Driving mechanism of motorcycle windshield lifting device

Abstract

The utility model discloses a driving mechanism of a motorcycle windshield lifting device, and belongs to the field of motorcycle accessories. The device comprises a mounting bracket, a glass bracket and a driving mechanism, the driving mechanism comprises a motor, a screw rod, a screw block, a driving crank arm and a driving shaft, the key point is that a guide bracket and a connecting component which are fixed with the motor are added, the guide bracket is provided with a guide structure, and the connecting component is connected with the screw block and the driving crank arm and slides along the guide structure, so that the screw block is guided and supported. Stress of the screw rod and the screw block can be dispersed, and abrasion and bending are avoided; the moving track is restrained, the screw rod is prevented from shaking, and the windshield stably ascends and descends; service life of parts is prolonged and maintenance cost is reduced; and the structure is simple, easy to machine, suitable for different vehicle types and high in practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to motorcycle accessory technology field, concretely relates to a driving mechanism of motorcycle windshield lifting device. BACKGROUND

[0002] In the process of motorcycle driving, the windshield as an important protective component can effectively block the interference of air flow, dust, rainwater and the like to the rider, and improve the comfort and safety of riding. With the continuous improvement of user requirements for motorcycle use experience, the windshield structure with adjustable lifting gradually becomes the mainstream configuration. It drives the glass support to lift through a driving mechanism to realize flexible adjustment of the height of the windshield to adapt to different riding scenes (such as high-speed cruising, low-speed commuting) and the needs of riders of different heights.

[0003] At present, the common motorcycle windshield lifting device driving mechanism on the market is usually composed of core components such as a motor, a lead screw (screw rod), a screw block, a driving crank arm and a driving shaft, such as the previous product of the applicant, a kind of motorcycle windshield lifting device disclosed in application number CN2025209492081. Its working principle is: the motor outputs power to drive the lead screw to rotate, and the screw block screwed with the lead screw moves axially under the rotating action of the lead screw, and then drives the driving crank arm rotatingly matched therewith to swing, and the driving crank arm further transmits power to the glass support through the driving shaft, and finally realizes the lifting action of the windshield.

[0004] However, the above-mentioned existing driving mechanism has obvious structural defects and hidden dangers in the long-term use process, mainly in the following aspects:

[0005] 1. Concentrated stress leads to damage of core components: In the process of lifting the windshield, the weight of the glass support and the windshield itself, the air resistance during lifting and other load forces are almost all applied to the matching structure of the lead screw and the screw block. Since the matching of the lead screw and the screw block mainly relies on threaded transmission, its carrying capacity is limited, and it is in a state of concentrated stress for a long time, which is prone to problems such as thread wear, thread slipping and even lead screw bending deformation, directly leading to failure of the driving mechanism and affecting the normal lifting function of the windshield.

[0006] 2. Poor structural stability, prone to shaking: In the existing driving mechanism, the screw block is only matched with the lead screw through threads, and lacks additional guiding and supporting structures. In the process of driving the lead screw to rotate by the motor and moving the screw block axially along the lead screw, since there is a certain matching gap between the screw block and the lead screw, and no other structure constrains the moving track of the screw block, the screw block is prone to radial deviation, and then drives the lead screw to shake. This shaking not only causes the lifting process of the windshield to be unstable and produce abnormal noise, but also further aggravates the wear of the lead screw and the screw block, forming a vicious cycle.

[0007] 3. Short service life and high maintenance cost: Based on the above problems of stress concentration and poor stability, the core components (screw rod, screw block) of the existing driving mechanism wear out quickly and have a generally short service life. Users often need to frequently replace the screw rod, screw block and other components after a period of use, which not only increases the maintenance cost, but also affects the normal use experience of the motorcycle.

[0008] In summary, the driving mechanism of the existing motorcycle windshield lifting device has defects such as stress concentration, poor stability and short service life, and cannot meet the user's demand for the reliability and durability of the windshield lifting device. Therefore, an improved driving mechanism that can solve the above problems is urgently needed. Content of the utility model

[0009] In view of the deficiencies in the background art, the utility model provides a driving mechanism of a motorcycle windshield lifting device.

[0010] The technical scheme adopted by the utility model is: a driving mechanism of a motorcycle windshield lifting device, comprising a mounting bracket, a glass bracket and a driving mechanism for driving the glass bracket to lift, the driving mechanism comprising a motor, a screw rod driven to rotate by the motor, a screw block screwed with the screw rod, a driving crank arm in rotational cooperation with the screw block and a driving shaft connected with the driving crank arm, the driving mechanism further comprising a guide bracket fixedly connected with the motor and a connecting member, the guide bracket being provided with a guide structure, the connecting member being connected with the screw block and the driving crank arm at the same time, and the connecting member being slidably matched with the guide structure, so that the screw block is guided and supported by the connecting member through the guide structure.

[0011] The application further provides that: the guide structure comprises a sliding groove formed on the guide bracket, the connecting member is a screw rod penetrating the sliding groove, and the screw rod comprises a limiting screw head, a light rod segment in sliding cooperation with the sliding groove and an external thread segment for thread cooperation with a nut.

[0012] The application further provides that: the guide structure further comprises a long slot formed in the guide bracket, the screw rod extends into the long slot and is screwed with the screw block, the shape of the long slot is matched with one end of the driving crank arm and the screw block, and one end of the driving crank arm and the screw block can slide along the long slot, and the sliding groove is located on the two side walls of the long slot.

[0013] The application further provides that: the screw rod penetrates the sliding groove of the guide bracket, a first connecting hole on the driving crank arm and a second connecting hole on the screw block in sequence, so as to slidably connect the driving crank arm, the screw block and the guide bracket together.

[0014] The application further provides that: the extension direction of the guide bracket is parallel to the axial direction of the screw rod.

[0015] The application is further provided that one end of the driving crank arm is connected with the driving shaft, both ends of the driving shaft are respectively connected with driving swing arms, the driving swing arms are hinged with the glass support, and the polygonal through hole of the driving crank arm is screw-connected with a locking bolt on the side surface.

[0016] The application is further provided that the driving mechanism further comprises a driven shaft, the driven shaft is fixedly connected with the motor, both ends of the driven shaft are respectively connected with driven swing arms, and the driven swing arms are hinged with the glass support.

[0017] The application is further provided that the four corners of the glass support are provided with mounting portions for mounting the windshield.

[0018] The application has the following beneficial effects:

[0019] 1. Dispersing stress and reducing core loss: the connecting member transmits load to the guide support, shares the pressure of the lead screw and the screw block, avoids thread wear and lead screw bending, and reduces the risk of driving failure.

[0020] 2. Restraining action trajectory and improving lifting stability: the guide structure limits the movement path of the connecting member (and the screw block), cooperates with the fixed support of the guide support and the motor, avoids lead screw shaking during lifting, and realizes stable lifting of the windshield without abnormal sound.

[0021] 3. Extending service life and reducing maintenance cost: the dual effects of stress dispersion and stable guidance greatly improve the service life of the lead screw and the screw block, reduce the frequency and cost of users replacing parts, and improve product quality and customer reputation.

[0022] 4. Simple structure and strong adaptability: the new components are easy to process, do not need to modify existing core parts such as motors and lead screws, and are convenient for batch production; the size of the guide support and the interface of the connecting member can be adjusted according to the vehicle type, and the application range is wide.

[0023] In addition to the purposes, features and advantages described above, the application has other purposes, features and advantages.

[0024] The application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the application.

[0026] Figure 2 It is a structural schematic view of another view of the application.

[0027] Figure 3 It is a structural schematic view of the driving mechanism.

[0028] Figure 4An exploded view of a drive structure.

[0029] Figures 1-4 1, mounting bracket; 2, glass bracket; 3, motor; 4, screw rod; 5, screw block; 6, drive crank; 7, driving shaft; 8, guide bracket; 9, connecting member; 10, sliding groove; 11, limiting screw; 12, polished rod section; 13, nut; 14, external thread section; 15, long slot; 16, driving swing arm; 17, polygonal hole; 18, locking bolt; 19, driven shaft; 20, driven swing arm; 21, mounting portion; 22, first connecting hole; 23, second connecting hole. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0031] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0032] The present application provides a drive mechanism of a motorcycle windshield lifting device.

[0033] In the present embodiment, with reference to Figures 1-4 The drive mechanism of the motorcycle windshield lifting device comprises a mounting bracket 1, a glass bracket 2, and a drive mechanism for driving the glass bracket to lift, the drive mechanism comprises a motor 3, a screw rod 4 driven to rotate by the motor 3, a screw block 5 screwed with the screw rod 4, a drive crank 6 in rotational cooperation with the screw block 5, and a driving shaft 7 connected with the drive crank, the drive mechanism further comprises a guide bracket 8 fixedly connected with the motor and a connecting member 9, the guide bracket 8 is provided with a guide structure, the connecting member is connected with the screw block and the drive crank at the same time, and the connecting member is slidably matched with the guide structure, so that the screw block is guided and supported by the connecting member through the guide structure.

[0034] In the above technical solution, on the basis of the existing driving mechanism (motor, screw rod, screw block, driving crank arm, driving shaft), a guide support fixed with the motor shell and a connecting member connecting the screw block and the driving swing arm are added, and the connecting member and the guide support are in sliding fit. When the motor drives the screw rod to rotate, the screw block moves along the axial direction of the screw rod, the connecting member moves synchronously with the screw block, and the connecting member keeps a preset sliding track under the constraint of the guide structure. The connecting member not only transmits power to the driving swing arm to drive the glass support to rise and fall, but also provides additional support and guidance for the screw block and the connecting member through the guide support.

[0035] Thus, the problem of "stress concentration" of the existing mechanism is solved: the connecting member transmits part of the load to the guide support, shares the load pressure of the screw rod and the screw block, avoids thread wear and thread slipping, and improves the reliability of the driving mechanism.

[0036] The problem of "poor stability" is solved: the guide structure restricts the movement track of the connecting member and the screw block, prevents the screw block from moving radially, avoids the shaking of the screw rod, and ensures the stable lifting of the windshield.

[0037] The service life of the core components is prolonged: the wear of the screw rod and the screw block is reduced, frequent replacement is not needed, and the maintenance cost is reduced.

[0038] Specifically, the guide structure includes a sliding groove 10 formed on the guide support, the connecting member is a screw rod penetrating the sliding groove 10, and the screw rod includes a limiting screw head 11, a light rod section 12 in sliding fit with the sliding groove 10, and an external thread section 14 in threaded fit with a nut 13.

[0039] In this embodiment, the guide structure is a "sliding groove on the guide support", the connecting member is a "screw rod penetrating the sliding groove", and the screw rod includes a limiting screw head, a light rod section in sliding fit with the sliding groove, and an external thread section in fit with a nut. The principle is that the light rod section of the screw rod slides in the sliding groove along the groove direction, the limiting screw head and the nut are respectively limited from both sides of the guide support to prevent the screw rod from disengaging from the sliding groove; at the same time, the screw rod penetrates the screw block and the driving swing arm to realize the rigid connection and synchronous movement of the three, and the sliding groove provides accurate guidance for the overall movement through the sliding of the light rod section.

[0040] Specifically, the guide structure further includes a long groove 15 formed in the guide support, the screw rod penetrates the long groove 15 and is screwed with the screw block, the shape of the long groove is matched with one end of the driving crank arm and the screw block, and one end of the driving crank arm and the screw block can slide along the long groove, and the sliding groove is located on the two side walls of the long groove.

[0041] In the embodiment, a long slot is added in the guide bracket, the screw rod extends into the long slot and is screwed with the screw block, the shape of the long slot is adapted to the driving crank arm one end and the screw block, and the two can slide along the long slot, and the sliding slot is located on the side wall of the long slot. The principle is that the screw rod, the screw block and the driving crank arm one end are all accommodated in the long slot, the screw block and the end of the driving crank arm move together along the screw rod, the screw rod of the sliding slot on both sides further restricts the movement direction, forming a double-restriction structure of "long slot overall accommodation and both sides sliding slot accurate guidance". The long slot wraps the screw rod, the screw block and the driving crank arm one end, avoiding dust and impurities from entering the transmission structure, reducing component wear; at the same time, the radial displacement of the screw block and the driving crank arm is limited, preventing them from leaving the pre-set movement space, reducing the occupied space of the mechanism, and adapting to the limited installation environment of the motorcycle.

[0042] Specifically, the screw rod passes through the sliding slot of the guide bracket, the first connecting hole 22 on the driving crank arm and the second connecting hole 23 on the screw block in sequence, and the driving crank arm, the screw block and the guide bracket are slidably connected together.

[0043] In the embodiment, the screw rod connects the guide bracket, the driving crank arm and the screw block in series as a linkage whole through the through connection, when the screw block moves along the screw rod, the driving crank arm is driven to move synchronously by the screw rod, and the screw rod slides in the sliding slot. The screw rod plays the role of a connecting member and also plays the role of guiding cooperation with the sliding slot, the structure design is reasonable, the components are simplified, the assembly difficulty is reduced, and the cost is also reduced.

[0044] Specifically, the extension direction of the guide bracket is parallel to the axial direction of the screw rod.

[0045] In the embodiment, the transmission direction of the screw rod is the axial direction, and the guide bracket extends parallel to the screw rod, so that the sliding direction of the connecting member on the guide bracket is completely consistent with the moving direction of the screw block along the screw rod, the moving directions of the two are coordinated, there is no angle deviation, movement interference is avoided, and lifting precision and stability are improved.

[0046] Specifically, one end of the driving crank arm is connected with the driving shaft, both ends of the driving shaft are respectively connected with driving swing arms 16, the driving swing arms 16 are hinged with the glass bracket, and lock bolts 18 are screwed on the side surface of the polygonal through hole 17 of the driving crank arm.

[0047] In the embodiment, the polygonal through hole cooperates with the polygonal structure of the driving shaft, and the driving shaft is clamped by the lock bolts, so that the driving shaft and the driving crank arm are locked and connected, relative slipping between the two is prevented, and the connection stability is improved.

[0048] Specifically, the driving mechanism further comprises a driven shaft 19 fixedly connected with the motor, two ends of the driven shaft are respectively connected with driven swing arms 20, and the driven swing arms are hingedly connected with the glass support; four corners of the glass support are provided with mounting portions 21 for mounting the windshield glass.

[0049] In the embodiment, the double-axle support makes the load force be borne by the driving swing arm and the driven swing arm together, avoids deformation caused by excessive force on the driving shaft and the driving swing arm alone, and improves the stability of the support lifting. In addition, the stable structure of the support corners is used, mounting positions (such as screw holes, clamping grooves, etc.) are arranged at four corners, the windshield glass is fixed with the glass support through the mounting portions, the mounting structure of four-corner positioning is formed, and the stability of glass mounting is improved.

[0050] Skilled persons should know that although the utility model has been described according to the above specific embodiments, the utility model idea is not limited to the utility model, and any modification using the utility model idea will be included in the patent protection range.

Claims

1. A drive mechanism for a motorcycle windshield lifting device, comprising a mounting bracket, a glass bracket, and a drive mechanism for driving the glass bracket to lift and lower, the drive mechanism comprising a motor, a lead screw driven to rotate by the motor, a screw block screwed to the lead screw, a drive crank arm rotatably engaged with the screw block, and a drive shaft connected to the drive crank arm, characterized in that: The drive mechanism also includes a guide bracket and a connecting member fixedly connected to the motor. The guide bracket is provided with a guide structure. The connecting member is connected to both the screw block and the drive crank arm. The connecting member and the guide structure are slidably engaged, so that the screw block is guided and supported by the guide structure through the connecting member.

2. The drive mechanism of the motorcycle windshield lifting device according to claim 1, characterized in that: The guide structure includes a groove formed on the guide bracket, and the connecting member is a screw rod passing through the groove. The screw rod includes a limiting screw head, a smooth rod section that slides with the groove, and an external thread section for threaded engagement with a nut.

3. The drive mechanism of the motorcycle windshield lifting device according to claim 2, characterized in that: The guide structure also includes an elongated groove formed in the guide bracket. The lead screw extends into the elongated groove and is screwed into the screw block. The shape of the elongated groove is adapted to one end of the drive crank arm and the screw block, and one end of the drive crank arm and the screw block can slide along the elongated groove. The sliding groove is located on both side walls of the elongated groove.

4. The drive mechanism of the motorcycle windshield lifting device according to claim 3, characterized in that: The screw passes sequentially through the slide groove of the guide bracket, the first connecting hole on the drive crank arm, and the second connecting hole on the screw block, thereby slidably connecting the drive crank arm, the screw block, and the guide bracket together.

5. The drive mechanism of the motorcycle windshield lifting device according to claim 1, characterized in that: The extension direction of the guide bracket is parallel to the axial direction of the lead screw.

6. The drive mechanism of the motorcycle windshield lifting device according to claim 1, characterized in that: One end of the drive crank arm is connected to the drive shaft, and the two ends of the drive shaft are respectively connected to drive swing arms. The drive swing arms are hinged to the glass bracket, and locking bolts are screwed into the polygonal through hole side of the drive crank arm.

7. The drive mechanism of the motorcycle windshield lifting device according to claim 1, characterized in that: The drive mechanism also includes a driven shaft, which is fixedly connected to the motor. Both ends of the driven shaft are connected to driven swing arms, which are hinged to the glass bracket.

8. The drive mechanism of the motorcycle windshield lifting device according to claim 1, characterized in that: The glass bracket has mounting parts at its four corners for installing the windshield.

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