JP3834917B2 - Retrofit damper lock - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a locking device for fixing a cylinder type damper in that state when the cylinder type damper is extended.
[0002]
[Prior art]
Cylindrical damper devices using cylinders and rods are frequently used to loosen and tighten the rear hatches of cars, and loosen the bonnet, trunk and forklift engine covers of some models. It is also used to make it.
[0003]
FIG. 6 shows an example in which the damper 16 is attached to the engine cover 14 of the forklift 13. The hinge 15 for opening and closing is provided at the upper right end of the engine cover 14 of the forklift 13, and opening and closing is performed using this as a fulcrum. It has been broken. The damper 16 is fixed to the rear side surface of the passenger compartment of the forklift 13 and the inner side surface of the engine cover 14 so that both ends can be rotated. When the engine cover 14 is closed, the damper 16 is contracted and the engine cover 14 is opened. The damper 16 extends. If the engine cover 14 is light or the extension force of the damper 16 is strong, the engine cover will remain in the same position. Otherwise, the engine cover 14 will gradually descend. This will interfere with engine inspection work.
[0004]
In such a case, in order to lock the engine cover 14 in an open state, that is, in a state in which the damper 16 is extended, it is necessary to replace the damper 16 with a lock function or to provide a separate locking mechanism. .
[0005]
When using a conventional cylindrical damper to open and close the door and lock it in the open position, a locking mechanism such as a stand that is used to fix the hood of the car in an open state is added separately from the damper. Alternatively, it is necessary to purchase and use a damper that incorporates a lock mechanism at the time of manufacture.
[0006]
An example of such a damper is shown in FIG. In FIG. 7, the damper function is as follows. The cylinder 4 is a circular tube with one end closed and one end open, and a buffer material such as gas or liquid is enclosed therein, and a damper action for compression and expansion of the rod by a piston and buffer material (not shown). Is possible. The rod 3 has a rod shape and is connected to the piston and extends to the outside from an opening (not shown) provided in the cylinder 4 to transmit the force in the compression direction of the buffer material from the outside to the piston. It has the function of transmitting the force in the direction of extension of the cushioning material from the outside. The mounting part 5 has a connecting part that can rotate between a connecting part of a vehicle body and a door and a damper comprising the cylinder 4 and the rod 3, and is attached to both ends of a damper that combines the cylinder 4 and the rod 3. In the vicinity of the hinge part such as a door or cover, one end is pivotally connected to the main body side and the other end is pivotally connected to the door side. The direction of 3 is matched and the operation of the damper function by compression and distraction is enabled.
In FIG. 7, a lock member 12 is added to the damper. The lock member 12 has a configuration in which a circular tube having an inner diameter larger than that of the cylinder 4 is connected so as to allow a slight inclination in the vicinity of the connection portion between the rod 3 and the attachment portion 5. The lock member 12 can have a state parallel to the rod 3 and the cylinder 4 and a state slightly inclined by the connecting portion.
[0007]
Therefore, when the lock member 12 is slightly tilted, the end portion thereof is brought into contact with the end portion of the cylinder 4 and can be locked. Further, the lock can be released by making the lock member 12 parallel to the cylinder 4.
In addition, although it cannot be said that it is completely locked, it is a pseudo-locked state that prevents the damper from contracting from the fully extended state unless a strong force is applied by strengthening the force to extend the damper A technique that can be said is also used.
[0008]
[Problems to be solved by the invention]
When locking with another support column, for example, when trying to lock with a car bonnet, etc., first find the other support column on the vehicle body side, then search for a fixing point to stop the support column on the bonnet side and fit another support column It is necessary to lock it, and it is difficult to find a support post or a fixed part in a dark place such as at night. Also, even in a bright place, in the case of an unfamiliar car such as a company car or another person's car, it does not know where the other support is stored, and it takes time and effort to find the front side, right side or left side Furthermore, finding the fixing point is more difficult to find because the back panel of the bonnet has many openings.
[0009]
In the case of another support, in addition to the above, when the work is performed with the bonnet opened, the support may interfere with the work. There are many cases where a separate post is placed on the front side or the right or left side of the bonnet, but there are many cases in which maintenance or repair of the equipment in the vicinity of the separate post is required. Will reduce the work efficiency.
[0010]
In order to eliminate such a column only for locking, a cylindrical damper device with a locking mechanism as shown in FIG. 7 has already been put into practical use.
As described above, in the configuration of FIG. 7, it is possible to lock the damper when the damper is extended, but at present, it is necessary to obtain a damper with a locking mechanism because it is necessary to incorporate the locking mechanism when the damper manufacturer manufactures it. Is necessary and leads to cost increase. Also, since the damper manufacturer does not have a lock mechanism that supports all damper lengths and cylinder thicknesses, it is necessary to use a damper that does not have such a lock mechanism. It is necessary to deal with the above-mentioned another support.
[0011]
An object of the present invention is to provide a low-cost locking mechanism that can be retrofitted and can be used for various dampers.
[0012]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, in the present invention, a cushioning material is attached to the cylinder in order to slow the change when the holding position of the member is changed by being attached to a door-like or arm-like member held at two positions. In a cylindrical damper device in which the rod is movably enclosed, a seat member that can be fixed by being fitted to the rod of the damper, and a rod that is attached to the seat member and is most extended from the cylinder The length is too long to reach the cylinder, it is strong enough to withstand the force of the rod being shortened, and when the rod is most extended from the cylinder, it is no longer parallel to the rod and the rod of the cylinder The seat portion of the present invention is a retrofit damper lock comprising a locking member that abuts against the take-out surface and prevents the rod from being shortened. By fixing the part to the rod, when the door etc. is fully opened, the locking member that was slid parallel to the cylinder will come into contact with the rod take-out surface of the cylinder and the rod will not shrink. Therefore, it is possible to provide a lock means that can be in a locked state even for a damper for which no lock means is prepared by the manufacturer.
[0013]
Further, when releasing the locked state, the rod is moved again by once supporting the door or the like by hand to relieve the force applied to the locking member and returning the locking member to a state parallel to the cylinder.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In the figure, parts having the same function are indicated by the same numbers.
[0015]
In FIG. 1, the basic damper function is as follows, as in FIG. The cylinder 4 is a circular tube that is closed at one end and opened at one end, in which a cushioning material such as gas, liquid, or coil spring is enclosed, and a piston (not shown) can follow the compression and expansion of the cushioning material. It is possible. The rod 3 has a rod shape and is connected to the piston and extends to the outside from an opening (not shown) provided in the cylinder 4 to transmit the force in the compression direction of the buffer material from the outside to the piston. It has the function of transmitting the force in the direction of extension of the cushioning material from the outside. The mounting part 5 has a connecting part that can rotate between a connecting part of a vehicle body and a door and a damper comprising the cylinder 4 and the rod 3, and is attached to both ends of a damper that combines the cylinder 4 and the rod 3. In the vicinity of the hinge part such as a door or cover, one end is pivotally connected to the main body side and the other end is pivotally connected to the door side. The direction of 3 is matched and the operation of the damper function by compression and distraction is enabled.
As a lock mechanism added to such a damper, first of all, it will be how the lock mechanism is fixed to the damper, but the fixing to the damper is, for example, a seat member made of resin or the like It is made up of 1. The seat member 1 that can be fixed by being fitted to the rod 3 of the damper has a cylindrical outer shape, and the core portion of the column is deleted in a cylindrical shape smaller than the diameter of the rod 3, and A part of the circumference of the inner diameter of the seat member 1 is deleted toward the outer diameter so that it is at least smaller than the diameter of the rod 3. Therefore, since it can be fitted from the side and can be fixed to the rod 3 by the elastic force even when fitted, it can be moved to the most suitable position on the rod 3 without impairing the basic function of the damper. The seat member 1 can be fixed. Moreover, it can be fixed more firmly by using an adhesive etc. together as needed.
In the present embodiment, the opening due to the removal of the seat member 1 is expanded from the inner diameter to the outer diameter to facilitate insertion into the rod 3.
However, it is not necessarily limited to this. For example, the opening width of the inner diameter and the outer diameter of the seat member 1 may be the same. In this case, the insertability into the rod 3 is slightly reduced.
[0016]
Next, among the locking mechanisms, as a locking member for stopping the force of the cylinder 4 and the rod 3 to be contracted, when the rod 3 is most extended from the cylinder 4 by being attached to the seat member 1, The rod 3 has a length that does not reach at least the cylinder 4, has sufficient strength against the force that the rod 3 tends to be shortened, and the rod 3 is extended when the rod 3 is most extended from the cylinder 4. Since the bar member urged at the time of attachment to the seat member 1 so as to contact the side end portion is used as the locking member 2, the locking member 2 slides on the side surface of the cylinder 4 during the operation of a normal damper. Although it becomes possible and does not become an obstacle to the damper operation, once it is extended to the maximum, the locking member 2 is inclined to the rod 3 side, and the side of the opening for the rod 3 of the cylinder 4 is located. Abuts the lock in opposition to the force to be Chijimaro of the rod 3 is performed.
[0017]
When releasing the lock, the door or the like is once opened to the maximum as in the case of the conventional lock mechanism, so that the force to be applied to the locking member 2 is eliminated and the cylinder 4 is positioned on the side surface. Can be canceled.
[0018]
Further, the material of the locking member 2 is not particularly limited as long as strength is obtained. For example, when molding is made of resin, if the seat member 1 is also made of the same resin, integral molding with the locking member 2 is possible. Cost can be further reduced.
[0019]
In FIG. 2, a pressure distribution member 6 as a receiving member at the end of the rod take-out side for dispersing the pressure at the contact portion between the cylinder 4 and the locking member 2 is attached to the tip of the locking member 2 in FIG. ing. The pressure distribution member 6 disperses the pressure applied to the surface of the cylinder 4 with the rod opening surface, so that the deterioration of the contact portion can be reduced and the contact area with the surface can be increased. Even when unexpected force is applied from the side, it becomes difficult to come off.
In FIG. 3, the locking member 2 of FIG. 2 and the pressing dispersion means 6 are integrated to form a locking member 7 having a shape in which a part of the circular pipe having an inner diameter larger than the outer diameter of the cylinder 4 is removed in the length direction. Is.
Creating a member in which the locking member 2 and the pressure dispersion member 6 are combined as shown in FIG. 2 requires special work. However, if the shape is like that of the locking member 7 in FIG. It can be created easily by deleting a part of the tube, and the cost can be further reduced.
[0020]
In the case of FIG. 3, since the tubular locking member 7 is rounded, the bending elasticity is less than that of a bar or flat plate, and the locking member 7 is slightly offset with respect to the seat member 1 and attached. It is considered difficult to use a method in which the locking member 7 itself is in a parallel state with the cylinder 4 due to elasticity. Therefore, as shown in FIG. 3, the pin 10 as the locking member fixing means is fixed so as to be slightly rotatable, and is urged in the offset direction by the leaf spring member 9 as the urging means. The same effect as in FIG. 1 can be obtained even with the retaining member 7 having the shape.
However, the rounded locking member 7 has an opening 20 (or a recess) at a position facing the pin 10 to receive the pin 10, and the opening 20 has an end surface on the pin 10 side of the locking member 7 seated. It is necessary to be lifted from the bottom portion 11 provided on the member 1 so as not to hit the bottom portion 11 except when the locking member 7 is inclined with at least the pin 10 as a fulcrum.
[0021]
The locking member fixing means is not limited to the pin 10 and may have another structure. For example, a protrusion is provided on the inner surface of the locking member 7 and a recess for receiving it is provided on the seat member 1 side. The same applies to the following embodiments.
[0022]
In FIG. 4, the circular tubular locking member 7 shown in FIG. 3 can be used without removing a part thereof. In the case of FIG. 4, since the tubular locking member 8 is closed, the bending elasticity is further reduced as compared with the case of FIG. 3, and the pin 10 is used to slightly rotate the circular tube as shown in FIG. The plate spring member 9 is movably fixed and biased in the offset direction.
[0023]
Similarly to FIG. 3, the annular locking member 8 has a recess or an opening (not shown) for receiving the pin 10, and the recess or opening is an end surface of the locking member 8 on the pin 10 side. Is lifted from the bottom 11 provided on the seat member 1 and does not hit the bottom 11 except when the locking member 8 is tilted with at least the pin 10 as a fulcrum.
[0024]
In the case of FIG. 4, since the locking member 8 has a closed circular tube, the damper is once removed from the door or the like to attach the locking member 8, and after passing the locking member 8 through the damper, the seat member 1 is attached to the rod 3. It is necessary to assemble the lock means by attaching, and finally return the damper to which the lock means is added to the door or the like.
[0025]
In FIG. 5, the seat member 1, the bottom portion 11, the pin 10, and the leaf spring member 9 of FIG. The leaf spring member 9, the pin 10 and the bottom 11 added to the seat member 1 can be formed by integral molding or the like if the resin has no problem in practical use.
[0026]
【The invention's effect】
According to the present invention, even when the damper manufacturer does not prepare a locking device, it is possible to add a locking means to an arbitrary damper. Even if a device for the use is prepared, it is possible to obtain a damper with a lock mechanism at a low cost simply by adding to the current damper without waiting for a period for obtaining the damper with the lock device.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of the present invention.
FIG. 2 is a diagram showing a second embodiment of the present invention.
FIG. 3 is a diagram showing a third embodiment of the present invention.
FIG. 4 is a diagram showing a fourth embodiment of the present invention.
FIG. 5 is a three-sided view showing a partial configuration of a fourth embodiment of the present invention.
FIG. 6 is a diagram showing a scene of implementation with a forklift as an example of the present invention.
FIG. 7 is a diagram showing a configuration of a conventional technique.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat member 2 Locking member 3 Rod 4 Cylinder 5 Mounting part 6 Press dispersion | distribution means 7 Locking member 8 Locking member 9 Leaf spring member 10 Pin 11 Bottom part 12 Locking member 13 Forklift 14 Engine cover 15 Hinge part 16 Damper 20 Opening Part

Claims (5)

A damper lock that is freely attachable to a damper in which a cylinder and a buffer material are sealed so that a piston and a rod are movable, and locks the rod in a position extended from the cylinder,
Side is open, the seat member securable is fitted from the side to the rod,
Attached to the seat member, the rod is urged to abut the rod extraction side end of the cylinder when it is drawn from the cylinder, Ri Do and a locking member made of a bar material,
A retrofit damper lock characterized in that a damper lock can be attached later to a damper to which a damper lock is not attached in advance .  The shape of the seat member is such that a cylindrical core portion is removed to a column shape smaller than the diameter of the rod, and a part of the circumference of the inner diameter of the remaining substantially tire-shaped seat member is at least smaller than the diameter of the rod. The rear damper lock according to claim 1, wherein the rear damper lock is removed toward the outer diameter so as to be smaller, and can be fitted from the side surface and can be fixed to the rod by an elastic force even during the fitting. . The retrofit damper lock according to claim 2 , wherein an opening formed by deleting the seat member is expanded from an inner diameter to an outer diameter. The retrofit damper lock according to claim 1 , wherein the locking member has a receiving portion of a rod take-out side end portion of a cylinder at a tip end of a bar member. The retrofit damper lock according to any one of claims 1 to 4 , wherein the seat member and the locking member are formed by integral molding of resin.

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