Grease gun

Abstract

The utility model relates to the technical field of grease injection tools, and discloses a grease gun. The grease gun comprises a machine shell, a driving mechanism installed on the machine shell, a transmission mechanism connected to the driving mechanism, a grease barrel installed on the machine shell and a grease outlet pipe connected to the grease barrel. The driving mechanism drives the transmission mechanism to reciprocate so as to drive grease in the grease cylinder to be discharged through the grease outlet pipe. The machine shell is provided with a motor part provided with the driving mechanism, a main body part connected to the motor part and a handle part extending from the main body part. The motor part and the handle part are located at the two ends of the body part respectively, and the extending directions of the motor part and the handle part are parallel. The driving mechanism comprises a motor, a first circuit board, a fan, a first support and a second support, wherein the first circuit board and the fan are connected to the motor; the first support, the fan, the motor, the second support and the first circuit board are sequentially arranged in the extending direction of the motor part. According to the grease gun provided by the invention, the assembly difficulty of the motor can be reduced.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of oil injection tools, in particular to a grease gun. BACKGROUND

[0002] With the continuous development of tool manufacturing technology, various electric tools begin to be more and more applied to different work scenes. The use of electric tools can save manpower and effectively improve work efficiency. The grease gun is a kind of tool capable of realizing automatic oil injection. The work personnel can use the grease gun to supplement grease to the matching position of the machine, so as to play a lubricating role. In order to ensure the smoothness of the machine parts in the working process.

[0003] The motor is an important part of the grease gun. The motor involves circuit wiring in the assembly process. At present, in the assembly process of the motor, the internal wiring will be walked from the bottom of the stator of the motor. A section is added, which increases the assembly difficulty. Therefore, how to reduce the assembly difficulty of the motor is an important problem. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiment of the present application is to provide a grease gun which can reduce the assembly difficulty of the motor.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a grease gun. The grease gun comprises a shell, a driving mechanism installed on the shell, a transmission mechanism connected to the driving mechanism, a grease cartridge installed on the shell, and an oil outlet pipe connected to the grease cartridge. The driving mechanism drives the transmission mechanism to make reciprocating motion, so as to drive the oil in the grease cartridge to be discharged through the oil outlet pipe. The shell has a motor part for installing the driving mechanism, a main body part connected to the motor part, and a handle part extending from the main body part. The motor part and the handle part are respectively located at two ends of the main body part, and the extension directions of the motor part and the handle part are parallel. The driving mechanism comprises a motor, a first circuit board connected to the motor, a fan, a first support fixed to the motor, and a second support. Along the extension direction of the motor part, the first support, the fan, the motor, the second support and the first circuit board are arranged in sequence.

[0006] The grease gun provided by the embodiment of the present application arranges the first circuit board of the driving mechanism in the motor part when arranging the motor in the shell. At the same time, the first circuit board in the driving mechanism is located on the side of the motor close to the main body part, so that the arrangement position of the first circuit board is closer to the main body part, which provides convenience for the wiring connection of the first circuit board. The internal wiring can be connected with the first circuit board without passing through the position of the motor stator, thereby reducing the assembly difficulty of the motor.

[0007] In some embodiments, the butter gun further comprises a fixing member connecting the first support, the motor and the second support. In this way, different parts of the driving mechanism can be connected to form a whole through the fixing member.

[0008] In some embodiments, the butter gun further comprises a second circuit board arranged at the top of the main body part away from the butter cartridge. In this way, the integration of different components in the casing can be achieved by arranging the second circuit board at the main body part.

[0009] In some embodiments, the second circuit board and the first circuit board are electrically connected via wires. In this way, the establishment of internal circuits can be achieved by connecting different circuit boards through internal wiring.

[0010] In some embodiments, the first support is provided with a hollow area exposing part of the fan, and the hollow area is arranged around the extension direction of the motor part. In this way, air convection can be facilitated through the hollow area to dissipate heat from the motor.

[0011] In some embodiments, the motor is located above the butter cartridge. In this way, the installation of different components can be provided with relatively independent space by arranging the motor above the butter cartridge to adapt to the assembly of different components.

[0012] In some embodiments, the butter gun further comprises a battery pack, and the motor and the battery pack are located at both ends of the handle part. In this way, the weight of different components can be dispersed by arranging the battery pack and the motor at both ends of the handle part to avoid the phenomenon of weight concentration at one end of the handle part.

[0013] In some embodiments, the butter gun further comprises an operation button arranged on the main body part, and the operation button is opposite to and electrically connected with the second circuit board. In this way, the electrical connection between the button switch and the second circuit board can be facilitated by arranging the operation button opposite to the second circuit board.

[0014] In some embodiments, the motor comprises a rotor, a stator sleeved on the rotor, a rotor shaft connected with the rotor, and a fan fixed to the rotor shaft. In this way, the driving effect can be achieved while ensuring the heat dissipation effect through the cooperation between different components in the motor.

[0015] In some embodiments, the stator is stacked by magnetic steel sheets and is provided with a groove for installing a screw. In this way, the screw can be conveniently fastened through the groove of the stator. BRIEF DESCRIPTION OF DRAWINGS

[0016] One or more embodiments are illustrated by way of example in the drawings and are described herein in connection with the embodiments described. These embodiments are not intended to limit the scope of the embodiments to the precise process described but are intended to cover any modifications that fall within the scope of the embodiments. The drawings show the following:

[0017] Figure 1 is a front view structural schematic diagram of a butter gun provided by some embodiments of the present application;

[0018] Figure 2 is Figure 1 is an enlarged structural schematic diagram at A in FIG. 4;

[0019] Figure 3 is a cooperation structural schematic diagram of a cover and a driving assembly in a butter gun provided by some embodiments of the present application;

[0020] Figure 4 is an assembly structural schematic diagram of a butter gun provided by some embodiments of the present application;

[0021] Figure 5 is a three-dimensional structural schematic diagram of a butter gun provided by some embodiments of the present application. DETAILED DESCRIPTION

[0022] To make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that in the embodiments of the present application, many technical details are proposed in order to make the readers better understand the present application. However, the technical solutions claimed by the present application can be implemented even without these technical details and based on various changes and modifications of the following embodiments. The division of the following embodiments is for the convenience of description and should not constitute any limitation on the specific embodiments of the present application. The embodiments can be combined and referenced to each other without contradiction.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the description and the claims herein and the above description of drawings herein contain provisions relating to the term "comprise" and "have", and any variations thereof, are intended to cover a non-exclusive inclusion.

[0024] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0025] As Figures 1 to 5 The utility model relates to a butter gun for lubricating grease filling to mechanical equipment. The butter gun includes a casing 11, a driving mechanism 12 mounted on the casing 11, a transmission mechanism 13 connected to the driving mechanism 12, a butter cartridge 21 mounted on the casing 11, and an oil outlet pipe 22 connected to the butter cartridge 21. The driving mechanism 12 drives the transmission mechanism 13 to make reciprocating motion to drive the grease in the butter cartridge 21 to be discharged through the oil outlet pipe 22. The casing 11 can adopt a split structure, for example, a first casing 101 and a second casing 102 can be used to realize cooperation.

[0026] Furthermore, the transmission mechanism 13 is provided with a transmission gear connected to the driving mechanism 12, an eccentric pin located on the transmission gear, and a plunger rod sleeved on the eccentric pin. The transmission gear is driven by the driving mechanism 12 and drives the eccentric pin to make circular motion along a fixed center, thereby driving the plunger rod to make reciprocating motion, realizing the action of the plunger rod pushing the grease out.

[0027] The butter gun is provided with a busbar seat 14 located at the rear of the transmission mechanism 13, one end of the plunger rod extends into the busbar seat 14 to contact and push the grease. The butter cartridge 21 is mounted below the busbar seat 14, and the busbar seat 14 is provided with a grease passage. When the plunger rod makes reciprocating motion, the grease in the butter cartridge 21 will pass through the busbar seat 14 and be extruded from the oil outlet pipe 22. The busbar seat 14 is provided with an exhaust valve located on the upper surface. When the internal pressure is relatively large, it will affect the extrusion of the grease. At this time, the exhaust valve can be opened to exhaust the gas in the busbar seat 14, facilitating the extrusion of the grease.

[0028] The casing 11 has a motor portion 111 in which the driving mechanism 12 is installed, a main body portion 112 connected to the motor portion 111, and a handle portion 113 extending from the main body portion 112. The motor portion 111 and the handle portion 113 are respectively located at two ends of the main body portion 112, and the extending directions of the motor portion 111 and the handle portion 113 are parallel. The handle portion 113 is a portion of the casing 11 that can be held by an operator, and provides convenience for the operator to hold the butter gun. The main body portion 112 is a portion of the casing 11 in which the busbar 14 is installed, and the motor portion 111 is a portion of the casing 11 in which the driving mechanism 12 is installed. In this way, integrated installation of the components can be achieved, the assembly difficulty between the components is reduced, and the space occupation is also reduced.

[0029] The main body portion 112 is connected to the handle portion 113, and the motor portion 111 is away from the handle portion 113. The motor portion 111 can form an arrangement space matched with the driving mechanism 12. Thus, the driving mechanism 12 and the busbar 14 form relatively independent assembly spaces, respectively adapted to the assembly of the driving mechanism 12 and the busbar 14 in the casing 11. In actual cases, the main body portion 112 can be provided with a cuboid shape to adapt to the installation of the busbar 14. The motor portion 111 can be provided with a column shape to adapt to the installation of the motor 121 in the driving mechanism 12. The motor portion 111 can position the position of the motor 121 by providing a positioning rib, so as to ensure the stability of the motor 121 after assembly.

[0030] The driving mechanism 12 comprises a motor 121, a first circuit board 122 connected to the motor 121 and a fan 123, and a first support 124 and a second support 125 fixed to the motor 121. Along the extension direction of the motor part 111, the first support 124, the fan 123, the motor 121, the second support 125 and the first circuit board 122 are arranged in sequence. The motor 121 of the driving mechanism 12 generates driving force during operation, which can be transmitted to the plunger rod in a suitable form through the transmission mechanism 13 after speed reduction and motion form conversion, so as to drive the plunger rod to move and realize grease extrusion. The first circuit board 122 is a circuit board equipped with the motor 121, which can connect the motor 121 to the control circuit of the grease gun. In addition, the first circuit board 122 can be arranged with a detector such as a Hall element to detect the operation of the motor 121, so as to ensure the normal operation of the motor 121. The first circuit board 122 is located on the side of the motor 121 close to the busbar 14, which can be directly electrically connected to other parts in the circuit through internal wiring without passing through the area where the stator 1212 of the motor 121 is located. The fan 123 is a component for cooling the motor 121, which can play a role in heat dissipation during the operation of the grease gun. The first support 124 can be provided with a hollow area 1241 exposing part of the fan. The hollow area 1241 provides convenience for air convection, and during the rotation of the fan 123, stable and smooth air convection can be formed between the inside and outside of the machine shell 11, so as to effectively cool the motor 121. The hollow area 1241 on the first support 124 provides convenience for air flow.

[0031] The grease gun provided by the embodiment of the present application arranges the first circuit board 122 of the driving mechanism 12 in the motor part 111 when arranging the motor 121 in the machine shell 11. At the same time, the first circuit board 122 in the driving mechanism 12 is located on the side of the motor 121 close to the main body part 112, so that the arrangement position of the first circuit board 122 is closer to the main body part 112, which provides convenience for the wiring connection of the first circuit board 122. The internal wiring can be connected to the first circuit board 122 without passing through the position where the stator 1212 of the motor 121 is located, thereby reducing the assembly difficulty of the motor 121.

[0032] The parts of the driving mechanism 12 are connected through the fixing member 15, which can be a fastener such as a bolt or a screw. Figure 3As shown, the fixing member 15 passes sequentially through the groove of the first bracket 124, the stator 1212 of the motor 121, and the second bracket 125, connecting all parts to form a whole. The motor 121 is located above the grease cylinder. The motor 121 includes a rotor 1211, a stator 1212 sleeved on the rotor 1211, and a rotor shaft 1213 connected to the rotor 1211. The fan 123 is fixed to the rotor shaft 1213, and the rotor shaft 1213 is connected to the input end of the transmission mechanism 13. The rotor 1211 and the stator 1212 cooperate with each other, driving the rotor 1211 to rotate in the magnetic field environment formed by the stator 1212. The rotor shaft 1213, the fan 123, and the rotor 1211 rotate synchronously. The stator 1212 is made of stacked magnetic steel sheets and has grooves for mounting screws.

[0033] The grease gun also includes a second circuit board 16, which serves as the control board for the grease gun. The second circuit board 16 can control the grease gun to start or stop working, and adjust the working level, based on the operator's triggering of the switch. The second circuit board 16 is located in the main body 112. The second circuit board 16 is electrically connected to the first circuit board 122 via wires. The second circuit board 16 can control the operation of the drive mechanism 12, allowing the grease gun to automatically dispense grease under the drive of the drive mechanism 12. Both the drive mechanism 12 and the second circuit board 16 are located in the area adjacent to the manifold 14. Furthermore, the drive mechanism 12 and the second circuit board 16 are positioned on different sides of the manifold 14. This effectively utilizes the installation space within the housing 11, allowing for a relatively compact arrangement of all components and ensuring the miniaturization of the overall structure of the grease gun.

[0034] like Figures 1 to 3 As shown, the housing 11 of the grease gun may also include a cover 114. The motor portion 111 of the housing 11 has an opening communicating with the outside. The cover 114 is connected to the motor portion 111 and closes the opening. The cover 114 facilitates the fixation of the drive mechanism 12 within the housing 11. The cover 114 can be fixed together with the motor portion 111 of the housing 11, thereby forming a protective shell for the motor 121 through the connection between the cover 114 and the motor portion 111. The opening of the motor portion 111 is directly opposite the assembly position of the drive mechanism 12, thus forming a channel within the housing 11. The drive mechanism 12 is connected to the manifold 14 through three, four, or five fasteners 15. The cover 114 can close the opening of the motor portion 111 after the drive mechanism 12 is assembled. In practice, the cover 114 and the motor portion 111 can be detachably connected. The cover 114 can have mounting holes, allowing it to be connected to the opening of the motor section 111 via fasteners passing through the mounting holes. This detachable connection facilitates the assembly and disassembly of different parts of the housing 11, enabling replacement and maintenance of the drive mechanism 12.

[0035] In this embodiment, the second circuit board 16 can be parallel to the axial direction of the motor 121, and the first circuit board 122 can be perpendicular to the axial direction of the motor 121. For example... Figure 5 As shown, the second circuit board 16 can be placed flat on one side of the busbar 14, and the first circuit board 122 can be arranged vertically on different sides of the busbar 14. In this way, by arranging different circuit boards facing the busbar 14 in different areas, the layout space around the busbar 14 can be effectively utilized.

[0036] like Figure 1 As shown, the main body 112 can protrude from the motor portion 111 and the handle portion 113 in the vertical direction of the second circuit board 16. The protruding main body 112 in the vertical direction corresponding to the second circuit board 16 not only adapts to the arrangement space shape of the busbar 14, but also creates a relatively independent arrangement area for the second circuit board 16. This ensures that the arrangement position of the second circuit board 16 is not easily affected by other components.

[0037] In addition, such as Figure 4 As shown, the motor section 111 may be equipped with an operation button 161, which is directly opposite and electrically connected to the second circuit board 16. Positioning the operation button 161 adjacent to the second circuit board 16 facilitates the electrical connection between the operation button 161 and the second circuit board 16. Operators can control certain functions using the operation button, such as turning on the lights or locking the grease gun.

[0038] like Figure 5 As shown, the grease gun may also include a battery pack 17, which is connected to the side of the handle portion 113 away from the main body portion 112. The battery pack 17 and the motor 121 of the drive mechanism 12 are located at opposite ends of the main body portion 112. The battery pack 17 provides power for the operation of the grease gun. The battery pack 17 can be assembled using a plug-in connection and transmits electrical energy to the motor 121 through a transmission line within the handle portion 113, enabling the motor 121 to operate normally. Furthermore, the battery pack 17 and the motor 121 of the drive mechanism 12 are located at opposite ends of the handle portion 113, which helps to distribute the weight of the grease gun, bringing its center of gravity closer to the handle portion 113, thereby reducing operator fatigue when gripping the grease gun for grease application.

[0039] Those skilled in the art will understand that the above embodiments are specific implementations of this application, and in practical applications, various changes can be made in form and detail without departing from the spirit and scope of this application.

Claims

1. A butter gun comprising a casing, a driving mechanism mounted on the casing, a transmission mechanism connected to the driving mechanism, a butter cartridge mounted on the casing and a butter outlet pipe connected to the butter cartridge, the driving mechanism driving the transmission mechanism to make reciprocating motion to drive the butter in the butter cartridge to be discharged through the butter outlet pipe; characterized in that: The machine shell has a motor part for installing the driving mechanism, a main body part connected to the motor part, and a handle part extending from the main body part, the motor part and the handle part are respectively located at two ends of the main body part, and the extending directions of the motor part and the handle part are parallel; the driving mechanism comprises a motor, a first circuit board connected to the motor, a fan, a first support fixed to the motor, and a second support, and along the extending direction of the motor part, the first support, the fan, the motor, the second support, and the first circuit board are sequentially arranged. ​ 2. A grease gun according to claim 1, characterised in that The butter gun further comprises a fixing member connecting the first support, the motor, and the second support.

3. The grease gun of claim 1, wherein, The butter gun further comprises a second circuit board arranged at the top of the main body part away from the butter cartridge.

4. A grease gun according to claim 3, wherein The second circuit board and the first circuit board are electrically connected via wires.

5. The grease gun of claim 1, wherein, The first support is provided with a hollow area exposing part of the fan, and the hollow area is arranged around the extending direction of the motor part.

6. The grease gun of claim 1, wherein, The motor is located above the butter cartridge.

7. The grease gun of claim 1, wherein, The butter gun further comprises a battery pack, and the motor and the battery pack are located at two ends of the handle part.

8. The grease gun of claim 3, wherein, The butter gun further comprises an operation button arranged on the main body part, and the operation button is opposite to and electrically connected with the second circuit board.

9. The grease gun of claim 1, wherein, The motor comprises a rotor, a stator sleeved on the rotor, and a rotor shaft connected with the rotor, and the fan is fixed to the rotor shaft.

10. The grease gun of claim 9, wherein, The stator is stacked by magnetic steel sheets, and is provided with a groove for installing a screw.

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