Grease gun

Abstract

The utility model relates to the technical field of lubrication maintenance equipment, and discloses a grease gun which comprises a gun body, a driving mechanism and a metering mechanism. The gun body is provided with an oil way and a metering cavity, the oil way is used for being communicated with the oil storage pipe and outputting grease, and the metering cavity is provided with an oil inlet and an oil outlet which are communicated with the oil way. The driving mechanism is connected with the gun body and used for enabling the grease storage pipe to supply grease to the grease way. The metering mechanism is connected with the gun body, at least part of the metering mechanism is arranged in the metering cavity, and the metering mechanism is used for metering the flow of the butter flowing through the metering cavity; when the grease is squeezed out of the grease way, the metering mechanism can meter the flow of the grease to obtain the filling amount of the grease, so that when the grease gun is used for filling the grease, an operator can control the driving mechanism to stop working according to the filling amount, quantitative filling of the grease can be achieved, the problem of insufficient filling amount or excessive filling amount is avoided, and the service life of the grease gun is prolonged. Maintenance of mechanical equipment is facilitated, and cost can be saved.

Description

Technical Field

[0001] This utility model relates to the field of lubrication and maintenance equipment technology, and in particular to a grease gun. Background Technology

[0002] A grease gun is a tool for adding grease to mechanical equipment. There are two types of grease guns: manual and electric. Electric grease guns use a motor to drive a pump to dispense lubricating oil. However, most electric grease guns require manual control of the amount of grease dispensed, which makes it impossible to measure the amount dispensed. This can lead to problems such as insufficient or excessive grease dispensing. Utility Model Content

[0003] The purpose of this invention is to provide a grease gun that can measure the amount of grease dispensed.

[0004] To achieve the above objectives, this utility model provides a grease gun, including a gun body, a drive mechanism, and a metering mechanism;

[0005] The gun body has an oil passage and a metering chamber. The oil passage is used to communicate with the oil storage pipe and output grease. The metering chamber has an oil inlet and an oil outlet that communicate with the oil passage.

[0006] The drive mechanism is connected to the gun body, and the drive mechanism is used to supply grease to the oil passage through the oil reservoir.

[0007] The metering mechanism is connected to the gun body, and the metering mechanism is at least partially located inside the metering chamber. The metering mechanism is used to measure the flow rate of the grease flowing through the metering chamber.

[0008] In a specific embodiment of this utility model, a control unit is further included. The control unit is connected to the gun body, and the drive mechanism and the metering mechanism are both electrically connected to the control unit. The control unit is configured to control the operation of the drive mechanism and display the flow rate of the grease flowing through the metering chamber.

[0009] In a specific embodiment of this utility model, the measuring mechanism includes a first gear, a second gear, a magnet, and a Hall sensor;

[0010] The first gear and the second gear are rotatably connected to the wall of the metering chamber, and the first gear and the second gear mesh with each other;

[0011] The magnet is connected to the first gear, and the magnet can rotate with the first gear;

[0012] The Hall sensor is disposed on the gun body and is electrically connected to the control unit. The Hall sensor is used to sense the magnet.

[0013] The oil inlet and the oil outlet are located on opposite sides of the meshing point of the first gear and the second gear, respectively.

[0014] In a specific embodiment of this utility model, the first gear and the second gear are both elliptical gears or both are circular gears.

[0015] In a specific embodiment of this utility model, the gun body includes a gun body and a cover. The cover is detachably connected to the gun body, and the metering cavity is formed between the cover and the gun body. The gun body has a first oil delivery channel, and the cover has a second oil delivery channel. The first oil delivery channel and the second oil delivery channel form the oil circuit. The first oil delivery channel is used to communicate with an oil storage pipe. The oil inlet is located on the gun body and communicates with the first oil delivery channel. The oil outlet is located on the cover and communicates with the second oil delivery channel.

[0016] Both the drive mechanism and the control unit are located inside the gun body.

[0017] In a specific embodiment of this utility model, the cover has a receiving groove;

[0018] The Hall sensor is connected inside the gun body, and the sensing end of the Hall sensor extends into the receiving groove.

[0019] In a specific embodiment of this utility model, the gun body includes a gripping part and a mounting part, the gripping part is connected to the mounting part and a gripping avoidance through hole is formed between them, and the mounting part has the first oil supply channel;

[0020] The drive mechanism is disposed within the mounting portion, and the control unit is disposed within the grip portion;

[0021] The cover is detachably connected to the mounting part.

[0022] In a specific embodiment of this utility model, the mounting part is provided with a connecting hole on the side facing away from the cover. The connecting hole communicates with the first oil delivery channel and is used to connect with the oil storage pipe.

[0023] In a specific embodiment of this utility model, the gun body further includes a support portion, which is connected to the mounting portion, and the support portion is located on the side of the mounting portion relative to the grip portion;

[0024] The support part has a support through hole, which is directly opposite the connection hole, and the axes of the support through hole and the connection hole are parallel. The side of the mounting part with the connection hole is spaced apart from the support part. The support through hole is used for the oil storage pipe to pass through and support the oil storage pipe.

[0025] In a specific embodiment of this utility model, the driving mechanism includes a motor assembly, a transmission assembly, and a plunger. The motor assembly, the transmission assembly, and the plunger are all disposed within the mounting portion. The motor assembly and the plunger are connected via the transmission assembly. The plunger extends at least partially into the first oil delivery channel. The motor assembly is electrically connected to the control unit. The motor assembly is used to drive the plunger to perform reciprocating linear motion within the first oil delivery channel, so that the oil storage pipe supplies grease to the first oil delivery channel.

[0026] In a specific embodiment of the present invention, a power supply assembly is further included, which is detachably connected to the grip and electrically connected to the control unit.

[0027] This utility model provides a grease gun, which has the following advantages compared with the prior art:

[0028] In practical application, the grease gun of this invention has an oil reservoir connected to the gun body and connected to the oil circuit. When grease needs to be dispensed, the drive mechanism is operated to supply grease to the oil circuit through the oil reservoir, and the grease is dispensed through the oil circuit. The gun body has a metering chamber connected to the oil circuit, and a metering mechanism is installed in the metering chamber. When the grease is dispensed from the oil circuit, the metering mechanism can measure the flow rate of the grease to obtain the amount of grease dispensed. Therefore, when using this grease gun to dispense grease, the operator can control the drive mechanism to stop working according to the amount dispensed, which can realize quantitative dispensing of grease and avoid problems such as insufficient or excessive dispensing. This is beneficial to the maintenance of mechanical equipment and can save costs. Attached Figure Description

[0029] Figure 1 This is a perspective view of the grease gun according to an embodiment of the present invention;

[0030] Figure 2 This is a cross-sectional view of the grease gun according to an embodiment of this utility model;

[0031] Figure 3 This is an embodiment of the present utility model. Figure 2 Enlarged diagram of A in the middle;

[0032] Figure 4 This is an exploded schematic diagram of the grease gun according to an embodiment of this utility model;

[0033] Figure 5 This is an embodiment of the present utility model. Figure 4 Enlarged diagram of B in the middle;

[0034] Figure 6 This is a schematic diagram of another measuring mechanism according to an embodiment of the present invention.

[0035] In the diagram, 1. Gun body; 11. Gun main body; 111. Grip; 112. Mounting part; 1121. Connecting hole; 113. Support part; 1131. Support through hole; 12. Cover; 1201. Receiving groove; 2. Drive mechanism; 21. Motor assembly; 22. Transmission assembly; 23. Plunger; 3. Metering mechanism; 31. First gear; 32. Second gear; 33. Magnet; 34. Hall sensor; 4. Control unit; 5. Power supply assembly; 10. Oil circuit; 101. First oil supply channel; 102. Second oil supply channel; 20. Metering chamber; 201. Oil inlet; 202. Oil outlet; 30. Grip clearance through hole; 100. Oil storage pipe. Detailed Implementation

[0036] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0037] like Figures 1 to 5 As shown, an embodiment of the present invention provides a grease gun, comprising a gun body 1, a drive mechanism 2, and a metering mechanism 3. The gun body 1 has an oil passage 10 and a metering chamber 20. The oil passage 10 is used to communicate with an oil storage pipe 100 and output grease. The metering chamber 20 has an oil inlet 201 and an oil outlet 202 communicating with the oil passage 10. The drive mechanism 2 is connected to the gun body 1 and is used to supply grease from the oil storage pipe 100 to the oil passage 10. The metering mechanism 3 is connected to the gun body 1 and is at least partially disposed within the metering chamber 20. The metering mechanism 3 is used to measure the flow rate of grease flowing through the metering chamber 20.

[0038] In practical applications, the oil storage pipe 100 is connected to the gun body 1 and is connected to the oil passage 10. When grease needs to be extruded, the drive mechanism 2 is operated to supply grease to the oil passage 10 through the oil storage pipe 10, and the grease is extruded through the oil passage 10. The gun body 1 has a metering chamber 20 connected to the oil passage 10. A metering mechanism 3 is installed in the metering chamber 20. When the grease is extruded from the oil passage 10, the metering mechanism 3 can measure the flow rate of the grease to obtain the amount of grease to be added. Thus, when using this grease gun to add grease, the operator can control the drive mechanism 2 to stop working according to the amount to be added, which can realize the quantitative addition of grease and avoid the problems of insufficient or excessive addition. This is beneficial to the maintenance of mechanical equipment and can save costs.

[0039] Furthermore, the grease gun also includes a control unit 4, which is connected to the gun body 1. The drive mechanism 2 and the metering mechanism 3 are both electrically connected to the control unit 4. The control unit 4 is configured to control the operation of the drive mechanism 2 and display the flow rate of grease flowing through the metering chamber 20. Specifically, based on the setting of the control unit 4, the operator can control the operation of the drive mechanism 2 through the control unit 4, and the control unit 4 can display the flow rate of grease, making it convenient for the operator to observe the amount of grease added.

[0040] Furthermore, such as Figure 5 As shown, the measuring mechanism 3 includes a first gear 31, a second gear 32, a magnet 33, and a Hall sensor 34. The first gear 31 and the second gear 32 are rotatably connected to the cavity wall of the measuring chamber 20, and the first gear 31 and the second gear 32 mesh with each other. The magnet 33 is connected to the first gear 31, and the magnet 33 can rotate with the first gear 31. The Hall sensor 34 is disposed on the gun body 1, and the Hall sensor 34 is electrically connected to the control unit 4. The Hall sensor 34 is used to sense the magnet 33. The oil inlet 201 and the oil outlet 202 are located on opposite sides of the meshing point of the first gear 31 and the second gear 32, respectively. In practical applications, when grease is output through the oil circuit 10, the grease enters the metering chamber 20 from the oil inlet 201 and is output through the oil outlet 202. During the flow of grease in the metering chamber 20, it drives the first gear 31 and the second gear 32 to rotate around their axes. The magnet 33 can follow the rotation of the first gear 31. During this process, the Hall sensor 34 can sense the magnet 33. Thus, the Hall sensor 34 can monitor the number of rotations of the first gear 31 and calculate the amount of grease added based on the number of rotations. The metering mechanism 3 with this structure measures the amount of grease added. It has a simple structure and high metering accuracy.

[0041] In this embodiment, as Figure 5 As shown, the first gear 31 and the second gear 32 are both elliptical gears. Two magnets 33 are connected to the first gear 31, and the two magnets 33 are arranged opposite each other at opposite ends of the first gear 31 along its radial direction.

[0042] In other embodiments, such as Figure 6 As shown, both the first gear 31 and the second gear 32 are spherical gears. At this time, four magnets 33 are connected to the first gear 31. The four magnets 33 are evenly arranged around the center of the first gear 31, and the adjacent two magnets 33 are spaced 90° apart. The advantage of this structure is that the Hall sensor 34 can sense every 90° rotation of the first gear 33, and the measurement accuracy will be higher.

[0043] Furthermore, such as Figure 3 and 5As shown, the gun body 1 includes a gun body 11 and a cover 12. The cover 12 is detachably connected to the gun body 11, and a metering chamber 20 is formed between the cover 12 and the gun body 11. The gun body 11 has a first oil supply channel 101, and the cover 12 has a second oil supply channel 102. The first oil supply channel 101 and the second oil supply channel 102 form an oil passage 10. The first oil supply channel 101 is used to communicate with the oil storage pipe 100. The oil inlet 201 is located on the gun body 11 and communicates with the first oil supply channel 101. The oil outlet 202 is located on the cover 12 and communicates with the second oil supply channel 102. The drive mechanism 2 and the control unit 4 are both located on the gun body 11. The first gear 31 and the second gear 32 are rotatably connected to the gun body 11. Specifically, the metering chamber 20 is defined by the gun body 11 and the cover 12. Thus, when assembling the grease gun, the first gear 31 and the second gear 32 can be assembled onto the gun body 11 first, and then the cover 12 can be connected onto the gun body 11 to form the metering chamber 20. The gun body 1 with this structure is simple and easy to assemble the first gear 31 and the second gear 32. In addition, removing the cover 12 from the gun body 11 can expose the first gear 31 and the second gear 32, which also facilitates the maintenance of the first gear 31 and the second gear 32.

[0044] Furthermore, such as Figure 5 As shown, the cover 12 has a receiving groove 1201; the Hall sensor 34 is connected to the gun body 11, and the sensing end of the Hall sensor 34 extends into the receiving groove 1201. Specifically, when the cover 12 is assembled onto the gun body 11, the sensing end of the Hall sensor 34 is first inserted into the receiving groove 1201, and then the cover 12 is connected to the gun body 11. The structure is simple and the Hall sensor 34 is easy to install. That is, by accommodating the sensing end of the Hall sensor 34 through the receiving groove 1201, it is ensured that the Hall sensor 34 can sense the magnet 33, and the Hall sensor 34 is easy to install.

[0045] Furthermore, such as Figure 1 As shown, the gun body 11 includes a grip portion 111 and a mounting portion 112. The grip portion 111 is connected to the mounting portion 112, and a grip clearance through hole 30 is formed between them. The mounting portion 112 has a first oil supply channel 101. The drive mechanism 2 is disposed in the mounting portion 112, and the control unit 4 is disposed in the grip portion 111. The cover 12 is detachably connected to the mounting portion 112. With this structure, the grip portion 111 allows the operator to hold the entire grease gun, making it easy to operate. Moreover, the control unit 4 is disposed in the grip portion 111, allowing the operator to operate the control unit 4 by holding the grip portion 111, thus making the operation of the grease gun more convenient. In addition, the drive mechanism 2 is disposed on the mounting portion 112, which is separate from the control unit 4. Therefore, the space in all parts of the gun body 11 can be fully utilized, resulting in high space utilization within the grease gun.

[0046] Furthermore, such as Figure 3 As shown, the mounting part 112 has a connecting hole 1121 on the side facing away from the cover 12. The connecting hole 1121 communicates with the first oil delivery channel 101 and is used to connect with the oil storage pipe 100. Specifically, the connecting hole 1121 is connected to the oil storage pipe 100 through a snap-fit ​​structure or a threaded structure. This application does not limit this. When the oil storage pipe 100 is connected to the connecting hole 1121, the oil storage pipe 100 is arranged opposite to the cover 12. At this time, the distance between the second oil delivery channel 102 in the cover 12 and the oil storage pipe 100 is relatively close. As a result, the grease extrusion path is relatively short and the grease gun can extrude grease at a relatively fast speed.

[0047] Furthermore, such as Figure 1 As shown, the gun body 11 also includes a support portion 113, which is connected to the mounting portion 112 and is located on the side of the mounting portion 112 opposite to the grip portion 111. The support portion 113 has a support through hole 1131, which is directly opposite to the connecting hole 1121, and the axes of the support through hole 1131 and the connecting hole 1121 are parallel. The side of the mounting portion 112 with the connecting hole 1121 is spaced apart from the support portion 113. The support through hole 1131 is used for storing... The oil pipe 100 passes through and supports the oil reservoir 100. In practical applications, one end of the oil reservoir 100 is inserted into the connecting hole 1121, while its body is inserted into the supporting through hole 1131 and contacts the hole wall of the supporting through hole 1131. At this time, the oil reservoir 100 can be stably connected to the gun body 11. That is, based on the setting of the supporting part 113 and the supporting through hole 1131, the grease gun can stably connect the oil reservoir 100 to it, and the oil reservoir 100 is not easily deformed when subjected to radial force.

[0048] In this embodiment, as Figure 2As shown, the drive mechanism 2 includes a motor assembly 21, a transmission assembly 22, and a plunger 23. All three are mounted on the mounting portion 112. The motor assembly 21 and the plunger 23 are connected via the transmission assembly 22. The plunger 23 extends at least partially into the first oil delivery channel 101. The motor assembly 21 is electrically connected to the control unit 4. The motor assembly 21 drives the plunger 23 to perform reciprocating linear motion within the first oil delivery channel 101, thereby supplying grease from the oil reservoir 100 to the first oil delivery channel 101. Specifically, the motor... Component 21 includes a motor and a gear set. The power output end of the motor is connected to the gear set. The transmission component 22 is a crank-slider mechanism. The crank is connected to the gear set, and the slider connects the crank and the plunger 23. The transmission mechanism converts the rotational motion of the motor into the reciprocating linear motion of the plunger 23, thereby supplying grease to the first oil delivery channel 101 from the oil reservoir 100. The structure is simple and the operation is convenient. The grease is output through the reciprocating linear motion of the plunger 23. The principle is the same as that of the plunger 23 pump, which is existing technology and will not be described in detail in this application.

[0049] Furthermore, such as Figure 2 As shown, the grease gun also includes a power supply component 5, which is detachably connected to the grip 111 and electrically connected to the control unit 4. The power supply component 5 can supply power to the motor, thus making the grease gun portable and highly flexible in use. Specifically, the power supply component 5 includes a battery that provides power. The advantage of the detachable power supply component 5 is that when the battery is depleted, it can be replaced with a new power supply component 5 to continue providing power, making operation convenient.

[0050] In this embodiment, the control unit 4 includes a control circuit board, a display, buttons, and switches. The display, buttons, and switches are all electrically connected to the control circuit board. The Hall sensor 34, the power supply assembly 5, and the motor assembly 21 are all electrically connected to the control circuit board. The display can show the flow rate of grease through the metering chamber 20, the buttons can adjust the working mode of the motor, and the switches can control the start and stop of the motor. The above-mentioned components of the control unit 4 are prior art, and this application will not elaborate on them further.

[0051] In this application, based on the configuration of the drive mechanism 2, the metering mechanism 3, and the control unit 4, the grease gun has the functions of quantitative grease dispensing and cyclic quantitative grease dispensing. The quantitative grease dispensing function refers to the control unit 4 controlling the drive mechanism 2 based on the grease dispensing amount measured by the metering mechanism 3. For example, when the drive mechanism 2 is started, the grease gun dispenses grease. When the metering mechanism 3 measures 30 ml of grease, the control unit 4 controls the drive mechanism to stop working, thus achieving the quantitative grease dispensing function. The cyclic quantitative grease dispensing function refers to the control unit 4 controlling the drive mechanism 2 to work intermittently based on the grease dispensing amount measured by the metering mechanism 3. For example, when the drive mechanism 2 is started, the grease gun dispenses grease. When the metering mechanism 3 measures 30 ml of grease, the control unit 4 controls the drive mechanism 2 to stop working for five seconds. After that, the control unit 4 starts the drive mechanism 2 again, repeating this cycle until no more grease is needed, at which point the drive mechanism 2 is shut off via a switch, thus achieving the cyclic quantitative grease dispensing function.

[0052] In this application, the oil reservoir 100 is prior art, and its contents are filled with grease. This application will not elaborate on this further.

[0053] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A grease gun, characterized in that, It includes the gun body (1), the drive mechanism (2), and the measuring mechanism (3); The gun body (1) has an oil passage (10) and a metering chamber (20). The oil passage (10) is used to communicate with the oil storage pipe (100) and output grease. The metering chamber (20) has an oil inlet (201) and an oil outlet (202) communicating with the oil passage (10). The drive mechanism (2) is connected to the gun body (1), and the drive mechanism (2) is used to supply grease to the oil passage (10) through the oil reservoir (100); The metering mechanism (3) is connected to the gun body (1), and the metering mechanism (3) is at least partially located in the metering chamber (20). The metering mechanism (3) is used to measure the flow rate of butter flowing through the metering chamber (20). The grease gun also includes a control unit (4), which is connected to the gun body (1). The drive mechanism (2) and the metering mechanism (3) are both electrically connected to the control unit (4). The control unit (4) is configured to control the operation of the drive mechanism (2) and display the flow rate of grease flowing through the metering chamber (20). The measuring mechanism (3) includes a first gear (31), a second gear (32), a magnet (33), and a Hall sensor (34); The first gear (31) and the second gear (32) are rotatably connected to the cavity wall of the metering cavity (20), and the first gear (31) and the second gear (32) mesh with each other; The magnet (33) is connected to the first gear (31), and the magnet (33) can rotate with the first gear (31); The Hall sensor (34) is disposed on the gun body (1) and is electrically connected to the control unit (4). The Hall sensor (34) is used to sense the magnet (33). The oil inlet (201) and the oil outlet (202) are located on opposite sides of the meshing point of the first gear (31) and the second gear (32), respectively.

2. The grease gun according to claim 1, characterized in that, The first gear (31) and the second gear (32) are either elliptical gears or circular gears.

3. The grease gun according to claim 1, characterized in that, The gun body (1) includes a gun body (11) and a cover (12). The cover (12) is detachably connected to the gun body (11), and the metering chamber (20) is formed between the cover (12) and the gun body (11). The gun body (11) has a first oil supply channel (101), and the cover (12) has a second oil supply channel (102). The first oil supply channel (101) and the second oil supply channel (102) form the oil circuit (10). The first oil supply channel (101) is used to communicate with the oil storage pipe (100). The oil inlet (201) is located on the gun body (11) and communicates with the first oil supply channel (101). The oil outlet (202) is located on the cover (12) and communicates with the second oil supply channel (102). The drive mechanism (2) and the control unit (4) are both located inside the gun body (11).

4. The grease gun according to claim 3, characterized in that, The cover (12) has a receiving groove (1201); The Hall sensor (34) is connected inside the gun body (11), and the sensing end of the Hall sensor (34) extends into the receiving groove (1201).

5. The grease gun according to claim 4, characterized in that, The gun body (11) includes a grip part (111) and a mounting part (112). The grip part (111) is connected to the mounting part (112) and a grip clearance through hole (30) is formed between them. The mounting part (112) has the first oil supply channel (101). The drive mechanism (2) is disposed in the mounting part (112), and the control unit (4) is disposed in the grip part (111); The cover (12) is detachably connected to the mounting part (112).

6. The grease gun according to claim 5, characterized in that, The mounting part (112) has a connection hole (1121) on the side facing away from the cover (12). The connection hole (1121) is connected to the first oil delivery channel (101) and is used to connect to the oil storage pipe (100).

7. The grease gun according to claim 6, characterized in that, The gun body (11) also includes a support (113), which is connected to the mounting part (112), and the support (113) is located on the side of the mounting part (112) opposite to the grip part (111); The support part (113) has a support through hole (1131), which is directly opposite the connecting hole (1121), and the axes of the support through hole (1131) and the connecting hole (1121) are parallel. The side of the mounting part (112) with the connecting hole (1121) is spaced apart from the support part (113). The support through hole (1131) is used for the oil storage pipe (100) to pass through and support the oil storage pipe (100).

8. The grease gun according to claim 5, characterized in that, The drive mechanism (2) includes a motor assembly (21), a transmission assembly (22), and a plunger (23). The motor assembly (21), the transmission assembly (22), and the plunger (23) are all disposed in the mounting portion (112). The motor assembly (21) and the plunger (23) are connected by transmission through the transmission assembly (22). The plunger (23) extends at least partially into the first oil delivery channel (101). The motor assembly (21) is electrically connected to the control unit (4). The motor assembly (21) is used to drive the plunger (23) to make reciprocating linear motion in the first oil delivery channel (101) so that the oil storage pipe (100) supplies grease to the first oil delivery channel (101).

9. The grease gun according to claim 8, characterized in that, It also includes a power supply assembly (5), which is detachably connected to the grip (111) and electrically connected to the control unit (4).

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