Hidden door handle for heavy-duty vehicle

Abstract

This invention relates to a concealed door handle for heavy-duty vehicles. The concealed door handle is embedded inside the sheet metal of the door and includes an outward-opening handle, a handle base, and a handle cover. One end of the handle base is connected to the outward-opening handle, and the other end of the handle base is connected to the handle cover. The outward-opening handle is equipped with a rack and pinion and is movably connected to the handle base via a main pin. Return torsion springs are sleeved at both ends of the main pin. The handle cover is engaged with the handle base and fixed with screws. The handle base is equipped with a driven gear, an outward-opening rocker arm, an electric push rod, and a lock cylinder. The handle cover is equipped with an outward-opening cable. The rack meshes with the driven gear, the driven gear is connected to the outward-opening rocker arm, and the outward-opening rocker arm is connected to the electric push rod and the lock cylinder respectively. The door handle adopts a downward-rotating opening method. The outward-opening handle and the handle base are connected via a main pin to form a double-hinge cantilever structure, which improves stability, reduces uncomfortable movements such as wrist and arm rotation, and improves user comfort.

Description

Technical Field

[0001] This invention relates to the field of vehicle parts technology, and in particular to a concealed door handle for heavy-duty vehicles. Background Technology

[0002] Currently, the concealed door handles commonly used in heavy-duty vehicles are mostly narrow and slender, with the rotating pin arranged vertically and employing a short single-hinge cantilever structure. After the door is unlocked, the user can press one end of the door handle or use a motor to automatically rotate it. The door handle will pop out to the appropriate position around a fixed pin, allowing the user's fingers to reach into the space. Then, the user can grasp the raised end of the door handle and continue to pull the handle to rotate it around the pin. The handle drives the outward-opening swing arm to rotate around the pin, which in turn drives the outward-opening cable to unlock the door, thus opening it.

[0003] However, the rotating pin is arranged vertically along the vehicle and uses a short single-hinge cantilever structure, resulting in poor handle stability and difficulty in ensuring clearance during rotation. Furthermore, due to its heavy weight and the high height of the car cab, users need to raise their arms and rotate their wrists and arms to rotate the handle to unlock the door and then pull the door to open it, which does not meet the user's comfortable usage posture. At the same time, the door handle has a large loss of opening force and is not smooth. Moreover, during the reset process, the door handle is only subject to the reset force of the torsion spring without damping for slowing down. The door handle has a large speed and acceleration, so the door handle collides rapidly with the base, generating vibration and noise. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a concealed door handle for heavy-duty vehicles. The outward-opening handle adopts a downward-rotating opening method, the main pin is arranged along the lateral side of the vehicle, and the outward-opening handle and handle base adopt a double-hinge cantilever structure, which improves the opening stability of the outward-opening handle, reduces shaking, and provides user comfort.

[0005] This invention is achieved using the following technical solution:

[0006] A heavy-duty vehicle concealed door handle, the concealed door handle being embedded inside the door sheet metal, includes an outward opening handle, a handle base, and a handle cover; one end of the handle base is connected to the outward opening handle, and the other end of the handle base is connected to the handle cover.

[0007] The outward-opening handle is equipped with a rack, and the outward-opening handle is movably connected to the handle base via a main pin. Return torsion springs are sleeved at both ends of the main pin. The handle cover plate is snapped into the handle base and fixed with screws.

[0008] The handle base is provided with a driven gear, an outward-opening rocker arm, an electric push rod, and a lock cylinder; the handle cover is provided with an outward-opening pull cable; the rack meshes with the driven gear, the driven gear is connected to the outward-opening rocker arm, and the outward-opening rocker arm is connected to the electric push rod and the lock cylinder respectively.

[0009] Preferably, a sealing strip is provided between the outward-opening handle and the handle base, and the sealing strip is provided with an upper shock-absorbing limit block and a lower shock-absorbing limit block.

[0010] Preferably, the handle base is further provided with a buffer damper and a positioning block. The buffer damper is positioned by the positioning block and the buffer damper is fixedly connected to the handle base by a positioning pin.

[0011] The driven gear and the outward-opening rocker arm are connected to the handle base via a secondary pin.

[0012] The driven gear is provided with a driven gear rack and a driven gear groove, and the driven gear rack meshes with the rack; the outward-opening rocker arm is provided with a cylindrical stop block, the cylindrical stop block is disposed in the driven gear groove, and the buffer damper meshes with the rack;

[0013] One end of the outward-opening rocker arm is connected to the electric push rod, and the other end of the outward-opening rocker arm is connected to the lock cylinder.

[0014] Preferably, the handle cover plate is provided with a mounting groove, the mounting groove is provided with the outward opening pull wire, the outward opening pull wire is provided with a cylindrical connecting sleeve, one end of the outward opening rocker arm is connected to the electric push rod and the outward opening pull wire through the cylindrical connecting sleeve, the other end of the outward opening rocker arm is provided with a mounting hole, and the lock cylinder is connected to the outward opening rocker arm through the mounting hole.

[0015] Preferably, the upper end of the electric push rod is provided with an ejector rod, the ejector rod is connected to the outward opening pull line, the cylindrical connecting sleeve is sleeved at the connection between the ejector rod and the outward opening pull line, and the outward opening rocker arm is connected to the ejector rod and the outward opening pull line through the cylindrical connecting sleeve.

[0016] Preferably, the lock cylinder passes through the handle cover plate and is disposed inside the handle base, and is fixed by a clamp; the lock cylinder is provided with a lock cylinder rocker arm, and the lock cylinder rocker arm is connected to the outward opening rocker arm through a lock cylinder pull rod;

[0017] The lock cylinder pull rod passes through the lock cylinder rocker arm and is located in the mounting hole provided in the outward-opening rocker arm. The lock cylinder pull rod and the lock cylinder rocker arm are fixed together by a snap fastener.

[0018] Preferably, the lower end of the electric push rod is provided with a connector, and the handle cover is also provided with a touch switch. The contact part of the touch switch abuts against the push rod, and the connecting part of the touch switch is connected to the connector.

[0019] Preferably, the outward-opening handle is further provided with a manual reset mechanism, which abuts against the reset torsion spring.

[0020] Preferably, the outward-opening handle is a one-piece injection-molded double-toothed rack structure.

[0021] Preferably, the rack includes a left rack and a right rack, the left rack meshes with the driven gear rack, and the buffer damper meshes with the left rack; both the left rack and the right rack are fitted with sealing rings.

[0022] Compared with the prior art, the present invention has the following beneficial technical effects:

[0023] The concealed door handles are embedded inside the door sheet metal, flush with the door without any protrusions. They can be electrically popped out, automatically reset and hidden, and unlocked in conjunction with the door lock, effectively reducing noise and resistance during vehicle operation, and improving the overall aesthetics and the vehicle's intelligence level.

[0024] The outward-opening handle adopts a one-piece injection-molded double toothed structure, which is sealed with the handle base by a sealing strip to prevent the retention of various dust and rainwater, ensuring that the inner area of ​​the door handle is clean and free of stains;

[0025] The outward-opening handle adopts a downward rotation opening method. The main pin is arranged along the lateral side of the vehicle. The outward-opening handle and the handle base are connected by the main pin to form a double-hinge cantilever structure, which improves the opening stability of the outward-opening handle, reduces shaking, and allows the outward-opening handle to meet the user's four-finger width operating space. In cases where the cab of a heavy-duty vehicle is high, the door can be opened by pulling it down, reducing the user's discomfort from rotating their wrist and arm, and improving user comfort.

[0026] A buffer damper is installed on the handle base. During the reset process of the outward-opening handle, the left rack of the outward-opening handle drives the driven gear and the buffer damper to rotate, thereby transmitting the resistance inside the buffer damper to the outward-opening handle, reducing the reset speed of the outward-opening handle under the reset spring force, and thus slowing down the collision between the outward-opening handle and the upper and lower shock-absorbing limit blocks, avoiding vibration and collision noise caused by the rapid reset of the outward-opening handle. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the exploded structure of the present invention;

[0028] Figure 2 This is a diagram illustrating the installation effect of the invention with the car door sheet metal.

[0029] Figure 3 This is a schematic diagram of the outward-opening handle in the open state of the present invention;

[0030] Figure 4 This is a front view schematic diagram of the outward-opening handle in the closed state in this invention;

[0031] Figure 5 This is a rear view schematic diagram of the outward-opening handle in the closed state in this invention;

[0032] Figure 6 This is a right view of the outward-opening handle in the closed state in this invention;

[0033] Figure 7 This is a left view of the outward-opening handle in the closed state according to the present invention;

[0034] Figure 8 This is a left cross-sectional view of the outward-opening handle in the closed state in this invention. Figure 1 ;

[0035] Figure 9 This is a left cross-sectional view of the outward-opening handle in the closed state in this invention. Figure 2 ;

[0036] Figure 10 This is a left cross-sectional view of the outward-opening handle in the closed state in this invention. Figure 3 ;

[0037] Figure 11 This is a schematic diagram showing the state of the outward-opening handle in the closed state and the state of the buffer damper in this invention;

[0038] Figure 12 This is a schematic diagram illustrating the open state of the outward-opening handle and the state of the buffer damper in this invention. Figure 1 ;

[0039] Figure 13 This is a schematic diagram illustrating the open state of the outward-opening handle and the state of the buffer damper in this invention. Figure 2 .

[0040] Figure Labels

[0041] 1. Outward-opening handle; 101. Rack; 1011. Left rack; 1012. Right rack; 102. Manual reset mechanism; 2. Sealing ring; 3. Sealing strip; 4. Upper shock-absorbing limit block; 5. Handle base; 501. Positioning block; 502. Positioning pin; 6. Lower shock-absorbing limit block; 7. Touch switch; 8. Main pin shaft; 9. Reset torsion spring; 10. Connector; 11. Electric push rod; 111. Push rod; 2. Handle cover plate; 121. Mounting groove; 13. Outward opening pull cable; 131. Cylindrical connecting sleeve; 14. Outward opening rocker arm; 141. Cylindrical stop block; 15. Buffer damper; 16. Secondary pin shaft; 17. Lock cylinder; 171. Clamp; 172. Lock cylinder rocker arm; 173. Buckle; 18. Driven gear; 181. Driven gear rack; 182. Driven gear groove; 19. Lock cylinder pull rod; 20. Door sheet metal. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0043] A heavy-duty vehicle concealed door handle is embedded inside the door sheet metal 20 and includes an outward opening handle 1, a handle base 5 and a handle cover 12; one end of the handle base 5 is connected to the outward opening handle 1 and the other end of the handle base 5 is connected to the handle cover 12.

[0044] The outward-opening handle 1 is equipped with a rack 101. The outward-opening handle 1 is movably connected to the handle base 5 via a main pin 8. Return torsion springs 9 are sleeved at both ends of the main pin 8. The handle cover 12 is snapped into the handle base 5 and fixed by screws.

[0045] The handle base 5 is provided with a driven gear 18, an outward-opening rocker arm 14, an electric push rod 11 and a lock cylinder 17, and the handle cover plate 12 is provided with an outward-opening pull cable 13; the rack 101 meshes with the driven gear 18, the driven gear 18 is connected to the outward-opening rocker arm 14, and the outward-opening rocker arm 14 is connected to the electric push rod 11 and the lock cylinder 17 respectively.

[0046] A sealing strip 3 is provided between the outward-opening handle 1 and the handle base 5. The sealing strip 3 is provided with an upper shock-absorbing limit block 4 and a lower shock-absorbing limit block 6.

[0047] The handle base 5 is also provided with a buffer damper 15 and a positioning block 501. The buffer damper 15 is positioned by the positioning block 501, and the buffer damper 15 is fixedly connected to the handle base 5 by the positioning pin 502.

[0048] Driven gear 18 and outward rocker arm 14 are connected to handle base 5 via auxiliary pin 16;

[0049] Driven gear 18 is provided with driven gear rack 181 and driven gear groove 182, driven gear rack 181 meshes with rack 101; outward rocker arm 14 is provided with cylindrical stop block 141, cylindrical stop block 141 is provided in driven gear groove 182, buffer damper 15 meshes with rack 101;

[0050] One end of the outward-opening rocker arm 14 is connected to the electric push rod 11, and the other end of the outward-opening rocker arm 14 is connected to the lock cylinder 17.

[0051] The handle cover plate 12 is provided with a mounting groove 121, and an outward opening pull wire 13 is provided in the mounting groove 121. The outward opening pull wire 13 is provided with a cylindrical connecting sleeve 131. One end of the outward opening rocker arm 14 is connected to the electric push rod 11 and the outward opening pull wire 13 through the cylindrical connecting sleeve 131. The other end of the outward opening rocker arm 14 is provided with a mounting hole. The lock cylinder 17 is connected to the outward opening rocker arm 14 through the mounting hole.

[0052] The upper end of the electric push rod 11 is provided with an ejector rod 111, which is connected to the outward opening pull line 13. The cylindrical connecting sleeve 131 is located at the connection between the ejector rod 111 and the outward opening pull line 13. The outward opening rocker arm 14 is connected to the ejector rod 111 and the outward opening pull line 13 through the cylindrical connecting sleeve 131.

[0053] The lock cylinder 17 passes through the handle cover plate 12 and is located inside the handle base 5, and is fixed by the clamp 171; the lock cylinder 17 is provided with a lock cylinder rocker arm 172, which is connected to the outward rocker arm 14 through the lock cylinder pull rod 19.

[0054] The lock cylinder lever 19 passes through the lock cylinder rocker arm 172 and is located in the mounting hole provided in the outward-opening rocker arm 14. The lock cylinder lever 19 and the lock cylinder rocker arm 172 are fixed by the buckle 173.

[0055] The lower end of the electric push rod 11 is provided with a connector 10, and the handle cover plate 12 is also provided with a touch switch 7. The contact part of the touch switch 7 abuts against the push rod 111, and the connecting part of the touch switch 7 is connected to the connector 10.

[0056] The outward-opening handle 1 is also equipped with a manual reset mechanism 102, which abuts against the reset torsion spring 9.

[0057] The outward-opening handle 1 is a one-piece injection-molded double-toothed rack structure.

[0058] The rack 101 includes a left rack 1011 and a right rack 1012. The left rack 1011 meshes with the driven gear rack 181, and the buffer damper 15 meshes with the left rack 1011. Both the left rack 1011 and the right rack 1012 are fitted with sealing rings 2.

[0059] When the door is closed, the outward opening handle 1 is flush with the door sheet metal 20 without any protrusion. It is pressed against the outward opening handle 1 by the sealing strip to achieve a seal between the outward opening handle 1 and the handle base 5, preventing rainwater, dust, and stains from entering the outer handle base 5 and the inner area of ​​the outward opening handle 1; and to achieve a seal between the outward opening handle 1 and the door sheet metal 20, preventing rainwater, dust, and stains from entering the interior of the door sheet metal 20.

[0060] When the car door needs to be opened, after the door is unlocked, the push rod 111 of the electric push rod 11 moves outward slowly, overcoming the spring force of the return torsion spring 9, causing the outward opening handle 1 to rotate around the main pin shaft 8. The rack 101 rotates around the main pin shaft 8 along with the outward opening handle 1, causing the left rack 1011 to mesh with the driven gear rack 181, thereby causing the driven gear 18 to rotate around the secondary pin shaft 16 fixed to the handle base 5 until the driven gear groove 182 contacts the cylindrical stop block 141 of the outward opening rocker arm 14. The outward opening handle 1 has been rotated outward at a certain angle. At this time, other fingers can be inserted into the handle to pull the inner contact surface of the outward opening handle 1. Alternatively, during the outward rotation of the outward opening handle 1, the opening of the outward opening handle 1 can meet the needs of the hand. When the required space is reached, insert the remaining fingers and continue to pull the outward opening handle 1 to open it outward, so that the outward opening handle 1 continues to rotate around the main pin shaft 8 until the driven gear groove 182 contacts the cylindrical stop block 141 of the outward opening rocker arm 14. The driven gear groove 182 pulls the cylindrical stop block 141, so that the outward opening rocker arm 14 rotates around the secondary pin shaft 16, thereby pulling the outward opening pull cable 13, which is engaged with the handle cover plate 12, through the cylindrical connecting sleeve 131, to unlock the car door. In special cases such as low battery or malfunction of the remote key, the manual reset mechanism 102 on the lower right side of the outward opening handle 1 can be pressed with the thumb to overcome the spring force of the reset torsion spring 9, so that the outward opening handle 1 rotates around the main pin shaft 8, and the above operation can be repeated.

[0061] After the car door is unlocked and opened, the outward opening handle 1 is released. The outward opening handle 1 is rotated around the main pin shaft 8 by the spring force of the return torsion spring 9, causing the left rack 1011 to rotate around the main pin shaft 8 along with the outward opening handle 1. The left rack 1011 on the outward opening handle 1 meshes with the driven gear rack 181, thereby driving the buffer damper 15 to rotate around the secondary pin shaft 16 fixed to the handle base 5 until the outward opening handle 1 is pressed against the sealing strip 3 and contacts the upper shock-absorbing limit block 4 and the lower shock-absorbing limit block 6, realizing the reset and sealing of the outward opening handle 1. The outward opening pull cable 13 pulls the outward opening rocker arm 14 back to the initial position.

Claims

1. A heavy-duty vehicle concealed door handle, characterized in that, The concealed door handle is embedded inside the door sheet metal (20) and includes an outward opening handle (1), a handle base (5) and a handle cover (12); one end of the handle base (5) is connected to the outward opening handle (1), and the other end of the handle base (5) is connected to the handle cover (12). The outward-opening handle (1) is provided with a rack (101). The outward-opening handle (1) is movably connected to the handle base (5) through a main pin (8). The two ends of the main pin (8) are fitted with reset torsion springs (9). The handle cover plate (12) is snapped into the handle base (5) and fixed by screws. The handle base (5) is provided with a driven gear (18), an outward-opening rocker arm (14), an electric push rod (11), and a lock cylinder (17). The handle cover (12) is provided with an outward-opening pull cable (13). The rack (101) meshes with the driven gear (18), the driven gear (18) is connected to the outward-opening rocker arm (14), and the outward-opening rocker arm (14) is connected to the electric push rod (11) and the lock cylinder (17) respectively.

2. The heavy-duty vehicle concealed door handle according to claim 1, characterized in that, A sealing strip (3) is provided between the outward-opening handle (1) and the handle base (5), and the sealing strip (3) is provided with an upper shock-absorbing limit block (4) and a lower shock-absorbing limit block (6).

3. The heavy-duty vehicle concealed door handle according to claim 2, characterized in that, The handle base (5) is also provided with a buffer damper (15) and a positioning block (501). The buffer damper (15) is positioned by the positioning block (501), and the buffer damper (15) is fixedly connected to the handle base (5) by a positioning pin (502). The driven gear (18) and the outward-opening rocker arm (14) are connected to the handle base (5) via the auxiliary pin (16); The driven gear (18) is provided with a driven gear rack (181) and a driven gear groove (182), and the driven gear rack (181) meshes with the rack (101); the outward-opening rocker arm (14) is provided with a cylindrical stop (141), the cylindrical stop (141) is provided in the driven gear groove (182), and the buffer damper (15) meshes with the rack (101); One end of the outward-opening rocker arm (14) is connected to the electric push rod (11), and the other end of the outward-opening rocker arm (14) is connected to the lock cylinder (17).

4. The heavy-duty vehicle concealed door handle according to claim 3, characterized in that, The handle cover (12) is provided with a mounting groove (121), and the mounting groove (121) is provided with the outward opening pull wire (13). The outward opening pull wire (13) is provided with a cylindrical connecting sleeve (131). One end of the outward opening rocker arm (14) is connected to the electric push rod (11) and the outward opening pull wire (13) through the cylindrical connecting sleeve (131). The other end of the outward opening rocker arm (14) is provided with a mounting hole. The lock cylinder (17) is connected to the outward opening rocker arm (14) through the mounting hole.

5. The heavy-duty vehicle concealed door handle according to claim 3, characterized in that, The electric push rod (11) has an ejector rod (111) at its upper end. The ejector rod (111) is connected to the outward-opening pull wire (13). The cylindrical connecting sleeve (131) is located at the connection between the ejector rod (111) and the outward-opening pull wire (13). The outward-opening rocker arm (14) is connected to the ejector rod (111) and the outward-opening pull wire (13) through the cylindrical connecting sleeve (131).

6. The heavy-duty vehicle concealed door handle according to claim 4, characterized in that, The lock cylinder (17) passes through the handle cover plate (12) and is located inside the handle base (5), and is fixed by a clamp (171); the lock cylinder (17) is provided with a lock cylinder rocker arm (172), and the lock cylinder rocker arm (172) is connected to the outward rocker arm (14) through a lock cylinder pull rod (19); The lock cylinder rod (19) passes through the lock cylinder rocker arm (172) and is located in the mounting hole provided in the outward-opening rocker arm (14). The lock cylinder rod (19) and the lock cylinder rocker arm (172) are fixed by a buckle (173).

7. The heavy-duty vehicle concealed door handle according to claim 5, characterized in that, The lower end of the electric push rod (11) is provided with a connector (10), and the handle cover plate (12) is also provided with a touch switch (7). The contact part of the touch switch (7) abuts against the push rod (111), and the connecting part of the touch switch (7) is connected to the connector (10).

8. The heavy-duty vehicle concealed door handle according to claim 1, characterized in that, The outward-opening handle (1) is also provided with a manual reset mechanism (102), which abuts against the reset torsion spring (9).

9. The heavy-duty vehicle concealed door handle according to claim 1, characterized in that, The outward-opening handle (1) is a one-piece injection-molded double-toothed structure.

10. The heavy-duty vehicle concealed door handle according to claim 3, characterized in that, The rack (101) includes a left rack (1011) and a right rack (1012). The left rack (1011) meshes with the driven gear rack (181), and the buffer damper (15) meshes with the left rack (1011). Both the left rack (1011) and the right rack (1012) are fitted with sealing rings (2).

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