CN115218109A

CN115218109A - Electric grease gun joint

Info

Publication number: CN115218109A
Application number: CN202210924080.4A
Authority: CN
Inventors: 黄荣福
Original assignee: Yongkang Fuyu Auto Maintenance Tools Co ltd
Current assignee: Yongkang Fuyu Auto Maintenance Tools Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-10-21
Anticipated expiration: 2042-08-02
Also published as: CN115218109B

Abstract

The invention belongs to the technical field of connection of electric tools, in particular to an electric grease gun joint, which comprises a shell, wherein a pipe body is fixedly arranged in the shell, a flow passage is formed in the pipe body, and a plurality of clamping jaws are arranged at the end part of the pipe body; the pipe body is provided with a sliding sleeve at the position of the clamping jaw, the sliding sleeve is moved, and the sliding sleeve pushes the clamping jaw to converge inwards; a motor is fixedly arranged in the shell, a transmission part is arranged between the motor and the sliding sleeve, the motor rotates, and the transmission part can enable the sliding sleeve to slide back and forth on the pipe body; the flexible glue injection plug is arranged in the pipe body, an injection channel is arranged in the injection plug, an elastic piece is arranged in the pipe body, and the elastic piece gives a force for the injection plug to move towards one end of the clamping jaw; the shell is internally provided with a button, a battery and a control circuit board, and the button is pressed down to control the motor to rotate forward and backward. The invention provides an electric grease gun joint which is convenient to operate and is tightly connected.

Description

Electric grease gun joint

Technical Field

The invention belongs to the technical field of connection of electric tools, and particularly relates to an electric grease gun joint.

Background

At present, in the mechanical field, grease is often required to be injected between mechanical parts, wherein a grease gun is connected with a joint structure, and grease is injected between the mechanical parts for lubrication, so as to achieve the effects of protection and prolonging the service life. The Chinese patent CN202122469897.0 discloses a double-handle flat nozzle of a grease gun, which comprises a flat nozzle main body with a hollow interior, wherein a movable sleeve is sleeved outside the flat nozzle main body, a clamping jaw is formed at the front end of the flat nozzle main body and wrapped in the sleeve, two rotatable handles are arranged on the sleeve and symmetrically arranged at two sides of the sleeve, a clamping groove is formed in the middle of the flat nozzle main body, clamping teeth matched with the clamping groove are formed on the handles and clamped in the clamping groove, when the handles are pressed, the sleeve can move downwards relative to the flat nozzle main body, and when the sleeve moves downwards, the clamping jaw is exposed out of the sleeve and the clamping jaw is unfolded; a reset piece is arranged between the flat nozzle main body and the sleeve. The product of the patent already allows the operator to control the joint more easily by means of two-handed control, but the joint still requires the user to drive with great effort. And the inside of the channel of the product of the patent is not provided with a sealing part related to an oil way, and if the sealing performance cannot be guaranteed, a connector is arranged instead.

Disclosure of Invention

The invention aims to provide an electric grease gun joint which is convenient to operate and is tightly connected.

The purpose of the invention is realized by the following steps:

an electric grease gun joint comprises a shell, wherein a pipe body is fixedly arranged in the shell, a flow passage is formed in the pipe body, and a plurality of clamping jaws are arranged at the end part of the pipe body;

the pipe body is provided with a sliding sleeve at the position of the clamping jaw, the sliding sleeve is moved, and the sliding sleeve pushes the clamping jaw to converge inwards;

a motor is fixedly arranged in the shell, a transmission part is arranged between the motor and the sliding sleeve, the motor rotates, and the transmission part can enable the sliding sleeve to slide back and forth on the pipe body;

the flexible glue injection plug is arranged in the pipe body, an injection channel is arranged in the injection plug, an elastic piece is arranged in the pipe body, and the elastic piece gives a force for the injection plug to move towards one end of the clamping jaw;

the shell is internally provided with a button, a battery and a control circuit board, and the button is pressed down to control the motor to rotate forward and backward.

The end part of the pipe body is integrally formed with a plurality of clamping jaws.

A step part is formed in the tube body, one end of the elastic piece abuts against the step part, and the other end of the elastic piece abuts against the plunger.

The pipe body inner sliding type is provided with a sleeve, the injection plug is sleeved on the sleeve, a convex edge is formed on one side of the elastic piece by the injection plug, the convex edge is abutted against the end part of the sleeve, and the outer side of the convex edge is abutted against the inner side wall of the pipe body.

The injection plug is provided with a spring abutting inclined plane at the abutting position of the elastic piece, and under the action of the elastic piece and the spring abutting inclined plane, the injection plug expands laterally and abuts against the inner side wall of the pipe body; the injection passage in the injection plug is conical, and the caliber of a discharge hole of the injection passage is small.

The transmission part comprises a driving rod, the driving rod is fixedly connected with an output shaft of the motor, external threads are arranged on the driving rod, a fixed seat is fixed on the sliding sleeve, and the fixed seat is in threaded connection with the driving rod.

A retaining sleeve is fixed in the shell, the fixed seat slides in the inner side of the retaining sleeve,

the fixing base is fixed on the sliding sleeve in a welding mode, an internal thread hole is formed in the fixing base in a molding mode, and the driving rod penetrates through the internal thread hole.

The clamping jaws are in a converging state and are positioned on the inner side of the sliding sleeve; the clamping jaw is not acted by the sliding sleeve, and the clamping jaw is positioned outside the sliding sleeve.

The outer sides of the clamping jaws are provided with inclined planes, and the sliding sleeve synchronously converges the clamping jaws inwards through the inclined planes; the body is the metal body, and the body is provided with screw thread portion in the other end of clamping jaw.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that:

1. the sliding sleeve is driven in an electric mode, the sliding sleeve moves forwards and backwards through forward and reverse rotation of the motor, and the operation of a user is simplified by adopting the electric mode. The sliding sleeve moves backwards or is kept at the rear part, the sliding sleeve does not act on the clamping jaw, a user can align the clamping jaw with the externally connected joint, and the externally connected joint can push the elastic clamping jaw away and enter the clamping jaw to wait for the sliding sleeve to move and realize clamping connection; when the sliding sleeve moves forwards, the sliding sleeve pushes the clamping jaws to converge inwards, so that the clamping jaws tightly grasp the externally connected joint.

2. The invention has a unique sealing structure: a. the flexible abutting mode enables the injection plug and the externally connected joint to be tightly connected, and the clamping jaw only needs to prevent the externally connected joint from being separated; b. in order to ensure that the soft injection plug continuously slides in the pipe body and is not easy to laterally deform, a sleeve is sleeved outside the soft injection plug, the part of the soft injection plug is positioned in the sleeve, and the soft injection plug is directly abutted against the pipe body at one side of the elastic piece; c. the injection plug is provided with a spring abutting inclined plane at the abutting position of the elastic piece, and the spring abuts against the inclined plane to expand laterally and abuts against the inner side wall of the pipe body under the action of the elastic piece and the spring abutting inclined plane.

3. The transmission part of the invention adopts a mechanical structure for transmission, thereby ensuring the stability of the transmission part. A retaining sleeve is fixed in the shell, the fixed seat slides in the retaining sleeve, and the movement of the fixed seat is limited through the retaining sleeve, so that the stability of the movement of the sliding sleeve and the fixed seat is ensured; and through keeping forming the active area in the cover, as long as lubricate the active area can ensure the movement of the drive unit to be continuous, make the drive area centralized, help to assemble and lubricate the treatment.

Drawings

FIG. 1 is one of the schematic structural diagrams of the present invention;

FIG. 2 is a second schematic structural diagram of the present invention;

FIG. 3 is a schematic view of the internal structure of the present invention;

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

FIG. 5 is a schematic illustration of an explosive structure according to the present invention;

FIG. 6 is a schematic view of the drive section of the present invention with the jaws unbound;

FIG. 7 is a schematic view of the transmission of the present invention with the jaws restrained;

FIG. 8 is a schematic view of the internal structure of the power transmission part of the present invention in a state of being clamped with a joint;

FIG. 9 is an enlarged view of the structure at B of FIG. 8;

FIG. 10 is an enlarged schematic view of FIG. 8 at C;

FIG. 11 is one of the exploded structural schematic views of the power transmission portion of the present invention;

fig. 12 is a second exploded view of the transmission part of the present invention.

In the figure: 1-a shell; 11-a retaining sleeve; 2-a sliding sleeve; 21-a fixed seat; 211-an internally threaded hole; 3-a pipe body; 31-a clamping jaw; 311-inclined plane; 38-a step portion; 39-a threaded portion; 4-a motor; 41-an output shaft; 42-a drive rod; 5-plugging; 51-a sleeve; 52-convex edge; 53-spring against ramp; 54-tapered inner wall; 6-an elastic member; 7-a circuit board; 71-a button; 8-a battery; 9-a linker; 91-steel balls; 92-a spring; 93-joint connecting groove.

Detailed Description

The invention will be further described in the following detailed description of embodiments thereof with reference to the accompanying drawings, in which figures 1-12 show:

an electric grease gun joint comprises a shell 1, wherein a pipe body 3 is fixedly arranged in the shell 1, a flow passage is formed in the pipe body 3, and a plurality of clamping jaws 31 are arranged at the end part of the pipe body 3; the pipe body 3 is provided with a sliding sleeve 2 at the position of the clamping jaw 31, the sliding sleeve 2 is moved, and the sliding sleeve 2 pushes the clamping jaw 31 to converge inwards; preferably, the end of the tube body 3 is integrally formed with a plurality of clamping jaws 31, and the whole tube body is made of metal, so that the structural stability of the tube body 3 is ensured. When the user connects the grease gun connector outwards, the clamping jaw 31 needs to be pushed into the externally connected connector 9, and the externally connected connector 9 overcomes the elasticity of the clamping jaw 31 and enters the clamping jaw 31. The external connector 9 enters the jaw 31 and the user has feedback of the connection and then presses the button 71 to drive the motor 4.

A motor 4 is fixedly arranged in the shell 1, a transmission component is arranged between the motor 4 and the sliding sleeve 2, the motor 4 rotates, and the transmission component can enable the sliding sleeve 2 to slide back and forth on the pipe body 3; the forward and backward movement of the sliding sleeve 2 is realized through the forward and backward rotation of the motor 4. The sliding sleeve 2 moves backwards or is kept at the rear part, the sliding sleeve 2 does not act on the clamping jaw 31, a user can align the clamping jaw 31 with the externally connected joint 9, the externally connected joint 9 can push the elastic clamping jaw 31 open and enter the clamping jaw 31, and the sliding sleeve 2 waits to move and realize clamping connection; when the sliding sleeve 2 moves forwards, the sliding sleeve 2 enables the pushing clamping jaws 31 to converge inwards, and therefore the clamping jaws 31 can grasp the externally connected connector 9.

The externally attached connectors are shown in fig. 8 and 9. The connector 9 of external connection is all from taking the check valve, and steel ball 91 and spring 92 form the check valve, consequently does not additionally set up the check valve in the electronic grease gun of this application connects, and clamping jaw 31 snap joint spread groove 93 realizes connecting.

The injection device is characterized in that a soft rubber injection plug 5 is arranged inside the pipe body 3, an injection channel is arranged in the injection plug 5, an elastic piece 6 is arranged in the pipe body 3, and the elastic piece 6 gives force to the injection plug to move towards one end of the clamping jaw 31. The elastic member 6 is preferably a spring, elastic soft rubber, or the like. Adopt soft notes stopper 5, when letting the user push in the clamping jaw 31 with outer joint 9 that links to each other, outer joint 9 that links to each other need overcome the effort of elastic component 6 and with annotate stopper 5 butt, because under the promotion of the soft characteristic of notes stopper and elastic component, the injection channel of annotating stopper 5 can with connect 9 effective butt, clamping jaw 31 only need prevent outer joint 9 that links from breaking away from can. The claw 31 not only has the function of preventing the injection plug 5 from being separated from one side of the claw 31, but also allows the injection plug 5 to wait for the externally connected connector 9 to enter through the structure, and the externally connected connector 9 needs to push the injection plug 5 to move towards the inside of the pipe body 3, so that the tight connection between the connector 9 and the injection plug 5 is facilitated. Preferably, the sliding sleeve 2 is far away from the clamping jaws 31, the clamping jaws 31 are reset under the elasticity of the clamping jaws 31, and the externally connected joint 9 can overcome the elasticity of the clamping jaws 31 so as to enter and exit the clamping jaws 31.

In order to make the soft plunger 5 slide continuously in the tube 3 and not easy to deform laterally, a metal sleeve 51 is sleeved outside the soft plunger 5, a part of the soft plunger 5 is located in the sleeve 51, and the soft plunger 5 is directly abutted against the tube 3 at one side of the elastic element 6. Preferably, the plunger 5 is formed with a flange 52 on the side of the elastic member 6, the flange 52 abuts against the end of the sleeve 51, and the outer side of the flange 52 abuts against the inner side wall of the tubular body 3. The bead 52 of the stopper 5 can abut against the end of the sleeve 51, expanding circumferentially to effect a seal between the stopper 5 and the body 3.

In order to make the sealing effect between the injection plug 5 and the pipe body 3 better, the following structure is provided: the injection plug 5 is provided with a spring abutting inclined surface 53 at the abutting position of the elastic piece 6, under the action of the elastic piece 6 and the spring abutting inclined surface 53, the injection plug 5 expands laterally and abuts against the inner side wall of the pipe body 3, the acting force of the elastic piece 6 is larger, and the sealing effect is better. Preferably, the injection passage in the injection plug 5 is conical, and the caliber of a discharge port of the injection passage is small. The conical injection channel can be effectively connected with the external connector 9 with a small diameter, and has the function of enabling the injection plug 5 to expand laterally, so that the sealing effect between the injection plug 5 and the pipe body 3 is better. The larger the pressure of the flowing grease in the pipe body 3 is, the better the sealing effect is.

A retaining sleeve 11 is fixed in the shell 1, the fixed seat 21 slides on the inner side of the retaining sleeve 11, and the fixed seat 21 is limited by the retaining sleeve 11, so that the stability of the movement of the sliding sleeve 2 and the fixed seat 21 is ensured; and an active area is formed in the retaining sleeve 11, so that the continuous movement of the transmission part can be ensured as long as the active area is lubricated, the transmission area is centralized, and the assembly and the lubrication treatment are facilitated.

A step part 38 is formed in the tube body 3, one end of the elastic element 6 is abutted against the step part 38, and the other end is abutted against the injection plug 5. Preferably, the step portion 38 is an annular flange integrally formed on the inner side of the tube body 3, and the annular flange can be formed by a process such as stamping or rolling.

As a preferable transmission component, a mechanical structure of thread transmission is adopted, and of course, a conventional structure such as gear transmission, rack and pinion transmission, ratchet transmission and the like which are common in the market can be adopted, as long as the sliding sleeve 2 is driven and moved back and forth by the motor 4. The transmission part comprises a driving rod 42, the driving rod 42 is fixedly connected with an output shaft 41 of the motor 4, an external thread is arranged on the driving rod 42, a fixed seat 21 is fixed on the sliding sleeve 2, and the fixed seat 21 is in threaded connection with the driving rod 42.

Preferably, the fixing base 21 is fixed to the sliding sleeve 2 by welding, an internal threaded hole 211 is formed in the fixing base 21, and the driving rod 42 is inserted into the internal threaded hole 211. The stable connection is performed with the simplest structure.

The clamping jaws 31 are in a converging state, and the clamping jaws 31 are positioned on the inner side of the sliding sleeve 2; the clamping jaw 31 is not acted by the sliding sleeve 2, and the clamping jaw 31 is positioned outside the sliding sleeve 2. When the clamping jaw 31 is exposed, a user can observe the state by naked eyes, and the state is in a non-locking state; when the clamping jaws 31 are positioned in the hidden sliding sleeve 2, the clamping jaws can be observed by naked eyes of a user, and the state is in a locking state. Is beneficial to the user to distinguish. And when locking state, clamping jaw 31 hides in sliding sleeve 2, can effectively guarantee the effect of clamping jaw 31 locking, effectively avoids clamping jaw 31 side direction to expand, guarantees the stability of locking.

The outer side of the clamping jaw 31 is provided with an inclined plane 311, and the sliding sleeve 2 is used for synchronously converging the clamping jaws 31 inwards through the inclined plane 311; the other end of the clamping jaw 31 of the pipe body 3 is provided with a thread part 39, and the pipe body can be connected with an externally connected grease gun through the thread part 39, and can also adopt common connection modes such as clamping buckle and interference connection.

The circuit board 7 is an external assistant part and is sent to a circuit board manufacturer according to the required requirements, the circuit board manufacturer can manufacture the corresponding circuit board 7 according to the requirements, the size and the mounting hole site position of the circuit board 7 are only given by the manufacturer, and the circuit board 7 can be taken out and mounted in the shell 1. The button switch may be a contact switch, a mechanical switch, a vibration switch, etc., directly mounted on the circuit board. The control of the forward and reverse rotation of the motor by various switches on the market and then the stopping of the rotation of the motor after a certain time are easily realized by those skilled in the art, and the circuit part is not the protection focus of the present invention, and therefore, the detailed description thereof is not provided.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides an electronic grease gun connects which characterized in that: the clamping device comprises a shell (1), wherein a pipe body (3) is fixedly arranged in the shell (1), a flow channel is arranged in the pipe body (3), and a plurality of clamping jaws (31) are arranged at the end part of the pipe body (3);

the pipe body (3) is provided with a sliding sleeve (2) at the position of the clamping jaw (31), the sliding sleeve (2) is moved, and the sliding sleeve (2) pushes the clamping jaw (31) to converge inwards;

a motor (4) is fixedly arranged in the shell (1), a transmission component is arranged between the motor (4) and the sliding sleeve (2), the motor (4) rotates, and the transmission component can enable the sliding sleeve (2) to slide back and forth on the pipe body (3);

a soft rubber injection plug (5) is arranged in the pipe body (3), an injection channel is arranged in the injection plug (5), an elastic piece (6) is arranged in the pipe body (3), and the elastic piece (6) gives a force for the injection plug (5) to move towards one end of the clamping jaw (31);

the motor is characterized in that a button (71), a battery (8) and a control circuit board (7) are arranged in the shell (1), the button (71) is pressed down, and the circuit board (7) can control the motor (4) to rotate forward and backward.

2. The electric grease gun fitting of claim 1, wherein: the end part of the pipe body (3) is integrally formed with a plurality of clamping jaws (31).

3. The electric grease gun joint according to claim 1 or 2, characterized in that: step parts (38) are formed in the pipe body (3), one end of the elastic piece (6) abuts against the step parts (38), and the other end of the elastic piece abuts against the injection plug (5).

4. The electric grease gun fitting of claim 3, wherein: the inner sliding type injection device is characterized in that a sleeve (51) is arranged in the pipe body (3), the injection plug (5) is sleeved on the sleeve (51), a convex edge (52) is formed on one side of the elastic piece (6) of the injection plug (5), the convex edge (52) abuts against the end portion of the sleeve (51), and the outer side of the convex edge (52) abuts against the inner side wall of the pipe body (3).

5. The electric grease gun joint according to claim 1, 2 or 4, characterized in that: the injection plug (5) is provided with a spring abutting inclined plane (53) at the abutting position of the elastic piece, and the injection plug (5) expands laterally and abuts against the inner side wall of the pipe body (3) under the action of the elastic piece (6) and the spring abutting inclined plane (53); the injection channel in the injection plug (5) is conical, and the caliber of a discharge hole of the injection channel is small.

6. The electric grease gun joint according to claim 1, 2 or 4, characterized in that: the transmission part comprises a driving rod (42), the driving rod (42) is fixedly connected with an output shaft (41) of the motor, an external thread is arranged on the driving rod (42), a fixed seat (21) is fixed on the sliding sleeve (2), and the fixed seat (21) is in threaded connection with the driving rod (42).

7. The electric grease gun fitting of claim 6, wherein: a retaining sleeve (11) is fixed in the shell (1), and the fixed seat (21) slides on the inner side of the retaining sleeve (11).

8. The electric grease gun fitting of claim 6, wherein: the fixing seat (21) is fixed on the sliding sleeve (2) in a welding mode, an internal thread hole (211) is formed in the fixing seat (21), and the driving rod (42) penetrates through the internal thread hole (211).

9. The electric grease gun joint according to claim 1, 2, 4, 7 or 8, characterized in that: the clamping jaws (31) are in a converging state, and the clamping jaws (31) are positioned on the inner side of the sliding sleeve (2); the clamping jaw (31) is not acted by the sliding sleeve (2), and the clamping jaw (31) is positioned outside the sliding sleeve (2).

10. The electric grease gun fitting of claim 8, wherein: the outer side of the clamping jaw (31) is provided with an inclined plane (311), and the sliding sleeve (2) enables the clamping jaws (31) to be synchronously gathered inwards through the inclined plane; body (3) are metal body (3), and body (3) are provided with screw thread portion (39) in the other end of clamping jaw (31).