upper pin shaft hole (40), and the lower end of the flat plane is provided with a trigger lower pin shaft hole (41); a circular truncated cone-shaped, conical or cylindrical trigger boss (42) is arranged in the middle of the rear curved surface, the trigger boss is connected with the front end of a trigger return spring (37), and the rear end of the trigger return spring is fixedly arranged in the spring clamping groove; the part of the front curve of the trigger (39) for the finger to be pulled extends out of the handle (12) through the trigger hole (15); a pin shaft (38) with the diameter of one number, which is smaller than the diameters of a first pin shaft hole (24), a second pin shaft hole (32) and a lower pin shaft hole (41) of the trigger, penetrates through the lower pin shaft hole (41) of the trigger, two ends of the pin shaft (38) with the diameter of one number, which extend out of the plane of the trigger (39), are respectively arranged in the first pin shaft hole (24) and the second pin shaft hole (32), and the trigger (39) can rotate along the pin shaft (38) with the diameter of one number.

4. The needleless syringe for animals according to claim 1, characterized in that said safety button (34) is a multi-section cylinder of different diameter, having in the middle a small diameter cylinder (35) and, next to the small diameter cylinder (35), a large diameter cylinder (36); the other diameter cylinder at the two ends of the safety button (34) respectively passes through the safety button hole (22) of the left handle shell (18) and the safety button hole (30) of the right handle shell (26) and then is positioned behind the upper half part of the rear curved surface of the trigger (39), and the safety button (34) can move axially in the safety button hole, so that the mutual positions of the small diameter cylinder and the large diameter cylinder and the rear curved surface of the trigger (39) are changed.

5. The needleless injector for animals according to claim 4, wherein the safety button (34) is moved to the right and left when pressed from the respective safety button holes of the left and right handle cases; when the small-diameter cylinder (35) is opposite to the rear curved surface position of the trigger (39), the trigger (39) can be pulled backwards; when the large diameter cylinder (36) is opposite to the rear curve position of the trigger (39), the trigger (39) can not be pulled backwards.

6. The needleless injector for animals according to claim 1, wherein said connecting rod (44) is an elongated connecting rod having pin holes at both ends, a connecting rod front pin hole (45) at one end and a connecting rod rear pin hole (46) at the other end; a double-number pin shaft (43) with the diameter smaller than the diameters of the upper pin shaft hole (40) and the connecting rod rear pin hole (46) of the trigger penetrates through the upper pin shaft hole (40) and the connecting rod rear pin hole (46) of the trigger, then two ends of the double-number pin shaft (43) are riveted and expanded to prevent the double-number pin shaft from falling off, and the connecting rod (44) can rotate along the double-number pin shaft (43) to enable the connecting rod (44) and the trigger (39) to form movable connection capable of rotating along the double-number pin shaft (43).

7. The needleless injector for animals according to claim 1, wherein the linkage fork (48) is a square block structure with two fork-shaped ends, and the fork-shaped parts of the two ends are respectively provided with an upper pin hole (49) and a lower pin hole (50) of the linkage fork; three pin shafts (47) with the diameters smaller than the diameters of the lower pin holes (50) of the linkage forks and the apertures of the front pin holes (45) of the connecting rods penetrate through the lower pin holes (50) of the linkage forks and the front pin holes (45) of the connecting rods, then two ends of the three pin shafts (47) are riveted to be expanded so as not to fall off, and the linkage forks (48) and the connecting rods (44) are connected into movable connection capable of rotating along the three pin shafts (47); the linkage fork (48) is arranged in front of the round-head nut (6), and the round-head nut (6) is opposite to the middle area of the linkage fork (48).

8. The needleless injector for animals according to claim 1, wherein a cross coupling nut (52) which is square and not limited to square is used, a threaded shaft hole (53) is provided therethrough, a cylindrical shaft screw hole (54) is provided therethrough in a direction perpendicular to the axis of the threaded shaft hole (53), and is tapped with threads, respectively, and the axes of the threaded shaft hole (53) and the cylindrical shaft screw hole (54) intersect or do not intersect; two cylindrical shaft screws (51) with threads at one end and cylinders at the other end are respectively connected with left and right cylindrical shaft screw holes (54) of a cross connecting nut (52), and the cylindrical parts of the cylindrical shaft screws (51) are arranged in a linkage fork upper pin hole (49) of a linkage fork (48), so that the linkage fork (48) and the cross connecting nut (52) form movable connection capable of rotating along the axis of the cylindrical shaft screws (51).

9. The needleless injector for animals according to claim 1, characterized in that the front section of the threaded shaft (57) is provided with a step (58), a cylinder is arranged in front of the step, the top end of the cylinder is a spherical surface, a section of thread (59) is arranged in the middle of the threaded shaft (57), a section of optical axis (60) is arranged in front of the thread (59), a section of optical axis (61) is arranged behind the thread (59), the diameter of the cylinder in front of the step (58) is smaller than the aperture of the lower end hole of the linkage rod A (10) and extends into the hole to achieve the positioning function, the diameter of the step (58) is larger than the aperture of the lower end hole of the linkage rod A (10), and the front end surface of the step (58) abuts against the rear end surface of the lower end hole of the linkage rod A (10); the middle thread (59) of the threaded shaft (57) is connected with the threaded shaft hole (53) of the cross connecting nut (52), the optical axis (60) of the threaded shaft (57) is arranged in the front guide sleeve (55), the optical axis (61) of the threaded shaft (57) is arranged in the rear guide sleeve (56), and the threaded shaft (57) can axially move back and forth.

10. The needleless injector for animals according to claim 9, wherein the front guide sleeve (55) is a cylindrical pin sleeve with flanges at both ends, the diameter of the inner hole is larger than that of the optical axis (60), the outer circle of the front guide sleeve (55) is caught by a circular hole (13) of the handle (12) to hold the front guide sleeve (55) at the front end of the handle (12); the rear guide sleeve (56) is also a cylindrical shaft pin sleeve with two flanged ends, the diameter of an inner hole is larger than that of the optical axis (61), the excircle of the rear guide sleeve (56) is clamped by another round hole (14) of the handle (12), and the rear guide sleeve (56) is fixedly held on the handle (12).