JPH051491Y2 - - Google Patents

Description

[Detailed explanation of the invention] (1) Industrial application field This invention is designed to stop the window glass door at any position by a balancing effect that works to reduce the weight when opening and closing the window glass door of a railway vehicle. This invention relates to a actively operated balancer for a unit that uses

(2) Prior Art Figure 5 shows the state in which two balancers B1 and B2, which are the same device installed on the vehicle body side, are used as a set. As shown in FIG.
9 and fix the outer end to the outer peripheral part 26 of the spring case.
The spring case 21 is formed so that the spring force is used as a repulsive force by being fixed to the spring case 21 and held at both ends.
A wire is wound around one side of the cone pulley 20, which is rotatably connected to the core shaft 19, and a feed pawl 23 elastically supported on the outer wall of the U-shaped side frame 18 on the other side.
The wire 10 wound around the cone pulley 20 is pivotally supported between the side frames 18. The window glass door 2 is suspended and moved up and down via a pulley 25. This is a spiral spring that is essentially wound and curved in a narrow limited space, and when the spring plate is rapidly rotated, the spring plate is rapidly coiled and constricted, causing noise and scratches on the metal plate due to friction. Also, if the load fluctuation is large due to initial sag in the winding or gradual decrease in the winding diameter, the set elasticity of the spring will vary. There is a discrepancy in the balance action due to the vertical movement of the glass door. That is, as shown in FIG. 8, each winding ring (one turn of the vortex) contacts unevenly when the tension is released, making it difficult to move smoothly. In addition, wires tend to jump from the cone-wound pulley and breakage occurs due to increased spring fatigue, so improvements in durability and vehicle maintenance have been desired.

(3) Problems that the invention aims to solve This invention is proposed as a means to compensate for the above-mentioned shortcomings, and its gist is to improve When the spring force follows through the cone pulley in response to the vertical movement (opening/closing) of the window, the coil spring is pulled in accordance with the hanging position of the window glass door, and the load stress is equally distributed over the entire spring. It is an object of the present invention to provide a balancer consisting of a single structure that can obtain stable spring force and balance action so that equal pressure can be measured.

In other words, in a winding braking mechanism such as a spiral spring, as the winding diameter gradually decreases, there are overloads and slips on the friction surface due to an increase in wire tension, and variations in winding and unwinding due to timing. If the initial tension of the spring is biased by a ratchet mechanism, accurate intermittent rotational feed cannot be expected, resulting in large load fluctuations and uneven tension distribution, which shortens the spring life. .

This device uses a large-diameter cylindrical coil spring as the coil spring that biases the wire-wound cone pulley to rotate.The coil spring is formed by selecting a large-diameter cylindrical coil spring to resist external force and momentarily generate a moment due to the spring force. The cone pulley rotates in synchronization with the elasticity of the cone pulley, and the sliding contact force can be adjusted according to load fluctuations.In addition, the friction caused by the contact between the coil springs is reduced, and noise caused by spring rotation and vibration is prevented. The object of the present invention is to provide a highly durable and simple structure that allows windows and glass doors to be raised and lowered smoothly with considerable manual effort.

(4) Means for solving the problem This invention has a balancer attached to the upper part of the window frame so that the window glass door can be opened and closed up and down and stopped at any position. Large-diameter bases 5a and 5b of cone pulleys 5 and 5 are rotatably attached to the outer ends of a support shaft 4 fixed to the frame 1 and installed horizontally, and a pair of worm wheels are installed in the middle thereof. This worm wheel and the above-mentioned cone pulley 5, 5 are arranged side by side at intervals.
Adjustment plates 7, 7 are symmetrically pivoted and rotatably connected adjacent to the worm wheel between the cone pulley and the adjustment plate, and a large diameter coil spring is installed between the cone pulley and the adjustment plate. An adjustment screw is installed in the axial direction of the worm which engages with the worm wheel in a perpendicular manner, and rotation of the adjustment screw applies an initial tension to the coil spring. The invention is characterized by the fact that the window glass door is suspended from the two cone pulleys connected to each other via a winding wire, and the window glass door is moved up and down by manual pressure.

(5) Operation The operation of the balancer A of this invention will be explained based on FIGS. Regarding the balancer device, when the worm 11 is rotated, it is possible to apply a tensile force to the coil spring 8 in conjunction with this worm, and the balancer A moves in the reciprocating opening/closing direction between the top and bottom of the window glass door to move the window up and down. balance. That is, the coil spring 8 fixed to the adjustment plate 7 and the cone pulley 5 is preloaded with spring force as the worm wheel 6, which is integrally constructed with the adjustment plate 7, rotates.
Since the strength of the spring repulsive force is obtained in proportion to the number of turns of the coil spring 8, the adjustment screw 12, which rotates the worm for transmitting the spring force by the worm wheel 6, can be rotated around the spindle to obtain the necessary amount of force. The spring force can be finely adjusted according to the installation condition of the balancer system.

In other words, if the lock (not shown) is released from the fully closed state (U line indicating the upper limit) of the window glass door 2 in FIG. The door 2 is lowered by a wire 10a shown by a two-dot chain line wound around a cone pulley, which resists the weight of the window glass door by sliding with the cone pulley, and its downward movement is slowed down. In other words, the rotational speed of the cone pulley suspending the wire 10a can be controlled by constantly applying a rotational moment to the cone pulley by the coil spring force and controlling the winding tension (sliding force). It will be done. Therefore,
While unwinding the wire 10a from the cone pulley, the wire tension corresponds to the torque fluctuation of the cone pulley 5, a moment is obtained due to the spring force, and the overload caused by movement is adjusted to ensure smooth lowering of the window glass. This prevents the cone pulley from rotating and falling naturally due to its own weight, and it descends in response to the pushing force, and stops immediately when stopped.

In other words, the coil spring force controls and balances the sliding force of the wire wound around the cone (frictional force between the groove and the wire).

Also, No. 10 shows the partially open state of the window glass door 2.
Regarding the figure, the wire 10a is connected to the cone pulley 5.
As the wire 10b rotates, it slides on the concave groove of the oblique body and moves to the mid-open M line position, the tension of the wire 10b gradually increases due to the weight of the window glass door and becomes overloaded, but the elasticity of the coil spring It moves downward smoothly due to the target bias and the sliding force of the cone pulley. In this state, as the wire continues to move downward and the winding diameter of the wire gradually decreases, the wire tension gradually increases, but during this time, the tension of the wire 10 is applied to the cone pulley until the lower limit D line is fully opened as shown in Fig. 1. The starting torque of the series of coil springs is transmitted to the cone pulley. These effects are achieved by adjusting the sliding contact force between the wire and the cone pulley body by adjusting the worm wheel and the number of coil spring windings by the worm using an adjustment screw 12 provided on the worm when the balancer is installed on the vehicle. Of course, this has been accomplished.

Conversely, in order to move the window glass door upward from the fully open state (D line) and return to the fully open state (U line), the cone is moved using the biasing rotational force of the coil spring force, completely opposite to the above operation. Wire 10, 10b, 1
Since the tension state of 0a is constantly maintained in a tension state without slack, the wire is rotated in the direction of winding it.

In other words, a moment is obtained by the spring force to match the fluctuation of the rotational moment of the cone pulley, which dampens the sliding force of the wire wound around the cone pulley, and is synergistic with the elastic restoring force of the coil spring to return to its contracted state. This acts in the direction of promoting upward movement, stopping the window glass door at an arbitrary position and returning it to the fully open state. In this way, the apparent weight of the window glass door can be reduced through vertical movement, and it can be moved up and down freely.

Note that the coil springs 8, 8, which are independently arranged side by side on the left and right sides on the support shaft 4, are activated by the cone pulleys 5, 5 as described above when an overload occurs due to the opening/closing operation of the window glass door 2.
The coil springs 8, 8 are used in order to avoid hammering noise caused by contact with the spindle due to torque transmission or vibration in a direction substantially perpendicular to the spindle due to inherent spring vibration, and torsion caused by mutual contact between the coils. The outer cylinders 15, 15 are arranged concentrically with the outer peripheral surface of the spindle with an appropriate gap 16 between the adjustment plates 7, 7 fixed at both ends and the free ends fixedly protruding from the cone pulleys 5, 5. Since the coil springs 8, 8 are fitted in each other, the swinging motion of the coil springs 8, 8 is appropriately damped, thereby preventing damage to each other and the support shaft 4, and significantly reducing noise.

In short, this idea has a structure in which a large-diameter, long coil spring that balances the weight of the window glass door is pulled in the axial direction of the spring, and a uniform balance force is distributed evenly across the spring regardless of the vertical position of the window glass door. This allows a stable spring force to be exerted, and a light manual operation along with the spring proof force, and the position and posture to be maintained well at each point in time when the operation is stopped.

(6) Embodiment The configuration of this invention will be explained with reference to a drawing showing an embodiment.

In FIGS. 1 and 2, 2 is a window glass door that moves up and down to open and close, and is manually suspended by wires 10, 10 by means of a handle 2a. wire 1
0 and 10 are fixed to the frame 1 through pulleys 17 and 17, whose one end is locked to the side of the window glass door 2 and the other end is pivotally supported on both sides of the frame 1 of the balancer A above the window frame 3. A spiral concave groove is formed in the diagonal body of the cone pulleys 5, 5, which are rotatably mounted on both ends of the horizontally installed support shaft 4 with the large diameter bases 5b, 5a of the cone pulley facing each other. They are wound around each other and fastened to each other (not shown).

A is a balancer mechanism which is a transmission means for opening and closing the vehicle window glass door 2 and has the following configuration. That is, the above-mentioned cone pulley 5, which is usually used as a conductive member,
Worm wheels 6, 6 5 are attached to both ends of the support shaft 4 via metal members 5c, 5c, are coaxially spaced apart from each other in the middle of the support shaft 4, and are pivotally attached to the support shaft 4. Place this worm on the opposite side of the
Adjustment plates 7, 7 that rotate integrally with the wheels are pivoted adjacent to each other, and worms 11, 1 mesh orthogonally with the worm wheels 6, 6.
The worms 11, 11 are rotated by the rotation of the adjusting screws 12, 12, and the adjusting screws 12, 12 are attached to the support shaft 4 through the brackets 14, 14. The above-mentioned worm wheels 6, 6 mounted above are rotated to rotate the adjustment plates 7, 7 toward the spindle direction, and at the same time, the winding conductive force of the coil springs 8, 8, which will be described later, is added or reduced. It is designed so that the output can be adjusted.

That is, the coil springs 8, 8 have both ends connected to spring stops 9, 9, . . . between the cone pulley and the adjustment plates 7, 7.
It is wound around the support shaft 4 by... In this case, the coil springs 8, 8 are attached to the cone pulleys 5, 5 and the adjustment plates 7, 7 by each protrusion fixedly provided in the direction of the support shafts of the cone pulley 5, 5 and the adjustment plates 7, 7. The outer cylinder 1 is provided with free ends 5a, 7a, and the edges of the outer cylinders 15, 15 are fitted concentrically or tightly with an appropriate gap 16 on the free ends.
5 and 15. This reduces wear and tear caused by contact with the batter or wire due to contact with the support shaft 4 based on the rotational amplitude of the attached coil spring, and also allows smooth expansion and contraction of the coil springs 8, 8, so that the outer cylinder 15, For 15, it is desirable to use a molding material made of elastic synthetic resin. In addition,
Derailment prevention metal fittings f and f are attached in appropriate numbers to the frame 1 directly above the diagonal bodies of the wire-wrapping cone pulleys 5, 5 attached to both ends of the support shaft 4, in preparation for unexpected detachment of the wire. As mentioned above, this invention is designed to constantly apply the spring force in the wire winding direction through the cone pulleys 5, 5 in the axial direction of the coil springs 8, 8 to keep the wire in a constant state of tension. In addition, in order to obtain accurate winding of the spring, adjustment screws 12, 12 interlocked with the worm gear are provided so that the initial tension is quickly applied to the coil springs 8, 8, and the spring expands and contracts. As a result, the suspension wires 10, 10 are configured to maintain a balanced state by the force of sliding contact with the coil pulleys 5, 5.

In addition, as an application example, the wire can be used as a chain, a belt, etc., and the cone pulley can also be used as a sprocket wheel with its spindle extended to a long length, so that it can be used depending on the width or narrowness of the window glass door. It can also be used as a window opening/closing device for buildings, etc. other than vehicle windows.

(7) Effects of the invention According to the window glass door opening/closing balancer of this invention,
To maintain balance with the window glass door, a worm wheel was installed on the same axis to mesh with a worm equipped with a pair of cone pulleys, a coil spring, and an adjustment screw that can apply initial tension to the coil spring. Consisting of a single, simple assembly device, the spring expansion and contraction can be freely received and the pressure equally distributed and transmitted to the coil spring regardless of the vertical position during the reciprocal opening and closing process of the window glass door. . In addition, the vibration of the spring during rotation provides a buffering effect against the supporting shaft, so the spring force is perfectly stable and can be used for a long time in places subject to vibrations and shocks. Therefore, when applying this to trapdoors such as railway vehicles,
Compared to conventional mainspring springs, spring breakage accidents can be prevented, and the design components and dimensions of the window part can be made into a unit with almost no changes compared to conventional ones, and can be detachably attached to the vehicle body, so it can be easily maintained. It is easy to inspect, can be used efficiently over a wide range of vehicles, and has extremely great practical effects.

[Brief explanation of drawings]

Figures 1 to 4 and Figures 9 to 11 show examples of this invention. Figure 1 is a partially cutaway slope view of the balancer, and Figure 2 is a schematic front view showing the entire balancer. , FIG. 3 is a partially cutaway cross-sectional plan view taken along the Y-Y line in FIG. The figure is a schematic explanatory diagram of the operation of the balancer device in fully closed, partially opened, and fully opened states. Figures 5 to 8 show the conventional system, with Figure 5 being a schematic diagram of installing a balancer built into a vehicle, Figure 6 being a plan view of the balancer, Figure 7 being a side view of Figure 6, and Figure 7 being a side view of Figure 6. FIG. 8 is a diagram illustrating the winding of a spiral spring built into a conventional balancer. DESCRIPTION OF SYMBOLS 1... Frame, 2... Window glass door, 4... Support shaft, 5... Cone pulley, 5a, 7a... Free end of protrusion, 5b... Large diameter base, 6... Worm wheel, 7 ...Adjustment plate, 8...Coil spring, 10...
Wire, 11...Worm, 12...Adjustment screw, 14...Bracket, 15...Outer cylinder.

Claims (1)

[Claims for Utility Model Registration] 1. Large diameter bases of cone pulleys are rotatably attached to opposite ends of a support shaft fixed to a frame and installed horizontally, and a pair of worm wheels are spaced between them. Adjustment plates are symmetrically mounted between the worm wheel and the cone pulley adjacent to the worm wheel so as to be integrally rotatably connected to the worm wheel and the cone pulley. Both ends of a large-diameter coil spring are fixed and interposed between the worm wheel and the adjustment plate, and an adjustment screw is installed in the axial direction of the worm that meshes with the worm wheel at right angles. The coil screws are connected to each other so as to apply an initial tension, and the window glass door is suspended via a wire wound around both of the cone pulleys, and the window glass door is moved up and down by manual pressure. A balancer configuration for a vehicle window glass door characterized by the following. 2. Protrusions 5a and 7a are fixedly provided on each cone pulley and adjustment plate that are integrally connected on the support shaft, and an outer cylinder is connected to the support shaft concentrically between the free ends of the projections. The balancer structure for a vehicle window glass door according to claim 1 of the above-mentioned utility model registration, characterized in that the structure is such that the coil spring is mounted on the peripheral surface and a coil spring is interposed on the outer cylinder.