Spraying tool for case housing
By designing a chassis cover painting fixture and using intermediate supports and hanging plates to block ventilation holes, the problem of paint entering the interior during the chassis cover painting process was solved, achieving rapid fixation and efficient painting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-03-27
AI Technical Summary
In existing technologies, during the painting process of the chassis cover, paint can easily enter the interior through the ventilation holes, affecting the painting quality.
A chassis cover painting fixture was designed, including a middle support, an upper base plate and a lower base plate, a left hanging plate and a right hanging plate, for fixing the chassis cover and sealing the ventilation holes, and for suspending it on the painting conveyor line for painting.
It enables quick fixing of the chassis cover and internal protection, preventing the inner surface from being painted, and improving painting efficiency and quality.
Smart Images

Figure CN121732345A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of chassis coating technology, and more particularly to a chassis cover coating fixture. Background Technology
[0002] During the manufacturing process of the chassis cover, surface painting is required. Currently, the chassis cover mainly consists of a cover body, with left and right side walls on both sides. The top and bottom of the cover body have upper and lower folded edges, respectively. Several ventilation holes are provided on the left and right side walls, and cover mounting lugs are provided on the vertical sides of the left and right side walls. After machining, the chassis cover needs to be painted on its outer surface. However, painting can only be done on the outer surface, not the inner surface. Furthermore, due to the presence of ventilation holes, paint can seep into the interior during painting, potentially causing the inner surfaces to be painted around the ventilation holes as well, thus affecting the painting quality of the chassis cover. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to provide a chassis cover spraying fixture that can quickly fix the chassis cover and protect the interior, and facilitate hanging for painting.
[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: a chassis cover spraying fixture, wherein the chassis cover includes a cover body, and a left side wall and a right side wall are provided on the left and right sides of the cover body. An upper folded edge and a lower folded edge are respectively provided at the upper and lower ends of the cover body. A plurality of ventilation holes are provided on the left and right side walls. Cover hanging ears are provided on the vertical sides of the left and right side walls. The spraying fixture includes a central support, and an upper base plate and a lower base plate are provided on the central support. The upper folded edge and the lower folded edge are respectively fastened to the upper base plate and the lower base plate. Ventilation hole sealing plates for sealing ventilation holes are snapped onto the inner sides of the left and right side walls. A left hanging plate and a right hanging plate are also provided on the left and right sides of the upper and lower base plates. The left hanging plate and the right hanging plate are respectively hooked and engaged with the cover hanging ears on the left and right side walls. Hanging holes are provided at the upper ends of the left hanging plate and the right hanging plate.
[0005] As a preferred embodiment, the left and right hanging plates have the same structure and are symmetrically arranged. The left hanging plate is provided with a hanging plate lug, and the hanging plate lug and / or the cover lug are provided with a hanging groove. The hanging plate lug hooks and engages with the corresponding cover lug.
[0006] As a preferred embodiment, a bolt-connecting post is provided on the inner side of the housing body. The vent sealing plate includes a sealing plate portion and a connecting plate portion connected in an L-shape. The sealing plate portion fits against the left or right side wall to seal the vent. The connecting plate portion is provided with a sleeve hole that fits onto the bolt-connecting post. The connecting plate portion fits against the inner side of the housing body.
[0007] As a preferred embodiment, the upper base plate and the lower base plate are symmetrically covered by the chassis cover on their front and rear sides, and the front and rear ends of the left and right mounting plates are provided with mounting lugs.
[0008] As a preferred embodiment, positioning grooves are provided on the left and right sides of both the upper and lower base plates, and the left and right hanging plates are respectively constrained within the positioning grooves.
[0009] As a preferred embodiment, the vent sealing plate has an L-shaped bend on its sealing plate portion, and the edges of the left and right side walls are also provided with connecting strips. The bend and the connecting strips are in contact and cooperate with each other. The connecting strips and the cover body cooperate to constrain the front and rear position of the vent sealing plate.
[0010] As a preferred embodiment, the intermediate support further includes a vertical plate connecting the upper base plate and the lower base plate. The vertical plate is provided with vertical reinforcing ribs, which are welded to the upper base plate and the lower base plate and fixed by insertion.
[0011] After adopting the above technical solution, the effect of the present invention is as follows: The spraying fixture includes an intermediate support, on which an upper base plate and a lower base plate are arranged parallel to each other. The upper folded edge and the lower folded edge are respectively fastened to the upper base plate and the lower base plate. The inner sides of the left side wall and the right side wall are fitted with vent sealing plates for sealing ventilation holes. The left and right sides of the upper base plate and the lower base plate are also provided with a left hanging plate and a right hanging plate, which are respectively hung on the covers on the left side wall and the right side wall. The ear hooks are engaged, and the upper ends of the left and right hanging plates are provided with hanging holes. Therefore, during assembly, the vent sealing plates are first snapped onto the left and right side walls to seal the ventilation holes. Then, the upper and lower folded edges are fastened onto the upper and lower base plates. At this time, the chassis cover is supported on the upper and lower base plates. Then, the left and right hanging plates are installed from the left and right sides to engage with the ear hooks on the cover. Finally, the hanging holes are hooked onto the hooks of the paint spraying conveyor line to paint the outer surface of the chassis cover. The painting fixture of this embodiment can protect the inside of the chassis cover, is easy to assemble, and avoids the inner surface from being painted.
[0012] Furthermore, since the left and right hanging plates have the same structure and are symmetrically arranged, the left hanging plate is provided with a hanging plate lug, and the hanging plate lug and / or the cover lug are provided with a hanging groove. The hanging plate lug hooks and engages with the corresponding cover lug. Therefore, during assembly, the hanging plate lug on the left hanging plate is first misaligned with the cover lug, and then it is slid horizontally upward to complete the hanging plate lug being locked in the hanging groove, making hooking convenient.
[0013] Furthermore, since the inner side of the housing body is provided with bolt connecting posts, the vent sealing plate includes a sealing plate part and a connecting plate part connected in an L-shape. The sealing plate part fits against the left or right side wall to seal the ventilation hole. The connecting plate part is provided with a sleeve hole that fits onto the bolt connecting posts. The connecting plate part fits against the inner side of the housing body. Therefore, the vent sealing plate can fit better to seal the ventilation hole. Then, the bolt connecting posts are fitted into the sleeve holes, thereby completing the sealing of the vent sealing plate.
[0014] Furthermore, since the upper and lower base plates are symmetrically fitted with the chassis cover on their front and rear sides, and the front and rear ends of the left and right hanging plates are provided with hanging lugs, two chassis covers can be symmetrically installed on the upper and lower base plates, thus improving the spraying efficiency.
[0015] Furthermore, since the upper base plate and the lower base plate are provided with positioning grooves on the left and right sides, and the left hanging plate and the right hanging plate are respectively constrained in the positioning grooves, the left hanging plate and the right hanging plate can be easily positioned, thereby ensuring better hook-and-loop engagement between the hanging plate lugs and the cover lugs.
[0016] Furthermore, since the sealing plate of the vent sealing plate is provided with an L-shaped bend, and the edges of the left and right sides are also provided with connecting strips, the bend and the connecting strips are in contact and cooperate with each other. The connecting strips and the cover body work together to constrain the front and rear position of the vent sealing plate. Therefore, the vent sealing plate is better squeezed and stuck between the connecting strips and the cover body, thus achieving a better fit and mounting. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0018] Figure 1 This is an exploded view of the structure of an embodiment of the present invention;
[0019] Figure 2 This is a structural schematic diagram of an embodiment of the present invention;
[0020] Figure 3 This is a structural schematic diagram of an embodiment of the present invention with some parts omitted;
[0021] Figure 4 This is a schematic diagram of the structure of the intermediate support in an embodiment of the present invention;
[0022] Figure 5 yes Figure 4 Enlarged view of the structure at point A in the middle;
[0023] In the attached diagram: 1. Cover body; 101. Left side wall; 102. Right side wall; 103. Upper folded edge; 104. Lower folded edge; 105. Ventilation hole; 106. Cover hanging lug; 107. Connecting strip; 108. Bolt connecting column; 109. Sleeve hole; 2. Intermediate support; 21. Upper base plate; 22. Lower base plate; 23. Left hanging plate; 24. Right hanging plate; 25. Hanging hole; 26. Hanging plate lug; 27. Positioning groove; 28. Vertical plate; 29. Vertical reinforcing rib; 210. Hanging groove; 3. Ventilation hole sealing plate; 31. Sealing plate part; 32. Connecting plate part; 33. Bending part. Detailed Implementation
[0024] The present invention will be further described in detail below through specific embodiments.
[0025] like Figure 1-5 As shown, a chassis cover spraying fixture includes a cover body 1, with a left side wall 101 and a right side wall 102 on the left and right sides of the cover body 1. The upper and lower ends of the cover body 1 are respectively provided with an upper folded edge 103 and a lower folded edge 104. The left side wall 101 and the right side wall 102 are provided with a plurality of ventilation holes 105. Cover hanging ears 106 are provided on the vertical sides of the left side wall 101 and the right side wall 102. The spraying fixture includes a central support 2, on which parallel upper base plates 21 are provided. The upper folded edge 103 and the lower folded edge 104 are respectively attached to the upper base plate 21 and the lower base plate 22. The inner sides of the left side wall 101 and the right side wall 102 are fitted with air hole sealing plates 3 for sealing the ventilation holes 105. The left and right sides of the upper base plate 21 and the lower base plate 22 are also provided with left hanging plates 23 and right hanging plates 24. The left hanging plates 23 and right hanging plates 24 are respectively hooked and engaged with the cover hanging ears 106 on the left side wall 101 and the right side wall 102. The upper ends of the left hanging plates 23 and right hanging plates 24 are provided with hanging holes 25.
[0026] In this embodiment, the left hanging plate 23 and the right hanging plate 24 have the same structure and are symmetrically arranged. The left hanging plate 23 is provided with a hanging plate lug 26, and the hanging plate lug 26 and / or the cover lug 106 are provided with a hanging groove 210. The hanging plate lug 26 hooks and cooperates with the corresponding cover lug 106.
[0027] A bolt-connecting post 108 is provided on the inner side of the cover body 1. The vent sealing plate 3 includes a sealing plate portion 31 and a connecting plate portion 32 connected in an L-shape. The sealing plate portion 31 fits against the left side wall 101 or the right side wall 102 to seal the ventilation hole 105. The connecting plate portion 32 is provided with a sleeve hole 109 that fits onto the bolt-connecting post 108. The connecting plate portion 32 fits against the inner side of the cover body 1. The sealing plate portion 31 of the vent sealing plate 3 is provided with an L-shaped bend 33. The edges of the left side wall 101 and the right side wall 102 are also provided with connecting strips 107. The bend 33 contacts and engages with the connecting strips 107. The connecting strips 107 and the cover body 1 work together to constrain the front and rear position of the vent sealing plate 3.
[0028] In this embodiment, positioning grooves 27 are provided on the left and right sides of the upper base plate 21 and the lower base plate 22, and the left hanging plate 23 and the right hanging plate 24 are respectively constrained within the positioning grooves 27. The intermediate support 2 also includes a vertical plate 28 connecting the upper base plate 21 and the lower base plate 22. The vertical plate 28 is provided with vertical reinforcing ribs 29, which are welded to the upper base plate 21 and the lower base plate 22 and inserted and fixed to the vertical plate 28.
[0029] In this embodiment, the front and rear ends of the left mounting plate 23 and the right mounting plate 24 are provided with mounting plate ears 26, and the front and rear sides of the upper base plate 21 and the lower base plate 22 are symmetrically covered with two chassis covers, so that two chassis covers can be sprayed at the same time.
[0030] During assembly, firstly, the vent sealing plate 3 is snapped onto the left side wall 101 and the right side wall 102 to seal the ventilation holes 105. The connecting strip 107 and the cover body 1 work together to constrain the front and rear positions of the vent sealing plate 3. The bolt connecting column 108 is fitted into the sleeve hole 109, allowing the vent sealing plate 3 to fit better and seal the ventilation holes 105. Then, the upper folded edge 103 and the lower folded edge 104 are respectively fastened onto the bottom plate 21 and the lower bottom plate 22, and the chassis cover is supported on the upper bottom plate 21 and the lower bottom plate 22. Next, the left hanging plate 23 and the right hanging plate 24 are installed from the left and right sides. The left hanging plate 23 and the right hanging plate 24 are respectively constrained in the positioning groove 27, which facilitates the positioning of the left hanging plate 23 and the right hanging plate 24, so that they can better cooperate with the cover hanging ear 106. Finally, the hanging hole 25 is hooked onto the hook of the paint spraying conveyor line to paint the outer surface of the chassis cover.
[0031] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications and alterations made to the technical solutions of the present invention without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.
Claims
1. A chassis cover spraying fixture, the chassis cover comprising a cover body, a left side wall and a right side wall provided on the left and right sides of the cover body, an upper folded edge and a lower folded edge respectively provided at the upper and lower ends of the cover body, a plurality of ventilation holes provided on the left side wall and the right side wall, and cover hanging ears provided on the vertical sides of the left side wall and the right side wall, characterized in that: The spraying fixture includes an intermediate support, on which are provided an upper base plate and a lower base plate that are parallel to each other. The upper folded edge and the lower folded edge are respectively fastened to the upper base plate and the lower base plate. The inner sides of the left side wall and the right side wall are fitted with vent sealing plates for sealing ventilation holes. The left and right sides of the upper base plate and the lower base plate are also provided with a left hanging plate and a right hanging plate. The left hanging plate and the right hanging plate are respectively engaged with the cover hooks on the left side wall and the right side wall. The upper end of the left hanging plate and the right hanging plate is provided with a hanging hole.
2. The chassis cover spraying fixture as described in claim 1, characterized in that: The left and right hanging plates have the same structure and are symmetrically arranged. The left hanging plate is provided with a hanging plate lug. The hanging plate lug and / or the cover lug are provided with a hanging groove. The hanging plate lug hooks and engages with the corresponding cover lug.
3. The chassis cover spraying fixture as described in claim 2, characterized in that: The inner side of the housing body is provided with a bolt connection post. The vent sealing plate includes a sealing plate part and a connecting plate part connected in an L-shape. The sealing plate part fits against the left side wall or the right side wall to seal the vent. The connecting plate part is provided with a sleeve hole that fits onto the bolt connection post. The connecting plate part fits against the inner side of the housing body.
4. The chassis cover spraying fixture as described in claim 3, characterized in that: The upper and lower base plates are symmetrically covered by the chassis cover on their front and rear sides, and the front and rear ends of the left and right mounting plates are provided with mounting ears.
5. The chassis cover spraying fixture as described in claim 4, characterized in that: The upper base plate and the lower base plate are provided with positioning grooves on the left and right sides, and the left hanging plate and the right hanging plate are respectively constrained in the positioning grooves.
6. The chassis cover spraying fixture as described in claim 3, characterized in that: The vent sealing plate has an L-shaped bend on its sealing plate portion, and the edges of the left and right side walls are also provided with connecting strips. The bend and the connecting strips are in contact and cooperate with each other. The connecting strips and the cover body cooperate to constrain the front and rear position of the vent sealing plate.
7. The chassis cover spraying fixture as described in claim 1, characterized in that: The intermediate support also includes a vertical plate connecting the upper base plate and the lower base plate. The vertical plate is provided with vertical reinforcing ribs, which are welded to the upper base plate and the lower base plate and fixed by insertion.