CN213146049U - Grease gun - Google Patents

Abstract

The utility model discloses a grease gun, be in including the rifle body and one end pin joint handle on the rifle body, the rifle is internal to have oil feed passageway, one-way valve pocket and the passageway of producing oil that communicates in proper order, be equipped with check valve spring, guide ring, case and fuel feeding self-locking module in the check valve pocket, the case with guide ring sliding fit, just the end that stretches out of case through a pull rod with the handle is connected, the operation the handle makes the case moves backward, the check valve spring is used for making the case resets, fuel feeding self-locking module can make the case keeps the state of moving backward, and then keeps the fuel feeding state. The utility model discloses laborsaving, high-efficient.

Description

Grease gun

Technical Field

The utility model relates to a grease gun.

Background

The grease gun is a manual tool for filling lubricating grease, and is mainly applied to the fields of automobiles, machining equipment, engineering machinery, factory production equipment and the like, lubricating oil is added during maintenance, the traditional grease gun is of a manual piston type, the grease gun is used for filling grease into the automobiles, time and labor are wasted, the phenomenon that the working efficiency is not affected by the fact that a fuel spray nozzle is opened due to the fact that a crank needs to be pressed for a long time is also caused, along with the vigorous development of the domestic automobile industry, the performance of the maintenance tools is changed day by day, the grease gun for filling the grease into the movable hinge part of the automobile by using compressed air as a power source is provided, although the process of manually pushing the piston is omitted, the technical defect that the crank needs to be manually pressed during long-time grease filling still exists.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a convenient to use, laborsaving, efficient grease gun.

In order to achieve the above object, the utility model provides a following technical scheme:

a grease gun comprises a gun body and a handle with one end pivoted on the gun body, wherein an oil inlet channel, a one-way valve cavity and an oil outlet channel which are sequentially communicated are arranged in the gun body, a one-way valve spring, a guide ring, a valve core and an oil supply self-locking module are arranged in the one-way valve cavity, the valve core is in sliding fit with the guide ring, the extending end of the valve core is connected with the handle through a pull rod, the handle is operated to enable the valve core to move backwards, the one-way valve spring is used for enabling the valve core to reset, and the oil supply self-locking module can enable the valve core to keep a backwards moving state so as to keep an oil supply state.

Further, the rifle body is the pistol shape, the oil feed passageway is located in the handle of the rifle body, one-way valve pocket and oil outlet channel all are located in the barrel of the rifle body, just the handle pin joint is on the barrel.

Furthermore, the oil supply self-locking module comprises a fixed guide sleeve positioned in the one-way valve cavity, and a buckle spring, a front gear sleeve and a rear gear sleeve which are sequentially sleeved on the valve core, wherein the buckle spring enables the front gear sleeve to be always contacted with the end face of the rear gear sleeve and enables the rear gear sleeve to be pressed on the pull rod in a propping manner, three first limiting straight grooves which are uniformly distributed are arranged on the inner hole wall of the fixed guide sleeve, trisection guiding convex teeth are arranged on one end face of the inner hole of the fixed guide sleeve, the guiding convex teeth are positioned between two adjacent first limiting straight grooves and consist of continuous first oblique teeth and second oblique teeth, before the rear gear sleeve is separated from the fixed guide sleeve, the first limiting straight grooves are in sliding fit with corresponding first outward convex teeth positioned on the outer circular surface of the front gear sleeve and corresponding outward convex teeth positioned on the outer circular surface of the rear gear sleeve, convex teeth of the front gear sleeve end face gear ring of the front gear sleeve are meshed 1/3 gear faces with concave teeth of the rear gear sleeve end face gear ring of the rear gear sleeve; after the rear gear sleeve is separated from the fixed guide sleeve, the buckle spring pushes the end face teeth of the front gear sleeve to be completely meshed with the end face teeth of the rear gear sleeve, the rear gear sleeve is forced to rotate, so that the first limiting straight groove is staggered with the outer convex teeth of the rear gear sleeve, when the valve core contracts, the convex teeth on the end face of the outer convex teeth of the rear gear sleeve rotate the rear gear sleeve under the guiding action of the first inclined teeth, and when the rear gear sleeve stops rotating, the convex teeth of the gear ring on the end face of the front gear sleeve are meshed with the concave teeth of the gear ring on the end face of the rear gear sleeve to form 1/3 gear faces; when the rear gear sleeve is separated from the fixed guide sleeve again, the rear gear sleeve is completely meshed and rotated again under the action of the buckle spring and the front gear sleeve, when the valve core is contracted, the convex teeth on the end face of the convex teeth of the rear gear sleeve enable the rear gear sleeve to rotate under the guiding action of the second inclined teeth until the convex teeth of the rear gear sleeve enter the corresponding first limiting straight groove, and at the moment, the convex teeth of the gear ring on the end face of the front gear sleeve are meshed with the concave teeth of the gear ring on the end face of the rear gear sleeve to form 1/3 gear faces.

Further, the front and rear gear sleeve end face ring gears each have six meshing teeth.

Furthermore, the inner hole wall of the fixed guide sleeve is also provided with three second limiting straight grooves which are uniformly distributed, the first limiting straight grooves and the second limiting straight grooves are arranged in a crossed manner, the inner diameters of the second limiting straight grooves are smaller than that of the first limiting straight grooves, and the second limiting straight grooves are in sliding fit with corresponding second convex teeth on the outer circular surface of the front gear sleeve.

Furthermore, the valve further comprises a sealing ring arranged in the one-way valve cavity, the sealing ring is positioned between the guide ring and the limiting nut, and the sealing ring is arranged on the valve core in a sealing manner.

Furthermore, the fixed guide sleeve is limited in the mounting cavity of the limiting nut by a elastic check ring.

Further, the electric torch comprises a small electric torch, and the small electric torch is limited on the top of the gun body through a torch cover cap.

Furthermore, the pull rod is U-shaped, the gun body is located in the U-shaped cavity of the pull rod, the pull rod is connected with a gasket sleeved on the valve core, the rear gear sleeve is pressed on the inner end face of the gasket through the buckle spring, and a fixing nut connected to the valve core is pressed on the outer end face of the gasket.

Further, still include rifle head and barrel, the one end of barrel through connect with the oil-out intercommunication of the rifle body, the other end of barrel with the rifle head is connected.

According to the above technical solution, the utility model has the advantages that: the oil supply self-locking module is arranged, and the oil supply self-locking module can lock the valve core to enable the one-way valve to be opened for continuous oil supply, so that labor is saved and the use is efficient; the grease gun is in an open state by pressing the handle once, and is in a closed state by pressing the handle once again, so that the grease gun is convenient to use; the small flashlight is convenient to use under the condition of dark light.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts. In the drawings:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view of a portion a of fig. 1.

Fig. 3 is a front cross-sectional view of the front sleeve of the present invention.

Fig. 4 is a top view of the front sleeve of the present invention.

Fig. 5 is a front half sectional view of the rear sleeve of the present invention.

Fig. 6 is a plan view of the rear sleeve gear of the present invention.

Fig. 7 is a front view of the fixed guide sleeve of the present invention.

Fig. 8 is a schematic view of the internal structure of the fixed guide sleeve of the present invention.

Fig. 9 is a schematic structural view of the tie rod of the present invention.

Labeled as: the gun comprises a gun head 1, a hose 2, a connector 3, a handle 4, an A-shaped pin shaft 5, a B-shaped pin shaft 6, a gun body 7, an oil inlet channel 71, a one-way valve cavity 72, an oil outlet channel 73, a pull rod 8, a one-way valve spring 9, a guide ring 10, a sealing ring 11, a buckle spring 12, a front gear sleeve 13, a first outer convex tooth 131, a second outer convex tooth 132, a front gear sleeve end face gear ring 133, a fixed guide sleeve 14, a first limit straight groove 141, a second limit straight groove 142, a first inclined tooth 143, a second inclined tooth 144, an elastic check ring 15, a rear gear sleeve 16, a rear gear sleeve outer convex tooth 161, a rear gear sleeve end face gear ring 162, a gasket 17, a valve core 18, a fixed nut 19, a limit nut 20, a small flashlight 21 and a flashlight cap 22.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 9, a grease gun as shown in fig. 1 and 2 includes a gun body 7, a gun head 1, a gun barrel 2, and a handle 4 with one end pivotally connected to the gun body 7 through an a-shaped pin 5, one end of the gun barrel 2 is communicated with an oil outlet of the gun body 7 through a joint 3, the other end of the gun barrel 2 is connected to the gun head 1, the gun body 7 has an oil inlet channel 71, a one-way valve cavity 72, and an oil outlet channel 73 that are sequentially communicated with each other, the oil inlet channel 71 is located in a handle of the gun body 7, the one-way valve cavity 72 is coaxially disposed with the oil outlet channel 73, a one-way valve spring 9, a guide ring 10, a sealing ring 11, a limit nut 20, a valve core 18, and an oil supply self-locking module are disposed in the one-way valve cavity 72, the limit nut 20 is fixedly disposed at an outer opening of the one-way valve cavity 72, the sealing ring 11 is located, the check valve spring 9 is sleeved on the valve core 18, the valve core 18 is in sliding fit with the guide ring 10, the sealing ring 11 is sleeved on the valve core 18 in a sealing mode, the oil supply self-locking module is located in the installation cavity of the limiting nut 20, one end of a pull rod 8 is fixedly connected with the extending end of the valve core 18, the other end of the pull rod 8 is in pivot connection with the handle 4 through a B-shaped pin shaft 6, the handle 4 is operated to enable the valve core 18 to move backwards, when the oil supply self-locking module enables the valve core 18 to keep the backward moving state, the oil supply state is kept, the use is convenient, the time and the labor are saved, when the oil supply self-locking module releases the valve core 18, the check valve spring 9 is used for enabling the valve core 18 to reset and stop supplying oil, wherein the gun body is made of aluminum alloy materials, and the weight is greatly.

The gun body 7 is in a pistol shape, the oil inlet channel 71 is positioned in a handle of the gun body 7, the one-way valve cavity 72 and the oil outlet channel 73 are both positioned in a barrel of the gun body 7, and the handle 4 is pivoted on the barrel.

As shown in fig. 1 and fig. 2, the present application further includes a small flashlight 21, the small flashlight 21 is limited on the top of the barrel of the gun body 7 by a flashlight cap 22, and a lighting device is installed above the gun body 7, so as to facilitate the lighting of a user under the condition of insufficient brightness.

As shown in fig. 2, 3, 4, 5, 6, 7 and 8, the oil supply self-locking module includes a fixed guide sleeve 14 defined in the installation cavity of the limit nut 20 by a circlip 15, and a snap spring 12, a front tooth sleeve 13 and a rear tooth sleeve 16 sequentially sleeved on the valve core 18 from inside to outside, the limit nut 20 is fixedly disposed at the outer opening of the one-way valve cavity 72, the snap spring 12 is located between the bottom surface of the installation cavity and the front tooth sleeve 13, the snap spring 12 makes the front tooth sleeve 13 and the rear tooth sleeve 16 always in contact with each other and makes the rear tooth sleeve 16 press against the pull rod 8, the inner wall of the fixed guide sleeve 14 is provided with three first limit straight grooves 141 uniformly distributed, the inner diameter of the first limit straight groove 141 is greater than the outer diameter of the rear tooth sleeve outer convex tooth 161, one end surface of the inner hole of the fixed guide sleeve 14 is provided with trisection guide convex teeth, the guide convex teeth are positioned between two adjacent first limiting straight grooves 141, each guide convex tooth is composed of a first continuous inclined tooth 143 and a second continuous inclined tooth 144, before the rear gear sleeve 16 is separated from the fixed guide sleeve 14, the first limiting straight grooves 141 are in sliding fit with a corresponding first outer convex tooth 131 positioned on the outer circular surface of the front gear sleeve 13 and a corresponding rear gear sleeve outer convex tooth 161 positioned on the outer circular surface of the rear gear sleeve 16, and the convex teeth of the front gear sleeve end face gear ring 133 of the front gear sleeve 13 are meshed with 1/3 gear faces of the concave teeth of the rear gear sleeve end face gear ring 162 of the rear gear sleeve 16.

As shown in fig. 4, 6 and 7, the inner hole wall of the fixed guide sleeve 14 is further provided with three second limiting straight grooves 142 which are uniformly distributed, the first limiting straight grooves 141 and the second limiting straight grooves 142 are arranged in a crossed manner, the inner diameter of the second limiting straight grooves 142 is smaller than the inner diameter of the first limiting straight grooves 141, the inner diameter of the second limiting straight grooves 142 is smaller than the outer diameter of the rear gear sleeve outer teeth 161, and the second limiting straight grooves 142 are in sliding fit with the corresponding second outer teeth 132 on the outer circumferential surface of the front gear sleeve 13, so as to increase the contact area between the front gear sleeve 13 and the rear gear sleeve 16.

When the oil supply device needs to be opened for oil supply, the operating handle 4 enables the pull rod 8 to move, so that the valve core 18 is driven to move backwards, the buckle spring 12 pushes the front gear sleeve 13 and the rear gear sleeve 16 to move together, the valve core 18 moves backwards, the valve head of the valve core 18 is separated from an oil inlet of the oil outlet channel 73, the one-way valve cavity 72 is communicated with the oil outlet channel 73, and at the moment, oil can be sprayed out through the gun barrel 2 and the gun head 1; when the rear gear sleeve 16 is separated from the fixed guide sleeve 14, the operating handle 4 is loosened, at this time, because the convex teeth of the front gear sleeve end face gear ring 133 are engaged with the concave teeth of the rear gear sleeve end face gear ring 162 of the rear gear sleeve 16 before the position limitation of the fixed guide sleeve 14 is separated, under the action of the buckle spring 12, the front gear sleeve end face gear ring 133 is forced to be completely engaged with the rear gear sleeve end face gear ring 162, the rear gear sleeve 16 is forced to rotate, the rear gear sleeve outer convex teeth 161 are dislocated with the first limiting straight groove 141, the tooth tops of the convex teeth on the end face of the rear gear sleeve outer convex teeth 161 are just fallen on the inclined plane of the first inclined teeth 143, and the tooth tops of the convex teeth are close to the highest position of the first inclined teeth 143, and when the handle 4 is released at this time, under the spring force of the one-way valve spring 9 and the guiding action of the first inclined teeth 143, the corresponding convex teeth on the end face of the rear gear sleeve outer convex teeth 161 slide from the tops of the corresponding first inclined teeth 143 to the first inclined teeth 143 At this time, because the outer diameter of the outer convex tooth of the rear gear sleeve 16 is larger than the inner diameter of the second limit straight groove 142 of the fixed guide sleeve 14, which is positioned at the root of the first oblique tooth 143, the rear gear sleeve 16 is limited at the root of the inclined wall of the first oblique tooth 143 of the fixed guide sleeve 14, the opening and positioning of the valve core 18 is completed, and at this time, because of the action of the first oblique tooth 143, the rear gear sleeve 16 is driven to rotate by an angle, and the meshing of the end face teeth of the front gear sleeve 13 and the rear gear sleeve 16 is 1/3 teeth (for the next rotation); when the oil supply operation needs to be stopped, the handle 4 is pulled again to drive the valve core 18 and the rear gear sleeve 16 to retreat, the rear gear sleeve 16 is separated from the first helical tooth 143 of the fixed guide sleeve 14 again, the front gear sleeve end face gear ring 133 is forced to be completely meshed with the rear gear sleeve end face gear ring 162 under the action of the buckle spring 12, and the rear gear sleeve 16 further rotates to a certain angle towards the second helical tooth 144, at this time, the tooth top of the corresponding convex tooth on the end face of the rear gear sleeve outer convex tooth 161 just falls on the inclined plane of the second helical tooth 144, and the tooth top of the convex tooth is close to the highest position of the second helical tooth 144, when the handle 4 is released, under the spring force of the one-way valve spring 9 and the guide effect of the inclined plane of the second helical tooth 144, the corresponding convex tooth on the end face of the rear gear sleeve outer convex tooth 161 slides from the top of the corresponding second helical tooth 144 to the first limit straight groove 141 at the root of the second helical tooth 144, the rear gear sleeve 16 is driven to enter the first limiting straight groove 141 of the fixed guide sleeve 14, and because the inner diameter of the first limiting straight groove 141 is larger than the outer diameter of the rear gear sleeve outer convex tooth 161, the rear gear sleeve 16 can freely slide back and forth in the first limiting straight groove 141, the valve core 18 returns to the hole wall of the oil outlet channel 73, the flow channel in the gun body 7 is closed at the moment, and the oil closing action is completed. The oil supply self-locking module replaces manual long-time handle pressing, so that the operation is complex, and labor is saved and the use is convenient.

Preferably, the front and rear sleeve end ring gears 133, 162 each have six lobes.

As shown in fig. 1, 2 and 9, the pull rod 8 is U-shaped, the gun body 7 is located in the U-shaped cavity of the pull rod 8, the pull rod 8 is connected with a washer 17 sleeved on the valve core 18, the snap spring 12 enables the rear gear sleeve 16 to press against an inner end surface of the washer 17, and a fixing nut 19 connected to the valve core 18 presses against an outer end surface of the washer 17.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A grease gun comprises a gun body (7) and a handle (4) with one end pivoted on the gun body (7), and is characterized in that an oil inlet channel (71), a one-way valve cavity (72) and an oil outlet channel (73) which are sequentially communicated are arranged in the gun body (7), a one-way valve spring (9), a guide ring (10), a valve core (18) and an oil supply self-locking module are arranged in the one-way valve cavity (72), the valve core (18) is in sliding fit with the guide ring (10), the extending end of the valve core (18) is connected with the handle (4) through a pull rod (8), the handle (4) is operated to enable the valve core (18) to move backwards, the one-way valve spring (9) is used for enabling the valve core (18) to reset, and the oil supply self-locking module can enable the valve core (18) to keep the moving backwards so as to keep the oil supply state.

2. Grease gun according to claim 1, characterized in that the gun body (7) is pistol-shaped, the oil inlet passage (71) is located in the handle of the gun body (7), the one-way valve chamber (72) and the oil outlet passage (73) are both located in the barrel of the gun body (7), and the handle (4) is pivoted to the barrel.

3. The grease gun according to claim 1, wherein the grease supply self-locking module comprises a fixed guide sleeve (14) located in a one-way valve cavity (72), and a snap spring (12), a front gear sleeve (13) and a rear gear sleeve (16) which are sequentially sleeved on the valve core (18), the snap spring (12) enables the front gear sleeve (13) and the rear gear sleeve (16) to be always contacted, and enables the rear gear sleeve (16) to be pressed against the pull rod (8), three first limiting straight grooves (141) are uniformly distributed on the inner hole wall of the fixed guide sleeve (14), trisection guiding convex teeth are arranged on one end surface of an inner hole of the fixed guide sleeve (14), the guiding convex teeth are located between two adjacent first limiting straight grooves (141), the guiding convex teeth are composed of continuous first oblique teeth (143) and second oblique teeth (144), the rear gear sleeve (16) is separated from the fixed guide sleeve (14), the first limiting straight groove (141) is in sliding fit with a corresponding first convex tooth (131) on the outer circular surface of the front gear sleeve (13) and a corresponding convex tooth (161) on the outer circular surface of the rear gear sleeve (16), and the convex tooth of the front gear sleeve end face gear ring (133) of the front gear sleeve (13) is meshed with the concave tooth of the rear gear sleeve end face gear ring (162) of the rear gear sleeve (16) to form 1/3 gear faces; after the rear gear sleeve (16) is separated from the fixed guide sleeve (14), the buckle spring (12) pushes the end face teeth of the front gear sleeve (13) to be completely meshed with the end face teeth of the rear gear sleeve (16) to force the rear gear sleeve (16) to rotate to enable the first limiting straight groove (141) and the rear gear sleeve external convex teeth (161) to be staggered, when the valve core (18) contracts, convex teeth on the end face of the rear gear sleeve external convex teeth (161) enable the rear gear sleeve (16) to rotate under the guiding action of the first inclined teeth (143), and when the rear gear sleeve (16) stops rotating, convex teeth of the front gear sleeve end face gear ring (133) are meshed with concave teeth of the rear gear sleeve end face gear ring (162) to form 1/3 gear faces; when the rear gear sleeve (16) is separated from the fixed guide sleeve (14) again, the rear gear sleeve (16) is completely meshed and rotates again under the action of the buckle spring (12) and the front gear sleeve (13), when the valve core (18) contracts, the convex teeth on the end surface of the outer convex teeth (161) of the rear gear sleeve enable the rear gear sleeve (16) to rotate under the guiding action of the second inclined teeth (144) until the outer convex teeth (161) of the rear gear sleeve enter the corresponding first limiting straight groove (141), and at the moment, the convex teeth of the gear ring (133) on the end surface of the front gear sleeve are meshed with the concave teeth (1/3) on the gear ring (162) on the end surface of the rear gear sleeve.

4. Grease gun according to claim 3, characterized in that the front and rear sleeve-face toothed rings (133, 162) each have six lobes.

5. The grease gun as recited in claim 3, wherein the inner hole wall of the fixed guide sleeve (14) is further provided with three second limiting straight grooves (142) which are uniformly distributed, the first limiting straight grooves (141) and the second limiting straight grooves (142) are arranged in a crossed manner, the inner diameter of the second limiting straight grooves (142) is smaller than that of the first limiting straight grooves (141), and the second limiting straight grooves (142) are in sliding fit with the corresponding second outward convex teeth (132) on the outer circumferential surface of the front gear sleeve (13).

6. The grease gun according to claim 3, further comprising a sealing ring (11) disposed in the check valve cavity (72), wherein the sealing ring (11) is located between the guide ring (10) and the stop nut (20), and the sealing ring (11) is sealingly sleeved on the valve core (18).

7. Grease gun according to claim 6, characterized in that the fixing guide (14) is confined in the mounting cavity of the limit nut (20) by means of a circlip (15) of the fixing guide (14).

8. Grease gun according to claim 1, characterized in that it further comprises a small torch (21), which small torch (21) is delimited at the top of the gun body (7) by a torch cap (22).

9. The grease gun according to claim 3, characterized in that the pull rod (8) is U-shaped, the gun body (7) is located in the U-shaped cavity of the pull rod (8), the pull rod (8) is connected with a washer (17) sleeved on the valve core (18), the snap spring (12) enables the rear gear sleeve (16) to be pressed against the inner end face of the washer (17), and a fixing nut (19) connected to the valve core (18) is pressed against the outer end face of the washer (17).

10. The grease gun according to claim 1, further comprising a gun head (1) and a gun barrel (2), wherein one end of the gun barrel (2) is communicated with an oil outlet of the gun body (7) through a joint (3), and the other end of the gun barrel (2) is connected with the gun head (1).

Images