A new blind hole insert for vehicle

Abstract

The utility model provides a novel blind hole insert for vehicle belongs to the technical field of automobile parts, a novel blind hole insert for vehicle includes blind hole cover and deformation plug -in spare, the utility model discloses a deformation plug -in spare is arranged in the blind hole cover with blind hole, and the side wall of blind hole cover is provided with the through insertion hole, and the deformation plug -in spare has a plurality of corresponding insertion needle of insertion hole, and the needle of insertion needle stretches into the corresponding insertion hole, so that after the blind hole cover is pressed into the plastic piece in the conventional mode, still can continue to push and squeeze deformation plug -in spare through the push and squeeze head stretches into the blind hole of blind hole cover, makes the insertion needle deformation along the insertion hole and stretches out to the outside of blind hole cover, thereby the needle of insertion needle is inserted into the plastic piece around blind hole cover, and the installation of blind hole cover in plastic piece is provided further axial and circumferential location through insertion needle, makes the connection stability and reliability better, effectively prevents the problem that blind hole insert loosens and comes off.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a novel blind hole insert for automobiles. Background Technology

[0002] In automobiles, screws and other connectors are used to assemble some plastic parts. However, due to the material properties of plastic parts, their structural strength is relatively low, making them prone to stripping and falling off when connected to screws, affecting the stability and reliability of the connection. Furthermore, some plastic parts have diverse shapes, making it difficult to machine the threaded holes for screws without a locating reference. Therefore, the industry typically uses blind-hole inserts made of metal pressed into the holes of plastic parts. These inserts not only increase the structural strength of the parts where screws are connected, resulting in a more stable and reliable connection, but also allow for easier machining of the inserts by pre-machining the threads before pressing them into the holes.

[0003] Existing blind-hole inserts on the market, such as the insert nut disclosed in patent CN222296675U (equivalent to the aforementioned blind-hole insert), include a barrel-shaped nut body. The inner ring of the nut body has an internal thread, and the outer ring of the nut body has a first annular protrusion and a second annular protrusion distributed vertically along its axial direction. Furthermore, inclined grooves are evenly distributed around the outer rings of the first and second annular protrusions, and a first annular groove is formed between the first and second annular protrusions at intervals. In use, the insert nut is embedded in an automotive plastic product. The inclined grooves achieve circumferential and axial positioning of the insert nut within the automotive plastic product, and the first annular grooves achieve axial positioning, thereby achieving stable installation of the insert nut within the automotive plastic product. However, in actual use, since the insert nut is usually axially embedded in the automotive plastic product, the material is blocked by the first annular protrusion, and only a small amount of plastic enters the first annular groove. This makes the insert nut less stable in the axial direction. After tightening the screw or after a period of use, factors such as vibration during vehicle operation can also easily cause the insert nut to loosen, thus affecting the connection reliability of the automotive plastic product. Therefore, the industry needs to design a blind hole insert that can improve connection reliability. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, a novel automotive blind hole insert is provided. This insert has a through-hole on the side wall of the blind hole sleeve, and a deformable connector is disposed within the hole of the blind hole sleeve. The deformable connector has a pin with a tip extending into the hole. When the blind hole sleeve is embedded in a plastic part, the deformable connector can be pushed, causing the pin on the deformable connector to extend along the hole to the outside of the blind hole sleeve and then insert into the plastic part. The pin provides axial and circumferential restraint to the blind hole sleeve, thereby preventing the blind hole insert from easily loosening and falling out, making the connection of the blind hole insert to the plastic part more reliable.

[0005] The specific technical solution is as follows: A novel blind hole insert for automobiles includes a blind hole sleeve with a blind hole, wherein the inner wall of the blind hole sleeve, near the opening end, has an internal thread, and further includes: A deformable connector is disposed in the blind hole of the blind hole sleeve and moves along the axial direction of the blind hole. The deformable connector includes a pressure block and several pins. One end of each pin is connected to the pressure block. Several insertion holes corresponding to the pins are opened on the side wall of the blind hole sleeve. The insertion holes penetrate the side wall of the blind hole sleeve, and the tips of the pins extend into the insertion holes.

[0006] In the aforementioned novel automotive blind hole insert, the pressure block has a circular structure.

[0007] The aforementioned novel automotive blind hole insert has a plurality of pins arranged in a ring array on a pressure block.

[0008] The aforementioned novel automotive blind hole insert has an insertion hole located at one end of the blind hole sleeve where the hole bottom is located.

[0009] The above-mentioned novel blind hole insert for automobiles has a positioning hole in the center of the pressure block. At the same time, the end of the push head used to push the pressure block is provided with a protruding positioning block, and when the end of the push head contacts the pressure block, the positioning block is inserted into the positioning hole.

[0010] The aforementioned novel automotive blind hole insert has a chamfered outer edge at one end of the protruding positioning block, and a chamfered edge at the end of the positioning hole near the opening of the blind hole.

[0011] The aforementioned novel automotive blind hole insert has a concave annular groove formed on the inner wall of the blind hole of the blind hole sleeve along its circumference, and the annular groove is connected to each insertion hole.

[0012] The aforementioned novel automotive blind hole insert has oblique holes arranged at an angle to the axial direction of the blind hole, and the end of the insert located outside the blind hole sleeve is closer to the bottom end of the blind hole sleeve.

[0013] The above-mentioned novel automotive blind hole insert has a first annular protrusion and a second annular protrusion arranged circumferentially on the outside of the blind hole sleeve, and the first annular protrusion and the second annular protrusion are arranged at intervals in the axial direction of the blind hole sleeve to form an annular groove between them. The outer sidewalls of the first annular protrusion and the second annular protrusion are provided with tooth grooves.

[0014] The above-mentioned novel automotive blind hole insert has a first annular protrusion disposed at one end of the opening of the blind hole in the blind hole sleeve, and a vent hole penetrating both ends is provided on the first annular protrusion along the axial direction of the blind hole.

[0015] The positive effects of the above technical solution are: The aforementioned novel automotive blind hole insert incorporates a movable deformable connector within a blind hole sleeve. This deformable connector features several pins, and a through-hole is formed on the side wall of the blind hole sleeve, with each pin corresponding to a single hole. This allows the deformable connector to be pushed further into the blind hole of the sleeve after the blind hole sleeve is pressed into the plastic part. The pusher head extends into the blind hole of the sleeve, enabling the pins of the deformable connector to move from the holes into the surrounding plastic part. The pins achieve axial and circumferential positioning of the blind hole sleeve within the plastic part, thereby improving connection reliability and stability, ensuring connection strength, and preventing loosening or detachment. Attached Figure Description

[0016] Figure 1 This is a structural diagram of one state of an embodiment of a novel automotive blind hole insert according to the present invention; Figure 2 This is a structural diagram of another embodiment of the novel automotive blind hole insert of this utility model; Figure 3 This is a structural diagram of a blind hole sleeve according to an embodiment of a novel blind hole insert for automobiles of this utility model; Figure 4 This is a structural diagram of a deformable plug-in component according to an embodiment of a novel blind hole insert for automobiles.

[0017] In the attached diagram: 1. Blind hole sleeve; 11. Blind hole; 12. Insertion hole; 13. Annular groove; 14. First annular protrusion; 15. Second annular protrusion; 16. Annular groove; 141. Toothed groove; 142. Vent hole; 2. Deformable connector; 21. Pressure block; 22. Insert pin; 211. Positioning hole. Detailed Implementation

[0018] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following embodiments are provided in conjunction with the appendix. Figure 1 To be continued Figure 4 The technical solution provided by this utility model is described in detail, but the following content is not intended to limit this utility model.

[0019] Figure 1 This is a structural diagram of one state of an embodiment of a novel automotive blind hole insert according to the present invention; Figure 2 This is a structural diagram showing another configuration of an embodiment of the novel automotive blind hole insert of this utility model. Figure 1 and Figure 2 As shown, the novel automotive blind hole insert provided in this embodiment includes: a blind hole sleeve 1 with a blind hole 11 and a deformable plug-in component 2. In this case, an internal thread is provided on the inner wall of the hole of the blind hole sleeve 1, at the end closest to the hole opening, to facilitate threaded connection between the blind hole sleeve 1 and a screw, thus meeting installation requirements.

[0020] Figure 3 This is a structural diagram of a blind hole sleeve according to an embodiment of a novel blind hole insert for automobiles of this utility model; Figure 4 This is a structural diagram of a deformable insert according to an embodiment of a novel blind hole insert for automobiles of this utility model. Figures 1 to 4 As shown, the deformable connector 2 is disposed within the blind hole 11 of the blind hole sleeve 1, and the deformable connector 2 can move axially along the blind hole 11, providing conditions for the subsequent extension of the pin 22 along the insertion hole 12 by pushing the deformable connector 2. At this time, the deformable connector 2 includes a pressure block 21 and a plurality of pins 22, and one end of each of the plurality of pins 22 is connected to the pressure block 21, that is, the plurality of pins 22 are connected by the pressure block 21 to form an integral structure, which facilitates the assembly of the deformable connector 2 within the blind hole sleeve 1 and provides conditions for the subsequent simultaneous insertion of the plurality of pins 22 into the plastic part. Furthermore, the side wall of the blind hole sleeve 1 is provided with several insertion holes 12 corresponding one-to-one with the pins 22. The insertion holes 12 penetrate the side wall of the blind hole sleeve 1 and extend the tip of the pin 22 into the insertion hole 12, so that each pin 22 has a corresponding insertion hole 12, providing a channel for guiding the pin 22 through the insertion hole 12 and for inserting the pin 22 into the plastic part. During installation, the blind hole sleeve 1 is first pressed into the corresponding hole on the plastic part in the conventional manner to achieve the conventional installation of the blind hole sleeve 1. Then, the push head is inserted into the blind hole sleeve 1 to contact the pressure block 21. The push head continues to push the pressure block 21, causing the pressure block 21 to continue moving within the blind hole 11 of the blind hole sleeve 1. Since the tip of the pin 22 is located within the insertion hole 12, as the pressure block 21 continues to move within the blind hole 11, the pressure block 21 will push the pin 22 towards the insertion hole 12 until the tip of the pin 22 extends out of the insertion hole 12, allowing the tip of the pin 22 to extend to the outer side wall of the blind hole sleeve 1. This allows the extended tip of the pin 22 to penetrate into the plastic parts surrounding the blind hole sleeve 1. The pin 22 provides axial and circumferential positioning of the blind hole sleeve 1, thereby preventing the blind hole insert from easily loosening and coming out, making the connection of the blind hole insert on the plastic parts more reliable.

[0021] More specifically, the pressure block 21 of the deformable connector 2 has a circular plate structure, which allows the pressure block 21 to better fit the cross-sectional shape of the blind hole 11 and facilitates the movement of the pressure block 21 along its axial direction within the blind hole 11.

[0022] More specifically, a number of pins 22 are arranged in a ring array on the pressure block 21, which achieves a uniform distribution of the pins 22 on the pressure block 21. This ensures that when the pressure block 21 is pushed, the force exerted by the pressure block 21 on each pin 22 is the same, thus ensuring that each pin 22 can be smoothly inserted into the plastic part.

[0023] More specifically, the insertion hole 12 on the blind hole sleeve 1 is located at the bottom of the hole of the blind hole sleeve 1, so that the deformable plug 2 that mates with the insertion hole 12 will not interfere with the threads in the hole of the blind hole sleeve 1 after it is installed in the hole of the blind hole sleeve 1, thus ensuring that the screws that are subsequently threaded to the blind hole sleeve 1 can be installed normally.

[0024] More specifically, a positioning hole 211 is provided at the center of the pressure block 21 of the deformable plug 2. At the same time, a protruding positioning block is provided at the end of the pushing head used to push the pressure block 21. When the end of the pushing head contacts the pressure block 21, the positioning block is inserted into the positioning hole 211. This ensures that the pressure block 21 is stable when it is pushed by the pushing head, preventing the pressure block 21 from tilting or becoming eccentric in the blind hole 11 of the blind hole sleeve 1. This ensures that the pushing of each pin 22 is consistent.

[0025] More specifically, a chamfer is provided on the outer edge of the protruding end of the positioning block, and a chamfer is also provided on the edge of the positioning hole 211 near the opening of the blind hole 11. This allows the two chamfers to form a guide surface when the positioning block is inserted into the positioning hole 211, thus guiding each other and facilitating the quick insertion of the positioning block into the positioning hole 211. The structural design is more reasonable.

[0026] More specifically, a concave annular groove 13 is formed on the inner wall of the blind hole 11 of the blind hole sleeve 1 along its circumference. The annular groove 13 forms a guide groove in the blind hole 11 and in the circumference of the blind hole 11. Furthermore, the annular groove 13 is connected to each insertion hole 12, so that when the deformable plug 2 is inserted into the blind hole 11 in the blind hole sleeve 1, the tip of the insert pin 22 can first enter the annular groove 13 to achieve axial positioning of the deformable plug 2 in the blind hole 11. Then, the pressure block 21 is rotated by the tool to move the tip of the insert pin 22 in the annular groove 13 until the tip of the insert pin 22 is aligned with the insertion hole 12 to achieve circumferential positioning, which facilitates the installation of the deformable plug 2 in the blind hole 11 of the blind hole sleeve 1.

[0027] More specifically, the insertion holes 12 on the blind hole sleeve 1 are all oblique holes arranged at an angle to the axis of the blind hole 11, and the end of the insertion hole 12 located outside the blind hole sleeve 1 is closer to the bottom end of the blind hole sleeve 1. This allows the oblique insertion hole 12 to better adapt to the movement of the insertion pin 22 when the pressing block 21 is pushed and the insertion pin 22 moves inside the insertion hole 12. At the same time, it can also guide the insertion pin 22 to bend and deform so that the tip of the insertion pin 22 extends outside the blind hole sleeve 1, making the structural design more reasonable.

[0028] More specifically, a first annular protrusion 14 and a second annular protrusion 15 are provided circumferentially outside the blind hole sleeve 1, and the first annular protrusion 14 and the second annular protrusion 15 are spaced apart axially in the blind hole sleeve 1, so that an annular groove 16 can be formed between the first annular protrusion 14 and the second annular protrusion 15. This allows the outer wall of the blind hole sleeve 1 to form an uneven structure, so that when the blind hole sleeve 1 is pressed into the plastic part, some material of the plastic part can enter into the annular groove 16, improving the bonding ability with the plastic part. In addition, the outer walls of the first annular protrusion 14 and the second annular protrusion 15 are provided with toothed grooves 141. The toothed grooves 141 increase the surface roughness of the first annular protrusion 14 and the second annular protrusion 15, further improving the bonding ability with the plastic part and improving the connection stability and reliability.

[0029] More specifically, the first annular protrusion 14 is set at one end of the opening of the blind hole 11 in the blind hole sleeve 1. At the same time, a vent hole 142 penetrating both ends is opened on the first annular protrusion 14 along the axial direction of the blind hole 11. The annular groove 16 is connected to the outside through the vent hole 142, so that when the material of the plastic part enters into the annular groove 16, the air in the annular groove 16 can be quickly discharged through the vent hole 142, which is conducive to more material of the plastic part entering into the annular groove 16 and further improving the connection strength.

[0030] The novel automotive blind hole insert provided in this embodiment includes a blind hole sleeve 1 and a deformable plug-in 2. By setting the deformable plug-in 2 inside the blind hole sleeve 1 with a blind hole 11, and opening a through insertion hole 12 on the side wall of the blind hole sleeve 1, the deformable plug-in 2 has a plurality of pins 22 corresponding to the insertion holes 12, and the pin tips of the pins 22 extend into the corresponding insertion holes 12, so that after the blind hole sleeve 1 is pressed into the plastic part in a conventional manner, the deformable plug-in 2 can be further pushed by extending a push head into the blind hole 11 of the blind hole sleeve 1, so that the pins 22 deform and extend out of the blind hole sleeve 1 along the insertion hole 12, thereby inserting the pin tips of the pins 22 into the plastic part around the blind hole sleeve 1. The pins 22 provide further axial and circumferential limiting for the installation of the blind hole sleeve 1 in the plastic part, so that the connection stability and reliability are better, and the problem of the blind hole insert loosening and falling out is effectively prevented.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel automotive blind hole insert, comprising a blind hole sleeve with a blind hole, wherein an internal thread is provided on the inner wall of the blind hole sleeve near the opening of the hole, characterized in that, Also includes: A deformable connector is disposed in the blind hole of the blind hole sleeve and moves along the axial direction of the blind hole. The deformable connector includes a pressure block and a plurality of pins. One end of each of the pins is connected to the pressure block. A plurality of insertion holes corresponding to the pins are opened on the side wall of the blind hole sleeve. The insertion holes penetrate the side wall of the blind hole sleeve, and the tips of the pins extend into the insertion holes.

2. The novel automotive blind hole insert according to claim 1, characterized in that, The pressing block has a circular sheet structure.

3. The novel automotive blind hole insert according to claim 2, characterized in that, Several of the pins are arranged in a ring array on the pressure block.

4. The novel automotive blind hole insert according to claim 1, characterized in that, The insertion hole is located at one end of the hole at the bottom of the blind hole sleeve.

5. The novel automotive blind hole insert according to claim 1, characterized in that, The pressure block has a positioning hole in the center. At the same time, the end of the pushing head used to push the pressure block is provided with a protruding positioning block. When the end of the pushing head contacts the pressure block, the positioning block is inserted into the positioning hole.

6. The novel automotive blind hole insert according to claim 5, characterized in that, The outer edge of the protruding end of the positioning block is chamfered, and the edge of the positioning hole near the opening of the blind hole is also chamfered.

7. The novel automotive blind hole insert according to claim 1, characterized in that, A concave annular groove is formed on the inner wall of the blind hole of the blind hole sleeve along its circumference, and the annular groove is connected to each of the insertion holes.

8. The novel automotive blind hole insert according to claim 1, characterized in that, All the insertion holes are oblique holes arranged at an angle to the axis of the blind hole, and the end of the insertion hole located outside the blind hole sleeve is closer to the bottom end of the blind hole sleeve.

9. The novel automotive blind hole insert according to claim 1, characterized in that, The blind hole sleeve is provided with a first annular protrusion and a second annular protrusion in the circumferential direction, and the first annular protrusion and the second annular protrusion are arranged at intervals in the axial direction of the blind hole sleeve to form an annular groove between them. The outer sidewalls of the first annular protrusion and the second annular protrusion are provided with tooth grooves.

10. The novel automotive blind hole insert according to claim 9, characterized in that, The first annular protrusion is disposed at one end of the opening of the blind hole in the blind hole sleeve. At the same time, a vent hole penetrating both ends is opened on the first annular protrusion along the axial direction of the blind hole.

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