Injection device for heat-conducting silicone grease

Abstract

The utility model discloses an injection device for heat-conducting silicone grease, and relates to the field of heat-conducting silicone grease coating. The device comprises a device main body, one side of the device main body is connected with a lifting rod through a connecting block, one side of the lifting rod is provided with a torsion spring, the top end of the lifting rod is provided with a connecting piece, the inner side of the connecting piece is connected with a movable rod through a connecting rod, and one end of the movable rod is fixedly provided with a positioning plate. The device body can be held by adopting a pen holding posture, then the lifting rod is pressed by an index finger, the lifting rod drives the movable rod to move through the connecting piece, then the positioning plate is separated from the positioning groove, the piston block can be pushed to move downwards under the action of the spring, silicone grease is extruded out, and when the extrusion amount is appropriate, a worker loosens the lifting rod, and the device body is pressed. And under the reset action of the torsional spring, the lifting rod is matched with the connecting piece to push the movable rod to reset, so that the positioning plate is clamped into the positioning groove, injection is stopped, and the problem that the pressing force is difficult to control can be avoided through the mode.

Description

Technical Field

[0001] The utility model relates to the field of thermal grease application, in particular to an injection device for thermal grease. Background Technique

[0002] Thermal grease is commonly known as heat dissipation paste. Thermal grease is a thermally conductive silicone grease-like composite made mainly of silicone ketone and added with materials with excellent heat resistance and thermal conductivity. It is used for heat conduction and dissipation of electronic components such as power amplifiers, transistors, electron tubes, and CPUs, so as to ensure the stability of the electrical performance of electronic instruments, meters, etc.

[0003] However, during the operation of the grease injection device, the operator needs to press the piston rod with his finger. During the pressing process, excessive force may be applied, resulting in a large amount of grease injection and thus waste. Secondly, there may be dust on the surface of the CPU, which needs to be wiped by the operator before injecting the grease. After the injection is completed, tools are needed to scrape and level the grease, which is troublesome to operate and affects work efficiency. Content of the Utility Model

[0004] Based on this, the purpose of the present utility model is to provide an injection device for thermal grease to solve the technical problems in the above background technique.

[0005] To achieve the above purpose, the present utility model provides the following technical solution: An injection device for thermal grease, including a device main body. One side of the device main body is connected with a seesaw rod through a connecting block, and a torsion spring is arranged on one side of the seesaw rod. A connecting piece is arranged at the top of the seesaw rod. An inner side of the connecting piece is connected with a movable rod through a connecting rod, and a positioning plate is fixed at one end of the movable rod. A piston block is arranged inside the device main body, and a movable column and a spring are respectively arranged at the top of the piston block. A positioning groove is formed on one side of the movable column. The bottom of the device main body is communicated with an injection nozzle through an injection head, and the bottom of the injection nozzle is flat. Scraping strips are fixed on the outer surface and the back of the injection head through fixing rods.

[0006] Further, a guiding sleeve is arranged at the top of the device main body, and the movable rod is located inside the guiding sleeve and is slidably matched with it.

[0007] By adopting the above technical solution, under the action of the guiding sleeve, the movable rod can move more stably left and right, improving the practicability.

[0008] Further, a plurality of groups of positioning grooves are arranged from top to bottom, and the positioning plate is adapted to the plurality of groups of positioning grooves.

[0009] By adopting the above technical solution, the plurality of groups of positioning grooves facilitate the positioning plate to be inserted for positioning at any time. When the positioning plate is inserted into the positioning groove, the piston block stops moving downward.

[0010] Further, the piston block is in contact with the inner wall of the device body.

[0011] By adopting the above technical solution, in the state of contact, all the silicone grease can be squeezed out. If there is a gap, the silicone grease will adhere to the inner wall of the device body during operation, resulting in waste.

[0012] Further, there are two groups of springs, and the two groups of springs are made of manganese steel material.

[0013] By adopting the above technical solution, the two groups of springs can exert downward pressure on the piston block, enabling the piston block to move stably downward. The manganese steel material increases the service life of the springs.

[0014] Further, an anti-slip sleeve is provided below the outer surface of the device body, and the anti-slip sleeve is made of rubber material.

[0015] By adopting the above technical solution, on the one hand, the anti-slip sleeve can avoid the phenomenon of slipping during operation, and on the other hand, it can increase the hand feeling when operating and holding.

[0016] Further, a pressing plate is fixed at the bottom end of the rocker.

[0017] By adopting the above technical solution, it is convenient for the staff to press the rocker through the pressing plate, and the operation is more convenient.

[0018] Further, there are two groups of scraping strips, and the two groups of scraping strips are made of silicone material.

[0019] By adopting the above technical solution, one group of scraping strips removes the dust on the CPU before injection, and then the other group of scraping strips can scrape the silicone grease flat when the injection head is used.

[0020] In summary, the present utility model mainly has the following beneficial effects: When the present utility model is working, it can be held in the posture of holding a pen to hold the device body, and then the rocker is pressed with the index finger. The rocker drives the movable rod to move through the connecting piece, so that the positioning plate is separated from the positioning groove. Under the action of the spring, the piston block can be pushed downward to extrude the silicone grease. When the extrusion amount is appropriate, the staff releases the rocker. Under the reset action of the torsion spring, the rocker cooperates with the connecting piece to push the movable rod to reset, so that the positioning plate is snapped into the positioning groove, thereby stopping the injection. This method can avoid the problem that the pressing force is difficult to control and avoid the waste of silicone grease; moreover, the injection nozzle can be moved simultaneously during injection. The movement of the injection nozzle can increase the coating range. During the movement of the injection nozzle, the two groups of scraping strips will be driven to move. The front group of scraping strips can scrape off the dust and impurities during the movement, and the latter group of scraping strips can further scrape the silicone grease flat and evenly. The structure is simple and the stability is good, greatly improving the work efficiency. Description of the Drawings

[0021] Figure 1 is a schematic structural view of the present utility model;

[0022] Figure 2 is a schematic cross-sectional structural view of the device main body of the present utility model;

[0023] Figure 3 is a schematic structural view of the rocker of the present utility model;

[0024] Figure 4 of the present utility model Figure 3 is an enlarged structural view of part A in the present utility model.

[0025] In the figure: 1. Device main body; 2. Movable column; 3. Anti-slip sleeve; 4. Injection head; 5. Injection nozzle; 6. Fixed rod; 7. Scraping strip; 8. Connecting block; 9. Rocker; 10. Pressing plate; 11. Directional sleeve; 12. Movable rod; 13. Positioning plate; 14. Connecting piece; 15. Positioning groove; 16. Piston block; 17. Torsion spring; 18. Connecting rod; 19. Spring. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as limiting the present utility model.

[0027] Next, the embodiments of the present utility model will be described according to the overall structure of the present utility model.

[0028] Embodiment 1: An injection device for thermal conductive silicone grease, as Figures 1-4 shown, includes a device main body 1. One side of the device main body 1 is connected to a rocker 9 through a connecting block 8, and a torsion spring 17 is provided on one side of the rocker 9. A connecting piece 14 is provided at the top of the rocker 9. The inner side of the connecting piece 14 is connected to a movable rod 12 through a connecting rod 18, and a positioning plate 13 is fixed at one end of the movable rod 12. A directional sleeve 11 is provided at the top of the device main body 1, and the movable rod 12 is located inside the directional sleeve 11 and is slidably matched with it. Under the action of the directional sleeve 11, the movable rod 12 can move more stably left and right, improving the practicability. A piston block 16 is provided inside the device main body 1, and a movable column 2 and a spring 19 are respectively provided at the top of the piston block 16. A positioning groove 15 is opened on one side of the movable column 2. The bottom of the device main body 1 is communicated with an injection nozzle 5 through an injection head 4, and the bottom of the injection nozzle 5 is flat. Scraping strips 7 are fixed on the outer surface and the back of the injection head 4 through fixed rods 6. There are two groups of scraping strips 7. The two groups of scraping strips 7 are made of silicone material. One group of scraping strips 7 scrapes the dust on the CPU before injection, and the other group of scraping strips 7 can scrape the silicone grease flat when the injection head 4 is used.

[0029] Refer toFigures 1-3 In the above embodiment, there are several groups of positioning grooves 15 arranged from top to bottom, and the positioning plate 13 is adapted to the several groups of positioning grooves 15. The several groups of positioning grooves 15 facilitate the positioning plate 13 to be inserted for positioning at any time. When the positioning plate 13 is inserted into the positioning groove 15, the piston block 16 stops moving downward.

[0030] Refer to Figure 2 In the above embodiment, the piston block 16 is in contact with the inner wall of the device body 1. In the contact state, all the silicone grease can be squeezed down. If there is a gap, the silicone grease will stick to the inner wall of the device body 1 during operation, resulting in waste.

[0031] Refer to Figure 2 In the above embodiment, there are two groups of springs 19, and the two groups of springs 19 are made of manganese steel material. The two groups of springs 19 can exert downward pressure on the piston block 16, so that the piston block 16 can move downward stably. The manganese steel material increases the service life of the spring 19.

[0032] Refer to Figures 1-3 In the above embodiment, a pressing plate 10 is fixed to the bottom end of the rocker 9. It is convenient for the staff to press the rocker 9 through the pressing plate 10, and the operation is more convenient.

[0033] Embodiment 2: To improve the comfort of holding, Embodiment 2 is improved on the basis of Embodiment 1. Refer to Figures 1-2 A non-slip sleeve 3 is provided below the outer surface of the device body 1, and the non-slip sleeve 3 is made of rubber material. On the one hand, the non-slip sleeve 3 can avoid slipping during operation, and on the other hand, it can increase the hand feeling when operating and holding.

[0034] The implementation principle of the present utility model is as follows: During work, the staff can hold the device body 1 in the posture of holding a pen, and then press the rocker 9 with the index finger. The rocker 9 drives the movable rod 12 to move through the connecting piece 14, so that the positioning plate 13 is separated from the positioning groove 15. Under the action of the spring 19, the piston block 16 can be pushed to move downward to extrude the silicone grease. During injection, the injection nozzle 5 can be moved at the same time. The movement of the injection nozzle 5 can increase the coating range. During the movement of the injection nozzle 5, the two groups of scraping strips 7 will be driven to move. The first group of scraping strips can scrape off dust and impurities during the movement, and the second group of scraping strips 7 can further scrape and spread the silicone grease evenly. After the application is completed, the staff releases the rocker 9. Under the reset action of the torsion spring 17, the rocker 9 cooperates with the connecting piece 14 to push the movable rod 12 to reset, so that the positioning plate 13 is snapped into the positioning groove 15, and the injection stops.

[0035] Although embodiments of the present utility model have been shown and described, the specific embodiments are only explanations of the present utility model and are not limitations thereof. The specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions, and variations that do not contribute creatively to the embodiments as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. A thermal grease injection device, comprising a device body (1), characterized in that: One side of the device body (1) is connected to a rocker (9) via a connecting block (8), and a torsion spring (17) is provided on one side of the rocker (9); a connecting piece (14) is provided at the top end of the rocker (9); the inner side of the connecting piece (14) is connected to a movable rod (12) via a connecting rod (18), and a positioning plate (13) is fixed to one end of the movable rod (12); a piston block (16) is provided inside the device body (1), and a movable column (2) and a spring (19) are respectively provided on the top of the piston block (16); a positioning groove (15) is provided on one side of the movable column (2); the bottom of the device body (1) is connected to an injection nozzle (5) via an injection head (4), and the bottom of the injection nozzle (5) is flat; the outer surface and back of the injection head (4) are fixed with a scraper (7) via a fixing rod (6).

2. The thermal grease injection device according to claim 1, characterized in that: A directional sleeve (11) is provided on the top of the device body (1), and the movable rod (12) is located inside the directional sleeve (11) and is slidably matched therewith.

3. The thermal grease injection device according to claim 1, characterized in that: The positioning grooves (15) are provided in a plurality of groups from top to bottom, and the positioning plates (13) are adapted to the plurality of groups of positioning grooves (15).

4. The thermal grease injection device according to claim 1, characterized in that: The piston block (16) is in contact with the inner wall of the device body (1).

5. The thermal grease injection device according to claim 1, characterized in that: The springs (19) are provided in two groups, and the two groups of springs (19) are made of manganese steel material.

6. The thermal grease injection device according to claim 1, characterized in that: An anti-slip cover (3) is provided below the outer surface of the device body (1), and the anti-slip cover (3) is made of rubber material.

7. The thermal grease injection device according to claim 1, characterized in that: A pressing plate (10) is fixed to the bottom end of the rocker (9).

8. The thermal grease injection device according to claim 1, characterized in that: The scraper strips (7) are provided in two groups, and the two groups of scraper strips (7) are made of silicone material.

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