Injection-molded assembly connecting rod easy to disassemble

Abstract

The utility model relates to an injection-molded easily-detachable assembly connecting rod, which is structurally characterized in that one end of a locking driving rod is inserted with the head of a bolt, and a plastic bag shell is injection-molded and wrapped on the outer side of the joint of the locking driving rod and the bolt. Controllable torque locking is carried out through the plastic package shell, the plastic package shell is broken after a preset torque peak value is reached, the end of the locking driving rod is damaged, and an assembled assembly is not damaged, so that the safety function is achieved. The assembly connecting rod has the advantages that the assembly connecting rod which is formed through injection molding and easy to disassemble is formed, the whole assembly connecting rod is compact, simple and easy to fasten, controllable torque locking assembly is achieved, rapid and precise connection of connecting mechanism parts can be achieved, and the assembly connecting rod is suitable for high-temperature environment durability and assembly structural characteristics and particularly suitable for the requirements for high precision and high abrasion resistance. According to the method, the requirements of the assembly position relative shape limitation, the space complexity degree and the like can be met, the specific use requirements and the continuous effective torque locking connection of related parts can be met, and the assembled component can be protected to bear the connection of related connection areas.

Description

TECHNICAL FIELD

[0001] The utility model relates to an injection moulding's easy to dismantle assembly connecting rod, specifically relates to a kind of low-torque installation of automobile battery pack safety box end assembly connecting rod. BACKGROUND

[0002] In various kinds of precision contact fastening assembly process, such as the effective locking torque control of automobile electric control system, especially the automobile battery pack safety box end, battery protection device needs low-torque installation.However, in the prior art, in the case where the performance grade of product is defined during installation, there is an overload condition when the customer end is tightened due to high overall hardness, which has the risk of installation failure, leading to assembly scrap and increasing cost. SUMMARY

[0003] The utility model provides an injection moulding's easy to dismantle assembly connecting rod, which aims to overcome the above-mentioned deficiencies in the prior art and protect the assembly in scenarios requiring low-torque installation.

[0004] The technical solution of the utility model is an injection moulding's easy to dismantle assembly connecting rod, which includes a bolt, a locking drive rod and a plastic casing, wherein the locking drive rod is inserted into the head of the bolt at one end, and the plastic casing is injection moulded to wrap the outside of the connection between the locking drive rod and the bolt. The locking torque is controlled by the plastic casing, and the plastic casing breaks after reaching the preset torque peak, so that the end of the locking drive rod is not damaged, and the assembled components are not damaged, achieving the safety function.

[0005] Preferably, the head of the bolt is provided with a key-shaped drive groove, and the end of the locking drive rod is inserted into the key-shaped drive groove.

[0006] Preferably, the plastic casing includes a drive rod wrapping part and a bolt wrapping part which are integrally connected, the connection between the drive rod wrapping part and the bolt wrapping part is a recessed notch, the bolt wrapping part wraps the part above the bottom surface of the bolt head, and the drive rod wrapping part wraps the outside of the lower part of the locking drive rod to the connection with the bolt.

[0007] Preferably, the outer side of the locking drive rod in the middle of the drive rod wrapping part is provided with a step to prevent falling off.

[0008] The utility model discloses the advantages: reasonable structure design has formed the injection moulding easy dismounting subassembly connecting rod, and the whole is compact, simple, easy buckle is tight, has realized controllable torque locking assembly, can realize connecting mechanism class spare fast, accurate connection, is applicable to high temperature environment durability, assembly structure characteristics, especially suitable for high-precision, high wear resistance performance requirement, and assembly position relative shape restriction requirement, space complexity requirement etc., can satisfy the use specific demand and the related piece's continuous maintenance effective torque locking coupling, and can protect the assembled component to undertake the relevant connection area coupling. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the partial sectional view of the injection moulding easy dismounting subassembly connecting rod of the utility model.

[0010] Figure 2 It is the A-A direction sectional view of Figure 1 .

[0011] Figure 3 It is the B-B direction sectional view of Figure 1 . 2

[0012] Figure 4 It is the structure schematic view of the locking drive rod of Figure 1 . 2

[0013] 1 is bolt in the drawing, 11 is drive slot, 2 is locking drive rod, 21 is step, 3 is plastic sheath, 31 is drive rod wrapping part, 32 is bolt wrapping part, 33 is slot. DETAILED DESCRIPTION

[0014] The utility model will be further explained in detail in combination with embodiment and specific implementation.

[0015] As shown in Figures 1-4 , an injection moulding easy dismounting subassembly connecting rod, its structure includes bolt 1, locking drive rod 2 and plastic sheath 3, wherein locking drive rod 2 one end is inserted with bolt 1 head, and plastic sheath 3 injection moulding is wrapped in locking drive rod 2 and the outside of bolt 1 connecting place.

[0016] ​​Specifically, the head of bolt 1 is provided with a plum blossom-shaped drive groove 11. One end of the locking drive rod 2 is fitted with the plum blossom-shaped drive groove 11 and interlocked with it. The plastic housing 3 includes an integrally formed drive rod wrapping part 31 and a bolt wrapping part 32. The connection between the drive rod wrapping part 31 and the bolt wrapping part 32 is a recessed groove 33. That is, the outer diameter and thickness of the groove 33 are smaller than the outer diameter and thickness of the drive rod wrapping part 31 and the bolt wrapping part 32. The bolt wrapping part 32 wraps the part above the bottom surface of the head of bolt 1. The drive rod wrapping part 31 wraps the lower part of the locking drive rod 2 to the outside of the connection with bolt 1. The outer side of the locking drive rod 2 in the middle of the drive rod wrapping part 31 is provided with a step 21 to prevent it from falling off.

[0017] Based on the above structure, in actual production, bolt 1 is a high-strength metal bolt, and the locking drive rod 2 is also made of metal and is extended. The two are injection molded together to form a plastic shell 3 at the connection point. In the installation of the vehicle battery protection device or other suitable application scenarios, the bolt 1's screw is fitted and locked to the reserved internal thread of the vehicle body connector. The drive groove 11 at the head of bolt 1 is inserted into one end of the locking drive rod 2. Controllable torque locking is achieved through the plastic shell 3. After reaching its preset peak torque, the slot 33 at the tightening point breaks, realizing effective torque control. The damage to the end of the locking drive rod 2 does not damage the assembled component, thus achieving a safety function.

[0018] All of the components described above are existing technologies, and those skilled in the art can use any model and existing design that can achieve their corresponding functions.

[0019] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A detachable component connecting rod formed by injection molding, characterized in that, It includes a bolt (1), a locking drive rod (2) and a plastic housing (3), wherein one end of the locking drive rod (2) is inserted into the head of the bolt (1), and the plastic housing (3) is injection molded and wrapped around the outside of the connection between the locking drive rod (2) and the bolt (1).

2. The injection-molded, easily detachable component connecting rod as described in claim 1, characterized in that, The head of the bolt (1) is provided with a plum blossom-shaped drive groove (11), and one end of the locking drive rod (2) is matched with the plum blossom-shaped drive groove (11) and inserted into each other.

3. The injection-molded, easily detachable component connecting rod as described in claim 1, characterized in that, The plastic housing (3) includes an integrally formed drive rod wrapping part (31) and a bolt wrapping part (32). The connection between the drive rod wrapping part (31) and the bolt wrapping part (32) is a recessed groove (33). The bolt wrapping part (32) wraps the part above the bottom surface of the bolt head (1). The drive rod wrapping part (31) wraps the lower part of the locking drive rod (2) to the outside of the connection with the bolt (1).

4. The injection-molded, easily detachable component connecting rod as described in claim 3, characterized in that, The outer side of the locking drive rod (2) in the middle of the drive rod wrapping part (31) is provided with a step (21).

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