Detachable and reusable assembly pre-hanging device and method of use thereof

Abstract

The application discloses a detachable and multipurpose assembly pre-hanging device and a use method thereof. The device comprises a ratchet springback assembly, including an upper guide rail sleeve, a toothed rod, a toothed rod button, a lower guide rail sleeve and a spring. The upper guide rail sleeve and the lower guide rail sleeve are connected through threads, the toothed rod is arranged in the upper guide rail sleeve and the lower guide rail sleeve, the toothed rod is provided with inclined teeth, and the toothed rod button is provided with a notch and a sawtooth-shaped edge at the end. The device further comprises an adjustable limiting structure assembly, including a top rod, a flange sleeve, a movable limiting block and a leather ring. The movable limiting block is rotatably arranged at the lower end of the lower guide rail sleeve, the leather ring is arranged in the groove of the movable limiting block, and the movable limiting block is provided with a retraction force after expansion. The flange sleeve is connected with the lower guide rail sleeve through threads. Through the cooperation of the ratchet springback structure and the adjustable limiting structure, the device can realize the rapid pre-assembly of assembly objects, and has the advantages of simple installation and disassembly and reusability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle assembly manufacturing, in particular to a detachable and reusable assembly pre-hanging device and a use method thereof. BACKGROUND

[0002] The assembly of an automobile product is one of the most important process links in the manufacturing process of the automobile product. With the increasing requirement of automobile platformization, more and more parts need to be considered when being arranged, that is, a large number of vehicle models in the platform, how to arrange the parts for a single vehicle model while taking into account the platform architecture, to meet the requirements of assembly process, modeling, performance, safety and other needs, and to improve the product competitiveness is always one of the difficulties in design.

[0003] At present, when facing the assembly problem of parts with large weight or complex assembly path in the design stage of the automobile, a pre-hanging structure is usually designed on the fixed part, and the pre-hanging structure is used for preliminary fixation during assembly of workers, and then subsequent assembly is carried out. This scheme has fixed structure form, occupies the design space of the whole vehicle, increases the cost of the whole vehicle, and the pre-hanging structure design is more limited due to the difference in arrangement scheme of different vehicle models under the same platform, which often causes design redundancy problem. SUMMARY

[0004] In view of the problems existing in the prior art, the present application provides a detachable and reusable assembly pre-hanging device and a use method thereof. Through the cooperation of the ratchet springback structure and the adjustable limiting structure, the assembly article is quickly pre-assembled, and has the advantages of simple installation and disassembly and reusability.

[0005] The technical scheme of the present application is as follows:

[0006] In the first aspect of the present application, a detachable and reusable assembly pre-hanging device is provided, comprising:

[0007] A ratchet springback assembly includes an upper guide rail sleeve, a toothed rod, a toothed rod button, a lower guide rail sleeve and a spring. The upper guide rail sleeve and the lower guide rail sleeve are connected by threads, the toothed rod is placed in the upper guide rail sleeve and the lower guide rail sleeve, the toothed rod is provided with an inclined tooth, and the toothed rod button is provided with a notch and a sawtooth edge at the end. The inclined tooth, the notch and the sawtooth edge cooperate to eject or recycle the toothed rod.

[0008] An adjustable limiting structure assembly includes an adjustable limiting structure assembly, including a top rod, a flange sleeve, a movable limiting block and a leather ring. The movable limiting block is rotatably installed at the lower end of the lower guide rail sleeve, the leather ring is installed in the slot of the movable limiting block to provide the expansion and retraction force of the movable limiting block, and the flange sleeve is connected with the lower guide rail sleeve by threads.

[0009] In some embodiments of the present application, the inner wall of the upper guide rail sleeve is provided with a guide rail which cooperates with the notch on the toothed rod button, and the toothed rod button moves linearly in the upper guide rail sleeve.

[0010] In some embodiments of the present application, the edge of the guide rail is serrated, and the edge of the guide rail, the inclined teeth on the toothed rod and the serrated edge of the toothed rod button cooperate with each other to convert the linear movement of the toothed rod into rotary movement.

[0011] In some embodiments of the present application, the lower end of the lower guide rail sleeve is provided with a thread, and the upper end thread cooperates with the upper guide rail sleeve and the lower end thread cooperates with the flange sleeve.

[0012] In some embodiments of the present application, the lower end of the lower guide rail sleeve is fixedly connected with a fixed sleeve, and the fixed sleeve extends from the end of the flange sleeve after the lower guide rail sleeve is connected with the flange sleeve.

[0013] In some embodiments of the present application, the fixed sleeve is provided with three through holes, and each through hole is provided with an active limiting block, and the active limiting block is rotatably connected with the through hole of the fixed sleeve through a hinge.

[0014] In some embodiments of the present application, one end of the ejector rod is tapered, and the other end is provided with a limiting ring, the outer circumference of the limiting ring is serrated, one side of the limiting ring abuts against a spring, and the other side abuts against the lower end of the toothed rod.

[0015] In some embodiments of the present application, the active limiting block is provided with an ejector rod contact matching surface and a rubber ring installation groove, the ejector rod contact matching surface matches the tapered surface of the end of the ejector rod, and the rubber ring installation groove is provided with a rubber ring.

[0016] In some embodiments of the present application, the inner wall surface of the lower guide rail sleeve is provided with a sliding groove which matches the serrated outer circumference of the limiting ring.

[0017] In the second aspect of the present application, a use method of a detachable and reusable assembly pre-hanging device is provided, comprising:

[0018] The lower end of the lower guide rail sleeve is inserted through the installation hole of the fixed metal plate and the component to be assembled;

[0019] The toothed rod button is pressed, the toothed rod ejects the ejector rod, and the tapered surface of the ejector rod ejects the active limiting block from the lower guide rail sleeve;

[0020] The flange sleeve is rotated to clamp the fixed metal plate and the component to be assembled by the flange sleeve and the active limiting block;

[0021] After the assembly part is installed, the tooth rod button is pressed again, the jack rod is retracted under the elastic force of the spring, and the movable limiting block is rotated and retracted under the action of the rubber ring.

[0022] The one or more technical solutions of the present application have the following beneficial effects:

[0023] (1) The ratchet springback structure provided in the present application can quickly switch the jack rod between the ejection and recovery states, and the adjustable limiting structure can realize the limiting and fastening between the fixed metal plate and the component to be installed, thereby realizing the quick pre-assembly of the assembled article.

[0024] (2) The above structure can realize the quick disassembly and repeated use of the present application. When workers assemble, the device can be used to quickly pre-assemble the assembled article, greatly saving manpower. At the same time, the structure can be widely used as a standard kit in the workshop. The expansion radius range of the movable limiting block is the outer circular arc radius of the movable limiting block. Within the thread type number above M4, it fully meets the via hole matching requirements. The use of the present application can provide a new design idea for optimizing the whole vehicle platform design scheme, taking into account the pre-hanging structure redundancy and complexity problems caused by vehicle differentiation, enabling product cost reduction, and improving product power. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic view of the disassembled parts of the detachable and reusable assembly pre-hanging device of the present application.

[0026] Figure 2 is a schematic view of the disassembled parts of the ratchet springback assembly of the present application.

[0027] Figure 3 is a sectional view of the upper guide rail sleeve of the present application.

[0028] Figure 4 is a schematic view of the assembled tooth rod and tooth rod button of the present application.

[0029] Figure 5 is a sectional view of the assembled ratchet springback assembly of the present application.

[0030] Figure 6 is a schematic view of the disassembled parts of the adjustable limiting structure assembly of the present application.

[0031] Figure 7 is a schematic view of the structure of the movable limiting block of the present application.

[0032] Figure 8 is a schematic view of the contraction state and expansion state of the movable limiting block of the present application.

[0033] Figure 9A sectional view of the detachable and multipurpose assembly pre-hanging device after assembly of the present application;

[0034] Figure 10 A schematic view of the pre-hanging device before and after installation of the present application.

[0035] In the figure:

[0036] 1, ratchet spring assembly; 11, upper guide rail sleeve; 111, guide rail; 112, guide rail edge; 113, thread; 12, toothed rod; 121, bevel gear; 13, toothed rod button; 131, sawtooth edge; 132, notch; 14, lower guide rail sleeve; 141, sliding groove; 142, through hole; 143, fixing sleeve; 144, upper end thread; 145, lower end thread; 15, spring;

[0037] 2, adjustable limit structure assembly; 21, top rod; 211, limit ring; 22, movable limit block; 221, hinge mounting hole; 222, top rod contact matching surface; 223, belt installation groove; 23, hinge; 24, belt; 25, flange sleeve;

[0038] 3, fixed sheet metal; 4, component to be assembled. DETAILED DESCRIPTION

[0039] The present application will be further described below in conjunction with the drawings and examples.

[0040] Example 1

[0041] In a typical embodiment of the present application, a detachable and multipurpose assembly pre-hanging device is proposed, as shown in Figures 1-6 In combination Figure 9 As shown, it comprises:

[0042] The ratchet spring assembly 1 comprises an upper guide rail sleeve 11, a toothed rod 12, a toothed rod button 13, a lower guide rail sleeve 14, and a spring 15; the upper guide rail sleeve 11 and the lower guide rail sleeve 14 are connected by a thread 113, the toothed rod 12 is placed in the upper guide rail sleeve 11 and the lower guide rail sleeve 14, the toothed rod 12 is provided with bevel gears 121, the toothed rod button 13 is provided with a notch 132 and a sawtooth edge 131 at the end; the bevel gears 121, the notch 132, and the sawtooth edge 131 cooperate to eject or recover the toothed rod 12;

[0043] The adjustable limit structure assembly 2 comprises a top rod 21, a flange sleeve 25, a movable limit block 22, and a belt 24; the movable limit block 22 is rotatably installed at the lower end of the lower guide rail sleeve 14, the belt 24 is installed in the groove of the movable limit block to provide the retracting force of the expanded movable limit block, and the flange sleeve 25 is connected to the lower guide rail sleeve 14 by a thread.

[0044] AsFigure 3 As shown, the inner wall of the upper guide rail sleeve 11 is provided with a guide rail 111, which cooperates with the notches 132 on the rack button 13, and the rack button 13 moves linearly in the upper guide rail sleeve 11. Further, the guide rail edge 112 is serrated, and the serrated edge 112, the inclined teeth 121 on the rack 12, and the serrated edge 131 of the rack button 13 cooperate with each other to convert the linear motion of the rack 12 into rotary motion.

[0045] Specifically, the rack button 13 has eight notches 132 on the side, and the rack button 13 only moves linearly in the upper guide rail sleeve 11. The end of the rack button 13 has a serrated edge 131, and the rack 12 has only four inclined teeth, which are in the same direction, and can convert the linear motion of the rack 12 into rotary motion. The guide rail structure in the upper guide rail sleeve 11 makes the notches 132 on the rack button 13 move linearly in the guide rail 111, and the four inclined teeth of the rack 12 slide up and down on the serrated edge 131.

[0046] In this embodiment, the lower guide rail sleeve 14 is provided with threads at both ends, and the upper end thread 144 is connected with the upper guide rail sleeve 11, and the lower end thread 145 is connected with the flange sleeve 25.

[0047] Further, the lower end of the lower guide rail sleeve 14 is fixedly connected with a fixed sleeve 143, which extends from the end of the flange sleeve 25 after the lower guide rail sleeve 14 is connected with the flange sleeve 25. The diameter of the fixed sleeve 143 is smaller than that of the lower guide rail sleeve 14, and the position where the fixed sleeve 143 and the guide rail sleeve 14 are connected forms a tapered surface, which abuts against one end of the spring 15. The spring provides resistance to the pressure of the rack button 13, so that the top rod 21 and the rack 12 can rebound. The top rod 21 and the rack 12 are in contact and cooperate with each other, and there is linear motion and rotary motion around the axis between them.

[0048] Further, the fixed sleeve 143 is provided with three through holes 142, and one movable limiting block 22 is installed at each through hole 142. The movable limiting block 22 is rotatably connected with the through hole position on the fixed sleeve 143 through the hinge 23.

[0049] In this embodiment, one end of the top rod 21 is tapered, and the other end is provided with a limiting ring 211, and the outer circumference of the limiting ring 211 is serrated. One side of the limiting ring 211 abuts against the spring 15, and the other side abuts against the lower end of the rack 12.

[0050] Further, as shown in FIG. 6, the top rod 21 is provided with a limiting ring 211, and the outer circumference of the limiting ring 211 is serrated. One side of the limiting ring 211 abuts against the spring 15, and the other side abuts against the lower end of the rack 12. Figure 7As shown, the movable limiting block 22 is provided with a top rod contact matching surface 222 and a rubber ring installation groove 223, the top rod contact matching surface 222 matches the tapered surface of the end of the top rod 21, and the rubber ring installation groove 223 is used to install the rubber ring 24. The movable limiting block 22 is also provided with a hinge installation hole 221 for installing the hinge 23, which can realize the rotary motion of the movable limiting block 22. The top rod contact matching surface 222 is provided as the main force surface when the top rod 21 is ejected, and the tapered limiting surface is formed between the installed movable limiting blocks 22. Through the tapered structure of the limiting surface, the axial linear motion of the top rod 21 can be converted into the rotary outward expansion motion of the movable limiting block 22, so as to realize the expansion of the limiting surface. The rubber ring installation groove 223 is provided, so that the rubber ring 24 can be installed in the rubber ring installation groove 223. When the top rod 21 is retracted, the rubber ring provides resistance to the expansion pressure of the movable limiting block, so that the movable limiting block can be retracted, and the limiting surface can be contracted. Figure 8 As shown.

[0051] Further, the inner wall surface of the lower guide rail sleeve 14 is provided with a sliding groove 141, which matches the serrated outer circumference of the limiting ring 211, so that the top rod only performs linear motion. Specifically, the serrated outer circumference of the limiting ring 211 is provided with eight notches, and the top rod 21 only performs linear motion in the lower guide rail sleeve 14. The lower end of the toothed rod 12 is a hollow structure, the limiting ring 211 is spaced apart from the upper end of the top rod 21 by a certain distance, so that the upper end of the top rod 21 is located in the lower end of the toothed rod 12, the limiting ring 211 abuts against the lower end of the toothed rod 12, and the top rod 21 is in contact with the toothed rod 12.

[0052] The working principle of the detachable and reusable assembly pre-hanging device provided by the embodiment is as follows:

[0053] In the initial state, the tooth tip of the toothed rod 12 is located inside the guide rail 111. The toothed rod 12 enters the compression stage along with the toothed rod button 13 when the toothed rod button 13 is pressed for the first time. When the toothed rod 12 slides to the end of the guide rail 111 of the upper guide rail sleeve 11, the toothed rod button 13 is released. One end of the spring 15 is in contact with the tapered surface of the lower guide rail sleeve 14, and the other end is in contact with the limiting ring on the top rod 21. Under the elastic force of the spring, the spring is compressed and rebounded. The elastic force is transmitted from the top rod 21 to the toothed rod 12, so that the toothed rod 12 is in contact with the guide rail edge 112 and rotates by a certain angle. The toothed rod 12 rebounds into the shallower guide rail edge 112, so that the rebound of the toothed rod 12 is not so long, and the toothed rod 12 is in the ejection state.

[0054] The toothed rod 12 is pressed for the second time. The tooth tip of the toothed rod 12 is rotated to the inside of the guide rail 111. When the toothed rod button 13 is released, the toothed rod 12 returns to the initial position and is in the retraction state.

[0055] When the rack 12 is in the ejected state, the push rod 21 is also in the ejected state. The conical structure of the push rod 21 will open the movable limiting block 22. The movable limiting block 22 rotates around the axis of the connecting hinge 23, and the rubber ring 24 expands under force, increasing the installation limiting surface. The flange sleeve 25 is threadedly connected to the lower guide rail sleeve 14. By rotating the flange sleeve 25, the gap between the flange sleeve 25 and the movable limiting block can be adjusted to realize the installation of the pre-hanging device.

[0056] Pressing the rack button 13 a second time will retract the push rod 21, causing the rubber ring 24 to spring back and the movable limit block 22 to compress, retracting synchronously with the push rod 21 into the lower guide sleeve 14. After adjusting the flange sleeve 25, the pre-attached tool can be removed.

[0057] Example 2

[0058] In a typical embodiment of the present invention, a method for using a detachable and reusable pre-attached assembly device is provided, such as... Figure 10 As shown, it includes:

[0059] The lower end of the lower guide sleeve 14 is passed through the mounting holes on the fixed sheet metal 3 and the component 4 to be assembled.

[0060] Press the rack button 13, and the rack 12 will push the push rod 21 out, using the conical surface of the push rod 21 to push the movable limit block 22 out from the lower guide sleeve 14;

[0061] Rotate flange sleeve 25, and use flange sleeve 25 and movable limit block 22 to clamp the fixed sheet metal 3 and the part 4 to be assembled;

[0062] After the assembly components are installed, press the rack button 13 again. Under the elastic force of the spring 15, the push rod 21 retracts, and at the same time, under the action of the leather ring 24, the movable limit block 22 rotates and retracts.

[0063] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A detachable and reusable assembly pre-hanging device, characterized in that, The utility model relates to a kind of adjustable limit structure and ratchet spring-back assembly, including top rail sleeve, rack bar, rack bar button, lower rail sleeve and spring;The upper rail sleeve and lower rail sleeve are connected by thread, the rack bar is placed in the upper rail sleeve and lower rail sleeve, the rack bar is provided with inclined tooth, the rack bar button is provided with notch and is provided with sawtooth edge at end;The inclined tooth, notch and sawtooth edge cooperate, and rack bar is ejected or recycled; Adjustable limit structure assembly, including top rod, flange sleeve, movable limit block and leather ring;The movable limit block is rotatably installed at the lower end of the lower rail sleeve, and the leather ring is installed in the groove of the movable limit block to provide the retracting force of the expanded movable limit block, and the flange sleeve is connected with the lower rail sleeve by thread; The lower end of the lower rail sleeve is fixedly connected with a fixed sleeve, and the fixed sleeve extends from the end of the flange sleeve after the lower rail sleeve is connected with the flange sleeve; Three through holes are provided on the fixed sleeve, and one movable limit block is installed at each through hole, and the movable limit block is rotatably connected with the through hole on the fixed sleeve by a hinge; One end of the top rod is conical, and the other end is provided with a limiting ring, the outer circumference of the limiting ring is sawtooth-shaped, one side of the limiting ring abuts against the other end of the spring, and the other side abuts against the lower end of the rack bar; The top rod and the rack bar are in contact and cooperation, and there is linear motion and rotational motion around the axis between them; A top rod contact matching surface and a leather ring installation groove are provided on the movable limit block, the top rod contact matching surface matches the conical surface at the end of the top rod, and the leather ring is installed in the leather ring installation groove; 2. The detachable and reusable assembly pre-hanging device according to claim 1, wherein, A guide rail is provided on the inner wall of the upper rail sleeve, the guide rail cooperates with the notch on the rack bar button, and the rack bar button moves linearly in the upper rail sleeve.

3. The detachable and reusable assembly pre-hanging device according to claim 2, wherein, The edge of the guide rail is sawtooth-shaped, and the edge of the guide rail, the inclined tooth on the rack bar and the sawtooth edge of the rack bar button cooperate with each other to convert the linear motion of the rack bar into rotational motion.

4. The detachable and reusable assembly pre-hanging device according to claim 1, wherein, Threaded holes are provided at both ends of the lower rail sleeve, the upper end threaded hole is connected with the upper rail sleeve, and the lower end threaded hole is connected with the flange sleeve.

5. The detachable and reusable assembly pre-hanging device according to claim 1, wherein, A sliding groove is provided on the inner wall surface of the lower rail sleeve, and the sliding groove matches the sawtooth-shaped outer circumference of the limiting ring.

6. A method of using the detachable and reusable assembly pre-hanging device according to any one of claims 1-5, characterized in that, The utility model relates to a kind of adjustable limit structure and ratchet spring-back assembly, including top rail sleeve, rack bar, rack bar button, lower rail sleeve and spring;The upper rail sleeve and lower rail sleeve are connected by thread, the rack bar is placed in the upper rail sleeve and lower rail sleeve, the rack bar is provided with inclined tooth, the rack bar button is provided with notch and is provided with sawtooth edge at end;The inclined tooth, notch and sawtooth edge cooperate, and rack bar is ejected or recycled; Adjustable limit structure assembly, including top rod, flange sleeve, movable limit block and leather ring;The movable limit block is rotatably installed at the lower end of the lower rail sleeve, and the leather ring is installed in the groove of the movable limit block to provide the retracting force of the expanded movable limit block, and the flange sleeve is connected with the lower rail sleeve by thread; The lower end of the lower rail sleeve is fixedly connected with a fixed sleeve, and the fixed sleeve extends from the end of the flange sleeve after the lower rail sleeve is connected with the flange sleeve; Three through holes are provided on the fixed sleeve, and one movable limit block is installed at each through hole, and the movable limit block is rotatably connected with the through hole on the fixed sleeve by a hinge; One end of the top rod is conical, and the other end is provided with a limiting ring, the outer circumference of the limiting ring is sawtooth-shaped, one side of the limiting ring abuts against the other end of the spring, and the other side abuts against the lower end of the rack bar; The top rod and the rack bar are in contact and cooperation, and there is linear motion and rotational motion around the axis between them; A top rod contact matching surface and a leather ring installation groove are provided on the movable limit block, the top rod contact matching surface matches the conical surface at the end of the top rod, and the leather ring is installed in the leather ring installation groove; A guide rail is provided on the inner wall of the upper rail sleeve, the guide rail cooperates with the notch on the rack bar button, and the rack bar button moves linearly in the upper rail sleeve. The edge of the guide rail is sawtooth-shaped, and the edge of the guide rail, the inclined tooth on the rack bar and the sawtooth edge of the rack bar button cooperate with each other to convert the linear motion of the rack bar into rotational motion. Threaded holes are provided at both ends of the lower rail sleeve, the upper end threaded hole is connected with the upper rail sleeve, and the lower end threaded hole is connected with the flange sleeve. A sliding groove is provided on the inner wall surface of the lower rail sleeve, and the sliding groove matches the sawtooth-shaped outer circumference of the limiting ring. Including: Pass the lower end of the lower rail sleeve through the mounting hole of the fixed metal plate and the component to be assembled; Press the rack bar button, the rack bar ejects the top rod, and the conical surface of the top rod ejects the movable limit block from the lower rail sleeve; Rotate the flange sleeve to clamp the fixed metal plate and the component to be assembled by the flange sleeve and the movable limit block; After the assembly of the component is completed, press the rack bar button again, and the top rod is retracted under the elastic force of the spring, and the movable limit block rotates and shrinks under the action of the leather ring.

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