Turnover transmission device

Abstract

The utility model relates to a turnover transmission device, which is characterized by comprising a shell, a motor, a transmission structure and a rotating shaft, the rotating shaft synchronously rotates with the motor through the transmission structure, the shell is provided with a first chamber and a second chamber, the motor is fixedly arranged in the first chamber, the rotating shaft is rotatably arranged in the second chamber, and the motor is fixedly arranged in the second chamber. The first cavity and the second cavity are arranged in parallel and share the same side wall, the rotating shaft is sleeved with a damping sleeve, a plurality of connecting pieces are arranged on the peripheral face of the damping sleeve in the circumferential direction of the damping sleeve, the connecting pieces are arranged at intervals, a plurality of connecting grooves are correspondingly formed in the second cavity, and the connecting pieces are clamped in the corresponding connecting grooves. By the adoption of the technical scheme, according to the turnover transmission device, the motor is installed on the metal shell, the motor is preheated, heat is transmitted to the damping sleeve, the damping sleeve is prevented from being stuck at the low temperature, the motor is prevented from being started after preheating, and the problem that the torque of the motor is too large is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile display screens, in particular to a flip transmission device. Background Art

[0002] With the development of new energy vehicles, in order to enhance the sense of technology of vehicles, some parts inside and outside the vehicle are designed to be movable and foldable. For example, some display screens can be flipped to a fixed position when not in use to reduce the space occupied in the vehicle by combining with the transmission mechanism. This is one form of ceiling screen. This type of system generally includes motor drive module, transmission mechanism module, controlled module and other parts, and the movement is mainly realized by the cooperation of motor drive module and transmission mechanism module.

[0003] When designing the transmission mechanism module, lubricating grease is generally used to reduce friction between gears, thereby reducing the motor output torque and reducing noise; a plastic damping sleeve is used to provide fixed resistance to reduce drastic changes in the motor output torque during movement.

[0004] However, in the above structure, the lubricating grease may solidify under low temperature conditions. At the same time, the resistance of the plastic damping sleeve increases due to thermal expansion and contraction, which makes it difficult to start the motor. The output torque of the motor increases sharply, and the damping force of the transmission mechanism is too large, making it impossible to flip. Summary of the invention

[0005] Purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides a flip transmission device, which solves the problem of excessive motor torque by installing a motor on a metal casing, preheating the motor, transferring heat to the damping sleeve to prevent the damping sleeve from getting stuck at low temperatures, and starting the motor after preheating.

[0006] The technical solution of the utility model is as follows: a flip transmission device comprises a shell, a motor, a transmission structure and a rotating shaft, wherein the rotating shaft rotates synchronously with the motor via the transmission structure, a first chamber and a second chamber are provided on the shell, the motor is fixedly arranged in the first chamber, and the rotating shaft is rotatably arranged in the second chamber, the first chamber and the second chamber are arranged in parallel, and the two chambers share the same side wall, a damping sleeve is sleeved on the rotating shaft, a plurality of connecting members are provided on the outer peripheral surface of the damping sleeve along its circumference, and the connecting members are arranged separately, a plurality of connecting grooves are correspondingly provided in the second chamber, and each connecting member is clamped in the corresponding connecting groove.

[0007] By adopting the above technical solution, the external temperature is sensed through software. When the temperature is low, the motor is preheated, and the heat generated by the coil is transferred to the damping sleeve through the outer shell and the transmission structure to prevent the damping sleeve from getting stuck at low temperatures. At the same time, the lubricating grease on the transmission structure melts and no longer solidifies. The two chambers share the same side wall, and the heat in the first chamber can be transferred to the second chamber more quickly. The cooperation between the connecting piece and the connecting groove can not only fix the damping sleeve, but also increase the contact surface between the damping sleeve and the outer shell, thereby accelerating heat transfer, so that the resistance of the damping sleeve will not increase, and the problem of excessive starting torque of the motor at low temperatures is solved.

[0008] The utility model is further configured as follows: a plurality of limit members are provided on the inner side wall of the second chamber along its axial direction, a connecting groove is provided between two adjacent limit members, each limit member is provided along the axial direction of the second chamber, and a front end portion of each limit member is provided with an extension sheet extending toward the middle of the second chamber, and the end portion of the damping sleeve abuts against each extension sheet.

[0009] By adopting the above further configuration, the contact surface between the damping sleeve and the housing is enlarged, and the heat is better transferred to the damping sleeve. At the same time, the damping sleeve is positioned to make its structure stable.

[0010] A further configuration of the utility model is that the shell is made of metal material.

[0011] By further configuring the above structure, the thermal conductivity is improved, and the heat generated by the motor coil can be better transferred to the damping sleeve and the transmission structure.

[0012] The utility model is further configured as follows: the rotating shaft includes a first shaft body and a second shaft body, the diameter of the first shaft body is larger than the diameter of the second shaft body to form a first shoulder step, the damping sleeve is sleeved on the second shaft body, and the rear end is configured to abut against the first shoulder step.

[0013] By adopting the above-mentioned further configuration, the damping sleeve structure is stabilized, the damping sleeve is positioned front and rear by the cooperation of the first shoulder step and the extension piece, the connecting piece and the connecting groove are cooperated for axial positioning, and a protective sleeve is provided on the first shaft body to reduce the wear between the rotating shaft and the outer shell.

[0014] The utility model is further configured as follows: a third chamber is further configured on the shell, the third chamber is configured at the front end of the first chamber and the second chamber, and shares the same side wall with the first chamber and the second chamber, the transmission structure is configured in the third chamber, the motor is fixed in the first chamber via a fixing member, and the output shaft and rotating shaft of the motor both extend into the third chamber.

[0015] By adopting the above-mentioned further arrangement, the structural layout is reasonable and the thermal conductivity is good, so that the heat is transferred to the transmission structure, so that the lubricating grease on the transmission structure melts and is no longer in a solidified state.

[0016] The utility model is further configured as follows: the transmission structure includes a first worm, a first worm wheel, a second worm, a second worm wheel, a first gear and a second gear, the first worm being arranged on the output shaft of the motor, the first worm wheel being arranged on the second worm and meshing with the first worm, the third chamber being provided with a connecting shaft arranged parallel to the first worm, the second worm wheel and the first gear being both arranged on the connecting shaft, the second worm wheel being meshing with the second worm, the second gear being arranged on the rotating shaft and meshing with the first gear, so that the motor can drive the rotating shaft to rotate.

[0017] By adopting the above further arrangement, the transmission structure is simple, and the worm gear has a self-locking function, so that the transmission shaft structure is stable.

[0018] The utility model is further configured as follows: the rotating shaft also includes a third shaft body, the diameter of the second shaft body is greater than the diameter of the third shaft body to form a second shoulder step, the third shaft body is configured in a polygonal shape, and the second gear sleeve is arranged on the third shaft body to drive the rotating shaft to rotate.

[0019] By adopting the above-mentioned further arrangement, it is convenient for the second gear to drive the rotating shaft to rotate, so that the rotating shaft structure is stable and the transmission is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the utility model;

[0021] Figure 2 A top view of a specific embodiment of the utility model;

[0022] Figure 3 for Figure 2 Sectional view in the AA direction;

[0023] Figure 4 for Figure 2 Cross-sectional view in the BB direction;

[0024] Figure 5 This is a schematic diagram of the installation of the damping sleeve and the second chamber in a specific embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of a housing of a specific embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the installation of the transmission structure of a specific embodiment of the utility model;

[0027] Figure 8It is a schematic diagram of the transmission structure of a specific embodiment of the utility model;

[0028] Fig. 9 It is a schematic diagram of a rotating shaft and a damping sleeve of a specific embodiment of the utility model;

[0029] Fig.10 It is a schematic diagram of a rotating shaft according to a specific embodiment of the utility model. DETAILED DESCRIPTION

[0030] The technical scheme in this embodiment will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that in the description of the present invention, all directional indications (such as up, down, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0033] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that technical personnel in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] like Figure 1-10As shown, a flip transmission device includes a housing 1, a motor 2, a transmission structure and a rotating shaft 4, wherein the rotating shaft 4 rotates synchronously with the motor 2 via the transmission structure, the housing 1 is provided with a first chamber 11 and a second chamber 12, the motor 2 is fixedly arranged in the first chamber 11, the rotating shaft 4 is rotatably arranged in the second chamber 12, the first chamber 11 and the second chamber 12 are arranged in parallel, and the two chambers share the same side wall 10, a damping sleeve 41 is sleeved on the rotating shaft 4, a plurality of connecting members 411 are arranged on the outer peripheral surface of the damping sleeve 41 along the circumference thereof, and the connecting members 411 are arranged separately, and a plurality of connecting grooves 121 are correspondingly arranged in the second chamber 12, and each connecting member 411 is clamped in The corresponding connecting groove 121 senses the external temperature through software. When the motor is preheated at low temperature, the heat generated by the motor coil is transferred to the damping sleeve 41 through the shell 1 and the transmission structure 3 to prevent the damping sleeve from getting stuck at low temperature. At the same time, the lubricating grease on the transmission structure melts and no longer solidifies. The two chambers share the same side wall, which can transfer the heat in the first chamber 11 to the second chamber 12 more quickly. The cooperation of the connecting piece 411 and the connecting groove 121 can not only fix the damping sleeve 41, but also increase the contact surface between the damping sleeve 41 and the shell 1, accelerate the heat transfer, so that the resistance of the damping sleeve 41 will not increase, and solve the problem of excessive starting torque of the motor at low temperature. The shell is made of metal material with good thermal conductivity, which can better transfer the heat generated by the motor coil to the damping sleeve and the transmission structure.

[0035] A plurality of limiting members 122 are provided on the inner side wall of the second chamber 12 along its axial direction, and the connecting groove 121 is provided between two adjacent limiting members 122. Each limiting member 122 is arranged along the axial direction of the second chamber 12, and the front end of each limiting member 122 is provided with an extension piece 1221 extending toward the middle of the second chamber 12. The end of the damping sleeve 41 abuts against each extension piece 1221, so that the contact surface between the damping sleeve 41 and the outer shell 1 is large, and the heat is better transferred to the damping sleeve. At the same time, the damping sleeve is positioned to make its structure stable.

[0036] The rotating shaft 4 includes a first shaft body 42 and a second shaft body 43. The diameter of the first shaft body 42 is larger than the diameter of the second shaft body 43 to form a first shoulder step 5. The damping sleeve 41 is sleeved on the second shaft body 43, and the rear end is set in abutment with the first shoulder step 5, so that the structure of the damping sleeve 4 is stable. The damping sleeve 41 is positioned front and rear through the cooperation of the first shoulder step 5 and the extension piece 1221, and the connecting piece 411 cooperates with the connecting groove 121 for axial positioning. A protective sleeve 421 is sleeved on the first shaft body 42 to reduce the wear between the rotating shaft 4 and the outer shell 1.

[0037] The housing 1 is also provided with a third chamber 13, which is arranged at the front end of the first chamber 11 and the second chamber 12, and shares the same side wall with the first chamber 11 and the second chamber 12. The transmission structure is arranged in the third chamber 13, and the motor 2 is fixed in the first chamber 11 via a fixing member. The output shaft and the rotating shaft 4 of the motor 2 both extend into the third chamber 13. The structural layout is reasonable and the thermal conductivity is good. The heat is transferred to the transmission structure, so that the lubricating grease on the transmission structure melts and is no longer in a solidified state.

[0038] Specifically, the transmission structure includes a first worm 31, a first worm wheel 32, a second worm 33, a second worm wheel 34, a first gear 35 and a second gear 36. The first worm 31 is arranged on the output shaft of the motor 4, the first worm wheel 32 is arranged on the second worm 33 and meshes with the first worm 31, and a connecting shaft 14 arranged parallel to the first worm 31 is provided in the third chamber 13. The second worm wheel 34 and the first gear 35 are both arranged on the connecting shaft 14, and the second worm wheel 34 meshes with the second worm 33. The second gear 36 is arranged on the rotating shaft 4 and meshes with the first gear 35, so that the motor 2 can drive the rotating shaft 4 to rotate. In order to make the rotating shaft 4 structure stable, a transmission shaft 44 can be connected to the rotating shaft 4, one end of the transmission shaft 44 is connected to the rotating shaft 4, and the other end extends to the inner wall of the third chamber 13. The transmission structure is simple, and the worm wheels have a self-locking function, so that the transmission shaft structure is stable.

[0039] The rotating shaft 4 also includes a third shaft body 45. The diameter of the second shaft body 43 is larger than the diameter of the third shaft body 45 to form a second shoulder step 6. The third shaft body 45 is arranged in a polygonal shape. The second gear 36 is sleeved on the third shaft body 45 to drive the rotating shaft 4 to rotate. It is convenient for the second gear 36 to drive the rotating shaft 4 to rotate, so that the rotating shaft 4 has a stable structure and convenient transmission.

Claims

1. A flip transmission device, characterized in that: The invention comprises a housing (1), a motor (2), a transmission structure and a rotating shaft (4), wherein the rotating shaft (4) rotates synchronously with the motor (2) via the transmission structure, the housing (1) is provided with a first chamber (11) and a second chamber (12), the motor (2) is fixedly arranged in the first chamber (11), the rotating shaft (4) is rotatably arranged in the second chamber (12), the first chamber (11) and the second chamber (12) are arranged in parallel, and the two chambers share the same side wall (10), a damping sleeve (41) is sleeved on the rotating shaft (4), a plurality of connecting members (411) are arranged on the outer peripheral surface of the damping sleeve (41) along the circumference thereof, and the connecting members are arranged separately, and a plurality of connecting grooves (121) are correspondingly arranged in the second chamber (12), and the connecting members are clamped in the corresponding connecting grooves.

2. The flip transmission device according to claim 1, characterized in that: A plurality of limiting members (122) are provided on the inner side wall of the second chamber (12) along its axial direction, and the connecting groove is provided between two adjacent limiting members. Each limiting member is provided along the axial direction of the second chamber (12), and an extension piece (1221) extending toward the middle of the second chamber (12) is provided at the front end of each limiting member, and the end of the damping sleeve (41) abuts against each extension piece.

3. The overturning transmission device according to claim 1 or 2, characterized in that: The housing (1) is made of metal material.

4. The overturning transmission device according to claim 3, characterized in that: The rotating shaft (4) comprises a first shaft body (42) and a second shaft body (43); the diameter of the first shaft body (42) is greater than the diameter of the second shaft body (43) so as to form a first shoulder step (5); the damping sleeve (41) is sleeved on the second shaft body (43) and the rear end is arranged to abut against the first shoulder step (5).

5. The overturning transmission device according to claim 4, characterized in that: The housing (1) is further provided with a third chamber (13), the third chamber (13) being arranged at the front ends of the first chamber (11) and the second chamber (12), and sharing the same side wall with the first chamber (11) and the second chamber (12), the transmission structure being arranged in the third chamber (13), the motor (2) being fixedly arranged in the first chamber (11) via a fixing member, and the output shaft and the rotating shaft (4) of the motor (2) both extending into the third chamber (13).

6. The overturning transmission device according to claim 5, characterized in that: The transmission structure comprises a first worm (31), a first worm wheel (32), a second worm (33), a second worm wheel (34), a first gear (35) and a second gear (36); the first worm (31) is arranged on the output shaft of the motor (2); the first worm wheel (32) is arranged on the second worm (33) and meshes with the first worm (31); a connecting shaft (14) arranged parallel to the first worm (31) is arranged in the third chamber (13); the second worm wheel (34) and the first gear (35) are both arranged on the connecting shaft (14); the second worm wheel (34) meshes with the second worm (33); the second gear (36) is arranged on the rotating shaft (4) and meshes with the first gear (35); thereby the motor (2) can drive the rotating shaft (4) to rotate.

7. The flip transmission device according to claim 6, characterized in that: The rotating shaft (4) further comprises a third shaft body (45); the diameter of the second shaft body (43) is greater than the diameter of the third shaft body (45) so as to form a second shoulder step (6); the third shaft body (45) is arranged in a polygonal shape; the second gear (36) is sleeved on the third shaft body (45) so as to drive the rotating shaft (4) to rotate.

Images