Positioning device for vehicle door assembly

Abstract

The utility model discloses a positioning device for assembling a vehicle door. The positioning device comprises a base, a powerful magnet, a positioning block, a spring and two wedge-shaped side pressing blocks, the powerful magnet is fixed at the bottom of the base; the compression screw penetrates through the unthreaded hole in the center of the positioning block from top to bottom and is screwed into the threaded hole in the center of the base; the two wedge-shaped side pressing blocks are connected through the spring and arranged on the left side and the right side of the positioning block and the left side and the right side of the base. A spring is connected between the two wedge-shaped side pressing blocks, and the inclined faces of the two wedge-shaped side pressing blocks are tightly attached to the locating block and the inclined faces on the two sides of the base under the action of elastic tension. The tool has the advantages of being rapid in assembly, accurate in positioning, stable, reliable, easy and convenient to operate and the like, the one-time assembly qualification rate of the vehicle door can be improved, and the phenomenon of later repeated adjustment is avoided. In addition, due to the fact that the cutting edge can be accurately pressed at the center of the sealing strip and the circumferential compression amount of the sealing rubber strip is uniform and consistent, the sealing performance of the vehicle door is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle door assembly, and in particular relates to a positioning device for vehicle door assembly, which is suitable for a vehicle door structure with a sealing strip bonding surface being groove-shaped and a strip pressing surface being edge-shaped. Background Art

[0002] Door assembly is the process of grabbing the door and installing it to the corresponding position of the door frame by the assembly fixture and then fixing it with hinges. According to the form of the positioning device, it can be divided into two types: built-in and external. The built-in type places the positioning device on the inside of the door and uses the door and door frame for positioning; the external type places the positioning device on the outside of the door and uses the positioning holes on the door and the panel for pin positioning. After the door is assembled, whether the existing positioning device is built-in or external, the inspection standard is the appearance gap, that is, whether the gap between the outer contour of the door and the circumference of the panel opening is uniform.

[0003] When using an external positioning device, there must be a positioning hole on the body that is stable in size with the door position, and the positioning accuracy can be improved by pin positioning. In addition to the positioning hole, external positioning has high requirements for the dimensional accuracy and consistency of the door assembly and the enclosure opening. In the actual assembly process, if the matching clearance between the positioning pin and the positioning hole is too large, the positioning is inaccurate. When the assembly quality is subsequently controlled by adjusting the appearance clearance, the positioning pin and the hole are prone to collision, which is not conducive to adjustment; if the matching clearance between the positioning pin and the positioning hole is too small, alignment is prone to difficulty, and continuous fine-tuning is required to achieve alignment between the positioning pin and the positioning hole. When the door is a non-flat part, the door needs to be fine-tuned in 6 degrees of freedom, and the production efficiency is not high.

[0004] When using a built-in positioning device, due to the lack of positioning holes or positioning surfaces, the built-in positioning device cannot be accurately and stably fastened to the door assembly or door frame, and repeated adjustments may be required in the later stage.

[0005] In addition to the above defects, the above two positioning devices are more about ensuring the appearance gap between the door assembly and the enclosure, and cannot ensure that after the car door is closed, the door frame edge is pressed against the center of the sealing strip and the compression amount around the strip is consistent.

[0006] In order to achieve door sealing while reducing the door closing force, existing door sealing strips mostly adopt a hollow structure. When the door is closed, the door closing force required is minimal when the door frame cutting edge is pressed against the center of the sealing strip. However, during the actual installation of the door, due to assembly or parts manufacturing accuracy issues, the door frame often bulges or the cutting edge deviates from the center of the sealing strip, causing the door closing force to increase. If the deviation is serious, it will cause the sealing strip and the door bonding surface to tear apart after the door is closed, affecting the sealing performance of the door. After assembly, the door sealing strip is pressed against the door frame. Due to limited space, it is impossible to observe in real time whether the door frame cutting edge is pressed against the center of the sealing strip, resulting in repeated adjustments later.

[0007] In complex structural products, the assembled door and door frame are often in a curved fit state and the door is installed at a certain angle to the body, so the sealing strip is prone to uneven local compression after the door is assembled. Excessive local compression will cause the door to be inflexible when opened and closed; too little local compression will result in poor sealing performance of the door and partial non-sealing when the door is closed. Utility Model Content

[0008] The utility model provides a positioning device for vehicle door assembly, and the technical problems to be solved are: solving the problems of needing to pre-determine positioning holes and poor positioning stability during vehicle door installation, and also solving the problems of the door frame cutting edge not being easy to press at the center of the sealing strip, the inconsistent compression amount of the rubber strip circumference, and the need for repeated adjustments after installation.

[0009] In order to solve the above technical problems, the utility model provides a positioning device for door assembly, which is characterized in that it includes a base 5, a strong magnet 7, a positioning block 1, a spring 2 and two wedge-shaped side pressure blocks 4; the strong magnet 7 is fixed at the bottom of the base 5; the tightening screw 6 passes through the light hole in the center of the positioning block 1 from top to bottom and is screwed into the threaded hole in the center of the base 5; the two wedge-shaped side pressure blocks 4 are connected by a spring 2, and the two wedge-shaped side pressure blocks are arranged on the left and right sides of the positioning block 1 and the base 5; a spring is connected between the two wedge-shaped side pressure blocks 4, and the inclined surfaces of the two wedge-shaped side pressure blocks are kept in close fit with the inclined surfaces on both sides of the positioning block 1 and the base 5 under the action of elastic tension.

[0010] Beneficial effects: The utility model has the characteristics of rapid assembly, precise positioning, stability and reliability, and easy operation, which can improve the one-time assembly qualification rate of the car door and avoid the phenomenon of repeated adjustment in the later stage. Because the utility model can also ensure that the cutting edge is accurately pressed at the center of the sealing strip and the compression amount of the sealing strip is uniform, the sealing performance of the car door is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the assembly of the utility model with a vehicle door;

[0012] Figure 2 It is a structural schematic diagram of the utility model;

[0013] Figure 3 It is a schematic diagram of the assembly of the positioning device and the door panel;

[0014] Figure 4 It is a schematic diagram of the sealing strip assembly.

[0015] Among them: 1 - positioning block 2 - spring 3 - spring fixing screw; 4 - wedge-shaped side pressure block 5 - base 6 - clamping screw; 7 - strong magnet. DETAILED DESCRIPTION

[0016] In order to make the purpose, content and advantages of the utility model clearer, the specific implementation methods of the utility model are further described in detail below.

[0017] The utility model proposes a positioning device for door assembly, comprising a base 5, a strong magnet 7, a positioning block 1, a spring 2 and two wedge-shaped side pressure blocks 4;

[0018] The strong magnet 7 is a cylindrical part, which is embedded and bonded into the two blind holes at the bottom of the base 5; the clamping screw 6 passes through the light hole in the center of the positioning block 1 and is screwed into the threaded hole in the center of the base 5; the two wedge-shaped side pressure blocks 4 are connected by springs 2, and the two wedge-shaped side pressure blocks are arranged on the left and right sides of the positioning block 1 and the base 5; the inclined surface of the wedge-shaped side pressure block 4 is kept in close contact with the inclined surface of the positioning block 1 and the base 5 under the action of elastic tension. The springs 2 located on both sides of the wedge-shaped side pressure blocks are always in an elastic tension state due to the restrictions of the clamping screws 6, the positioning block 1, and the base 5.

[0019] A positioning boss is provided on the upper end surface of the positioning block 1, and the positioning boss cooperates with the cutting edge of the door frame to realize the positioning of the door panel, ensuring that the center of the cutting edge and the center of the positioning block 1 are in the same plane.

[0020] The positioning device of the utility model is fixed in the bonding surface of the groove-shaped sealing rubber strip, and the distribution mode and quantity are determined by the shape and size of the vehicle door.

[0021] The initial state positioning device has a height of a0 and a width of b0. When in use, the positioning device is placed in the groove of the adhesive sealing strip and is adsorbed and attached to the bottom of the groove by a strong magnet 7. Figure 3 After tightening the clamping screw 6, the wedge-shaped side pressure blocks 4 (2 pieces) are pressed against the two sides of the groove. At this time, the height of the positioning device becomes a1 and the width becomes b1. Figure 4 shown.

[0022] Since the inclined surface angles of the positioning block 1, the base 5, and the wedge-shaped side pressure block 4 are equal (set to 135 for convenience of calculation), 0 ), under the tightening force and guiding action of the clamping screw 6, the height of the positioning device is lowered and the wedge-shaped side pressure blocks 4 (2 pieces) move to both sides. At this time, the wedge-shaped side pressure blocks 4 are subjected to a horizontal force equal to the horizontal displacement relative to the longitudinal center line of the positioning device. When one side of the positioning device first contacts the side wall of the groove, the entire positioning device moves horizontally to the other side under the action of the reaction force until both sides of the wedge-shaped side pressure blocks 4 (2 pieces) are pressed against the side wall of the groove. At this time, the center of the positioning device coincides with the center line of the groove.

[0023] At this time, a0-a1=b1-b0, because a1 is equal to the thickness of the sealing strip after compression obtained by theoretical calculation, and b1 is also equal to the groove width, which is a fixed value. In order to facilitate placement and take-off and reduce the tightening time of the clamping screw 6, b0 can be designed to be slightly smaller than b1. The above analysis can quickly design the overall dimensions of the positioning device. It is only necessary to calculate the distance between the positioning surface of the positioning block 1 and the longitudinal center line of the positioning device in combination with the width of the door frame edge, that is, half the width of the edge, to achieve the centering of the positioning device and the edge when installing the car door, and the adaptive fit of the positioning device and the door frame edge.

[0024] After fixing the door with hinges and fasteners, remove the positioning device, loosen the clamping screw 6 first, and under the pulling force of the spring 2 (2 pieces), the wedge-shaped side pressure block 4 (2 pieces) moves toward the center, the positioning block 1 moves upward, and the clamping force of the wedge-shaped side pressure block 4 on the side wall of the groove disappears and returns to Figure 3 After installing the sealing strip and closing the door, the door frame edge is accurately pressed at the center of the sealing strip and the compression of the sealing strip around the circumference is uniform.

[0025] Working principle: The utility model is suitable for the door structure with the sealing strip bonding surface being groove-shaped and the strip pressing surface being edge-shaped. Before use, the positioning device is fixed to the groove of the adhesive sealing strip. The connection structure diagram is shown in FIG. Figure 1 As shown, the guiding and positioning functions of the positioning device are used to realize the rapid and accurate assembly of the door; after the door is assembled, the positioning device is removed and the sealing strip is bonded to the groove of the groove-shaped sealing strip adhesive part. After the door is installed, it is ensured that the door frame edge can be accurately pressed on the center of the sealing strip and the compression amount of the sealing strip circumference is uniform.

[0026] The utility model has a simple structure and is easy to take and place. Compared with the existing positioning method, the operation steps are greatly simplified. When in use, the installation position and the number of positioning devices used can be adjusted according to the structure and size changes of the parts. During the assembly of the car door, since the three degrees of rotational freedom are achieved through the adaptive fit of the positioning block and the cutting edge, the entire assembly process does not need to be repeatedly adjusted. At the same time, the positioning device is fastened to the bonding surface of the groove-type sealing strip, ensuring the stability and reliability of the assembly result without the need for additional pre-set positioning holes. Because the positioning device can ensure that the cutting edge is accurately pressed on the center of the sealing strip and the compression amount of the sealing strip is uniform and consistent around the circle, the sealing performance of the car door is greatly improved. Furthermore, the utility model has the characteristics of small size, simple structure, low cost, etc., which greatly reduces the processing and manufacturing cycle and saves production costs.

[0027] 1. The utility model is applicable to a vehicle door structure in which the bonding surface of the sealing strip is groove-shaped and the pressing surface of the sealing strip is edge-shaped. Before the vehicle door is installed, the positioning device needs to be fastened in the bonding surface of the groove-shaped sealing strip.

[0028] 2. The positioning device does not require pre-positioning holes, and is quick to operate and has good stability during use.

[0029] 3. The utility model can also ensure that after the vehicle door is installed, the cutting edge of the door frame can be accurately pressed on the center of the sealing strip and the compression amount of the sealing strip circumference is uniform.

[0030] 4. During the alignment and matching process between the door and the door frame, the alignment is achieved through the guiding function of the positioning device, the three degrees of freedom of movement are limited by the positioning block, and the three degrees of freedom of rotation are achieved through the adaptive fit between the positioning block and the cutting edge, thus avoiding repeated adjustments in the later stage. The utility model can also be used for the installation of special-shaped door structural parts.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A positioning device for door assembly, characterized in that: It includes a base, a strong magnet, a positioning block, a spring and two wedge-shaped side pressure blocks; the strong magnet is fixed at the bottom of the base; the clamping screw passes through the light hole in the center of the positioning block from top to bottom and is screwed into the threaded hole in the center of the base; the two wedge-shaped side pressure blocks are connected by a spring, and the two wedge-shaped side pressure blocks are arranged on the left and right sides of the positioning block and the base; a spring is connected between the two wedge-shaped side pressure blocks, and the inclined surfaces of the two wedge-shaped side pressure blocks are kept in close contact with the inclined surfaces on both sides of the positioning block and the base under the action of elastic tension.

2. A positioning device for door assembly according to claim 1, characterized in that: The strong magnet is a cylindrical part.

3. A positioning device for door assembly according to claim 1, characterized in that: Strong magnets are embedded and bonded into two blind holes in the bottom of the base.

4. A positioning device for door assembly according to claim 1, characterized in that: A spring is respectively arranged on both sides of the wedge-shaped side pressure block.

5. A positioning device for door assembly according to claim 1, characterized in that: The spring is always in a state of elastic tension.

6. A positioning device for door assembly according to claim 1, characterized in that: A positioning boss is provided on the upper end surface of the positioning block, and the positioning boss cooperates with the cutting edge of the door frame so that the center of the cutting edge and the center of the positioning block are in the same plane.

7. A positioning device for door assembly according to claim 1, characterized in that: The wedge-shaped side pressure block is fitted with the side surface of the groove of the adhesive sealing strip.

8. A positioning device for door assembly according to claim 1, characterized in that: The inclined surface angles of the positioning block, the base and the wedge-shaped side pressure block are equal.

Images