Vehicle door hinge mounting device

Abstract

The utility model provides a car door hinge mounting device, a clamping mechanism for limiting the displacement of a hinge is arranged on a rack, the rack is fixedly connected with a torque wrench through a fixing mechanism, and the torque wrench is used for mounting a bolt hole of a hinge bolt, and the rod end of the bolt is opposite to and close to the hinge. The hinge and the torque wrench are limited through the clamping mechanism and the fixing mechanism respectively, so that the torque wrench is matched with the hinge in position and posture, the problems of distortion, thread loosening and the like of the hinge are solved, the mounting efficiency is improved, and the labor cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts installation tooling, in particular to a door hinge installation device. Background Art

[0002] In the welding process workshop, automobile hinges are often used in car doors, engine covers, tailgate covers, fuel tank covers and other parts. For example, the four-door hinge connects the car door to the car body and can maintain the accurate position of the car door relative to the car body. Figure 1 As shown, the hinge A of the door includes a hinge plate A1 and a cylindrical hinge pin seat A2 with a hinge pin A3 inserted therein. When installing the hinge A, a bolt needs to be used to connect the door to the hinge A through a bolt hole A11 in the middle of the hinge plate A1. At present, car companies generally use a torque wrench to directly install the hinge A on the door, without a fixed auxiliary tool to position the hinge A and the torque wrench at the same time, which makes it easy for the hinge bolt to twist and slip during installation, resulting in a waste of parts and increased labor costs.

[0003] The patent entitled "A Hinge Assembly Positioning and Installation Tool" (CN110142702A) discloses a technical solution, including a mounting plate, a limit device, a fixing block and a limit piece, which can coaxially clamp the door hinges. However, the limit device needs to be manually operated to complete the clamping of a single hinge, which is inefficient and does not involve the coordination problem with the torque wrench.

[0004] The patent entitled "A vehicle door hinge assembly device" (CN215509879U) discloses a technical solution, including a tooling base, a support base, a clamping mechanism and a hinge positioning device, and discloses a clamping solution for vehicle door weldments and hinges to be assembled; the above technical solution can replace the solution of positioning and assembling vehicle doors and hinges through manual operation, but still requires manual operation of the torque wrench, and cannot properly solve the problem of installation slippage caused by manually operating the wrench.

[0005] The technical solution disclosed in the patent entitled "A tool for automatically installing a car body hinge" (CN209902616U) includes a hinge positioning frame and an automatic tightening mechanism for hinge screws. The above solution requires the establishment of a precise detection and identification system to cooperate with the feeding mechanism in the automatic tightening system. The layout scheme is relatively complex and has a high degree of automation, but the equipment cost and maintenance cost are also relatively high. Utility Model Content

[0006] The utility model aims to provide a door hinge installation device, which realizes accurate installation of hinge bolts through positioning cooperation between the hinge and the torque wrench.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A door hinge installation device comprises a frame, on which a clamping mechanism for limiting hinge displacement is arranged, and the frame is fixedly connected to a torque wrench through a fixing mechanism, and a rod end of the torque wrench adjacent to a bolt hole of the hinge is used for installing a hinge bolt, and the rod end of the torque wrench for installing the hinge bolt faces the bolt hole.

[0009] The utility model mainly limits the position of the hinge by means of a clamping mechanism, and securely connects the torque wrench to the frame by means of a fixing mechanism, so that the position and posture of the torque wrench are matched with the hinge, thereby solving the problems of hinge distortion and slipping caused by inaccurate matching between the torque wrench and the hinge, improving installation efficiency and saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is an isometric view of the hinge;

[0011] Figure 2 Isometric view of the mounting device for the door hinges;

[0012] Figure 3 A side view of the device for mounting the door hinge;

[0013] Figure 4 Diagram of removing the torque wrench for the door hinge mounting assembly;

[0014] Figure 5 for Figure 4 A partial enlarged view of

[0015] Figure 6 Schematic diagram of the radial limiting mechanism.

[0016] In the figure: 1-frame; A-hinge; A1-hinge plate; A2-hinge pin seat; A3-hinge pin; A11-bolt hole; A21-arc-shaped protrusion; 10-clamping mechanism; 11-support block; 12-pressing block; 20-torque wrench; 21-fixing mechanism; 22-fixing sleeve; 30-radial limiting mechanism; 31-first stopper; 32-second stopper; 33-pressing block; 121-connecting rod; 122-cylinder; 12A-pressing position; 12B-releasing position. DETAILED DESCRIPTION

[0017] First of all, it should be noted that Figure 2-4 The two sets of pressing blocks 12 and connecting rods 121 are for showing that the pressing block 12 is in two states, namely, the pressing position 12A and the releasing position 12B. In the present device, there is only one pressing block 12 and connecting rod 121.

[0018] Example 1

[0019] See also Figure 1-6The door hinge installation device shown includes a frame 1, on which a clamping mechanism 10 for limiting the displacement of the hinge A is arranged. The frame 1 is fixedly connected to a torque wrench 20 through a fixing mechanism 21. The rod end of the torque wrench 20 adjacent to the bolt hole A11 of the hinge A is used to install the hinge bolt, and the rod end of the torque wrench 20 for installing the hinge bolt is opposite to the bolt hole A11.

[0020] In the above scheme, the clamping mechanism 10 limits the hinge A so that it can only rotate along itself but cannot move. When the hinge A is installed, the hinge installation position of the door to be assembled is placed against the surface of the hinge plate A1, thereby limiting the rotation of the hinge A. At this time, the position and posture of the hinge A are completely limited, and the hinge bolt is tightened in cooperation with the torque wrench 20 fixed on the frame 1. In addition, the position and posture of the torque wrench 20 are also completely fixed by the fixing mechanism 21 on the frame 1. The operator does not need to control the position of the torque wrench 20 and the hinge A. The torque wrench 20 is used to fix the relative position of the rod end of the hinge bolt and the bolt hole A11, which improves the installation efficiency and avoids the problem of hinge bolt slipping. It should be noted that this device can not only install door hinges, but also body hinges. When installing, the installation position of the body to be assembled can be placed against the surface of the hinge plate A1.

[0021] As a preferred design scheme of the clamping mechanism 10, the clamping mechanism 10 includes a support block 11 on which the hinge A is placed and a clamping block 12 arranged opposite to the support block 11, the hinge A is located between the support block 11 and the clamping block 12, the support block 11 abuts against the bottom surface of the hinge pin seat A2 and the hinge pin A3 is inserted into the through hole of the support block 11, and the clamping block 12 moves closer to or away from the support block 11 to clamp or release the limit on the hinge pin seat A2.

[0022] In the above scheme, the hinge pin A3 is usually inserted vertically in the through hole of the support block 11, so that the hinge pin A3 is limited in the horizontal plane. The bottom surface and the top surface of the hinge pin seat A2 are respectively abutted by the support block 11 and the pressing block 12, and the hinge A is limited in the vertical direction. When the pressing block 12 approaches the support block 11 to press the hinge pin seat A2, the hinge bolt can be installed; when the pressing block 12 is away from the support block 11 and the limit is released, the next hinge A to be installed can be replaced.

[0023] Example 2

[0024] On the basis of the existing embodiment 1, the circumference of the hinge pin seat A2 is provided with an arc-shaped protrusion A21 extending radially, and the frame 1 is provided with a radial limiting mechanism 30 for limiting the rotation of the hinge pin seat A2, and the radial limiting mechanism 30 includes a first stopper 31 and a second stopper 32, and the first stopper 31 and the second stopper 32 are respectively abutted against the two side surfaces of the arc-shaped protrusion A21 perpendicular to its extension direction. In the above scheme, the first stopper 31 and the second stopper 32 clamp the arc-shaped protrusion A21 on the hinge pin seat A2 in the middle, limiting the rotation of the hinge pin seat A2, that is, the position and posture of the hinge A are completely fixed before being matched with the door installation position. Since the door is heavy, after the posture of the hinge A is determined, the hinge plate A1 can be more conveniently installed with the door than in embodiment 1.

[0025] In order to facilitate the hinge installation device to adapt to the hinge A, such as Figure 5-6 As shown, the cross-section of the first stopper 31 along the extension direction of the arc-shaped protrusion A21 is L-shaped, including a vertical block 311 and a horizontal block 312, which form an angle block. The horizontal block 312 is sandwiched between the pressure block 33 and the support block 11 on the frame 1, and the vertical block 311 is in contact with the arc-shaped protrusion A21.

[0026] In the above scheme, before placing the hinge A for the first time, the first stopper 31 is first taken out, and the hinge pin A3 is inserted into the through hole of the support block 11 before installing the first stopper 31, so that the arc-shaped protrusion A21 of the hinge pin seat A2 is pressed by the first stopper 31 and the second stopper 32 respectively in front and back, and finally the pressing block 33 is pressed, and the first stopper 31 is detachably fixed on the frame 1 to complete the adaptation. After the first hinge A is assembled, there is no need to adjust the position of the first stopper 31 again, and the next hinge A can be directly and quickly replaced. This scheme can flexibly adjust the tightness of the radial limit mechanism 30 clamping the arc-shaped protrusion A21, and can adapt to hinges A of different specifications, which is easy to use and low in cost.

[0027] Preferably, the clamping block 12 is fixed to one end of the connecting rod 121, and the other end of the connecting rod 121 swings through the extension and contraction of the piston rod of the cylinder 122, driving the clamping block 12 to be in the clamping position 12A or the release position 12B respectively. The cross section of the clamping block 12 perpendicular to the pressing surface is in the shape of an "I" character, and the "I"-shaped notch is directly opposite to the pin cap of the hinge pin A3. The clamping block 12 in the clamping position 12A is pressed against the hinge pin seat A2 and the arc-shaped protrusion A21 on both sides of the pin cap of the hinge pin A3. The clamping block 12 is in the shape of a T-shaped rod, and its web rod 12a is connected to the rod section of the free end of the connecting rod 121, and its wing rod 12b is close to the rod end end face of the support block 11 as the pressing surface. In the above scheme, due to the presence of the pin cap of the hinge pin A3, the top of the hinge pin seat A2 is not flat. Through the "I"-shaped design of the clamping block 12, the abutting surface of the clamping block 12 avoids the raised position where the pin cap is located, thereby achieving stable clamping of the hinge A.

[0028] As a preferred solution, the fixing mechanism 21 includes a fixing sleeve 22 fixedly connected to the frame 1, the fixing sleeve 22 is arranged adjacent to the bolt hole A11 of the hinge A and the cores of the two holes are arranged coaxially, and the torque wrench 20 is used to install the shaft of the hinge bolt and the through hole of the fixing sleeve 22 with interference fit. In the above solution, the torque wrench 20 is usually a pneumatic wrench, and the rod end of its mounting bolt will produce a high frequency of vibration during operation, which is one of the main reasons for bolt slippage. The fixing mechanism 21 is designed so that the fixing sleeve 22 is fixedly connected to the frame 1, and is sleeved at the position of the torque wrench 20 near the rod end, that is, the position most prone to vibration, so that the angle of the mounting bolt at the rod end of the torque wrench 20 can be fixed, and its vibration can be effectively suppressed, which greatly improves the qualified rate of hinge bolt installation.

Claims

1. A door hinge mounting device, comprising a frame (1), characterized in that: The frame (1) is provided with a clamping mechanism (10) for limiting the displacement of the hinge (A); the frame (1) is fixedly connected to a torque wrench (20) via a fixing mechanism (21); the rod end of the torque wrench (20) adjacent to the bolt hole (A11) of the hinge (A) is used for installing the hinge bolt, and the rod end of the torque wrench (20) for installing the hinge bolt faces the bolt hole (A11).

2. The door hinge installation device according to claim 1, characterized in that: The clamping mechanism (10) comprises a support block (11) on which a hinge (A) is placed, and a pressing block (12) arranged opposite to the support block (11); the hinge (A) is located between the support block (11) and the pressing block (12); the support block (11) abuts against the bottom surface of the hinge pin seat (A2) and the hinge pin (A3) is inserted into a through hole of the support block (11); the pressing block (12) moves closer to or farther from the support block (11) to press or release the limit on the hinge pin seat (A2).

3. The door hinge installation device according to claim 2, characterized in that: An arc-shaped protrusion (A21) is radially extended on the peripheral surface of the hinge pin seat (A2), and a radial limiting mechanism (30) for limiting the rotation of the hinge pin seat (A2) is arranged on the frame (1). The radial limiting mechanism (30) comprises a first stopper (31) and a second stopper (32), and the first stopper (31) and the second stopper (32) are respectively abutted against two side surfaces of the arc-shaped protrusion (A21) which are perpendicular to the extension direction thereof.

4. The door hinge installation device according to claim 3, characterized in that: The cross section of the first stopper (31) along the extension direction of the arc-shaped protrusion (A21) is L-shaped. The first stopper (31) comprises a vertical block (311) and a horizontal block (312), which together form an angle block. The horizontal block (312) is sandwiched between a pressing block (33) and a supporting block (11) on the frame (1), and the vertical block (311) is in contact with the arc-shaped protrusion (A21).

5. The door hinge installation device according to claim 2, characterized in that: The clamping block (12) is fixed to one end of a connecting rod (121), and the other end of the connecting rod (121) swings through the extension and retraction of a piston rod of a cylinder (122), driving the clamping block (12) to be in a clamping position (12A) or a releasing position (12B).

6. The door hinge installation device according to claim 2 or 5, characterized in that: The cross section of the pressing block (12) perpendicular to the pressing surface is in the shape of an I-shaped character, the notch in the I-shaped character is directly opposite to the pin cap of the hinge pin (A3), and the pressing block (12) in the pressing position (12A) presses against the hinge pin seat (A2) and the arc-shaped protrusion (A21) on both sides of the pin cap of the hinge pin (A3) at the same time; The pressing block (12) is in the shape of a T-shaped rod, the web rod (12a) of which is connected to the rod section of the free end of the connecting rod (121), and the rod end end surface of the wing rod (12b) close to the supporting block (11) is a pressing surface.

7. The door hinge installation device according to claim 1, characterized in that: The fixing mechanism (21) comprises a fixing sleeve (22) fixedly connected to the frame (1); the fixing sleeve (22) and the bolt hole (A11) of the hinge (A) are arranged adjacent to each other and the cores of the two holes are arranged concentrically; the torque wrench (20) is used to install the shaft of the hinge bolt and the through hole of the fixing sleeve (22) in an interference fit.

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