JP2011012459A - Safety bar adjusting mechanism for industrial vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety bar adjusting mechanism which facilitates mounting work of a safety bar.SOLUTION: This safety bar 10 includes a terminal 11 being extended in the forward and backward directions of a vehicle, and a support 12 arranged on a front end side of the terminal 11 and being extended in the direction of width of the vehicle. A rear end side of the terminal 11 is fitted into a cylindrical fitting member 3 provided on a side of a seat, and is provided to turn freely around an axial line X in the forward and backward directions of the vehicle together with the fitting member 3 and move in the forward and backward directions of the vehicle for the fitting member 3 while it is fitted into the fitting member 3. The fitting member 3 has a through-hole 3a extended like long hole in the forward and backward directions of the vehicle, and a rear end side of the terminal 11 has a through-hole 11b extended in the direction crossing the axial line X in the forward and backward directions of the vehicle orthogonally. A bolt 4 for fixing the rear end side of the terminal 11 and the fitting member 3 in the forward and backward directions of the vehicle and connecting them to turn around the axial line X in the forward and backward directions of the vehicle is inserted into each through-hole, and a nut 40 is screw-fitted to a threaded section of the bolt 4.

Description

  The present invention relates to a safety bar structure of an industrial vehicle such as a skid steer loader, and more particularly to an improvement of a structure for adjusting a safety bar to an optimum position.

  For example, in an industrial vehicle such as a skid steer loader, the driver is supported from the front in order to prevent the driver sitting on the seat from being thrown forward when the vehicle is moved forward or in the event of a vehicle collision. A safety bar (seat bar) is provided.

  Generally, as shown in Japanese Utility Model Laid-Open No. 3-123750, the safety bar is disposed in front of the driver seated on the seat and mounted on the driver (see FIGS. 4 and 6 of the same publication). ) And a retreat position (see FIG. 1) that allows the driver to get off by being retreated above or to the side of the driver.

  However, the conventional safety bar is in a fixed position with respect to a vehicle control device (joystick, lever, etc.) provided in front of the seat. For this reason, depending on the physique and body shape of the driver, even if the driver adjusts the front / rear position of the seat with the seat lever, the gap between the driver and the safety bar becomes too wide to support the driver sufficiently. In some cases, the gap was too narrow and the safety bar might give the driver a feeling of pressure.

  The present invention has been made in view of such a conventional situation, and a problem to be solved by the present invention is to provide a safety bar adjustment mechanism for an industrial vehicle that can improve the mounting property of the safety bar. .

  The invention of claim 1 is a safety bar adjusting mechanism for adjusting the position of a safety bar that supports a driver from the front in an industrial vehicle. The safety bar includes a base end portion that extends in the vehicle front-rear direction and a support portion that is disposed on the front end side of the base end portion and extends in the vehicle width direction. The base end portion is provided so as to be rotatable around an axis line in the vehicle front-rear direction and is slidable in the vehicle front-rear direction.

  According to the first aspect of the present invention, the safety bar is attached to the driver by rotating the base end portion around the vehicle longitudinal axis and disposing the support portion in front of the driver. At this time, by sliding the base end portion in the vehicle front-rear direction, the support portion similarly moves in the vehicle front-rear direction. As a result, the gap between the support portion and the driver can be adjusted and the support portion can be arranged at an optimal position, so that the safety bar can be mounted more easily.

  In the invention of claim 2, in claim 1, the rear end side portion of the base end portion is fitted to the fitting member provided on the side of the seat and is provided rotatably with the fitting member. It is provided to be movable in the vehicle front-rear direction with respect to the fitting member in a state fitted to the fitting member.

  In this case, when the base end portion is rotated, the fitting member fitted to the rear end side portion of the base end portion is similarly rotated. Further, when the base end portion is slid in the vehicle front-rear direction, the rear end side portion extends or retracts with respect to the fitting member in a state where the rear end side portion of the base end portion is fitted to the fitting member. Thus, the support portion moves in the vehicle front-rear direction.

  According to a third aspect of the present invention, in the second aspect, the rear end side portion and the fitting member are inserted into the rear end side portion and the fitting member of the base end portion in a direction perpendicular to the axis in the vehicle front-rear direction. There is provided a connecting member that fixes the end side portion and the fitting member in the vehicle front-rear direction and is connected to be rotatable about an axis in the vehicle front-rear direction.

  In this case, when the base end portion is rotated, the rear end side portion of the base end portion and the fitting member are rotated via the connecting member. Further, after the base end portion is slid in the vehicle front-rear direction and the support portion is disposed at a desired position in the vehicle front-rear direction, the rear end side portion of the base end portion and the fitting member are fixed in the vehicle front-rear direction by the connecting member. Is done. This prevents the forward movement of the base end when the driver is about to throw it forward when the vehicle is tilted forward, etc., so that the driver is reliably supported by the support portion of the safety bar. Can do.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the rear end portion of the base end portion or the fitting member includes a member disposed on the outer peripheral side and extends in a long hole shape in the vehicle front-rear direction and the vehicle front-rear direction A through hole penetrating in a direction perpendicular to the axis line of the vehicle is formed, and a through hole penetrating in a direction perpendicular to the axis line in the vehicle front-rear direction is formed in the member disposed on the inner peripheral side. A bolt as a connecting member is inserted, and a nut is screwed into a screw portion of the bolt.

  According to the invention of claim 4, by tightening the nut, the rear end side portion and the fitting member of the base end portion are fixed in the vehicle front-rear direction, and by loosening the nut, the rear end side portion of the base end portion is It becomes possible to move in the vehicle longitudinal direction with respect to the fitting member. Therefore, after the nut is loosened, the rear end side portion of the base end portion is extended or retracted with respect to the fitting member, and then the nut is tightened again to complete the position adjustment of the support portion. When the base end portion is moved in the vehicle front-rear direction, the bolt moves in the vehicle front-rear direction along the elongated hole.

  In this case, by tightening or loosening the nut, the base end portion is fixed or movable in the vehicle front-rear direction, so that the position adjustment of the support portion can be easily performed.

  According to a fifth aspect of the present invention, in the second aspect, one of the rear end side portion and the fitting member of the base end portion extends in a long hole shape in the vehicle longitudinal direction and is orthogonal to the axis in the vehicle longitudinal direction. A through hole penetrating in a direction perpendicular to the axis of the vehicle longitudinal direction is formed in the other member. Pins are inserted into these through holes, A retaining member is attached to the distal end of the base member, and a fixing member for fixing the rear end side portion of the base end portion and the fitting member in the vehicle front-rear direction is provided.

  According to the invention of claim 5, by inserting the pin into the through hole and mounting the retaining member at the tip, the rear end side portion of the base end portion and the fitting member rotate around the vehicle longitudinal axis. By being connected movably and using a fixing member, the rear end side portion of the base end portion and the fitting member are fixed in the vehicle front-rear direction. On the other hand, the base end can be moved in the vehicle front-rear direction by removing the retaining member and pulling the pin out of the through hole. From this state, after extending or retracting the rear end portion of the base end portion with respect to the fitting member, the pin is again inserted into the through hole, and the retaining member is attached to the tip, and the fixing member is used. Thus, the position adjustment of the support portion is completed.

  In this case, the base end portion can be moved or fixed in the vehicle front-rear direction by inserting / removing the pin with respect to the through hole, so that the position adjustment of the support portion can be easily performed.

  According to a sixth aspect of the present invention, in the third aspect, among the rear end side portion of the base end portion or the fitting member, the member disposed on the outer peripheral side penetrates in a direction perpendicular to the axis in the vehicle front-rear direction. A plurality of through holes penetrating in a direction orthogonal to the vehicle longitudinal axis are formed in the member formed on the inner peripheral side, and a pin as a connecting member is formed in these through holes. Is inserted, and a retaining member is attached to the tip of the pin.

  According to the sixth aspect of the present invention, the rear end portion of the base end portion and the fitting member are fixed in the vehicle front-rear direction by inserting the pin into the through hole and mounting the retaining member at the tip thereof. On the other hand, the base end can be moved in the vehicle front-rear direction by removing the retaining member and pulling the pin out of the through hole. From this state, after extending or retracting the rear end portion of the base end portion with respect to the fitting member, the pin is again inserted into the through hole, and the retaining member is attached to the tip of the pin. Position adjustment is completed.

  In this case, the base end portion can be moved or fixed in the vehicle front-rear direction by inserting / removing the pin with respect to the through hole, so that the position adjustment of the support portion can be easily performed.

  According to a seventh aspect of the present invention, in the second aspect, among the rear end side portion of the base end portion or the fitting member, the member disposed on the outer peripheral side is provided with a handle with a latch and disposed on the inner peripheral side. The member is formed with a plurality of recesses for releasably engaging the latch of the handle with latch and fixing the rear end portion in the vehicle front-rear direction when the latch is engaged.

  According to the seventh aspect of the present invention, the rear end side portion of the base end portion and the fitting member are fixed in the vehicle front-rear direction by operating the handle with latch and engaging the latch with the recess. On the other hand, by operating the handle with latch to release the latch from the recess, the rear end side portion of the base end portion can move in the vehicle front-rear direction with respect to the fitting member. From this state, the rear end portion is extended or retracted with respect to the fitting member, and then the latch of the handle with latch is engaged with another recess, thereby completing the position adjustment of the support portion.

  In this case, by operating the handle with a latch, the end portion can be moved or fixed in the vehicle front-rear direction, so that the position adjustment of the support portion can be easily performed.

  In the invention of claim 8, in claim 1, the safety bar is composed of a pair of safety bars respectively provided on the left and right sides of the seat, and each safety bar has a base end portion and a support portion. Yes.

  According to a ninth aspect of the present invention, in the first aspect, the safety bar includes a pair of base end portions disposed on both left and right sides of the seat, and a support portion that connects the front end side portions of the base end portions to each other. It is an integrated substantially U-shaped member.

  As described above, according to the present invention, the safety bar includes the base end portion extending in the vehicle front-rear direction and the support portion disposed on the front end side of the base end portion and extending in the vehicle width direction. Since the portion is provided so as to be rotatable around the vehicle longitudinal axis and slidable in the vehicle longitudinal direction, the base end portion is slid in the vehicle longitudinal direction when the support portion is attached to the driver. Thus, the support portion can be moved in the vehicle front-rear direction, so that the gap between the support portion and the driver can be adjusted, and the support portion can be arranged at an optimum position for the driver. Wearability can be improved.

It is a front view of the driver's seat part of the skid steer loader by which the safety bar adjustment mechanism by this invention was employ | adopted. It is a top view in the mounting state of the safety bar of FIG. It is the II-II sectional view taken on the line of FIG. In the safety bar adjusting mechanism according to the first embodiment of the present invention, it is a schematic longitudinal sectional view cut along a horizontal plane including an axis in the longitudinal direction of the vehicle, and corresponds to a cross section taken along line III-III in FIG. 3A. FIG. 4 is a partial side view of the safety bar adjustment mechanism (FIG. 3). In the safety bar adjustment mechanism by the 2nd example of the present invention, it is a longitudinal section schematic diagram cut by the horizontal plane containing the axis line of the vehicles longitudinal direction. In the safety bar adjustment mechanism by the 3rd Example of the present invention, it is the longitudinal section schematic diagram cut | disconnected by the horizontal surface containing the axis line of a vehicle front-back direction.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIG. 1, a skid steer loader employing a safety bar adjusting mechanism according to the present invention includes a seat S on which a driver is seated, and a safety bar (seat for supporting the driver seated on the seat S from the front). Bar) 1 and an operation lever L provided in front of the seat S. Here, a case where the safety bar 1 includes a pair of safety bars 10 and 20 provided on the left and right sides of the seat S will be described as an example.

  The safety bars 10 and 20 are rotatably supported by base units B disposed on the left and right sides of the seat S, respectively, whereby the safety bars 10 and 20 are disposed in front of the seat S, A mounting position that is worn by the wearer, that is, a driving position (solid line position in FIG. 1) and a retreating position that allows the driver to move up and down to the driver's seat by being retracted above the seat S (the one-dot chain line position in the figure). To get.

  As shown in FIG. 2, the safety bar 10 is disposed on the front end side of the base end portion 11 extending in the vehicle front-rear direction (see the arrow in the figure) and in the vehicle width direction (see the arrow in the figure). And a support portion 12 extending in the direction. The base end portion 11 is rotatable around its axis X. Here, the base end portion 11 and the support portion 12 are connected by a connecting portion 13 extending obliquely forward. Since the safety bar 20 has the same configuration as the safety bar 10, only the safety bar 10 will be described here.

  A lock plate 14 is attached to the proximal end portion 11 of the safety bar 10 so as to project outward in the radial direction. As shown in FIG. 2A, the outer peripheral surface of the lock plate 14 connects between the arcuate surface 14a having a central angle of about 270 degrees centered on the center O of the base end portion 11 and the arcuate surface 14a, and It is comprised from the orthogonal flat surfaces 14b and 14c. These flat surfaces 14b and 14c prevent the safety bar 10 from further rotating when the safety bar 10 is disposed at the mounting position (solid line position in FIG. 1) or at the retracted position (single dot chain line position in FIG. 1). The flat surfaces 14b and 14c can be brought into contact with a vehicle-side wall surface (not shown).

  An adjustment mechanism for the safety bar 10 is provided at the base end portion 11 of the safety bar 10. Hereinafter, first to third embodiments of the adjusting mechanism will be described with reference to FIGS. 3 to 5.

<First embodiment>
As shown in FIG. 3, the adjusting mechanism according to the first embodiment includes a cylindrical fitting member 3 that fits on the outer periphery of the rear end side portion of the base end portion 11. The fitting member 3 is provided on the side of the seat S and is fixed in the vehicle front-rear direction. The fitting member 3 is formed with a pair of elongated holes 3a extending in the axial direction. Each through-hole 3a is arrange | positioned on the circumference of the fitting member 3 at 180 degree | times positional relationship.

  On the other hand, a through hole 11b is formed in the rear end portion of the base end portion 11 so as to penetrate the rear end portion in the radial direction. Bolts 4 are inserted into the through holes 3a and 11b, and nuts 40 are screwed into threaded portions of the bolts 4 respectively. The head of the bolt 4 (and the nut 40) is larger than the width of the through hole 3a as shown in FIG. 3A. For this reason, the bolt 4 is fixed to the fitting member 3 by tightening the nut 40, whereby the rear end side portion of the base end portion 11 and the fitting member 3 are fixed in the vehicle front-rear direction via the bolt 4. It has become so. Further, the fitting member 3 is rotatable about the axis X in the vehicle front-rear direction along with the rear end side portion of the base end portion 11 via the bolt 4.

  On the outer periphery of the rear end side portion of the base end portion 11, a male screw portion 11a is formed. A nut member 5 is provided on the outer periphery of the rear end side portion of the base end portion 11. The female screw portion 5 a of the nut member 5 is screwed into the male screw portion 11 a of the rear end side portion of the base end portion 11. A hole 50 having a side wall surface 50 a is formed in the nut member 5. On the other hand, a flange 30 projecting outward in the radial direction is formed at the front end edge of the fitting member 3, and the flange 30 is engaged with the side wall surface 50 a of the hole 50 inside the nut member 5.

In the first embodiment, the driver gets into the vehicle from the state where the safety bars 10 and 20 are disposed at the retracted position above the seat S (the one-dot chain line position in FIG. 1). Then, after wearing the seat belt S _B sits on the seat S, the driver moves the respective safety bar 10, 20 to the mounting position of the front of the seat S (Fig solid line position). At this time, the safety bars 10 and 20 rotate around the axis X of the base end portion 11.

  Next, the driver adjusts the positions of the safety bars 10 and 20. In this case, the driver first loosens the nut 40 and, from this state, turns the nut member 5 to the tightening side or the loosening side.

  For example, when the safety bars 10 and 20 are desired to approach the driver, the nut member 5 is turned to the tightening side. At this time, since the hole side wall surface 50a is engaged with the flange 30 at the front end of the fitting member 3 and the movement of the nut member 5 in the direction of the arrow a is restricted, the base end portion 11 into which the nut member 5 is screwed. The rear end side portion moves in the direction of the arrow b, and the rear end side portion contracts into the fitting member 3. At this time, the bolt 4 and the nut 40 attached to the rear end portion of the base end portion 11 similarly move in the arrow b direction along the elongated through hole 3a of the fitting member 3. Thereby, the support part 12 of each safety bar 10 and 20 moves to the side approaching a driver (namely, vehicle rear side), and the clearance gap between a driver and each safety bar 10 and 20 can be narrowed. In addition, after the support part 12 moves to a desired position, a driver | operator tightens the nut 40 and fixes the fitting member 3 to the rear-end side part of the base end part 11. FIG.

  On the contrary, when it is desired to separate the safety bars 10 and 20 from the driver, the nut member 5 with the hole side wall surface 50a of the nut member 5 engaged with the flange 30 at the front end of the fitting member 3 is used. Turn to the side to loosen. Then, the rear end side portion of the base end portion 11 into which the nut member 5 is screwed moves in the direction of the arrow a, and the rear end side portion extends with respect to the fitting member 3. At this time, the bolt 4 and the nut 40 attached to the rear end portion of the base end portion 11 similarly move in the direction of the arrow a along the elongated through hole 3a of the fitting member 3. Thereby, the support part 12 of each safety bar 10 and 20 moves to the side away from a driver (namely, vehicle front side), and the clearance gap between a driver and each safety bar 10 and 20 can be expanded. In addition, after the support part 12 moves to a desired position, a driver | operator tightens the nut 40 and fixes the fitting member 3 to the rear-end side part of the base end part 11. FIG.

  In this manner, the gap between the support portion 12 of the safety bars 10 and 20 and the driver can be adjusted, and the support portion can be arranged at an optimal position according to the physique and body shape of the driver. 10 and 20 can be improved. As a result, the driver can be reliably supported by the support portions 12 of the safety bars 10 and 20 when the driver is about to be thrown forward when the vehicle is moved forward.

  In this case, by tightening or loosening the nut 4, the base end portion 11 is fixed or movable in the vehicle front-rear direction, so that the position adjustment of the support portion 12 of the safety bars 10, 20 can be easily performed. Can do.

  In the first embodiment, the nut member 5 can be omitted, but a double nut structure in which the nut member 5 is further arranged on the right side of the nut member 5 in the drawing is more preferable.

<Second embodiment>
As shown in FIG. 4, the adjustment mechanism according to the second embodiment has a cylindrical fitting member 3 ′ fitted on the outer periphery of the rear end side portion of the base end portion 11. The fitting member 3 ′ is provided on the side of the seat S and is fixed in the vehicle front-rear direction. A pair of through holes 3′a are formed in the fitting member 3 ′. Each through hole 3 ′ a is arranged in a positional relationship of 180 degrees on the circumference of the fitting member 3.

  On the other hand, in the rear end side portion of the base end portion 11, a plurality of through holes 11 c penetrating the rear end side portion in the radial direction are arranged in parallel in the axis X direction of the base end portion 11. A pin 6 is inserted into each of the through holes 3 ′ a and 11 c, and for example, a split pin 60 as a retaining member is attached to the tip of the pin 6. The rear end side portion of the base end portion 11 is connected to the fitting member 3 ′ via the pin 6, whereby the rear end side portion of the base end portion 11 and the fitting member 3 ′ are fixed in the vehicle front-rear direction. In addition, the fitting member 3 ′ is rotatable about the axis line X in the vehicle front-rear direction together with the rear end side portion of the base end portion 11.

  Also in the second embodiment, as in the first embodiment, after the driver gets into the vehicle, the safety bars 10 and 20 are moved to the front mounting position of the seat S (solid line position in FIG. 1). The position of each safety bar 10, 20 is adjusted.

  For example, when it is desired to bring the safety bars 10 and 20 closer to the driver, the driver first removes the split pin 60 from the pin 6 and removes the pin 6 from the through hole 11c, and then the base end portion. 11 is inserted into the fitting member 3 ′. Thereby, the support part 12 of each safety bar 10 and 20 moves to the side approaching a driver (namely, vehicle rear side), and the clearance gap between a driver and each safety bar 10 and 20 can be narrowed. After the support portion 12 has moved to a desired position, the driver inserts the pin 6 into the through hole 3 ′ a and the through hole 11 c aligned therewith, and attaches the split pin 60 to the tip of the pin 6.

  On the contrary, when the safety bars 10 and 20 are desired to be separated from the driver, the driver removes the split pin 60 from the pin 6 and removes the pin 6 from the through hole 11c, and then the base end portion. 11 is pulled out to the outside of the fitting member 3 ′. Thereby, the support part 12 of each safety bar 10 and 20 moves to the side away from a driver (namely, vehicle front side), and the clearance gap between a driver and each safety bar 10 and 20 can be expanded. After the support portion 12 has moved to a desired position, the driver inserts the pin 6 into the through hole 3 ′ a and the through hole 11 c aligned therewith, and attaches the split pin 60 to the tip of the pin 6.

  In this way, the gap between the support portion 12 of the safety bars 10 and 20 and the driver can be adjusted, and the support portion 12 can be arranged at an optimal position according to the physique and body shape of the driver. The mounting property of the bars 10 and 20 can be improved. As a result, the driver can be reliably supported by the support portions 12 of the safety bars 10 and 20 when the driver is about to be thrown forward when the vehicle is moved forward.

  In this case, since the base end portion 11 can be moved or fixed in the vehicle front-rear direction by inserting and removing the pin 6 with respect to the through holes 3′a and 11c, the support portion of the safety bars 10 and 20 is supported. 12 positions can be adjusted easily.

<Third embodiment>
As shown in FIG. 5, the adjusting mechanism according to the third embodiment has a cylindrical fitting member 3 ″ that fits on the outer periphery of the rear end side portion of the base end portion 11. "" Is provided on the side of the seat S and is fixed in the longitudinal direction of the vehicle. The fitting member 3 ″ is formed with a through hole 3 ″ a. A plurality of recesses 11 d are arranged in the rear end portion of the base end portion 11 in the direction of the axis X of the base end portion 11.

  In addition, a handle 7 with a latch is provided on a part of the outer peripheral surface of the fitting member 3 ″. The handle 7 with a latch has an operating portion 70 for operation by the driver and an outer periphery of the fitting member 3 ″. And a latch 71 protruding to the side facing the surface. Further, the handle 7 with a latch is rotatable around a support shaft 72 attached to the opposite end of the operation portion 70, and the latch 71 is inserted through the through hole 3 "a of the fitting member 3". The engagement position (see FIG. 5) that engages with the recess 11d in the rear end portion of the base end portion 11 and the disengagement position in which the latch 71 moves to the outer peripheral side of the fitting member 3 ″ and leaves the recess 11d (see FIG. 5). The support shaft 72 is supported by a bracket 73 fixed to the outer peripheral surface of the fitting member 3 ″. A spring (not shown) is interposed between the opposite end of the operation unit 70 and the support shaft 72, and the latch 71 is fitted into the handle 7 with a latch by the elastic repulsive force of the spring. The joint member 3 ″ is always biased toward the side inserted into the through hole 3 ″ a.

  The latch 71 of the handle with latch 7 engages with the recess 11d in the rear end portion of the base end portion 11, whereby the rear end portion of the base end portion 11 and the fitting member 3 "are fixed in the vehicle front-rear direction. At the same time, the fitting member 3 ″ is rotatable about the axis X in the vehicle longitudinal direction together with the rear end portion of the base end portion 11.

  Also in the third embodiment, as in the first and second embodiments, after the driver gets into the vehicle, the safety bars 10 and 20 are placed at the front mounting position of the seat S (the position shown by the solid line in FIG. 1). ) To adjust the position of each safety bar 10, 20.

  For example, when it is desired to bring the safety bars 10 and 20 closer to the driver, the driver first operates the handle 7 with latch to move the latch 71 to the disengagement position that is out of the recess 11d. In this case, the driver may move the operating portion 70 of the handle 7 with the latch to the side away from the fitting member 3 ″. From this state, the rear end portion of the base end portion 11 is moved to the fitting member 3 ″. To enter inside. Thereby, the support part 12 of each safety bar 10 and 20 moves to the side approaching a driver (namely, vehicle rear side), and the clearance gap between a driver and each safety bar 10 and 20 can be narrowed. After the support portion 12 has moved to a desired position, the driver releases his / her hand from the operation portion 70 of the handle 7 with latch, and engages the latch 71 with another concave portion 11d in the rear end side portion of the base end portion 11. .

  On the contrary, when the safety bars 10 and 20 are desired to be separated from the driver, the driver operates the handle 7 with the latch to move the latch 71 to the disengagement position that is out of the recess 11d. From this state, the rear end side portion of the base end portion 11 is pulled out of the fitting member 3 ″. Thereby, the support portion 12 of each safety bar 10, 20 is moved away from the driver (that is, the vehicle front side). The gap between the driver and each of the safety bars 10 and 20 can be increased by moving the support unit 12 to a desired position, and then the driver releases his / her hand from the operation unit 70 of the latched handle 7. The latch 71 is engaged with a further recess 11 d in the rear end side portion of the base end portion 11.

  In this way, the gap between the support portion 12 of the safety bars 10 and 20 and the driver can be adjusted, and the support portion 12 can be arranged at an optimal position according to the physique and body shape of the driver. The mounting property of the bars 10 and 20 can be improved. As a result, the driver can be reliably supported by the support portions 12 of the safety bars 10 and 20 when the driver is about to be thrown forward when the vehicle is moved forward.

  In this case, by operating the latched handle 7, the base end portion 11 can be moved or fixed in the vehicle front-rear direction, so that the position adjustment of the support portion 12 of the safety bars 10, 20 is easily performed. be able to.

<Other embodiments>
In the first embodiment, the rear end side portion of the base end portion 11 and the fitting member 3 are fixed in the vehicle front-rear direction and connected to the vehicle front-rear direction so as to be rotatable about an axis in the vehicle front-rear direction. Although the example using the nut 40 was shown, application of the present invention is not limited to this.

  Instead of the bolt 4 and the nut 40, a pin 6 as shown in the second embodiment and a split pin 60 for retaining this pin may be used. However, in this case, in order to fix the rear end side portion of the base end portion 11 and the fitting member 3 in the vehicle front-rear direction, a double nut structure in which the nut member 5 is further disposed on the right side of the nut member 5 in the drawing is used. preferable.

  In this case, a long hole in the vehicle front-rear direction may be formed in the rear end portion of the base end portion 11 and a through hole may be formed in the fitting member 3.

  In each of the above embodiments, an example in which the safety bar 1 is composed of a pair of left and right safety bars 10 and 20 has been described, but the application of the present invention is not limited to this. The present invention can be similarly applied to a substantially U-shaped integrated safety bar having a structure in which the support portions of the left and right safety bars are connected to each other.

  Moreover, in the said Example, the rear-end side part of the base end part of a safety bar was comprised from the solid member, the fitting member was comprised from the cylindrical hollow member, and the rear-end side part of a base end part was comprised. Although the example which fits the fitting member on the outer peripheral side has been shown, the application of the present invention is not limited to this. Contrary to each of the above embodiments, the fitting member is constituted by a solid member, the rear end side portion of the base end portion of the safety bar is constituted by a cylindrical hollow member, and the outer peripheral side of the fitting member is provided. You may make it fit the rear-end side part of a base end part. In this case, the rear end side portion of the base end portion and the fitting member are connected by a bolt, a pin, or a handle with a latch, as in the above embodiments.

<Other application examples>
In each of the above embodiments, the safety bar adjusting mechanism according to the present invention is applied to a skid steer loader. However, the present invention can be applied to other industrial vehicles as well.

  As described above, the present invention is useful for an industrial vehicle such as a skid steer loader, and is particularly suitable for a safety bar that is required to be mounted.

1, 10, 20: Safety bar

3, 3 ', 3 ": Fitting member 3a, 3'a, 3" a: Through hole

4: Bolt 40: Nut

5: Nut member (fixing member)

6: Pin 60: Split pin

7: Handle with latch 71: Latch

11: Base end 11b: Through hole 11c: Through hole 11d: Recess

12: Support section

S: Sheet X: Axis

Japanese Utility Model Publication No. 3-123750 (see FIGS. 4 and 6)

Claims (9)

In an industrial vehicle, a safety bar adjustment mechanism for adjusting the position of a safety bar that supports a driver from the front,
The safety bar includes a base end portion extending in the vehicle front-rear direction and a support portion disposed on the front end side of the base end portion and extending in the vehicle width direction,
The base end portion is provided so as to be rotatable around an axis in the vehicle front-rear direction and slidable in the vehicle front-rear direction.
An industrial vehicle safety bar adjustment mechanism. In claim 1,
In a state where the rear end side portion of the base end portion is fitted to the fitting member provided on the side of the seat and is provided rotatably with the fitting member, and is fitted to the fitting member. It is provided to be movable in the vehicle front-rear direction with respect to the fitting member.
An industrial vehicle safety bar adjustment mechanism. In claim 2,
The rear end side portion and the fitting member of the base end portion are inserted through the rear end side portion and the fitting member in a direction perpendicular to the vehicle longitudinal axis, and the rear end side portion and the fitting member are inserted. A coupling member is provided for fixing the joint member in the vehicle front-rear direction and for pivotally coupling about the axis in the vehicle front-rear direction.
An industrial vehicle safety bar adjustment mechanism. In claim 3,
Of the rear end side portion of the base end portion or the fitting member, a member arranged on the outer peripheral side extends in a long hole shape in the vehicle front-rear direction and penetrates in a direction orthogonal to the axis in the vehicle front-rear direction. The through holes are formed, and the members arranged on the inner peripheral side are formed with through holes penetrating in a direction perpendicular to the axis in the vehicle front-rear direction. Bolts as the connecting members are formed in these through holes. Is inserted, and a nut is screwed into the threaded portion of the bolt,
An industrial vehicle safety bar adjustment mechanism. In claim 2,
One member of the rear end side portion of the base end portion or the fitting member is formed with a through hole extending in a long hole shape in the vehicle front-rear direction and penetrating in a direction perpendicular to the axis in the vehicle front-rear direction. The other member is formed with through holes penetrating in a direction perpendicular to the vehicle longitudinal axis. Pins are inserted into these through holes, and a retaining member is attached to the tip of the pin. In addition, a fixing member for fixing the rear end side portion of the base end portion and the fitting member in the vehicle front-rear direction is provided.
An industrial vehicle safety bar adjustment mechanism. In claim 3,
Of the rear end side portion of the base end portion or the fitting member, a member disposed on the outer peripheral side is formed with a through-hole penetrating in a direction orthogonal to the vehicle longitudinal axis, on the inner peripheral side. The disposed member is formed with a plurality of through holes penetrating in a direction orthogonal to the vehicle longitudinal axis, and pins as the connecting members are inserted into the through holes, and the pins A retaining member is attached to the tip of the
An industrial vehicle safety bar adjustment mechanism. In claim 2,
Of the rear end side portion of the base end portion or the fitting member, a member disposed on the outer peripheral side is provided with a handle with a latch, and a member disposed on the inner peripheral side is provided with a front latch. A plurality of recesses for engaging a latch of the handle in a freely detachable manner and fixing the rear end side portion in the vehicle front-rear direction when the latch is engaged are formed.
An industrial vehicle safety bar adjustment mechanism. In claim 1,
The safety bar is composed of a pair of safety bars respectively provided on the left and right sides of the seat, and each safety bar has the base end portion and the support portion, respectively.
An industrial vehicle safety bar adjustment mechanism. In claim 1,
The safety bar is a one-piece substantially composed of a pair of base end portions disposed on both left and right sides of the seat, and the support portion that connects the front end side portions of the base end portions to each other. A U-shaped member,
An industrial vehicle safety bar adjustment mechanism.

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