Automobile face paint rear door limiting tool
By designing the limiting rod, rotating component, and locking component of the limiting fixture, the problem of the rear door shaking during the painting process was solved, achieving stable fixation of the rear door and improving the painting quality and assembly qualification rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING CORNERSTONE MASCH CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-06-05
AI Technical Summary
In existing technology, the rear door of a car is prone to shaking during the painting process, which affects the quality of the painting work.
A rear door limiting fixture for automotive paint has been designed, including a mounting plate and a limiting mechanism. The rear door is stably fixed by a combination of a limiting rod, a rotating component, and a locking component.
This effectively prevents the rear door from shaking during the painting process, improves the stability of the painting work and the first-time assembly pass rate, and reduces the cost of rework and repair.
Smart Images
Figure CN224321637U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive design and manufacturing technology, and in particular to a tooling for limiting the rear door of an automotive paint finish. Background Technology
[0002] With the rapid development of the automobile manufacturing industry, competition in the automotive market has become increasingly fierce. All automotive companies are facing the challenge of improving quality, and the exterior design of a car is its most attractive feature. At the same time, customers have higher requirements for the matching of interior and exterior dimensions. Current assembly designs cannot fully consider human factors, processes, and quality, making it difficult to guarantee quality. This results in a low first-pass yield rate and a high rate of rework and repair.
[0003] In the prior art, CN217943147U discloses a rear door positioning fixture, including a fixture body, a clamping assembly, a pushing assembly, a clamping device, and a limiting connecting plate. The upper front side of the fixture body is provided with a first Y-axis support block and a first X-axis support block; the lower front side of the fixture body is provided with a second Y-axis support block and a second X-axis support block; the middle front side of the fixture body is provided with a B-pillar main positioning pin; the clamping assembly is fixed to the right side of the fixture body; the pushing assembly is fixed to the mounting plate on the rear side of the fixture body; the clamping device is fixed to the left side of the fixture body; and the limiting connecting plate is fixed to the left side of the fixture body. This utility model's rear door positioning fixture incorporates the concept of human-machine interface design, reducing labor intensity, improving the first-time assembly pass rate and the posture for matching vehicle door dimensions, achieving a repeatability accuracy within 0.3mm, and significantly reducing the cost of rework and repair.
[0004] However, in the aforementioned existing technology, the rear door is prone to shaking during the painting process, which affects the workers' work of spraying the paint on the rear door. Utility Model Content
[0005] The purpose of this utility model is to provide a rear door limiting fixture for automotive topcoat, which solves the problem in the prior art that the rear door is prone to shaking during the painting process, affecting the worker's work of spraying the rear door topcoat.
[0006] To achieve the above objectives, this utility model provides a rear door limiting fixture for automotive paint, including a mounting plate and a limiting mechanism. The limiting mechanism includes an operating frame, a first limiting rod, a limiting block, a connecting assembly, two rotating assemblies, and a locking assembly. The locking assembly is fixedly connected to the operating frame and located above the operating frame. Both rotating assemblies are fixedly connected to the operating frame and located inside the operating frame. The connecting assembly is fixedly connected to the first limiting rod and located at one end of the first limiting rod. The limiting block is fixedly connected to the first limiting rod and located at the other end of the first limiting rod. The first limiting rod is movably connected to the operating frame and located inside the operating frame. The operating frame is fixedly connected to the mounting plate and located on one side of the mounting plate.
[0007] The connecting assembly includes a second limiting rod, a connector, and a connecting cap. The connecting cap is rotatably connected to the connector and is located on one side of the connector. The connector is fixedly connected to the second limiting rod and is located at one end of the second limiting rod. The other end of the second limiting rod is fixedly connected to the first limiting rod and is located at one end of the first limiting rod.
[0008] Each of the rotating components includes a positioning shaft and a rotating cylinder. The rotating cylinder is rotatably connected to the positioning shaft and is located on the periphery of the positioning shaft. The positioning shaft is fixedly connected to the operating frame and is located on the inner side of the operating frame.
[0009] The locking assembly includes a locking cover and two locking rods. The two locking rods are fixedly connected to the locking cover and located below the locking cover. The locking cover is fixedly connected to the operating frame and located above the operating frame.
[0010] The mounting plate includes a main board, fastening bolts, and clips. The clips are fixedly connected to the main board and are located on one side of the main board. The fastening bolts are threadedly connected to the main board and are located on the other side of the main board. The main board is fixedly connected to the locking cover and is located below the locking cover.
[0011] This utility model discloses a rear door limiting fixture for automotive topcoat. The positioning shafts within the two rotating components provide mounting support for the rotating drum. The second limiting rod within the connecting component can move freely under the action of the first limiting rod, thereby adjusting the relative position of the connector and the connecting cap. The connecting cap is fixed to the rear sheet metal of the vehicle, and the mounting plate is then fixed to the rear door. This solves the problem that the rear door is prone to shaking during the painting process, which affects the worker's work of painting the rear door topcoat. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0013] Figure 1 This is a schematic diagram of the overall structure of a rear door limiting fixture for automotive paint according to this utility model.
[0014] Figure 2 This is a top view of a rear door limiting fixture for automotive paint according to this utility model.
[0015] Figure 3 This is a side view of a rear door limiting fixture for automotive paint according to this utility model.
[0016] Figure 4 This is a front view of a rear door limiting fixture for automotive paint according to this utility model.
[0017] Figure 5 This is the utility model Figure 4 A sectional view along line AA.
[0018] 101-Mounting plate, 102-Limiting mechanism, 103-Operating frame, 104-First limit rod, 105-Limiting block, 106-Connecting assembly, 107-Rotating assembly, 108-Locking assembly, 109-Second limit rod, 110-Connector, 111-Connecting cap, 112-Positioning shaft, 113-Rotating cylinder, 114-Locking cover, 115-Locking rod, 116-Main board, 117-Fasting bolt, 118-Snap fastener. Detailed Implementation
[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0020] Please see Figures 1-5 ,in Figure 1 This is a schematic diagram of the overall structure of a rear door limiting fixture for automotive paint according to this utility model. Figure 2 This is a top view of a rear door limiting fixture for automotive paint according to this utility model. Figure 3 This is a side view of a rear door limiting fixture for automotive paint according to this utility model. Figure 4 This is a front view of a rear door limiting fixture for automotive paint according to this utility model. Figure 5 This is the utility model Figure 4 A sectional view along line AA.
[0021] This utility model provides a limiting fixture for the rear door of an automobile topcoat, including a mounting plate 101 and a limiting mechanism 102. The limiting mechanism 102 includes an operating frame 103, a first limiting rod 104, a limiting block 105, a connecting assembly 106, two rotating assemblies 107, and a locking assembly 108. The connecting assembly 106 includes a second limiting rod 109, a connector 110, and a connecting cap 111. Each rotating assembly 107 includes a positioning shaft 112 and a rotating cylinder 113. The locking assembly 108 includes a locking cover 114 and two locking rods 115. The mounting plate 101 includes a main plate 116, fastening bolts 117, and a buckle 118.
[0022] In this specific embodiment, the locking assembly 108 is fixedly connected to the operating frame 103, both rotating assemblies 107 are fixedly connected to the operating frame 103, the connecting assembly 106 is fixedly connected to the first limiting rod 104, the limiting block 105 is fixedly connected to the first limiting rod 104, the first limiting rod 104 is movably connected to the operating frame 103, the operating frame 103 is fixedly connected to the mounting plate 101, the connecting cap 111 is rotatably connected to the connecting head 110, the connecting head 110 is fixedly connected to the second limiting rod 109, the other end of the second limiting rod 109 is fixedly connected to the first limiting rod 104, the rotating drum 113 is rotatably connected to the positioning shaft 112, the positioning shaft 112 is fixedly connected to the operating frame 103, and the two locking rods 108 are fixedly connected to the operating frame 103. All 15 are fixedly connected to the locking cover 114, the locking cover 114 is fixedly connected to the operating frame 103, the buckle 118 is fixedly connected to the main board 116, the fastening bolt 117 is threadedly connected to the main board 116, and the main board 116 is fixedly connected to the locking cover 114. The positioning shaft 112 in the two rotating components 107 provided with installation support for the rotating cylinder 113. The second limiting rod 109 in the connecting component 106 can move freely under the action of the first limiting rod 104, thereby adjusting the relative position of the connector 110 and the connecting cap 111. The connecting cap 111 is fixed to the rear sheet metal of the vehicle, and then the mounting plate 101 is fixed to the rear door, solving the problem that the rear door is prone to shaking during the painting process, which affects the worker's painting work on the rear door.
[0023] The locking assembly 108 is located above the operating frame 103, the two rotating assemblies 107 are located inside the operating frame 103, the connecting assembly 106 is located at one end of the first limiting rod 104, the limiting block 105 is located at the other end of the first limiting rod 104, the first limiting rod 104 is located inside the operating frame 103, the operating frame 103 is located on one side of the mounting plate 101, and the locking cover 114 is directly fixed above the operating frame 103 by the two locking rods 115, which provides protection for the two positioning shafts 112 and the two rotating cylinders 113 inside the operating frame 103, strengthens the structure of the operating frame 103, and also facilitates the operator to better operate the first limiting rod 104 and the second limiting rod 109.
[0024] Secondly, the connecting cap 111 is located on one side of the connecting head 110, the connecting head 110 is located at one end of the second limiting rod 109, the other end of the second limiting rod 109 is located at one end of the first limiting rod 104, the rotating cylinder 113 is located around the positioning shaft 112, the positioning shaft 112 is located inside the operating frame 103, the first limiting rod 104 is pulled, thereby adjusting the position of the second limiting rod 109 and the connecting head 110, rotating the deflection angle of the connecting cap 111, and fixing the connecting cap 111 to the rear sheet metal of the car with screws, simultaneously using the fastening screws. The main board 116 is fixed to the rear door of the car by bolt 117, thereby achieving basic positioning and stability of the rear door and preventing the rear door from rotating during the painting process. The two positioning shafts 112 and the two rotating cylinders 113 are designed to prevent the operator from being rubbed by the inside of the operating frame 103 when adjusting and pulling the first limiting rod 104 and the second limiting rod 109. A square-structured limiting block 105 is provided at the end of the first limiting rod 104 away from the second limiting rod 109, which can prevent the first limiting rod 104 from falling off during the adjustment of the connector 110.
[0025] Meanwhile, both locking rods 115 are located below the locking cover 114, which is located above the operating frame 103. The buckle 118 is located on one side of the main board 116, and the fastening bolt 117 is located on the other side of the main board 116. The main board 116 is located below the locking cover 114. The buckle 118 is fixed to the side of the main board 116 near the connector 110. The structure is a one-way single hook, which makes it convenient for the staff to hold the main board 116 through the buckle 118, thus limiting the rear door of the car.
[0026] In this embodiment, the locking cover 114 is directly fixed above the operating frame 103 by two locking rods 115, providing protection for the two positioning shafts 112 and the two rotating cylinders 113 within the operating frame 103. This strengthens the structure of the operating frame 103 and also facilitates better operation of the first limiting rod 104 and the second limiting rod 109 by the operator. Pulling the first limiting rod 104 adjusts the position of the second limiting rod 109 and the connector 110, rotating the deflection angle of the connecting cap 111, and fixing the connecting cap 111 to the rear sheet metal of the car with screws. Simultaneously, the main board 116 is fixed to the rear door of the car with fastening bolts 117, thereby achieving basic positioning of the rear door of the car. To ensure stability and prevent the rear door of the car from rotating during the painting process, the two positioning shafts 112 and the two rotating cylinders 113 are designed to prevent friction from the inside of the operating frame 103 when the operator adjusts and pulls the first limiting rod 104 and the second limiting rod 109. A square limiting block 105 is provided at the end of the first limiting rod 104 away from the second limiting rod 109 to prevent the first limiting rod 104 from falling off during the adjustment of the connector 110. The buckle 118 is fixed to the side of the main board 116 near the connector 110. The buckle is a one-way hook, which allows the operator to hold the main board 116 and limit the rear door of the car.
[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A rear door limiting fixture for automotive paint, comprising a mounting plate, characterized in that, It also includes a limiting mechanism, which comprises an operating frame, a first limiting rod, a limiting block, a connecting assembly, two rotating assemblies, and a locking assembly. The locking assembly is fixedly connected to the operating frame and located above the operating frame. Both rotating assemblies are fixedly connected to the operating frame and located inside the operating frame. The connecting assembly is fixedly connected to the first limiting rod and located at one end of the first limiting rod. The limiting block is fixedly connected to the first limiting rod and located at the other end of the first limiting rod. The first limiting rod is movably connected to the operating frame and located inside the operating frame. The operating frame is fixedly connected to the mounting plate and located on one side of the mounting plate.
2. The automotive paint rear door limiting fixture as described in claim 1, characterized in that, The connecting assembly includes a second limiting rod, a connector, and a connecting cap. The connecting cap is rotatably connected to the connector and is located on one side of the connector. The connector is fixedly connected to the second limiting rod and is located at one end of the second limiting rod. The other end of the second limiting rod is fixedly connected to the first limiting rod and is located at one end of the first limiting rod.
3. The automotive paint rear door limiting fixture as described in claim 2, characterized in that, Each of the rotating components includes a positioning shaft and a rotating cylinder, the rotating cylinder being rotatably connected to the positioning shaft and located on the periphery of the positioning shaft, and the positioning shaft being fixedly connected to the operating frame and located on the inner side of the operating frame.
4. The automotive paint rear door limiting fixture as described in claim 3, characterized in that, The locking assembly includes a locking cover and two locking rods. Both locking rods are fixedly connected to the locking cover and located below the locking cover. The locking cover is fixedly connected to the operating frame and located above the operating frame.
5. The automotive paint rear door limiting fixture as described in claim 4, characterized in that, The mounting plate includes a main board, fastening bolts, and clips. The clips are fixedly connected to the main board and are located on one side of the main board. The fastening bolts are threadedly connected to the main board and are located on the other side of the main board. The main board is fixedly connected to the locking cover and is located below the locking cover.