Special tool for disassembling vehicle door hinge and using method thereof

Abstract

The special tool comprises a tool body, one end of the tool body is provided with a handle, the other end of the tool body is provided with a right-angle notch, the right-angle notch comprises a horizontal plane and a vertical plane which are perpendicular to each other, the horizontal plane is provided with a jacking column, and the jacking column abuts against a pin shaft of the vehicle door hinge. A groove is formed in the vertical face and used for containing a set screw of the automobile door hinge, and an avoiding position is arranged on the side, close to the vertical face, of the groove. According to the special tool for disassembling the vehicle door hinge and the using method thereof, the vehicle door hinge is convenient to disassemble, and the working efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of automobile disassembly tools, and in particular to a special tool for disassembling a door hinge and a use method thereof. Background Art

[0002] When assembling a car, the four doors on the car need to be removed first to facilitate the assembly of various components. The doors are installed on the car body through hinges to achieve the opening and closing of the doors.

[0003] Door hinges generally adopt hinge structure, such as Figure 1 As shown, the door hinge a includes a fixed page a1, a movable page a2, a pin a3 and a set screw a4. The fixed page a1 is installed on the vehicle body, the movable page a2 is installed on the door, the pin a3 is inserted into the vertical hole of the fixed page a1, and its position is locked by the set screw a4, and the movable page a2 is rotatably arranged on the pin a3. Since the gap between the pin a3 and the vertical hole is small, it is impossible to directly lift the door upward to make the pin a3 disengage from the vertical hole. Therefore, in actual production, it is necessary to use a thin rod-like tool to press against the lower end of the pin a3, and apply a certain pressure to the tool to achieve the purpose of lifting the pin a3 upward and disengaging it from the vertical hole. However, the above disassembly method is cumbersome to operate and inefficient. In order to meet the requirements of production rhythm, a special tool that is easy to operate is needed to improve the work efficiency of disassembling the door hinge. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a special tool for dismantling a door hinge and a method of using the same, so as to facilitate dismantling the door hinge and improve work efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A special tool for removing a door hinge comprises a tool body, one end of the tool body is provided with a handle, and the other end of the tool body is provided with a right-angle notch, the right-angle notch comprises a horizontal plane and a vertical plane perpendicular to each other, a lifting column is provided on the horizontal plane, the lifting column abuts against the pin shaft of the door hinge, a groove is provided on the vertical plane, the groove is used to accommodate the locking screw of the door hinge, and an avoidance position is provided on the side of the groove close to the vertical plane.

[0007] Furthermore, a slope is provided on the top of the lifting column, and the slope is inclined obliquely downward toward the vertical plane.

[0008] Furthermore, a limit block is provided at the bottom of the lifting column, an inverted T-shaped slot is provided on the tool body, the top of the inverted T-shaped slot extends to the horizontal plane, the limit block is arranged in the inverted T-shaped slot, and the position is locked by a first screw.

[0009] Furthermore, a pin is provided in the groove to act on the top of the set screw, and the end of the pin is a convex spherical surface.

[0010] Furthermore, the handle includes a fixing rod fixed on one end of the tool body, a sleeve slidably arranged on the fixing rod, and a second screw arranged on the sleeve, and the second screw is used to lock the position of the sleeve.

[0011] Furthermore, the sleeve is a flat structure, and two corresponding side walls of the sleeve are arc surfaces.

[0012] Furthermore, the fixing rod is provided with a plurality of torque adjustment holes extending along the length direction thereof, and the second screw can be inserted into any of the torque adjustment holes.

[0013] Furthermore, a rubber sleeve is sleeved on the sleeve.

[0014] Furthermore, a hollow hole is provided on the tool body.

[0015] A method for using a special tool for removing a car door hinge, applied to the special tool for removing a car door hinge, comprising:

[0016] S01, adjusting the position of the sleeve on the fixing rod to extend the total length of the handle, and locking the position of the sleeve by a second screw;

[0017] S02, unscrew the set screw of the door hinge so that the set screw is out of the pin and is still connected to the fixed leaf;

[0018] S03, insert the set screw into the groove, and at the same time, the top of the jacking column abuts against the lower end of the pin shaft;

[0019] S04, the worker presses down the casing with force, and the tool body swings downward around the contact point between the groove and the set screw, driving the jacking column to move upward, so as to lift the pin a certain distance and separate it from the fixed page;

[0020] S05, after the disassembly is completed, the position of the sleeve on the fixing rod is adjusted again to shorten the total length of the handle, and the position of the sleeve is locked by a second screw.

[0021] Beneficial effects: (1) By utilizing the lever principle, when the handle is pressed down, the tool body swings around the contact point between the groove and the set screw, driving the lifting column to move upward, and the lifting column lifts the pin shaft to achieve the function of removing the door hinge, which is easy to operate; (2) The length of the handle is adjustable. Increasing the handle length means increasing the length of the lever arm, thereby saving effort; shortening the handle length makes it easier to store special tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the structural diagram of the door hinge;

[0023] Figure 2 The structure of the special tool for removing the door hinge provided by the present invention Figure 1 ;

[0024] Figure 3 The invention provides a special tool for removing the door hinge. Figure 1 ;

[0025] Figure 4 The structure of the special tool for removing the door hinge provided by the present invention Figure 2 ;

[0026] Figure 5 The invention provides a special tool for removing the door hinge. Figure 2 ;

[0027] Figure 6 A structural diagram of the special tool for removing a door hinge provided by the present invention in use;

[0028] Figure 7 A cross-sectional view of the special tool for removing a vehicle door hinge provided by the present invention in use.

[0029] Figure numerals: tool body 1, hollow hole 11, inverted T-slot 12, first screw 13, through hole 14, handle 2, fixing rod 21, torque adjustment hole 211, sleeve 22, second screw 23, right-angle notch 3, horizontal plane 31, vertical plane 32, lifting column 4, inclined plane 41, limit block 42, groove 5, avoidance position 51, ejector pin 6, rubber sleeve 7, door hinge a, fixed page a1, movable page a2, pin a3, set screw a4, concave spherical surface a41. DETAILED DESCRIPTION

[0030] The present invention provides a special tool for removing a car door hinge and a method for using the same. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] See also Figures 2 to 7 As shown, the present invention provides a special tool for removing a door hinge, including a tool body 1. A handle 2 is provided at one end of the tool body 1, and a right-angle notch 3 is provided at the other end thereof. The right-angle notch 3 includes a horizontal surface 31 and a vertical surface 32 that are perpendicular to each other. A lifting column 4 is provided on the horizontal surface 31, and the lifting column 4 abuts against a pin shaft a3 of the door hinge a. A groove 5 is provided on the vertical surface 32, and the groove 5 is used to accommodate a fixing screw a4 of the door hinge a. An avoidance position 51 is provided on the side of the groove 5 close to the vertical surface 32.

[0032] In actual operation, loosen the set screw a4 in advance so that the set screw a4 exits the pin a3 and is still connected to the fixed page a1. Then hold the handle 2 and insert the groove 5 into the set screw a4, that is, the bottom of the groove 5 contacts the end of the set screw a4, so that the tool body 1 can swing up and down around the contact point; the top of the jacking column 4 abuts against the lower end of the pin a3. At this time, the staff holds the car door with one hand and presses the handle 2 with the other hand. The tool body 1 swings around the contact point to drive the jacking column 4 to move upward, thereby lifting the pin a3 for a distance and leaving the vertical hole. Using the principle of leverage, the force of pressing the handle 2 downward is converted into the pressure applied by the jacking column 4 to the pin a3 to realize the removal of the car door hinge. The operation is simple and the work efficiency is improved.

[0033] Since the car door has a certain weight, it is necessary to lift the car door through a lifting device in actual work. Therefore, during the process of disassembling the door hinge a, the staff only needs to slightly support the car door with one hand, and use the other hand to operate the special tool to disassemble the door hinge a.

[0034] In a preferred embodiment, see Figure 2 , 7 The top of the lifting column 4 is provided with an inclined surface 41, which is inclined downwardly inclined toward the vertical surface 32. The inclined surface 41 increases the contact area between the lifting column 4 and the pin a3, which is conducive to the lifting column 4 lifting the pin a3; at the same time, before removing the door hinge a, the inclined surface 41 abuts against the lower end of the pin a3, and the tool body 1 is in an inclined upward state, which is convenient for the operator to press down the handle 2.

[0035] In a preferred embodiment, see Figure 4 , 5 The bottom of the jacking column 4 is provided with a limit block 42, the tool body 1 is provided with an inverted T-shaped slot 12, the top of the inverted T-shaped slot 12 extends to the horizontal plane 31, the limit block 42 is arranged in the inverted T-shaped slot 12, and the position is locked by the first screw 13. The jacking column 4 and the limit block 42 are an integral structure, and the limit block 42 is detachably installed in the inverted T-shaped slot 12 to facilitate the replacement of the jacking column 4.

[0036] Preferably, the inverted T-slot 12 is a blind hole structure. When the limit block 42 is installed in the inverted T-slot 12, the axis line of the lifting column 4 is located on the plane where the center plane of the groove 5 is located. A through hole 14 connected to the inverted T-slot 12 is opened on the tool body 1. The first screw 13 passes through the through hole 14 and is connected to the limit block 42 to lock the position of the limit block 42.

[0037] Preferably, the limit block 42 is tightly connected to the inverted T-slot 12. When disassembling the lifting column 4, a slender tool is used to pass through the through hole 14 to knock out the limit block 42; when installing, the limit block 42 and the lifting column 4 are aligned with the inverted T-slot 12, and they are knocked into place with a tool.

[0038] In a preferred embodiment, see Figure 2 , 7 In order to make the tool body 1 swing around the contact point flexibly, a pin 6 acting on the top of the set screw a4 is provided in the groove 5, and the end of the pin 6 is a convex spherical surface. Among them, a concave spherical surface a41 is provided at the end of the set screw a4, and the cooperation between the convex spherical surface and the concave spherical surface a41 is conducive to the swing of the tool body 1 around the fixed point.

[0039] Preferably, the inner diameter of the groove 5 is larger than the outer diameter of the set screw a4, and the avoidance position 51 is arranged close to the horizontal plane 31 to limit the swing direction of the tool body 1. During operation, the handle 2 is pressed down, and the avoidance position 51 moves toward the set screw a4.

[0040] In the above, the ejector pin 6 is threadedly connected to the groove 5 so as to stably install the ejector pin 6 in the groove 5 .

[0041] Since both the ejector pin 6 and the lifting column 4 are easily worn parts, the ejector pin 6 is threadedly connected to the groove 5, and the lifting column 4 is detachably connected to the inverted T-slot 12 through the limit block 42, so as to facilitate the replacement of the ejector pin 6 and the lifting column 4.

[0042] In a preferred embodiment, see Figure 3 The handle 2 includes a fixing rod 21 fixed to one end of the tool body 1, a sleeve 22 slidably arranged on the fixing rod 21, and a second screw 23 arranged on the sleeve 22, and the second screw 23 is used to lock the position of the sleeve 22. Figure 6 As shown, by adjusting the position of the sleeve 22 on the fixed rod 21, the length of the handle 2 is increased, that is, the lever arm is increased, thereby achieving a labor-saving effect. Figure 2 As shown, when the special tool is not in use, the sleeve 22 is completely sleeved on the fixing rod 21 to shorten the length of the handle 2, which is conducive to storing the special tool.

[0043] Furthermore, the sleeve 22 is a flat structure, and the two corresponding side walls of the sleeve 22 are arc surfaces. The above arrangement facilitates the worker to grasp the handle 2, thereby improving the comfort of using the special tool.

[0044] To adjust the length of the handle 2, refer to Figure 3The fixing rod 21 is provided with a plurality of torque adjustment holes 211 extending along the length direction thereof, and the second screw 23 can be inserted into any of the torque adjustment holes 211. Specifically, the second screw 23 is threadedly connected with the sleeve 22, and the second screw 23 is loosened so that the second screw 23 is withdrawn from the torque adjustment hole 211, and then the position of the sleeve 22 on the fixing rod 21 is adjusted, and the second screw 23 is screwed in so that the second screw 23 is inserted into the corresponding torque adjustment hole 211, thereby locking the position of the sleeve 22.

[0045] Preferably, the second screw 23 is a hand-tightened screw for easy operation; and the second screw 23 is located at one end of the sleeve 22 close to the tool body 1 to prevent the second screw 23 from interfering with the worker's gripping of the sleeve 22 .

[0046] Preferably, see Figure 3 A rubber sleeve 7 is sleeved on the sleeve 22 to further improve the comfort of the staff when using the special tool.

[0047] In a preferred embodiment, see Figure 2 The tool body 1 is provided with a hollow hole 11 to reduce the weight.

[0048] In order to further reduce the weight of the tool body 1 , the fixing rod 21 is a hollow structure.

[0049] The present invention also provides a method for using a special tool for removing a vehicle door hinge, which is applied to the special tool for removing a vehicle door hinge, comprising:

[0050] S01, adjust the position of the sleeve 22 on the fixing rod 21 to extend the total length of the handle 2, and lock the position of the sleeve 22 by the second screw 23. Specifically, according to the actual use scenario, the sleeve 22 can be moved to a suitable position on the fixing rod 21, and the second screw 23 can be inserted into the corresponding torque adjustment hole 211.

[0051] S02, unscrew the set screw a4 of the door hinge a, so that the set screw a4 exits the pin a3 and is still connected to the fixed leaf a1.

[0052] S03, insert the groove 5 into the set screw a4, specifically, place the ejector pin 6 in the groove 5 against the set screw a4, the convex spherical surface of the ejector pin 6 cooperates with the concave spherical surface a41 of the set screw a4, which is conducive to the swing of the tool body 1 around the fixed point. At the same time, the top of the jacking column 4 abuts against the lower end of the pin a3. Since the top of the jacking column 4 is an inclined surface 41, when the inclined surface 41 abuts against the lower end of the pin a3, the tool body 1 is in an upward tilted state, which is conducive to the staff to press the handle 2 downward.

[0053] S04, the staff presses down the sleeve 22 with force, and the tool body 1 swings downward around the contact point between the groove 5 and the set screw a4. Specifically, the ejector pin 6 on the groove 5 abuts against the set screw a4. During the downward swinging of the tool body 1, the lifting column 4 is driven to move upward, and the lifting column 4 acts on the pin a3 to lift the pin a3 for a distance and disengage it from the vertical hole of the fixed page a1.

[0054] S05, after the disassembly is completed, the position of the sleeve 22 on the fixing rod 21 is adjusted again to shorten the total length of the handle 2, and the position of the sleeve 22 is locked by the second screw 23. By shortening the total length of the handle 2, it is beneficial to store and organize the special tool for disassembling the door hinge a of the present invention.

[0055] In summary, the present invention inserts the groove 5 into the locking screw a4 of the door hinge a, and the inclined surface 41 of the lifting column 4 abuts against the lower end of the pin a3. When the operator presses down the handle 2, the tool body 1 swings around the contact point between the ejector pin 6 and the locking screw a4 to drive the lifting column 4 to move upward. The lifting column 4 lifts the pin a3 for a distance, and the pin a3 is separated from the vertical hole, completing the removal of the door hinge a. The operation is simple and the work efficiency is high. In addition, the handle 2 is set to be adjustable in length. When the length of the handle 2 is increased, the length of the lever arm is increased, which further plays a labor-saving role; when the length of the handle 2 is shortened, it is convenient to store special tools.

[0056] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. A special tool for removing a door hinge, characterized in that: The tool body comprises a tool body, one end of which is provided with a handle, and the other end of which is provided with a right-angle notch, the right-angle notch comprising a horizontal plane and a vertical plane perpendicular to each other, the horizontal plane is provided with a lifting column, the lifting column abuts against the pin shaft of the door hinge, the vertical plane is provided with a groove, the groove is used to accommodate the fixing screw of the door hinge, and an avoidance position is provided on the side of the groove close to the vertical plane.

2. The special tool for removing a door hinge according to claim 1, characterized in that: The top of the lifting column is provided with an inclined surface, which is inclined obliquely downward toward the vertical plane.

3. The special tool for removing a door hinge according to claim 1, characterized in that: A limit block is provided at the bottom of the lifting column, an inverted T-shaped slot is provided on the tool body, the top of the inverted T-shaped slot extends to the horizontal plane, the limit block is arranged in the inverted T-shaped slot, and the position is locked by a first screw.

4. The special tool for removing a door hinge according to claim 1, characterized in that: A pin is arranged in the groove and acts on the top of the set screw, and the end of the pin is a convex spherical surface.

5. The special tool for removing a door hinge according to claim 1, characterized in that: The handle comprises a fixing rod fixed on one end of the tool body, a sleeve slidably arranged on the fixing rod, and a second screw arranged on the sleeve, wherein the second screw is used for locking the position of the sleeve.

6. The special tool for removing a door hinge according to claim 5, characterized in that: The sleeve is a flat structure, and two corresponding side walls of the sleeve are arc surfaces.

7. The special tool for removing a door hinge according to claim 5, characterized in that: The fixing rod is provided with a plurality of torque adjustment holes extending along the length direction thereof, and the second screw can be inserted into any of the torque adjustment holes.

8. The special tool for removing a door hinge according to claim 5, characterized in that: The sleeve is sleeved with a rubber sleeve.

9. The special tool for removing a vehicle door hinge according to claim 1, characterized in that: The tool body is provided with a hollow hole.

10. A method for using a special tool for removing a door hinge, characterized in that: The special tool for removing a door hinge as claimed in claim 5 comprises: S01, adjusting the position of the sleeve on the fixing rod to extend the total length of the handle, and locking the position of the sleeve by a second screw; S02, unscrew the set screw of the door hinge so that the set screw is out of the pin and is still connected to the fixed leaf; S03, insert the set screw into the groove, and at the same time, the top of the jacking column abuts against the lower end of the pin shaft; S04, the worker presses down the casing with force, and the tool body swings downward around the contact point between the groove and the set screw, driving the jacking column to move upward, so as to lift the pin a certain distance and separate it from the fixed page; S05, after the disassembly is completed, the position of the sleeve on the fixing rod is adjusted again to shorten the total length of the handle, and the position of the sleeve is locked by a second screw.

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