JPH0736239Y2 - Electric hand grease gun - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grease injection press-fitting device called a grease gun, and more particularly to an electric and portable grease gun using a battery motor.

[0002]

2. Description of the Related Art As a conventional hand grease gun, for example, as shown in FIG. 8, a hand lever 21 using a lever is manually operated to push a spring 15 from a grease cassette 45 of a grease tank 11 to a plunger room. Some push the grease pushed out to 23 in the direction of the check valve 27 by the piston plunger 22, and push the grease from the tip of the grease pipe 28 with a discharge pressure of 100 Kg / cm2 or more, and as shown in FIG. Some can easily inject grease into various devices at a discharge pressure of 500 kg / cm 2 or more using compressed air.

A grease gun 10 shown in FIG. 9 which uses this compressed air receives low pressure compressed air of 10 kg / cm 2 or less in a connector 31 by means of a rubber hose from an air compressor (not shown), and the compressed air is appropriately supplied to a grease tank. 11 is sent to the rear chamber 13 to urge the partition wall 12 forward, so that the grease in the grease cassette 45 is sent from the flow path 42 to the plunger room 23, and the compressed air received by the connector 31 by the switching valve 33 is sent. Piston room sent to the back room 36, piston 35
And the plunger 22, which is the piston rod, is moved forward to slide the plunger 22 back and forth
The grease sent from 42 is pushed out with high pressure, and the check valve
When it is sent in the direction of the grease pipe through 27 and the finger is released from the operating portion 34 of the switching valve 33, the rear chamber 36 of the piston room is brought to the atmospheric pressure, and the spring 37 causes the piston 35 and the plunger 22 to retract.

[0004]

[Problems to be Solved by the Invention] Since the hand grease gun using the lever described above operates the hand lever by hand, if there are many grease gun injection points, fatigue will increase,
Also, depending on the device, high grease injection pressure is required,
There are some cases where it cannot be used. A hand grease gun using compressed air can easily inject grease at high pressure, but it has a drawback that the working range is limited because the air hose needs to be routed around.

[0005]

The present invention uses a battery-powered hand motor, and a grease pipe is provided in parallel with the central axis of a grease tank for storing a grease cassette.
A check valve is provided at the base of the grease pipe, a plunger whose center axis coincides with the center axis of the grease pipe, and a horizontal bevel gear with a crank pin for moving the plunger forward and backward are provided on the horizontal umbrella. Provide a vertical bevel gear with a smaller diameter than the horizontal bevel gear that meshes with the gear,
A coupler connecting the rotary shaft of the hand motor and the drive shaft is provided at the rear end of the drive shaft of the vertical bevel gear, and the rotary shaft of the hand motor is aligned with the position of the coupler and the rotary shaft axis of the hand motor is set to the grease. The battery type hand motor is fixed by providing a motor coupling portion for fixing the hand motor in parallel with the axis of the tank and the axis of the grease pipe.

[0006]

[Operation] Since the present invention uses a battery-powered hand motor, grease can be injected by a switch operation, and the grease gun can be easily carried and moved. Further, since the horizontal bevel gear and the vertical bevel gear are used when converting the rotation of the hand motor into the forward / backward movement of the plunger, the rotation axis direction of the hand motor and the central axis direction of the plunger are easily parallel to each other. be able to.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A hand grease gun according to the present invention, as shown in FIG.
The grease gun 10 is a grease gun 10 which has a grease pipe 28 which is parallel to the grease tank 11.

Grease tank 11 of this grease gun 10
The grease cassette 45 is housed inside, and the partition wall in contact with the bottom of the grease cassette 45 is moved forward by the spring 15, so that the grease in the grease cassette 45 is poured into the grease flow passage 42 formed in the connecting pipe 41. is there. A chain 17 for retracting the partition when the grease cassette 45 is replaced is also housed inside the grease tank 11, and a ring 18 is provided at the rear end of the chain 17 to provide a chain.
17 drawers are easy.

The grease passage 42 is located at a position displaced from the central axis of the grease tank 11.
The plunger room 23 provided so as to form a central axis parallel to the central axis of the grease tank 11 and the grease cassette mounting port 47 of the grease tank 11 are connected, and the air vent valve 43 provided at the end of the connecting pipe 41 is also connected. It is connected. Further, a grease pipe 28 having the same axis as the plunger room 23 is provided at the front end of the cylinder 25 forming the plunger room 23 via a check valve 27, and a chuck 29 is provided at the tip of the grease pipe 28.

The check valve 27 allows the grease from the plunger room 23 to pass in the direction of the grease pipe 28, and prevents the grease in the grease pipe 28 from returning to the plunger room 23. Further, a plunger 22 is provided inside the plunger room 23 so as to be slidable in the central axis direction, and a crank cap 57 having a long axis orthogonal to the axial direction of the plunger 22 is provided below the plunger 22 as the plunger 22. It is welded and fixed so that it is integrated.

As shown in FIG. 2, the crank cap 57 has a concave groove 58 on the lower surface, and the concave groove 58 has a minor axis in the axial direction of the plunger 22, and the minor axis is a horizontal bevel gear described later. It is formed slightly larger than the outer diameter of the attached crank pin 57, and the long diameter orthogonal to this short diameter is a long hole shape that is larger than the outer diameter of the circumference drawn by the crank pin 57 by the rotation of the horizontal bevel gear 51. The crank pin 57 is inserted in the groove 58.

As shown in FIGS. 3 and 4, the crank pin 57 is provided so as to project from the upper surface of the horizontal bevel gear 51 at a position eccentric from the rotation center of the horizontal bevel gear 51. 51 is a gear holder 71 with a fixing pin 55
It is rotatably attached to. Also, this horizontal bevel gear
51 is meshed with a vertical bevel gear 61 having a rotation axis orthogonal to the rotation axis of the horizontal bevel gear 51, and the vertical bevel gear 61 is a drive shaft.
Fixed to the gear holder 71 so that it rotates together with 63,
The drive shaft 63 has a front end rotatably supported by a gear holder 71, a rear end near a rear end supported by a crank frame 81 by a shaft holder 67, and a front end that prevents the front end from coming off the gear holder 71 with a ring 68 and a tooth surface of a vertical bevel gear 61. The horizontal bevel gear 51
The drive shaft 63 is fixed at a position corresponding to the tooth surface of the drive shaft 63, and a coupler 65 is provided at the rear end of the drive shaft 63 for fitting with a rotary shaft 112 of a hand motor 110 described later.

As shown in FIGS. 5 and 6, the gear holder 71 has a substantially cylindrical shape having a male screw 73 at its tip, a drive shaft support hole 77 at its rear end, and a horizontal umbrella at the top. A notch as a gear receiving portion is formed, and a fixing pin insertion hole 75 for supporting the horizontal bevel gear 51 on the gear holder 71 is provided, and a frame-shaped crank frame 81 is formed by a male screw 73 of the gear holder 71. Is attached to the motor fixed cylinder base 91.

The crank frame 81 is shown in FIGS.
As shown in FIG. 5, the upper plate portion 82, the lower plate portion 83, the front plate portion 84, and the rear plate portion 85 are formed into a frame shape, and the front plate portion 84 has a cylinder through hole 87 and a male hole of the gear holder 71. A fixing hole for inserting the screw 73 is provided, a rear plate portion 85 is provided with a through hole 88 for the plunger 22 and a hole for attaching the shaft holder 67, and a cylinder through hole 87 for the front plate portion 87. Cylinder 25 partially inserted in
The plunger room 23 supports the front end direction of the plunger 22 and the plunger through hole 88 of the rear plate portion 85 supports the rear end direction of the plunger 22 to slidably support the plunger 22.

The motor fixed cylinder base 91 has a disk-shaped front wall portion 92 and a cylindrical motor mounting cylinder fixed portion 93.
Reference numeral 92 is welded and fixed to the cylinder 25 in a state where the small diameter portion of the cylinder 25 is inserted into the cylinder through hole 87, and in this cylinder 25, as shown in FIG. Is fixed, and the connection pipe 41 and the grease tank 11 are integrally welded and fixed, and the motor mounting cylinder 101 is joined and fixed to the cylindrical motor mounting cylinder fixing portion 93.

The motor mounting cylinder 101 has a cylindrical rear end 102 that matches the shape of the front end of a battery-driven hand motor 110 that is also used for a hand drill and the like. The hand motor tip portion inserted into and fitted to the motor coupling portion is fixed by a screw 108 or the like. It should be noted that when inserting and fixing the tip portion of the hand motor 110 into the motor coupling portion, it is said that the rotation shaft 112 of the hand motor 110 is aligned with the position where the coupler 65 provided at the rear end of the drive shaft 63 is fitted. Needless to say, the rotation axis of the hand motor 110 is made to coincide with the center axis of the drive shaft 63, which is the rotation axis of the vertical bevel gear 61, so that the plunger is rotated.
It is parallel to the central axis of 22 and the central axis of the grease pipe 28, and thus also to the central axis of the grease tank 11.

Further, as the motor coupling portion, as shown in FIG. 7, a notch 104 along the central axis of the motor mounting cylinder 101 is provided from the rear end 102 of the motor mounting cylinder 101 with an appropriate length and tightened. The band portion 105 having the screw 106 may be fitted on the outer periphery of the motor mounting cylinder 101 in the vicinity of the rear end 102.
Since the hand grease gun 10 according to the present embodiment is configured as described above and uses the battery type hand motor 110, it can be easily carried and moved, and the center of the grease pipe 28 and the grease tank 11 can be easily moved. Axis and hand motor 11
By making the rotation axis of 0 parallel to the front-rear length of the hand grease gun 10, the grease pipe 28 must be inserted when greasing the inlet such as a grease nipple provided in a narrow place. In addition, the grease gun 10 can be manufactured and supplied at low cost by using the general-purpose hand motor 110, and the motor 110 and the grease tank 11 and the plunger which are the power unit are connected to the motor coupling unit and the coupler 65. This facilitates separation from the greasing mechanism portion such as 22 and thus facilitates maintenance such as repair of the grease gun 10.

Further, the general-purpose hand motor 110 is generally equipped with a switchable speed or a braking mechanism for rapidly decelerating the rotation of the rotary shaft 112 when the switch is turned off. It is easy to change the greasing speed by adjusting the speed, and when the switch is released, the grease discharge can be stopped in a short time to prevent the grease from overflowing.

[0019]

Since the hand grease gun according to the present invention uses a battery-powered hand motor, it is extremely easy to carry and carry the grease gun, and the center axis of the grease tank or grease pipe can be easily moved. Also, since the grease gun has a shape that is long in the front and back with the axes of the motor rotating shaft being parallel to each other, it is easy to insert the tip of the grease pipe into a narrow greasing location, and it is easy to lubricate various locations. It is a hand grease gun that can perform grease up extremely easily.

[Brief description of drawings]

FIG. 1 is a partial sectional side view showing an embodiment of a hand grease gun according to the present invention.

FIG. 2 is a top view showing the vicinity of the plunger of the hand grease gun according to the present invention.

FIG. 3 is a sectional side view showing the vicinity of a gear holder of the hand grease gun according to the present invention.

FIG. 4 is a sectional view showing the vicinity of a horizontal bevel gear of the hand grease gun according to the present invention.

FIG. 5 is a side view of a gear holder of the hand grease gun according to the present invention.

FIG. 6 is a front view of the gear holder of the hand grease gun according to the present invention.

FIG. 7 is a view showing another embodiment of the motor coupling portion of the hand grease gun according to the present invention.

FIG. 8 is a diagram showing an example of a conventional hand grease gun.

FIG. 9 is a view showing an example of a conventional compressed air operated hand grease gun.

[Explanation of symbols]

10 Hand Grease Gun 11 Grease Tank 21 Hand Lever 22 Plunger 23 Plunger Room 25 Cylinder 27 Check Valve 28 Grease Pipe 29 Chuck 31 Connector 33 Switch Valve 35 Piston 41 Connecting Pipe 42 Grease Channel 45 Grease Cassette 51 Horizontal Bevel Gear 53 Crank Pin 57 Crank cap 61 Vertical bevel gear 63 Drive shaft 65 Coupler 71 Gear holder 81 Crank room 87 Cylinder through hole 88 Plunger through hole 91 Motor fixing cylinder base 101 Motor mounting cylinder 110 Hand motor 112 Rotating shaft 115 Battery

Claims (1)

[Scope of utility model registration request] 1. A grease pipe having a central axis parallel to the central axis of the grease tank, a check valve at the base of the grease pipe, and a grease whose central axis coincides with the central axis of the grease pipe is pushed out. A horizontal bevel gear with a crank pin for moving the plunger forward and backward attached to the upper surface, meshing orthogonally to the horizontal bevel gear, and having a smaller diameter than the horizontal bevel gear. A vertical bevel gear, a drive shaft of the vertical bevel gear has a coupler fitted to the rotary shaft of the hand motor, the rotary shaft of the battery type hand motor is aligned with the position of the coupler, and a battery type hand motor is provided. An electrically conductive hand grease gun, characterized in that a hand motor is provided so that the rotation axis of the above is parallel to the axis of the grease tank or the axis of the grease pipe.