High-stability steering wheel frame fixing structure

By using a snap-fit ​​lower and upper mold and a pressing assembly in the foaming mold, the problem of loosening of the disc frame is solved, ensuring the stability and molding quality of the steering wheel.

CN223314318UActive Publication Date: 2025-09-09惠州市冠霆科技有限公司
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Patent Information

Application Number
CN202422776007.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-13
Publication Date
2025-09-09
Estimated Expiration
2034-11-13

AI Technical Summary

Technical Problem

In the prior art, the steering wheel frame of an automobile is easily loosened in the foaming mold, resulting in poor molding quality.

Method used

A lower mold and an upper mold that can be interlocked are used, combined with a pressing component, including a sleeve, a sliding shaft and an elastic member. The sliding shaft is pushed into the cavity by the elastic member to ensure that the disc rack is stably fixed in the mold.

Benefits of technology

The wheel frame is reliably fixed in the mold, the molding quality is ensured, deviation is avoided, and the stability and molding effect of the steering wheel are improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model aims at providing a high-stability steering wheel frame fixing structure which comprises a lower die, an upper die and a pressing and fixing assembly, the lower die and the upper die can be mutually buckled or separated, a first cavity groove is formed in the lower die and used for containing a disc frame, a second cavity groove is formed in the upper die, and the pressing and fixing assembly comprises a sleeve seat, a sliding shaft and an elastic piece. The sleeve base is arranged on the side face, away from the lower die, of the upper die, the sliding shaft is arranged in the sleeve base in a sliding mode, one end of the sliding shaft penetrates through the upper die to extend into the second cavity groove, the other end of the sliding shaft is used for being connected with the sleeve base in a clamping mode, the elastic piece abuts against the sliding shaft and the sleeve base, and the elastic piece is used for pushing the sliding shaft so that one end of the sliding shaft can tend to be close to the first cavity groove. Thus, it can be ensured that the plate frame is reliably located in the center of a mold cavity formed by the first cavity groove and the second cavity groove, and after foam materials are injected into the mold cavity, a foaming outer layer can be formed outside the plate frame.
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Description

Technical Field

[0001] The utility model relates to the technical field of foaming moulds, in particular to a high-stability steering wheel frame fixing structure. Background Art

[0002] The mold for foam molding is a plastic foaming mold. The foaming resin is directly filled into the mold, which is heated and melted to form a gas-liquid saturated solution. Through nucleation, a large number of tiny bubble nuclei are formed, and the bubble nuclei grow to make foam plastic parts.

[0003] At present, automobile steering wheels are almost all made of foaming molds, specifically, Figure 6 As shown, the steering wheel 20 includes a support frame 21 and a foamed outer layer 22 wrapped around the outer side of the frame 21. During injection molding, the frame 21 is placed in a foaming mold, and then the foamed outer layer 22 is formed on the outer side of the frame 21.

[0004] To ensure the molding quality of the steering wheel 20, the frame 21 must be positioned at the center of the foaming mold's molding cavity. Therefore, the frame 21 must be stably fixed. Currently, the industry's common practice is to use metal columns or other structures to support the frame 21, keeping it suspended within the mold cavity. However, this existing method can easily loosen the frame 21 and cause it to shift within the mold cavity, resulting in poor molding quality for the steering wheel 20. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a high-stability steering wheel frame fixing structure which ensures that the frame is stably located in a mold cavity.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A high-stability steering wheel frame fixing structure includes a lower mold and an upper mold that can be interlocked or separated, the lower mold has a first cavity formed therein for accommodating the steering wheel frame, and the upper mold has a second cavity formed therein, and further includes:

[0008] A pressing assembly, the pressing assembly includes a sleeve, a sliding shaft and an elastic member, the sleeve is arranged on a side surface of the upper mold away from the lower mold, the sliding shaft is slidably arranged in the sleeve, one end of the sliding shaft is passed through the upper mold to extend into the second cavity, the other end of the sliding shaft is used to clamp the sleeve, the elastic member is respectively in contact with the sliding shaft and the sleeve, and the elastic member is used to push the sliding shaft so that one end of the sliding shaft has a tendency to approach the first cavity.

[0009] Optionally, a sliding groove is provided in the sleeve, and the sliding shaft is adaptively slidably arranged in the sliding groove.

[0010] Optionally, the sliding shaft includes a shaft body and a limiting rod, the shaft body is slidably arranged in the sliding groove, one end of the limiting rod is threadedly connected to the shaft body, and the other end of the limiting rod is used to clamp the sleeve.

[0011] Optionally, a clamping hole communicating with the sliding groove is further provided on the top of the sleeve, and the limiting rod is passed through the clamping hole.

[0012] Optionally, a locking head is provided at one end of the limiting rod away from the shaft body, and the diameter of the locking head is larger than the inner diameter of the locking hole.

[0013] Optionally, a top seat is provided at one end of the shaft body close to the second cavity.

[0014] Optionally, the top seat and the sliding shaft are an integrally formed structure.

[0015] Optionally, a push block is provided on a side surface of the top seat away from the shaft body, and the push block is used to push the disc rack.

[0016] Optionally, the softness of the top block is lower than the softness of the disc rack.

[0017] Optionally, a convex portion is provided on a side of the top block close to the top seat, and a groove is provided on a side of the top seat close to the top block, and the convex portion is accommodated in the groove.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] The high-stability steering wheel frame fixing structure of the present invention includes a lower mold and an upper mold that can be interlocked or separated with each other, and a pressing assembly. The lower mold has a first cavity formed therein for accommodating the steering wheel frame, and the upper mold has a second cavity formed therein. The pressing assembly includes a sleeve, a sliding shaft, and an elastic member. The sleeve is disposed on a side of the upper mold away from the lower mold. The sliding shaft slides within the sleeve. One end of the sliding shaft passes through the upper mold to extend into the second cavity. The other end of the sliding shaft is used to engage the sleeve. The elastic member abuts the sliding shaft and the sleeve, respectively. The elastic member is used to push the sliding shaft so that one end of the sliding shaft tends to approach the first cavity. In this way, under the elastic thrust of the elastic member, one end of the sliding shaft will extend into the second cavity. In this way, when the upper and lower molds are separated, the disc frame is placed in the first cavity. The lower mold then raises the disc frame to engage with the upper mold. As the lower and upper molds engage, the slide shaft extends into the second cavity, pressing the disc frame firmly against the first cavity. This ensures that the disc frame is securely positioned in the center of the mold cavity formed by the first and second cavities. After the foam material is injected into the mold cavity, a foamed outer layer is formed on the outside of the disc frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a structural schematic diagram of a high-stability steering wheel frame fixing structure according to one embodiment of the present invention;

[0022] Figure 2 for Figure 1 A schematic structural diagram of the high-stability steering wheel frame fixing structure from another angle is shown;

[0023] Figure 3 for Figure 1 A schematic cross-sectional view of the high-stability steering wheel frame fixing structure shown;

[0024] Figure 4 This is a schematic cross-sectional structural diagram of a sleeve according to one embodiment of the present invention;

[0025] Figure 5 for Figure 3 A local enlarged structural diagram;

[0026] Figure 6 The figure is a schematic structural diagram of a car steering wheel according to one embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 20. Automobile steering wheel; 21. Wheel frame; 22. Foam outer layer; 10. High-stability steering wheel frame fixing structure; 100. Lower mold; 200. Upper mold; 300. Pressing assembly; 310. Sleeve; 320. Sliding shaft; 330. Elastic member; 311. Slide groove; 321. Shaft; 322. Limit rod; 312. Clamping hole; 323. Clamping head; 324. Top seat; 325. Top block; 326. Protrusion; 3241. Groove. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown.

[0030] like Figures 1 to 3As shown, a high-stability steering wheel frame fixing structure 10 includes a lower mold 100 and an upper mold 200 that can be engaged or separated with each other, and a pressing component 300. A first cavity is opened in the lower mold 100, and the first cavity is used to accommodate the wheel frame 21. A second cavity is opened on the upper mold 200. The pressing component 300 includes a sleeve 310, a sliding shaft 320 and an elastic member 330. The sleeve 310 is arranged on a side surface of the upper mold 200 away from the lower mold 100, and the sliding shaft 320 is slidably arranged in the sleeve 310. One end of the sliding shaft 320 is passed through the upper mold 200 to extend into the second cavity, and the other end of the sliding shaft 320 is used to clamp the sleeve 310. The elastic member 330 is respectively in contact with the sliding shaft 320 and the sleeve 310. The elastic member 330 is used to push the sliding shaft 320 so that one end of the sliding shaft 320 has a tendency to approach the first cavity.

[0031] It should be noted that the upper mold 200 and lower mold 100 are mounted on a foam injection molding machine, with the upper mold 200 being fixed and the lower mold 100 being slidably mounted. This allows the injection molding machine to drive the lower mold 100 upward or downward. When the lower mold 100 rises, the lower mold 100 engages with the upper mold 200. Furthermore, a clamping assembly 300 is mounted on the upper mold 200. Specifically, a sleeve 310 is bolted to the top of the upper mold 200. A slide shaft 320 is slidably mounted within the sleeve 310. An elastic member 330, such as a spring, abuts against the slide shaft 320 and sleeve 310, respectively. Consequently, under the elastic thrust of the elastic member 330, one end of the slide shaft 320 extends into the second cavity. Thus, when the upper mold 200 and the lower mold 100 are separated, the disc frame 21 is placed in the first cavity. The lower mold 100 then raises the disc frame 21 to engage with the upper mold 200. As the lower mold 100 and the upper mold 200 engage, the slide shaft 320 extends into the second cavity, pressing the disc frame 21 firmly against the first cavity. This ensures that the disc frame 21 is securely positioned in the center of the mold cavity formed by the first and second cavities. After the foam material is injected into the mold cavity, a foamed outer layer 22 is formed on the outside of the disc frame 21.

[0032] like Figure 3 and Figure 4 As shown, in one embodiment, a sliding groove 311 is provided in the sleeve 310, and the sliding shaft 320 is adapted to slide in the sliding groove 311. In this way, it is ensured that the sliding shaft 320 can slide along the sleeve 310 to approach or move away from the second cavity.

[0033] like Figure 3 As shown, in one embodiment, the sliding shaft 320 includes a shaft body 321 and a limiting rod 322. The shaft body 321 is slidably set in the sliding groove 311. One end of the limiting rod 322 is screwed to the shaft body 321, and the other end of the limiting rod 322 is used to clamp the sleeve 310.

[0034] It should be noted that the sliding shaft 320, under the pushing action of the elastic member 330, can extend into the second cavity to press against the disc holder 21. The above structure is provided to prevent the sliding shaft 320 from completely dislodging from the sliding groove 311. Specifically, the limiting rod 322 passes through the sleeve 310 and is threadedly engaged with the shaft body 321. The locking action of the limiting rod 322 and the sleeve 310 ensures that the shaft body 321 can only slide within the sliding groove 311 and cannot escape.

[0035] like Figure 4 As shown, in one embodiment, the top of the sleeve 310 is further provided with a clamping hole 312 connected to the slide groove 311, and the limiting rod 322 is passed through the clamping hole 312. In this way, the clamping hole 312 is used to clamp the limiting rod 322, so that the shaft 321 can only slide in the slide groove 311.

[0036] like Figure 2 and Figure 3 As shown, in one embodiment, a locking head 323 is provided at one end of the limiting rod 322 away from the shaft body 321 , and the diameter of the locking head 323 is larger than the inner diameter of the locking hole 312 .

[0037] It should be noted that the locking head 323 and the limiting rod 322 are an integrally formed structure. The limiting rod 322 is passed through the locking hole 312 to be screwed to the shaft body 321. The locking hole 312 is used to lock the locking head 323, so that the shaft body 321 is confined in the slide groove 311.

[0038] like Figure 3 As shown, in one embodiment, a top seat 324 is provided at one end of the shaft 321 close to the second cavity.

[0039] It should be noted that, in one embodiment, the top seat 324 and the shaft body 321 are an integrally formed structure. Furthermore, the diameter of the top seat 324 is larger than the diameter of the shaft body 321 . In this way, the top seat 324 can stably press the disc rack 21 .

[0040] like Figure 3 As shown, in one embodiment, a push block 325 is provided on a side surface of the top seat 324 away from the shaft body, and the push block 325 is used to push the disc rack 21.

[0041] It should be noted that since the top seat 324 needs to repeatedly press different disk racks 21, the pressed contact parts are prone to wear. In order to facilitate the replacement of worn parts, a top block 325 is set on the top seat 324 so that the top block 325 is pressed into contact with the disk rack 21.

[0042] In one embodiment, the softness of the top block 325 is lower than that of the tray frame 21. This prevents the top block 325 from being in rigid contact with the tray frame 21, thereby preventing the tray frame 21 from being deformed by compression. In one embodiment, the top block 325 is made of silicone.

[0043] like Figure 3 and Figure 5 As shown, in one embodiment, a protrusion 326 is provided on one side of the top block 325 close to the top seat 324 , and a groove 3241 is provided on one side of the top seat 324 close to the top block 325 , and the protrusion 326 is accommodated in the groove 3241 .

[0044] It should be noted that to facilitate replacement of the top block 325, a protrusion 326 is provided on the top block 325. The protrusion 326 and the top block 325 are integrally formed. Furthermore, a groove 3241 is provided on the top seat 324. When the protrusion 326 fits snugly within the groove 3241, the top block 325 and the top seat 324 are coaxially arranged. This facilitates quick positioning and installation of the top block 325 and the top seat 324. Furthermore, in one embodiment, the top block 325 is mounted to the top seat 324 via screws.

[0045] The above-mentioned embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in the present invention can be understood to include but not be limited to locking and fixing with screws / screws and welding. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. A high-stability steering wheel frame fixing structure, comprising a lower mold and an upper mold that can be engaged or separated with each other, wherein the lower mold has a first cavity formed therein for accommodating the steering wheel frame, and the upper mold has a second cavity formed therein, characterized in that: Also includes: A pressing assembly, which includes a sleeve, a sliding shaft and an elastic member. The sleeve is arranged on a side surface of the upper mold away from the lower mold. The sliding shaft is slidably arranged in the sleeve. One end of the sliding shaft is passed through the upper mold to extend into the second cavity. The other end of the sliding shaft is used to clamp the sleeve. The elastic member is respectively in contact with the sliding shaft and the sleeve. The elastic member is used to push the sliding shaft so that one end of the sliding shaft tends to approach the first cavity.

2. The high-stability steering wheel frame fixing structure according to claim 1, characterized in that: A sliding groove is provided in the sleeve, and the sliding shaft is adaptively slidably arranged in the sliding groove.

3. The high-stability steering wheel frame fixing structure according to claim 2, characterized in that: The sliding shaft includes a shaft body and a limiting rod. The shaft body is slidably arranged in the sliding groove. One end of the limiting rod is screwed to the shaft body, and the other end of the limiting rod is used to clamp the sleeve.

4. The high-stability steering wheel frame fixing structure according to claim 3, characterized in that: The top of the sleeve is further provided with a clamping hole connected with the sliding groove, and the limiting rod is passed through the clamping hole.

5. The high-stability steering wheel frame fixing structure according to claim 4, characterized in that: A locking head is provided at one end of the limiting rod away from the shaft body, and the diameter of the locking head is larger than the inner diameter of the locking hole.

6. The high-stability steering wheel frame fixing structure according to claim 3, characterized in that: A top seat is provided at one end of the shaft body close to the second cavity.

7. The high-stability steering wheel frame fixing structure according to claim 6, characterized in that: The top seat and the sliding shaft are an integrally formed structure.

8. The high-stability steering wheel frame fixing structure according to claim 7, characterized in that: A top block is provided on one side of the top seat away from the shaft body, and the top block is used to push the disc rack.

9. The high-stability steering wheel frame fixing structure according to claim 8, characterized in that: The softness of the top block is lower than that of the tray frame.

10. The high-stability steering wheel frame fixing structure according to claim 8, characterized in that: A convex portion is provided on one side of the top block close to the top seat, and a groove is provided on one side of the top seat close to the top block, and the convex portion is accommodated in the groove.