Safety fixing assembly and high-voltage control device
By designing the partition structure of functional screws and nuts, the plastic deformation and loosening problems when the high-pressure box is connected to the wire harness are solved, and the stable connection between the high-pressure box and the wire harness is achieved, which improves safety and torque resistance.
Patent Information
- Application Number
- CN202422233478.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-11
AI Technical Summary
When the existing high-voltage box is connected to the wiring harness, the plastic material is soft, which can easily cause the wiring harness terminals to deform and sink, the nut torque is attenuated and loose, and there is a risk of thermal runaway and short-circuit combustion.
The design of functional screws and functional nuts is adopted, and the contact between the wiring harness and the high-voltage box is blocked through the first partition surface and the second partition surface, and rigid conductive material is used to increase the pulling force and torque resistance of the screws to prevent the wiring harness from heating and the nut from loosening.
It improves the safety of the connection between the high-voltage box and the wiring harness, avoids the risk of thermal runaway caused by the wiring harness heating and the loosening of the nut, and enhances the stability and safety of the connection.
Smart Images
Figure CN223194012U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of new energy storage equipment, in particular to a safety fixing component and a high-voltage control device. Background Art
[0002] When the high-voltage box is connected and fixed to the wiring harness, ordinary hexagonal or knurled screws are usually used to fix them in the high-voltage box through an injection molding process. The wiring harness is connected and fixed inside the high-voltage box by tightening with nuts. When the wiring harness is connected and fixed, it directly contacts the high-voltage box. The material of the high-voltage box is plastic. The structural strength of the plastic is weak. The plastic itself is soft and has low hardness. When the wiring harness is fixed, the tightening torque of the nuts and screws will cause the wiring harness terminals to deform and sink into the plastic, while causing the nut torque to decay and the nut to loosen, resulting in failure of the high-voltage wiring harness connection and loosening, increased contact resistance, increased heat generation and the risk of thermal runaway. At the same time, the heat generated when the high-voltage box is working can easily cause the plastic to melt and deform. In addition, when the wiring harness is tightened and torqued by nuts and screws, ordinary hexagonal or knurled screws can easily fall off from the high-voltage box, resulting in failure of the connection and fixation, and there is a risk of short circuit and combustion. Utility Model Content
[0003] The technical problem to be solved by the utility model is how to improve the safety when the high-voltage box and the wiring harness are connected and fixed.
[0004] The utility model solves the above technical problems through the following technical means:
[0005] A safety fixing assembly comprises a functional screw (4) and a functional nut (5); the functional screw (4) comprises a first embedded column (41), a second embedded column (42), a first spacer surface (43), and a screw rod (44); the first embedded column (41), the second embedded column (42), the first spacer surface (43), and the screw rod (44) are arranged in sequence and concentrically; the diameter of the first spacer surface (43) is greater than the diameter of the first embedded column (41); the diameter of the first embedded column (41) is greater than the diameter of the second embedded column (42); the functional nut (5) comprises a second spacer surface (51) and a nut (52); the diameter of the second spacer surface (51) is greater than the diameter of the nut (52); the second spacer surface (51) and the nut (52) are threadedly connected to the screw rod (44); the second spacer surface (51) is arranged close to the first spacer surface (43).
[0006] Beneficial effects: Through the mutual cooperation of the functional screws and functional nuts; the setting of the second partition surface and the first partition surface, on the one hand, the high-voltage box and the wiring harness are separated when they are fixed, preventing the wiring harness from heating up and causing the high-voltage box to deform; on the other hand, the first partition surface and the second partition surface are in hard contact with the wiring harness terminal and cannot sink into the plastic, thereby ensuring that the nut torque does not decay and the nut does not loosen, which can avoid the risk of thermal runaway caused by increased heating of the wiring harness; the setting that the diameter of the first embedded column is larger than the diameter of the second embedded column effectively improves the pulling force and torsional resistance of the functional screw after fixation, so that the functional screw will not rotate inside the high-voltage box, thereby improving safety.
[0007] Furthermore, a second embedded column (42) is fixed to the top of the first embedded column (41), a first partition surface (43) is fixed to the top of the second embedded column (42), and a screw (44) is fixed to the middle of the top of the first partition surface (43).
[0008] Furthermore, the diameter difference between the first partition surface (43) and the first embedded column (41) is 4-6 mm.
[0009] Furthermore, the diameters of the first embedded pillar (41) and the second embedded pillar (42) differ by 2-3 mm.
[0010] Furthermore, the diameter of the second embedded column (42) is consistent with the diameter of the screw (44).
[0011] Furthermore, a plurality of vertical grooves (411) are provided on the first embedded column (41).
[0012] Furthermore, the second embedded column (42) is provided with a plurality of axial grooves.
[0013] Beneficial effect: By setting the vertical grooves and the axial grooves, the pull-out force and the torsional resistance of the functional screw after being fixed are further improved, so that the functional screw will not rotate inside the high-voltage box.
[0014] Furthermore, the functional screw (4) and the functional nut (5) are both made of rigid conductive material.
[0015] The utility model also discloses a high-voltage control device comprising the safety fixing assembly described in any of the above technical solutions, further comprising a high-voltage box (1), a first wiring harness (2), and a second wiring harness (3); the high-voltage box (1) is provided with at least one mounting groove (11); a functional screw (4) is fixed in the mounting groove (11); the first wiring harness (2) and the second wiring harness (3) are both sleeved on the screw rod (44); the functional nut (5) and the screw rod (44) are fastened by threads to fix the first wiring harness (2) and the second wiring harness (3).
[0016] Beneficial effect: By setting the safety fixing component, the safety of the high-voltage box and the wiring harness when connected and fixed is improved.
[0017] Furthermore, a functional screw (4) is fixed in the installation groove (11) by injection molding. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a three-dimensional diagram of a high-voltage control device according to a first embodiment of the present invention;
[0019] Figure 2 This is a partial enlarged view of the high-voltage control device of Example 1 of the present utility model;
[0020] Figure 3 This is a three-dimensional diagram of a functional screw in a high-pressure control device according to a first embodiment of the present utility model. DETAILED DESCRIPTION
[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.
[0022] Example 1
[0023] like Figure 1 As shown, this embodiment provides a high-voltage control device, including a high-voltage box 1, a first wire harness 2, a second wire harness 3, and a safety fixing assembly.
[0024] like Figure 1 、 Figure 2 、 Figure 3As shown, the safety fixing component includes a functional screw 4 and a functional nut 5. At least one mounting groove 11 is provided on the high-voltage box 1. In this embodiment, two mounting grooves 11 are provided on the high-voltage box 1. The functional screw 4 is fixed in the mounting groove 11. In this embodiment, the functional screw 4 is fixed in the mounting groove 11 by injection molding. The functional screw 4 includes a first embedded column 41, a second embedded column 42, a first partition surface 43, and a screw 44. The top of the first embedded column 41 is fixed with the second embedded column 42, the top of the second embedded column 42 is fixed with the first partition surface 43, and the middle of the top of the first partition surface 43 is fixed with a screw 44. The first embedded column 41, the second embedded column 42, the first partition surface 43 , the screw 44 is concentrically arranged, the diameter of the first partition surface 43 is larger than the diameter of the first embedded column 41, the diameter difference is 4-6 mm, the diameter of the first embedded column 41 is larger than the diameter of the second embedded column 42, the diameter difference is 2-3 mm, the diameter of the second embedded column 42 is consistent with the diameter of the screw 44, the first embedded column 41 is provided with a plurality of vertical grooves 411, the depth of the vertical grooves 411 is 0.8-1.2 mm, the vertical grooves 411 and the diameter of the first embedded column 41 are larger than the diameter of the second embedded column 42, which effectively improves the pulling force and torsional resistance of the functional screw 4 after injection molding, so that the functional screw 4 will not rotate inside the high-pressure box 1, thereby improving safety; optional The second embedded column 42 is provided with a plurality of axial grooves (not shown), the depth of the axial grooves is 0.8-1.2 mm, and the setting of the axial grooves can further improve the pull-out force and torsional resistance of the functional screw 4 after injection molding; the functional screw 4 is made of a rigid conductive material, preferably carbon steel; the first embedded column 41, the second embedded column 42, and the first partition surface 43 are injection-molded and fixed in the mounting groove 11, the upper surface of the first partition surface 43 is exposed, the first wiring harness 2 and the second wiring harness 3 are both sleeved on the screw 44, and the functional nut 5 and the screw 44 are threadedly fastened to fix the first wiring harness 2 and the second wiring harness 3; the functional nut 5 includes a second partition surface 51, a nut 52, and a second The diameter of the partition surface 51 is larger than the diameter of the nut 52. A nut 52 is fixed in the middle of the top of the second partition surface 51. The middle parts of the second partition surface 51 and the nut 52 are both threaded hollow settings. The functional nut 5 is made of rigid conductive material, preferably carbon steel. The first wiring harness 2 and the second wiring harness 3 are located between the first partition surface 43 and the second partition surface 51. On the one hand, the high-voltage box 1 is separated from the wiring harness when it is fixed to prevent the wiring harness from heating up and causing the high-voltage box 1 to deform. On the other hand, the first partition surface 43 and the second partition surface 51 are in hard contact, and the wiring harness terminal cannot sink into the plastic, thereby ensuring that the nut torque does not decay and the nut does not loosen, which can avoid the risk of thermal runaway caused by increased heating of the wiring harness.
[0025] During use, the first embedded column 41, the second embedded column 42, and the first partition surface 43 are injection-molded and fixed into the mounting groove 11, and then the first wiring harness 2 and the second wiring harness 3 are sequentially sleeved on the screw 44, and then threadedly fastened with the functional nut 5 and the screw 44, so that the first wiring harness 2 and the second wiring harness 3 are fixed between the first partition surface 43 and the second partition surface 51.
[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. A safety fixing assembly, characterized in that: It includes a functional screw (4) and a functional nut (5); The functional screw (4) includes a first embedded column (41), a second embedded column (42), a first spacer surface (43), and a screw rod (44). The first embedded column (41), the second embedded column (42), the first spacer surface (43), and the screw rod (44) are arranged in sequence and concentrically. The diameter of the first spacer surface (43) is larger than the diameter of the first embedded column (41), and the diameter of the first embedded column (41) is larger than the diameter of the second embedded column (42). The functional nut (5) includes a second spacer surface (51) and a nut (52). The diameter of the second spacer surface (51) is larger than the diameter of the nut (52). The second spacer surface (51) and the nut (52) are threadedly connected to the screw rod (44), and the second spacer surface (51) is arranged close to the first spacer surface (43).
2. A safety fixing assembly according to claim 1, characterized in that: A second embedded column (42) is fixed to the top end of the first embedded column (41), a first partition surface (43) is fixed to the top end of the second embedded column (42), and a screw rod (44) is fixed to the middle of the top end of the first partition surface (43).
3. The safety fixing assembly according to claim 1, characterized in that: The diameter difference between the first partition surface (43) and the first embedded column (41) is 4-6 mm.
4. The safety fixing assembly according to claim 1, characterized in that: The diameters of the first embedded pillar (41) and the second embedded pillar (42) differ by 2-3 mm.
5. The safety fixing assembly according to claim 1, characterized in that: The diameter of the second embedded column (42) is consistent with the diameter of the screw (44).
6. The safety fixing assembly according to claim 1, characterized in that: A plurality of vertical grooves (411) are formed on the first embedded column (41).
7. The safety fixing assembly according to claim 1, characterized in that: The second embedded column (42) is provided with a plurality of axial grooves.
8. The safety fixing assembly according to claim 1, characterized in that: The functional screw (4) and the functional nut (5) are both made of rigid conductive material.
9. A high-voltage control device comprising the safety fixing assembly according to any one of claims 1 to 8, characterized in that: The invention also includes a high-voltage box (1), a first wiring harness (2), and a second wiring harness (3); the high-voltage box (1) is provided with at least one mounting groove (11); a functional screw (4) is fixed in the mounting groove (11); the first wiring harness (2) and the second wiring harness (3) are both sleeved on the screw rod (44); and the functional nut (5) and the screw rod (44) are fastened by threads to fix the first wiring harness (2) and the second wiring harness (3).
10. A high-voltage control device according to claim 9, characterized in that: A functional screw (4) is fixed in the installation groove (11) by injection molding.