A mounting clamp for an automobile sunroof

Abstract

The present application relates to the technical field of automobile sunroof mounting, and discloses a mounting clamp for automobile sunroof, which comprises a supporting plate and a mounting plate arranged above the supporting plate, the upper surface of the mounting plate is provided with a sliding groove, the inside of the sliding groove is provided with a clamping seat which is arranged to slide at both ends, a moving seat which moves up and down is arranged between the supporting plate and the mounting plate, symmetrical rotating seats are fixedly arranged at both sides of the top end of the mounting plate, and clamping arms are rotatably arranged in the rotating seats; the linkage components arranged on the side of the mounting plate can drive the clamping seats on both sides to move towards each other for lateral positioning, drive the moving seat to ascend and drive the clamping arms to press down through the four-link mechanism, thereby simplifying the original multi-step independent operation into one-step linkage operation, greatly reducing the clamping time, completely avoiding the workpiece positioning error caused by the asynchronous operation sequence or rhythm of manual operation, and ensuring the consistency of the clamping process and result each time.

Description

Technical Field

[0001] This invention relates to the field of automotive sunroof installation technology, specifically an installation clamp for automotive sunroofs. Background Technology

[0002] In the automotive manufacturing industry, the sunroof assembly is a precision component that needs to be stably, reliably, and without damage fixed to a specific workstation during its assembly, inspection, or subsequent processing. Currently, the common fixing methods in the industry mostly use general-purpose fixtures or special clamping mechanisms designed for a single direction. For example, some fixtures only provide vertical clamping from the top of the workpiece, while lateral positioning requires additional independent mechanisms or manual assistance, resulting in separate operation steps and low efficiency.

[0003] When handling complex contours and demanding multi-directional positioning requirements, such as sunroof assemblies, operators often need to operate multiple independent control components sequentially (e.g., tightening the lateral screws and top clamping rods separately). This step-by-step operation is not only time-consuming and labor-intensive, but more importantly, it is difficult to accurately ensure the synchronicity and coordination of the lateral positioning force and the top clamping force in terms of application time and magnitude. Due to the lack of mandatory mechanical linkage, the workpiece is prone to slight slippage or warping within the fixture due to differences in the order of operation or force, thus affecting the final assembly accuracy and potentially damaging the workpiece surface or internal structure due to uneven force. In addition, the top surface of the sunroof assembly often has a certain curvature or local features, making it difficult for ordinary rigid clamping heads to ensure uniform contact across the entire area, posing a risk of damaging high points or failing to clamp low points. Furthermore, existing fixtures typically rely on thread friction for self-locking after clamping, which may lead to loosening under long-term vibration or workpiece reaction forces, and their stability needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide an installation fixture for automotive sunroofs, which achieves efficient linkage operation and improves assembly efficiency.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an installation clamp for an automotive sunroof, comprising a support plate and an installation plate disposed above it, wherein the upper surface of the installation plate is provided with a sliding groove, and clamping seats are slidably disposed at both ends of the sliding groove, a movable seat that moves up and down is provided between the support plate and the installation plate, symmetrical rotating seats are fixedly disposed on both sides of the top of the installation plate, a clamping arm is rotatably disposed inside the rotating seat, a connecting arm is hinged between the bottom of the clamping arm and the side of the movable seat, a clamping plate is ball-jointed at the top of the connecting arm, a second rubber pad is provided below the clamping plate, a plurality of supporting springs are installed between the second rubber pad and the clamping plate, and a linkage component is provided on the side of the installation plate to drive the clamping seats and clamping arms to move synchronously.

[0006] A further configuration of the present invention is as follows: the linkage component includes an adjusting screw one and an adjusting screw two. The adjusting screw one is rotatably mounted inside the slide groove. A transmission gear one is fixedly mounted at one end of the adjusting screw one. The adjusting screw two is rotatably mounted between the support plate and the mounting plate. A worm gear is fixedly mounted at the top of the adjusting screw two. Two symmetrical mounting seats are fixedly mounted at the bottom end of the mounting plate. A worm is rotatably mounted between the two mounting seats. The worm is meshed with the worm gear. A transmission gear two is fixedly mounted at one end of the worm. A mounting shaft is rotatably mounted on one side of the mounting plate. A transmission gear three is fixedly mounted at the end of the mounting shaft. The transmission gear three is meshed with transmission gear one and transmission gear two.

[0007] A further feature of the present invention is that the threaded grooves at both ends of the adjusting screw are in opposite directions, and one end of the adjusting screw passes through the slide groove and is placed on the outside and is equipped with a knob. The bottom end of the clamp is fixedly provided with a slider that is slidably connected to the slide groove. The slider is threadedly connected to the adjusting screw. The opposing surfaces of the two clamps are provided with rubber pads.

[0008] A further feature of the present invention is that the four corners of the support plate are fixedly connected to the four corners of the mounting plate by mounting rods, two symmetrical guide rods are fixedly provided at the top of the support plate, and the guide rods are slidably connected to the movable seat, and the middle part of the movable seat is threadedly connected to the adjusting screw.

[0009] A further configuration of the present invention is as follows: a hinge seat one is fixedly provided on the side of the movable seat, the hinge seat one is rotatably connected to one end of the connecting arm, and a hinge seat two is fixedly provided at the bottom of the clamping arm, the hinge seat two is rotatably connected to the other end of the connecting arm.

[0010] A further configuration of the present invention is as follows: a ball seat is fixedly provided at the top of the clamping arm, a spherical recess is provided at the bottom of the ball seat, and a ball head that mates with the ball seat is fixedly provided at the top of the clamping plate, the ball head being installed inside the spherical recess.

[0011] A further feature of the present invention is that an L-shaped support is installed on the side of the support plate, the vertical section of the support has a waist-shaped hole, a fixing bolt passing through the waist-shaped hole is fixed on the side of the support plate, and the horizontal section of the support has a mounting hole.

[0012] In summary, the present invention has the following beneficial effects: 1. By using a linkage component set on the side of the mounting plate, the lateral clamping drive (adjusting screw one) and the top pressing drive (adjusting screw two and worm gear pair) are mechanically coupled through a gear linkage group consisting of transmission gear one, transmission gear three and transmission gear two. The operator only needs to turn a knob to synchronously drive the clamping seats on both sides to move towards each other for lateral positioning, and drive the moving seat to rise and drive the clamping arm to press down through the linkage mechanism. This simplifies the original multi-step independent operation into a one-step linkage operation, greatly reducing clamping time and completely avoiding workpiece positioning errors caused by asynchronous manual operation sequence or rhythm, ensuring the consistency of each clamping process and result. 2. In the top clamping mechanism, the clamping plate is installed at the end of the clamping arm through a ball joint connection between the ball head and the ball seat, which enables the clamping plate to have multi-degree-of-freedom adjustment capability. In addition, the multiple support springs set between the clamping plate and the second rubber pad form an elastic pressing system. When the clamping arm is pressed down, under the combined action of the ball joint and the elastic system, the second rubber pad can adaptively conform to the curved or uneven surface that may exist on the top of the sunroof, achieving uniform pressing of the surface contact, effectively avoiding indentations or deformation caused by excessive local stress. At the same time, the first rubber pad on the side clamp and the second rubber pad on the top work together to provide sufficient friction while forming a flexible protection for the workpiece surface. 3. The power chain driving the top clamping action includes a worm gear pair consisting of a worm and a worm wheel. This mechanism has a reverse self-locking characteristic, that is, when the top clamping force acts on the clamping arm, its reverse force cannot drive the worm gear to reverse. Once the knob is stopped, the clamping state is locked by the mechanical structure. No additional locking device is needed, which can prevent the clamping force from weakening or loosening under the vibration or external force interference of the assembly operation. This greatly enhances the stability and safety of the fixture during continuous operation and provides a guarantee for high-precision assembly. Attached Figure Description

[0013] Figure 1 This is one of the three-dimensional structural schematic diagrams of the present invention; Figure 2 This is the second three-dimensional structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the small frame of the present invention after disassembly; Figure 4 This is a schematic diagram of the small frame structure of the present invention; Figure 5 This is the second three-dimensional structural schematic diagram of the present invention; Figure 6 This is a schematic diagram of the structure of the small frame of the present invention after disassembly; Figure 7 This is a schematic diagram of the small frame structure of the present invention.

[0014] In the diagram: 1. Support plate; 101. Fixing bolt; 102. Support; 2. Mounting rod; 3. Mounting plate; 301. Slide groove; 302. Adjusting screw one; 303. Sliding block; 304. Clamp; 305. Rubber pad one; 306. Transmission gear one; 4. Adjusting screw two; 401. Worm gear; 5. Mounting seat; 501. Worm; 502. Transmission gear two; 6. Transmission gear three; 601. Mounting shaft; 7. Moving seat; 701. Guide rod; 702. Hinge seat one; 8. Clamping arm; 801. Hinge seat two; 802. Ball seat; 803. Clamping plate; 804. Ball head; 805. Support spring; 806. Rubber pad two; 9. Connecting arm. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0016] Please see Figures 1-7 In this embodiment of the invention, an installation fixture for an automotive sunroof includes a horizontally arranged rectangular support plate 1, which serves as the basic load-bearing structure of the entire fixture. Four mounting rods 2 are vertically and fixedly connected to the four corners of the support plate 1, and the tops of the mounting rods 2 are jointly and fixedly connected to a horizontal mounting plate 3. The mounting plate 3 is parallel to the support plate 1 and is maintained at a fixed distance by the mounting rods 2, forming a stable frame structure. An L-shaped support 102 is installed on the side of the support plate 1 by fixing bolts 101. The vertical section of the support 102 has an oblong hole, through which the fixing bolts 101 pass to lock the support 102 at different height positions on the side of the support plate 1, thereby achieving fine adjustment of the installation height of the entire fixture. The horizontal section of the support 102 has an installation hole for fixing the entire fixture to a workbench or external frame by bolts.

[0017] The upper surface of the mounting plate 3 has a through groove 301 along its length. A clamping seat 304 is slidably disposed at both ends of the groove 301. Specifically, a slider 303 is fixedly connected to the bottom end of each clamping seat 304. The shape of the slider 303 matches the groove 301, allowing it to slide smoothly along the groove 301 while preventing the clamping seat 304 from detaching from above. Rubber pads 305 are adhered to the opposing inner surfaces of the two clamping seats 304 to provide cushioning and protection when clamping the side of the skylight, preventing scratches on the workpiece. To drive the two clamping seats 304 synchronously... The sliding mechanism moves in opposite directions. An adjusting screw 302 is rotatably installed in the slide groove 301. The threads at both ends of the adjusting screw 302 turn in opposite directions, forming threaded engagements with the threaded holes inside the two sliders 303. When the adjusting screw 302 rotates, the two sliders 303 drive the clamp 304 to move synchronously in opposite directions along the slide groove 301. One end of the adjusting screw 302 extends to the side of the mounting plate 3, and a knob (not labeled in the figure) and a transmission gear 306 are fixedly installed at this end. The operator can manually drive the adjusting screw 302 to rotate by turning the knob.

[0018] Within the space between the support plate 1 and the mounting plate 3, a movable seat 7 is provided that can move up and down. Two symmetrical guide rods 701 are vertically and fixedly connected to the top of the support plate 1. The guide rods 701 pass through the corresponding guide holes on the movable seat 7 and form a sliding fit with the movable seat 7, providing precise guidance for the lifting and lowering movement of the movable seat 7 and preventing it from rotating or swaying. A threaded hole is opened in the center of the movable seat 7. An adjusting screw 4 is vertically and rotatably installed between the support plate 1 and the mounting plate 3 through a bearing. Its upper part passes through the threaded hole of the movable seat 7 and forms a threaded fit with it. When the adjusting screw 4 rotates, it drives the movable seat 7 to move up and down along the guide rods 701. A worm gear 401 is fixedly installed on the top of the adjusting screw 4.

[0019] Two symmetrical mounting seats 5 are fixedly installed at the bottom of the mounting plate 3. A worm gear 501 is horizontally mounted between the two mounting seats 5 via a bearing. The axis of the worm gear 501 is spatially perpendicular to the axis of the adjusting screw 4, and the worm gear 501 meshes with the worm wheel 401 to form a worm gear reduction mechanism with a self-locking function. A transmission gear 502 is fixedly installed at one end of the worm gear 501.

[0020] To achieve synchronous drive under a single operation input, a mounting shaft 601 is rotatably mounted on the side of the mounting plate 3. A transmission gear 6 is fixedly mounted at the end of the mounting shaft 601. The transmission gear 6 meshes with the transmission gear 306 at the end of the adjusting screw 302 and the transmission gear 502 at the end of the worm 501, forming a gear linkage group.

[0021] On both sides (both sides along the length) of the top of the mounting plate 3, multiple evenly spaced rotating seats (not shown separately in the figure) are fixedly installed; each rotating seat has a clamping arm 8 rotatably mounted on a rotating shaft, and the clamping arm 8 can swing back and forth in a vertical plane around the rotating shaft; the bottom of the clamping arm 8 is fixedly provided with a second hinge seat 801, and the side of the movable seat 7 is fixedly provided with a first hinge seat 702. A connecting arm 9 is hinged between the first hinge seat 702 and the second hinge seat 801; specifically, the two ends of the connecting arm 9 are rotatably connected to the first hinge seat 702 and the second hinge seat 801 respectively through pins, thereby forming a linkage mechanism; when the movable seat 7 moves up and down, the bottom of the clamping arm 8 can be driven to move back and forth by pushing and pulling the connecting arm 9, thereby causing the top of the clamping arm 8 to swing down (perform clamping) or lift up (release) around its rotating shaft.

[0022] A ball seat 802 is fixedly installed on the top of the clamping arm 8. The bottom of the ball seat 802 is machined with a spherical recess. A ball head 804 matching the spherical recess is fixedly installed on the top of a clamping plate 803. The ball head 804 is embedded in the spherical recess, so that the clamping plate 803 and the clamping arm 8 are connected by a ball joint through the cooperation of the ball head 804 and the ball seat 802. A rubber pad 806 is provided below the clamping plate 803 for direct contact and pressing the top surface of the sunroof. Between the rubber pad 806 and the clamping plate 803, a plurality of support springs 805 are installed in a matrix arrangement. The two ends of the support springs 805 abut against the clamping plate 803 and the rubber pad 806 respectively, providing a continuous elastic preload to the rubber pad 806.

[0023] In use, in the initial state, the two clamps 304 are located at both ends of the slide 301, and the clamping arm 8 is in the open position with the arms raised upward, leaving enough space for the workpiece to be placed; the car sunroof assembly to be installed or inspected is placed horizontally on the upper surface of the mounting plate 3, so that it is located between the two clamps 304, and the top area of ​​the sunroof assembly is ensured to be below the two clamps 803. The operator rotates the manual knob at the end of the adjusting screw 302 clockwise. The rotation of the knob directly drives the adjusting screw 302 to rotate. Since the transmission gear 306 is fixedly mounted on the shaft end of the adjusting screw 302, it rotates synchronously. The rotation of the transmission gear 306 drives the transmission gear 6, which meshes directly with it, to rotate. The transmission gear 6 is fixed to the mounting shaft 601, thus driving the mounting shaft 601 to rotate. The transmission gear 6 on the mounting shaft 601 then transmits the rotational motion to the other meshing transmission gear 502. The transmission gear 502 is fixedly connected to the worm gear 501, thus the worm gear 501 opens... The rotation begins; at this point, through the gear linkage group consisting of transmission gear 1 306, transmission gear 3 6 and transmission gear 2 502, the single rotation input is distributed into two synchronous outputs; driven by the rotation of the adjusting screw 1 302 itself, the rotational motion is converted into the linear motion of the two sliders 303 by the cooperation of the external threads of the two ends of the screw with opposite directions with the internal threads of the two sliders 303. The two sliders 303 slide synchronously and towards each other along the guide rail in the slide groove 301, driving the clamp 304 and its rubber pad 1 305 fixed above the sliders 303 to move towards the center until they gently contact and firmly clamp the sides of the sunroof assembly from the left and right sides, completing the precise lateral positioning; The rotating worm 501 drives the meshing worm wheel 401 to rotate. The worm wheel 401 is fixed to the vertically arranged adjusting screw 4, thereby driving the adjusting screw 4 to rotate. The rotation of the adjusting screw 4 drives the moving seat 7, which is threadedly engaged with it, to move smoothly upward along the two guide rods 701. When the moving seat 7 rises, the hinge seat 702 fixed to its side rises accordingly. The hinge seat 702 pushes the hinge seat 801 at the bottom of the clamping arm 8 through the connecting arm 9, forcing the bottom of the clamping arm 8 to swing forward around its hinge point with the rotating seat. The forward swing of the bottom of the clamping arm 8, through its lever action, causes the top of the clamping arm 8 to... (One end of the ball seat 802) swings downward in an arc. The ball seat 802, which moves downward, is connected to the ball joint of the ball head 804, and transmits the downward pressure to the clamp plate 803. The clamp plate 803 first compresses the multiple support springs 805 below it. The spring force is evenly transmitted to the top surface of the sunroof assembly through the second rubber pad 806. The ball joint connection allows the clamp plate 803 to be finely adjusted at multiple angles within the elastic range of the support springs 805, ensuring that the second rubber pad 806 can achieve full-area contact and uniform pressing under the combined action of its own elasticity and the support springs 805, regardless of whether the top surface of the sunroof is flat or curved. When the clamping force reaches the required level, stop turning the manual knob. At this time, because the worm gear pair formed by the worm 501 and the worm wheel 401 has a reverse self-locking characteristic, any reverse driving force caused by the reaction force of the workpiece or external vibration and transmitted from the clamping arm 8 to the worm wheel 401 through the adjusting screw 4 cannot drive the worm 501 to rotate. Therefore, the top clamping state is reliably locked by the mechanical structure without the need for additional operation. When it is necessary to remove the workpiece, the operator turns the manual knob counterclockwise; the above process is reversed: the reverse rotation of the adjusting screw 302 causes the two clamps 304 to retract outwards synchronously; at the same time, the power is transmitted through the gear linkage and worm gear pair, causing the adjusting screw 4 to rotate in the opposite direction, driving the moving seat 7 to descend along the guide rod 701, and then pulling the bottom of the clamping arm 8 to retract through the connecting arm 9, the top of the clamping arm 8 is raised, the clamping plate 803 and the rubber pad 806 are removed from the workpiece surface, and the workpiece can be safely removed.

[0024] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. A mounting clamp for an automotive sunroof, comprising a support plate (1) and a mounting plate (3) disposed thereon, characterized in that, The upper surface of the mounting plate (3) is provided with a sliding groove (301). The sliding groove (301) is provided with a clamping seat (304) at both ends. A movable seat (7) that moves up and down is provided between the support plate (1) and the mounting plate (3). Symmetrical rotating seats are fixed on both sides of the top of the mounting plate (3). A clamping arm (8) is provided inside the rotating seat. A connecting arm (9) is hinged between the bottom of the clamping arm (8) and the side of the movable seat (7). A clamping plate (803) is ball-jointed at the top of the connecting arm (9). A rubber pad (806) is provided below the clamping plate (803). Multiple support springs (805) are installed between the rubber pad (806) and the clamping plate (803). A linkage component is provided on the side of the mounting plate (3) to drive the clamping seat (304) and the clamping arm (8) to move synchronously.

2. The mounting fixture for an automotive sunroof according to claim 1, characterized in that: The linkage component includes an adjusting screw one (302) and an adjusting screw two (4). The adjusting screw one (302) is rotatably mounted inside the slide groove (301). One end of the adjusting screw one (302) is fixedly provided with a transmission gear one (306). The adjusting screw two (4) is rotatably mounted between the support plate (1) and the mounting plate (3). The top of the adjusting screw two (4) is fixedly mounted with a worm gear (401). The bottom end of the mounting plate (3) is fixedly provided with two symmetrical mounting... A worm gear (501) is rotatably mounted between two mounting seats (5). The worm gear (501) is meshed with a worm wheel (401). A transmission gear two (502) is fixedly provided at one end of the worm gear (501). A mounting shaft (601) is rotatably provided on one side of the mounting plate (3). A transmission gear three (6) is fixedly provided at the end of the mounting shaft (601). The transmission gear three (6) is meshed with transmission gear one (306) and transmission gear two (502).

3. The mounting fixture for an automotive sunroof according to claim 2, characterized in that: The threaded grooves at both ends of the adjusting screw (302) are opposite in direction, and one end of the screw passes through the slide groove (301) and is placed on the outside and is equipped with a knob. The bottom end of the clamp (304) is fixedly provided with a slider (303) that is slidably connected to the slide groove (301). The slider (303) is threadedly connected to the adjusting screw (302). The opposite surfaces of the two clamps (304) are provided with rubber pads (305).

4. The mounting fixture for an automotive sunroof according to claim 2, characterized in that: The four corners of the support plate (1) are fixedly connected to the four corners of the mounting plate (3) by the mounting rod (2). Two symmetrical guide rods (701) are fixedly provided at the top of the support plate (1), and the guide rods (701) are slidably connected to the movable seat (7). The middle part of the movable seat (7) is threadedly connected to the adjusting screw (4).

5. The mounting fixture for an automotive sunroof according to claim 1, characterized in that: The movable seat (7) is fixedly provided with a hinge seat one (702) on its side. The hinge seat one (702) is rotatably connected to one end of the connecting arm (9). The clamping arm (8) is fixedly provided with a hinge seat two (801) at its bottom. The hinge seat two (801) is rotatably connected to the other end of the connecting arm (9).

6. The mounting fixture for an automotive sunroof according to claim 1, characterized in that: The top of the clamping arm (8) is fixedly provided with a ball seat (802), the bottom of the ball seat (802) is provided with a spherical recess, and the top of the clamping plate (803) is fixedly provided with a ball head (804) that cooperates with the ball seat (802), and the ball head (804) is installed inside the spherical recess.

7. The mounting fixture for an automotive sunroof according to claim 1, characterized in that: The side of the support plate (1) is equipped with an L-shaped support (102). The vertical section of the support (102) is provided with a waist-shaped hole. The side of the support plate (1) is fixed with a fixing bolt (101) that passes through the waist-shaped hole. The horizontal section of the support (102) is provided with an installation hole.

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