Transmission structure and vehicle

Abstract

The utility model discloses a transmission structure and a vehicle. The transmission structure comprises a base; the nut is meshed with the screw rod, the nut and the screw rod move relatively, a first connecting part is arranged on the nut, and the first connecting part is integrally formed on the nut; the bearing is arranged on the lead screw in a sleeving mode and comprises a first ring and a second ring, the first ring is connected with the base, the second ring is rotatably arranged on the first ring and provided with a second connecting part, the second connecting part is integrally formed on the second ring, and the second connecting part is connected with the first connecting part. According to the embodiment of the utility model, the first connecting part is connected with the second connecting part, so that the nut and the second ring are connected into a whole, the first connecting part is integrally formed on the nut, the second connecting part is integrally formed on the second ring, the number of parts is reduced, the structure is optimized, the structural size is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of passenger vehicles, and in particular to a transmission structure and a vehicle. Background Art

[0002] In the related art, the bearing on the screw nut is usually fixed to the nut by bolts, and the bolts occupy a certain space, which increases the cost. Utility Model Content

[0003] In view of this, the utility model aims to provide a transmission structure.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A transmission structure comprises: a base; a screw rod and a nut, wherein the nut meshes with the screw rod, the nut and the screw rod move relative to each other, the nut is provided with a first connecting portion, and the first connecting portion is integrally formed with the nut; a bearing, the bearing is sleeved on the screw rod, the bearing comprises a first circle and a second circle, the first circle is connected to the base, the second circle is rotatably provided on the first circle, the second circle is provided with a second connecting portion, the second connecting portion is integrally formed with the second circle, and the second connecting portion is connected to the first connecting portion.

[0006] According to the transmission structure of the embodiment of the utility model, the first connecting part is connected to the second connecting part by setting the first connecting part, so that the nut and the second circle are connected as a whole, and the first connecting part is integrally formed with the nut, and the second connecting part is integrally formed with the second circle, thereby reducing the number of parts, optimizing the structure, reducing the structural size, and reducing the cost.

[0007] In addition, the transmission structure of the vehicle according to the above embodiment of the utility model may also have the following additional technical features:

[0008] In some embodiments, the nut includes: a nut body; a mounting portion, wherein the mounting portion is disposed at one end of the nut body close to the bearing, the first ring is configured as an outer ring, the second ring is configured as an inner ring, the inner ring is disposed inside the outer ring, and the mounting portion is disposed between the inner ring and the screw rod; wherein the mounting portion is at least partially configured as the second connecting portion.

[0009] In some embodiments, a diameter of the nut body is greater than a diameter of the mounting portion, and a side surface of the nut body facing the inner ring is configured as an abutment surface, and the abutment surface is suitable for abutting the inner ring.

[0010] In some embodiments, the inner wall of the inner ring is provided with a first threaded portion, the first threaded portion is configured as the first connecting portion, the outer wall of the mounting portion is provided with a second threaded portion, the second threaded portion is configured as the second connecting portion, and the second threaded portion is threadedly connected to the first threaded portion.

[0011] In some embodiments, a rotation assisting portion is provided on the inner ring, and the rotation assisting portion is used to connect to an external force applying member to enable the inner ring to rotate.

[0012] In some embodiments, the rotation assisting portion is disposed on a side of the inner ring facing away from the nut body.

[0013] In some embodiments, the base is provided with an avoidance hole, the screw rod is passed through the avoidance hole, and a fastener is also provided on the base. The first circle has a first side and a second side opposite to each other, and the fastener is suitable for stopping the first side so that the second side stops the base.

[0014] In some embodiments, the first ring is configured as an outer ring, the second ring is configured as an inner ring, the inner ring is arranged inside the outer ring, the base is provided with a seating groove, and the outer ring is arranged in the seating groove; wherein the fastener includes a fastening connection portion and a stop portion, the fastening connection portion is threadedly connected to the base, the stop portion is arranged at the fastening connection portion, and the stop portion stops at a side of the first ring away from the seating groove.

[0015] In some embodiments, the screw indirectly engages the nut via a plurality of balls.

[0016] Another object of the present invention is to provide a vehicle.

[0017] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0018] A vehicle comprises the transmission structure described above. The advantages of the vehicle and the transmission structure compared with the prior art are the same, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0020] Figure 1 It is a cross-sectional view of the transmission structure in the embodiment of the utility model;

[0021] Figure 2 This is an appearance diagram of the transmission structure in the embodiment of the utility model;

[0022] Figure 3 It is an exploded view of the transmission structure in the embodiment of the utility model.

[0023] Reference numerals:

[0024] 100. Transmission structure;

[0025] 10. base; 11. avoidance hole; 12. fastener; 121. fastening connection part; 122. stop part; 13. placement groove;

[0026] 20. Screw rod; 21. Ball; 30. Nut; 31. First connecting portion; 32. Nut body; 321. Abutment surface; 33. Mounting portion; 34. Reverse member;

[0027] 40. Bearing; 41. First ring; 411. First side; 412. Second side; 42. Second ring; 421. Rotation auxiliary part; 422. Second connecting part; 43. First dust cover; 44. Retaining frame; 45. Second dust cover; 46. Rolling element. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Unless otherwise specified, the front-to-back direction in the present application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0032] The following will refer to Figure 1-Figure 3 The utility model is described in detail in conjunction with the embodiments.

[0033] Reference Figure 1 According to an embodiment of the utility model, the transmission structure 100 of the vehicle includes: a base 10, a screw rod 20, a nut 30 and a bearing 40.

[0034] The nut 30 engages with the screw rod 20, and the nut 30 and the screw rod 20 move relative to each other. The nut 30 is provided with a first connecting portion 31, and the first connecting portion 31 is integrally formed with the nut 30. The bearing 40 is sleeved on the screw rod 20, and the bearing 40 includes a first ring 41 and a second ring 42. The first ring 41 is connected to the base 10, and the second ring 42 is rotatably provided on the first ring 41. The second ring 42 is provided with a second connecting portion 422, and the second connecting portion 422 is integrally formed with the inner ring, and the second connecting portion 422 is connected to the first connecting portion 31.

[0035] The nut 30 is meshed with the screw rod 20, and the nut 30 and the screw rod 20 affect each other. For example, the drive nut 30 rotates to move the screw rod 20. Specifically, in the vehicle steering system, turning the steering wheel drives the nut 30 to rotate, and the screw rod 20 moves to adjust the posture of the vehicle wheel, thereby achieving steering.

[0036] The base 10 provides support, and the bearing 40 is installed between the nut 30 and the base 10 so that the nut 30 can rotate stably.

[0037] In the related art, the bearing on the screw nut is usually fixed to the nut by bolts, and the bolts occupy a certain space, which increases the cost.

[0038] In the embodiment of the utility model, a first connecting portion 31 is provided on the nut 30, and a second connecting portion 422 is provided on the second ring 42 of the bearing 40. The first connecting portion 31 is connected to the second connecting portion 422, so that the nut 30 and the second ring 42 are connected as a whole and are always relatively stationary.

[0039] The first connection portion 31 and the second connection portion 422 may be threadedly connected, interference-fitted connected, or snap-fitted connected, thereby connecting the nut 30 and the inner ring as one.

[0040] Among them, the first connecting part 31 is integrally formed with the nut 30, and the second connecting part 422 is integrally formed with the second ring 42. Compared with the solution using bolts in the related art, the solution of the embodiment of the utility model reduces the number of parts and optimizes the structure. There is no need to reserve installation positions for bolts on the nut 30 and the bearing 40, which reduces the structural size and reduces the cost.

[0041] Among them, the first circle 41 can be constructed as an outer circle, the second circle 42 can be constructed as an inner circle, the inner circle is installed in the outer circle, and the outer circle is fixed on the base 10; or, the first circle 41 can be constructed as an inner circle, the second circle 42 can be constructed as an outer circle, the inner circle is installed in the outer circle, and the inner circle is fixed on the base 10.

[0042] According to the transmission structure 100 of the embodiment of the utility model, the first connecting part 31 is provided to connect the second connecting part 422, so that the nut 30 and the second ring 42 are connected as a whole, and the first connecting part 31 is integrally formed on the nut 30, and the second connecting part 422 is integrally formed on the second ring 42, thereby reducing the number of parts, optimizing the structure, reducing the structural size, and reducing the cost.

[0043] Reference Figure 1 In some embodiments, the nut 30 includes: a nut body 32 and a mounting portion 33 .

[0044] The mounting portion 33 is arranged at one end of the nut body 32 close to the bearing 40, the first circle 41 is constructed as an outer circle, the second circle 42 is constructed as an inner circle, the inner circle is arranged inside the outer circle, and the mounting portion 33 is arranged between the inner circle and the screw rod 20; wherein, the mounting portion 33 is at least partially constructed as a second connecting portion 422.

[0045] The mounting portion 33 is located between the inner ring and the screw 20 , hiding the mounting portion 33 . Meanwhile, the mounting portion 33 is at least partially constructed as a second connecting portion 422 , and the portion where the nut 30 is connected to the inner ring is inside the inner ring, avoiding occupying space outside the bearing 40 .

[0046] In the above solution, by installing the mounting portion 33 between the inner ring and the screw rod 20, the connection portion between the nut 30 and the bearing 40 is placed inside the bearing 40, avoiding the connection portion from occupying the space outside the bearing 40, thereby saving space.

[0047] Specifically, the mounting portion 33 is installed as a whole in the inner ring, and part of the mounting portion 33 is constructed as the second connecting portion 422, which is connected to the inner ring; or, the mounting portion 33 is installed as a whole in the inner ring, and the mounting portion 33 is constructed as the second connecting portion 422, which is connected to the inner ring.

[0048] Reference Figure 1 In some embodiments, the diameter of the nut body 32 is greater than the diameter of the mounting portion 33 , and the side surface of the nut body 32 facing the inner ring is configured as an abutment surface 321 , and the abutment surface 321 is suitable for abutting the inner ring.

[0049] The diameter of the nut body 32 is greater than the diameter of the mounting portion 33 , and the connection position between the nut body 32 and the mounting portion 33 has a step-like structure, which abuts against the inner ring, and the surface of the step-like structure abutting against the inner ring is the abutting surface 321 .

[0050] In the above scheme, by setting an abutment surface 321 on the nut body 32 and using the abutment surface 321 to abut the inner ring, it can be understood that the second connecting portion 422 on the mounting portion 33 is connected to the inner ring, and the abutment surface 321 abuts the inner ring. The friction force between the abutment surface 321 and the inner ring makes the connection between the inner ring and the mounting portion 33 more stable.

[0051] Specifically, the abutting surface 321 is in surface-to-surface contact with the side surface of the inner ring, and there is a large friction force between the abutting surface 321 and the inner ring, thereby preventing the nut 30 from falling off.

[0052] In some embodiments, the mounting portion 33 is inserted into the inner ring, the mounting portion 33 is at least partially configured as a first interference fit portion, the inner ring portion is partially configured as a second interference fit portion, and the first interference fit portion is interference fit with the second interference fit portion.

[0053] Reference Figure 1 In some embodiments, the inner wall of the inner ring is provided with a first threaded portion, the first threaded portion is configured as a first connecting portion 31, the outer wall of the mounting portion 33 is provided with a second threaded portion, the second threaded portion is configured as a second connecting portion 422, and the second threaded portion is threadedly connected to the first threaded portion.

[0054] The second threaded portion is threadedly connected to the first threaded portion, and the mounting portion 33 is screwed into the inner ring.

[0055] In the above solution, by providing the first threaded portion and the second threaded portion for threaded connection, the connection method is simple, so that the mounting portion 33 is quickly connected to the inner ring, thereby improving assembly efficiency.

[0056] Reference Figure 2 In some embodiments, a rotation auxiliary portion 421 is provided on the inner ring, and the rotation auxiliary portion 421 is used to connect to an external force applying member to enable the inner ring to rotate.

[0057] The rotation auxiliary part 421 is arranged on the inner ring to help the operator rotate the inner ring. When the control nut 30 is screwed into the inner ring or the nut 30 is removed from the inner ring, the rotation auxiliary part 421 plays an auxiliary role.

[0058] In the above solution, by providing the rotation auxiliary portion 421 on the inner ring, it is convenient for the operator to operate the inner ring, thereby improving the convenience and the assembly efficiency.

[0059] Specifically, the rotation auxiliary portion 421 may be a hole structure, into which an operator may use a tool to insert, or a protrusion structure, into which an operator may use a tool to stop.

[0060] Reference Figure 2 In some embodiments, the rotation assisting portion 421 is disposed on the side of the inner ring facing away from the nut body 32 .

[0061] The inner ring is located at one side of the nut body 32 , one side surface of the inner ring faces the nut body 32 , and the other opposite side surface is provided with a rotation auxiliary portion 421 .

[0062] In the above solution, by arranging the rotation auxiliary part 421 on the side of the inner ring away from the nut body 32, the rotation auxiliary part 421 and the nut body 32 are located on different sides of the inner ring, which makes it easy for the operator to contact the rotation auxiliary part 421, thereby improving convenience.

[0063] Specifically, there are multiple rotation auxiliary parts 421, and the multiple rotation auxiliary parts 421 are arranged at intervals along the circumferential direction of the inner ring. The operator can contact the rotation auxiliary parts 421 from multiple angles, which provides convenience for the operator.

[0064] Reference Figure 1 In some embodiments, the base 10 is provided with an avoidance hole 11, the screw rod 20 is passed through the avoidance hole 11, and a fastener 12 is also provided on the base 10. The first circle 41 has a first side surface 411 and a second side surface 412 relative to each other. The fastener 12 is suitable for stopping the first side surface 411 so that the second side surface 412 stops the base 10.

[0065] The fastener 12 is installed on the base 10 , and the fastener 12 abuts against the first side surface 411 of the first circle 41 , so that the opposite second side surface 412 of the first circle 41 abuts against the base 10 , thereby fixing the first circle 41 on the base 10 .

[0066] In the above solution, the first circle 41 is fixed to the base 10 by providing the fastener 12, thereby improving the stability of the base 10 and facilitating the later disassembly of the first circle 41.

[0067] Reference Figure 1In some embodiments, the first circle 41 is configured as an outer circle, the second circle 42 is configured as an inner circle, the inner circle is arranged inside the outer circle, a seating groove 13 is provided on the base 10, and the outer circle is arranged in the seating groove 13; wherein, the fastener 12 includes a fastening connection portion 121 and a stop portion 122, the fastening connection portion 121 is threadedly connected to the base 10, the stop portion 122 is arranged on the fastening connection portion 121, and the stop portion 122 stops at the side of the first circle 41 away from the seating groove 13.

[0068] The placement groove 13 is used to place the outer ring, the fastening connection portion 121 is threadedly connected to the base 10 to fix the fastener 12 on the base 10, and the stop portion 122 of the fastener 12 stops at the outer ring to fix the outer ring.

[0069] In the above solution, the outer ring is more stable by providing the placement groove 13 to place the outer ring, and at the same time, the fastening connection part 121 is provided to threadably connect the base 10, thereby improving the convenience of assembly.

[0070] Reference Figure 1 , Figure 3 In some embodiments, the screw rod 20 indirectly engages the nut 30 via a plurality of balls 21 .

[0071] Among them, a plurality of balls 21 are arranged between the screw rod 20 and the nut 30. The balls 21 roll between the screw rod 20 and the nut 30. The balls 21 are used to improve the friction and enhance the transmission efficiency.

[0072] Specifically, a reversing piece 34 is further provided in the nut 30 , and the reversing piece 34 is used for the circulation and return of the ball 21 to ensure that the ball 21 can continuously roll between the nut 30 and the screw rod 20 .

[0073] Specifically, spiral grooves are provided on the screw rod 20 and the nut 30, and the grooves form a raceway for the ball 21. The ball 21 is arranged in the raceway. When the ball 21 rolls in the raceway to one end of the nut 30, it enters the entrance of the reversing piece 34, returns to the other end of the nut 30 through the reversing piece 34, and enters the raceway again to continue the transmission process.

[0074] Reference Figure 3 In some specific embodiments, the bearing 40 further includes: a first dust cover 43 , a retaining frame 44 , a second dust cover 45 and a rolling element 46 .

[0075] The first dust cover 43 is disposed between the inner ring and the outer ring, the retaining frame 44 is disposed between the inner ring and the outer ring, the rolling element 46 is mounted on the retaining frame 44, and the second dust cover 45 is disposed between the inner ring and the outer ring.

[0076] The vehicle according to the embodiment of the present utility model includes the transmission structure 100 mentioned above.

[0077] According to the vehicle of the embodiment of the utility model, the first connecting part 31 is provided to connect the second connecting part 422, so that the nut 30 and the second ring 42 are connected as a whole, and the first connecting part 31 is integrally formed with the nut 30, and the second connecting part 422 is integrally formed with the second ring 42, thereby reducing the number of parts, optimizing the structure, reducing the structural size, and reducing the cost.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0079] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A transmission structure of a vehicle, characterized in that: include: Base (10); A screw rod (20) and a nut (30), wherein the nut (30) meshes with the screw rod (20), the nut (30) and the screw rod (20) move relative to each other, and the nut (30) is provided with a first connecting portion (31), and the first connecting portion (31) is integrally formed with the nut (30); A bearing (40), wherein the bearing (40) is sleeved on the screw rod (20), and the bearing (40) comprises a first ring (41) and a second ring (42), wherein the first ring (41) is connected to the base (10), and the second ring (42) is rotatably arranged on the first ring (41), and the second ring (42) is provided with a second connecting portion (422), and the second connecting portion (422) is integrally formed on the second ring (42), and the second connecting portion (422) is connected to the first connecting portion (31).

2. The transmission structure of a vehicle according to claim 1, characterized in that: The nut (30) comprises: Nut body (32); The mounting portion (33) is arranged at one end of the nut body (32) close to the bearing (40), the first ring (41) is configured as an outer ring, the second ring (42) is configured as an inner ring, the inner ring is arranged inside the outer ring, and the mounting portion (33) is arranged between the inner ring and the screw rod (20); wherein, The mounting portion (33) is at least partially configured as the second connecting portion (422).

3. The transmission structure of a vehicle according to claim 2, characterized in that: The diameter of the nut body (32) is greater than the diameter of the mounting portion (33), and the side surface of the nut body (32) facing the inner ring is configured as an abutment surface (321), and the abutment surface (321) is suitable for abutting the inner ring.

4. The transmission structure of a vehicle according to claim 2, characterized in that: The inner wall of the inner ring is provided with a first threaded portion, the first threaded portion is configured as the first connecting portion (31), the outer wall of the mounting portion (33) is provided with a second threaded portion, the second threaded portion is configured as the second connecting portion (422), and the second threaded portion is threadedly connected to the first threaded portion.

5. The transmission structure of a vehicle according to claim 4, characterized in that: The inner ring is provided with a rotation auxiliary part (421), and the rotation auxiliary part (421) is used to connect to an external force applying member to enable the inner ring to rotate.

6. The transmission structure of a vehicle according to claim 5, characterized in that: The rotation auxiliary portion (421) is arranged on the side of the inner ring away from the nut body (32).

7. The transmission structure of a vehicle according to claim 1, characterized in that: The base (10) is provided with an avoidance hole (11), the screw rod (20) is inserted into the avoidance hole (11), the base (10) is further provided with a fastener (12), the first ring (41) has a first side surface (411) and a second side surface (412) opposite to each other, and the fastener (12) is suitable for abutting against the first side surface (411) so that the second side surface (412) abuts against the base (10).

8. The transmission structure of a vehicle according to claim 7, characterized in that: The first ring (41) is configured as an outer ring, the second ring (42) is configured as an inner ring, the inner ring is arranged inside the outer ring, the base (10) is provided with a placement groove (13), and the outer ring is arranged in the placement groove (13); wherein, The fastener (12) comprises a fastening connection portion (121) and a stop portion (122), wherein the fastening connection portion (121) is threadedly connected to the base (10), and the stop portion (122) is arranged on the fastening connection portion (121), and the stop portion (122) stops at a side of the first ring (41) away from the placement groove (13).

9. The transmission structure of a vehicle according to any one of claims 1 to 8, characterized in that: The screw rod (20) is indirectly engaged with the nut (30) via a plurality of balls (21).

10. A vehicle, characterized in that: A transmission structure for a vehicle comprising any one of claims 1 to 9.

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