A concealed door handle

Abstract

The application relates to the technical field of automobile door handles and discloses a hidden door handle, which comprises a mounting seat and a handle, the mounting seat is provided with a mounting groove, the handle can be retracted into the mounting groove so that the handle is in a retracted position, the handle can be extended from the mounting groove so that the handle is in an extended position, a connecting rod mechanism comprises a first connecting rod and a second connecting rod, the connecting rod mechanism can drive the handle to switch between the retracted position and the extended position, a driving mechanism comprises an actuator, a transmission rod and a driving support, the driving support can drive the first connecting rod and the second connecting rod to slide, one end of the transmission rod is hinged to the mounting seat, the other end is connected with the driving support, the actuator is arranged on the mounting seat, is connected with the middle part of the transmission rod and can drive the transmission rod to rotate. The hidden door handle has the advantages that the overall structure is compact, the space occupation is small, the stroke of the actuator can be enlarged, and the design freedom is high.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile door handles, and in particular to a hidden door handle. Background Art

[0002] Conventional car door handles protrude from the door, and are opened by pulling the handle manually. However, this detracts from the car's aesthetics, leading to the increasing adoption of concealed door handles in the industry. These handles are typically concealed within the door; to open the door, a motor first controls the handle to protrude, and then manually pull the handle to open it.

[0003] In existing concealed door handle structures, conventional motors cannot meet the travel requirements due to the limited installation space in the vehicle door. While a larger motor would still meet the travel requirements, the limited installation space in the door would easily cause interference between the motor and the vehicle glass. Furthermore, the overall structure of the door handle occupies a large installation space, resulting in a limited movement path for the handle and limited design freedom. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to propose a hidden door handle that can enlarge the motor stroke, occupies a small overall space, and has a high degree of design freedom.

[0005] The technical solution adopted by the present invention to solve the technical problem is to provide a hidden door handle, comprising:

[0006] A mounting base and a handle, wherein the mounting base is provided with a mounting slot, the handle can be retracted into the mounting slot so that the handle is in a retracted position, and the handle can be extended from the mounting slot so that the handle is in an extended position;

[0007] a connecting rod mechanism comprising a first connecting rod and a second connecting rod, wherein one end of each of the first connecting rod and the second connecting rod is hinged to the handle, and the other end of each of the first connecting rod and the second connecting rod is slidably disposed on the mounting seat; the connecting rod mechanism can drive the handle to switch between the retracted position and the extended position;

[0008] The driving mechanism includes an actuator, a transmission rod and a driving bracket. The driving bracket is movably arranged in the mounting seat and can drive the first connecting rod and the second connecting rod to slide; one end of the transmission rod is hinged on the mounting seat, and the other end is connected to the driving bracket; the actuator is arranged on the mounting seat, connected to the middle part of the transmission rod, and can drive the transmission rod to rotate.

[0009] Further, a first waist hole is formed in the middle of the transmission rod along the length direction of the transmission rod, and a first protruding column is arranged on the actuator and movably arranged in the first waist hole.

[0010] The actuator is movably arranged to drive the transmission rod to rotate and change the position of the first protruding column in the first waist hole.

[0011] Further, the driving support is slidably arranged on the mounting base, and a second waist hole is formed in the mounting base, and a second protruding column is arranged on the end of the transmission rod close to the second waist hole and movably arranged in the second waist hole.

[0012] Further, the mounting base is arranged with a mounting cavity communicating with the mounting groove, and the actuator, the transmission rod, the first connecting rod and the second connecting rod are arranged in the mounting cavity.

[0013] The driving support is arranged with a first pushing part and a second pushing part, the first pushing part is arranged to drive the first connecting rod to slide along the mounting base, and the second pushing part is arranged to drive the second connecting rod to slide along the mounting base.

[0014] Further, the upper and lower ends of the mounting base are respectively arranged with a first sliding groove and a second sliding groove along the length direction of the mounting base, the end of the first connecting rod away from the handle is arranged with a first sliding pin, the end of the second connecting rod away from the handle is arranged with a second sliding pin, the two ends of the first sliding pin are slidably arranged in the two first sliding grooves, and the two ends of the second sliding pin are slidably arranged in the two second sliding grooves.

[0015] When the first sliding pin slides along the first sliding groove and the second sliding pin slides along the second sliding groove, the handle can be switched between the inner collection position and the outer expansion position.

[0016] Further, the mounting base is further arranged with a first track groove, the second connecting rod is arranged with a third protruding column, the third protruding column is arranged in the first track groove and can slide along the first track groove.

[0017] When the connecting rod mechanism drives the handle to switch from the inner collection position to the outer expansion position, the third protruding column slides from one end of the first track groove to the other end of the first track groove.

[0018] Further, the first track groove is a long slot or an arc-shaped slot.

[0019] Furthermore, a first limiting structure is provided on the third protrusion, a second limiting structure is provided on the mounting seat, a return spring is provided between the first limiting structure and the second limiting structure, and when the handle switches from the retracted position to the extended position, the return spring is compressed.

[0020] Furthermore, the mounting seat is further provided with a second track groove connected to the first slide groove, the angle between the second track groove and the first slide groove is an obtuse angle, and the first sliding pin can slide along the first slide groove and the second track groove;

[0021] When the handle is switched to the extended position, the handle is pulled outward, and the end of the handle close to the first connecting rod can be rotated outward, and the first sliding pin slides from one end of the second track groove to the other end of the second track groove.

[0022] Furthermore, a return torsion spring is provided on the second connecting rod, and the return torsion spring includes two torsion arms, wherein one torsion arm is against the handle, and the other torsion arm is against the second connecting rod.

[0023] Compared with the prior art, the present invention has at least the following beneficial effects:

[0024] In the present invention, the concealed door handle cannot accommodate a large actuator due to the limited mounting space of the mounting base. Conventional actuators have insufficient travel to switch the handle from the retracted to the extended position. A transmission rod is provided on the mounting base. One end of the transmission rod is hinged to the mounting base, serving as the rotation center of the transmission rod. The other end of the transmission rod is connected to a drive bracket. The actuator's telescopic shaft is connected to the middle of the transmission rod. The actuator's telescopic movement drives the transmission rod to rotate, thereby causing the drive bracket to slide along the mounting base. During this movement, the transmission rod's rotation center is at the hinge point between the transmission rod and the mounting base. Power is input to the actuator connected to the middle of the transmission rod, and the power input radius is smaller than the length of the transmission rod. Power is output at the end of the transmission rod connected to the drive bracket, and the power output radius is equal to the length of the transmission rod. Therefore, the power input radius is smaller than the power output radius. This is equivalent to amplifying the actuator's travel after transmission by the transmission rod, so that the travel is sufficient to drive the handle between the retracted and extended positions. The overall structure is compact and occupies little space. A first track groove is provided on the mounting base. When the handle is switched between the retracted position and the extended position, the movement trajectory of the handle is determined by the cooperation between the third boss and the first track groove. In this solution, the first track groove can be correspondingly provided in various styles such as a long strip groove or an arc groove to realize various movement trajectories of the handle, and the handle can be switched between the two positions, with a high degree of design freedom. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the hidden door handle (retracted position) of the present invention installed on a vehicle door;

[0026] Figure 2 for Figure 1 Exploded diagram;

[0027] Figure 3 for Figure 1 Schematic diagram of the structure from another perspective (doors removed);

[0028] Figure 4 It is a structural diagram showing the handle in the extended position;

[0029] Figure 5 for Figure 4 Schematic diagram of the structure after the handle in FIG is pulled outward;

[0030] Figure 6 It is a structural diagram of the driving mechanism;

[0031] Figure 7 This is a schematic diagram of the assembly of the drive bracket, connecting rod mechanism and handle (showing the slide groove and track groove);

[0032] Figure 8 This is a schematic diagram of the structure of the door handle when unlocked with a key.

[0033] In the picture:

[0034] 1. Mounting seat; 10. Mounting slot; 11. Mounting cavity; 12. First slide slot; 13. Second slide slot; 14. First track slot; 15. Second track slot; 16. Second limiting structure;

[0035] 2. Handle;

[0036] 3. Connecting rod mechanism; 30. First connecting rod; 301. First sliding pin; 31. Second connecting rod; 311. Third boss; 312. First limiting structure; 313. Second sliding pin;

[0037] 4. Driving mechanism; 40. Actuator; 401. First boss; 41. Transmission rod; 411. First waist hole; 412. Second boss; 42. Driving bracket; 421. Second waist hole; 422. First push portion; 423. Second push portion;

[0038] 5. Return spring;

[0039] 6. Reset torsion spring;

[0040] 7. Car door; 70. Sealing ring. DETAILED DESCRIPTION

[0041] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0042] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, in the present invention, descriptions such as "first," "second," and "one" are for descriptive purposes only and should not be understood to indicate or imply their relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0044] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0046] like Figures 1-4 As shown, a hidden door handle mainly includes: a mounting base 1, a handle 2, a connecting rod mechanism 3 and a driving mechanism 4.

[0047] Mounting base 1 and handle 2: The mounting base 1 is provided with a mounting slot 10. The handle 2 can be retracted into the mounting slot 10 to be in the retracted position, and can be extended from the mounting slot 10 to be in the extended position. When the handle 2 is retracted into the mounting slot 10, it is hidden in the mounting slot 10. When the door handle is installed on the vehicle door 7, a sealing ring 70 is also provided on the outer ring of the handle 2. When the handle 2 is hidden in the mounting slot 10, that is, when the handle 2 is hidden in the vehicle door 7, it is aesthetically pleasing. When the vehicle door 7 needs to be opened, the handle 2 needs to be pulled to unlock it, so the handle 2 needs to be first exposed, that is, switched to the extended position.

[0048] The connecting rod mechanism 3 includes a first connecting rod 30 and a second connecting rod 31. One end of each of the first connecting rod 30 and the second connecting rod 31 is hinged to the handle 2, and the other end of each of the first connecting rod 30 and the second connecting rod 31 can be slidably disposed on the mounting base 1. The first connecting rod 30 and the second connecting rod 31 slide with the mounting base 1 by means of a sliding pin and a sliding groove. The connecting rod mechanism 3 can drive the handle 2 to switch between the retracted position and the extended position. The mounting base 1, the first connecting rod 30, the second connecting rod 31 and the handle 2 form a planar four-bar mechanism. In actual use, the mounting base 1 is fixed. By simultaneously driving the first connecting rod 30 and the second connecting rod 31, the handle 2 can be driven to move, thereby achieving the switching of the position of the handle 2.

[0049] Drive mechanism 4: It includes an actuator 40, a transmission rod 41, and a drive bracket 42. The drive bracket 42 is movably mounted in the mounting base 1. Specifically, the drive bracket 42 is slidably mounted on the mounting base 1 and drives the first connecting rod 30 and the second connecting rod 31 to slide, thereby driving the handle 2 to move. One end of the transmission rod 41 is hinged to the mounting base 1, and the other end of the transmission rod 41 is connected to the drive bracket 42. The actuator 40 is mounted on the mounting base 1 and connected to the middle portion of the transmission rod 41, and can drive the transmission rod 41 to rotate.

[0050] In actual use, due to the limited installation space of the mounting base 1, a large actuator 40 cannot be used in this concealed door handle. If a large actuator 40 is used, it will easily interfere with the glass on the vehicle door 7, and the stroke of a conventional actuator 40 is insufficient to switch the handle 2 from the retracted position to the extended position. A transmission rod 41 is provided on the mounting base 1. One end of the transmission rod 41 is hinged to the mounting base 1, serving as the rotation center of the transmission rod 41. The other end of the transmission rod 41 is connected to the drive bracket 42. The telescopic shaft of the actuator 40 is connected to the middle of the transmission rod 41. The telescopic movement of the actuator 40 drives the transmission rod 41 to rotate, thereby causing the drive bracket 42 to slide along the mounting base 1. During this movement, the rotation center of the transmission rod 41 is the hinge position of the transmission rod 41 and the mounting base 1, the power input position is the actuator 40 connected to the middle of the transmission rod 41, and the power input radius is smaller than the length of the transmission rod 41; the power output position is the end of the transmission rod 41 connected to the drive bracket 42, and the power output radius is the length of the transmission rod 41; therefore, the power input radius is smaller than the power output radius, which is equivalent to the stroke of the actuator 40 being amplified after being transmitted by the transmission rod 41, so that the stroke can satisfy the driving force of the handle 2 to switch between the retracted position and the extended position. The overall structure is compact and occupies little space.

[0051] like Figure 6 As shown, a first waist hole 411 is provided in the middle of the transmission rod 41 along the length direction of the transmission rod 41, and a first boss 401 is provided on the actuator 40. The actuator 40 includes a main body and a fixed block. The main body has a telescopic shaft, and the fixed block is fixedly connected to the telescopic shaft. The first boss 401 is located on the fixed block and is integrally formed with the fixed block. Because it is inconvenient to directly set the first boss 401 on the telescopic shaft, a transition is made through a fixed block. The first boss 401 is movably inserted into the first waist hole 411; the actuator 40 can move telescopically to drive the transmission rod 41 to rotate and change the position of the first boss 401 in the first waist hole 411. Since the actuator 40 drives the rotation of the transmission rod 41 through its own linear telescopic movement, it is necessary to open the first waist hole 411 on the transmission rod 41 to ensure that the actuator 40 will not get stuck during the telescopic movement. The driving bracket 42 is slidably arranged on the mounting base 1, and a second waist hole 421 is opened on the mounting base 1. A second protrusion 412 is provided at one end of the transmission rod 41 close to the second waist hole 421, and the second protrusion 412 is movably passed through the second waist hole 421. Similarly, since the movement direction of the transmission rod 41 is different from the movement direction of the driving bracket 42, if the second waist hole 421 is not opened on the driving bracket 42, the driving bracket 42 will be stuck.

[0052] The mounting base 1 is provided with a mounting cavity 11 that is connected to the mounting groove 10. The actuator 40, the transmission rod 41, the first connecting rod 30, and the second connecting rod 31 are all arranged in the mounting cavity 11, that is, they are all accommodated in the mounting cavity 11 of the mounting base 1 to ensure that they are not affected by the outside world during operation. The driving bracket 42 is provided with a first push portion 422 and a second push portion 423. The first push portion 422 can drive the first connecting rod 30 to slide along the mounting base 1, and the second push portion 423 can drive the second connecting rod 31 to slide along the mounting base 1. A through groove is provided on the driving bracket 42 near the second connecting rod 31, and the second connecting rod 31 is located in the through groove. That is, during the arrangement of the present hidden door handle 2, the driving bracket 42 is hollowed out, and the second connecting rod 31 is movably arranged in the through groove to fully utilize the space in the longitudinal direction of the mounting base 1 and improve the compactness of the overall structure.

[0053] like Figure 2-Figure 5 as well as Figure 7 As shown, the mounting base 1 has a first slide groove 12 and a second slide groove 13 at its upper and lower ends, respectively, along its length. The first connecting rod 30 has a first sliding pin 301 at its end away from the handle 2, and the second connecting rod 31 has a second sliding pin 313 at its end away from the handle 2. The first sliding pin 301 is slidably disposed in the two first slide grooves 12, while the second sliding pin 313 is slidably disposed in the two second slide grooves 13. When the first sliding pin 301 slides along the first slide groove 12 and the second sliding pin 313 slides along the second slide groove 13, the handle 2 can be driven to switch between the retracted position and the extended position. The first sliding pin 301 cooperates with the first slide groove 12, and the second sliding pin 313 cooperates with the second slide groove 13, forming surface contact. This reduces the pressure on the connecting rod mechanism 3 and the handle 2 as a whole, provides a strong load-bearing capacity, and offers excellent impact and wear resistance.

[0054] A first trajectory groove 14 is also provided on the mounting base 1, and a third boss 311 protrudes from the second connecting rod 31. The third boss 311 is inserted into the first trajectory groove 14 and can slide along the first trajectory groove 14. The first trajectory groove 14 is preferably a long groove or an arc groove, which determines the motion trajectory of the handle 2 when switching between the retracted position and the extended position. In this embodiment, the first trajectory groove 14 can be configured into various styles such as long grooves or arc grooves to achieve various motion trajectories of the handle 2, allowing the handle 2 to switch between the two positions, with a high degree of design freedom. When the connecting rod mechanism 3 drives the handle 2 to switch from the retracted position to the extended position, the third boss 311 slides from one end of the first trajectory groove 14 to the other end of the first trajectory groove 14. In which, a first limiting structure 312 is provided on the third protrusion, and a second limiting structure 16 is provided on the mounting seat 1. A reset spring 5 is provided between the first limiting structure 312 and the second limiting structure 16, and when the handle 2 is switched from the retracted position to the extended position, the reset spring 5 is compressed, so that when the handle 2 is switched from the extended position to the retracted position, the elastic force of the reset spring 5 can quickly reset the handle 2 and the connecting rod mechanism 3.

[0055] The mounting base 1 also defines a second track groove 15 that communicates with the first track groove 12. The included angle between the second track groove 15 and the first track groove 12 is obtuse, and the first sliding pin 301 can slide along the first track groove 12 and the second track groove 15. When the handle 2 is switched to the extended position, the handle 2 is pulled outward, causing the end of the handle 2 proximal to the first connecting rod 30 to rotate outward, and the first sliding pin 301 slides from one end of the second track groove 15 to the other end.

[0056] During the entire movement of the handle 2, the handle 2 is first switched from the retracted position to the extended position, and the first sliding pin 301 slides from one end of the first sliding groove 12 to the other end, reaching the end close to the second track groove 15 (such as Figure 4 (as shown); when the handle 2 is pulled outward, the first sliding pin 301 slides from one end of the second track groove 15 to the other end. The handle 2 transmits an unlocking signal to the control mechanism for unlocking the vehicle door 7, thereby unlocking the vehicle door 7. A return torsion spring 6 is mounted on the second connecting rod 31. This return torsion spring 6 comprises two torsion arms, one of which abuts against the handle 2 and the other against the second connecting rod 31. After a person manually pulls the handle 2 to open the vehicle door 7, the force applied to the handle 2 is removed, and the return torsion spring 6 quickly returns the handle 2 to its extended position.

[0057] In addition, if Figure 8As shown, when the car is without power, the actuator 40, i.e., the telescopic motor, cannot function properly. In this case, the door 7 cannot be unlocked by the actuator 40. In this case, the handle 2, which is closest to the actuator 40, can be pressed and the other end of the handle 2 can be rotated outward to expose the key slot. The key can then be inserted into the key slot and turned to unlock the door 7. This prevents the door 7 from being unable to open when the car is out of power.

[0058] During use, under normal conditions, the handle 2 is hidden in the mounting groove 10 and is in the retracted position; when the vehicle door 7 needs to be opened, the actuator 40, that is, the telescopic motor, extends, driving the transmission rod 41 to rotate; the transmission rod 41 drives the driving bracket 42 to slide along the mounting base 1; the driving bracket 42 drives the first connecting rod 30 and the second connecting rod 31 to move, thereby switching the handle 2 from the retracted position to the extended position, and the handle 2 protrudes outward on the vehicle door 7. At the same time, the first sliding pin 301 moves along the first sliding groove 12, the second sliding pin 313 moves along the second sliding groove 13, and the third protrusion 311 moves along the first track groove 14; by manually pulling one end of the handle 2 outward to continue to expand outward, at the same time, the first sliding pin 301 moves along the second track groove 15, the vehicle door 7 can be opened.

[0059] In this solution, the overall structure of the hidden door handle is compact, occupies a small space, can enlarge the stroke of the actuator 40, and has a high degree of design freedom.

Claims

1. A hidden door handle, characterized in that: include: A mounting base and a handle, wherein the mounting base is provided with a mounting slot, the handle can be retracted into the mounting slot so that the handle is in a retracted position, and the handle can be extended from the mounting slot so that the handle is in an extended position; a connecting rod mechanism comprising a first connecting rod and a second connecting rod, wherein one end of each of the first connecting rod and the second connecting rod is hinged to the handle, and the other end of each of the first connecting rod and the second connecting rod is slidably disposed on the mounting seat; the connecting rod mechanism can drive the handle to switch between the retracted position and the extended position; a driving mechanism comprising an actuator, a transmission rod, and a driving bracket, wherein the driving bracket is movably disposed in the mounting seat and can drive the first connecting rod and the second connecting rod to slide; One end of the transmission rod is hinged on the mounting seat, and the other end is connected to the driving bracket; the actuator is arranged on the mounting seat, connected to the middle part of the transmission rod, and can drive the transmission rod to rotate; in, A first waist hole is formed in the middle of the transmission rod along the length of the transmission rod, and a first protrusion is provided on the actuator. The first protrusion is movably inserted into the first waist hole. The actuator can move telescopically to drive the transmission rod to rotate and change the position of the first protrusion in the first waist hole. The driving bracket is slidably arranged on the mounting base, and a second waist hole is formed on the mounting base. A second convex column is provided at one end of the transmission rod close to the second waist hole, and the second convex column is movably inserted into the second waist hole. The mounting seat is provided with a mounting cavity communicated with the mounting groove, and the actuator, the transmission rod, the first connecting rod and the second connecting rod are all arranged in the mounting cavity; the driving bracket is provided with a first pushing portion and a second pushing portion, the first pushing portion can drive the first connecting rod to slide along the mounting seat, and the second pushing portion can drive the second connecting rod to slide along the mounting seat; The upper and lower ends of the mounting seat are respectively provided with a first sliding groove and a second sliding groove along the length direction of the mounting seat, the first connecting rod has a first sliding pin at the end away from the handle, and the second connecting rod has a second sliding pin at the end away from the handle, the two ends of the first sliding pin are respectively slidably arranged in the two first sliding grooves, and the two ends of the second sliding pin are respectively slidably arranged in the two second sliding grooves; when the first sliding pin slides along the first sliding groove and the second sliding pin slides along the second sliding groove, the handle can be driven to switch between the retracted position and the extended position.

2. The hidden door handle according to claim 1, characterized in that: The mounting seat is further provided with a first track groove, and the second connecting rod is provided with a third protrusion, the third protrusion is passed through the first track groove and can slide along the first track groove; When the link mechanism drives the handle to switch from the retracted position to the extended position, the third protrusion slides from one end of the first track groove to the other end of the first track groove.

3. The hidden door handle according to claim 2, characterized in that: The first track groove is a long groove or an arc groove.

4. The hidden door handle according to claim 2, characterized in that: A first limiting structure is provided on the third boss, a second limiting structure is provided on the mounting seat, a return spring is provided between the first limiting structure and the second limiting structure, and when the handle switches from the retracted position to the extended position, the return spring is compressed.

5. The hidden door handle according to claim 2, characterized in that: The mounting seat is further provided with a second track groove connected to the first slide groove, the angle between the second track groove and the first slide groove is an obtuse angle, and the first sliding pin can slide along the first slide groove and the second track groove; When the handle is switched to the extended position, the handle is pulled outward, and the end of the handle close to the first connecting rod can be rotated outward, and the first sliding pin slides from one end of the second track groove to the other end of the second track groove.

6. The hidden door handle according to claim 5, characterized in that: A return torsion spring is provided on the second connecting rod. The return torsion spring includes two torsion arms, wherein one torsion arm abuts against the handle, and the other torsion arm abuts against the second connecting rod.

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