Electric tail hook

Abstract

The utility model provides an electric tail hook, relates to the technical field of automobile accessories, and solves the technical problem that in the prior art, a tail hook needs to be manually folded, and operation is complex. The device comprises a driving mechanism, a mounting seat, a transmission mechanism and a car coupler, the driving mechanism is arranged on the mounting seat, the transmission mechanism is arranged on the mounting seat, one end of the transmission mechanism is connected with the driving end of the driving mechanism, and the other end of the transmission mechanism is connected with the car coupler. The car coupler is rotatably arranged on the mounting seat and connected with the other end of the transmission mechanism, and the driving mechanism can drive the car coupler to rotate until the included angle between the axis direction of the driving mechanism and the axis direction of the car coupler is alpha. The driving mechanism drives the transmission mechanism to drive the car coupler to rotate, so that the car coupler extends out or retracts, and the complicated operation of manual folding is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an electric tail hook. Background Art

[0002] The tail hook is a common accessory for towing on the rear of some automobiles. At present, most of the existing towing hooks are fixedly arranged on the bumper, and the tail hook part faces backward and protrudes from the vehicle body. When the towing hook is not actually used, such a towing hook poses a great potential safety hazard to the following vehicle. Although some towing hooks can be folded to avoid protruding from the vehicle body, manual operation is required, making the operation complicated. Content of the Utility Model

[0003] The purpose of the utility model is to provide an electric tail hook, which solves the technical problem of complicated manual folding operation of the tail hook in the prior art. The preferred technical solutions provided by the utility model can produce many technical effects, which will be elaborated below.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] The electric tail hook provided by the utility model includes a driving mechanism, a mounting seat, a transmission mechanism and a hook. The driving mechanism is arranged on the mounting seat, the transmission mechanism is arranged on the mounting seat, one end of the transmission mechanism is connected to the driving end of the driving mechanism, the hook is rotatably arranged on the mounting seat and is connected to the other end of the transmission mechanism, and the driving mechanism can drive the hook to rotate until the included angle between the axis direction of the driving mechanism and the axis direction of the hook is α.

[0006] Preferably, the range of α is 60 degrees to 120 degrees.

[0007] Preferably, the transmission mechanism includes a first helical gear, a transmission connecting rod, a second helical gear, a flange, a transmission gear, an outer gear sleeve, a gear outer sleeve, a threaded outer steel sleeve, a ball and a base; the first helical gear is arranged on the output shaft of the driving mechanism;

[0008] The transmission connecting rod is rotatably arranged on the mounting seat, one end of the transmission connecting rod is connected to the second helical gear, and the other end of the transmission connecting rod is provided with the flange;

[0009] The second helical gear is in transmission connection with the first helical gear;

[0010] The transmission gear is rotatably arranged on the flange, the outer gear sleeve is rotatably arranged on the transmission connecting rod, and the transmission external teeth of the outer gear sleeve are meshed with the transmission gear. An external thread is arranged on the outer gear sleeve, an internal thread is arranged inside the external thread steel sleeve, and the external thread steel sleeve is in threaded connection with the outer gear sleeve;

[0011] The internal teeth of the gear outer sleeve are meshed with the transmission gear, and the gear outer sleeve is connected with the coupler;

[0012] An annular groove with a trapezoidal cross-sectional shape is arranged on the outer wall of the external thread steel sleeve. The width of the groove opening of the annular groove is greater than the width of the groove bottom of the annular groove, and the ball is arranged in the annular groove;

[0013] The base is sleeved outside the external thread steel sleeve, and the external thread steel sleeve and the base can slide relative to each other along the axis of the external thread steel sleeve;

[0014] The base has a perforation, and a part of the ball can pass through the perforation and extend into the limit groove on the inner barrel wall of the coupler.

[0015] Preferably, the inclination angles of the first helical gear and the second helical gear are both in the range of 15 degrees to 30 degrees.

[0016] Preferably, the number of the transmission gears is at least three and they are evenly arranged circumferentially along the axis of the transmission connecting rod.

[0017] Preferably, the number of the balls is at least two, and the numbers of the limit grooves and the perforations are the same as that of the balls.

[0018] Preferably, an outer cover is further included. The outer cover is covered on one side of the flange away from the transmission connecting rod. The outer cover is in limit connection with the gear outer sleeve, and the outer cover is connected with the coupler.

[0019] Preferably, a connecting frame is further included, and the mounting seat is arranged on the connecting frame.

[0020] Preferably, the driving mechanism is a motor.

[0021] The present application adopts the above technical solutions and at least has the following beneficial effects:

[0022] The electric tailhook includes a driving mechanism, a mounting seat, a transmission mechanism, and a coupler. The driving mechanism is disposed on the mounting seat, and the mounting seat is used to install the electric tailhook. The transmission mechanism is disposed on the mounting seat. One end of the transmission mechanism is connected to the driving end of the driving mechanism. The coupler is rotatably disposed on the mounting seat and is connected to the other end of the transmission mechanism. The driving mechanism can drive the coupler to rotate until the included angle between the axis direction of the driving mechanism and the axis direction of the coupler is α. By providing driving force through the driving mechanism, transmitting the force to the coupler through the transmission mechanism, driving the coupler to rotate, and making the included angle between the axis direction of the driving mechanism and the axis direction of the coupler be α, the coupler can be driven to extend out without manual folding operation.

[0023] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of the electric tailhook in the retracted state provided by the embodiment of the present invention;

[0026] Figure 2 It is a schematic structural diagram of the electric tailhook in the deployed state provided by the embodiment of the present invention;

[0027] Figure 3 It is a front view structural schematic diagram of the electric tailhook in the retracted state provided by the embodiment of the present invention;

[0028] Figure 4 It is a partial sectional structural schematic diagram of the electric tailhook provided by the embodiment of the present invention;

[0029] Figure 5 It is a schematic structural diagram of the tailhook provided by the embodiment of the present invention;

[0030] Figure 6 It is a partial central structural schematic diagram of the driving mechanism provided by the embodiment of the present invention;

[0031] Figure 7 It is a partial inner layer structural schematic diagram of the driving mechanism provided by the embodiment of the present invention;

[0032] Figure 8It is a schematic diagram of a partial structure in the middle layer of the driving mechanism provided by an embodiment of the present utility model;

[0033] Figure 9 It is a schematic diagram of the overall structure of the driving mechanism provided by an embodiment of the present utility model.

[0034] In the figure: 1, driving mechanism; 2, mounting seat; 3, transmission mechanism; 4, coupler; 5, first helical gear; 6, transmission connecting rod; 7, second helical gear; 8, flange; 9, transmission gear; 10, external gear sleeve; 11, gear outer sleeve; 12, threaded outer steel sleeve; 13, ball; 14, base; 15, annular groove; 16, perforation; 17, limiting groove; 18, outer cover; 19, connecting frame. Specific embodiments

[0035] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope protected by the present utility model.

[0036] A specific embodiment of the present utility model provides an electric tail hook. Combining with the attached Figure 1 -attached Figure 4 As shown, it mainly includes a driving mechanism 1, a mounting seat 2, a transmission mechanism 3 and a coupler 4;

[0037] Among them, the driving mechanism 1 is arranged on the mounting seat 2. The mounting seat 2 is used to set the whole electric tail hook on the connecting frame 19 to play a mounting role. The transmission mechanism 3 is arranged on the mounting seat 2;

[0038] One end of the transmission mechanism 3 is connected to the driving end of the driving mechanism 1. The coupler 4 is rotatably arranged on the mounting seat 2 and is connected to the other end of the transmission mechanism 3. The transmission mechanism 3 transmits the driving force of the driving mechanism 1 to the coupler 4, thereby driving the movement of the coupler 4;

[0039] The driving mechanism 1 can drive the coupler 4 to rotate until the included angle between the axis direction of the driving mechanism 1 and the axis direction of the coupler 4 is α; that is, through the driving mechanism 1 and the transmission mechanism 3, the coupler 4 is moved to a state where it forms a certain included angle α with the axis direction of the driving mechanism 1. At this time, it is in the extended state. As shown in the attached Figure 2 , in the present application, the driving method of the driving mechanism 1 is used to solve the problem that the current tail hook can only be unfolded and retracted by manual folding.

[0040] In a specific embodiment of the present application, the included angle α between the axis direction of the driving mechanism 1 and the axis direction of the coupler 4 ranges from 60 degrees to 120 degrees. It should be noted that the driving mechanism 1 in the present application can be a motor, and the axis direction of the driving mechanism is the axis direction of the motor output shaft, and the motor rotates for driving. The axis direction of the coupler 4 is the overall extension direction of the coupler 4. The coupler 4 in the present application, as shown in the attached Figure 5 is a cylindrical structure connected to the transmission mechanism 3 at one end and a hook body structure at the other end. The coupler 4 is an integral forged coupler, and the cylindrical structure and the hook body structure are connected by an extension handle. The overall extension direction of the extension handle is the axis direction of the coupler 4.

[0041] In some embodiments, referring to the attached Figure 4 , 6 -9, the transmission mechanism 3 includes a first bevel gear 5, a transmission connecting rod 6, a second bevel gear 7, a flange 8, a transmission gear 9, an outer gear sleeve 10, a gear outer casing 11, a threaded outer steel sleeve 12, a ball 13, and a base 14;

[0042] As shown in the attached Figure 4 , the first bevel gear 5 is arranged on the output shaft of the driving mechanism 1, and the driving mechanism 1 drives the first bevel gear 5 to rotate;

[0043] As shown in the attached Figure 4 and the attached Figure 6 , the transmission connecting rod 6 is rotatably arranged on the mounting seat 2. One end of the transmission connecting rod 6 is connected to the second bevel gear 7, and a flange 8 is arranged at the other end of the transmission connecting rod 6; the second bevel gear 7 is meshed with the first bevel gear 5 to achieve transmission connection. The transmission connecting rod 6 is inserted through the internal tooth hole of the second bevel gear 7, and external teeth are arranged on the outer wall of the transmission connecting rod 6. The external teeth are meshed with the internal tooth hole, and the transmission connecting rod 6 is non-rotatably connected to the flange 8, that is, the rotation of the transmission connecting rod 6 can drive the flange 8 to rotate.

[0044] The transmission gear 9 is rotatably arranged on the flange 8, and the transmission gear 9 is arranged close to the outer edge of the flange;

[0045] As shown in the attached Figure 7 , the outer gear sleeve 10 is rotatably arranged on the transmission connecting rod 6, and transmission external teeth are arranged at one end of the outer gear sleeve 10 where it is located. The transmission external teeth of the outer gear sleeve 10 are meshed with the transmission gear 9. In this way, when the transmission gear 9 is driven to rotate by the flange 8, it can drive the outer gear sleeve 10 to rotate. External threads are arranged on the outer gear sleeve 10, and the external threads are not shown in the attached Figure 7 and are located on the outer wall of the outer gear sleeve 10 indicated by the label;

[0046] Referring to the attached Figure 8, an internal thread is provided inside the external steel sleeve 12 with threads. The external steel sleeve 12 with threads is threadedly connected to the external gear sleeve 10. In this way, the rotation of the external gear sleeve 10 can drive the external steel sleeve 12 with threads to move along the axis direction of the external gear sleeve 10 through the thread;

[0047] An annular groove 15 with a trapezoidal cross-sectional shape is provided on the outer wall of the external steel sleeve 12 with threads. The width of the groove opening of the annular groove 15 is greater than the width of the groove bottom of the annular groove 15. The ball 13 is arranged in the annular groove 15. In this way, the movement of the external steel sleeve 12 with threads along the axis direction can be used to push the ball 13 to move away from the axis direction of the external steel sleeve 12 with threads, and the ball 13 can also move towards the axis direction of the external steel sleeve 12 with threads;

[0048] And as shown in the appendix Figure 9 In the present application, the base 14 is sleeved outside the external steel sleeve 12 with threads, and the external steel sleeve 12 with threads and the base 14 can slide relative to each other along the axis direction of the external steel sleeve 12 with threads. One end of the base 14 close to the first bevel gear 5 is connected to the mounting seat 2, and there is a through hole 16 on the base 14. A part of the ball 13 can pass through the through hole 16 and extend into the limiting groove 17 on the inner cylindrical wall of the coupler 4. When one end of the ball 13 contacts the groove bottom of the annular groove 15, the other end of the ball 13 is located in the through hole 16. In this way, the through hole 16 is used to limit the ball 13 to only move towards or away from the axis direction of the external steel sleeve 12 with threads. Therefore, the circular hole size on the side of the through hole 16 facing the external steel sleeve 12 with threads is larger than the circular hole size on the side away from the external steel sleeve 12 with threads, so as to play a limiting role on the ball 13.

[0049] The ball can be pushed by the external steel sleeve 12 with threads to move into the limiting groove 17 of the coupler 4, so as to realize the locking of the coupler.

[0050] And in the present application, the gear outer sleeve 11 is of a circular structure, and internal teeth are provided on its inner ring surface. The internal teeth of the gear outer sleeve 11 are engaged with the transmission gear 9, so that the transmission gear 9 can drive the gear outer sleeve 11 to rotate. The gear outer sleeve 11 is connected to the coupler 4. In this way, when the flange 8 rotates and drives the transmission gear 9 to act, the gear outer sleeve 11 and the coupler 4 can be driven to rotate;

[0051] In the specific embodiment of the present application, the inclination angles of the first bevel gear 5 and the second bevel gear 7 are both in the range of 15 degrees to 30 degrees. And as shown in the appendix Figure 2 As shown, there is an arc connection at the connection between the cylindrical structure part of the coupler 4 and the extension handle in the present application, so that there is a certain angle between the axis directions of the extension handle and the cylindrical structure. With such a setting, when the motor drives the coupler 4 to rotate, the coupler 4 can rotate to be close to perpendicular to the axis direction of the motor as shown in the appendix Figure 2 As shown, at this time, the function of the tail hook can be realized. It can also rotate to as shown in the appendixFigure 1 The state where the coupler 4 shown is approximately parallel to the axis direction of the motor, and this is the retracted state at this time.

[0052] In some embodiments, the number of transmission gears 9 is at least three and they are evenly arranged circumferentially along the axis of the transmission connecting rod 6. As shown in the appendix Figure 6 shown, the number of transmission gears 9 can be three and they are arranged in a triangular pattern. This way can make the structure relatively stable and the transmitted force more uniform.

[0053] In some embodiments, the number of balls 13 is at least two, and the number of the limiting grooves 17 and the through holes 16 is the same as that of the balls 13. The number of balls 13 in this application is three, and they are evenly arranged circumferentially along the threaded outer steel sleeve 12.

[0054] In some embodiments, it further includes an outer cover 18. The outer cover 18 is covered on the side of the flange 8 away from the transmission connecting rod 6. The outer cover 18 is connected with the gear outer sleeve 11 in a limiting manner, and the outer cover 18 is connected with the coupler 4. The transmission mechanism 3 is sealed through the outer cover 18.

[0055] A dust-proof rubber seal can also be provided at the position where the coupler 4 is in rotational contact with the mounting seat 2.

[0056] In some embodiments, it further includes a connecting frame 19. The mounting seat 2 is arranged on the connecting frame 19, and it can be arranged on the vehicle body through the connecting frame 19.

[0057] In the present utility model, terms such as "one embodiment", "some embodiments", "example", "specific example", "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0058] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claimed rights.

Claims

1. An electric tail hook, characterized in that: It includes a driving mechanism, a mounting seat, a transmission mechanism and a coupler, wherein the driving mechanism is arranged on the mounting seat, the transmission mechanism is arranged on the mounting seat, one end of the transmission mechanism is connected to the driving end of the driving mechanism, the coupler is rotatably arranged on the mounting seat and connected to the other end of the transmission mechanism, and the driving mechanism can drive the coupler to rotate until the angle between the axial direction of the driving mechanism and the axial direction of the coupler is α.

2. The electric tail hook according to claim 1, characterized in that: The range of α is 60 degrees to 120 degrees.

3. The electric tail hook according to claim 1, characterized in that: The transmission mechanism includes a first bevel gear, a transmission connecting rod, a second bevel gear, a flange, a transmission gear, an outer gear sleeve, a gear outer sleeve, a threaded outer steel sleeve, a ball and a base; The first bevel gear is arranged on the output shaft of the driving mechanism; The transmission connecting rod is rotatably arranged on the mounting seat, one end of the transmission connecting rod is connected to the second bevel gear, and the other end of the transmission connecting rod is provided with the flange; The second helical gear is transmission-connected to the first helical gear; The transmission gear is rotatably arranged on the flange, the external gear sleeve is rotatably arranged on the transmission connecting rod, and the transmission external teeth of the external gear sleeve are meshed with the transmission gear, the external gear sleeve is provided with an external thread, the threaded external steel sleeve is provided with an internal thread, and the threaded external steel sleeve is threadedly connected with the external gear sleeve; The inner teeth of the gear outer sleeve are meshed with the transmission gear, and the gear outer sleeve is connected to the coupler; An annular groove with a trapezoidal axial cross-section is arranged on the outer wall of the threaded outer steel sleeve, the width of the annular groove is greater than the width of the groove bottom of the annular groove, and the ball is arranged in the annular groove; The base is sleeved outside the threaded outer steel sleeve, and the threaded outer steel sleeve and the base can slide relatively along the axial direction of the threaded outer steel sleeve; The base is provided with a through hole, and a part of the ball can pass through the through hole and extend into the limiting groove on the inner cylinder wall of the hook.

4. The electric tail hook according to claim 3, characterized in that: The inclination angles of the first helical gear and the second helical gear are both in the range of 15 degrees to 30 degrees.

5. The electric tail hook according to claim 3, characterized in that: The number of the transmission gears is at least three and they are evenly arranged along the circumference of the axis of the transmission connecting rod.

6. The electric tail hook according to claim 3, characterized in that: The number of the balls is at least two, and the number of the limiting grooves and the through holes is the same as the number of the balls.

7. The electric tail hook according to claim 3, characterized in that: It also includes an outer cover, which is arranged on a side of the flange away from the transmission connecting rod, the outer cover is limitedly connected to the gear outer sleeve, and the outer cover is connected to the coupler.

8. The electric tail hook according to claim 1, characterized in that: It also includes a connecting frame, and the mounting seat is arranged on the connecting frame.

9. The electric tail hook according to claim 1, characterized in that: The driving mechanism is a motor.

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