CN113331980B - Needleless injector for animals - Google Patents
Needleless injector for animals Download PDFInfo
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- CN113331980B CN113331980B CN202110503848.6A CN202110503848A CN113331980B CN 113331980 B CN113331980 B CN 113331980B CN 202110503848 A CN202110503848 A CN 202110503848A CN 113331980 B CN113331980 B CN 113331980B
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- trigger
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- handle shell
- guide sleeve
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- 241001465754 Metazoa Species 0.000 title claims abstract description 43
- 230000003287 optical effect Effects 0.000 claims description 21
- 230000008859 change Effects 0.000 claims description 2
- 238000009527 percussion Methods 0.000 claims 2
- 238000010304 firing Methods 0.000 abstract description 38
- 239000003814 drug Substances 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 abstract description 7
- 229940079593 drug Drugs 0.000 abstract description 3
- 238000002347 injection Methods 0.000 description 17
- 239000007924 injection Substances 0.000 description 17
- 230000001960 triggered effect Effects 0.000 description 8
- 238000003825 pressing Methods 0.000 description 7
- 210000005069 ears Anatomy 0.000 description 6
- 241000282887 Suidae Species 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 4
- 210000001217 buttock Anatomy 0.000 description 3
- 229960005486 vaccine Drugs 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61D—VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
- A61D7/00—Devices or methods for introducing solid, liquid, or gaseous remedies or other materials into or onto the bodies of animals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/70—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in livestock or poultry
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides a veterinary needleless injector, which comprises a main body and a firing control device, wherein the firing 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 firing control device comprises a main body, a rear guide sleeve (56) and a threaded shaft (57), wherein the front guide sleeve is a hollow cylinder, the rear guide sleeve is a hollow cylinder, and the firing control device comprises a front guide sleeve and a rear guide sleeve (56) which are sequentially connected with the main body, and the firing control device comprises a front guide sleeve and a rear guide sleeve (57) which are sequentially connected with the main body. The upper parts of the left handle shell and the right handle shell are respectively connected with a cylinder body component (2) in the main body by screws, and the side parts of the left handle shell and the right handle shell are connected and combined into a complete handle (12) by screws, so that the whole needleless injector is formed into a pistol-shaped whole. The needleless injector for animals realizes two functions of automatic firing of the compressed animals after the trigger is fastened and firing of the trigger is started after the animals are compressed, so that the needleless injector for animals is more suitable for injecting liquid medicines to animals in different growth stages and different growth environments.
Description
Technical Field
The invention relates to a syringe, in particular to a needleless syringe for animals.
Background
The invention relates to a veterinary needleless injector, which aims at a 'continuous needleless injector pressurized by a variable diameter cylinder' of patent application number 201310126076.4, a 'pneumatic continuous needleless injector controlled by a pneumatic sliding column valve' of patent application number 201410669914.7, and a 'needleless injector' of patent application number 201520647931.0, wherein the firing control device of the three needleless injectors is further improved, and the improved needleless injector realizes two functions of automatic firing of a compressed animal after fastening a trigger and firing of the compressed animal after pulling the trigger, so that the veterinary needleless injector is more suitable for injecting liquid medicines into group animals in different growth stages and different growth environments.
The current needleless injector with similar functions is a continuous needleless injector pressurized by a variable-diameter cylinder in patent application No. 201310126076.4, and the injection of liquid medicine is finished by pulling a trigger, and the trigger is released to finish the filling of the liquid medicine.
The existing needleless injector with similar functions is a pneumatic continuous needleless injector controlled by a pneumatic control sliding column valve in patent application number 201410669914.7, and has two firing modes, namely, one of the two firing modes is that when a trigger is adopted to trigger a pilot valve, quick firing is realized; and secondly, when the pilot valve is triggered by adopting the handle, the quick firing and the automatic firing are realized.
Needleless injectors that are functionally similar to the current ones: the patent application No. 201520647931.0 "needleless injector" adopts two firing modes, namely, one mode is that only the trigger is pulled and the firing is not performed; after the trigger is fastened and the injector is pressed to a certain force on the injected object, the injection is automatically started to be triggered. The other is to complete the injection of the liquid medicine by pulling the trigger.
The three needleless injectors described above all do not allow for the 2 functions of trigger firing and auto-firing of compression in the same product.
However, in the production process of large-scale animal cultivation, different injection methods are needed for animals in different growth stages and different growth environments, and a user needs to use the same needleless injector to realize the functions of pressing the trigger and automatically firing the animals and triggering the trigger 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 vaccine in a pig farm:
piglets (within 21 days old) are raised in a obstetric table, are easy to grasp, and are suitable for being triggered by pressing animals and pulling a trigger; the nursery pigs (22-70 days old) are raised in large houses in a scattered way, the pigs are not easy to grasp, and the needleless injector which is suitable for compacting animals after the trigger is fastened and automatically triggering is adopted.
When the sow is in the obstetric table, the injection staff can approach the injection position behind the ears of the sow on the obstetric table, and the needle-free injector which is triggered by pressing the animals and then pulling the trigger is suitable for being used; when the sow is positioned in the column, the injector can only approach the buttock injection part of the pig, and the pig can run forwards, so that the injector is more suitable for pressing the needleless injector for automatically triggering animals after the trigger is fastened.
Disclosure of Invention
The invention aims to solve the technical problems of overcoming the problems in the prior art, further improving the firing control device of the needleless injector, and realizing 2 functions of automatic firing of a compressed animal after fastening a trigger and triggering the trigger after compressing the animal on one needleless injector by the improved needleless injector, thereby better meeting the use requirements of injecting liquid medicines into animals in different growth stages and different growth environments.
The invention provides a device for linkage of a movable anti-slip sleeve and a trigger on a needleless injector main body, which uses a linkage lever to push a pilot valve button on the needleless injector main body to control firing and return of the needleless injector, so that the needleless injector realizes 2 functions of automatic firing of a compressed animal after the trigger is fastened and firing of the trigger after the animal is compressed.
The invention solves the technical problems by adopting the following technical scheme:
the invention provides a veterinary needleless injector, which comprises a main body and a firing control device, wherein the firing 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 connected in sequence, wherein: the upper parts of the left handle shell and the right handle shell are respectively connected with a cylinder body component in the main body by screws, and the side parts of the left handle shell and the right handle shell are connected and combined into a complete handle by screws, so that the whole needleless injector is formed into a pistol-shaped whole.
The left handle shell and the right handle shell are provided with a safety button hole in the middle, a spring clamping groove is arranged in a cavity of the left handle shell and the right handle shell, a pin shaft hole is arranged in the cavity of the left handle shell and the right handle shell close to the lower part of the left handle shell, a semicircular groove is arranged at the front end part in the cavity of the left handle shell, and a semicircular groove is arranged at the upper part in the cavity of the right handle shell; after the left handle shell and the right handle shell are combined into a 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 fixing the front guide sleeve and the rear guide sleeve.
The trigger is a flat curved object, and a part for pulling a finger is arranged above the front curved surface; the upper end of the flat plane is provided with a trigger upper pin hole, and the lower end of the flat plane is provided with a trigger lower pin hole; the middle part of the back curved surface is provided with a round table type, a conical type or a cylindrical type trigger boss, the trigger boss is connected with the front end of a trigger return spring, and the rear end of the trigger return spring is fixedly arranged in a spring clamping groove; the front curved surface of the trigger is used for pulling the finger, and extends out of the handle through the trigger hole; the first pin shaft hole and the second pin shaft hole are respectively arranged at two ends of the first pin shaft extending out of the plane of the trigger, 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 the part, which is close to the cylinder with the small diameter, is provided with a section of cylinder with a large diameter; the other diameter cylinder 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 back curved surface of the trigger, and the safety button can axially move in the hole of the safety button hole so as to change the mutual positions of the small-diameter and large-diameter cylinder and the back curved surface of the trigger.
After the safety button is respectively pressed from the safety button holes of the left handle shell and the right handle shell, the safety button can be moved rightwards and leftwards; when the small-diameter cylinder is opposite to the back curved surface of the trigger, the trigger can be pulled backwards; when the large diameter cylinder is facing the back curve of the trigger, the trigger cannot be pulled back.
The connecting rod is a strip-shaped connecting rod with pin holes at two ends, one end of the connecting rod is provided with a connecting rod front pin hole, and the other end of the connecting rod is provided with a connecting rod rear pin hole; the two-number pin shaft with the diameter smaller than the diameter of the pin shaft hole on the trigger and the diameter of the rear pin hole of the connecting rod penetrates through the pin shaft hole on the trigger and the rear pin hole of the connecting rod, then the two ends of the two-number pin shaft are riveted and expanded to prevent the two ends from falling off, the connecting rod can rotate along the two-number pin shaft, and the connecting rod and the trigger form movable connection capable of rotating along the two-number pin shaft.
The linkage fork is of 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; a three-number pin shaft with the diameter smaller than the diameters of the lower pin hole of the linkage fork and the front pin hole of the connecting rod penetrates through the lower pin hole of the linkage fork and the front pin hole of the connecting rod, and then the two ends of the three-number pin shaft are riveted and expanded to prevent the three-number pin shaft from falling off, so that the linkage fork and the connecting rod are connected into movable connection capable of rotating along the three-number pin shaft; the linkage fork is arranged in front of the round-head screw cap, and the round-head screw cap is opposite to the middle area of the linkage fork.
The invention adopts square cross connecting nuts, which are not limited to square, the middle of the cross connecting nuts is provided with a threaded shaft hole which penetrates through, a cylindrical shaft screw hole which penetrates through is arranged in the direction perpendicular to the axis of the threaded shaft hole, threads are respectively tapped, and the axes of the threaded shaft hole and the cylindrical shaft screw hole are intersected or not intersected; two cylindrical shaft screws with one end being screw thread and the other end being cylindrical are respectively connected with left and right cylindrical shaft screw holes of the cross connecting nut, and cylindrical parts of the cylindrical shaft screws are arranged in upper pin holes 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 screw.
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 and 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 face of the step props against the rear end face 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 forwards and backwards.
The front guide sleeve is a cylindrical shaft pin sleeve with flanges at two ends, the diameter of an inner hole is larger than that of an 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 flanges at two ends, the diameter of an inner hole is larger than that of an optical axis, and the outer circle of the rear guide sleeve is clamped by the other 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, the safety button is added, false firing is avoided, and the safety of users is ensured.
Secondly, the automatic trigger device realizes 2 functions of automatic trigger of the compressed animals after the trigger is fastened and trigger of the compressed animals after the trigger is fastened.
Thirdly, the practicality is strong, can be fit for injecting liquid medicine for the crowd animal of different growth stages and different growing environment.
During the injection of vaccine into pigs in pig farms:
the piglets (within 21 days old) are very small, so that the pigs can be held in the arms for injecting the vaccine, and the injector is required to be aligned to the injection position behind the ears with a very small range during injection, so that the injector is suitable for a needleless injector which is triggered by pressing the ears of the piglets and then pulling a trigger;
the pig is kept and fattened, the pig grows up, the pig is raised in bulk in a large hurdle, one person cannot hold the pig for fixation, only the flying needle can be adopted, the pig is injected while running, the injection action requirement is fast, and the needle-free injector which is suitable for automatically triggering the injection part behind the ears of the pig after the trigger is fastened is used;
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 position behind the ears of the sow, and the sow is in a retaining state in a very small movable range, so that the sow is suitable for a needleless injector which is triggered by pressing the injection position behind the ears of the sow and then pulling a trigger;
when the sow is in the column of the locating fence, the structure of the column enables epidemic prevention personnel to be unable to access the injection position behind the ear of the sow and only to access the injection position of the buttock of the sow, and the sow can move forward and cannot be further fixed, and quick injection is required, so that the needle-free injector is more suitable for automatically triggering the buttock of the sow by fastening the trigger.
Drawings
FIG. 1 is a drawing of the same components of the present invention as a pneumatically controlled spool valve controlled pneumatic continuous needleless injector.
FIG. 2 is a drawing of the same component of the present invention as a "needleless injector".
Figure 3 is a schematic cross-sectional view of a portion of a control device for a needleless injector for veterinary use in accordance with the present invention.
FIG. 4 is a schematic view of the firing control device of the present inventive improvement.
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 shells in combination.
Fig. 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 view of the trigger.
Fig. 13 is a schematic diagram of a ganged fork.
Fig. 14 is a schematic view of a connecting rod.
Fig. 15 is a schematic view of a cross-connection nut, a cylindrical shaft screw, and unconnected.
Fig. 16 is a schematic view of a cross-connection nut, cylindrical shaft screw, connected.
Fig. 17 is a schematic view of a threaded shaft.
FIG. 18 is a schematic view of the mobile anti-slip sleeve at the front and the trigger pulled on at the rear.
FIG. 19 is a schematic view of the movable anti-skid cap at the rear end and the trigger not pulled at the front end.
FIG. 20 is a schematic view of the movable anti-skid cap at the rear end and the trigger pulled at the rear end.
1, a gas storage tank; 2. a cylinder block assembly; 3. a medicine storage bottle; 4. a microporous jet nozzle; 5. a plunger pump body; 6. a round head screw cap; 7. a spring I; 8. a spring seat; 9. a movable anti-skid sleeve; 10. a first linkage rod; 11. two-number springs; 12. a handle; 13. a round hole; 14. a round hole; 15. a trigger hole; 16. a screw I; 17. two-number screws; 18. a left handle shell; 19. a semicircular groove; 20. a semicircular groove; 21. screw holes; 22. a safety button hole; 23. a spring clamping groove; 24. a pin shaft hole I; 25. screw holes; 26. a right handle housing; 27. a semicircular groove; 28. a semicircular groove; 29. screw holes; 30. a safety button hole; 31. a spring clamping groove; 32. a pin shaft hole I; 33. screw holes; 34. an insurance button; 35. a cylinder of small diameter; 36. a cylinder of large diameter; 37. a trigger return spring; 38. a pin shaft I; 39. a trigger; 40. a pin shaft hole on the trigger; 41. a lower pin shaft hole of the trigger; 42. a trigger boss; 43. a pin shaft with a two-number; 44. a connecting rod; 45. a front pin hole of the connecting rod; 46. a connecting rod rear pin hole; 47. the pin shaft with the third number; 48. a linkage fork; 49. pin holes are formed on the linkage fork; 50. a lower pin hole of the linkage fork; 51. a cylindrical shaft screw; 52. a cross connecting 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 thereto.
The invention provides a veterinary needleless injector, which is characterized in that a firing control device is further improved on the basis of a pneumatic continuous needleless injector controlled by a pneumatic control slide column valve of patent application No. 201410669914.7 and a needleless injector of 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 those of the pneumatic continuous needleless injector controlled by the pneumatic control sliding column valve of the patent application No. 201410669914.7, and as shown in figure 1, the pneumatic continuous needleless injector comprises an air storage tank 1, a cylinder body component 2, a medicine storage bottle 3, a micropore jet nozzle 4, a plunger pump body 5 and a round head nut 6, and the connection relation is shown in the specification of Chinese patent publication No. CN 104399155A. The linkage part adopts some parts the same as patent application number 201520647931.0 'needleless injector', as shown in fig. 2, and comprises a first spring 7, a spring seat 8, a movable anti-slip cover 9, a first linkage rod 10 and a second spring 11, and the connection relation is described in Chinese patent novel authorized bulletin number CN 204932479U.
The improved firing control device of the needleless injector for animals is innovative technology of the invention, the structure of the improved firing control device is shown in fig. 3 to 20, and the device comprises: the improved needleless injector can realize 2 functions of automatic firing of a compressed animal after the trigger is fastened and firing of the compressed animal after the trigger is fastened on the same needleless injector by sequentially connecting the components into a brand new firing control device by the left handle shell 18, the right handle shell 26, the first screw 16, the second screw 17, the first pin shaft 38, the trigger 39, the safety button 34, the second pin shaft 43, the connecting rod 44, the third pin shaft 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.
The method comprises 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 is connected with the cylinder block component 2 in the main body by a two-number screw 17, and the right handle shell 26 is connected with the cylinder block component 2 in the main body by another two-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 screws 16; the first pin 38 penetrates through the trigger lower pin hole 41, and two ends of the first pin 38 extending out of the plane of the trigger 39 are respectively arranged in the first pin hole 24 and the first pin hole 32 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 front curved surface of the trigger 39 is provided with a finger pulling part which 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 arranged in the spring clamping groove 23 and the spring clamping groove 31; the other diameter cylinder of the two ends of the safety button 34 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 is positioned behind the upper half part of the back curved surface of the trigger 39; the two-number pin 43 penetrates through the trigger upper pin hole 40 and the connecting rod rear pin hole 46, so that the connecting rod 44 and the trigger 39 form movable connection capable of rotating along the two-number pin 43; a three-number pin 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-number pin 47; the linkage fork 48 is arranged in front of the round-head screw cap 6, and the round-head screw cap 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 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 thread 59 in the middle of the threaded shaft 57 with the threaded shaft hole 53 of the cross connecting nut 52; extending a cylinder in front of a step 58 of the threaded shaft 57 into a hole at the lower end of the first linkage rod 10, wherein the front end surface of the step 58 props against the rear end surface of the hole at the lower end 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, the front guide sleeve 55 is fixed 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 fixed in the handle 12; the two-number spring 11 is sleeved on the outer cylinder of the threaded shaft 57, the front end of the two-number spring 11 is propped against the cross connecting nut 52, and the rear end is propped against the front end face of the rear guide sleeve 56.
The left handle shell 18 and the right handle shell 26 are shown in fig. 7, 8 and 10, the left handle shell 18 is provided with a screw hole 21 connected with the cylinder block assembly 2 in the main body, the two-size screw 17 is used for connecting the left handle shell 18 with the cylinder block assembly 2 in the main body, the right handle shell 26 is also provided with a screw hole 29 connected with the cylinder block assembly 2 in the main body, the other two-size screw 17 is used for connecting the right handle shell 26 with the cylinder block assembly 2 in the main body, the left handle shell 18 and the right handle shell 26 are connected and combined into a complete handle 12 through the screw hole 25 and the screw hole 33 by using two one-size screws 16, and the whole needleless injector is made into a pistol-shaped whole.
Referring to fig. 7, a safety button hole 22 is formed in the middle of the left handle shell 18, a spring clamping groove 23 is formed in a cavity of the left handle shell 18, a pin shaft hole 24 of a first number is formed in the lower portion, close to the cavity, of the left handle shell 18, a semicircular groove 19 is formed in the front end portion of the cavity of the left handle shell 18, and a semicircular groove 20 is formed in the upper portion of the cavity of the left handle shell 18;
referring to fig. 8, a safety button hole 30 is formed in the middle of the right handle shell 26, a spring clamping groove 31 is formed in a cavity of the right handle shell 26, a first pin shaft hole 32 is formed in the lower portion, close to the lower portion, of the cavity of the right handle shell 26, a semicircular groove 27 is formed in the front end portion of the cavity of the right handle shell 26, and a semicircular groove 28 is formed in the upper portion of 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 to form the handle 12, the notches of the left handle shell 18 and the right handle shell 26 form a trigger hole 15; the semicircular groove 19 and the semicircular groove 27 are combined into a round hole 13 for fixing the front guide sleeve 55; the semicircular groove 20 and the semicircular groove 28 are combined into a round hole 14 for fixing the rear guide sleeve 56;
the pin 38, see fig. 12, is a cylindrical pin with a diameter smaller than the diameters of the pin hole 24, the pin hole 32 and the trigger lower pin hole 41.
The trigger 39 is a flat curved object, see fig. 4, 11 and 12, and has a finger-operated position above the front curved surface; on the flat plane, the upper end is provided with a trigger upper pin hole 40, and the lower end is provided with a trigger lower pin hole 41; the middle part of the back curved surface is provided with a round table type or cylindrical trigger boss 42, the trigger boss 42 is connected with the front end of the 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 front curved surface of trigger 39 extends through trigger aperture 15 beyond handle 12 at the point where the finger is pulled.
Referring to fig. 7, 8 and 12, a first pin 38 with a diameter smaller than that of the first pin hole 24, the first pin hole 32 and the 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 the 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 is shown in fig. 11 and 12, and may be a cylindrical spring or a tower spring.
Referring to fig. 3, 7 and 8, the trigger return spring 37 is fitted around the trigger boss 42 of the trigger 39 at its front end and held in the spring engaging groove 23 of the left handle case 18 and the spring engaging groove 31 of the right handle case 26 at its rear end. The trigger return spring 37 maintains the trigger 39 in a forward position in the absence of external force pulling.
The safety button 34 is shown in fig. 12 as 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.
Referring to fig. 4, 7, 8 and 12, the other diameter cylinder at each end of the safety button 34 is positioned behind the upper half of the back curve of the trigger 39 after passing through the safety button aperture 22 of the left handle shell 18 and the safety button aperture 30 of the right handle shell 26, respectively; the safety button 34 is axially movable within the safety button aperture 22 and the safety button aperture 30; axial movement of the safety button 34 changes the relative positions of the small diameter cylinder 35 and the large diameter cylinder 36 with the back curved surface of the trigger 39. The safety button 34 can be pushed from the safety button hole 22 of the left handle case 18 to move it rightward; the safety button 34 may also be depressed from the safety button aperture 30 of the right handle housing 26 to move it to the left. Trigger 39 can be pulled back when small diameter cylinder 35 of safety button 34 is facing the back curved position of trigger 39; when the large diameter cylinder 36 of the safety button 34 is facing the back curved position of the trigger 39, the trigger 39 cannot be pulled back;
the two-gauge pin 43, see fig. 12 and 14, is a cylindrical pin with a diameter smaller than the diameter of the pin hole 40 on the trigger and the rear pin hole 46 of the connecting rod.
The connecting rod 44 is shown in fig. 14, and is a long connecting rod with pin holes at two ends, one end is provided with a connecting rod front pin hole 45, and the other end is provided with a connecting rod rear pin hole 46.
Referring to fig. 4, 12 and 14, the two-number pin shaft 43 with the diameter smaller than the diameters of the pin shaft hole 40 on the trigger and the rear pin hole 46 of the connecting rod penetrates through the pin shaft hole 40 on the trigger and the rear pin hole 46 of the connecting rod, then the two ends of the two-number pin shaft 43 are riveted and expanded to prevent the two ends from falling off, the connecting rod 44 can rotate along the two-number pin shaft 43, and the connecting rod 44 and the trigger 39 form movable connection capable of rotating along the two-number pin shaft 43.
The three-pin 47 is shown in fig. 13 and 14, and is a cylindrical pin with a diameter smaller than the diameters of the lower pin hole 50 of the linkage fork and the front pin hole 45 of the connecting rod.
The linkage fork 48 is shown in fig. 13, and has a square block structure with fork-shaped ends, 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 diameters of the lower pin 50 of the linkage fork and the front pin 45 of the connecting rod penetrates through the lower pin 50 of the linkage fork and the front pin 45 of the connecting rod, and then two ends of the triple pin 47 are riveted and expanded to prevent the triple pin from falling off, so that the linkage fork 48 and the connecting rod 44 are connected into movable connection capable of rotating along the triple pin 47.
Referring to fig. 4, the fork 48 is positioned in front of the knob nut 6, and the knob nut 6 faces the middle region of the fork 48.
Referring to fig. 15, the cylindrical shaft screw 51 is a screw having 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 of the link fork.
Referring to fig. 15, the cross-shaped connecting nut 52 is a square and not limited to a square object, a threaded shaft hole 53 is formed in the middle of the cross-shaped connecting nut, a cylindrical shaft screw hole 54 is formed in the direction perpendicular to the axis of the threaded shaft hole 53, threads are respectively tapped, and the axes of the threaded shaft hole 53 and the cylindrical shaft screw hole 54 may or may not intersect.
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 cylindrical parts of the cylindrical shaft screws 51 are placed in the upper pin holes 49 of the 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 screw 51.
The screw shaft 57 is shown in fig. 4 and 17, the front section 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 screw 59 is arranged in the middle of the screw shaft 57, a section of optical axis 60 is arranged in front of the screw 59, a section of optical axis 61 is arranged behind the screw 59, the diameter of the cylinder in front of the step 58 is smaller than the aperture of the lower end hole of the first linkage rod 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 first linkage rod 10, and the front end face of the step 58 props against the rear end face of the lower end hole of the first linkage rod 10.
Referring to fig. 3, 15 and 17, a screw 59 in the middle of the screw shaft 57 is connected to the screw shaft hole 53 of the cross connection nut 52.
Referring to fig. 2, the two-gauge spring 11 is mounted on the outer cylinder behind the threads 59 of the threaded shaft 57 with its front end abutting the cross-shaped coupling nut 52 and its rear end abutting the front face of the rear guide sleeve 56, the two-gauge spring 11 maintaining the threaded shaft 57 in a forward position in the absence of external forces.
Referring to fig. 3, 4 and 17, an optical axis 60 of the screw shaft 57 is inside the front guide sleeve 55, an optical axis 61 of the screw shaft 57 is inside the rear guide sleeve 56, and the screw shaft 57 is axially movable back and forth.
The front guide sleeve 55 is a cylindrical shaft pin sleeve with flanges at two ends, and the diameter of the inner hole is larger than that of the optical axis 60, as shown in fig. 3 and 4.
Referring to fig. 3 and 5, the outer circumference of the front guide bush 55 is caught by the circular hole 13 of the handle 12, so that the front guide bush 55 is held at the front end of the handle 12.
The rear guide sleeve 56 is a cylindrical shaft sleeve with flanges at two ends, and the diameter of the inner hole is larger than that of the optical axis 61, as shown in fig. 3 and 4.
Referring to fig. 3 and 5, the outer circumference of the rear guide sleeve 56 is caught by the circular hole 14 of the handle 12. The rear guide sleeve 56 is held within the handle 12.
The needleless injector provided in this embodiment has the following working procedures:
referring to fig. 5, 6 and 12, when the safety button 34 is pushed from the safety button hole 22 of the left handle case 18 to the right, the small diameter cylinder 35 is opposite to the back curved surface of the trigger 39, and the trigger 39 can be pulled backward; when the safety button 34 is pushed from the safety button hole 30 of the right handle case 26 to the left, the large-diameter cylinder 36 is opposite to the back curved surface of the trigger 39, the trigger 39 is supported by the large-diameter cylinder 36, and the trigger 39 cannot be pulled backwards;
referring to fig. 18, when the movable anti-slip cover 9 does not press the injected animal, the first linkage rod 10 does not move backward, the threaded shaft 57, the cross connecting nut 52 and the cylindrical shaft screw 51 do not move backward, the upper linkage fork pin hole 49 on the linkage fork 48 is unchanged at the original position, at this time, the trigger 39 is pulled, the upper trigger pin hole 40 moves backward, the lower linkage fork pin hole 50 under the linkage fork 48 is pulled backward by the connecting rod 44, the linkage fork 48 rotates anticlockwise by taking the upper linkage fork pin hole 49 as the center of a circle, the round head nut 6 is pushed backward by the middle part of the linkage fork 48, but the backward pushing stroke is only 1/3 to 2/3 of the backward pushing stroke of the upper trigger pin hole 40, the stroke is less than the trigger position set by the pilot valve, the pilot valve cannot be triggered, and at this time, the injector cannot fire.
Referring to fig. 19, when the movable anti-slip cap 9 presses the injected animal, the first linkage rod 10 moves backward, the threaded shaft 57, the cross connection nut 52 and the cylindrical shaft screw 51 move backward, the upper linkage fork pin hole 49 on the linkage fork 48 moves backward, the trigger 39 is not pulled, the upper trigger pin hole 40 does not move, the lower linkage fork pin hole 50 under the linkage fork 48 and the link rod 44 do not move backward, the linkage fork 48 rotates clockwise around the lower linkage fork pin hole 50 as a center of a circle, the middle part of the linkage fork 48 pushes the round head nut 6 backward, but the backward pushing stroke is only 1/3 to 2/3 of the backward pushing stroke of the movable anti-slip cap 9, the stroke does not reach the trigger position set by the pilot valve, the pilot valve cannot be triggered, and the injector cannot be fired at the moment.
Referring to fig. 20, when the trigger 39 is fastened, the trigger upper pin hole 40 moves backward, the linkage fork lower pin hole 50 below the linkage fork 48 is pulled backward by the connecting rod 44, the linkage fork lower pin hole 50 moves backward, the linkage fork 48 rotates counterclockwise with the linkage fork upper pin hole 49 as the center of a circle, the injector is pressed again, when the movable anti-slip cover 9 presses the injected animal, the first linkage rod 10 moves backward, the threaded shaft 57, the cross connecting nut 52 and the cylindrical shaft screw 51 move backward, the linkage fork upper pin hole 49 above the linkage fork 48 also moves backward, the middle part of the linkage fork pushes the round head nut 6 backward, and the backward pushing stroke is 1/2 of the sum of the backward moving strokes of the trigger upper pin hole 40 and the movable anti-slip cover Cheng Jia, and the stroke is enough to trigger the pilot valve to trigger, and the injector starts to fire. This process achieves: after the trigger 39 is fastened, the movable anti-slip sleeve 9 of the injector is pressed tightly to the injected animal to automatically trigger.
Referring to fig. 20, when the movable anti-slip cap 9 presses the injected animal, the first linkage rod 10 moves backward, the threaded shaft 57, the cross connecting nut 52 and the cylindrical shaft screw 51 all move backward, the upper linkage fork pin hole 49 on the linkage fork 48 also moves backward, the trigger 39 is pulled again, the upper trigger pin hole 40 moves backward, the second pin 43 moves backward, the lower linkage fork pin hole 50 under the linkage fork 48 is pulled backward by the connecting rod 44, the whole linkage fork 48 moves backward, the round head nut 6 is pushed backward by the middle part of the linkage fork, the backward pushing stroke is 1/2 of the sum of the backward strokes of the upper trigger pin hole 40 of the movable anti-slip cap 9, and the backward pushing stroke is enough to trigger the pilot valve to trigger the injector. This process achieves: the movable anti-slip sleeve 9 presses the injected animals and then pulls 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 screw number one; a screw I; the improved needleless injector can realize 2 functions of automatic firing of a compressed animal after the trigger is fastened and firing of the compressed animal after the trigger is fastened on the needleless injector.
Claims (5)
1. The utility model provides a veterinary needleless injector, includes main part and percussion controlling means, characterized by, percussion controlling means mainly comprises left handle shell (18), right handle shell (26), trigger (39), insurance button (34), connecting rod (44), linkage fork (48), preceding uide bushing (55), back uide bushing (56), screw spindle (57) that link to each other in proper order, wherein: the upper parts of the left handle shell and the right handle shell are respectively connected with a cylinder body component (2) in the main body by screws, and the side parts of the left handle shell and the right handle shell are connected and combined into a complete handle (12) by screws, so that the whole needleless injector is formed into a pistol-shaped whole;
the front guide sleeve (55) and the rear guide sleeve (56) are cylindrical shaft pin sleeves with flanges at two ends, and the diameter of an inner hole is larger than that of the optical axis (60);
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 first linkage rod (10) and extends into the hole to play a role in positioning, and the diameter of the step (58) is larger than the aperture of the lower end hole of the first linkage rod (10);
the left handle shell and the right handle shell are provided with a safety button hole in the middle, a spring clamping groove is arranged in a cavity of the left handle shell and the right handle shell, a pin shaft hole is arranged in the cavity of the left handle shell and the right handle shell close to the lower part of the left handle shell, a semicircular groove is arranged at the front end part in the cavity of the left handle shell, and a semicircular groove is arranged at the upper part in the cavity of the right handle shell; after the left and right handle shells are combined into a handle (12), the notches of the two handle shells form a trigger hole (15), the four semicircular grooves of the two handle shells form two circular holes, and the two circular holes are used for fixing a front guide sleeve (55) and a rear guide sleeve (56);
the connecting rod (44) is a strip-shaped connecting rod with pin holes at two ends, one end is provided with a connecting rod front pin hole (45), and the other end is provided with a connecting rod rear pin hole (46); two-number pin shafts (43) with diameters smaller than the diameters of the pin shaft holes (40) on the trigger and the rear pin holes (46) of the connecting rod penetrate through the pin shaft holes (40) on the trigger and the rear pin holes (46) of the connecting rod, then the two ends of the two-number pin shafts (43) are riveted and expanded to prevent the two ends from falling off, and the connecting rod (44) can rotate along the two-number pin shafts (43), so that the connecting rod (44) and the trigger (39) form movable connection capable of rotating along the two-number pin shafts (43);
the linkage fork (48) is of a square block structure with fork-shaped ends, and fork-shaped parts at the two ends are respectively provided with an upper linkage fork pin hole (49) and a lower linkage fork pin hole (50); a triple pin shaft (47) with the diameter smaller than the diameter of the lower pin hole (50) of the linkage fork and the diameter of the front pin hole (45) of the connecting rod penetrates through the lower pin hole (50) of the linkage fork and the front pin hole (45) of the connecting rod, and then the two ends of the triple pin shaft (47) are riveted and expanded to prevent the triple pin shaft from falling off, so that the linkage fork (48) and the connecting rod (44) are connected into movable connection capable of rotating along the triple pin shaft (47); the linkage fork (48) is arranged in front of the round-head screw cap (6), and the round-head screw cap (6) is opposite to the middle area of the linkage fork (48);
a cross connecting nut (52) is adopted, a threaded shaft hole (53) which penetrates is arranged in the middle of the cross connecting nut, a cylindrical shaft screw hole (54) which penetrates is arranged in the axial direction perpendicular to the threaded shaft hole (53), threads are respectively arranged on the threaded shaft hole (53) and the cylindrical shaft screw hole (54), and the axes of the threaded shaft hole (53) and the cylindrical shaft screw hole (54) are intersected or not intersected; 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);
the front end surface of the step (58) props against the rear end surface of the hole at the lower end of the first linkage rod (10); the middle screw thread (59) of the screw shaft (57) is connected with the screw shaft hole (53) of the cross connecting nut (52), the front section optical axis (60) of the screw shaft (57) is arranged in the front guide sleeve (55), the rear section optical axis (61) of the screw shaft (57) is arranged in the rear guide sleeve (56), and the screw shaft (57) can axially move forwards and backwards.
2. The needleless injector for animals according to claim 1, wherein said trigger (39) is a flat curved shaped body, having a finger grip portion above the front curved surface; on the flat plane, the upper end is provided with a trigger upper pin shaft hole (40), and the lower end is provided with a trigger lower pin shaft hole (41); the middle part of the back curved surface is provided with a round table type, conical type or cylindrical trigger boss (42), 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 a spring clamping groove; the front curved surface of the trigger (39) is provided with a finger pulling part which extends out of the handle (12) through the trigger hole (15); a pin shaft (38) with the diameter smaller than the diameters of the first pin shaft hole (24), the second pin shaft hole (32) and the trigger lower pin shaft hole (41) penetrates through the trigger lower pin shaft hole (41), two ends of the pin shaft (38) extending 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).
3. The needleless injector for animals according to claim 1, wherein said safety button (34) is a multi-section cylinder of different diameters, a section of cylinder (35) of small diameter being provided in the middle, and a section of cylinder (36) of large diameter being provided immediately adjacent to the cylinder (35) of small diameter; 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) to be positioned behind the upper half part of the back curved surface of the trigger (39), and the safety button (34) can axially move in the hole of the safety button hole so as to change the mutual positions of the cylinder with small diameter and large diameter and the back curved surface of the trigger (39).
4. A needleless injector for animals according to claim 3 wherein the safety button (34) is movable to the right and left upon being pressed from the safety button holes of the left and right handle shells, respectively; when the small diameter cylinder (35) is opposite to the back curve position of the trigger (39), the trigger (39) can be pulled backwards; when the large diameter cylinder (36) is facing the back curved surface position of the trigger (39), the trigger (39) cannot be pulled back.
5. The needleless injector for animals according to claim 1, wherein the outer circle of the front guide sleeve (55) is blocked by a round hole (13) of the handle (12) so that the front guide sleeve (55) is fixed at the front end of the handle (12); the outer circle of the rear guide sleeve (56) is clamped by the other round hole (14) of the handle (12), so that the rear guide sleeve (56) is fixedly held on the handle (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110503848.6A CN113331980B (en) | 2021-05-10 | 2021-05-10 | Needleless injector for animals |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110503848.6A CN113331980B (en) | 2021-05-10 | 2021-05-10 | Needleless injector for animals |
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| CN113331980A CN113331980A (en) | 2021-09-03 |
| CN113331980B true CN113331980B (en) | 2024-02-23 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113331980A (en) | 2021-09-03 |
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