CN109403756B - Inner door handle and die for manufacturing same - Google Patents
Inner door handle and die for manufacturing same Download PDFInfo
- Publication number
- CN109403756B CN109403756B CN201811277492.3A CN201811277492A CN109403756B CN 109403756 B CN109403756 B CN 109403756B CN 201811277492 A CN201811277492 A CN 201811277492A CN 109403756 B CN109403756 B CN 109403756B
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- China
- Prior art keywords
- groove
- fixing plate
- forming
- lower die
- die fixing
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
- E05B85/10—Handles
- E05B85/12—Inner door handles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
Abstract
The invention provides an inner door handle, comprising: the shell is provided with a groove, a first through groove and a second through groove, the first through groove and the second through groove are respectively positioned on two sides of the groove, the first through groove is provided with a first groove wall, the second through groove is provided with a second groove wall, and the second through groove is provided with a left shaft seat and a right shaft seat; the technical scheme of the invention is as follows; there is also provided a mold for manufacturing the handle, comprising: the lower die base plate is provided with a lower die fixing plate, a first sliding block, a second sliding block, an oil cylinder, a fixing frame and a forming rod, the upper die base plate is provided with an upper die fixing plate and a cooling system, and the upper die fixing plate is provided with a forming convex surface corresponding to the forming concave surface; the pouring unit is arranged in the upper die base plate in a penetrating way and corresponds to the lower die fixing plate: the beneficial effects of the invention are as follows: the inner door handle is complex and ingenious in structure and shape, and the mold capable of manufacturing the handle and improving the quality and qualification rate of products is provided.
Description
Technical Field
The invention belongs to the technical field of automobile spare and accessory parts and production equipment, relates to an inner door handle, and further relates to a die for manufacturing the handle.
Background
An inner door handle is a component of an automobile and is used on an inner door, and the inner door handle is actually a shell structure, and is provided with a handle and is assembled on a vehicle door, so that the inner door handle is integrated.
The existing inner door handles are basically injection molded by a mold, the structures and styles of the inner door handles are various, the inner door handles with special shapes and structures are difficult to manufacture by the traditional mold, and even if the inner door handles are manufactured, the inner door handles cannot be qualified, and many flaws can exist on finished products.
Disclosure of Invention
The present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide an inner door handle and a mold for manufacturing the same.
The aim of the invention can be achieved by the following technical scheme: an interior door handle comprising: the shell, be provided with recess, first logical groove and second logical groove on the shell, first logical groove with the second logical groove is located respectively the both sides of recess, first logical groove has first cell wall, the second logical groove has the second cell wall, be provided with left axle bed and right axle bed on the second logical groove.
Preferably, the first groove wall is of a parallelogram structure, and a reinforcing part facing the first through groove is arranged on the first groove wall, and the reinforcing part comprises a frame-shaped reinforcing rib and a vertical reinforcing rib positioned in the frame-shaped reinforcing rib.
Preferably, the left shaft seat and the right shaft seat are respectively provided with a first shaft hole and a second shaft hole, and the horizontal height of the second shaft hole is higher than that of the first shaft hole.
Next, there is also provided a mold for manufacturing the handle, comprising:
the lower die seat plate is provided with a lower die fixing plate, a first sliding block, a second sliding block, an oil cylinder, a fixing frame and a forming rod, wherein the lower die fixing plate is provided with a forming concave surface, a first sliding way and a second sliding way, the first sliding way and the second sliding way are communicated with the forming concave surface, the shell is arranged in the forming concave surface, the first sliding way corresponds to the outer wall surface of the second groove wall, the second sliding way corresponds to the side wall surface of the second groove wall, the first sliding block and the second sliding block are respectively arranged in the first sliding groove and the second sliding groove, the fixing frame is arranged on the side part of the lower die seat plate, the oil cylinder is arranged on the fixing frame, the forming rod penetrates through the second sliding block and is connected with the oil cylinder, and the forming rod penetrates through the first shaft hole and the second shaft hole;
an upper die base plate provided with an upper die fixing plate and a cooling system, wherein the upper die fixing plate is provided with a molding convex surface corresponding to the molding concave surface;
and the pouring unit is arranged in the upper die base plate in a penetrating way and corresponds to the lower die fixing plate.
Preferably, the number of the molding concave surfaces is two, the molding concave surfaces are respectively positioned at the left side and the right side of the lower die fixing plate, the lower die fixing plate is provided with two arc-shaped flow passages with communicated end parts, the pouring units correspond to the arc-shaped flow passages, and the two arc-shaped flow passages extend to the two molding concave surfaces.
Preferably, two detachable inserts are arranged on the lower die fixing plate, two inserts form a feeding channel, the feeding channel is communicated with the forming concave surface, and the arc runner is communicated with the feeding channel.
Preferably, the concave forming surface is internally provided with a lug part and an annular groove, the lug part is positioned in the first through groove, the first groove wall is arranged in the annular groove, and the feeding channel is communicated with the annular groove.
Preferably, the convex block part is provided with a movable wedge rod in a penetrating way, the wedge rod is provided with a concave surface part corresponding to the reinforcing part, and the concave surface part is positioned on the inner side surface of the convex block part.
Preferably, the lower die fixing plate is provided with a forming frame, the forming frame is located in the second through groove, the forming frame is provided with a shaft seat, the left shaft seat is in abutting connection with the second sliding block, and the shaft seat is in abutting connection with the right shaft seat.
Preferably, the lower die fixing plate is provided with a V-shaped chute, two ends of the V-shaped chute are respectively connected with the two molding concave surfaces, two third sliding blocks are arranged in the V-shaped chute and are abutted against the outer wall surface of the first groove wall.
Compared with the prior art, the invention has the beneficial effects that:
1. provides an inner door handle with complex and ingenious structure and shape.
2. A mold capable of manufacturing the handle and improving the quality and yield of the product is provided.
Drawings
Fig. 1 is a schematic structural view of a mold according to the present invention.
Fig. 2 is a schematic structural view of the housing of the present invention.
Fig. 3 is a schematic view of the structure of the bottom of the housing of the present invention.
Fig. 4 is a schematic structural view of an upper die plate according to the present invention.
Fig. 5 is a schematic structural view of the lower die plate of the present invention.
Fig. 6 is a schematic structural view of the lower die fixing plate of the present invention.
FIG. 7 is a schematic view of the structure of the concave surface of the present invention.
100, grooves; 110. a first through groove; 111. a first groove wall; 112. frame-shaped reinforcing ribs; 113. vertical reinforcing ribs; 200. a second through slot; 210. a second groove wall; 220. a left shaft seat; 230. a right axle seat; 300. a lower die base plate; 310. a lower die fixing plate; 311. forming a concave surface; 312. an arc-shaped runner; 313. a bump portion; 314. a wedge rod; 320. an annular groove; 330. forming a frame; 331. a shaft body seat; 340. an insert; 341. a feed channel; 350. a first slideway; 351. a first slider; 360. a second slideway; 361. a second slider; 370. v-shaped sliding grooves; 371. a third slider; 380. a fixing frame; 381. an oil cylinder; 390. forming a rod; 400. an upper die base plate; 410. an upper die fixing plate; 420. a cooling system; 500. and (5) a pouring unit.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 2 and 3, an inner door handle includes: the shell is provided with a groove 100, a first through groove 110 and a second through groove 200, the first through groove 110 and the second through groove 200 are respectively located at two sides of the groove 100, the first through groove 110 is provided with a first groove wall 111, the second through groove 200 is provided with a second groove wall 210, and the second through groove 200 is provided with a left shaft seat 220 and a right shaft seat 230.
Preferably, the housing has three parts, including a groove 100, a first through groove 110 and a second through groove 200, where the groove 100 is in a concave structure, the first through groove 110 and the second through groove 200 are respectively located at two sides of the length direction of the groove 100, the first through groove 110 is located in the first groove wall 111, the second through groove 200 is located on the second groove wall 210, a left shaft seat 220 and a right shaft seat 230 are disposed on the second through groove 200, the left shaft seat 220 and the right shaft seat 230 are respectively located at two sides of the width direction of the second through groove 200, and are used for installing a handle, and in a practical structure, a notch is disposed on a side portion of the second groove wall 210, a left shaft seat 220 is disposed above the notch, and a long plate-shaped installation block is also disposed on an outer wall of the second groove wall 210, so that the structure shape of the inner door handle is complex and ingenious.
As shown in fig. 2 and 3, in the above embodiment, the first groove wall 111 has a parallelogram structure, and the first groove wall 111 is provided with a reinforcing part facing the first through groove 110, and the reinforcing part includes a frame-shaped reinforcing rib 112 and a vertical reinforcing rib 113 located in the frame-shaped reinforcing rib 112.
Preferably, the shape of the first groove wall 111 is similar to a parallelogram structure in a top view, and two opposite sides are oblique sides, and a reinforcing part is provided on the first groove wall 111 to strengthen the structural strength of the first groove wall 111, and the shape of the reinforcing part is relatively special, the frame-shaped reinforcing rib 112 is similar to an inverted trapezoid structure, the vertical reinforcing rib is located in the frame-shaped reinforcing rib 112, and the reinforcing part is located in the first through groove 110.
The reinforcing part needs to be arranged in the first through groove 110, so that a special shape structure is needed to be arranged for ejection, and the frame-shaped reinforcing rib 112 and the vertical reinforcing rib 113 are adopted, so that the actual ejection is convenient, the structure strength is very high, and the first groove wall 111 is prevented from being broken.
As shown in fig. 1, 2, 3, 4, 5, 6, and 7, in the above embodiment, the left shaft seat 220 and the right shaft seat 230 are respectively provided with a first shaft hole and a second shaft hole, and the second shaft hole has a higher level than the first shaft hole.
Preferably, the left and right shaft seats 230 are respectively provided with a first shaft hole and a second shaft hole, the heights of the two shaft holes are not horizontal, the horizontal height of the second shaft hole is higher than that of the first shaft hole, and the axis connecting line of the two shaft holes is in a slant shape.
The present invention relates to a door handle, and more particularly to a door handle with a handle structure for a door, which is capable of improving the smoothness and experience of a door when the door is opened.
Next, a mold for manufacturing the handle is disclosed, comprising:
a lower die holder plate 300 provided with a lower die fixing plate 310, a first sliding block 351, a second sliding block 361, an oil cylinder 381, a fixing frame 380 and a forming rod 390, wherein a forming concave 311, a first sliding way 350 and a second sliding way 360 are arranged on the lower die fixing plate 310, the first sliding way 350 and the second sliding way 360 are communicated with the forming concave 311, the shell is arranged in the forming concave 311, the first sliding way 350 corresponds to the outer wall surface of the second groove wall 210, the second sliding way 360 corresponds to the side wall surface of the second groove wall 210, the first sliding block 351 and the second sliding block 361 are respectively arranged in the first sliding groove and the second sliding groove, the fixing frame 380 is arranged at the side part of the lower die holder plate 300, the oil cylinder 381 is arranged on the fixing frame 380, the forming rod 390 is arranged in the second sliding block 361 in a penetrating way and is connected with the oil cylinder 381, and the forming rod 390 passes through the first shaft hole and the second shaft hole;
an upper die holder plate 400 provided with an upper die fixing plate 410 and a cooling system 420, wherein the upper die fixing plate 410 is provided with a molding convex surface corresponding to the molding concave surface 311;
and a pouring unit 500 disposed in the upper die holder 400 and corresponding to the lower die fixing plate 310.
It should be noted that, in the above-mentioned bracket shell, the die is required to be used for manufacturing, and the upper die base plate 400 of the lower die base plate 300 can be tightly attached together, so as to form an injection-molded cavity.
In addition, the existing mold is basically composed of an upper mold, a lower mold and a forming cavity, and the mold provided by the embodiment is actually a mold specially aiming at the door handle in the automobile body, can manufacture the door handle in the structure, and has the advantages of good quality and high qualification rate of the manufactured products.
Preferably, the lower die holder plate 300 is located right below the upper die holder plate 400, and the lower die holder plate 300 has a rectangular slot body therein, the lower die fixing plate 310 is disposed in the rectangular slot body, the first slider 351 and the second slider 361 are disposed on the lower die holder plate 300 and can slide toward the lower die fixing plate 310, the cylinder 381 is disposed on the side portion of the lower die holder plate 300 through the fixing frame 380, the first slide 350 is opened to the outer wall surface of the second slot wall 210 of the housing, the second slide 360 is opened to the side wall surface of the second slot wall 210, the first slider 351 can slide along the first slide slot and is abutted to the outer wall surface of the second slot wall 210, the second slider 361 can slide along the second slide slot and is abutted to the side wall surface of the second slot wall 210, the forming rod 390 is penetratingly disposed in the second slider 361, and one end of the forming rod 390 is connected with the piston of the cylinder 381, when the second slider is abutted to the side wall surface of the second slot wall 210, the cylinder 381 pushes the forming rod 390 so that the forming rod 390 can penetrate the first shaft hole and the second shaft hole 361 to form two shaft holes.
Preferably, the upper die plate seat actually includes an upper die fixing plate 410 and a cooling system 420, the molding convex surface and the molding concave surface 311 of the upper die fixing plate 410 are disposed up and down correspondingly, and the molding convex surface and the molding concave surface 311 are combined to form a molding cavity, the cooling system 420 is a plurality of water inlet structures for cooling the upper die plate seat, and when the cooling liquid enters the cooling system 420, heat of the upper die plate seat 400 can be taken away.
In the actual use process, the pouring unit 500 injects the melted material toward the molding concave 311, then the first slider 351 and the second slider 361 slide onto the molding concave 311, the molded housing is molded by a slider to form the outer wall surface of the second slot wall 210, the second slider 361 forms the side wall surface of the second slot wall 210, the piston of the cylinder 381 pushes, the molded rod 390 extends out from the second slider 361 and passes through the left shaft seat 220 and the right shaft seat 230, and thus the first shaft hole and the second shaft hole are molded; it should be noted that, the first shaft hole and the second shaft hole are oblique lines, so the oil cylinder 381 needs to be disposed obliquely upward, so the forming rod 390 can be inserted with a certain inclination, and two first shaft holes and second shaft holes with different heights are formed.
When ejecting, the piston rod of the oil cylinder 381 is reset, the molding rod 390 is pulled out from the first shaft hole and the second shaft hole, the first sliding block 351 and the second sliding block 361 slide away from the molding concave 311, and then the ejector rod passes through the lower die fixing plate 310 to eject the shell, so that the quality and the qualification rate of the product are improved.
As shown in fig. 1, 4, 5, 6, and 7, the number of the molding concave surfaces 311 is two and the molding concave surfaces 311 are respectively located at the left and right sides of the lower die fixing plate 310, the lower die fixing plate 310 is provided with two arc-shaped flow channels 312 with communicated ends, the pouring unit 500 corresponds to the arc-shaped flow channels 312, and the two arc-shaped flow channels 312 extend to the two molding concave surfaces 311.
Preferably, the lower die fixing plate 310 has two molding concave surfaces 311, so that two corresponding products can be molded at one time, the lower die fixing plate 310 has two arc-shaped runners 312, ends of the two arc-shaped runners 312 are connected together, the casting unit 500 injects material into the ends of the two arc-shaped runners 312, and the two arc-shaped runners 312 extend to the two molding surfaces, so that two products can be molded at one time.
As shown in fig. 4, 5, 6 and 7, on the basis of the above embodiment, two detachable inserts 340 are provided on the lower die fixing plate 310, two inserts 340 form a feeding channel 341, the feeding channel 341 is communicated with the forming concave 311, and the arc-shaped runner 312 is communicated with the feeding channel 341.
Preferably, each molding concave 311 corresponds to two inserts 340, the inserts 340 can be replaced, further, the lower die fixing plate 310 has two through holes, the inserts 340 are inserted into the through holes, the inner side surfaces of the two inserts 340 are provided with grooves 100, and the two grooves 100 are combined to form a feeding channel 341.
It should be noted that, in the existing shell production process, the feeding speed of the molten material has a great influence on the quality of the whole shell, once the speed of the material passing through the feeding channel 341 is too fast, problems occur in the welding line or the surface of the shell, so that the reject rate increases, and the feeding channel 341 is formed by adopting the insert 340 structure, so that not only is the replacement convenient, but also the corresponding feeding speed can be adjusted at any time, further, the caliber of the feeding channel 341 determines the feeding speed, the larger caliber is, the faster the feeding is, the slower the feeding is, and the insert 340 can be pulled out and replaced at any time in the through hole, and the insert 340 of the feeding channel 341 with different sizes is replaced.
As shown in fig. 4, 5, 6, and 7, in the above embodiment, the concave molding surface 311 is provided therein with a protruding portion 313 and an annular groove 320, the protruding portion 313 is located in the first through groove 110, the first groove wall 111 is disposed in the annular groove 320, and the feeding channel 341 is in communication with the annular groove 320.
Preferably, in order to form the first through groove 110 and the first groove wall 111, the protruding portion 313 and the annular groove 320 are specifically provided, the annular groove 320 is disposed around the edge of the protruding portion 313, and the feeding channel 341 is connected with the annular groove 320, that is, the melted material first enters the annular groove 320 to form the first groove wall 111, and then the whole shell is gradually formed, so that the control of the forming speed is relatively convenient, and the inlet is disposed at the annular groove 320, so that the material first spreads over the narrower annular groove 320, the feeding speed is further controlled, and the product quality is improved.
As shown in fig. 4, 5, 6, and 7, in the above embodiment, the protrusion 313 is provided with a movable wedge 314, the wedge 314 is provided with a concave portion corresponding to the reinforcement portion, and the concave portion is located on the inner side surface of the protrusion 313.
Preferably, the protruding block portion 313 is actually provided with an inclined hole structure, the wedge rod 314 is inserted into the inclined hole, the side surface of the end portion of the wedge rod 314 is provided with a concave surface portion, a groove 100 consistent with the shape of the frame-shaped reinforcing rib 112 is formed between the concave surface portion and the side surface of the protruding block portion 313, the concave surface portion can also present the vertical reinforcing rib 113, the wedge rod 314 obliquely descends during forming, the end portion of the wedge rod 314 is flush with the protruding block portion 313, and the wedge rod 314 does not obstruct ejection of the shell.
As shown in fig. 4, 5, 6, and 7, based on the above embodiments, the lower die fixing plate 310 is provided with a forming frame 330, the forming frame 330 is located in the second through slot 200, the forming frame 330 is provided with a shaft seat 331, the left shaft seat 220 is in abutting connection with the second slider 361, and the shaft seat 331 is in abutting connection with the right shaft seat 230.
Preferably, the forming frame 330 is actually a component for assisting the forming of the second through slot 200, and the axle base 331 abuts against the right axle base 230, so that the quality of the right axle base 230 can be improved during forming.
As shown in fig. 5, in the above embodiment, a V-shaped chute 370 is provided on the lower die fixing plate 310, two ends of the V-shaped chute 370 are respectively connected with two of the molding concave surfaces 311, two third sliding blocks 371 are provided in the V-shaped chute 370, and the third sliding blocks 371 are abutted against the outer wall surface of the first groove wall 111.
It should be noted here that, in order to be able to present the first groove walls 111 of the two housings at the same time, a V-shaped groove 370 is provided in particular, and further, the first groove walls 111 of the two housings are actually opposite, that is to say, the structure of the V-shaped groove 370 is able to provide two third sliders 371 at the same time and to machine the corresponding first groove walls 111.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (1)
1. A mold for manufacturing an inner door handle, the inner door handle comprising: the shell is provided with a groove, a first through groove and a second through groove, the first through groove and the second through groove are respectively positioned on two sides of the groove, the first through groove is provided with a first groove wall, the second through groove is provided with a second groove wall, the second through groove is provided with a left shaft seat and a right shaft seat, the first groove wall is of a parallelogram structure, the first groove wall is provided with a reinforcing part facing the first through groove, the reinforcing part comprises a frame-shaped reinforcing rib and a vertical reinforcing rib positioned in the frame-shaped reinforcing rib, the left shaft seat and the right shaft seat are respectively provided with a first shaft hole and a second shaft hole, and the horizontal height of the second shaft hole is higher than that of the first shaft hole;
characterized by comprising the following steps:
the lower die fixing plate is provided with a forming concave surface, a first slide rail and a second slide rail, the first slide rail and the second slide rail are communicated with the forming concave surface, the shell is arranged in the forming concave surface, the first slide rail corresponds to the outer wall surface of the second groove wall, the second slide rail corresponds to the side wall surface of the second groove wall, the first slide rail and the second slide rail are respectively arranged in the first slide rail and the second slide rail, the fixing frame is arranged on the side part of the lower die fixing plate, the oil cylinder is arranged on the fixing frame, the forming rod penetrates through the second slide rail and is connected with the oil cylinder, and the forming rod penetrates through the first shaft hole and the second shaft hole;
an upper die base plate provided with an upper die fixing plate and a cooling system, wherein the upper die fixing plate is provided with a molding convex surface corresponding to the molding concave surface;
the pouring unit is arranged in the upper die base plate in a penetrating manner and corresponds to the lower die fixing plate;
the number of the molding concave surfaces is two, the molding concave surfaces are respectively positioned at the left side and the right side of the lower die fixing plate, two arc-shaped flow passages with communicated end parts are arranged on the lower die fixing plate, the pouring units correspond to the arc-shaped flow passages, and the two arc-shaped flow passages extend to the two molding concave surfaces;
two detachable inserts are arranged on the lower die fixing plate, two inserts form a feeding channel, the feeding channel is communicated with the forming concave surface, and the arc-shaped runner is communicated with the feeding channel;
the concave forming surface is internally provided with a lug part and an annular groove, the lug part is positioned in the first through groove, the first groove wall is arranged in the annular groove, and the feeding channel is communicated with the annular groove;
the convex block part is penetrated with a movable wedge rod, the wedge rod is provided with a concave surface part corresponding to the reinforcing part, and the concave surface part is positioned on the inner side surface of the convex block part;
the lower die fixing plate is provided with a forming frame, the forming frame is positioned in the second through groove, the forming frame is provided with a shaft seat, the left shaft seat is in abutting connection with the second sliding block, and the shaft seat is in abutting connection with the right shaft seat;
the lower die fixing plate is provided with a V-shaped chute, two ends of the V-shaped chute are respectively connected with two forming concave surfaces, two third sliding blocks are arranged in the V-shaped chute and are abutted to the outer wall surface of the first groove wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811277492.3A CN109403756B (en) | 2018-10-30 | 2018-10-30 | Inner door handle and die for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811277492.3A CN109403756B (en) | 2018-10-30 | 2018-10-30 | Inner door handle and die for manufacturing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109403756A CN109403756A (en) | 2019-03-01 |
| CN109403756B true CN109403756B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811277492.3A Active CN109403756B (en) | 2018-10-30 | 2018-10-30 | Inner door handle and die for manufacturing same |
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| CN (1) | CN109403756B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110815732A (en) * | 2019-11-04 | 2020-02-21 | 宁波帅特龙集团有限公司 | Inner door handle shell mold |
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| 铝型材在客车和专用汽车(挂车)上的应用;倪元;王春阳;;商用汽车(第24期);全文 * |
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| CN109403756A (en) | 2019-03-01 |
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