Locking mechanism, door cover and automobile

Abstract

The present invention provides a locking mechanism, comprising an inner sheath and an outer sheath sleeved on the inner sheath, wherein a limit groove for engagement is provided on the inner wall of the outer sheath, and further comprising a locking mechanism arranged between the limit groove and the inner sheath, and a pulling mechanism capable of opening the locking mechanism by pulling, wherein when the inner sheath and the outer sheath are in a maximum extension state, the locking mechanism can be engaged in the limit groove to limit sliding, and when the pulling mechanism is pulled, the locking mechanism can be opened from the limit groove to allow the inner sheath and the outer sheath to contract and move. When the inner sheath and the outer sheath are in a maximum relative position, the locking mechanism is engaged and fixed to avoid sliding and ensure safety. When the pulling mechanism is pulled, the locking mechanism can be opened, and the inner sheath and the outer sheath can contract and move.

Description

Technical Field

[0001] The invention relates to the field of opening a car door cover, and in particular to a locking mechanism, a door cover and a car. Background Art

[0002] At present, cars on the market usually provide door cover opening limit / support functions, such as the door is limited by a limiter, the hood is supported by a gas spring, and the trunk is supported by a gas spring or an electric strut. The above limit / support system needs to consider the lightness of the operating force. The limit force / support force should not be too large, usually within the range of 40N to 70N, otherwise customers will complain when the door cover is closed manually. However, the above limit force / support force makes the door cover limit / support function less adaptable to the environment and less reliable, as shown in the following scenario.

[0003] (1) In strong winds, the door limit force cannot resist the wind load and is blown closed. In addition to the inconvenience of operation, it also brings certain safety hazards: for example, when a person pushes the door open to get out of the car, he pushes the door open with his hand and stretches his legs out of the car. If he lets go at this time, the strong wind will blow the door closed, or his legs may be injured.

[0004] (2) When driving uphill, for example, the weight of the door increases along the hinge axis, thereby overcoming the limiting force provided by the limiter, causing the door to close unexpectedly and making operation inconvenient;

[0005] (3) In low-temperature snow-loaded environments, the low temperature will reduce the gas spring force, and the snow on the hood will generate an additional external force to close the hood. Under this condition, the gas spring is usually unable to support the hood. If a person lowers his head inside the hood to perform maintenance or other operations on the cabin, the hood may suddenly fall, causing a risk of injuring the person's head;

[0006] (4) When the car is turned off and the driver or passengers are sitting or lying in the trunk (especially the trunk of an SUV with the rear seats folded down) to rest, the trunk cannot be reliably supported and may be closed by external force, heavy objects, or other people's misoperation, posing certain safety hazards.

[0007] The invention provides a locking mechanism, a door cover and a car, which can effectively keep the door cover open. Summary of the invention

[0008] The purpose of the embodiments of the present invention is to provide a locking mechanism, a door cover and a car, which solve the problems existing in the above-mentioned background technology.

[0009] In order to achieve the above-mentioned purpose, an embodiment of the present invention provides a locking mechanism, including an inner sheath and an outer sheath sleeved on the inner sheath, a limit groove for engagement is provided on the inner wall of the outer sheath, and also includes a locking mechanism arranged between the limit groove and the inner sheath and a pulling mechanism that can open the locking mechanism by pulling, when the inner sheath and the outer sheath are in the maximum extension state, the locking mechanism can be engaged in the limit groove to limit sliding, and when the pulling mechanism is pulled, the locking mechanism can be opened from the limit groove to allow the inner sheath and the outer sheath to shrink and move. When the inner sheath and the outer sheath are in the maximum relative position, the locking mechanism is engaged and fixed to avoid sliding and ensure safety. When the pulling mechanism is pulled, the locking mechanism can be opened, and the inner sheath and the outer sheath can shrink and move.

[0010] Optionally, the locking mechanism includes a locking block located in the limiting groove, and the inner sheath is provided with a mounting groove for guiding the locking block, and the locking block is connected to the inner cavity bottom of the mounting groove via a spring. Under the action of the spring, the locking block slides into the limiting groove to achieve fixation, thereby preventing the inner sheath and the outer sheath from relative expansion and contraction.

[0011] Optionally, the pulling mechanism includes a pull wire connected to the inner end of the locking block, and the pull wire passes through the bottom of the installation groove into the inner sheath, and passes out from the end of the inner sheath away from the outer sheath to facilitate pulling and applying force. When the pull wire is pulled, the locking block enters the installation groove, and the inner sheath can shrink along the outer sheath. Here, the pulling mechanism can also be driven by a motor, and opened by the motor winding time.

[0012] Optionally, a guide groove along the axis direction of the outer sheath is provided on one side of the limit groove, and the free end of the outer sheath is rotatably installed to facilitate the rotational force application, and also includes a torsion spring installed at the inner end of the inner sheath, and the other end of the torsion spring is installed in the guide groove and can slide along the guide groove. One end of the torsion spring is fixed to the inner sheath, and the other end is in the guide groove and moves along the guide groove. When the locking block is located in the limit groove, the torsion spring has elastic potential energy. After the pull wire is pulled, the locking block slides out of the limit groove. At the same time, under the action of the torsion spring, the outer sheath is driven to rotate, thereby prompting the locking block to slide into the guide groove. The guide groove is set along the length direction of the outer sheath. Therefore, the inner sheath can shrink and move relative to the outer sheath.

[0013] Optionally, the depth of the guide groove is less than the depth of the limit groove so that the locking block can slide out during rotation, and the two end faces of the guide groove along the rotation direction are inclined surfaces for easy sliding out. When the inner and outer sheaths are extended to the maximum position, the locking block needs to slide into the limit groove again. At this time, the outer sheath is rotated and the spring is squeezed. The inclined surface is set to facilitate sliding out, and the shallow depth is also for easy sliding out.

[0014] Optionally, the width of the guide groove is greater than the width of the limiting groove to reduce the friction force when the locking block slides. When the locking block slides in the guide groove, the resistance is smaller.

[0015] Optionally, a plurality of the limiting grooves are symmetrically arranged, and the guide groove is located between two adjacent limiting grooves.

[0016] Optionally, the installation slot is provided with blocks that can press against the locking block from both sides, and the opposite ends of the two blocks are connected to rubber springs, and the other ends of the rubber springs are fixed in the installation slot to enable the blocks to elastically buffer the sliding locking block. When the locking block slides into the limiting slot, there is impact and vibration, and the setting of the rubber spring enables the block to buffer the locking block and reduce the impact.

[0017] Optionally, an inclined guide surface is provided on the inner side of one end opposite to the two stoppers, which facilitates the sliding of the locking block. The guide surface plays a guiding role, facilitating the sliding of the locking block.

[0018] A door cover includes the above locking mechanism. The door cover here includes a trunk, a side door, a hood, etc., and is not limited to a car, but can also be an off-road vehicle and a carriage, etc.

[0019] A car comprises the above-mentioned door cover.

[0020] One of the above technical solutions has the following advantages or beneficial effects:

[0021] 1. When the trunk is opened, the locking block is stuck in the limit groove, thereby limiting the relative sliding of the inner cover and the outer cover, ensuring that the trunk door will not be closed, which is safer;

[0022] 2. When you need to close the trunk door, pull the cable and the locking block will slide out of the limit slot, so that you can close the trunk door. For electric trunks, the cable can be driven by the motor, which is more convenient and intelligent.

[0023] 3. The setting of the torsion spring can drive the outer sleeve to slide in and rotate when the locking block slides out of the limit groove, and the locking block slides into the guide groove. When locking again, the outer sleeve is rotated, and the inner wall of the guide groove is inclined, which is convenient for the locking block to slide out and get stuck in the limit groove again;

[0024] 4. A stopper and a rubber spring are provided in the limit groove to provide buffering when the locking block slides in. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A structural schematic diagram of a locking mechanism provided by an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the position of a locking block in a locking state of a locking mechanism provided by an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of the position of a locking block in an unlocked state of a locking mechanism provided by an embodiment of the present invention.

[0028] In the figure: 1, inner sheath; 2, outer sheath; 21, limit groove; 22, guide groove; 3, locking block; 31, installation groove; 4, spring; 5, torsion spring; 6, pull wire; 7, stopper; 71, guide surface; 8, rubber spring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1-3 As shown, an embodiment of the present invention provides a locking mechanism, including an inner sheath 1 and an outer sheath 2 sleeved on the inner sheath 1, a limit groove 21 for engagement is provided on the inner wall of the outer sheath 2, and also includes a locking mechanism arranged between the limit groove and the inner sheath 1 and a pulling mechanism that can open the locking mechanism by pulling, when the inner sheath 1 and the outer sheath 2 are in the maximum extension state, the locking mechanism can be inserted into the limit groove 21 to limit sliding, and when the pulling mechanism is pulled, the locking mechanism can be opened from the limit groove 21 to allow the inner sheath 1 and the outer sheath 2 to shrink and move. When the inner sheath 1 and the outer sheath 2 are in the maximum relative position, the locking mechanism is locked and fixed to avoid sliding and ensure safety. When the pulling mechanism is pulled, the locking mechanism can be opened, and the inner sheath 1 and the outer sheath 2 can shrink and move.

[0031] The locking mechanism includes a locking block 3 located in the limiting groove 21, and the inner sheath 1 is provided with a mounting groove 31 for guiding the locking block 3, and the locking block 3 is connected to the bottom of the inner cavity of the mounting groove 31 through a spring 4. Under the action of the spring 4, the locking block 3 slides into the limiting groove 21 to achieve fixation, thereby preventing the inner sheath 1 and the outer sheath 2 from relative expansion and contraction.

[0032] The pulling mechanism includes a pull wire 6 connected to the inner end of the locking block 3, and the pull wire 6 passes through the bottom of the installation groove 31 into the inner sheath 1, and passes out from the end of the inner sheath 1 away from the outer sheath 2 to facilitate pulling and applying force. When the pull wire 6 is pulled, the locking block 3 enters the installation groove 31, and the inner sheath 1 can shrink along the outer sheath 2. Here, the pulling mechanism can also be driven by a motor, and the motor winding time is opened.

[0033] A guide groove 22 along the axial direction of the outer sheath 2 is provided on one side of the limiting groove 21, and the free end of the outer sheath 2 is rotatably installed to facilitate the rotational force application. It also includes a torsion spring 5 installed at the inner end of the inner sheath 1, and the other end of the torsion spring 5 is installed in the guide groove 22 and can slide along the guide groove 22. One end of the torsion spring 5 is fixed to the inner sheath 1, and the other end is in the guide groove 22 and moves along the guide groove 22. When the locking block 3 is located in the limiting groove 21, the torsion spring 5 has elastic potential energy. After the pull wire 6 is pulled, the locking block 3 slides out of the limiting groove 21. At the same time, under the action of the torsion spring 5, the outer sheath 2 is driven to rotate, thereby prompting the locking block 3 to slide into the guide groove 22. The guide groove 22 is set along the length direction of the outer sheath 2. Therefore, the inner sheath 1 can shrink and move relative to the outer sheath 2. The depth of the guide groove 22 is less than the depth of the limiting groove 21 so that the locking block 3 can slide out during rotation, and the two end faces of the guide groove 22 along the rotation direction are inclined surfaces for easy sliding out. When the inner sleeve 1 and the outer sleeve 2 are extended to the maximum position, the locking block 3 needs to slide into the limiting groove 21 again. At this time, the outer sleeve 2 is rotated and the spring 4 is squeezed. The inclined surface is set to facilitate sliding out, and the depth is shallower, which is also for easy sliding out. The width of the guide groove 22 is greater than the width of the limiting groove 21 to reduce the friction force when the locking block 3 slides. When the locking block 3 slides in the guide groove 22, the resistance is smaller. A plurality of limiting grooves 21 are symmetrically arranged, and the guide groove 22 is located between two adjacent limiting grooves 21.

[0034] The mounting groove 31 is provided with a block 7 that can press against the locking block 3 from both sides. The opposite ends of the two block 7 are connected to a rubber spring 8. The other end of the rubber spring 8 is fixed in the mounting groove 31 to enable the block 7 to elastically buffer the locking block 3 after it slides in. When the locking block 3 slides into the limiting groove 21, there is impact and vibration. The setting of the rubber spring 8 enables the block 7 to buffer the locking block 3 and reduce the impact. An inclined guide surface 71 is provided on the inner side of the opposite end of the two block 7 to facilitate the sliding of the locking block 3. The guide surface 71 plays a guiding role and facilitates the sliding of the locking block 3. Chamfers are provided at both ends of the end of the locking block 3 that fits the outer sheath 2 along the rotation direction. This is convenient for the locking block 3 to slide out of the guide groove 22 when it rotates.

[0035] A door cover includes the above locking mechanism. The door cover here includes a trunk, a side door, a hood, etc., and is not limited to the door cover on the car, and can also be used in other places, such as a truck, a carriage, etc.

[0036] A car comprises the above-mentioned door cover.

[0037] The locking mechanism can be used on the trunk, side door and hood of the trunk, etc. One end of the outer cover 2 is installed on the trunk door or trunk, and the inner cover 1 is installed on the trunk or trunk door. At this time, the inner cover 1 needs to be hinged, while if the inner cover 1 and the outer cover 2 are installed on the limiter, gas spring or electric strut, the inner cover 1 does not need to be hinged.

[0038] Working principle: When the trunk is opened, the locking block 3 is stuck in the limit groove 21, thereby limiting the relative sliding of the inner sleeve 1 and the outer sleeve 2, ensuring that the trunk door will not be closed, which is safer. When the trunk door needs to be closed, pull the pull wire 6, and the locking block 3 slides out of the limit groove 21, so that the trunk door can be closed. For electric trunks, the pull wire 6 can be driven by the motor winding, which is more convenient and intelligent. The setting of the torsion spring 5 can drive the outer sleeve 2 to slide and rotate when the locking block 3 slides out of the limit groove 21, and the locking block 3 slides into the guide groove 22. The locking block 3 slides in the guide groove 22. When locking again, the outer sleeve 2 is rotated, and the inner wall of the guide groove 22 is inclined, which is convenient for the locking block 3 to slide out and be stuck in the limit groove 21 again. The limit groove 21 is provided with a stopper 7 and a rubber spring 8, which can provide buffering when the locking block 3 slides in.

[0039] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A locking mechanism, comprising an inner sheath (1) and an outer sheath (2) sleeved on the inner sheath (1), characterized in that: The inner wall of the outer sheath (2) is provided with a limit groove (21) for engagement, and further comprises a locking mechanism arranged between the limit groove and the inner sheath (1) and a pulling mechanism capable of opening the locking mechanism by pulling; when the inner sheath (1) and the outer sheath (2) are in a maximum extended state, the locking mechanism can be locked into the limit groove (21) to limit sliding; and when the pulling mechanism is pulled, the locking mechanism can be opened from the limit groove (21) to allow the inner sheath (1) and the outer sheath (2) to contract and move; The locking mechanism comprises a locking block (3) located in the limiting groove (21), and a mounting groove (31) for guiding the locking block (3) is provided on the inner sleeve (1), and the locking block (3) is connected to the bottom of the inner cavity of the mounting groove (31) via a spring (4); The pulling mechanism comprises a pull wire (6) connected to the inner end of the locking block (3), and the pull wire (6) passes through the bottom of the installation groove (31) into the inner sheath (1), and passes outward from the end of the inner sheath (1) away from the outer sheath (2) to facilitate pulling and applying force; A guide groove (22) along the axial direction of the outer sleeve (2) is provided on one side of the limiting groove (21), and the free end of the outer sleeve (2) is rotatably installed to facilitate rotational force application. It also includes a torsion spring (5) installed at the inner end of the inner sleeve (1), and the other end of the torsion spring (5) is installed in the guide groove (22) and can slide along the guide groove (22).

2. The locking mechanism according to claim 1, characterized in that: The depth of the guide groove (22) is smaller than the depth of the limiting groove (21) so that the locking block (3) can slide out during rotation, and the two end surfaces of the guide groove (22) along the rotation direction are inclined surfaces for easy sliding out.

3. The locking mechanism according to claim 2, characterized in that: The width of the guide groove (22) is greater than the width of the limiting groove (21) so as to reduce the friction force when the locking block (3) slides.

4. The locking mechanism according to claim 1, characterized in that: A plurality of the limiting grooves (21) are symmetrically arranged, and the guide groove (22) is located between two adjacent limiting grooves (21).

5. The locking mechanism according to claim 1, characterized in that: The installation groove (31) is provided with a stopper (7) capable of pressing against the locking block (3) from both sides, and the two ends of the two stoppers (7) facing away from each other are connected to a rubber spring (8), and the other end of the rubber spring (8) is fixed in the installation groove (31) to enable the stopper (7) to elastically buffer the locking block (3) after it slides in.

6. The locking mechanism according to claim 5, characterized in that: An inclined guide surface (71) is provided on the inner side of the opposite end of the two stoppers (7) to facilitate the sliding of the locking block (3).

7. A door cover, characterized in that: It comprises the locking mechanism described in any one of claims 1 to 6.

8. A car, characterized in that: Comprising the door cover described in claim 7.

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