An auxiliary positioning fixture for car door assembly

Abstract

This invention discloses an auxiliary positioning fixture for car door assembly, comprising a base, a base mounting structure, and a car door positioning structure. The base extends vertically. The base mounting structure includes a hanging assembly and a clamping assembly disposed on the base and spaced apart vertically. The hanging assembly includes a first hanging part and a second hanging part spaced apart horizontally. The clamping assembly includes two clamping structures spaced apart horizontally. The car door positioning structure includes a movable positioning component and a fixing pin spaced apart horizontally, and a snap plate located between the movable positioning component and the fixing pin and extending vertically. The movable positioning component and the fixing pin are located on the left and right sides of the base respectively, for engaging with two process holes of the car door. The snap plate is rotatably mounted on the upper end of the base along an axis extending horizontally, so as to be able to engage or disengage with the upper end of the car door. The positioning and installation of the auxiliary positioning fixture for car door assembly is simple and convenient, and easy to disassemble and assemble, enabling rapid auxiliary positioning of the car door.

Description

Technical Field

[0001] This invention relates to the field of vehicle door assembly technology, and more specifically to an auxiliary positioning fixture for vehicle door assembly. Background Technology

[0002] During car door installation, in order to ensure installation accuracy, tooling is generally used for auxiliary positioning. However, existing tooling is prone to touching the car body exterior during use. Furthermore, with the application of new technologies, the door contact switch is integrated into the door lock body, and the corresponding tooling auxiliary positioning hole (contact switch mounting hole) on the side of the car body has also been eliminated. As a result, the existing tooling cannot meet the door installation positioning requirements. Summary of the Invention

[0003] The main objective of this invention is to propose an auxiliary positioning fixture for car door assembly, which aims to solve the problem that existing fixtures cannot meet the positioning requirements for car door installation after the corresponding positioning holes on the side of the vehicle body are removed.

[0004] To achieve the above objectives, the present invention proposes an auxiliary positioning fixture for vehicle door assembly, comprising:

[0005] The seat extends vertically and is designed to be installed on the inside of the vehicle door.

[0006] A mounting structure includes a mounting assembly and a clamping assembly disposed on the mounting body and spaced apart vertically. The mounting assembly includes a first mounting portion and a second mounting portion spaced apart horizontally, which are respectively used to mate with two positioning holes on the vehicle body. The clamping assembly includes two clamping structures spaced apart horizontally, which are respectively used to clamp the sheet metal at the periphery of the vehicle door.

[0007] The door positioning structure includes a movable positioning component and a fixed pin spaced apart in the left-right direction, and a buckle plate located between the movable positioning component and the fixed pin and extending in the up-down direction. The movable positioning component and the fixed pin are located on the left and right sides of the seat body respectively, and are used to cooperate with two process holes of the door. The buckle plate is rotatably installed on the upper end of the seat body along the axis extending in the front-rear direction, so that it can be rotated to engage with the upper end of the door or rotated to separate from the upper end of the door.

[0008] Optionally, the mounting group includes a first mounting component and a second mounting component spaced apart in a left-right direction, wherein:

[0009] The first mounting assembly includes a mounting block, a first mounting arm, and a first positioning post. The mounting block is mounted on the front side of the base. The first mounting arm is mounted on the upper end face of the mounting block and extends in the left and right directions, so that the left end of the first mounting arm protrudes from the left side of the base. The first positioning post is located on the rear side of the left end of the first mounting arm.

[0010] The second mounting assembly includes a fixing block, a second mounting arm, and a second positioning post. The fixing block is mounted on the front side of the base body. The second mounting arm is mounted on the right side of the fixing block and extends in the left-right direction so that the right end of the second mounting arm protrudes from the right end of the base body. The second positioning post is located on the rear side of the right end of the second mounting arm.

[0011] The first mounting part includes the first positioning post;

[0012] The second mounting part includes the second positioning post.

[0013] Optionally, the right side of the fixing block is provided with a plurality of first connecting holes, which are arranged at intervals along the vertical direction;

[0014] The second mounting arm includes a first mounting section extending vertically and a second mounting section extending horizontally. The first mounting section is provided with a second connecting hole extending horizontally. The second connecting hole can be selectively matched with one of the plurality of first connecting holes for a connector to pass through, so that the position of the first mounting section in the vertical direction can be adjusted. The second mounting section is provided with a plurality of third connecting holes extending vertically, and the plurality of third connecting holes are spaced apart horizontally.

[0015] The second mounting assembly also includes a connecting block extending in the left-right direction. The connecting block has a fourth connecting hole extending in the up-down direction. The fourth connecting hole can be selectively matched with one of the plurality of third connecting holes for the connection member to pass through, so that the position of the connecting block in the up-down direction can be adjusted.

[0016] The second positioning post is installed on the rear side end of the connecting block and its position can be adjusted in the front-back direction.

[0017] Optionally, the connecting block has mounting holes on both sides in the front and rear directions, and the second positioning post is partially inserted into the mounting holes to have a positioning section protruding from the rear side of the connecting block;

[0018] The right side of the connecting block is provided with a threaded connection hole, which is connected to the mounting hole.

[0019] The second mounting assembly also includes a locking screw extending in the left-right direction. The screw end of the locking screw is threaded into the threaded connection hole and extends into the mounting hole so as to abut against the second positioning post to lock the second positioning post.

[0020] Optionally, each of the clamping structures includes:

[0021] A baffle, installed on the front side of the seat and extending laterally, protrudes partially from the seat to abut against the outer side of the sheet metal at the vehicle door; and,

[0022] The abutment assembly includes a connecting seat and a limiting arm. The connecting seat is installed on one side of the seat body in the left-right direction. The limiting arm has a connecting end and an mounting end arranged opposite to each other in the left-right direction. The mounting end is provided with an abutment head. The connecting end is rotatably installed on the connecting seat along an axis extending in the up-down direction, so that the abutment head can rotate to abut against the inner side of the sheet metal at the door of the vehicle body, so as to work together with the baffle to clamp and fix it to the sheet metal at the door of the vehicle body.

[0023] Optionally, the abutment component further includes:

[0024] The lever includes a lever body extending in the front-to-back direction and two connecting arms disposed on the rear end face of the lever body. The two connecting arms are spaced apart in the vertical direction to form a receiving gap. Both connecting arms are rotatably mounted on the connecting seat along the vertical axis.

[0025] A linkage component is located in the accommodating gap and extends in the left and right directions. One end of the linkage component is rotatably mounted between the two connecting arms along the vertical axis, and the other end is rotatably mounted on the limiting arm along the vertical axis. A limiting block is protruding on the side of the linkage component near the abutment head. The limiting block is used to abut against the mounting end when the abutment head abuts against the inner side of the sheet metal at the door of the vehicle body, so as to lock the limiting arm.

[0026] Optionally, the active positioning component includes:

[0027] An installation sleeve is provided on the left side of the base and extends in the front-to-back direction. A return spring and a guide sleeve are sequentially provided inside the installation sleeve in the front-to-back direction. One end of the return spring is connected to the guide sleeve.

[0028] A locating pin includes a mating section and a connecting section arranged sequentially in a front-rear direction. The diameter of the mating section is larger than the diameter of the connecting section, such that the mating section has a boss protruding outward relative to the connecting section. The connecting section has a return spring and a guide sleeve passing through it sequentially in a front-rear direction, such that the boss abuts against the other end of the return spring.

[0029] A pull rod, which passes through the guide sleeve and is connected to the connecting section, is used to drive the positioning pin part to retract under the action of external force.

[0030] Optionally, the rear end of the pull rod is provided with an overlapping protrusion;

[0031] The auxiliary positioning fixture for the door assembly also includes a pin-pulling structure, which includes:

[0032] A lever, rotatably mounted on the rear side of the base along a left-right extending axis; and,

[0033] A pull pin block is installed at the lower end of the lever and extends in the left and right direction. The upper end of the pull pin block has a locking protrusion. The upper surface of the locking protrusion has a locking groove extending in the up and down direction. The side wall of the locking groove is provided with the locking protrusion on both sides in the front and back direction for the pull rod to pass through.

[0034] Optionally, the front side of the seat is provided with two support blocks, which are spaced apart in the left and right direction to support the vehicle door.

[0035] Optionally, the auxiliary positioning fixture for assembling the vehicle door further includes a seat support assembly, the seat support assembly comprising:

[0036] A snap-fit ​​block is provided at the lower end of the seat and extends vertically. The lower end of the snap-fit ​​block has a receiving groove. The sidewalls of the receiving groove extend through the two sides of the snap-fit ​​block arranged horizontally, for accommodating a stop portion at the door mounting opening on the vehicle body; and...

[0037] An abutment block is provided at the lower end of the seat and extends vertically. The abutment block and the snap-fit ​​block are spaced apart and are used to abut against the stop part at the door mounting opening on the body.

[0038] In the technical solution of this invention, the first mounting part and the second mounting part respectively cooperate with two positioning holes on the vehicle body, so that the auxiliary positioning fixture for door assembly is positioned at the door mounting location and clamped and fixed to the vehicle body by the two clamping structures. Thus, the auxiliary positioning fixture for door assembly is installed and fixed on the inside of the door of the vehicle body. Furthermore, the movable positioning component, the fixing pin, and the buckle plate are used to perform auxiliary positioning for the vehicle door assembly to meet assembly accuracy requirements. The positioning and installation of the auxiliary positioning fixture for door assembly is simple and convenient, and easy to disassemble and assemble, enabling rapid auxiliary positioning of the door and improving door assembly efficiency. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0040] Figure 1 Structural schematic of an embodiment of the auxiliary positioning fixture for door assembly provided by the present invention;

[0041] Figure 2 for Figure 1 Another structural schematic diagram of the auxiliary positioning fixture for the CRRC door assembly;

[0042] Figure 3 for Figure 1 Cross-sectional view of the active positioning component;

[0043] Figure 4 A schematic diagram of the installation of auxiliary positioning fixtures for assembling car doors.

[0044] Explanation of icon numbers:

[0045] label name label name 100 Auxiliary positioning fixture for car door assembly 22122a Top of head 1 base body 2213 Turn the handle 11 support block 2213a Handle body 2 Seat mounting structure 2213b Connecting arm 21 Hanging group 2214 Linkage components 21a First mounting section 2214a Limit block 21b Second mounting section 3 Door positioning structure 211 First mounting component 31 Activity positioning component 2111 Mounting Block 311 Installation kit 2112 First mounting arm 311a Return spring 2113 First positioning post 311b Guide sleeve 212 Second mounting component 312 Positioning pin 2121 Fixed block 312a boss 2122 First mounting arm 313 Pull rod 2122a Second connecting hole 313a Overlapping protrusions 2123 Second positioning post 32 Fixed pin 2124 Connecting block 33 snap-on panels 2124a Fourth connecting hole 4 Pin Pulling Structure 2124b Mounting holes 41 lever 2124c Threaded connection hole 42 Pin puller 22 Clamping group 421 Card 221 Clamping structure 421a Card slot 2211 baffle 5 Seat support assembly 2212 Top component 51 Card Block 22121 Connector 52 abutment block 22122 Limit arm

[0046] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0048] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0049] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0050] During car door installation, in order to ensure installation accuracy, tooling is generally used for auxiliary positioning. However, existing tooling is prone to touching the car body exterior during use. Furthermore, with the application of new technologies, the door contact switch is integrated into the door lock body, and the corresponding tooling auxiliary positioning hole (contact switch mounting hole) on the side of the car body has also been eliminated. As a result, the existing tooling cannot meet the door installation positioning requirements.

[0051] In view of this, the present invention proposes an auxiliary positioning fixture for car door assembly, which is simple and convenient to position and install, and easy to disassemble and assemble, enabling rapid auxiliary positioning of car doors and improving car door assembly efficiency. Figures 1 to 4 The image shows an embodiment of the auxiliary positioning fixture for car door assembly provided by the present invention.

[0052] like Figure 1 , Figure 2 and Figure 4As shown, the auxiliary positioning fixture 100 for vehicle door assembly proposed in this invention includes a seat 1, a seat mounting structure 2, and a door positioning structure 3. The seat 1 extends vertically and is installed to the inside of the vehicle door. The seat mounting structure 2 includes a hanging group 21 and a clamping group 22 disposed on the seat 1 and spaced apart vertically. The hanging group 21 includes a first hanging part 21a and a second hanging part 21b spaced apart horizontally. The first hanging part 21a and the second hanging part 21b are respectively used to cooperate with two positioning holes on the vehicle body. The clamping group 22 includes two clamping structures 221 spaced apart horizontally. The two clamping structures 221 are used to clamp the sheet metal at the periphery of the door of the vehicle body; the door positioning structure 3 includes a movable positioning component 31 and a fixed pin 32 arranged at intervals in the left and right directions, and a buckle plate 33 located between the movable positioning component 31 and the fixed pin 32 and extending in the up and down direction. The movable positioning component 31 and the fixed pin 32 are located on the left and right sides of the seat 1 respectively, and are used to cooperate with the two process holes of the door. The buckle plate 33 is rotatably installed on the upper end of the seat 1 along the axis extending in the front and rear directions, so that it can be rotated to engage with the upper end of the door, or rotated to separate from the upper end of the door.

[0053] In the technical solution of this invention, the first mounting part 21a and the second mounting part respectively cooperate with two positioning holes on the vehicle body, so that the auxiliary positioning fixture 100 for door assembly is positioned at the door mounting location and clamped and fixed to the vehicle body by the two clamping structures 221. Thus, the auxiliary positioning fixture 100 for door assembly is installed and fixed on the inner side of the door of the vehicle body. Furthermore, the movable positioning component 31, the fixing pin 32, and the buckle plate 33 are used to perform auxiliary positioning for the vehicle door assembly to meet the assembly accuracy requirements. The positioning and installation of the auxiliary positioning fixture 100 for door assembly is simple and convenient, and easy to disassemble and assemble, enabling rapid auxiliary positioning of the door and improving door assembly efficiency.

[0054] In this embodiment, as Figure 1 and Figure 2As shown, the mounting assembly 21 includes a first mounting component 211 and a second mounting component 212 spaced apart in the left-right direction. The first mounting component 211 includes a mounting block 2111, a first mounting arm 2112, and a first positioning post 2113. The mounting block 2111 is mounted on the front side of the base 1. The first mounting arm 2112 is mounted on the upper end face of the mounting block 2111 and extends in the left-right direction, such that the left end of the first mounting arm 2112 protrudes beyond the left side of the base 1. The first positioning post 2113 is located on the rear side of the left end of the first mounting arm 2112. The second mounting assembly 212 includes a fixing block 2121, a second mounting arm 2122, and a second positioning post 2123. The fixing block 2121 is mounted on the front side of the seat 1. The second mounting arm 2122 is mounted on the right side of the fixing block 2121 and extends in the left-right direction, so that the right end of the second mounting arm 2122 protrudes beyond the right side of the seat 1. The second positioning post 2123 is located on the rear side of the right end of the second mounting arm 2122. The first mounting part 21a includes the first positioning post 2113; the second mounting part 21b includes the second positioning post 2123. Thus, the first positioning post 2113 and the second positioning post 2123 are used to position the auxiliary positioning fixture 100 for door assembly in the corresponding position on the vehicle body to ensure the accuracy of its installation position and improve the auxiliary positioning accuracy of door installation.

[0055] To make the positioning of the auxiliary positioning fixture 100 for the door assembly on the vehicle body more convenient and flexible, the second positioning post 2123 can be finely adjusted in its left-right-upward position. Specifically, in this embodiment, as... Figure 1As shown, the right side of the fixing block 2121 is provided with a plurality of first connecting holes, which are spaced apart vertically. The second mounting arm 2122 includes a first mounting section extending vertically and a second mounting section extending horizontally. The first mounting section is provided with a second connecting hole 2122a extending horizontally. The second connecting hole 2122a can be selectively matched with one of the plurality of first connecting holes for a connector to pass through, so that the position of the first mounting section can be adjusted vertically. The second mounting section is provided with a second connecting hole 2122a extending horizontally. The second mounting assembly 212 further includes a connecting block 2124 extending in the left-right direction, the connecting block 2124 having a fourth connecting hole 2124a extending in the up-down direction, the fourth connecting hole 2124a being selectively matched with one of the third connecting holes for the insertion of a connector, so that the position of the connecting block 2124 is adjustable in the up-down direction; the second positioning post 2123 is mounted on the rear side end of the connecting block 2124 and is adjustable in the front-back direction. According to the positioning requirements of the second positioning post 2123, the first mounting section is adjusted in the vertical direction, and the connecting block 2124 is adjusted in the vertical direction, so that the second positioning post 2123 can be adjusted in the vertical and horizontal directions, and the second positioning post 2123 can be adjusted in the front and rear directions. In this way, the second positioning post 2123 can be adjusted in multiple directions, so that the auxiliary positioning fixture 100 for door assembly can be positioned and installed on different vehicle models, improving the practicality of the auxiliary positioning fixture 100 for door assembly.

[0056] Specifically, in this embodiment, such as Figure 1 As shown, the connecting block 2124 has mounting holes 2124b on both its front and rear sides. The second positioning pin 2123 partially passes through the mounting holes 2124b, having a positioning section protruding from the rear side of the connecting block 2124. The right side of the connecting block 2124 has a threaded connection hole 2124c, which communicates with the mounting holes 2124b. The second mounting assembly 212 also includes a locking screw (not shown) extending in the left-right direction. The screw end of the locking screw is threaded into the threaded connection hole 2124c and extends into the mounting hole 2124b to abut against the second positioning pin 2123, thereby locking the second positioning pin 2123. Thus, the position of the second positioning pin 2123 is adjustable in the front-rear direction to better fit the positioning holes on the vehicle body.

[0057] In this embodiment, as Figure 1 and Figure 2As shown, each of the clamping structures 221 includes a baffle 2211 and abutting assembly 2212. The baffle 2211 is installed on the front side of the seat 1 and extends in the left-right direction so that it can partially protrude outside the seat 1 to abut against the outer side of the sheet metal at the door of the vehicle body. The abutting assembly 2212 includes a connecting seat 22121 and a limiting arm 22122. The connecting seat 22121 is installed on one side of the seat 1 in the left-right direction. The limiting arm 22122 has a connecting end and an mounting end arranged opposite to each other in the left-right direction. The mounting end is provided with abutting head 22122a. The connecting end is rotatably installed on the connecting seat 22121 along an axis extending in the up-down direction so that the abutting head 22122a can rotate to abut against the inner side of the sheet metal at the door of the vehicle body, so as to work together with the baffle 2211 to clamp and fix it to the sheet metal at the door of the vehicle body. Thus, the baffle 2211 and the abutment are respectively pressed against the opposite sides of the sheet metal at the door of the vehicle body to fix the auxiliary positioning fixture 100 for assembling the door to the vehicle body.

[0058] To ensure a more stable and reliable contact between the abutment head and the sheet metal at the vehicle door, the abutment assembly 2212 is provided with a limiting structure. Specifically, in this embodiment, as follows: Figure 1 and Figure 2As shown, the abutment assembly 2212 further includes a toggle handle 2213 and a linkage member 2214. The toggle handle 2213 includes a handle body 2213a extending in the front-rear direction and two connecting arms 2213b disposed on the rear end face of the handle body 2213a. The two connecting arms 2213b are spaced apart in the vertical direction to form a receiving gap. Both connecting arms 2213b are rotatably mounted on the connecting seat 22121 along the vertical axis. The linkage member 2214 is located in the receiving gap and extends along the left... Extending to the right, one end of the linkage 2214 is rotatably mounted between the two connecting arms 2213b along the vertically extending axis, and the other end is rotatably mounted on the limiting arm 22122 along the vertically extending axis. A limiting block 2214a protrudes from the side of the linkage 2214 near the abutment head 22122a. The limiting block 2214a is used to abut against the mounting end when the abutment head 22122a abuts against the inner side of the sheet metal at the door of the vehicle body, so as to lock the limiting arm 22122. Thus, under the action of external force, the toggle handle 2213 is rotated to drive the limiting arm 22122 to rotate, so that the abutment head 22122a rotates to abut against the inner side of the sheet metal at the door of the vehicle body. At this time, the limiting block 2214a abuts against the mounting end to lock the limiting arm 22122, so that the abutment head 22122a and the baffle 2211 together clamp the sheet metal at the periphery of the door of the vehicle body, so that the auxiliary positioning fixture 100 for the door assembly is fixed on the vehicle body.

[0059] In this embodiment, as Figure 2 and Figure 3As shown, the movable positioning component 31 includes a mounting sleeve 311, a positioning pin 312, and a pull rod 313. The mounting sleeve 311 is located on the left side of the base 1 and extends in the front-rear direction. A return spring 311a and a guide sleeve 311b are sequentially arranged in the front-rear direction inside the mounting sleeve 311. One end of the return spring 311a is connected to the guide sleeve 311b. The positioning pin 312 includes a mating section and a connecting section arranged in the front-rear direction. The diameter of the mating section is larger than the diameter of the connecting section, so that the mating section has a boss 312a that protrudes outward relative to the connecting section. The connecting section passes through the return spring 311a and the guide sleeve 311b in the front-rear direction, so that the boss 312a can abut against the other end of the return spring 311a. The pull rod 313 passes through the guide sleeve 311b and is connected to the connecting section, so as to drive the positioning pin 312 to partially retract under the action of external force. Thus, after the door is installed, the pull rod 313 is pulled to retract the positioning pin 312, so that it can be separated from the process hole of the door, so as to separate the auxiliary positioning fixture 100 that assembles the door from the door.

[0060] To facilitate easier movement of the positioning pin 312, an auxiliary pin-pulling structure 4 is provided. Specifically, in this embodiment, as follows: Figure 2 As shown, the rear end of the pull rod 313 has a protruding overlapping protrusion 313a; the auxiliary positioning fixture 100 for the door assembly also includes a pin pulling structure 4, which includes a lever 41 and a pin pulling block 42. The lever 41 is rotatably mounted on the rear side of the seat 1 along an axis extending in the left and right directions; the pin pulling block 42 is mounted on the lower end of the lever 41 and extends in the left and right directions. The upper end of the pin pulling block 42 has a protruding locking protrusion 421, and the upper surface of the locking protrusion 421 has a locking groove 421a extending in the up and down directions. The side wall of the locking groove 421a passes through the two sides of the locking protrusion 421 in the front and rear directions for the pull rod 313 to pass through. Thus, when the lever 41 is rotated under the action of external force, the pin pulling block 42 can be moved, so that the rear side of the locking protrusion 421 abuts against the overlapping protrusion 313a, thereby causing the positioning pin 312 to partially retract.

[0061] To ensure more reliable positioning of the vehicle door by the auxiliary positioning fixture 100 on which the door is assembled, the seat 1 is provided with a support portion. In this embodiment, as... Figure 1As shown, the front side of the seat 1 is provided with two support blocks 11, which are spaced apart in the left-right direction to support the car door. Thus, when the car door is positioned on the auxiliary positioning fixture 100 for car door assembly, the two support blocks 11 can support the car door, improving its stability and making installation easier while ensuring the assembly accuracy of the car door.

[0062] To improve the load-bearing capacity of the seat 1, a support structure is provided at the lower end of the seat 1. In this embodiment, such as... Figure 1 As shown, the auxiliary positioning fixture 100 for door assembly also includes a seat support assembly 5. The seat support assembly 5 includes a snap-fit ​​block 51 and an abutment block 52. The snap-fit ​​block 51 is located at the lower end of the seat 1 and extends vertically. The lower end of the snap-fit ​​block 51 has a receiving groove, the sidewalls of which extend through both sides of the snap-fit ​​block 51 in the left-right direction, to accommodate the stop portion at the door mounting opening on the vehicle body. The abutment block 52 is located at the lower end of the seat 1 and extends vertically, spaced apart from the snap-fit ​​block 51, to abut against the stop portion at the door mounting opening on the vehicle body. Thus, during installation, the auxiliary positioning fixture 100 for door assembly can be limited and supported by the snap-fit ​​block 51 and the abutment block 52, facilitating subsequent positioning and installation, while also improving the load-bearing capacity of the seat 1.

[0063] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An auxiliary positioning tool for door assembly, characterized by, The application relates to an auxiliary positioning tool for assembling a vehicle door, which comprises the following parts. a seat body extending along the up-down direction and arranged to be mounted to the inner side of a door opening of a vehicle body; a seat body mounting structure comprising a hanging group and a clamping group arranged on the seat body and spaced along the up-down direction, the hanging group comprising a first hanging part and a second hanging part spaced along the left-right direction, the first hanging part and the second hanging part being arranged to be matched with two positioning holes of the vehicle body respectively, the clamping group comprising two clamping structures spaced along the left-right direction, the two clamping structures being arranged to be clamped to sheet metal at the periphery of the door opening of the vehicle body respectively; a door positioning structure comprising a movable positioning assembly and a fixed pin spaced along the left-right direction and a buckling plate extending along the up-down direction and arranged between the movable positioning assembly and the fixed pin, the movable positioning assembly and the fixed pin being arranged on the left and right sides of the seat body respectively and matched with two process holes of a vehicle door respectively, the buckling plate being rotatably arranged on the upper end of the seat body along an axis extending in the front-rear direction and capable of being rotated to be buckled with the upper end of the vehicle door or separated from the upper end of the vehicle door; the movable positioning assembly comprises: a mounting sleeve arranged on the left side of the seat body and extending along the front-rear direction, a return spring and a guide sleeve being sequentially arranged in the mounting sleeve along the front-rear direction, one end of the return spring being connected with the guide sleeve; a positioning pin comprising a matching section and a connecting section sequentially arranged along the front-rear direction, the matching section having a diameter larger than that of the connecting section, so that the matching section has a protrusion arranged outward relative to the connecting section, the connecting section sequentially penetrating the return spring and the guide sleeve along the front-rear direction, so that the protrusion can abut against the other end of the return spring; and a pull rod penetrating the guide sleeve and connected with the connecting section and capable of driving the positioning pin to partially retract under the action of external force. The auxiliary positioning tool for assembling the vehicle door further comprises a seat body supporting assembly, which comprises: a clamping block arranged on the lower end of the seat body and extending along the up-down direction, the lower end of the clamping block being provided with a receiving groove, the side wall of the receiving groove penetrating the two sides of the clamping block arranged along the left-right direction and arranged to receive a stop part at the door mounting opening of the vehicle body; and an abutting block arranged on the lower end of the seat body and extending along the up-down direction, the abutting block being arranged to abut against the stop part at the door mounting opening of the vehicle body. The hanging group comprises a first hanging assembly and a second hanging assembly spaced along the left-right direction, wherein:

2. The auxiliary positioning fixture for vehicle door assembly as recited in claim 1, wherein, the first hanging assembly comprises a mounting block, a first mounting arm and a first positioning column, the mounting block being mounted on the front side of the seat body, the first mounting arm being mounted on the upper end surface of the mounting block and extending along the left-right direction, so that the left end of the first mounting arm protrudes from the left end of the seat body, the first positioning column being arranged on the rear side of the left end of the first mounting arm; ​ The second hanging assembly comprises a fixed block, a second mounting arm and a second positioning column. The fixed block is mounted on the front side of the seat body. The second mounting arm is mounted on the right side of the fixed block and extends along the left-right direction, so that the right end of the second mounting arm protrudes from the right end of the seat body. The second positioning column is arranged on the back side of the right end of the second mounting arm. The first hanging part comprises the first positioning column. The second hanging part comprises the second positioning column.

3. The auxiliary positioning fixture for vehicle door assembly as recited in claim 2, wherein, The right side of the fixed block is provided with a plurality of first connecting holes arranged along the up-down direction. The second mounting arm comprises a first mounting section extending along the up-down direction and a second mounting section extending along the left-right direction. The first mounting section is provided with a second connecting hole extending along the left-right direction. The second connecting hole is selectively matched with one of the plurality of first connecting holes to allow a connecting member to pass through, so that the position of the first mounting section in the up-down direction can be adjusted. The second mounting section is provided with a plurality of third connecting holes extending along the up-down direction. The plurality of third connecting holes are arranged along the left-right direction. The second hanging assembly further comprises a connecting block extending along the left-right direction. The connecting block is provided with a fourth connecting hole extending along the up-down direction. The fourth connecting hole is selectively matched with one of the plurality of third connecting holes to allow a connecting member to pass through, so that the position of the connecting block in the up-down direction can be adjusted. The second positioning column is mounted on the back side of the connecting block and is adjustably arranged in the front-back direction.

4. The auxiliary positioning fixture for vehicle door assembly as recited in claim 3, wherein, The connecting block is provided with a mounting hole on both sides in the front-back direction. The second positioning column is partially arranged in the mounting hole to have a positioning section protruding from the back side of the connecting block. The right side of the connecting block is provided with a threaded connecting hole in communication with the mounting hole. The second hanging assembly further comprises a locking screw extending along the left-right direction. The screw end of the locking screw is threadedly matched with the threaded connecting hole and extends into the mounting hole to abut against the second positioning column to lock the second positioning column.

5. The auxiliary positioning fixture for vehicle door assembly as set forth in claim 1, wherein, Each of the clamping structures comprises: a baffle mounted on the front side of the seat body and extending along the left-right direction to partially protrude outside the seat body to abut against the outer side of the metal plate at the door opening of the vehicle body; and a abutting assembly comprising a connecting seat mounted on one side of the seat body arranged in the left-right direction and a limiting arm having a connecting end and a mounting end oppositely arranged along the left-right direction. The mounting end is provided with an abutting head. The connecting end is rotatably mounted on the connecting seat along an up-down axis, so that the abutting head can be rotated to abut against the inner side of the metal plate at the door opening of the vehicle body to be clamped and fixed together with the baffle on the metal plate at the door opening of the vehicle body.

6. The auxiliary positioning fixture for vehicle door assembly as set forth in claim 5, wherein, The abutting assembly further comprises: a push handle comprising a handle body extending along the front-back direction and two connecting arms arranged on the back side of the handle body and spaced apart along the up-down direction to form a containing gap. The two connecting arms are rotatably mounted on the connecting seat along an up-down axis. A linkage is arranged in the gap and extends in the left-right direction. One end of the linkage is rotatably connected to the two connecting arms along an axis extending in the up-down direction. The other end of the linkage is rotatably connected to the limiting arm along an axis extending in the up-down direction. A limiting block is arranged on the side of the linkage close to the abutting head. The limiting block is used to abut against the mounting end when the abutting head abuts against the inner side of the sheet metal at the door opening of the vehicle body, so as to lock the limiting arm.

7. The supplemental positioning fixture for vehicle door assembly of claim 1, wherein, The rear end of the pull rod is provided with a lap protrusion; The auxiliary positioning tool for assembling the vehicle door further comprises a pin pulling structure, and the pin pulling structure comprises: A lever is rotatably connected to the rear side of the seat body along an axis extending in the left-right direction; and A pin pulling block is arranged on the lower end of the lever and extends in the left-right direction. The upper end of the pin pulling block is provided with a clamping protrusion. The upper end surface of the clamping protrusion is provided with a clamping groove extending in the up-down direction. The side wall surface of the clamping groove is provided with two sides of the clamping protrusion arranged in the front-rear direction, so as to allow the pull rod to pass through.

8. The supplemental positioning fixture for vehicle door assembly of claim 1, wherein, The front side of the seat body is provided with two supporting blocks arranged in the left-right direction at intervals, so as to support the vehicle door.

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