Vehicle filling gun sealed by sealing cylinder

Abstract

The utility model discloses a vehicle filling gun sealed by a sealing cylinder. The vehicle filling gun comprises a filling gun body, a filling head, a piston mechanism, the sealing cylinder and a filling pipe. The upper end of the filling head is connected with one end of the filling gun body, and inner cavities of the filling head and the filling gun body are communicated. And the piston mechanism comprises a piston plate and a sliding barrel which are arranged in the inner cavity of the filling head. The piston plate is slidably arranged in an inner cavity of the filling head, the upper end of the sliding barrel is fixedly connected with the piston plate, and the lower end of the sliding barrel is located at a lower port of the filling head. The sealing cylinder is arranged in a groove in the outer wall of the filling head in a sleeved mode, and the sealing cylinder is fixedly connected with the side wall of the sliding cylinder body. The upper end of the filling pipe is fixedly connected with the filling gun body, and the lower end of the filling pipe penetrates through the piston plate and the sliding barrel in a sliding mode and then is located at a lower port of the filling head. When the filling gun is connected with a vehicle oil pot opening in a sealed mode, mechanisms such as a clamping jaw are not needed, and the oil pot opening is connected in a sealed mode through deformation of the sealing cylinder.

Description

Technical Field

[0001] The utility model relates to the field of vacuum filling guns, in particular to a vehicle filling gun sealed by a sealing cylinder. Background Art

[0002] In vehicle assembly production, vacuum filling equipment is required to evacuate the vehicle's antifreeze, power steering fluid, brake fluid and other liquid pipeline systems and then add the liquid. At present, a filling gun is usually used to seal and connect the vehicle's oil pot mouth, then the pipeline system is evacuated, and then the required liquid (such as the above-mentioned antifreeze, power steering fluid, brake fluid) is added to the vehicle. At present, when the filling gun is connected to the vehicle's oil pot mouth, the oil pot mouth is usually fixed by a claw while the flat sealing cylinder or O-ring is deformed to seal and connect the oil pot mouth. However, some oil pot shapes cannot be made into a claw-fixed structure, resulting in the filling gun being unable to be sealed and connected to the oil pot mouth. Utility Model Content

[0003] In view of the above problems, the utility model proposes a vehicle filling gun sealed by a sealing cylinder, which does not require a mechanism such as a claw when sealing and connecting the vehicle oil tank mouth, but uses the deformation of the sealing cylinder to achieve the sealing connection of the oil tank mouth, which well overcomes the above problems. Specifically, the technical solution of the utility model is as follows.

[0004] A vehicle filling gun sealed with a sealing cylinder comprises: a filling gun body, a filling head, a piston mechanism, a sealing cylinder and a filling tube. Wherein: the filling head is arranged vertically, and its upper end is connected to one end of the filling gun body and the inner cavities of the two are connected. The piston mechanism comprises a piston plate and a sliding cylinder arranged in the inner cavity of the filling head. The piston plate is slidably arranged in the inner cavity of the filling head, the upper end of the sliding cylinder is fixedly connected to the piston plate, and the lower end is located at the lower port of the filling head. The sealing cylinder is a cylindrical structure supported by an elastic material, which is sleeved in a groove on the outer wall of the filling head, and the sealing cylinder is fixedly connected to the side wall of the sliding cylinder. The upper end of the filling tube is fixedly connected to the filling gun body, and the lower end slides through the piston plate and the sliding cylinder and is located at the lower port of the filling head.

[0005] Furthermore, the sealing cylinder is connected to the side wall of the sliding cylinder through a fastener, and the side wall of the filling head is provided with a sliding groove for the fastener to move up and down.

[0006] Furthermore, an air inlet is provided on the side wall of the filling head, and the air inlet is located above the piston plate.

[0007] Furthermore, the filling gun body comprises a handle, a valve and a control button, wherein: the valve is arranged in the inner cavity of the handle, and the control button is arranged on the upper surface of the handle and connected to the valve.

[0008] Furthermore, the inlet of the valve is connected to the filling device, the outlet of the valve is connected to one end of the channel in the handle, the upper end of the filling pipe is connected to the other end of the channel, and the valve is arranged on the channel to control the opening and closing of the channel.

[0009] Furthermore, the side wall of the piston plate has a first sealing ring arranged in a groove thereof, and the first sealing ring is pressed against the side wall of the inner cavity of the filling head.

[0010] Furthermore, the inner side wall of the sliding cylinder has a second sealing ring arranged in a groove thereof, and the second sealing ring is pressed against the outer side wall of the filling pipe.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the vehicle filling gun of the utility model can utilize the piston mechanism to drive the sealing cylinder to deform outward, thereby making the filling head inserted in the vehicle oil pot mouth and the oil pot mouth sealed and connected, without the need for a sealing connection between the filling gun and the vehicle oil pot mouth through mechanisms such as claws, which effectively overcomes the problem that some oil pot shapes cannot be made into a claw-fixed structure, resulting in the filling gun being unable to be sealed and connected to the oil pot mouth. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0013] Figure 1 It is a schematic diagram of the structure of a vehicle filling gun sealed by a sealing cylinder in the following embodiments.

[0014] Figure 2 It is a schematic diagram of the interior of a vehicle filling gun sealed by a sealing cylinder in the following embodiments.

[0015] The marks in the figure represent: 1-filling gun body, 2-filling head, 3-piston mechanism, 4-sealing cylinder, 5-filling pipe, 6-air inlet, 7-vehicle oil tank mouth, 101-handle, 102-valve, 103-control button, 104-channel, 301-piston plate, 302-sliding cylinder, 303-first sealing ring, 304-second sealing ring. DETAILED DESCRIPTION

[0016] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0017] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or component needs to have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0018] Terminology explanation section: The terms "install", "connect", "connect", "fix" and the like in the present utility model should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. The technical solution of the present utility model is further explained in conjunction with the drawings and specific embodiments of the specification.

[0019] refer to Figure 1 and Figure 2 , an example of a vehicle filling gun sealed by a sealing cylinder is provided, comprising: a filling gun body 1, a filling head 2, a piston mechanism 3, a sealing cylinder 4 and a filling pipe 5. Specifically: the filling gun body 1 comprises a handle 101, a valve 102 and a control button 103. Wherein: the handle 101 is a horizontally arranged cylindrical structure, one end of which is open and the other end is closed. The valve 102 is arranged in the inner cavity of the handle 101. When in use, the inlet of the valve 102 is connected to the filling device through a pipeline. The control button 103 is arranged on the upper surface of the handle 101 and connected to the valve 102. The valve 102 can be a solenoid valve, etc., and the opening and closing of the valve 102 is controlled by the control button 103. The outlet of the valve 102 is connected to one end of the channel 104 in the handle 101. The valve 102 is arranged on the channel 104 to control the opening and closing of the channel 104. The filling head 2 is a cylindrical structure, which is arranged vertically, and the upper end of the filling head 2 is fixedly connected to one end of the filling gun body 1 and the inner cavities of the two are connected. It should be noted that the structural composition of the filling gun body 1 is only an exemplary description, and other structures or existing products can also be used. Then, the filling head 2 provided with the piston mechanism 3, the sealing cylinder 4 and the filling tube 5 is fixedly connected to the filling gun body and connected with its infusion channel, so that the liquid can enter the filling tube 5 through the infusion channel.

[0020] The piston mechanism 3 includes a piston plate 301 and a sliding cylinder 302 arranged in the inner cavity of the filling head 2. The piston plate 301 is slidably arranged in the inner cavity of the filling head 2, and the side wall of the piston plate 301 is in sealing contact with the side wall of the inner cavity of the filling head 2. The upper end of the sliding cylinder 302 is integrally fixedly connected with the piston plate 301, and the lower end is located at the lower end of the filling head 2. The sealing cylinder 4 is a cylindrical structure supported by elastic materials such as rubber or flexible plastic, which is sleeved in the groove on the outer wall of the filling head 2. The sealing cylinder 4 is connected to the side wall of the sliding cylinder 302 by fasteners such as bolts or screws, and the side wall of the filling head 2 has a slide groove for the fastener to move up and down. The upper end of the filling pipe 5 is connected to the other end of the channel 104, and the lower end slides through the piston plate 301 and the sliding cylinder 302 and is located at the lower end of the filling head 2. The liquid to be filled passes through the valve 102, the channel 104 and the filling pipe 5 in sequence and enters the vehicle oil pot. The side wall of the filling head 2 is provided with an air inlet 6, and the air inlet 6 is located above the piston plate 301, so that compressed air can be introduced to drive the piston mechanism 3 to slide downward.

[0021] When in use, the filling head 2 is inserted into the vehicle oil pot mouth 7, and then compressed air is introduced into the inner cavity of the filling head 2 through an air compressor to drive the piston plate 301 and the sliding cylinder 302 to move downward. At this time, the sealing cylinder 4 is restricted by the groove on the outer wall of the filling head 2 and cannot move downward, but deforms and expands outward, so that the outer wall of the sealing cylinder 4 is in close contact with the side wall of the vehicle oil pot mouth 7 to achieve a sealed connection. Unlike traditional filling guns, there is no need to use mechanisms such as claws to achieve a sealed connection between the filling gun and the vehicle oil pot mouth 7, which well overcomes the problem that some oil pot shapes cannot be made into a claw-fixed structure, resulting in the filling gun being unable to be sealed and connected to the oil pot mouth.

[0022] refer to Figure 2 In another embodiment, the side wall of the piston plate 301 of the vehicle filling gun sealed by the sealing cylinder of the above embodiment has a first sealing ring 303 arranged in its groove, and the first sealing ring 303 is pressed on the inner cavity side wall of the filling head 2. A second sealing ring 304 can also be arranged in the groove on the inner side wall of the sliding cylinder 302, and the second sealing ring 304 is pressed on the outer side wall of the filling pipe 5, so as to prevent leakage during filling of liquid, causing liquid to enter the space above the piston plate 301.

[0023] Finally, it should be noted that any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model. Although the above describes the specific implementation of the utility model in conjunction with the drawings, it is not a limitation on the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by those skilled in the art without creative labor are still within the protection scope of the utility model.

Claims

1. A vehicle filling gun sealed by a sealing cylinder, characterized in that: include: A filling gun body, a filling head, a piston mechanism, a sealing cylinder and a filling tube; wherein: the filling head is vertically arranged, and its upper end is connected to one end of the filling gun body and the inner cavities of the two are connected; the piston mechanism includes a piston plate and a sliding cylinder arranged in the inner cavity of the filling head; the piston plate is slidably arranged in the inner cavity of the filling head, the upper end of the sliding cylinder is fixedly connected to the piston plate, and the lower end is located at the lower port of the filling head; the sealing cylinder is a cylindrical structure supported by an elastic material, which is sleeved in a groove on the outer wall of the filling head, and the sealing cylinder is fixedly connected to the side wall of the sliding cylinder; the upper end of the filling tube is fixedly connected to the filling gun body, and the lower end slides through the piston plate and the sliding cylinder and is located at the lower port of the filling head.

2. The vehicle filling gun sealed by a sealing cylinder according to claim 1, characterized in that: The sealing cylinder is connected to the side wall of the sliding cylinder through a fastener, and a sliding groove for the fastener to move up and down is provided on the side wall of the filling head.

3. The vehicle filling gun sealed by a sealing cylinder according to claim 1, characterized in that: The side wall of the filling head is provided with an air inlet, and the air inlet is located above the piston plate.

4. The vehicle filling gun sealed by a sealing cylinder according to claim 1, characterized in that: The side wall of the piston plate is provided with a first sealing ring arranged in a groove thereof, and the first sealing ring is pressed against the side wall of the inner cavity of the filling head.

5. The vehicle filling gun sealed by a sealing cylinder according to claim 1, characterized in that: The inner side wall of the sliding cylinder is provided with a second sealing ring arranged in a groove thereof, and the second sealing ring is pressed on the outer side wall of the filling pipe.

6. The vehicle filling gun sealed by a sealing cylinder according to any one of claims 1 to 5, characterized in that: The filling gun body comprises a handle, a valve and a control button; wherein the valve is arranged in the inner cavity of the handle, and the control button is arranged on the upper surface of the handle and connected to the valve.

7. The vehicle filling gun sealed by a sealing cylinder according to claim 6, characterized in that: The inlet of the valve is connected to the filling device, the outlet of the valve is communicated with one end of the channel in the handle, the upper end of the filling pipe is communicated with the other end of the channel, and the valve is arranged on the channel.

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