JP2014064644A - Lock structure of rotary fence and bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a fixation release operation for a rotary fence and avoid a situation that a fixation release operation is performed inadvertently at the same time.SOLUTION: A lock structure of a rotary fence includes a control lever 3 for performing a fixation operation and a fixation release operation for a rotary fence 2 with respect to a fixed fence 1, and a lock lever 4 for regulating an operation of the control lever 3. The direction of the release operation of the regulation in the lock lever 4 is opposite to the direction of the fixation release operation of the rotary fence in the control lever 3.

Description

  The present invention relates to a rotating fence locking structure in a bed side fence comprising a fixed fence fixed to a bed and a rotating fence rotatably connected to the fixed fence, and for a bed having the rotating fence locking structure. It relates to a bed with a side fence.

  In a bed used for care, a side rail is attached to the frame of the bed in order to prevent the user from falling from the bed. In addition, the side fence is composed of a fixed fence and a rotating fence that is rotatable with respect to the fixed fence, and the side fence does not get in the way by rotating the rotating fence when the user leaves the bed. The thing which can do is provided.

  Here, when the user leaves the bed, the user needs to be able to fix the rotating fence so that the user can grasp and stand up the rotating fence rotated with respect to the fixed fence. In addition, it is necessary to be able to release the fixation and release the fixation in consideration of the case where the care recipient is a user.

  However, if the fixing and the unlocking can be performed by, for example, raising and lowering the operation lever, the fixing may be inadvertently released.

JP 2006-21015 A

  The present invention has been made in view of the above problems, and can be used to easily unlock the rotating fence, and at the same time, avoid the situation where the fixing is inadvertently released. It is an issue to provide.

  The lock structure of the rotary fence according to the present invention is a lock structure of the rotary fence in the bed side fence composed of a fixed fence fixed to the bed and a rotary fence rotatably connected to the fixed fence. An operation lever for fixing and releasing the rotating fence with respect to the fence, and a lock lever for restricting the operation of the operation lever, and the release operation direction of the restriction on the lock lever is the direction of the rotation fence on the operation lever. It is characterized in that it is in the direction opposite to the fixing release operation direction.

  It is preferable that a release operation direction of the restriction in the lock lever is a downward direction, and a fixed release operation direction of the rotating fence in the operation lever is an upward direction.

  In addition, the lock lever is rotatably supported by a shaft provided on the operation lever, and a support body supporting the operation lever is provided on the rear end side of the lock lever whose front end is an operation portion. It is preferable to provide an engagement recess that engages with the provided locking projection and restricts the operation of the operation lever.

  Furthermore, a member for fixing the rotating fence is connected to the other end of the connecting shaft that is connected to the operating lever at one end and moves in the axial direction in accordance with the operation of raising and lowering the operating lever. It is preferable that the operation lever includes a cam that self-holds the raised state and the tilted state with the support body supporting the operation lever.

  The operation portion of the lock lever is narrower than the operation lever and is positioned in a groove provided on the upper surface of the operation lever, and the unlocking operation direction of the operation lever is a pulling direction, It is possible to suitably use the lock lever whose release operation direction is the pushing direction.

  And the bed which concerns on this invention has the characteristics in having the bed side fence which has the lock structure of said rotation fence.

  In the present invention, since the lock lever for locking the operation lever is provided and the operation lever cannot be operated to unlock the rotating fence unless the lock lever is operated, the unlocking is inadvertently released. In addition, the operation direction of the lock lever for releasing the lock and the operation direction of the operation lever for releasing the lock of the rotating fence are reversed. Unintentional unlocking operation can be eliminated without accidentally performing the unlocking by the lock lever at the same time during the operation.

It is sectional drawing of an example of embodiment of this invention. It is a perspective view same as the above. It is a principal part perspective view same as the above. (a)-(f) is sectional drawing which shows an operation | movement same as the above. It is a principal part perspective view of another example.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. FIG. 2 shows an entire bed side fence provided with a locking means according to the present invention, and is a fixed fence fixed to a bed (not shown). 1 is configured such that a rotating fence 2 is rotatably connected to an end portion in the longitudinal direction of 1.

  The fixed fence 1 has two legs 11, 11 projecting downward, inserted into a fixed hole provided in the frame of the bed, and operating the operation part 5 provided on the fixed fence 1 to operate the lower end of each leg 11. The oblique mortar 12 provided on the frame is pulled up and fixed to the frame. In addition, description about the connection structure of the operation unit 5 and the oblique mortar 12 is omitted here.

  The rotating fence 2 has two upper and lower portions at one end thereof attached to the fixed fence 1 so as to be rotatable about the vertical axis. FIG. 1 shows the structure of the lower attaching portion. In the figure, reference numeral 6 denotes a cylindrical support body in which a fixing portion 69 protruding sideways is fixed to the fixed fence 1, and a radial engagement groove 63 is provided on the lower end surface of the support body 6. Yes.

  At the upper end of the support 6 is provided a shaft 60 whose axial direction is the horizontal direction. A shaft 60 formed of a spring pin is inserted into an arcuate groove 30 provided in the operation lever 3, so that the operation lever 3 is rotatable around the shaft 60. Further, the upper end of a connecting shaft 62 penetrating up and down in the support body 6 is connected to the operating lever 3 by a shaft 61, and the connecting shaft 62 moves up and down as the operating lever 3 rotates.

  A lock lever 4 is rotatably attached to the operation lever 3 by a shaft 40. The lock lever 4 formed so as to cover the upper surface on the base end side of the operation lever 3 has an operation portion 41 whose tip is narrower than that of the operation lever 3, and as shown in FIG. It is located in a groove 35 provided on the upper surface. As shown in FIG. 1, an engagement recess 42 is provided at the rear end of the lock lever 4 to engage with a locking projection 68 provided on the upper end edge of the support 6.

  The lower end portion of the connecting shaft 62 projecting downward from the lower end of the support body 6 is provided with a radial groove 65 on the upper end surface and is slidably arranged up and down in a state of being prevented from rotating around the rotary fence 2. 64, and a fixing nut 67 is attached to the lower end. In the figure, reference numeral 66 denotes a spring that biases the engagement body 64 toward the support body 6.

  The state shown in FIG. 1 in which the operation lever 3 is tilted is a state in which the engagement groove 65 of the engagement body 64 and the engagement groove 63 at the lower end of the support body 6 are engaged with each other when the connecting shaft 62 is pulled up. . At this time, the spring 66 is strongly compressed. For this reason, the rotating fence 2 is in a state of being prevented from rotating with respect to the fixed fence 1.

  Further, since the rear end side of the lock lever 4 having the engagement recess 42 is heavier than the front end side serving as the operation portion 41, the rear end side is lowered and the locking protrusion 68 enters the engagement recess 42. Yes. For this reason, even if the operation lever 3 is to be pulled up, the lock lever 4 attached to the operation lever 3 hits the support 6 and cannot be pulled up.

  However, as shown in FIG. 4 (f), when the operation portion 41 of the lock lever 4 is pushed in, the rear end portion of the lock lever 4 is separated from the locking projection 68, so that the operation lever 3 is maintained while maintaining this state. By pulling up, the operation lever 3 can be raised. When the operation lever 3 is raised, the position of the shaft 61 is lowered, so that the connecting shaft 62 is also lowered, and the engagement groove 65 of the engagement body 64 and the engagement groove 63 at the lower end of the support body 6 are connected to the spring 66. It will only contact loosely in the state of receiving the bias. In addition, since the side walls of the engagement grooves 63 and 65 are inclined surfaces, the rotary fence 2 can be rotated with respect to the fixed fence 1. A click feeling is generated at each angle corresponding to the groove interval of the joint groove 65.

  After rotating the rotating fence 2 and changing the angle with respect to the fixed fence 1, if the operation lever 3 is tilted, the connecting shaft 62 is pulled up, so that the engaging groove 65 of the engaging body 64 and the lower end of the supporting body 6 are engaged. The groove 63 is strongly engaged again, and the rotating fence 2 cannot be rotated. Further, in a state where the rotating fence 2 is fixed, the lock lever 4 returns to a position where it engages with the support body 6 under its own weight, so that the operation lever 3 is locked.

  Here, the shaft 60 for supporting the operation lever 3 provided on the support 6 is not essential. This is because the lower end of the connecting shaft 62 connected to the operation lever 3 by the shaft 61 is on the side of the rotating fence 2 by the fixing nut 67 and is guided for rotation on the upper inner peripheral surface of the support 6. However, the provision of the shaft 60 prevents the operation lever 3 from being lifted together with the rotation fence 2 when the rotation of the rotation fence 2 is made free. 2 is forcibly lowered to the unlock position.

  The shaft 60 is inserted into an arc-shaped groove 30 provided in the operation lever 3 so that the position of the shaft 60 in the groove 30 changes as the operation lever 3 is operated. The shaft 61 that connects the operation lever 3 and the connecting shaft 62 is always positioned directly above the hole in the support 6 through which the connecting shaft 62 is inserted, so that the connecting shaft 62 moves smoothly.

  In addition, since the outer surface of the square cam 32 provided on the operation lever 3 is in contact with the upper surface portion of the support 6, a sense of moderation can be given to the operation of the operation lever 3. Moreover, the operation lever 3 self-holds with the cam 32 in a state where the operation lever 3 is tilted and the rotation fence 2 is fixed and a state where the operation lever 3 is raised and the rotation fence 2 is rotatable.

  When the operation lever 3 is tilted, the lock lever 4 is brought to the lock position by its own weight, but may be brought to the lock position by the spring bias instead of its own weight. Even in the case of spring bias, when the operation lever 3 is moved from the raised state to the tilted state, the locking protrusion 68 of the support 6 operates the lock lever 4 to slide on the inner surface of the lock lever 4. There is no need to automatically shift to the locked state shown in FIG.

  The operation part 41 on the distal end side of the lock lever 4 is made narrower than the operation lever 3 and is positioned in the groove 35 on the upper surface of the operation lever 3 for the following reason. That is, as shown in FIG. 5, when the full width of the operation portion 41 of the lock lever 4 is wider than the full width of the operation lever 3, the lock lever is placed between the upper surface of the operation lever 3 and the lower surface of the operation portion 41 of the lock lever 4. There must be a gap. This is because such a gap may cause a situation in which clothes of a bed user or a caregiver are caught.

  In the above embodiment, the lock lever 4 is pushed down to release the lock and the operation lever 3 is pulled up. However, it is sufficient that the operation direction of the lock lever 4 and the operation direction of the operation lever 3 are opposite to each other. Further, the operation direction of the lock lever 4 and the operation lever 3 may be the left-right direction, not the up-down direction, or the clockwise direction and the counterclockwise direction. However, although the operation direction of the operation lever 3 and the lock lever 4 in the illustrated example is opposite to each other, the operation lever 3 is raised by pushing the operation portion 41 of the lock lever 4 with the palm of the hand while holding the operation lever 41 with the palm. Can do. For this reason, the operability of unlocking the rotating fence 2 is extremely excellent.

  In any case, in the present invention, the rotation fence 2 cannot be rotated unless the operation lever 3 is operated in the direction opposite to the direction in which the lock lever 4 is operated. Is never made carelessly.

DESCRIPTION OF SYMBOLS 1 Fixed fence 2 Rotating fence 3 Operation lever 4 Lock lever 6 Support body

Claims (6)

  Locking structure of the rotating fence in the bed side fence which consists of a fixed fence fixed to the bed and a rotating fence rotatably connected to the fixed fence, and fixing operation and fixing release operation of the rotating fence with respect to the fixed fence And a lock lever that restricts the operation of the operation lever, and the release operation direction of the restriction on the lock lever is opposite to the direction of the unlocking operation of the rotating fence in the operation lever. Rotating fence lock structure characterized by that.   2. The rotating fence locking structure according to claim 1, wherein the restriction releasing operation direction in the lock lever is a downward direction, and the fixing release operation direction of the rotating fence in the operation lever is an upward direction.   The lock lever is rotatably supported by a shaft provided on the operation lever, and is provided on a support body supporting the operation lever on the rear end side of the lock lever whose front end is an operation portion. 3. The lock structure of the rotating fence according to claim 1, further comprising an engagement recess that engages with a locking projection to restrict the operation of the operation lever.   A member for fixing the rotating fence is connected to the other end of the connecting shaft that is connected to the operating lever at one end and moves in the axial direction in accordance with the raising / lowering operation of the operating lever. The rotation according to any one of claims 1 to 3, further comprising a cam that self-holds a raised state and a tilted state with a support body supporting the operation lever. Fence lock structure.   The operation portion of the lock lever is narrower than the operation lever and is positioned in a groove provided on the upper surface of the operation lever, and the unlocking operation direction of the operation lever is a pulling direction, and the lock lever 4. The lock structure for a rotating fence according to claim 3, wherein the release operation direction of the restriction is a pushing direction.   A bed comprising the bed side fence having the lock structure of the rotating fence according to any one of claims 1 to 5.

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