Local paint spraying device for automobile parts
By using an anti-adhesion switch cover assembly to unlock the non-threaded connection between the lid and the body of the paint container, the problem of internal thread adhesion of the paint container lid is solved, which simplifies operation, reduces paint pollution, and extends equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU RENSHENG AUTO PARTS CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-24
AI Technical Summary
In existing automotive parts partial painting devices, the inner threads of the paint can lid are easily covered by paint, causing adhesion, which increases the difficulty of operation and time cost. Furthermore, frequent rotation of the can lid may lead to paint leakage and wear on the thread structure.
The anti-sticking switch cover assembly includes a first link, a second link, a third link, a return tension spring, and a lid locking tongue. The lid is unlocked by pulling up the operating cylinder block on the top of the paint pot lid, and the built-in tension spring achieves automatic reset and locking, avoiding the sticking problem of threaded connections.
It simplifies the operation process, improves operational efficiency and convenience, reduces the chance of paint contamination, extends equipment lifespan, and lowers maintenance costs.
Smart Images
Figure CN224157101U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automobile manufacturing and processing technology, and more specifically, it relates to a local painting device for automobile parts. Background Technology
[0002] A spot painting system for automotive parts is a specialized device for precise painting of automotive components. These systems are typically designed to meet the painting needs of specific areas or details, rather than for overall coating of the entire part. They can be used to repair damaged or worn coatings, apply the initial coat to newly manufactured parts, or treat areas requiring special colors or protective layers during production. Existing spot painting systems for automotive parts usually use a threaded connection between the paint canister and the cap. The cap achieves a tight seal through its threaded engagement with the canister body. When paint needs to be added, the operator must manually rotate the cap to remove it from the canister body. After filling, the cap is screwed back onto the canister body to ensure a good seal and prevent paint leakage.
[0003] Based on the above, in existing automotive parts partial painting devices, the paint can lid and the can body are usually connected and fixed by threads. However, in actual use, the inner thread of the can lid is easily covered by paint, which will stick after the paint dries, making the can lid difficult to open, increasing the difficulty of operation and time cost. In order to unscrew the stuck can lid, users often need to apply a lot of force, which may not only cause paint to spill accidentally, but may also contaminate the device or the paint itself. Frequent forceful rotation of the can lid may also accelerate the wear of the thread structure and shorten its service life. The design of the traditional threaded can lid means that when users open or close the can lid, their hands inevitably come into contact with excess paint, which is not only unhygienic, but also increases the burden of cleaning. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a partial painting device for automotive parts, which solves the problem that the inner thread of the paint can lid in the existing partial painting device for automotive parts is covered by paint and thus sticks, making it difficult to open the can lid.
[0005] The purpose and effect of this utility model for a partial painting device for automotive parts are achieved by the following specific technical means:
[0006] A device for spot painting of automotive parts, comprising:
[0007] The main body of the paint spray gun is a spray gun for a partial spray painting device;
[0008] The paint container is cylindrical in shape and is connected to the paint gun body via a lower circular tube. Circular through holes are provided on the front and rear sides of the upper end of the paint container.
[0009] The paint container lid is a disc-shaped structure with a circular blind hole on the upper surface, the paint container lid has a hollow structure inside, and a circular groove is formed on the lower surface of the paint container lid.
[0010] The lower lid limiting block is a rectangular sheet structure and is fixedly installed at the upper end of the rear end face of the paint pot body.
[0011] The upper limit block for the lid is a rectangular block structure and is fixedly installed on the rear end face of the paint pot lid.
[0012] The lid switch head is a cylindrical structure, and the cylindrical surface of the lid switch head is slidably connected to the inner wall of the circular hole in the paint lid.
[0013] An anti-sticking switch cover assembly is disposed inside the cavity of the paint pot lid.
[0014] Furthermore, the anti-sticking switch cover assembly includes:
[0015] The first connecting rod is a cylindrical structure, and its upper end is concentrically fixed to the lower end face of the lid opening and closing head.
[0016] The second link is a cylindrical structure consisting of two parts, with the inner ends of the two second links hinged to the left and right sides of the first link, respectively.
[0017] The third link consists of two cylindrical structures. The inner ends of the two third links are hinged to the outer ends of the second link, and the outer ends of the third links are simultaneously slidably connected to the inner walls of the front and rear sides of the paint pot lid and the cylindrical through hole of the paint pot body.
[0018] Furthermore, the anti-sticking switch cover assembly also includes:
[0019] A reset tension spring is provided, wherein the upper end of the reset tension spring is concentrically fixed to the lower end face of the first connecting rod, and the lower end of the reset tension spring is elastically connected to the bottom inner wall of the paint pot lid.
[0020] Furthermore, the anti-sticking switch cover assembly also includes:
[0021] The lid latch consists of two rectangular sheet-like structures. The two lid latches are fixedly connected to the outer ends of the two third connecting rods. The lid latches are movably inserted into the rectangular grooves at the front and rear ends of the inner wall of the paint lid.
[0022] Furthermore, the anti-sticking switch cover assembly also includes:
[0023] The lid alignment block is a cylindrical block structure consisting of two pieces, which are positioned on the upper surface of the lid limiting lower block.
[0024] The kettle lid alignment holes are circular groove structures with two holes, which are movably connected to two kettle lid alignment blocks.
[0025] Furthermore, the anti-sticking switch cover assembly also includes:
[0026] The anti-slip texture on the lid is a textured structure composed of multiple rectangular rings, and the anti-slip texture is set on the cylindrical surface of the paint lid.
[0027] Compared with the prior art, the present invention has the following beneficial effects:
[0028] First, the device features an anti-sticking switch cover assembly. Users can unlock and separate the lid from the pot body simply by pulling up the operating cylinder block located on top of the paint pot lid. This design avoids the sticking problem caused by paint residue on the threads in traditional threaded connections. At the same time, due to the built-in tension spring, when it is necessary to reinstall the lid, simply place the lid on the pot and release the operating block, and the locking tongue will automatically reset and lock. The whole process is simple and quick, greatly improving operational efficiency and convenience.
[0029] Secondly, in the traditional way, users need to use their whole hand to rotate the lid to open or close it, which can easily cause excess paint to get on their hands. This is not only unhygienic but may also cause inconvenience to subsequent work. The new partial spray painting device allows users to easily unlock and pick up the lid by simply pulling the top operating block, reducing the chance of direct contact with paint and thus keeping their hands clean, providing better hygiene protection.
[0030] Furthermore, the use of a non-threaded connection method with anti-sticking features effectively prevents the lid from being difficult to open due to the paint drying out, reducing equipment maintenance frequency and the time spent cleaning sticky areas. In addition, this design also helps extend the lifespan of components and reduce long-term maintenance costs.
[0031] This invention features an anti-sticking switch cover assembly. Simply pulling up the operating cylinder at the top of the paint container lid unlocks and separates the lid from the container body. An internal tension spring automatically resets and locks the lid in place. This simplifies the operation, improves efficiency, and avoids the paint residue and sticking problems common with traditional threaded connections. This design allows users to open and close the container without direct contact with the paint, keeping their hands clean and providing better hygiene. It also reduces maintenance costs and time spent due to paint contamination, effectively extending the equipment's lifespan and lowering long-term operating costs. Attached Figure Description
[0032] Figure 1 This is a schematic diagram of the overall left front view of this utility model.
[0033] Figure 2 This is a schematic diagram of the overall left rear view of this utility model.
[0034] Figure 3 This is a top view of the structure of the pot body and lid of this utility model after separation.
[0035] Figure 4 This is a structural schematic diagram of the pot body and lid of this utility model, viewed from below after separation.
[0036] Figure 5 This is a structural schematic diagram of the anti-sticking switch cover assembly of this utility model.
[0037] Figure 6 This is a structural schematic diagram of the side sectional view of the main body of this utility model.
[0038] Figure 7 This is a utility model Figure 1 A structural schematic diagram of the enlarged view at point A in the middle.
[0039] In the diagram, the correspondence between component names and drawing numbers is as follows:
[0040] 1. First connecting rod; 2. Second connecting rod; 3. Third connecting rod; 4. Return tension spring; 5. Lid locking tongue; 6. Lid alignment block; 7. Lid alignment hole; 8. Lid anti-slip texture; 9. Spray gun body; 10. Paint container body; 11. Paint container lid; 12. Lower lid limiting block; 13. Upper lid limiting block; 14. Lid switch head. Detailed Implementation
[0041] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0042] Example 1:
[0043] As attached Figure 1 To be continued Figure 7 As shown:
[0044] This utility model provides a device for localized painting of automotive parts, comprising:
[0045] The main body of the paint gun 9 is a spray gun for a partial spraying device;
[0046] Paint container 10 is a cylindrical structure. The paint container 10 is connected and fixed to the paint gun body 9 through the lower round tube. Circular through holes are opened on the front and rear sides of the upper end of the paint container 10.
[0047] Paint pot lid 11 is a disc-shaped structure with a circular blind hole on the upper end face. The paint pot lid 11 has a hollow structure inside and a circular groove on the lower end face.
[0048] The lower lid limiting block 12 is a rectangular sheet structure and is fixedly installed at the upper end of the rear end face of the paint pot body 10.
[0049] The upper lid limiting block 13 is a rectangular block structure and is fixedly installed on the rear end face of the paint pot lid 11.
[0050] The lid switch head 14 is a cylindrical structure, and the cylindrical surface of the lid switch head 14 is slidably connected to the inner wall of the circular hole opened in the paint lid 11.
[0051] An anti-sticking switch cover assembly is installed inside the cavity of the paint pot lid 11.
[0052] The anti-stick switch cover assembly includes:
[0053] The first connecting rod 1 is a cylindrical structure, and the upper end of the first connecting rod 1 is concentrically fixed to the lower end face of the lid opening and closing head 14.
[0054] The second link 2 is a cylindrical structure consisting of two parts. The inner ends of the two second links 2 are respectively hinged to the left and right sides of the first link 1.
[0055] The third link 3 consists of two cylindrical components. The inner ends of the two third links 3 are hinged to the outer ends of the second links 2. The outer ends of the third links 3 are slidably connected to the inner walls of the front and rear sides of the paint pot lid 11 and the cylindrical through hole of the paint pot body 10. When paint needs to be added to the paint pot body 10, the lid switch head 14 is pulled upward to move the first link 1 upward, which in turn drives the two second links 2 to rotate upward simultaneously, thereby causing the two third links 3 to slide inward. Its function is to transmit the upward pulling of the lid switch head 14 to the inward sliding of the third links 3.
[0056] The anti-stick switch cover assembly also includes:
[0057] The reset tension spring 4 is a tension spring structure. The upper end of the reset tension spring 4 is concentrically fixed to the lower end face of the first connecting rod 1, and the lower end of the reset tension spring 4 is elastically connected to the bottom inner wall of the paint pot lid 11. In use, since the reset tension spring 4 is a tension spring, its normal state is a compressed state. When the lid switch head 14 is lifted upward and then released, the lid switch head 14 will return to the initial position downward due to the elastic force of the reset tension spring 4. Its function is to enable the lid switch head 14 to have an automatic reset function.
[0058] The anti-stick switch cover assembly also includes:
[0059] The lid locking tongue 5 consists of two rectangular sheet-like structures. The two lid locking tongues 5 are fixedly connected to the outer ends of the two third connecting rods 3. The lid locking tongues 5 are movably inserted into the rectangular grooves at the front and rear ends of the inner wall of the paint pot lid 11. During use, because the front and rear ends of the paint pot body 10 and the paint pot lid 11 are respectively provided with through holes and grooves, the lid locking tongues 5 located at the ends of the third connecting rods 3 can be movably inserted into the paint pot body 10 and the paint pot lid 11. When the two third connecting rods 3 slide outwards, the lid locking tongues 5 lock the paint pot body 10 and the paint pot lid 11. When the two third connecting rods 3 slide inwards, the lid locking tongues 5 unlock the paint pot body 10 and the paint pot lid 11. Its function is to enable the paint pot body 10 and the paint pot lid 11 to perform the functions of removing and locking the lid.
[0060] The anti-stick switch cover assembly also includes:
[0061] The lid alignment block 6 is a cylindrical block structure with two pieces. The two lid alignment blocks 6 are set on the upper surface of the lid limiting lower block 12.
[0062] The lid alignment hole 7 has two circular groove structures. The two lid alignment holes 7 are movably connected to the two lid alignment blocks 6. In use, when the paint pot lid 11 is put back on the paint pot body 10, the user aligns the lower lid limiting block 12 and the upper lid limiting block 13, so that the lid alignment blocks 6 set on the lower lid limiting block 12 and the upper lid limiting block 13 are connected to the lid alignment hole 7 for mutual limiting. Its function is to ensure the effectiveness of the lid locking tongue 5.
[0063] The anti-stick switch cover assembly also includes:
[0064] The anti-slip texture 8 on the lid is a textured structure composed of multiple rectangular rings. The anti-slip texture 8 is set on the cylindrical surface of the paint kettle lid 11. During use, when lifting the paint kettle lid 11, the user needs to lift the lid switch head 14 while picking up the cylindrical surface of the anti-slip texture 8. The texture on the cylindrical surface of the anti-slip texture 8 can effectively increase the friction between the hand and the paint kettle lid 11, thus reducing the probability of slipping when picking it up.
[0065] The specific usage and function of this first embodiment are as follows:
[0066] During use, when adding paint to the paint pot 10, pulling up the lid switch head 14 causes the first connecting rod 1 to move upward, which in turn causes the two second connecting rods 2 to rotate upward simultaneously, thereby causing the two third connecting rods 3 to slide inward. This converts the upward pulling of the lid switch head 14 into the inward sliding of the third connecting rods 3. Since the return tension spring 4 is a tension spring, its normal state is compressed. When the lid switch head 14 is lifted and then released, it will return to its initial position due to the elastic force of the return tension spring 4. This provides the lid switch head 14 with an automatic reset function. Because the front and rear ends of the paint pot 10 and the paint pot lid 11 are respectively provided with through holes and grooves, the lid locking tongue 5 located at the end of the third connecting rod 3 can be movably inserted into the paint pot 10 and the paint pot lid 11. When the lid latch 5 slides outward, it locks the paint pot body 10 and the paint pot lid 11. When the two third connecting rods 3 slide inward, the lid latch 5 unlocks the paint pot body 10 and the paint pot lid 11. Its function is to enable the paint pot body 10 and the paint pot lid 11 to remove and lock the lid. When the paint pot lid 11 is put back on the paint pot body 10, the user aligns the lower lid limiting block 12 and the upper lid limiting block 13, so that the lid alignment block 6 and the lid alignment hole 7 set on the lower lid limiting block 12 and the upper lid limiting block 13 are inserted into each other for limitation. Its function is to ensure the effectiveness of the lid locking function of the lid latch 5. When removing the paint pot lid 11 upward, the user needs to lift the lid switch head 14 upward while picking up the cylindrical surface of the anti-slip texture 8 of the lid. The texture on the cylindrical surface of the anti-slip texture 8 of the lid can effectively increase the friction between the hand and the paint pot lid 11, reducing the probability of slipping when picking it up.
Claims
1. A device for localized painting of automotive parts, characterized in that: The device for spot painting of automotive parts includes: The main body of the paint spray gun (9) is a spray gun of a local spray painting device; Paint pot body (10), the paint pot body (10) is a cylindrical structure, the paint pot body (10) is connected and fixedly connected to the paint gun body (9) through the lower round tube, and the front and rear sides of the upper end of the paint pot body (10) are respectively provided with circular through holes; Paint pot lid (11), the paint pot lid (11) is a disc-shaped structure with a circular blind hole on the upper end face, the paint pot lid (11) has a cavity structure inside, and a circular groove is provided on the lower end face of the paint pot lid (11). The lower lid limiting block (12) is a rectangular sheet structure and is fixedly installed at the upper end of the rear end face of the paint pot body (10). The upper lid limiting block (13) is a rectangular block structure and is fixedly installed on the rear end face of the paint pot lid (11). The lid switch head (14) is a cylindrical structure, and the cylindrical surface of the lid switch head (14) is slidably connected to the inner wall of the circular hole opened in the paint lid (11). An anti-sticking switch cover assembly is disposed inside the cavity of the paint pot lid (11).
2. The partial painting device for automotive parts as described in claim 1, characterized in that: The anti-sticking switch cover assembly includes: The first connecting rod (1) is a cylindrical structure, and the upper end of the first connecting rod (1) is concentrically fixed to the lower end face of the lid switch head (14). The second link (2) is a cylindrical structure consisting of two parts. The inner ends of the two second links (2) are respectively hinged to the left and right sides of the first link (1). The third link (3) is a cylindrical structure with two parts. The inner ends of the two third links (3) are respectively hinged to the outer ends of the second link (2). The outer ends of the third links (3) are simultaneously slidably connected to the inner walls of the front and rear sides of the paint pot lid (11) and the cylindrical through hole of the paint pot body (10).
3. The partial painting device for automotive parts as described in claim 2, characterized in that: The anti-sticking switch cover assembly also includes: The reset tension spring (4) is a tension spring structure. The upper end of the reset tension spring (4) is concentrically fixed to the lower end face of the first connecting rod (1), and the lower end of the reset tension spring (4) is elastically connected to the bottom inner wall of the paint pot lid (11).
4. The partial painting device for automotive parts as described in claim 3, characterized in that: The anti-sticking switch cover assembly also includes: The lid locking tongue (5) is a rectangular sheet structure with two pieces. The two lid locking tongues (5) are fixedly connected to the outer ends of the two third connecting rods (3). The lid locking tongues (5) are movably inserted into the rectangular grooves at the front and rear ends of the inner wall of the paint lid (11).
5. The partial painting device for automotive parts as described in claim 1, characterized in that: The anti-sticking switch cover assembly also includes: The lid alignment block (6) is a cylindrical block structure with two pieces. The two lid alignment blocks (6) are set on the upper surface of the lid limiting lower block (12) on the left and right. The lid alignment hole (7) is a circular groove structure with two locations. The two lid alignment holes (7) are movably connected to the two lid alignment blocks (6).
6. The partial painting device for automotive parts as described in claim 1, characterized in that: The anti-sticking switch cover assembly also includes: The anti-slip texture (8) on the lid is a textured structure composed of multiple rectangular rings. The anti-slip texture (8) is set on the cylindrical surface of the paint lid (11).