A positioning tool for assembling a middle door lower arm

Abstract

This utility model provides a positioning fixture for assembling the lower arm of a middle door, including a door body limiting pin, a lower arm limiting block, and a fitting block. The door body limiting pin is used to extend into the fixing hole of the door body and limit the door body. The lower arm limiting block is used to extend into the adjustable hole of the lower arm and limit the lower arm. The door body limiting pin is located in the middle of the lower arm limiting block and is fixedly connected to the lower arm limiting block. The fitting block is fixed to the end of the lower arm limiting block away from the door body limiting pin, and the fitting block has a fitting surface for fitting the lower arm of the middle door located on the side of the adjustable hole. Compared with the prior art, this positioning fixture pre-positions the relative position of the lower arm of the middle door on the door body to ensure the lower arm of the middle door in the assembled state of the door body, thereby ensuring the consistency of the door body assembly state, avoiding interference and paint peeling, and ensuring assembly quality.

Description

Technical Field

[0001] This utility model relates to the field of automotive assembly technology, and in particular to a positioning fixture for assembling the lower arm of a middle door. Background Technology

[0002] For microbuses, during assembly on the vehicle production line, the lower arm of the middle door is fixed to the door body by aligning three holes and inserting bolts for tightening. To ensure a quick and smooth fixing process, one of the fixing holes on the lower arm of the middle door is an adjustable hole, i.e., an oblong hole. The lower arm of the middle door and the door body are connected by bolts at the adjustable hole. Due to the design structure, to ensure the consistency of the assembly position of the lower arm of the middle door, tools or fixtures are needed to pre-determine the positions of the lower arm of the middle door and the door body.

[0003] Currently, there are no positioning devices at the assembly station for the lower arm of the middle door, making it impossible for employees to ensure that the lower arm of the middle door is fixed in the middle position of the adjustable hole. If the lower arm of the middle door is fixed too low, it will cause the door to rise and interfere with the B-pillar. If the lower arm of the middle door is fixed too high, it will cause the door to fall down and interfere with the upper arm of the middle door and the upper slide box, damaging the paint. Utility Model Content

[0004] This utility model provides a positioning fixture for assembling the lower arm of a middle door to solve the technical problem that the lower arm of the middle door and the door body cannot be aligned after the lower arm of the middle door is pre-fixed due to the existence of adjustable holes on the lower arm of the middle door.

[0005] This utility model provides a middle door lower arm assembly and positioning fixture, including a door body limiting pin, a lower arm limiting block, and a fitting block. The door body limiting pin is used to extend into the fixing hole of the door body and limit the door body. The lower arm limiting block is used to extend into the adjustable hole of the middle door lower arm and limit the middle door lower arm. The door body limiting pin is located in the middle of the lower arm limiting block and is fixedly connected to the lower arm limiting block. The fitting block is fixed to the end of the lower arm limiting block away from the door body limiting pin, and the fitting block has a fitting surface for fitting the lower arm of the middle door located on the side of the adjustable hole.

[0006] In one embodiment of the present invention, a handle is also included, the handle being fixed to one end of the fitting block away from the lower arm limiting block.

[0007] In one embodiment of the present invention, a fixing member is further included, which is used to fix the tooling to the lower arm of the middle door.

[0008] In one embodiment of this utility model, the fixing member is a magnet, and the magnet is fixed to the handle.

[0009] In one embodiment of this utility model, the outer edge of the lower arm limiting block and the adjustable hole of the middle door lower arm are in clearance fit.

[0010] In one embodiment of this utility model, the gap between the outer edge of the lower arm limiting block and the adjustable hole of the middle door lower arm is 1mm.

[0011] In one embodiment of the present invention, the thickness of the lower arm limiting block along the axial direction does not exceed 1.5 times the thickness of the adjustable hole of the lower arm of the middle door.

[0012] In one embodiment of this utility model, the door limiting pin, the lower arm limiting block, and the handle are arranged sequentially and integrally formed.

[0013] The beneficial effects of this utility model are as follows: This utility model proposes a positioning fixture for assembling the lower arm of a middle door. The lower arm limiting block is inserted into the adjustable hole of the lower arm of the middle door. The fixture, already equipped with the lower arm, is then brought close to the door body, and a door body limiting pin is inserted into the fixing hole of the door body. Since the lower arm limiting block and the door body limiting block are fixedly connected, the lower arm of the middle door can be pre-fixed to the door body. At this point, the positioning of the lower arm and the door body is achieved, and the door body can be bolted to the other fixing holes of the lower arm. Then, the fixture is removed, and the lower arm and the door body are bolted to the fixture position. Compared with the prior art, this positioning fixture pre-positions the relative position of the lower arm of the middle door on the door body to ensure the lower arm is in the assembled state of the door body, thereby ensuring the consistency of the door body assembly state, avoiding interference and paint peeling, and ensuring assembly quality. Attached Figure Description

[0014] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of a middle door lower arm assembly and positioning fixture as an example of this utility model.

[0017] The attached figures are labeled as follows:

[0018] 1. Middle door limit pin, 2. Lower arm limit block, 3. Adhesive block, 31. Adhesive surface, 4. Handle, 5. Magnet. Detailed Implementation

[0019] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0020] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0022] The specific structure of the middle door lower arm assembly and positioning fixture in this utility model is described in conjunction with [see reference 1]. Figure 1 The middle door lower arm assembly and positioning fixture includes: a door body limiting pin 1, a lower arm limiting block 2, and a fitting block 3. The door body limiting pin 1 is used to limit the door body by extending into the fixing hole of the door body. The lower arm limiting block 2 is used to limit the lower arm of the middle door by extending into the adjustable hole on the lower arm of the middle door. The door body limiting pin 1 is located in the middle of the lower arm limiting block 2 and is fixedly connected to the lower arm limiting block 2. The fitting block 3 is fixed to the end of the lower arm limiting block 2 away from the door body limiting pin 1. The fitting block 3 has a fitting surface 31 for fitting the lower arm of the middle door located on the side of the adjustable hole.

[0023] The door limiting pin 1, lower arm limiting block 2, and fitting block 3 all adopt a rigid structure. The outer diameter of the door limiting pin 1 is maintained within the fixing hole of the door body, but it also has a certain limiting effect on the fixing hole of the door body. That is, the outer diameter of the door limiting pin 1 is slightly smaller than the diameter of the fixing hole. Similarly, the outer diameter of the lower arm limiting block 2 is maintained within the adjustable hole of the lower arm of the middle door, but it also has a certain limiting effect on the adjustable hole of the lower arm of the middle door. That is, the outer diameter structure of the lower arm limiting block 2 is consistent with the inner diameter structure of the adjustable hole of the lower arm of the middle door, and its size is slightly smaller.

[0024] In actual implementation, the lower arm limiting block 2 is inserted into the adjustable hole of the middle door lower arm, and then the tooling with the middle door lower arm is brought close to the door body. The door body limiting pin 1 is inserted into the fixing hole of the door body. Since the lower arm limiting block 2 and the door body limiting block are fixedly connected, the middle door lower arm can be pre-fixed to the door body through the lower arm limiting block 2 and the door body limiting block. At this time, the positioning of the middle door lower arm and the door body is realized, and the door body and the other fixing holes of the middle door lower arm can be fixed with bolts. Then, the tooling is removed and the middle door lower arm and the door body are fixed with bolts at the tooling position.

[0025] In some embodiments, a handle 4 is also included, which is fixed to one end of the fitting block 3 away from the lower arm limiting block 2. For example, Figure 1 As shown, when using this tooling, handle 4 is the handhold position of this tooling, which is convenient for the operator to pick up.

[0026] In some embodiments, a fixing member is also included, which is used to secure the fixture to the lower arm of the middle door. After the fixture is used to position the door body and the lower arm of the middle door, the operator does not need to hold the fixture, ensuring operational feasibility.

[0027] In some embodiments, the fixing element is a magnet 5, which is fixed to the handle 4. For example, Figure 1 As shown, in this solution, magnet 5 can be a strong magnet 5. After the lower arm limit block 2 is positioned on the lower arm of the middle door, magnet 5 will attract the fixture onto the lower arm of the middle door, eliminating the need for the operator to hold the fixture and ensuring the feasibility of installing the door body and the lower arm of the middle door.

[0028] In some embodiments, the outer edge of the lower arm limiting block 2 and the adjustable hole of the middle door lower arm are in clearance fit. The clearance fit allows the lower arm limiting block 2 to extend into the adjustable hole of the middle door lower arm and position the middle door lower arm.

[0029] In some embodiments, the gap between the outer edge of the lower arm limiting block 2 and the adjustable hole of the middle door lower arm is 1mm. In practical applications, after multiple experiments, setting this gap to 1mm is more appropriate.

[0030] In some embodiments, the axial thickness of the lower arm limiting block 2 does not exceed 1.5 times the thickness of the adjustable hole of the lower arm of the middle door. This allows the lower arm limiting block 2 to extend into the adjustable hole of the lower arm of the middle door without the lower arm limiting block 2 pressing against the door body.

[0031] In some embodiments, the door limiting pin 1, the lower arm limiting block 2, and the handle 4 are arranged sequentially and integrally formed. For example, Figure 1 As shown, this makes the tooling relatively sturdy overall.

[0032] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A center door lower arm assembly positioning fixture, characterized by: The device includes a door limiting pin, a lower arm limiting block, and a fitting block. The door limiting pin is used to extend into the fixing hole of the door body and limit the door body. The lower arm limiting block is used to extend into the adjustable hole of the lower arm of the middle door and limit the lower arm of the middle door. The door limiting pin is located in the middle of the lower arm limiting block and is fixedly connected to the lower arm limiting block. The fitting block is fixed to the end of the lower arm limiting block away from the door limiting pin. The fitting block has a fitting surface for fitting the lower arm of the middle door located on the side of the adjustable hole.

2. The middle door lower arm assembly and positioning fixture according to claim 1, characterized in that: It also includes a handle, which is fixed to the end of the fitting block away from the lower arm limiting block.

3. The middle door lower arm assembly and positioning fixture according to claim 2, characterized in that: It also includes a fastener for securing the tooling to the lower arm of the middle door.

4. The middle door lower arm assembly and positioning fixture according to claim 3, characterized in that: The fixing element is a magnet, and the magnet is fixed to the handle.

5. The assembly positioning tool for a center door lower arm according to claim 1, wherein: The outer edge of the lower arm limiting block and the adjustable hole of the middle door lower arm are in clearance fit.

6. The middle door lower arm assembly and positioning fixture according to claim 5, characterized in that: The gap between the outer edge of the lower arm limiting block and the adjustable hole of the middle door lower arm is 1mm.

7. The assembly positioning tool for a center console armrest assembly of any one of claims 2-4, wherein: The thickness of the lower arm limiting block along the axial direction shall not exceed 1.5 times the thickness of the adjustable hole of the lower arm of the middle door.

8. The assembly positioning tool for a center door lower arm according to claim 7, characterized in that: The door limiting pin, the lower arm limiting block, and the handle are arranged sequentially and integrally formed.

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