CN210174690U - Magnesium alloy back frame - Google Patents
Magnesium alloy back frame Download PDFInfo
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- CN210174690U CN210174690U CN201921146388.0U CN201921146388U CN210174690U CN 210174690 U CN210174690 U CN 210174690U CN 201921146388 U CN201921146388 U CN 201921146388U CN 210174690 U CN210174690 U CN 210174690U
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- hole wall
- skeleton
- boss
- magnesium alloy
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Abstract
The utility model discloses a magnesium alloy back skeleton, its structure that not only simplifies die casting die correspondingly has improved the assembly precision of seat headrest and magnesium alloy back skeleton moreover. The utility model provides a magnesium alloy backrest skeleton, includes the skeleton body, the skeleton body has backplate and curb plate, and the curb plate stretches out forward for the backplate, and the top of skeleton body is equipped with headrest pipe mounting hole, the structural hole of drawing of patterns form around headrest pipe mounting hole adopts, and skeleton body and headrest pipe mounting hole adopt whole die-casting shaping.
Description
Technical Field
The utility model belongs to the technical field of car seat, specifically speaking relates to a magnesium alloy back skeleton.
Background
As shown in fig. 5, the current seat back frame generally includes a headrest support 1 and two backrest side plates 2, the two backrest side plates 2 are connected to two ends of the headrest support 1, two headrest guide pipes 3 are provided on the headrest support 1, a headrest mounting groove is provided on each headrest guide pipe 3, an opening of the headrest mounting groove is upward, two mounting rods are provided on the seat headrest, the seat headrest mounting rods are inserted into the corresponding headrest mounting grooves, and the headrest is mounted on the backrest frame. The lower connecting plate 4 is welded with the backrest side plate 2.
When the seat back framework with the structure is manufactured by adopting a magnesium alloy die-casting process, the die of the seat back framework needs to be provided with a core-pulling structure aiming at the headrest mounting groove, so that the structural complexity of the die is increased, the cost of the die is increased, the obtained headrest mounting groove has a die-pulling angle, and the assembly precision of the headrest and the headrest mounting groove is invisibly reduced.
Disclosure of Invention
The utility model aims at providing a magnesium alloy back skeleton, its structure that not only simplifies die casting die correspondingly has improved the assembly precision of seat headrest with magnesium alloy back skeleton moreover.
In order to solve the technical problem, the utility model discloses a technical scheme is:
the utility model provides a magnesium alloy backrest skeleton, includes the skeleton body, the skeleton body has backplate and curb plate, and the curb plate stretches out forward for the backplate, and the top of skeleton body is equipped with headrest pipe mounting hole, the structural hole of drawing of patterns form around headrest pipe mounting hole adopts, and skeleton body and headrest pipe mounting hole adopt whole die-casting shaping.
On the basis of the above scheme and as a preferable scheme of the scheme: the structural hole comprises an upper front hole wall, an upper rear hole wall, a lower front hole wall and a lower rear hole wall which are directly formed by a cavity, wherein the upper front hole wall is arranged on a side plate, the arc surface of the upper front hole wall faces backwards, a hollow part I is arranged at the rear end of the side plate corresponding to the upper front hole wall, so that the arc surface of the upper front hole wall is in an open shape, the upper rear hole wall is arranged on the inner side of a back plate, the arc surface of the upper rear hole wall faces forwards, the arc surface of the upper rear hole wall faces backwards, the lower front hole wall is connected with the back plate, the arc surface of the lower front hole wall faces backwards, a hollow part II is arranged at the position of the back plate corresponding to the lower front hole wall, so that the arc surface of the lower front hole wall faces forwards, the lower rear hole wall is arranged on the side plate, and the arc surface of.
On the basis of the above scheme and as a preferable scheme of the scheme: the upper front hole wall, the upper rear hole wall, the lower front hole wall and the lower rear hole wall are sequentially arranged from top to bottom.
On the basis of the above scheme and as a preferable scheme of the scheme: the thickness of the upper front hole wall is thickened relative to the thickness of the side plate.
On the basis of the above scheme and as a preferable scheme of the scheme: and a first reinforcing rib is arranged on the outer side surface of the side plate.
On the basis of the above scheme and as a preferable scheme of the scheme: the medial surface of skeleton body is equipped with the second strengthening rib, and the part of second strengthening rib is connected with the backplate, and another part of second strengthening rib is connected with the curb plate.
On the basis of the above scheme and as a preferable scheme of the scheme: skeleton body left side position and right side position all are equipped with first boss, and first boss is located the inboard of skeleton body, and the position for first boss is equipped with the mounting hole that supplies seat top waist regulator to install on the skeleton body.
On the basis of the above scheme and as a preferable scheme of the scheme: the bottom of the both sides of skeleton body is equipped with the second boss, and the second boss is located the inboard of skeleton body, is equipped with the hole that supplies the seat hypoplastron to connect on the skeleton body for the position of second boss.
On the basis of the above scheme and as a preferable scheme of the scheme: the second boss is connected with the second reinforcing rib.
On the basis of the above scheme and as a preferable scheme of the scheme: the bottom of the both sides of skeleton body is equipped with the torsion bar installation department, the torsion bar installation department includes the boss, is equipped with logical groove on the boss, is equipped with on the boss and links up the bridge, links up the bridge and strides and locate logical groove, links up the height that highly is less than logical groove of bridge, and the opening that supplies the torsion bar installation is found out to the upper portion of boss, the lower part of boss and the inside wall that links up the bridge.
Compared with the prior art, the utility model outstanding and profitable technological effect is:
the utility model discloses a magnesium alloy back skeleton, its headrest pipe mounting hole have adopted the structural hole of back drawing of patterns form for headrest pipe mounting hole does not have drawing of patterns angle in upper and lower direction, need not the later stage reprocessing, can improve the assembly precision with the seat headrest. In addition, due to the adoption of the structural holes in the front and back demoulding mode, the die-casting die for manufacturing the magnesium alloy backrest framework does not need to be correspondingly provided with a core-pulling structure, so that the die cost is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a sectional view taken along line a-a in fig. 2.
Fig. 4 is a cross-sectional view B-B of fig. 2.
Fig. 5 is a schematic structural view of a seat back frame of a conventional structure.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step, based on the given embodiments, fall within the scope of protection of the present application.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
In the description of the present application, the "front" and "rear" directions are defined based on the relative positions of the back plate and the side plates, and the direction of the side plate is referred to as "front" and the direction of the back plate is referred to as "rear".
In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.
The utility model discloses a magnesium alloy backrest skeleton, including skeleton body 1, skeleton body 1 has backplate 11 and curb plate 12, and curb plate 12 distributes on the upper portion and the both sides of backplate 11, as shown in fig. 1, fig. 2. The side plates 12 project forward relative to the back plate 11. The top of the framework body 1 is provided with a headrest conduit mounting hole 2. In a specific application, the headrest guide pipe mounting hole 2 is used for mounting an assembly (seat headrest). The headrest guide pipe mounting hole 2 is a structural hole in a front-back demoulding form, when demoulding is carried out, the demoulding direction of the structural hole is the same as that of the framework body 1, and the framework body 1 and the headrest guide pipe mounting hole 2 are integrally formed in a die-casting mode.
It should be pointed out that the utility model discloses a magnesium alloy back skeleton foundation member adopts whole die-casting shaping, and the screw thread of the screw hole for assembly on it then obtains through other screw thread processing technology.
In one embodiment, as shown in fig. 1-3, the structural holes include an upper front hole wall 21, an upper rear hole wall 22, a lower front hole wall 23, and a lower rear hole wall 24 formed directly from the mold cavity. That is, the structural hole includes an upper front hole wall 21, an upper rear hole wall 22, a lower front hole wall 23, and a lower rear hole wall 24, which are integrally formed with the frame body 1 and are offset from each other in the height direction of the headrest conduit mounting hole 2. On the radial section of the headrest conduit mounting hole 2, the edge part of the headrest conduit mounting hole 2 constructed by the arc surface 211 of the upper front hole wall 21 is not more than a semicircle and is open, so that the upper front hole wall 21 can be formed by a cavity constructed by a movable die and a fixed die. Similarly, in the radial section of the headrest guide tube mounting hole 2, the edge portion of the headrest guide tube mounting hole 2 formed by the circular arc surface 221 of the upper rear hole wall 22 is not more than a semicircle and is open, and thus, the upper rear hole wall 22 can be formed by a cavity formed by a movable mold and a fixed mold. On the radial section of the headrest conduit mounting hole 2, the edge part of the headrest conduit mounting hole 2 constructed by the arc surface 231 of the lower front hole wall 23 is not more than a semicircle and is open, and therefore, the lower front hole wall 23 is formed by a cavity constructed by a movable die and a fixed die. On the radial section of the headrest conduit mounting hole 2, the edge part of the headrest conduit mounting hole 2 constructed by the arc surface 241 of the lower back hole wall 24 is not more than a semicircle and is open, so that the lower back hole wall 24 can be formed by a cavity constructed by a movable die and a fixed die.
By adopting the structure hole with the structure, when a product is demoulded, the demoulding of the product can be finished according to the rear end demoulding direction and the front end demoulding direction given in figure 3.
With reference to fig. 1, 2, and 3, the upper front hole wall 21 is disposed on the side plate 12, the arc surface 211 of the upper front hole wall 21 faces rearward, and the side plate 12 has a first hollow 210 at a rear end corresponding to the upper front hole wall 21 to make the arc surface 211 of the upper front hole wall 21 open, the upper rear hole wall 22 is disposed on the inner side of the back plate 11, the arc surface 221 of the upper rear hole wall 22 faces forward, and the arc surface 221 of the upper rear hole wall 22 is open, the lower front hole wall 23 is connected to the back plate 11, the arc surface of the lower front hole wall 23 faces rearward, and the rear plate 11 has a second hollow 230 at a position corresponding to the lower front hole wall 23 to make the arc surface 231 of the lower front hole wall 23 open, the lower rear hole wall 24 is disposed on the side plate 12, the arc surface 241 of the lower rear hole wall 24 faces forward, and the arc surface 241 of the lower rear hole wall 24 is open.
Thus, when the magnesium alloy backrest framework is manufactured by adopting the die casting process, a core-pulling structure arranged for forming the headrest conduit mounting hole 2 is not required to be arranged on the used die, and the die cost is reduced. For the magnesium alloy backrest framework, the upper direction and the lower direction of the headrest conduit mounting hole 2 do not have a demoulding angle, and later-stage reprocessing is not needed, so that the assembly precision of the headrest can be improved, and the cost is saved.
In one embodiment, as shown in fig. 3, the upper front hole wall 21, the upper rear hole wall 22, the lower front hole wall 23 and the lower rear hole wall 24 are sequentially arranged from top to bottom. The headrest conduit mounting hole 2 is constructed by the arc surface 211 of the upper front hole wall, the arc surface 221 of the upper rear hole wall, the arc surface 231 of the lower front hole wall and the arc surface 241 of the lower rear hole wall. In a specific application, after the assembly part is inserted into the headrest conduit mounting hole 2, the arc surface 211 of the upper front hole wall 21, the arc surface 221 of the upper rear hole wall 22, the arc surface 231 of the lower front hole wall 23 and the arc surface 241 of the lower rear hole wall 24 respectively adhere to the assembly part from the front to the rear direction at different heights, and the headrest conduit is hooped in the whole circumferential direction, so that the assembly part is assembled with the headrest conduit mounting hole 2.
In one embodiment, as shown in FIG. 2, the thickness of the upper front aperture wall is thickened relative to the thickness of the side panel. Thereby ensuring the strength of the upper front hole wall.
In this embodiment, the outer side surface of the side plate 12 is provided with a first reinforcing rib 31; the inner side surface of the framework body 1 is provided with a second reinforcing rib 32, a part of the second reinforcing rib 32 is connected with the back plate 11, and the other part of the second reinforcing rib 32 is connected with the side plate 12. Through the structure that sets up the strengthening rib, improve the bulk strength of magnesium alloy back skeleton, accomplish the design of lightweight promptly, also can reach the design intensity that satisfies the user demand.
In an embodiment, the first bosses 4 are disposed at the left side and the right side of the framework body 1, the first bosses are disposed at the inner side of the framework body 1, and the framework body 1 is provided with mounting holes 41 at positions corresponding to the first bosses 4. The mounting hole 41 is processed with screw threads for mounting the seat back adjuster 5.
By adopting the structure, the magnesium alloy backrest framework does not need to be additionally provided with a bracket for mounting the seat waist-supporting regulator 5, so that the number of parts is reduced.
In an embodiment, the bottom of the two sides of the frame body 1 is provided with a second boss 6, the second boss is located on the inner side of the frame body 1, a hole 61 is arranged on the frame body 1 at a position corresponding to the second boss 6, and the hole is processed with a screw thread for screwing a bolt 8 for connecting the seat lower plate and the magnesium alloy backrest frame.
By adopting the structure, the magnesium alloy backrest framework does not need to be additionally provided with nuts, so that the number of parts is reduced, and the strength of the bottom of the backrest is increased.
In this embodiment, the second boss 6 is connected to the second reinforcing bead 32. The strength is improved through the structure, so that the lower plate of the seat and the magnesium alloy backrest framework are reliably connected.
The bottom of the two sides of the framework body 1 is provided with a torsion bar mounting part 7 for mounting a torsion bar 9, so that the magnesium alloy backrest framework does not need to be additionally provided with a bracket, and the number of parts is reduced. In this embodiment, the torsion bar mounting portion includes a boss 71, a through groove 72 is formed on the boss 71, an engagement bridge 73 is formed on the boss 71, the engagement bridge is spanned by the through groove, the height of the engagement bridge is smaller than that of the through groove, and an opening 70 for mounting the torsion bar 9 is formed by an upper portion 711 of the boss 71, a lower portion 712 of the boss 71, and an inner side wall 731 of the engagement bridge 73. The torsion bar mounting part with the structure can be manufactured in a mode of front and back demoulding and is integrally formed with the framework body. It will be appreciated that, because of the front-to-back draft, an opening for the torsion beam to fit can be obtained that has no draft angle in the axial direction.
As shown in the drawings, the rear end draft angle α 1 of the top surface 721 of the through slot 72 is 3.4 °, and the front end draft angle α 2 of the top surface 732 of the bridge 73 is 3.4 °.
The magnesium alloy backrest framework provided by the embodiment is of a central plane symmetric structure, so that the main driver and the auxiliary driver can share the auxiliary magnesium alloy backrest framework, and the cost of the die can be reduced.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. The utility model provides a magnesium alloy backrest skeleton, includes the skeleton body, the skeleton body has backplate and curb plate, and the curb plate stretches out forward for the backplate, and the top of skeleton body is equipped with headrest pipe mounting hole, its characterized in that: the headrest guide pipe mounting holes are structural holes in a front-back demolding mode, and the framework body and the headrest guide pipe mounting holes are integrally formed in a die-casting mode.
2. The magnesium alloy backrest skeleton of claim 1, wherein: the structural hole comprises an upper front hole wall, an upper rear hole wall, a lower front hole wall and a lower rear hole wall which are directly formed by a cavity, wherein the upper front hole wall is arranged on a side plate, the arc surface of the upper front hole wall faces backwards, a hollow part I is arranged at the rear end of the side plate corresponding to the upper front hole wall, so that the arc surface of the upper front hole wall is in an open shape, the upper rear hole wall is arranged on the inner side of a back plate, the arc surface of the upper rear hole wall faces forwards, the arc surface of the upper rear hole wall faces backwards, the lower front hole wall is connected with the back plate, the arc surface of the lower front hole wall faces backwards, a hollow part II is arranged at the position of the back plate corresponding to the lower front hole wall, so that the arc surface of the lower front hole wall faces forwards, the lower rear hole wall is arranged on the side plate, and the arc surface of.
3. The magnesium alloy backrest skeleton of claim 2, wherein: the upper front hole wall, the upper rear hole wall, the lower front hole wall and the lower rear hole wall are sequentially arranged from top to bottom.
4. The magnesium alloy backrest skeleton of claim 2, wherein: the thickness of the upper front hole wall is thickened relative to the thickness of the side plate.
5. The magnesium alloy backrest skeleton of claim 1, wherein: and a first reinforcing rib is arranged on the outer side surface of the side plate.
6. The magnesium alloy backrest skeleton of claim 1, wherein: the medial surface of skeleton body is equipped with the second strengthening rib, and the part of second strengthening rib is connected with the backplate, and another part of second strengthening rib is connected with the curb plate.
7. The magnesium alloy backrest skeleton of claim 1, wherein: skeleton body left side position and right side position all are equipped with first boss, and first boss is located the inboard of skeleton body, and the position for first boss is equipped with the mounting hole that supplies seat top waist regulator to install on the skeleton body.
8. The magnesium alloy backrest skeleton of claim 1, wherein: the bottom of the both sides of skeleton body is equipped with the second boss, and the second boss is located the inboard of skeleton body, is equipped with the hole that supplies the seat hypoplastron to connect on the skeleton body for the position of second boss.
9. The magnesium alloy backrest skeleton of claim 8, wherein: the second boss is connected with the second reinforcing rib.
10. The magnesium alloy backrest skeleton of claim 1, wherein: the bottom of the both sides of skeleton body is equipped with the torsion bar installation department, the torsion bar installation department includes the boss, is equipped with logical groove on the boss, is equipped with on the boss and links up the bridge, links up the bridge and strides and locate logical groove, links up the height that highly is less than logical groove of bridge, and the opening that supplies the torsion bar installation is found out to the upper portion of boss, the lower part of boss and the inside wall that links up the bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921146388.0U CN210174690U (en) | 2019-07-19 | 2019-07-19 | Magnesium alloy back frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921146388.0U CN210174690U (en) | 2019-07-19 | 2019-07-19 | Magnesium alloy back frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210174690U true CN210174690U (en) | 2020-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921146388.0U Active CN210174690U (en) | 2019-07-19 | 2019-07-19 | Magnesium alloy back frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210174690U (en) |
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2019
- 2019-07-19 CN CN201921146388.0U patent/CN210174690U/en active Active
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