JPH04112154U - Actuation device for tension reducer - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain an actuation device for a tension reducer that can smoothly operate the tension reducer with a small operating force in response to opening and closing of a vehicle door even in a narrow installation space. . A guide hole 42 is formed in a case 38 of an actuating device 10, and a button 44 is housed therein. A slide hole 50 is formed at an angle in the button 44.
The wire 2 is inserted into these guide holes 42 and slide holes 50.
6 connection pin 52 is inserted. When the button 46 is pressed by the door, the pin 52 is moved upward along the guide hole 42 while being pressed by the slide hole 50, and the wire 26 is pulled. As a result, the switching lever 18 is moved and the lock gear 16 is prevented from rotating, and the tension reducer is brought into operation. In this way, the pin 52 is moved in a direction perpendicular to the direction of movement of the button 44.
To pull the wire 26 by moving the
There is no need to bend the wire 26 and place the button 44.
The moving force can be smoothly transmitted to the switching lever 18, and it can be applied even in a narrow installation space.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a tension reduction system that can change the tension of the webbing attached to the passenger. This relates to actuating devices for sensors, especially tension reducers that respond to the opening and closing of vehicle doors. The present invention relates to an actuating device for a tension reducer that is actuated by a tension reducer.

0002

[Conventional technology]

As a webbing retractor, the tension of the webbing attached to the passenger is controlled by the vehicle door. The so-called door-linked tension reducer, which can be changed according to opening and closing, is known. ing.

0003 In this type of tension reducer (webbing take-up device), the take-up shaft is energized. The large and small spiral springs for this purpose are connected in series via a lock gear. Ma In addition, a cutter with a pawl that can be engaged with the lock gear is installed near these mainspring springs. When the pawl is engaged with the lock gear, the lock gear is rotation is blocked, and only the small spring spring biases the take-up shaft.

0004 One end of a wire is connected to the switching lever. The middle part of the wire The other end is placed in a position facing the vehicle door. is connected to a button-shaped pressing member that protrudes from the pillar outer panel toward the door. There is. This pressing member is attached so that it can move in the direction of opening and closing the door. When the door is closed, it is engaged and pressed, and the door is moved in the closing direction, that is, from the pillar outer plate. Moved in the direction towards Pillar Garniture. The moving force of this pressing member is transmitted to the switching lever via the switching lever, the switching lever is moved, and the pawl is locked The structure is such that the lock gear engages with the lock gear and prevents rotation of the lock gear.

[0005] By the way, the pillar that has the wire for operating the switching lever (paul) In some areas, the distance between the pillar outer plate and the pillar garnish is narrow, so the pillar The wires arranged vertically along the line are bent at approximately right angles near the connection part with the pressing member. (bent with a small radius of curvature) and pressed with its end along the door closing direction. The pressure member is connected to the pressure member. Therefore, the wire sliding resistance at the bending part of the wire is The disadvantage was that it increased.

[0006] Therefore, due to the increased sliding resistance of this wire, smooth opening and closing movement of the door will be hindered. In addition, when the door is opened, the pressing member can be quickly moved to its original position. In order to return to the position, use a large return spring with a large biasing force. However, in this case, the smooth closing movement of the door is obstructed and the so-called door The tightness becomes worse.

[0007]

[Problem that the idea aims to solve]

This invention takes the above facts into consideration, and even in a narrow installation space, the tension redundant The sensor can be operated smoothly with a small amount of operating force in response to opening and closing of the vehicle door. The object is to obtain an actuation device for a tension reducer.

[0008]

[Means to solve the problem]

The actuation device for a tension reducer according to the present invention is a webbing winding device for a take-up shaft. By changing the take-up force by moving the switching lever, the material is pulled out from the take-up shaft. Used in a tension reducer that can change the tension of the webbing attached to the passenger. and a tension lever for moving the switching lever as the vehicle door is opened and closed. This is an actuating device for the deuser, and the button is compatible with the vehicle door and can be moved in the width direction of the vehicle. A movable member that is placed on the vehicle door and moves when it is pressed when the vehicle door is closed, and a flexible a long body having one end connected to the switching lever and moving the switching lever; provided between a movable member and the other end of the elongated body, which controls the moving force of the movable member in its moving direction; a moving direction changing means for changing the moving direction to a direction substantially perpendicular to the moving direction and transmitting the changed direction to the elongated body. It is characterized by the fact that

[0009]

[Effect] In the actuation device for the tension reducer with the above configuration, the vehicle door is closed. Then, the moving member is pressed by the vehicle door and moves inward in the door closing direction, that is, in the vehicle width direction. be moved. The moving force of this movable member is changed approximately perpendicularly by the moving direction changing means. ie, in the vertical direction of the body, and is transmitted to the elongated body. This results in , the elongated body is moved in the vertical direction, and the switching lever is moved by the vertical movement force of this elongated body. - is moved. As a result, the webbing winding force of the take-up shaft is changed, and the webbing winding force of the take-up shaft is The tension of the webbing that is pulled out from the vehicle and attached to the passenger is changed.

0010 Here, the moving force of the moving member moved inward in the vehicle width direction by the vehicle door is: Transmission is changed by the movement direction changing means in the vertical direction of the body, which is approximately perpendicular to this. Therefore, the elongated body near the connecting part with the moving member is bent (particularly when the long body is bent with a small bend). curved by the radius). Therefore, the movement resistance of the long body increases. In addition, even if the installation space is narrow along the vehicle width direction, moving parts can be easily moved. The moving force can be transmitted by connecting the elongated body and the elongated body. Therefore, the smoothness of the vehicle door Tension reducer can be used to open and close vehicle doors without hindering opening/closing movement. It can be operated smoothly with a small amount of operating force.

[0011]

【Example】

FIG. 1 shows an actuation device 10 for a tension reducer according to a first embodiment of the present invention. And a sectional view of the webbing retractor 12 to which this is applied is shown, and FIG. An exploded perspective view of the actuating device 10 is shown. FIG. 3 also shows the actuating device 10 and The overall arrangement of the webbing retractor 12 is shown.

0012 The webbing take-up device 12 includes large and small rollers (not shown) that have different biasing forces. A tension reducer consisting of a spring is attached to the side plate 14. The lock gear 16 connecting these large and small springs is rotatably supported. It is.

[0013] A switching lever 18 is arranged near the lock gear 16. Switching lever 18 is rotatably supported at one end by a support shaft 20, and has a pawl 2 approximately in the middle. 2 is rotatably attached. Paul 22 is the ratchet of lock gear 16 A screw fitted to the support shaft 20 is capable of engaging with the teeth to prevent rotation of the lock gear 16. A method in which one end of the coil spring 24 is locked and always engages with the lock gear 16. Forced in the direction. The pawl 22 of the switching lever 18 engages with the lock gear 16 or are separated to lock or free the lock gear 16, thereby The webbing winding force of the webbing winding device 12 can be changed.

[0014] One end of a wire 26 as a long body is connected to the other end of the switching lever 18. There is. The wire 26 is housed in a guide tube 28, and the wire 26 is housed in a guide tube 28. A return spring 30 is disposed between the lower end portion of the tube 28 and the lower end portion of the tube 28 . to this As a result, the wire 26 and the switching lever 18 are arranged so that the pawl 22 is separated from the lock gear 16. Normally, the lock gear 16 is in a free state.

[0015] The middle part of the wire 26 (guide tube 28) is connected to the center of the body as shown in FIG. vertically arranged along the pillar 32 (between the pillar outer plate 34 and the pillar garnish 36). After being installed, its upper end is connected to the actuating device 10.

[0016] As also shown in detail in FIG. 2, the actuating device 10 includes a case 38. Case 3 8 is formed into a substantially box shape and is fixed to the pillar outer plate 34 with a nut 40. The upper end of the guide tube 28 mentioned above is connected and fixed to the bottom wall of the case 38. The upper end of the wire 26 is located within the case 38. on both side walls of case 38 The longitudinal direction is on the same axis as the wire 26 and the guide tube 28, and the moving direction is A pair of guide holes 42 constituting a changing means are formed facing each other.

[0017] A button 44 as a moving member is movably accommodated in the case 38 . The button 44 is formed in a substantially box shape similar to the case 38, and is A cylindrical protrusion 46 is formed protruding from the end surface of the (a) side. This protrusion 46 It slidably enters into the support hole 48 of the support hole 48, and furthermore, the tip end of the support hole 48 8 protrudes outward and faces the door D. Therefore, protrusion 4 6 is engaged and pressed when the door D is closed, and is moved in the door closing direction, that is, in the direction of the pivot. The button 44 is moved in the direction from the pillar outer plate 34 to the pillar garnish 36. The configuration is as follows. On both side walls of the button 44, there is a A slide hole 50 constituting a diagonal movement direction changing means is formed, and a A pin 52 that supports the ear 26 is inserted therethrough. This causes the wire 26 to 44. Furthermore, the pin 52 after being inserted into the slide hole 50 Both ends also fit into the guide hole 42 of the case 38. i.e. slide Only a portion of the hole 50 (in other words, only the portion through which the pin 52 is inserted) overlaps the guide hole 42. This overlapping part (pin 52 insertion part) becomes longer as the button 44 moves. It changes sequentially from one end in the hand direction to the other end. In other words, the button 44 Due to the movement, the pin 52 is pressed against the peripheral wall of the slide hole 50 and moved along the guide hole 42. It is a configuration that can be moved. Note that the wire 26 is normally connected to the return spring 3. Since the guide tube 28 is urged downward by the urging force of 0, the pin 52 is located at the lower end of the guide hole 42 and slide hole 50.

[0018] A compression coil spring 56 is installed between the button 44 and the cover 54 of the case 38. The button 44 is always placed in the direction of the pillar outer plate 34 (the protrusion 46 is in the support hole 4 8).

[0019] Next, the operation of this embodiment will be explained.

[0020] In the tension reducer actuating device 10 having the above configuration, the door D is opened. In this state, the button 44 is located on the side of the pillar outer plate 34 and the protrusion 46 is located in the support hole 48. The pin 52 is located at the lower end of the slide hole 50 and the guide hole 42. (state shown in Figure 1). Therefore, the pawl 22 of the switching lever 18 is locked. The lock gear 16 is in a free state because it is separated from the gear 16, and the large mainspring spring A biasing force of is applied to the winding shaft.

[0021] Here, when the door D is closed, the protrusion 46 of the button 44 is pressed against the door D. The button 44 resists the biasing force of the compression coil spring 56 in the door closing direction, i.e. In the direction from the pillar outer plate 34 to the pillar garnish 36 (direction of arrow A in Figure 1) will be moved. When the button 44 is moved, the pin 52 is pressed into the slide hole 50. while moving upward along the guide hole 42 (in the direction of arrow B in FIG. 1), the pin 52 slides out. It reaches the upper ends of the guide hole 50 and the guide hole 42 (as shown in FIG. 4). This pin 52 Due to the movement, the wire 26 is pulled against the biasing force of the return spring 30. , the switching lever 18 is rotated around the support shaft 20 and the pawl 22 is moved to the lock gear 16. engage with. This prevents the lock gear 16 from rotating and locks the lock gear 16. is in a locked state, and only the biasing force of the small spring spring acts on the winding shaft. Therefore, the webbing retracting force of the webbing retractor 12 is changed, and the webbing is pulled out from the retracting shaft. The tension of the webbing attached to the passenger is changed.

[0022] In this case, the moving force of the button 44 pressed and moved by the door D is 52 is pressed against the slide hole 50 and moves along the guide hole 42, The wire 26 is changed in the direction along the pillar 32 perpendicular to the movement direction of the button 44. The wire 26 and the guide tube 28 are connected to the button 44 in order to There is no need to bend with a small radius of curvature in the vicinity. Therefore, the movement of the wire 26 There is no need to increase the biasing force of the return spring 30 without increasing dynamic resistance. There's no need. Therefore, the smooth opening and closing movement of door D is not hindered, The switching lever 18 is moved smoothly according to the opening/closing of the door D, and the tension is smoothly adjusted. The reducer can be activated. In addition, the pillar outer panel 34 and the pillar garni Even if the dimensions between the wire 26 and the bush 36 are small and the arrangement space is narrow, the wire 26 and Since there is no need to arrange the guide tube 28 in a curved manner, this narrow arrangement space can be avoided. Wire 26 can be easily placed within and connected to button 44 , and button 44 can transmit the moving force of

[0023] Next, a second embodiment of the present invention will be described. In addition, basically the same as the first embodiment Identical parts are given the same reference numerals as in the first embodiment and their explanations are omitted. .

[0024] FIG. 5 shows an actuation device 60 for a tension reducer according to a second embodiment of the present invention. A cross-sectional view of the actuator 60 is shown, and an exploded perspective view of the actuating device 60 is shown in FIG. Ru.

[0025] Inside the case 62 of the actuating device 60, a button 64 as a moving member is movable. It is accommodated. A rack part 66 is formed on the bottom surface of this button 64, and Furthermore, a pinion 68 is engaged with this rack portion 66. Therefore, the button The movement of pinion 64 causes pinion 68 to rotate. The pinion 68 is the case 62 It is fixed coaxially to a spindle 72 of a pulley 70 rotatably supported by the pulley. The lever 70 rotates integrally with the pinion 68. The end of the wire 26 is attached to the pulley 70. The wires 26 are connected to each other, and the wire 26 can be wound around the outer circumference of the pulley 70. There is.

[0026] Also in the actuating device 60 of this embodiment, when the door D is open, the button 6 4 is located on the side of the pillar outer plate 34 and protrudes from the support hole 63 of the case 62, The wire 26 is in the most unwound state from the pulley 70 (the state shown in FIG. 5). ). Therefore, the pawl 22 of the switching lever 18 is separated from the lock gear 16 and locked. The nail gear 16 is in a free state, and the biasing force of the large mainspring spring acts on the winding shaft. The situation is such that

[0027] Here, when the door D is closed, the button 64 is pressed against the door D and the compression coil is turned off. The pillar is moved in the door closing direction, that is, from the pillar outer plate 34 against the urging force of the pull 74. It is moved in the direction toward the garnish 36 (in the direction of arrow A in FIG. 5). Button 64 When moved, the pinion 68 meshed with the rack 66 is rotated. pinion When the pulley 68 is rotated, the pulley 70 is rotated integrally with the pulley 70, and the wire 26 is sequentially rotated. It is wound around a pulley 70. By winding the wire 26, the wire 26 becomes The switching lever 18 is pulled against the biasing force of the return spring 30, and the switching lever 18 is The pawl 22 is rotated around 0 and engages with the lock gear 16. by this , the rotation of the lock gear 16 is prevented and the lock gear 16 is in a locked state, and the small The webbing retractor 1 is in a state where only the biasing force of the spring acts on the take-up shaft. The webbing winding force of No. 2 has been changed, and the webbing winding force that is pulled out from the winding shaft and attached to the passenger has been changed. Ebbing tension is changed.

[0028] In this actuating device 60 as well, a pulley 70 that rotates together with a pinion 68 is used. By winding up the wire 26, the moving force of the button 64 is changed from the moving direction Since the transmission is changed in the direction along the orthogonal pillars 32, the wires 26 and The guide tube 28 is bent with a small radius of curvature near the connection part with the button 64. There's no need to give up. Therefore, the movement resistance of the wire 26 does not increase, and the return There is no need to increase the biasing force of the spring spring 30. Therefore, the door D Smooth opening/closing movement is not hindered, and the door D opens and closes smoothly. The tension reducer can be operated smoothly by moving the switching lever 18. Wear. In addition, since there is no need to arrange the wire 26 in a curved manner, the arrangement space is narrow. Even in this case, the moving force can be transmitted by connecting the button 64 and the wire 26.

[0029] In addition, in the first embodiment, the slide hole 50 and the moving direction changing means are used as the moving direction changing means. The pin 52 is moved by the guide hole 42, and the second embodiment is In this case, the rack part 66 and pinion 68 are used as means for changing the direction of movement of the pulley. 70 is rotated to wind the wire 26, but as a means for changing the moving direction. is not limited to these, but the movement of the buttons 44 and 64 can be changed to a substantially right angle direction and transmitted. It can be applied if it is.

[0030]

[Effect of the idea]

As explained above, the tension reducer actuating device according to the present invention has a narrow Even if the installation space is small, the tension reducer can be made smaller depending on the opening and closing of the vehicle door. It has the effect of being able to operate smoothly with a small amount of operating force.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a tension reducer actuating device and a webbing take-up device to which the same is applied according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the actuating device according to the first embodiment.

FIG. 3 is an overall configuration diagram showing the overall arrangement of an actuating device and a webbing take-up device according to the first embodiment.

FIG. 4 is a sectional view showing the operating state of the actuating device according to the first embodiment.

FIG. 5 is a cross-sectional view of a tension reducer actuating device and a webbing take-up device to which the same is applied according to a second embodiment of the present invention.

FIG. 6 is an exploded perspective view of an actuating device according to a second embodiment.

FIG. 7 is a sectional view showing the operating state of the actuating device according to the second embodiment.

[Explanation of symbols]

10 Actuation device 16 Lock gear 18 Switching lever 22 Paul 26 Wire (long body) 30 Return spring 32 Pillar 38 cases 42 Guide hole (movement direction changing means) 44 Button (moving member) 50 Slide hole (movement direction changing means) 52 Pin (movement direction changing means) 60 Actuation device 62 cases 64 Button (moving member) 66 Rack part (movement direction changing means) 68 Pinion (moving direction changing means) 70 Pulley (movement direction changing means)

Claims (1)

[Scope of utility model registration request] Claim 1: Used in a tension reducer that can change the tension of the webbing pulled out from the take-up shaft and attached to the passenger by changing the webbing take-up force of the take-up shaft by moving a switching lever. , an actuating device for a tension reducer for moving the switching lever in accordance with opening and closing of a vehicle door, the actuating device being arranged on a body so as to be movable in the width direction of the vehicle in correspondence with the vehicle door, when the vehicle door is closed; a moving member that moves when pressed by the user; a flexible elongated body that has one end connected to the switching lever and moves the switching lever; and a flexible elongated body that is provided between the moving member and the other end of the elongated body. An actuating device for a tension reducer, comprising a moving direction changing means for changing the moving force of the moving member in a direction substantially perpendicular to the moving direction of the moving member and transmitting the same to the elongated body.