CN216553508U - Low-cost lightweight electric stay bar structure - Google Patents
Low-cost lightweight electric stay bar structure Download PDFInfo
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- CN216553508U CN216553508U CN202122799076.3U CN202122799076U CN216553508U CN 216553508 U CN216553508 U CN 216553508U CN 202122799076 U CN202122799076 U CN 202122799076U CN 216553508 U CN216553508 U CN 216553508U
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Abstract
The utility model relates to a low-cost and light-weight electric stay bar structure which comprises a motor side ball socket, a motor side buffer sleeve, a motor reducer assembly, a reducer side buffer sleeve, a bearing seat, a bearing, a stop ring, an E-shaped snap spring, a shaft sleeve, a sealing ring, a large spring, a lead screw nut, a lead screw guide tube, an outer tube, an inner tube, a spring side ball socket assembly and the like. The motor side ball cup is connected with the outer tube through laser welding, the bearing seat is connected with the outer tube through laser welding, and parts such as a motor reducer are placed in a cavity formed by the outer tube, the ball cup seat and the bearing seat. Compared with the traditional electric stay rod, the electric stay rod saves a motor sleeve, a main part of a spring supporting tube and other related parts, lightens the weight of an electric stay rod assembly, reduces the cost and improves the competitiveness of a product.
Description
Technical Field
The utility model relates to the field of electric stay bars of automobile tail doors, in particular to a low-cost and light-weight electric stay bar structure.
Background
With the rapid development of automobile technologies, more and more automobile technologies develop towards the direction of electric intellectualization, so under the background, most automobile tail doors also have the original manual door opening and closing upgrading to form an electric door opening and closing system, and the automobile using experience of customers is greatly improved. The electric tail gate system in the market at present is driven by an electric support rod, the electric support rod mainly comprises a motor, a reduction gearbox, a damper, a bearing, a motor sleeve, a screw rod guide pipe, a large spring, a spring support pipe, an inner pipe, an outer pipe and the like, the motor power drives the screw rod to rotate after passing through the reduction gearbox, and the screw rod converts the rotary motion into linear motion so as to drive the tail gate to be opened and closed. At present, most of electric stay bar structures seal main parts such as a motor, a speed reducer, a bearing and the like in a motor sleeve in a buckling and pressing mode, the motor sleeve is arranged in the outer tube, and the waterproof effect cannot be achieved due to the unsealed buckling and pressing mode, therefore, the inner part of the motor sleeve pipe needs to be added with parts such as O-shaped rings, sealing gaskets and the like to achieve the aim of water prevention, the number of the parts is increased, the cost is increased, the weight of the assembly is increased, this is extremely disadvantageous for product competitiveness in the large context of low-cost and lightweight automotive design, moreover, because the motor sleeve is a metal part, the surface is generally prevented from being corroded by electroplating electrophoresis, however, after the motor sleeve is buckled, the surface coating at the buckling point is damaged by pulling, and the metal body is easy to corrode and break after being leaked, so that the function failure of the whole electric stay bar assembly is caused. In addition, the inner ring of the large spring of the traditional electric stay bar is sleeved on the spring support tube instead of the screw rod guide tube, namely an additional part spring support tube is required to be added, so that the weight and the cost of the assembly are increased undoubtedly, and the competitiveness of the product is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a low-cost and light-weight electric stay bar structure, which omits two high-cost and high-weight parts of a metal motor sleeve and a spring support tube and other joint parts such as O-shaped ring sealing gaskets, reduces the cost of a product, improves the competitiveness of the product, overcomes the defect that a buckling point is easy to corrode and break after the traditional electric stay bar motor sleeve is buckled, and greatly improves the market competitiveness of the product by using less parts and lighter product weight at the present that the automobile design requires light weight.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a low-cost light-weight electric stay bar structure comprises a motor side ball socket, a motor reducer assembly, a bearing seat, a bearing, a screw rod, a large spring, a screw rod nut, a screw rod guide pipe, a terminal retainer ring, an outer pipe, an inner pipe and a spring side ball socket assembly; the method is characterized in that: the motor side ball head seat is connected with one end of the outer pipe; the outer pipe is provided with an inner wall thick end and an inner wall thin end, an inner step is designed at the transition position of the inner walls of the inner wall thick end and the inner wall thin end, a bearing seat is arranged in the outer pipe, a step is also arranged outside the bearing seat, and the step of the bearing seat is matched with the inner step of the outer pipe; a motor reducer assembly and a bearing are also arranged between the motor side ball head seat and the bearing seat in the outer pipe, the outer ring of the bearing is in interference fit with the inner hole of the bearing seat, and the inner ring of the bearing is in interference fit with the screw rod; one end of the screw rod is matched and connected with the motor reducer assembly and transmits power; a screw nut is screwed on the screw rod, and the other end of the screw rod is connected with a terminal check ring; one end of the screw rod guide pipe is connected with the screw rod nut, and the other end of the screw rod guide pipe is connected with the spring side ball head seat assembly; the inner pipe is sleeved outside the thin end of the inner wall of the outer pipe, and the lower end of the inner pipe is connected with the spring side ball socket assembly and can move up and down along with the spring side ball socket assembly; the large spring is positioned in a cavity formed among the outer pipe, the inner pipe and the screw rod guide pipe, one end of the large spring is supported on the bearing seat, and one end of the large spring is supported on the spring seat ball seat assembly.
The low-cost lightweight electric stay bar structure is characterized in that: the motor side ball cup seat is connected with one end of the outer pipe through laser welding, the motor side ball cup seat and the outer pipe are made of plastic materials, the outer pipe is a light-transmitting piece, and the motor side ball cup seat is a light-absorbing piece.
Low-cost lightweight electronic vaulting pole structure, its characterized in that: the motor side ball seat is provided with a bulge for laser welding, and the motor side ball seat is in laser welding with the inner wall of the outer pipe through the bulge for laser welding.
The low-cost lightweight electric stay bar structure is characterized in that: the bearing seat is connected with the outer pipe through laser welding, the bearing seat is made of plastic materials, the outer pipe is a light-transmitting part, and the bearing seat is a light-absorbing part.
The low-cost lightweight electric stay bar structure is characterized in that: the bearing seat is provided with a bulge for laser welding, and the bearing seat is in laser welding with the inner wall of the outer tube through the bulge for laser welding.
The low-cost lightweight electric stay bar structure is characterized in that: a motor side buffer sleeve and a speed reducer side buffer sleeve are further arranged between the motor side ball head seat and the bearing seat in the outer pipe, and the motor side buffer sleeve and the speed reducer side buffer sleeve are respectively arranged at two ends of the motor speed reducer assembly and are matched with the inner wall of the outer pipe to play a role in shock absorption.
The low-cost lightweight electric stay bar structure is characterized in that: a snap spring, a sealing ring, a stop ring and a shaft sleeve are also arranged between the motor side ball head seat and the bearing seat in the outer pipe; the inner hole of the shaft sleeve is in interference fit with the screw rod, the outer diameter of the shaft sleeve is interfered with the lip edge of the sealing ring, and the outer diameter of the sealing ring is interfered with the inner hole of the bearing seat, so that the sealing and waterproof effects are achieved; the stop ring is positioned between the motor reducer assembly and the bearing and used for limiting the axial movement of the bearing; the clamp spring is positioned in a groove on the spline side of the screw rod, so that the axial movement of the screw rod is limited, and the screw rod can only do rotary movement.
The low-cost lightweight electric stay bar structure is characterized in that: the clamp spring is an E-shaped clamp spring.
The low-cost lightweight electric stay bar structure is characterized in that: the end face of the inner pipe is clamped between the large spring and the spring seat ball seat assembly and moves along with the large spring in a telescopic mode, and the large spring moves along with the screw rod guide pipe in a telescopic mode.
The low-cost lightweight electric stay bar structure is characterized in that: one end of the screw rod is matched with an inner hole spline of the motor reducer assembly through a spline structure to transmit power.
The utility model has the following advantages:
the utility model directly connects the motor side ball socket, the bearing seat and the outer tube in a plastic laser welding mode, and the traditional connection mode of the electric support rod is that related parts such as a motor, a speed reducer, a bearing and the like are firstly installed in a metal motor sleeve, and the motor sleeve, the ball socket, the electrode sleeve and the bearing seat are connected in a buckling and pressing mode. In addition, one end of the outer pipe is reduced and thinned, and a spring supporting pipe part is omitted in the arrangement mode that the inner pipe is arranged outside the outer pipe, so that the electric stay bar assembly product is further simplified and optimized on the premise of meeting practical requirements, the weight of the product is reduced to the maximum extent, and the cost is reduced.
Drawings
FIG. 1 is a cross-sectional view of a preferred embodiment of the present invention.
Fig. 2 is a partially enlarged view of a portion B in fig. 1.
Fig. 3 is an exploded perspective view of the transmission part in a preferred embodiment of the present invention.
Fig. 4 is a perspective view of a motor-side ball cup in a preferred embodiment of the present invention.
Fig. 5 is a perspective view of a bearing housing in a preferred embodiment of the utility model.
Figure 6 is a cross-sectional view of an outer tube in a preferred embodiment of the utility model.
1-motor side ball cup, 2-motor side buffer sleeve, 3-motor reducer assembly, 4-reducer side buffer sleeve, 5-snap spring, 6-bearing seat, 7-sealing ring, 8-stop ring, 9-bearing, 10-shaft sleeve, 11-screw rod, 12-large spring, 13-screw rod nut, 14-screw rod guide tube, 15-terminal retainer ring, 16-inner tube, 17-outer tube, 18-spring side ball cup assembly, 101-projection for laser welding, 161-inner step, 301-limit groove, 601-projection for laser welding, 602-limit boss.
Detailed Description
Specific embodiments of the present invention will be described below with reference to the accompanying drawings.
Please refer to fig. 1-6, which are schematic structural views of a preferred embodiment of the low-cost and light-weight electric brace structure of the present invention. As shown in the figure, the device comprises a motor side ball socket 1, a motor side buffer sleeve 2, a motor reducer assembly 3 (namely comprising a motor and a reducer), a reducer side buffer sleeve 4, a snap spring 5, a bearing seat 6, a sealing ring 7, a stop ring 8, a bearing 9, a shaft sleeve 10, a screw rod 11, a large spring 12, a screw rod nut 13, a screw rod guide pipe 14, a terminal check ring 15, an outer pipe 16, an inner pipe 17 and a spring side ball socket assembly 18. Wherein:
the motor-side ball mount 1 is provided at one end (upper end in fig. 1) of the outer tube 16. As shown in fig. 1 and 4, the motor-side socket 1 is connected to one end of the outer tube 16 by laser welding, the motor-side socket 1 and the outer tube 16 are both made of plastic, wherein the outer tube 16 is a light-transmitting member, and the motor-side socket 1 is a light-absorbing member, and as an embodiment, the motor-side socket 1 has two circles of protrusions 101 with a thickness of 0.1mm for laser welding for interfering with the inner wall of the outer tube 16 to facilitate laser welding.
As shown in fig. 1 and 6, the outer tube 16 has two parts, a thick inner wall end and a thin inner wall end, wherein the thick inner wall end is located at the upper part and the thin inner wall end is located at the lower part in fig. 1 and 6. An inner step 161 is designed at the transition position of the inner wall of the thick end of the inner wall and the thin end of the inner wall, as shown in fig. 1, 2, 3 and 5, a bearing seat 6 is arranged in the outer tube 16, the shape of the bearing seat 6 is also provided with a step, the step of the bearing seat 6 is matched with the inner step 161 of the outer tube 16, so that the bearing seat 6 can be positioned and installed at the inner step 161 in the outer tube 16, and the electric stay bar can bear certain axial tension. The bearing seat 6 and the outer tube 16 are also connected through laser welding, the bearing seat 6 is made of plastic, the outer tube 16 is a light-transmitting part, the bearing seat 6 is a light-absorbing part, and as an embodiment, the bearing seat 6 is provided with a circle of protrusions 601 with the thickness of 0.1mm for laser welding, and the protrusions are used for interfering with the inner wall of the outer tube 16 to facilitate laser welding.
Through the structure, the outer pipe 16 is connected with the motor side ball seat 1 in front of the ball seat and the outer pipe 16 is connected with the bearing seat 6 in a laser welding mode, and the welding position is continuously sealed, so that the waterproof function is realized besides the capability of bearing certain tensile strength.
As shown in fig. 1, 2 and 3, a motor-side buffer sleeve 2, a motor reducer assembly 3, a reducer-side buffer sleeve 4, a snap spring 5, a seal ring 7, a stop ring 8, a bearing 9 and a shaft sleeve 10 are further arranged between the motor-side ball cup 1 and the bearing seat 6 in the outer tube 16. Wherein: the motor side buffer sleeve 2 and the reducer side buffer sleeve 4 are respectively positioned at two ends of the motor reducer assembly 3 and are matched with the inner wall of the outer pipe 16 to play a role in shock absorption. One end (upper end in fig. 1) of a screw rod 11 is matched with the inner hole spline of the motor reducer assembly 3 through a spline structure for example to transmit power. The outer ring of the bearing 9 is in interference fit with the inner hole of the bearing seat 6, and the inner ring of the bearing 9 is in interference fit with the screw rod 11 to play a role of supporting the screw rod 11. The inner hole of the shaft sleeve 10 is in interference fit with the screw rod 11, the outer diameter of the shaft sleeve 10 is interfered with the lip edge of the sealing ring 7, and the outer diameter of the sealing ring 7 is interfered with the inner hole of the bearing seat 6, so that the sealing and waterproof effects are achieved. The stop ring 8 is located between the motor reducer assembly 3 and the bearing 9 to limit axial movement of the bearing 9. The clamp spring 5 can be an E-shaped clamp spring which is positioned in a groove on the spline side of the screw rod 11 to limit the axial movement of the screw rod 11, so that the screw rod 11 can only do rotary movement.
The lead screw 11 is screwed with a lead screw nut 13, and the other end (lower end in fig. 1) of the lead screw 11 is connected (e.g., riveted) with a terminal retainer 15 for limiting the movement range of the lead screw nut 13.
One end (e.g., the upper end in fig. 1) of the lead screw guide tube 14 is connected to the lead screw nut 13 (e.g., by a screw thread), and the other end of the lead screw guide tube 14 is connected to the spring-side ball socket assembly 18 (e.g., by a screw thread). When the lead screw 11 rotates, the lead screw nut 13 can be driven to move up and down, and the lead screw guide tube 14 can be driven to move up and down.
The inner tube 17 is sleeved outside the thin end of the inner wall of the outer tube 16, and the lower end of the inner tube 17 is connected with the spring-side ball socket assembly 18 and can move up and down along with the spring-side ball socket assembly 18.
The large spring 12 is positioned in a cavity formed among the outer tube 16, the inner tube 17 and the screw rod guide tube 14, one end of the large spring 12 is supported on the bearing seat 6, the other end of the large spring 12 is supported on the spring seat ball seat assembly 18 (such as a flange surface of the spring seat ball seat assembly 18), meanwhile, the end surface of the inner tube 17 is clamped between the large spring 12 and the spring seat ball seat assembly 18 (such as a flange surface of the spring seat ball seat assembly 18) and moves with the large spring 12 in a stretching mode, and the large spring 12 moves with the screw rod guide tube 14 in a stretching mode.
When the electric support rod is used, motor power drives the screw rod 11 to rotate through the motor reducer assembly 3, the screw rod 11 rotates to drive the screw rod nut 13, the screw rod guide tube 14 and the spring side ball seat assembly 18 to axially move, and the extension and the contraction of the electric support rod are realized.
In the utility model, the outer tube 16 has a structure which is shrunk from one end to the other end, the thin end is positioned in the inner tube 17, the inner wall of the thin end of the outer tube 16 is used for supporting the outer diameter of the large spring 12, the screw rod guide tube 14 supports the inner diameter of the large spring 12, and compared with the traditional electric stay bar, an additional spring support tube is omitted.
Referring to fig. 3, the lower end of the motor reducer assembly 3 has a limiting groove 301, and the upper end of the bearing seat 6 has a limiting boss 602, so that the limiting groove 301 and the limiting boss 602 are engaged to limit the rotation of the motor reducer assembly 3 when in use.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the content of the claims of the present invention should be within the technical scope of the present invention.
Claims (10)
1. A low-cost light-weight electric stay bar structure comprises a motor side ball socket, a motor reducer assembly, a bearing seat, a bearing, a screw rod, a large spring, a screw rod nut, a screw rod guide pipe, a terminal retainer ring, an outer pipe, an inner pipe and a spring side ball socket assembly; the method is characterized in that: the motor side ball head seat is connected with one end of the outer pipe; the outer pipe is provided with an inner wall thick end and an inner wall thin end, an inner step is designed at the transition position of the inner walls of the inner wall thick end and the inner wall thin end, a bearing seat is arranged in the outer pipe, a step is also arranged outside the bearing seat, and the step of the bearing seat is matched with the inner step of the outer pipe; a motor reducer assembly and a bearing are also arranged between the motor side ball head seat and the bearing seat in the outer pipe, the outer ring of the bearing is in interference fit with the inner hole of the bearing seat, and the inner ring of the bearing is in interference fit with the screw rod; one end of the screw rod is matched and connected with the motor reducer assembly and transmits power; a screw nut is screwed on the screw rod, and the other end of the screw rod is connected with a terminal check ring; one end of the screw rod guide pipe is connected with the screw rod nut, and the other end of the screw rod guide pipe is connected with the spring side ball head seat assembly; the inner pipe is sleeved outside the thin end of the inner wall of the outer pipe, and the lower end of the inner pipe is connected with the spring side ball socket assembly and can move up and down along with the spring side ball socket assembly; the large spring is positioned in a cavity formed among the outer pipe, the inner pipe and the screw rod guide pipe, one end of the large spring is supported on the bearing seat, and one end of the large spring is supported on the spring seat ball seat assembly.
2. The low-cost lightweight electric stay structure according to claim 1, characterized in that: the motor side ball cup seat is connected with one end of the outer pipe through laser welding, the motor side ball cup seat and the outer pipe are made of plastic materials, the outer pipe is a light-transmitting piece, and the motor side ball cup seat is a light-absorbing piece.
3. The low-cost lightweight electric stay structure according to claim 2, characterized in that: the motor side ball seat is provided with a bulge for laser welding, and the motor side ball seat is in laser welding with the inner wall of the outer pipe through the bulge for laser welding.
4. A low-cost and lightweight electric stay structure according to claim 1, 2 or 3, characterized in that: the bearing seat is connected with the outer pipe through laser welding, the bearing seat is made of plastic materials, the outer pipe is a light-transmitting part, and the bearing seat is a light-absorbing part.
5. The low-cost lightweight electric stay structure according to claim 4, characterized in that: the bearing seat is provided with a bulge for laser welding, and the bearing seat is in laser welding with the inner wall of the outer tube through the bulge for laser welding.
6. A low-cost and lightweight electric stay structure according to claim 1, 2 or 3, characterized in that: a motor side buffer sleeve and a speed reducer side buffer sleeve are further arranged between the motor side ball head seat and the bearing seat in the outer pipe, and the motor side buffer sleeve and the speed reducer side buffer sleeve are respectively arranged at two ends of the motor speed reducer assembly and are matched with the inner wall of the outer pipe to play a role in shock absorption.
7. A low-cost and lightweight electric stay structure according to claim 1, 2 or 3, characterized in that: a snap spring, a sealing ring, a stop ring and a shaft sleeve are also arranged between the motor side ball head seat and the bearing seat in the outer pipe; the inner hole of the shaft sleeve is in interference fit with the screw rod, the outer diameter of the shaft sleeve is interfered with the lip edge of the sealing ring, and the outer diameter of the sealing ring is interfered with the inner hole of the bearing seat, so that the sealing and waterproof effects are achieved; the stop ring is positioned between the motor reducer assembly and the bearing and used for limiting the axial movement of the bearing; the clamp spring is positioned in a groove on the spline side of the screw rod, so that the axial movement of the screw rod is limited, and the screw rod can only do rotary movement.
8. The low-cost lightweight electrically powered brace bar structure of claim 7, wherein: the clamp spring is an E-shaped clamp spring.
9. A low-cost and lightweight electric stay structure according to claim 1, 2 or 3, characterized in that: the end face of the inner pipe is clamped between the large spring and the spring seat ball seat assembly and moves along with the large spring in a telescopic mode, and the large spring moves along with the screw rod guide pipe in a telescopic mode.
10. A low-cost and lightweight electric stay structure according to claim 1, 2 or 3, characterized in that: one end of the screw rod is matched with an inner hole spline of the motor reducer assembly through a spline structure to transmit power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122799076.3U CN216553508U (en) | 2021-11-16 | 2021-11-16 | Low-cost lightweight electric stay bar structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122799076.3U CN216553508U (en) | 2021-11-16 | 2021-11-16 | Low-cost lightweight electric stay bar structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216553508U true CN216553508U (en) | 2022-05-17 |
Family
ID=81574045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122799076.3U Active CN216553508U (en) | 2021-11-16 | 2021-11-16 | Low-cost lightweight electric stay bar structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216553508U (en) |
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2021
- 2021-11-16 CN CN202122799076.3U patent/CN216553508U/en active Active
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