Protective device and vehicle

Abstract

The application relates to a protection device and a car, the protection device comprising a sliding assembly and an intermediate connecting piece, the sliding assembly being used for slidingly connecting a car sliding door to a guide rail, the sliding assembly comprising a first pulley, a connecting seat, a ratchet wheel, a pawl and a fork, the first pulley being rotationally connected with the connecting seat and being rolling and position-limiting connected with the guide rail, the first pulley being coaxially and synchronously rotationally arranged with the ratchet wheel, one end of the pawl being rotationally connected with the connecting seat and being position-limiting connected with the fork, the pawl being used for locking the ratchet wheel; one end of the intermediate connecting piece being movably connected with the fork, the fork being used for rotating the intermediate connecting piece, the fork being used for limiting the rotating angle of the pawl, the other end of the intermediate connecting piece being used for connecting an oil filler cap. When the oil filler cap is opened, the intermediate connecting piece can be driven to rotate the fork, the fork is limited to rotate a certain angle when rotating, the pawl is abutted in the tooth gap of the ratchet wheel, the ratchet wheel and the first pulley are locked, and the sliding door is prevented from impacting the oil filler cap.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile accessories, in particular to a protection device and an automobile. BACKGROUND

[0002] The sliding doors on both sides of the automobile can slide forward and backward relative to the automobile body, which is convenient for passengers in the middle and rear rows to get off the vehicle. The fuel filler cap is usually arranged on the rear side of the sliding door, i.e. close to the tail of the automobile body. When the fuel filler cap is opened for refueling, if the sliding door on the same side as the fuel filler cap is opened by a passenger in the vehicle, the sliding door will collide with the fuel filler cap.

[0003] In order to avoid the collision between the sliding door and the fuel filler cap, a stopper is usually arranged on the guide rail of the sliding door. When the fuel filler cap is opened, the stopper is lifted to prevent the sliding door from sliding in the direction of the fuel filler cap in the guide rail. Alternatively, the sliding door lock is connected with the fuel filler cap. When the fuel filler cap is opened, the sliding door lock cannot be opened, thereby limiting the opening and sliding of the sliding door. However, both of the above-mentioned methods for limiting the sliding door still have defects. In the former method, when the sliding door has been opened and passed the stopper, the opening of the fuel filler cap will no longer limit the movement of the sliding door, and the problem of the sliding door sliding backward and colliding with the fuel filler cap will still occur. In the latter method, when the sliding door lock has been opened or the sliding door is slightly opened, the opening of the fuel filler cap will no longer limit the sliding door lock, and the sliding door will still be in the opened state and can slide in the guide rail, and the problem of the sliding door sliding backward and colliding with the fuel filler cap will still occur. SUMMARY

[0004] Therefore, it is necessary to provide a protection device to solve the problem that the sliding door will collide with the fuel filler cap when sliding during refueling.

[0005] A protection device, comprising:

[0006] A sliding assembly for slidingly connecting the sliding door of the automobile to the guide rail, the sliding assembly comprising a first pulley, a connecting seat, a ratchet wheel, a pawl and a yoke, the first pulley being rotationally connected with the connecting seat and being rollingly and limitingly connected with the guide rail, the first pulley being coaxially and synchronously rotationally arranged with the ratchet wheel, one end of the pawl being rotationally connected with the connecting seat and being limitingly connected with the yoke, the pawl being used for locking the ratchet wheel;

[0007] An intermediate connecting piece, one end of the intermediate connecting piece being movably connected with the yoke for rotating the yoke, the yoke being used for limiting the rotation angle of the pawl, the other end of the intermediate connecting piece being used for connecting the fuel filler cap.

[0008] In one of the embodiments, the connecting seat comprises a first connecting plate, a gear and a rack, the first pulley and the ratchet wheel are rotationally connected with the first connecting plate, the gear is rotationally connected with the first connecting plate through a transmission shaft, the gear is coaxially and synchronously arranged with the shift fork, the pawl is connected with the first connecting plate through a transmission shaft, the pawl is provided with a notch at the connection with the transmission shaft, the shift fork is located at the notch, the rack is movably arranged on the first connecting plate and connected with the gear, one side of the rack is connected with the intermediate connecting piece.

[0009] In one of the embodiments, the shift fork comprises two shift pieces arranged at an angle, the pawl is arranged between the included angle formed by the two shift pieces.

[0010] In one of the embodiments, the ratchet wheel is arranged between the first connecting plate and the first pulley, the gear is arranged on the side of the first connecting plate away from the ratchet wheel, the shift fork and the pawl are arranged on the side of the first connecting plate close to the ratchet wheel.

[0011] In one of the embodiments, the pawl comprises a bent portion, the bent portion is bent towards the back of the guide rail.

[0012] In one of the embodiments, the connecting seat further comprises a slot, the rack further comprises a body and a plug rod connected with each other, the plug rod is inserted into the slot and is in sliding connection with the slot.

[0013] In one of the embodiments, the connecting seat further comprises a second connecting plate and at least one second pulley, the second pulley is rotationally connected with the second connecting plate, the second pulley is rotationally connected with the connecting seat and is in rolling connection with the guide rail, the guide rail is vertically arranged outside the vehicle body, the first pulley is vertically arranged in the guide rail, the first pulley and the second pulley respectively contact the top and the bottom of the guide rail, the top of the guide rail is provided with a horizontal sliding groove, and at least one second pulley is horizontally arranged in the sliding groove.

[0014] In one of the embodiments, the intermediate connecting piece is a pull wire, the pull wire comprises a fixed end, an elastic spiral section, a moving end and a steel wire rope connected with each other, the steel wire rope is arranged through the fixed end, the elastic spiral section and the moving end, a first end of the steel wire rope is connected with the fixed end, a second end of the steel wire rope extends from the moving end and is connected with one side of the rack, the moving end is limitingly connected with the connecting seat, and the fixed end is used for being connected with the oil filler cap.

[0015] In one of the embodiments, the sliding assembly further comprises a rubber ring, the rubber ring is sleeved on the first pulley.

[0016] A vehicle comprising the protection device as described above, and:

[0017] A sliding door;

[0018] First and second sliding rails for respectively slidingly connecting the top and bottom of the sliding door;

[0019] A vehicle body panel, the first and second sliding rails and the guide rail are connected to the vehicle body panel, and the guide rail is arranged between the first and second sliding rails and connected to the protection device;

[0020] A filler cap, an inner side of the filler cap is provided with a clamping portion, and the clamping portion is connected to the intermediate connecting piece.

[0021] The protection device described above connects the sliding door of the vehicle to the guide rail through the sliding assembly. When the sliding door moves, the guide rail can guide the sliding door. The first pulley of the pulley assembly is rotatably connected to the connecting seat and can roll in the guide rail, so that the pulley assembly can slide in the guide rail. The first pulley is limitingly connected to the guide rail, so that the pulley assembly can be prevented from disengaging from the guide rail. When the filler cap is opened, in order to prevent the sliding door from sliding backward and colliding with the filler cap, the sliding assembly needs to be prevented from sliding backward on the guide rail, that is, the sliding assembly needs to be prevented from sliding toward the filler cap. Therefore, the sliding assembly needs to be able to stop on the guide rail or slide on the guide rail away from the filler cap, that is, slide forward. In order to achieve this purpose, the sliding assembly is provided with a fork, a ratchet and a pawl. When the pawl abuts the tooth gap of the ratchet, the rotation of the ratchet can be limited. The first pulley of the pulley assembly is coaxially and synchronously rotatably arranged with the ratchet, so that the first pulley and the ratchet can rotate in the same direction at the same time or stop rotating at the same time. One end of the pawl is rotatably connected to the connecting seat and limitingly connected to the fork, and the rotation angle of the pawl is limited by the fork, so that the pawl can be locked with the ratchet. One end of the intermediate connecting piece is movably connected to the fork for rotating the fork, and the other end of the intermediate connecting piece is connected to the filler cap. When the filler cap is closed, the pawl does not abut the tooth gap of the ratchet, and the ratchet can rotate freely and does not limit the rotation of the first pulley. With the forward and backward sliding of the sliding door, the ratchet can rotate forward or backward with the first pulley. When the filler cap is opened, the intermediate connecting piece can be pulled to rotate the fork, and the fork limits the rotation of the pawl by a certain angle when the fork rotates, so that the pawl abuts the tooth gap of the ratchet and locks the ratchet. When the ratchet is locked, the ratchet and the first pulley can stop rotating and can only rotate away from the filler cap, so that the sliding assembly stops on the guide rail or can only slide forward on the guide rail, thereby moving away from the filler cap and avoiding the collision between the sliding door and the filler cap.

[0022] The above automobile, when the fuel filler cap is closed, the sliding door can freely slide. When the fuel filler cap is opened, the sliding door can be stopped on the guide rail, or can only slide forward on the guide rail, thereby moving away from the fuel filler cap, avoiding the situation that the sliding door hits the fuel filler cap. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 An assembly diagram of the protective device and the vehicle body of an embodiment;

[0024] Figure 2 An exploded view of the protective device of an embodiment;

[0025] Figure 3 An assembly diagram of the first pulley, the second pulley and the guide rail of the protective device of an embodiment;

[0026] Figure 4 A sliding assembly diagram of the protective device of an embodiment from a first perspective;

[0027] Figure 5 A sliding assembly diagram of the protective device of an embodiment from a second perspective;

[0028] Figure 6 A connection diagram of the sliding assembly and the intermediate connecting piece of the protective device of an embodiment;

[0029] Figure 7 A partial structure diagram of the sliding assembly of the protective device of an embodiment;

[0030] Figure 8 A diagram of the ratchet of the protective device of an embodiment in an unlocked state;

[0031] Figure 9 A diagram of the ratchet of the protective device of an embodiment in a locked state;

[0032] Figure 10 An assembly diagram of the ratchet and the first pulley of the protective device of an embodiment;

[0033] Figure 11 A structure diagram of the pawl of the protective device of an embodiment;

[0034] Figure 12 A connection diagram of the gear and the shift fork of the protective device of an embodiment;

[0035] Figure 13 A connection diagram of the rack and the first connecting plate of the protective device of an embodiment;

[0036] Figure 14 A structure diagram of the rack of the protective device of an embodiment;

[0037] Figure 15 Figure 2 is a schematic view of a filler cap and an intermediate connecting piece of a protective device according to an embodiment;

[0038] Figure 16 Figure 3 is a schematic view of an intermediate connecting piece of a protective device according to an embodiment.

[0039] Brief Description of the Drawings:

[0040] 100, sliding assembly; 200, filler cap; 300, guide rail; 400, body panel; 500, intermediate connecting piece;

[0041] 110, first pulley; 111, first shaft body; 120, second pulley; 130, ratchet; 140, connecting seat; 141, first connecting plate; 142, second connecting plate; 143, insertion slot; 144, fixing plate; 145, elastic member; 150, gear; 151, transmission shaft; 160, shift fork; 170, pawl; 171, bent portion; 172, connecting portion; 180, rack; 181, insertion rod; 210, clamping portion; 510, fixed end; 520, moving end. DETAILED DESCRIPTION

[0042] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described and it is therefore contemplated that there are other embodiments of the present application that fall within the scope of the present application. It is therefore intended that the present application not be limited to the specific embodiments disclosed below, but will only be limited to the scope of the appended claims, and their equivalents.

[0043] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0044] In addition, the terms "first", "second", and the like, if any, are used herein for descriptive purposes only and should not be construed as indicating or implying relative importance or implicating the number of indicated technical features. Thus, a feature defined with "first" or "second" can include at least one of the features explicitly or implicitly. In the description of the present application, the term "plurality" means at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0045] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In the present application, unless otherwise explicitly specified and limited, if the first feature is described as "on" or "under" the second feature and the like, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or it can only mean that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or it can only mean that the first feature is lower than the second feature in horizontal height.

[0047] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.

[0048] Reference Figures 1 to 9The protective device provided by the embodiment of the application connects the automobile sliding door to the guide rail 300 through the sliding assembly 100, and the guide rail 300 can guide the sliding door when the sliding door moves. The first pulley 110 of the pulley assembly is rotationally connected to the connecting seat 140 and can roll in the guide rail 300, so that the pulley assembly can slide in the guide rail 300. The first pulley 110 is limitingly connected to the guide rail 300, so that the pulley assembly can be prevented from separating from the guide rail 300. In the embodiment, when the oil filler cap 200 is opened, in order to prevent the sliding door from sliding backward and colliding with the oil filler cap 200, the sliding assembly 100 needs to be prevented from sliding backward on the guide rail 300, that is, the sliding assembly 100 needs to be prevented from sliding toward the oil filler cap 200, so that the sliding assembly 100 can be at a standstill on the guide rail 300 or slide on the guide rail 300 away from the oil filler cap 200, that is, slide forward. In order to achieve the above purpose, the sliding assembly 100 is provided with the fork 160, the ratchet wheel 130 and the pawl 170. When the pawl 170 abuts in the tooth gap of the ratchet wheel 130, the rotation of the ratchet wheel 130 can be limited. The first pulley 110 of the pulley assembly is coaxially and synchronously rotationally arranged with the ratchet wheel 130, so that the first pulley 110 and the ratchet wheel 130 can rotate in the same direction at the same time or stop rotating at the same time. One end of the pawl 170 is rotationally connected to the connecting seat 140 and is limitingly connected to the fork 160. The rotation angle of the pawl 170 is limited by the fork 160, so that the pawl 170 can be locked with the ratchet wheel 130. One end of the intermediate connecting piece 500 is movably connected to the fork 160, and the other end of the intermediate connecting piece 500 is connected to the oil filler cap 200. When the oil filler cap 200 is closed, the pawl 170 does not abut in the tooth gap of the ratchet wheel 130, and the ratchet wheel 130 can rotate freely and does not limit the rotation of the first pulley 110. With the forward and backward sliding of the sliding door, the ratchet wheel 130 can rotate forward or backward with the first pulley 110. When the oil filler cap 200 is opened, the intermediate connecting piece 500 can be driven to rotate the fork 160, and the fork 160 rotates to limit the rotation of the pawl 170 by a certain angle, so that the pawl 170 abuts in the tooth gap of the ratchet wheel 130 and locks the ratchet wheel 130. After the ratchet wheel 130 is locked, the ratchet wheel 130 and the first pulley 110 can be at a standstill and no longer rotate toward the oil filler cap 200, or can only rotate away from the oil filler cap 200, so that the sliding assembly 100 is at a standstill on the guide rail 300 or can only slide forward on the guide rail 300 and away from the oil filler cap 200, thereby preventing the sliding door from colliding with the oil filler cap 200.

[0049] In order to limit the rotation of the pawl 170 by a certain angle, Figures 6 to 9As shown, in one embodiment, the connecting seat 140 comprises a first connecting plate 141, a gear 150 and a rack 180, the first pulley 110 and the ratchet wheel 130 are rotationally connected with the first connecting plate 141, the gear 150 is rotationally connected with the first connecting plate 141 through a transmission shaft 151, the gear 150 is coaxially and synchronously arranged with the shift fork 160, and rotation of the gear 150 can drive the shift fork 160 to rotate. The pawl 170 is connected with the first connecting plate 141 through the transmission shaft 151, and a notch is arranged at the connection position of the pawl 170 and the transmission shaft 151, the shift fork 160 is located in the notch, the transmission shaft 151 can transmit rotational motion to the shift fork 160 but not to the pawl 170, and the pawl 170 can be sleeved on the transmission shaft 151. The rack 180 is movably arranged on the first connecting plate 141 and connected with the gear 150, and one side of the rack 180 is connected with the intermediate connecting piece 500. When the oil filler cap 200 is opened, the intermediate connecting piece 500 drives the rack 180 to move, and the rack 180 drives the gear 150 to rotate. When the gear 150 drives the shift fork 160 to rotate through the transmission shaft 151, the shift fork 160 can contact the pawl 170 and drive the pawl 170 to rotate around the transmission shaft 151. The initial state of the pawl 170 is Figure 8 As shown, when the pawl 170 rotates counterclockwise as shown, it can move from Figure 8 to Figure 9 , so that the pawl 170 abuts against the tooth gap of the ratchet wheel 130, and the ratchet wheel 130 is locked. At this time, the ratchet wheel 130 and the first pulley 110 cannot rotate backward any more, but can rotate forward or stop. When rotating forward, the teeth of the ratchet wheel 130 can lift the pawl 170, and the pawl 170 is passively lifted and lowered. When the ratchet wheel 130 and the first pulley 110 rotate forward, the sliding door slides away from the oil filler cap 200.

[0050] It can be understood that in the state where the ratchet wheel 130 is locked, the sliding door cannot slide backward relative to the guide rail 300. At this time, if the sliding door is forced to move backward, the first pulley 110 cannot roll in the guide rail 300, and sliding friction will be generated between the two. Therefore, when the sliding door is forced to move, a significant resistance or difficulty can be felt, which plays a role in reminding the passenger or driver to check the state of the oil filler cap 200. After the oil filler cap 200 is closed, the sliding door is pushed, so that the situation that the sliding door is forced to impact the oil filler cap 200 is avoided.

[0051] To clearly show the limiting effect of the shift fork 160 on the pawl 170, a specific structure of the shift fork 160 is given below. As shown in Figure 8 , Figure 9 and Figure 12As shown in one embodiment, the shift fork 160 includes two shift pieces arranged at an angle, and the pawl 170 is arranged between the angle formed by the two shift pieces to limit the pawl 170. When the shift fork 160 rotates, it will push the pawl 170 to rotate in the same rotation direction.

[0052] In order to make the structure compact and improve the structural stability, Figure 7 、 Figure 8 and Figure 10 As shown, in one embodiment, the ratchet 130 is arranged between the first connecting plate 141 and the first pulley 110, the gear 150 is arranged on the side of the first connecting plate 141 away from the ratchet 130, and the fork 160 and the pawl 170 are arranged on the side of the first connecting plate 141 close to the ratchet 130, which can reduce the transmission distance from the gear 150 to the ratchet 130, make the structure compact, and improve stability.

[0053] In one embodiment, Figure 8 、 Figure 9 、 Figure 11 and Figure 12 As shown, the pawl 170 includes a bent portion 171 , which is bent toward the rear of the guide rail 300 . The bent portion 171 can abut against the tooth gap of the ratchet 130 , thereby locking the ratchet 130 .

[0054] Optionally, the pawl 170 further includes a connecting portion 172 , and the connecting portion 172 is sleeved on the transmission shaft 151 . No torque is transmitted between the connecting portion 172 and the transmission shaft 151 .

[0055] In one embodiment, Figure 13 、 Figure 14 and Figure 16 As shown, the connecting seat 140 also includes a slot 143, and the rack 180 also includes a body and an insertion rod 181 that are connected to each other. The insertion rod 181 is inserted into the slot 143 and is slidably connected to the slot 143. The intermediate connecting member 500 and the gear 150 are connected through the rack 180, and the moving motion of the intermediate connecting member 500 is converted into rotation and transmitted to the gear 150. The gear 150 drives the fork 160 to rotate, thereby realizing transmission control of the pawl 170.

[0056] In order to realize the limiting connection between the first pulley 110 and the guide rail 300 and prevent the pulley assembly from being separated from the guide rail 300, as shown in FIG. Figures 3 to 7As shown in the drawings, in one embodiment, the connecting seat 140 further comprises a second connecting plate 142 and at least one second pulley 120, the second pulley 120 is rotatably connected with the second connecting plate 142, the second pulley 120 is rotatably connected with the connecting seat 140 and rollingly connected with the guide rail 300, the guide rail 300 is vertically arranged outside the vehicle body, the first pulley 110 is vertically arranged in the guide rail 300, the first pulley 110 and the second pulley 120 respectively contact the top and bottom of the guide rail 300, the top of the guide rail 300 is provided with a horizontal sliding groove, and the second pulley 120 is horizontally arranged in the sliding groove. The second pulley 120 is supported by the second connecting plate 142 and horizontally arranged in the sliding groove, thereby limiting the second pulley 120 so that it can only slide in the front-rear direction of the sliding groove and cannot be separated from the guide rail, and further limiting the connecting seat 140 and the first pulley 110 in the guide rail 300.

[0057] In order to facilitate the sliding of the sliding door, the connecting seat 140 further comprises a fixed plate 144, a bent plate and an elastic member 145, the fixed plate 144 is connected with the elastic member 145, the fixed plate 144 is used for mounting the sliding door, the bent plate is connected with the elastic member 145 and connected with the first connecting plate 141 and the second connecting plate 142, the bent plate is bent towards the direction away from the guide rail 300, and the elastic member 145 can buffer the vibration caused by the sliding of the sliding door.

[0058] The intermediate connecting member 500 can adopt any structure as long as it can stretch and contract under the action of force. In one embodiment, as shown in the drawings, Figure 2 、 Figure 6 、 Figure 8 、 Figure 13 、 Figure 15 and Figure 16 The intermediate connecting member 500 is a pull wire, the pull wire comprises a fixed end 510, an elastic spiral section moving end 520 and a steel wire rope, the steel wire rope is arranged in the fixed end 510, the elastic spiral section and the moving end 520, the first end of the steel wire rope is connected with the fixed end 510, the second end of the steel wire rope extends from the moving end 520 and is connected with one side of the rack 180, the moving end 520 is limitingly connected with the connecting seat 140, and the fixed end 510 is used for connecting with the oil filler cap 200. When the oil filler cap 200 is opened, the first end of the steel wire rope on the side of the fixed end 510 is pulled, and the second end of the steel wire rope extending from the moving end 520 is moved and drives the rack 180 to move close to the moving end 520, so that the gear 150 rotates counterclockwise, as shown in the drawings. Figure 8As shown, the pawl 170 is finally driven to lock the ratchet 130. The steel wire is bendable, and the elastic spiral section is retractable. When the oil filler cap is closed, the elastic spiral section is retracted to avoid scratches on the body panel.

[0059] Further, the moving end 520 is arranged in the support, and the support is connected with the connecting seat.

[0060] Optionally, in other embodiments, the intermediate connecting member 500 is a four-bar linkage mechanism, and the four-bar linkage mechanism forms a parallelogram structure. Two opposite angles of the parallelogram structure are the fixed end 510 and the moving end 520, respectively. The fixed end 510 is connected with the oil filler cap 200, and the moving end 520 is connected with one side of the rack 180. When the oil filler cap 200 is opened, the fixed end 510 drives the parallelogram structure to be in tension, so that the moving end 520 moves and drives the rack 180 to move close to the fixed end 510, thereby driving the gear 150 to rotate counterclockwise. When the oil filler cap is closed, the fixed end 510 drives the parallelogram structure to be in compression, so that the moving end 520 moves and drives the rack 180 to move away from the fixed end 510.

[0061] Optionally, the intermediate connecting member 500 is a plurality of four-bar linkage mechanisms connected in series, and two ends of the plurality of four-bar linkage mechanisms are the fixed end 510 and the moving end 520, respectively.

[0062] Optionally, in one of the embodiments, the sliding assembly 100 further comprises a rubber ring, and the rubber ring is sleeved on the first pulley 110. The rubber ring can increase the wear resistance of the first pulley 110 when rolling in the guide rail 300, and can reduce the noise.

[0063] Optionally, the sliding assembly 100 further comprises a first shaft body 111, and the first pulley 110 and the ratchet 130 are rotationally connected with the first connecting plate 141 through the rotating shaft.

[0064] The protection device is characterized in that the sliding assembly 100 is used to slidably connect the sliding door of the vehicle to the guide rail 300, the guide rail 300 can guide the sliding door when the sliding door moves, the first pulley 110 of the pulley assembly is rotatably connected to the connecting seat 140 and can roll in the guide rail 300, so that the pulley assembly can slide in the guide rail 300. The first pulley 110 is limitingly connected to the guide rail 300, so that the pulley assembly can be prevented from being separated from the guide rail 300. When the oil filler cap 200 is opened for refueling, in order to prevent the sliding door from sliding backward and colliding with the oil filler cap 200, the sliding assembly 100 needs to be prevented from sliding backward on the guide rail 300, that is, the sliding assembly 100 needs to be prevented from sliding toward the oil filler cap 200, so that the sliding assembly 100 can be stalled on the guide rail 300 or slide away from the oil filler cap 200, that is, slide forward. In order to achieve this purpose, the sliding assembly 100 is provided with the fork 160, the ratchet wheel 130 and the pawl 170, when the pawl 170 abuts in the tooth gap of the ratchet wheel 130, the rotation of the ratchet wheel 130 can be limited. The first pulley 110 of the pulley assembly is coaxially and synchronously rotatably arranged with the ratchet wheel 130, so that the first pulley 110 and the ratchet wheel 130 can rotate in the same direction at the same time or stop rotating at the same time. One end of the pawl 170 is rotatably connected to the connecting seat 140 and limitingly connected to the fork 160, the rotation angle of the pawl 170 is limited by the fork 160, so that the fork 160 can lock the ratchet wheel 130. One end of the intermediate connecting piece 500 is movably connected to the fork 160, for rotating the fork 160, and the other end of the intermediate connecting piece 500 is connected to the oil filler cap 200. When the oil filler cap 200 is closed, the pawl 170 is not abutted in the tooth gap of the ratchet wheel 130, the ratchet wheel 130 can rotate freely and will not limit the rotation of the first pulley 110. With the sliding door sliding forward and backward, the ratchet wheel 130 can rotate forward or backward with the first pulley 110. When the oil filler cap 200 is opened, the intermediate connecting piece 500 can be pulled to rotate the fork 160, the fork 160 rotates to limit the rotation of the pawl 170 by a certain angle, so that the pawl 170 abuts in the tooth gap of the ratchet wheel 130, and the ratchet wheel 130 is locked. After the ratchet wheel 130 is locked, the ratchet wheel 130 and the first pulley 110 can be stalled and will not rotate toward the oil filler cap 200, or can only rotate away from the oil filler cap 200, so that the sliding assembly 100 is stalled on the guide rail 300 or can only slide forward on the guide rail 300, thereby moving away from the oil filler cap 200, to prevent the sliding door from colliding with the oil filler cap 200.

[0065] The application further provides an automobile, which comprises the protection device, the sliding door, the first sliding rail, the second sliding rail, a body sheet metal part 400 and a filler cap 200. The first sliding rail and the second sliding rail are used for slidingly connecting the top and the bottom of the sliding door respectively; the first sliding rail, the second sliding rail and the guide rail 300 are connected with the body sheet metal part 400, and the guide rail 300 is arranged between the first sliding rail and the second sliding rail and connected with the protection device; the filler cap 200 is internally provided with a clamping part 210, and the clamping part 210 is connected with the intermediate connecting piece 500. When the filler cap 200 is opened, the sliding door can be stalled on the guide rail 300 or can only slide forward on the guide rail 300, thereby moving away from the filler cap 200, so as to avoid the situation that the sliding door collides with the filler cap 200.

[0066] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0067] The above-mentioned embodiments only express several implementation manners of the present application, the description is more specific and detailed, however, it should not be understood as the limitation of the patent application scope. It should be pointed out that, for the ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A protective device, characterized in that The protection device comprises: a sliding assembly for slidingly connecting the automobile sliding door to a guide rail, the sliding assembly comprising a first pulley, a connecting seat, a ratchet, a pawl and a fork, the first pulley being rotationally connected to the connecting seat and being rollingly and limitingly connected to the guide rail, the first pulley being coaxially and synchronously arranged with the ratchet, one end of the pawl being rotationally connected to the connecting seat and being limitingly connected to the fork, the pawl being used for locking the ratchet; an intermediate connecting piece, one end of the intermediate connecting piece being movably connected to the fork for rotating the fork, the fork being used for limiting the rotating angle of the pawl, the other end of the intermediate connecting piece being used for connecting an oil filler cap; the connecting seat comprising a first connecting plate, a gear and a rack, the first pulley and the ratchet being rotationally connected to the first connecting plate, the gear being rotationally connected to the first connecting plate through a transmission shaft, the gear being coaxially and synchronously arranged with the fork; the pawl being connected to the first connecting plate through the transmission shaft, a notch being arranged at the connection between the pawl and the transmission shaft, the fork being located at the notch; the rack being movably arranged on the first connecting plate and being connected to the gear, one side of the rack being connected to the intermediate connecting piece; the intermediate connecting piece being a pull wire, the pull wire comprising a fixed end, an elastic spiral section, a moving end and a steel wire rope, the steel wire rope being arranged through the fixed end, the elastic spiral section and the moving end, a first end of the steel wire rope being connected to the fixed end, a second end of the steel wire rope extending out of the moving end and being connected to one side of the rack, the moving end being limitingly connected to the connecting seat, the fixed end being used for connecting the oil filler cap.

2. The guard of claim 1, wherein the fork comprising two prongs arranged at an angle, the pawl being arranged between the included angle formed by the two prongs.

3. The guard of claim 1, wherein, the ratchet being arranged between the first connecting plate and the first pulley, the gear being arranged on the side of the first connecting plate away from the ratchet, the fork and the pawl being arranged on the side of the first connecting plate close to the ratchet.

4. The guard of claim 1, wherein the pawl comprising a bent portion, the bent portion being bent towards the back of the guide rail.

5. The guard of claim 1, wherein the connecting seat further comprising a slot, the rack further comprising a body and a plug rod connected to each other, the plug rod being inserted into the slot and being slidingly connected to the slot.

6. The guard of claim 1, wherein the connecting seat further comprising a second connecting plate and at least one second pulley, the second pulley being rotationally connected to the second connecting plate, the second pulley being rotationally and rollingly connected to the connecting seat and to the guide rail, the guide rail being vertically arranged on the outside of the vehicle body, the first pulley being vertically arranged in the guide rail, the first pulley and the second pulley respectively contacting the top and the bottom of the guide rail, the top of the guide rail being provided with a horizontal sliding groove, at least one second pulley being horizontally arranged in the sliding groove.

7. The guard of any one of claims 1 to 6, wherein, the sliding assembly further comprising a rubber ring, the rubber ring being sleeved on the first pulley.

8. An automobile characterized by comprising: the automobile comprising the protection device according to any one of claims 1 to 7, and: a sliding door; first and second guide rails for respectively slidingly connecting the top and the bottom of the sliding door. The first slide rail, the second slide rail and the guide rail are connected with the body sheet metal part, and the guide rail is arranged between the first slide rail and the second slide rail and connected with the protection device. The inner side of the oil filler cap is provided with a clamping part, and the clamping part is connected with the intermediate connecting piece.

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