Fastening assembly for aluminum alloy framework of new energy vehicle

Abstract

The utility model discloses a new energy vehicle aluminum alloy framework fastening assembly which comprises a first aluminum alloy framework, a second aluminum alloy framework, a third aluminum alloy framework, a screw rod and a supporting lock sleeve, and the supporting lock sleeve is of a T-shaped structure. Compared with a traditional connecting structure, the fastening assembly has the advantages that three parts are reduced to two parts, the top of the supporting lock sleeve is provided with the radial convex ribs which are matched with the clamping grooves in an embedded mode to achieve the anti-rotation effect, when the screw is screwed, a sleeve tool does not need to be used for limiting rotation of the supporting lock sleeve, and the purpose of convenient installation is achieved. Besides, the internal threads of the supporting lock sleeve are designed in a lengthened mode, the problem that the screw is loosened from the supporting lock sleeve in the using process can be solved, and compared with a high-cost hexagon nut with a nylon anti-loosening ring, the hexagon nut has the advantages of being low in using cost and good in anti-loosening effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of fasteners, and in particular relates to an aluminum alloy frame fastening assembly for a new energy vehicle. Background Art

[0002] At present, when the frame support of new energy vehicles is locked and connected, Figure 5 As shown, it includes a skeleton body 101, a bolt 104, a light hole sleeve 105 and a hexagonal nut 106. The bolt 104 slides through the top skeleton body 101, the light hole sleeve 105 and the hexagonal nut 106 to be locked and fixed. When tightening the bolt 104, it is necessary to use a tool to limit and fix the hexagonal nut 106. When the aluminum alloy skeleton support of a new energy vehicle with a small size structure is locked, it is not convenient to use a sleeve tool to limit and fix the hexagonal nut 106, resulting in installation difficulties. Even if it is convenient to use a sleeve tool to limit and fix the hexagonal nut 106, there is still a problem of single person simultaneously In order to solve the problem that it is difficult to restrict the hexagonal nut 106 and tighten the bolt 104 synchronously, and to prevent the bolt 104 and the hexagonal nut 106 from loosening during actual use, a nylon anti-loosening ring 107 is embedded and installed at the bottom of the hexagonal nut 106. The bolt 104 and the nylon anti-loosening ring 107 are in contact and squeezed to prevent them from loosening. In order to prevent the nylon anti-loosening ring 107 from falling out from the bottom of the hexagonal nut 106, a limiting body 1061 is added to the bottom of the hexagonal nut 106, resulting in a higher cost for the hexagonal nut 106 equipped with the nylon anti-loosening ring 107. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an aluminum alloy frame fastening assembly for new energy vehicles with low use cost, capable of being tightened by one person and having good anti-loosening performance.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: a new energy vehicle aluminum alloy frame fastening assembly, including a first aluminum alloy frame, a second aluminum alloy frame, a third aluminum alloy frame, a screw, and a support locking sleeve, the support locking sleeve is arranged as a T-shaped structure, the support locking sleeve is slidably installed in the second connecting hole of the second aluminum alloy frame, the first aluminum alloy frame has a first connecting hole, the screw is slidably installed in the first connecting hole and the support locking sleeve, the top surface of the support locking sleeve is provided with radial ribs in an annular array, the internal thread in the support locking sleeve extends to its upper and lower ends, the bottom surface of the first aluminum alloy frame is provided with a groove matching the radial rib in an annular array, and the radial rib is embedded in the groove.

[0005] Preferably, 8-20 radial ribs are arranged in a ring array.

[0006] Preferably, the top entrance of the support locking sleeve is arranged as an angled structure.

[0007] Preferably, the longitudinal section of the radial convex rib is configured as a trapezoidal structure with a smaller upper portion and a larger lower portion, and the top surface of the radial convex rib is configured as an arc surface structure.

[0008] Preferably, the screw is coated with a polyamide locking layer.

[0009] Preferably, the thread guide end of the screw is configured as an automatic guide thread structure.

[0010] Compared with the prior art, the utility model has the following advantages: compared with the traditional connection structure, the number of parts of the fastening assembly is reduced from three to two. A radial rib is provided on the top of the support lock sleeve to fit in with the slot to prevent rotation. When tightening the screw, there is no need to use a sleeve tool to limit the rotation of the support lock sleeve, thereby achieving the purpose of convenient installation. In addition, the internal thread of the support lock sleeve is lengthened to prevent the screw from loosening from the support lock sleeve during use. Compared with the high-cost hexagonal nut with a nylon anti-loosening ring, the utility model has the advantages of low cost and good anti-loosening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings.

[0012] Figure 1 It is a cross-sectional view of the utility model.

[0013] Figure 2 It is the front view of the utility model.

[0014] Figure 3 It is a stereogram of the utility model.

[0015] Figure 4 It is a three-dimensional diagram of the support lock sleeve.

[0016] Figure 5 It is a structural diagram of the prior art solution. DETAILED DESCRIPTION

[0017] The utility model is described in detail below in conjunction with specific implementation methods:

[0018] like Figures 1 to 4The shown new energy vehicle aluminum alloy frame fastening assembly comprises a first aluminum alloy frame 1, a second aluminum alloy frame 2, a third aluminum alloy frame 3, a screw 4, and a support locking sleeve 5. The support locking sleeve 5 is arranged as a T-shaped structure. The support locking sleeve 5 is slidably installed in the second connecting hole 21 of the second aluminum alloy frame 2. The first aluminum alloy frame 1 has a first connecting hole 11. The screw 4 is slidably installed in the first connecting hole 11 and the support locking sleeve 5. The top surface of the support locking sleeve 5 is provided with radial ribs 51 in an annular array. Compared with the traditional light hole sleeve, the internal thread in the support locking sleeve 5 extends to its upper and lower ends. The longer internal thread can achieve a better loosening effect. The bottom surface of the first aluminum alloy frame 1 is provided with a card groove matching the radial rib 51 in an annular array. The radial rib 51 is embedded in the card groove. The third aluminum alloy frame 3 is provided with a through hole 31 to facilitate the support locking sleeve 5 to pass through the third aluminum alloy frame 3 when installing.

[0019] The radial ribs 51 are arranged in a ring array and are 12 in number, so as to achieve a better anti-rotation limiting effect.

[0020] The top entrance of the support locking sleeve 5 is arranged as an oblique angle structure so that the screw rod 4 can be installed in the support locking sleeve 5 in a coordinated manner.

[0021] The longitudinal section of the radial rib 51 is set to a trapezoidal structure with a small upper part and a large lower part, and the top surface of the radial rib 51 is set to a circular arc surface structure, so that the radial rib 51 can be easily embedded and installed in the groove on the bottom surface of the first aluminum alloy frame 1.

[0022] The screw rod 4 is coated with a polyamide locking layer to increase the tightening force of the screw rod 4 and the supporting locking sleeve 5 after being threadedly installed to prevent loosening.

[0023] The threaded guide end of the screw rod 4 is set as an automatic guiding thread structure, which has the advantage of automatic thread introduction, and there is almost no requirement for the inclination of the screw rod 4 to the supporting locking sleeve 5 during installation, thus avoiding the problem of misaligned teeth when the axis of the traditional bolt and nut installation in the original design is tilted.

Claims

1. A new energy vehicle aluminum alloy frame fastening assembly, characterized in that: The invention comprises a first aluminum alloy frame (1), a second aluminum alloy frame (2), a third aluminum alloy frame (3), a screw (4), and a support locking sleeve (5); the support locking sleeve (5) is arranged in a T-shaped structure; the support locking sleeve (5) is slidably mounted in a second connection hole (21) of the second aluminum alloy frame (2); the first aluminum alloy frame (1) has a first connection hole (11); the screw (4) is slidably mounted in the first connection hole (11) and the support locking sleeve (5); radial convex ribs (51) are arranged in an annular array on the top surface of the support locking sleeve (5); the internal thread in the support locking sleeve (5) extends to the upper and lower ends thereof; and a clamping groove matching the radial convex rib (51) is arranged in an annular array on the bottom surface of the first aluminum alloy frame (1); the radial convex rib (51) is embedded in the clamping groove.

2. The aluminum alloy frame fastening assembly for new energy vehicles according to claim 1, characterized in that: The radial convex ribs (51) are arranged in an annular array, with 8 to 20 pieces.

3. The aluminum alloy frame fastening assembly for new energy vehicles according to claim 1, characterized in that: The top entrance of the support locking sleeve (5) is arranged as an oblique angle structure.

4. The aluminum alloy frame fastening assembly for new energy vehicles according to claim 1, characterized in that: The longitudinal section of the radial convex rib (51) is configured as a trapezoidal structure with a smaller top and a larger bottom, and the top surface of the radial convex rib (51) is configured as a circular arc surface structure.

5. The aluminum alloy frame fastening assembly for new energy vehicles according to claim 1, characterized in that: The screw (4) is coated with a polyamide locking layer.

6. The aluminum alloy frame fastening assembly for new energy vehicles according to claim 1, characterized in that: The thread guide end of the screw rod (4) is arranged as an automatic guide thread structure.

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