Nut insert structure

Abstract

The utility model relates to the technical field of fastening connecting pieces, in particular to a nut insert structure which comprises a base, two sliding seats and a nut, sliding grooves matched with the nut in a sliding mode are formed in the opposite side walls of the two sliding seats, elastic arm structures are arranged at the ends, in the extending direction of the sliding grooves, of the two sliding seats, and stopping structures are arranged at the other ends of the two sliding seats. One end of the elastic arm structure is connected to the base, the other end of the elastic arm structure overhangs to an inlet of the sliding groove in the direction that the nut is installed in the sliding groove, and the nut presses the elastic arm structure, then enters the sliding groove and is jointly clamped and positioned by the elastic arm structure and the stopping structure; a supporting piece used for preventing the elastic arm structure from being pressed down unexpectedly is arranged between the elastic arm structure and the base. The requirement that the nut is positioned in the axial direction and the radial direction can be met, the nut can be detached and replaced, the supporting piece can prevent the elastic arm structure from being pressed downwards unexpectedly, then the nut is prevented from being separated from positioning accidentally, and normal positioning of the nut is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fastening connectors, and more specifically, to a nut insert structure. Background Art

[0002] In the automotive field, especially in the field of new energy vehicles, a large number of metal parts are used for power transmission and electrical connection, thereby generating various devices such as distribution boxes and adapter boxes. In these devices, using bolts and nuts is a common fastening connection means.

[0003] In the above-mentioned fastening connection means, the nut is usually embedded and injection-molded on the plastic housing of the above-mentioned device. However, the nut in the insert injection molding method is not detachable. Once the nut has quality problems or external damage, such as damage to the internal thread, it cannot be replaced. Therefore, it is necessary to develop a new nut fixing technology to replace the traditional insert injection molding technology. Summary of the Utility Model

[0004] The utility model provides a nut insert structure to solve the problem that the nut in the existing insert injection molding technology cannot be disassembled and replaced.

[0005] A nut insert structure provided by the utility model includes a base, two sliding seats formed on the top end face of the base and arranged oppositely, and a nut arranged inside the two sliding seats. Sliding grooves for sliding cooperation with the nut are formed on the opposite side walls of the two sliding seats. An elastic arm structure is provided at one end of the two sliding seats in the extending direction of the sliding grooves, and a stop structure is provided at the other end. One end of the elastic arm structure is connected to the base, and the other end extends to the entrance of the sliding groove along the direction in which the nut is inserted into the sliding groove. After the nut presses the elastic arm structure, it enters the sliding groove and is clamped and positioned by the elastic arm structure and the stop structure together. A support member is arranged between the elastic arm structure and the base to prevent the elastic arm structure from being unexpectedly pressed down.

[0006] Optionally, the other end of the elastic arm structure is inclined in a direction away from the base, and at least one side wall of the side walls on both sides of the extending direction of the elastic arm structure protrudes outward to form a protrusion, and the support member is padded between the protrusion and the base.

[0007] Optionally, it further includes a anti-disengagement member integrally provided with the support member. The anti-disengagement member includes a contact portion perpendicular to the support member and connecting portions provided at opposite ends of the contact portion. Slots for receiving the connecting portions are formed at one ends of the two sliding seats facing the anti-disengagement member, and when the connecting portions are inserted into the slots, the contact portion abuts against the nut.

[0008] Optionally, the connecting portion and the corresponding slot are detachably connected by a snap structure.

[0009] Optionally, the snap structure includes barbs provided on the connecting portion and a card slot on the inner wall of the slot. After the connecting portion is inserted into the slot, the end of the barb abuts against the wall of the card slot to prevent the connecting portion from withdrawing from the slot.

[0010] Optionally, an operation port communicating with the slot is provided on the base or / and the sliding seat, and the card slot is arranged along the axial direction of the nut and extends to the operation port.

[0011] Optionally, an avoidance groove for avoiding the elastic arm structure is provided on the abutting portion.

[0012] Optionally, the nut includes an integrally formed base and a nut body with internal threads. The base is slidably arranged in the chute to prevent the nut body from axially falling off from the inner sides of the two sliding seats.

[0013] Optionally, the end face of the nut body is not lower than the end faces of the two sliding seats away from the base.

[0014] Optionally, the stopping structure includes baffles respectively connected to the two sliding seats and the base, and the baffles, the elastic arm structure, the two sliding seats and the base are integrally injection molded.

[0015] The utility model has the following beneficial effects:

[0016] The nut of the utility model can enter the chute after pressing the elastic arm structure and be jointly clamped and positioned by the elastic arm structure and the stopping structure, meeting the requirement that the nut is positioned both axially and radially. Moreover, the nut can be disassembled and replaced. In addition, the support member can prevent the elastic arm structure from being unexpectedly pressed down, thereby preventing the nut from accidentally disengaging from the positioning, ensuring the normal positioning of the nut.

[0017] Other features and advantages of the utility model will become clear from the following detailed description of the exemplary embodiments of the utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model.

[0019] Figure 1 is a schematic structural diagram of a perspective view of the nut insert structure of this embodiment;

[0020] Figure 2 is a schematic cross-sectional structural diagram of the nut insert structure of this embodiment;

[0021] Figure 3 is a schematic structural diagram of another perspective view of the nut insert structure of this embodiment;

[0022] Figure 4Schematic diagram of the nut insert structure of this embodiment from another perspective;

[0023] Figure 5 Schematic diagram of the nut insert structure when the nut, anti - detachment part, and support part are not installed;

[0024] Figure 6 Schematic diagram of the anti - detachment part and the support part;

[0025] Figure 7 Schematic diagram of the nut.

[0026] The markings in the figure are as follows:

[0027] 1. Base; 11. Avoidance hole; 12. Operation port;

[0028] 2. Slide seat; 21. Slide groove; 211. Entrance; 22. Slot; 23. Card slot;

[0029] 3. Elastic arm structure; 31. Protrusion;

[0030] 4. Nut; 41. Base; 42. Nut body;

[0031] 5. Support part;

[0032] 6. Anti - detachment part; 61. Contact part; 62. Connection part; 63. Barbs; 64. Avoidance groove;

[0033] 7. Baffle. Detailed implementation manners

[0034] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0035] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as a limitation on the present invention or its application or use.

[0036] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification.

[0037] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0038] As Figures 1-7As shown in the figure, an embodiment of the present utility model provides a nut insert structure, which includes a base 1, two sliding seats 2 formed on the top end surface of the base 1 and arranged oppositely, and a nut 4 arranged inside the two sliding seats 2. Sliding grooves 21 that are slidably matched with the nut 4 are formed on the opposite side walls of the two sliding seats 2. One end of the two sliding seats 2 in the extending direction of the sliding grooves 21 is provided with an elastic arm structure 3, and the other end is provided with a stopping structure. One end of the elastic arm structure 3 is connected to the base 1, and the other end extends to the entrance 211 of the sliding groove 21 along the direction in which the nut 4 is inserted into the sliding groove 21. After the nut 4 presses the elastic arm structure 3, it enters the sliding groove 21 and is jointly clamped and positioned by the elastic arm structure 3 and the stopping structure. A support member 5 is arranged between the elastic arm structure 3 and the base 1 to prevent the elastic arm structure 3 from being unexpectedly pressed down.

[0039] In this embodiment, the nut 4 can enter the sliding groove 21 after pressing the elastic arm structure 3 and is jointly clamped and positioned by the elastic arm structure 3 and the stopping structure, meeting the requirement that the nut 4 is positioned both axially and radially. Moreover, the nut 4 can be disassembled and replaced after manually pressing the elastic arm structure 3. In addition, the support member 5 can prevent the elastic arm structure 3 from being unexpectedly pressed down, thereby preventing the nut 4 from accidentally falling out of position, ensuring the normal positioning of the nut 4, and constituting an insurance structure for the normal positioning of the nut 4.

[0040] Furthermore, considering the rationality and stability of the structure, the other end of the elastic arm structure 3 is inclined away from the base 1, and at least one side wall of the side walls on both sides of the extending direction of the elastic arm structure 3 protrudes outwardly with a protrusion 31. The support member 5 is pad-mounted between the protrusion 31 and the base 1. As shown in Figure 5, specifically in this embodiment, the two sliding grooves 21 jointly enclose a slideway for the nut 4 to slide into. Considering that it is more reasonable to position the middle part of the nut 4, the other end of the elastic arm structure 3 is inclined away from the base 1 and actually extends to the entrance of the slideway, that is, to the position between the entrances 211 of the two sliding grooves 21. In addition, considering the stable support of the elastic arm structure 3, protrusions 31 are arranged on both side walls of the extending direction of the elastic arm structure 3, and a support member 5 is correspondingly pad-mounted between each protrusion 31 and the base 1.

[0041] Furthermore, in order to further ensure the normal positioning of the nut 4 so that the nut 4 can still be positioned when the elastic arm structure 3 is damaged or the positioning is unexpectedly released, as Figures 1-3 shown, in this embodiment, another insurance structure is added, that is, the nut insert structure of this embodiment further includes a anti-disengagement member 6 integrally provided with the support member 5. The anti-disengagement member 6 includes a contact portion 61 perpendicular to the support member 5, and connecting portions 62 arranged at opposite ends of the contact portion 61. Slots 22 for receiving the connecting portions 62 are formed at one end of the two sliding seats 2 facing the anti-disengagement member 6, and when the connecting portions 62 are inserted into the slots 22, the contact portion 61 abuts against the nut 4.

[0042] Further, for ease of disassembly and assembly, as Figure 4 , 6 shown, in this embodiment, the connecting portion 62 and the corresponding slot 22 are detachably connected by a snap structure.

[0043] Specifically, considering the rationality of the processing technology, the snap structure includes barbs 63 provided on the connecting portion 62 and a slot 23 on the inner wall of the slot 22. After the connecting portion 62 is inserted into the slot 22, the end of the barb 63 abuts against the wall of the slot 23 to prevent the connecting portion 62 from withdrawing from the slot 22.

[0044] Of course, in other embodiments, the snap structure may also include a through hole provided on the connecting portion and a boss on the inner wall of the slot. After the connecting portion is inserted into the slot, the boss enters the through hole and is snap-connected with the through hole to prevent the connecting portion from withdrawing from the slot. This structure is understood and easily implemented by those skilled in the art, so no further detailed illustration and description will be made.

[0045] Further, considering the convenience of disassembling the anti-disengagement member 6, as Figure 4 shown, in this embodiment, an operation port 12 communicating with the slot 22 is provided on the base 1, and the slot 23 is arranged along the axial direction of the nut 4 and extends to the operation port 12.

[0046] Of course, in other embodiments, the operation port may also be provided on the sliding seat, such as on the end face of the end of the sliding seat away from the base. At this time, the operation port communicates with the slot, and the slot is also arranged along the axial direction of the nut and extends to the operation port. Alternatively, operation ports may be provided on both the sliding seat and the base, and the two operation ports can be axially corresponding. The slot communicates with the two operation ports, and the slot is arranged along the axial direction of the nut and extends to the two operation ports. The above structures are understood and easily implemented by those skilled in the art, so no further detailed illustration and description will be made.

[0047] Further, the abutting portion 61 in this embodiment is designed to be relatively wide to increase the abutting area with the nut 4. To avoid the elastic arm structure 3 and prevent interference between the two, as Figure 6 shown, an avoidance groove 64 for avoiding the elastic arm structure 3 is provided on the abutting portion 61.

[0048] Further, considering the use environment of the nut 4 and the requirements for connection and fixing performance, as Figure 7As shown, in this embodiment, the nut 4 includes an integrally formed base 41 and a nut body 42 with an internal thread. The base 41 is slidably arranged in the slide groove 21 to limit the nut body 42 from falling off axially from the inner side of the two slides 2. The longer nut body 42 can meet the requirements of a smooth and stable connection with the matching bolts. The base 41 with a regular quadrangular prism shape and rounded edges can meet the requirements of stable positioning. In addition, in this embodiment, the other end of the elastic arm structure 3 and the abutment portion 61 of the anti-slip component 6 are actually abutted against the corresponding side of the base 41.

[0049] Furthermore, in order to ensure effective contact between the nut body 42 and the connected parts such as the copper busbar, and to cooperate with the bolts to ensure the fixing effect of the copper busbar, the end face of the nut body 42 is not lower than the end faces of the two slides 2 away from the base 1. In this embodiment, the end face of the nut body 42 is slightly higher than the end faces of the two slides 2 away from the base 1.

[0050] Furthermore, considering the convenience of processing and assembly and the positioning effect, as Figures 1-5 As shown, in this embodiment, the blocking structure includes a baffle 7 connected to the two slides 2 and the base 1 respectively. The baffle 7, the elastic arm structure 3, the two slides 2 and the base 1 are integrally injection molded, and an avoidance hole 11 can be reserved on the base 1 to avoid the elastic arm structure 3 from bouncing.

[0051] In other embodiments, the stopping structure may also be another set of elastic arm structures symmetrically arranged with respect to the axis of the nut with respect to the above-mentioned elastic arm structure, and another set of supporting members and anti-slip members may be arranged correspondingly.

[0052] During the specific assembly, the nut 4 is pushed so that the base 41 presses the elastic arm structure 3 and then enters the slide groove 21. The nut body 42 is located between the two slides 2 until the base 41 is clamped and positioned by the other end of the elastic arm structure 3 and the baffle 7. Then the anti-slip component 6 and the support component 5 are installed, and the anti-slip component 6 is pushed so that the connecting part 62 is inserted into the slot 22. During this period, the avoidance groove 64 on the abutting part 61 passes over the other end of the elastic arm structure 3. When the connecting part 62 is inserted into the slot 22 and the end of the barb 63 abuts against the groove wall of the corresponding card slot 23, the abutting part 61 abuts against the base 41, and the support component 5 moves between the corresponding protrusion 31 and the base 1 to prevent unexpected pressing of the elastic arm structure 3.

[0053] During disassembly, the operating tool releases the contact between the end of the barb 63 and the corresponding slot wall of the slot 23 through the operating port 12, and then the anti-slip component 6 is removed, and the support component 5 then moves away from between the corresponding protrusion 31 and the base 1. At this time, the elastic arm structure 3 can be pressed to release the other end of the cantilevered elastic arm structure 3 from positioning the base 41, and then the base 41 can be slid and the nut 4 can be removed.

[0054] In fact, the nut insert structure can be applied to various occasions where bolt connection is required, such as a distribution box. At this time, the base 1 can be used as a part of the box body of the distribution box, that is, the baffle 7, the elastic arm structure 3, the two sliding seats 2 and the base 1 in this embodiment are integrally injection-molded with the box body of the distribution box.

[0055] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A nut insert structure, comprising a base, two sliding seats formed on the top end face of the base and arranged oppositely, and a nut arranged inside the two sliding seats. Chutes for sliding cooperation with the nut are formed on the opposite side walls of the two sliding seats. It is characterized in that, One end of the two sliding seats in the extending direction of the chute is provided with an elastic arm structure, and the other end is provided with a stopping structure; one end of the elastic arm structure is connected to the base, and the other end extends to the entrance of the chute along the direction in which the nut is inserted into the chute. After the nut presses the elastic arm structure, it enters the chute and is clamped and positioned by the elastic arm structure and the stopping structure together; a support member is arranged between the elastic arm structure and the base to prevent the unexpected downward pressure of the elastic arm structure.

2. The nut insert structure according to claim 1, characterized in that, The other end of the elastic arm structure is inclined away from the base, and at least one side wall of the side walls on both sides of the extending direction of the elastic arm structure protrudes outwardly with a protrusion, and the support member is pad-mounted between the protrusion and the base.

3. The nut insert structure according to claim 1, characterized in that, It further includes an anti-disengagement member integrally provided with the support member. The anti-disengagement member includes a contact portion perpendicular to the support member and connecting portions provided at opposite ends of the contact portion. One end of the two sliding seats facing the anti-disengagement member is provided with a slot for receiving the connecting portions, and when the connecting portions are inserted into the slots, the contact portion abuts against the nut.

4. The nut insert structure according to claim 3, characterized in that, The connecting portion and the corresponding slot are detachably connected by a snap structure.

5. A nut insert structure according to claim 4, characterized in that, The snap structure includes barbs provided on the connecting portion and a card slot on the inner wall of the slot. After the connecting portion is inserted into the slot, the end of the barb abuts against the wall of the card slot to prevent the connecting portion from withdrawing from the slot.

6. The nut insert structure according to claim 5, characterized in that, An operation port communicating with the slot is provided on the base or / and the sliding seat, and the card slot is arranged along the axial direction of the nut and extends to the operation port.

7. The nut insert structure according to claim 3, characterized in that, A relief groove for avoiding the elastic arm structure is provided on the contact portion.

8. The nut insert structure according to claim 1, characterized in that, The nut includes an integrally formed base and a nut body with an internal thread. The base is slidably arranged in the chute to limit the axial detachment of the nut body from the inner sides of the two sliding seats.

9. A nut insert structure according to claim 8, characterized in that, The end face of the nut body is not lower than the end faces of the two sliding seats away from the base.

10. A nut insert structure according to claim 1, characterized in that, The stopping structure includes baffles respectively connected to the two sliding seats and the base, and the baffles, the elastic arm structure, the two sliding seats and the base are integrally injection-molded.

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