Backdoor opening and closing mechanism

Abstract

To fix an expansion mechanism of a damper used as a support stay for assisting opening / closing of a back door of a vehicle or when the back door is fully opened to an arbitrary position.SOLUTION: A back door 50 includes a back door opening / closing mechanism 10 comprising a damper cylinder 11 and a rod 13 which may expand or contract relative to the damper cylinder 11. A back door stopper 20 which restricts expansion / contraction of the expansion rod 13 is attached to the expansion rod 13 of the back door opening / closing mechanism 10.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a back door opening / closing device that can fix the opening / closing of a vehicle's back door at an arbitrary position and a back door stopper used therefor.

Background Art

[0002] Conventionally, the back door 50 of an automobile is opened upward with an upper hinge as a fulcrum and can be easily opened and closed by applying a relatively small force by a back door opening / closing mechanism 10 provided on the side of the back door (see Patent Document 1, FIG. 17). The back door opening / closing mechanism 10 includes, for example, a damper cylinder 11 and a telescopic rod 13 that can be telescoped with respect to the damper cylinder 11. The force in the direction in which the telescopic rod extends from the damper cylinder, that is, the force that supports the open state of the back door, is prepared so as to be able to sufficiently withstand the weight of the back door 50. Therefore, the state of the opened back door can be maintained.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the following problems exist in the conventional back door opening / closing mechanism. It is not easy to stop the telescopic rod with sufficient force. For example, in the case of a widely used commercial vehicle, the reaction force of the gas damper is about 100 kg·f. To stop the damper cylinder and the rod during the opening / closing of the back door, simply tightening the rod with a hand-turning bolt from the side could not obtain sufficient fixing force. In addition, when attempting to obtain sufficient fixing force by the pressing action of the bolt, a situation occurred where a dent was formed on the surface of the telescopic rod. When there was a dent on the surface of the telescopic rod, a problem occurred in that it increased the gas leakage of the gas damper during telescoping. That is, when opening and closing the back door, there was a need for a means to generate a fixing force for stopping the damper cylinder and the rod, and not to distort the surface and circular shape of the rod. Therefore, an object of the present invention is to provide a back door opening and closing mechanism capable of fixing the telescopic mechanism of a damper used as an opening and closing assist for the back door or a support stay at full open at an arbitrary position, and a back door stopper used therefor.

Means for Solving the Problems

[0005] The present invention has the following features. The back door opening and closing mechanism according to claim 1 is In a back door opening and closing mechanism comprising a damper cylinder and a telescopic rod that can be telescoped with respect to the damper cylinder on the side of the back door, A damper cylinder, A telescopic rod, A clamp fixed to the outer periphery of the damper cylinder 11, A stopper body that clamps the telescopic rod, A handle provided on the stopper body 22 for stopping or releasing the telescoping of the telescopic rod, A plate connecting the stopper body and the clamp, Comprising, Fixing the stopper body and the damper cylinder via the clamp, and By rotating the handle, Adjusting the clamping state of the telescopic rod clamped by the stopper body, A back door opening and closing mechanism configured to regulate the telescoping of the telescopic rod wherein a groove is formed on the outer periphery of the damper cylinder when connecting the plate to the clamp the tip of the plate is inserted into the groove the clamp is wound and tightened from above the plate characterized in that. The backdoor opening and closing mechanism according to claim 2 is A brass member is attached to one tip of the handle, When the handle rotatably installed on the stopper body is advanced in the direction of the telescopic rod, The brass member contacts the telescopic rod, characterized in that the movement of the telescopic rod is stopped. The backdoor stopper according to claim 3 is A member constituting the backdoor opening and closing mechanism, A clamp fixed to the outer periphery of the damper cylinder, A stopper body that sandwiches the telescopic rod, A handle provided on the stopper body for stopping or releasing the expansion and contraction of the telescopic rod, A plate connecting the stopper body and the clamp, characterized by comprising. The backdoor stopper according to claim 4 is A brass member is attached to one tip of the handle, When the handle rotatably installed on the stopper body is advanced in the direction of the telescopic rod, The brass member contacts the telescopic rod, characterized in that the movement of the telescopic rod is stopped.

Advantages of the Invention

[0006] In the present invention, a backdoor stopper can be attached to a backdoor opening and closing mechanism provided on the side of the backdoor to fix the opening and closing of the backdoor at an arbitrary position. That is, in order to fix the backdoor at an arbitrary position, by connecting both a member for fixing the telescopic rod side and a member for fixing the damper cylinder side, the sliding of both can be stopped. In addition, by enabling the stop and release of the telescopic rod side freely, the opening and closing of the back door can be fixed at an arbitrary position. Also, for the back door stopper, fixing to the damper cylinder side can utilize a commercially available rod clamp or hose clamp as a simple jig.

Brief Explanation of Drawings

[0007]

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Mode for Carrying Out the Invention

[0008] Hereinafter, the back door opening / closing mechanism and the back door stopper of the embodiment of the present invention will be specifically described with reference to the drawings.

[0009] <Back Door Opening / Closing Mechanism> Fig. 1 shows the back door opening / closing mechanism of the embodiment of the present invention. (a) shows the case where the telescopic rod is retracted, and (b) shows the case where the telescopic rod is extended. The back door opening / closing mechanism 10 is attached to the side of the back door 50 and includes a damper cylinder 11 filled with gas. The gas in the damper cylinder 11 biases the telescopic rod 13 in the extending direction. The damper cylinder 11 is rotatably and fixedly supported on the back door 50 side, and the telescopic rod 13 is rotatably and fixedly supported on the vehicle body 51 side via a bearing portion.

[0010] Furthermore, a back door stopper 20 for restricting the telescopic movement of the telescopic rod 13 is attached to the damper cylinder 11 and the telescopic rod 13 of the back door opening and closing mechanism 11.

[0011] The back door opening and closing mechanism 11 of the present invention is a back door opening and closing mechanism 10 composed of a damper cylinder 11 and a telescopic rod 13 that can be telescoped with respect to the damper cylinder 11, on the side of the back door 50. It includes a damper cylinder 11, a telescopic rod 13, a clamp 21 fixed to the outer periphery of the damper cylinder 11, a stopper body 22 that clamps the telescopic rod, a handle 23 provided on the stopper body 22 for stopping or releasing the telescopic movement of the telescopic rod 13, and a plate 24 that connects the stopper body 22 and the clamp 21. The stopper body 22 and the damper cylinder 11 are fixed via the clamp 21, and by rotating the handle 23, the clamping state of the telescopic rod 13 clamped by the stopper body 22 is adjusted to regulate the telescopic movement of the telescopic rod 13.

[0012] FIG. 2 shows the members constituting the back door stopper 20 of the embodiment of the present invention. (a) is a perspective view thereof, and (b) is an explanatory view showing how it is attached to the damper cylinder. The back door stopper 20 of the embodiment is a member constituting the back door opening and closing mechanism 10 of the embodiment, and includes a clamp 21 fixed to the outer periphery of the damper cylinder 11, a stopper body 22 that clamps the telescopic rod 13, a handle 23 provided on the stopper body 22 for stopping or releasing the telescopic movement of the telescopic rod 13, and a plate 24 that connects the stopper body 22 and the clamp 21.

[0013] The stopper main body 22 of the embodiment is configured as a pair of a stopper main body A and a stopper main body B that sandwich the telescopic rod 13 from both sides. These rod contact surfaces (the surfaces where the cylindrical portions are formed) face each other and are connected by bolts to sandwich and fix the telescopic rod 13.

[0014] The handle 23 has an L-shaped form, and a male screw cut at one tip is screwed into a female screw formed on the side surface of the stopper main body A. Then, by rotating the other side of the L-shaped handle 23, the tip of the handle 23 advances and retreats in the direction of the telescopic rod 13 along the screw engagement of the stopper main body A. Thus, by rotating the handle 23 screwed to the stopper main body A and pressing and adhering the tip of the handle 23 to the outer surface of the telescopic rod 13, the movement of the telescopic rod 13 can be stopped and it can function as a stopper.

[0015] The plate 24 is a thin plate in which a part of the upper surface of the stopper main body B extends upward, and the tip portion (claw portion) is bent in the direction of the telescopic rod 13 and is inserted into a groove 11a formed on the outer periphery of the damper cylinder 11.

[0016] In the case where the groove 11a is not formed, a friction material (a member with a high friction coefficient, an elastomer material, etc.) is arranged on the outer periphery of the damper cylinder 11, and then the clamp 21 is fixed to the outer periphery of the damper cylinder 11.

[0017] Also, when the clamp 21 is tightened and fixed to the outer periphery of the damper cylinder 11, the distance between the stopper main body 22 and the damper cylinder 11 is fixed by this plate 24.

Example

[0018] Next, the procedure for mounting the backdoor stopper of this embodiment on an existing damper cylinder and telescopic rod will be described. Figure 3 is an explanatory photograph showing the procedure for attaching the backdoor stopper 20 of the embodiment. Figure 4 shows a state where the stopper body A and the stopper body B are fixed so as to sandwich the telescopic rod 13. Figure 5 shows a state where the stopper body 22 is pressed against the outer surface of the telescopic rod 13 and connected and fixed with bolts. Figure 6 shows a state where the handle 23 screwed to the stopper body 22 is rotated upward (↑) by about 1 / 3, the stopper body 22 is firmly fixed in close contact with the outer surface of the telescopic rod 13, and the movement of the telescopic rod 13 is fixed. Figure 7 shows a state where the handle 23 of the stopper body 22 is rotated downward (↓) by about 1 / 3, the handle 23 hangs downward, and the movement of the telescopic rod 13 is released. Figure 8 shows a state where a part of the clamp 21 is opened and inserted into the rod portion. Figure 9 shows a state where the clamp 21 is temporarily fixed loosely on the outer periphery of the damper cylinder 11. Figure 10 shows a state of temporarily fixing the clamp 21 using a wrench. Figure 11 shows a state where the stopper body 22 is raised to the uppermost position and the plate 24 of the stopper body 22 is inserted inside the clamp 21. Figure 12 shows a state where the clamp 21 is tightened and the upper part (claw part) of the plate 24 inserted inside the clamp 21 is brought into close contact with the outer surface of the damper cylinder 11 and temporarily fixed loosely. Figure 13 shows the stopper body 22 rotated left and right about the telescopic rod 13, showing a state of determining a position where the portion hanging down below the handle 23 does not interfere with the black rubber stopper portion of the vehicle body 51. Figure 14 shows a state where the positioning in Figure 13 is performed by rotating the handle 23 to the lower position (with the rod released). FIG. 15 shows a state where, after the handle 23 is positioned so as not to interfere with the black rubber stopper portion of the vehicle body 51, the back door 50 is fully opened, the temporarily fixed clamp 21 is tightened strongly, the plate 24 is closely fixed to the outer surface of the damper cylinder 11, and the distance between the stopper body 22 and the damper cylinder 11 is fixed. FIG. 16 is a photograph showing a state where the back door stopper 20 of the embodiment of the present invention is housed in a small space.

[0019] As shown in FIGS. (3), (4), and (5), the stopper body A and the stopper body B are connected and fixed with bolts with their rod clamping surfaces (the surfaces on which the cylindrical portions are formed) 22a facing each other. At that time, the handle 23 is rotated, and the tip portion screwed into the stopper body A is pressed against and closely attached to the outer surface of the telescopic rod 13, so that the movement of the telescopic rod 13 can be stopped. Thereby, it can function as a stopper. Further, on the outer surface of the telescopic rod 13, instead of pressing the male screw tip portion of the handle 23 with a point pressure, it is pressed with a surface pressure along the outer peripheral shape of the telescopic rod 13. For that purpose, the male screw tip portion of the handle 23 is formed into a concave shape along the outer peripheral shape of the telescopic rod 13, and by bringing this concave shape into surface contact with the outer periphery of the telescopic rod 13, a strong fixing force can be obtained. Also, it is possible to prevent the surface of the telescopic rod 13 from being damaged or distorted from a perfect circular shape.

[0020] For the purpose of preventing this, it is preferable to sandwich the telescopic rod with a member made of a material softer than the surface hardness of the telescopic rod (for example, a brass member or an aluminum alloy member). Thereby, the airtightness of the damper cylinder (gas cylinder) is not impaired either. In the back door stopper of the embodiment, A brass member is attached to the male screw tip portion of the handle that contacts the telescopic rod 13, and when the handle 23 is rotated, the brass member is in surface contact with the telescopic rod 13, so that the surface of the telescopic rod 13 is not damaged or deformed.

[0021] As shown in Fig. (6), when the handle 23 of the stopper body 22 is rotated upward (↑) by about 1 / 3, the brass member is firmly fixed in close contact with the outer surface of the telescopic rod 13, and the movement of the telescopic rod 13 can be stopped.

[0022] On the other hand, as shown in Fig. (7), when the handle 23 of the stopper body 22 is rotated downward (↓) by about 1 / 3, the handle 23 hangs downward, and the stop of the telescopic rod 13 can be released. The handle 23 can perform the stop and release operations by rotating between about 1 / 3 and 1 / 2.

[0023] As shown in Fig. (8), open the clamp 21 and insert it at the telescopic rod 13 part. Here, the clamp 21 is a member fixed to the outer periphery of the damper cylinder 11 side, and in order to be attached to a commercially available telescopic rod 13, it is preferable that a part of it can be opened.

[0024] As shown in Figs. (9) and (10), Temporarily fix the clamp 21 by tightening and loosening it at the damper cylinder 11 part.

[0025] As shown in Fig. (11), raise the stopper body 22 to the uppermost position, and insert the plate (thin plate extending upward) 24 of the stopper body 22 inside the clamp 21. When a groove 11a is formed on the outer surface of the damper cylinder 11, insert the tip (claw part) of the plate 24 into the groove 11a.

[0026] As shown in Fig. (12), tighten the clamp 21 and temporarily fix it loosely so that the plate 24 inserted inside the clamp 21 is in close contact with the outer surface of the damper cylinder 11.

[0027] As shown in Figs. (13) and (14), rotate the handle 23 to a position where it hangs downward, and while closing the back door 50 with the movement of the telescopic rod released, rotate the stopper body 22 left and right about the telescopic rod 13 to determine a position where the handle 23 hanging downward does not interfere with the black rubber stopper portion.

[0028] As shown in Fig. (15), when the position where the handle 23 does not interfere is determined, open the back door 50 fully. In that state, strongly tighten the temporarily fixed clamp 21, fix the plate 24 in close contact with the outer surface of the damper cylinder 11, and connect the plate 24 and the clamp 21. Thereby, the distance between the stopper body 22 and the damper cylinder 11 is fixed. When a groove 11a is formed in the damper cylinder 11, it can be firmly fixed in close contact by strongly winding the clamp 21 and inserting the claw portion above the plate 24 into the groove 11a. Note that in the state shown in Fig. (15), the groove 11a is in a state of being hidden under the clamp 21. The fixing (winding) operation of the clamp 21 is preferably performed using a minus driver, a monkey wrench, a spanner, or the like.

[0029] As shown in Fig. (16), the back door 50 can be closed with the back door stopper 20 of the present embodiment still attached to the damper cylinder 11 and the telescopic rod. There is no need to attach or detach the back door stopper 20 each time. To achieve this, the stopper body 22 is made as small as possible so that the back door stopper 20 and the handle 23 can fit within a small space (see Fig. 16) that can be created when the back door 50 is closed, and the back door 50 can be opened and closed with the back door stopper 20 still attached to the vehicle body 51. Furthermore, by simply operating the handle 23, the opening degree of the back door 50 can be adjusted with one touch. Here, the "extremely small space that can be created when the back door is closed" refers to the space that remains slightly when the back door is closed, as shown in FIG. 16. If the back door stopper 20 and the handle 23 do not fit into this space, the stopper cannot be left attached to the vehicle body 51, resulting in poor convenience.

[0030] As described above, in the back door opening and closing mechanism 10 equipped with the back door stopper 20 of the embodiment, when the handle 23 of the stopper body 22 is rotated about 1 / 3 to the right, the telescopic rod 13 is stopped, and the opening and closing of the back door 50 are fixed. That is, when the handle 23 of the stopper body 22 is rotated about 1 / 3 to the left, the handle 23 hangs downward, and the stop of the telescopic rod 13 is released. The opening and closing of the back door 50 become free (the opening and closing of the back door can be manually operated). Normally, the handle 23 is kept hanging downward.

[0031] In addition, the back door stopper of this embodiment can fix the back door 50 at a desired position simply by attaching a member to the damper equipped on the vehicle body 51. Furthermore, the back door 50 can be opened and closed even with the back door stopper 20 attached. There is no need to attach or remove members. Furthermore, the back door 50 can be fixed at a desired position with the simplicity of just pushing up the handle 23. That is, when an attachment such as a bicycle carrier is attached to the back door 50, the back door becomes heavy, causing the back door to drop below the fully open position. Also, when wet suits used for surfing, diving, fishing, or rain-wet rainwear are hung at the rear end of the back door to dry, the door similarly drops below the fully open position. However, by using the back door stopper of the embodiment, the back door can be held in the fully open position. In addition, devices such as "damper stoppers" have been proposed as tools for such purposes, but they cannot be left attached and need to be attached each time. Furthermore, there is a means of using a rope or the like to hold the back door in a position where it cannot be opened further than the length of the rope, but this means can only be used at the opening and closing positions where the reaction force of the damper acts firmly. Also, it cannot fix the action of the back door trying to close. The back door stopper of the embodiment can be fixed so that the back door cannot be opened and cannot be closed. Furthermore, it can be suitably used when it is desired to leave the back door slightly open, such as when parking in the car on a steamy night or when parking under the scorching sun. There is a device called "Bone Bar" (registered trademark) as a tool for such purposes, but it cannot be left attached and needs to be attached when used. Also, because of its structure like a support bar, it cannot easily adjust the wide or narrow degree of the opening and closing of the back door. The back door stopper of the embodiment can be left attached and can easily adjust the wide or narrow degree of the opening and closing.

Industrial Applicability

[0032] The backdoor opening and closing mechanism and the backdoor stopper of the present invention are devices aimed at enabling easy and convenient adjustment of the opening and closing state of the backdoor. However, they can also be used as devices for restricting the expansion and contraction of general gas dampers used in various parts, such as the opening and closing of the engine hood and the opening and closing of the canopy, not just the damper used as a support stay for the backdoor.

Explanation of Signs

[0033] 10 Backdoor opening and closing mechanism 11 Damper cylinder 11a Groove 13 Telescopic rod 20 Backdoor stopper 21 Clamp 22 Stopper body 22a Rod contact surface 23 Handle 24 Plate 50 Backdoor 51 Vehicle body

Claims

1. In a backdoor opening and closing mechanism comprising a damper cylinder and a telescopic rod that is telescopic with respect to the damper cylinder, on the side of the backdoor, a damper cylinder, a telescopic rod, a clamp fixed to the outer periphery of the damper cylinder 11, a stopper body that clamps the telescopic rod, a handle provided on the stopper body 22 for stopping or releasing the telescopic movement of the telescopic rod, a plate connecting the stopper body and the clamp, is provided, fixing the stopper body and the damper cylinder via the clamp, and by rotating the handle, adjusting the clamping state of the telescopic rod clamped by the stopper body, a backdoor opening and closing mechanism configured to regulate the telescopic movement of the telescopic rod, a groove is formed on the outer periphery of the damper cylinder, when connecting the plate to the clamp, inserting the tip of the plate into the groove, and clamping the clamp from above the plate. A backdoor opening and closing mechanism characterized by this.

2. A brass member is attached to one tip of the handle, when the handle rotatably installed on the stopper body is advanced in the direction of the telescopic rod, the brass member contacts the telescopic rod, The backdoor opening and closing mechanism according to claim 1, characterized in that the movement of the telescopic rod is stopped.

3. A member constituting the backdoor opening and closing mechanism, a clamp fixed to the outer periphery of the damper cylinder, a stopper body that clamps the telescopic rod, a handle provided on the stopper body for stopping or releasing the telescopic movement of the telescopic rod, a plate connecting the stopper body and the clamp, A backdoor stopper characterized by comprising.

4. A brass member is attached to one tip of the handle, when the handle rotatably installed on the stopper body is advanced in the direction of the telescopic rod, the brass member contacts the telescopic rod, The backdoor stopper according to claim 3, characterized in that the movement of the telescopic rod is stopped.

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