Wiring configuration of tension member of screen device

Abstract

The connector 11 longer in the Z-axis direction is connected to the second guide unit 73 located at the Z-axis direction one end of the second guide portion 7 in the second housing portion 23 of the frame 2 freely slidably moved, and forms a free end 71, and has a recess 111 having a pair of connection pieces 111b opposed in the Y-axis direction at the Z-axis direction other end portion, and a protrusion 112 formed in a separate body capable of being fixed to the recess 111, the third hole 111a allowing each of the second pins 73c of the second guide unit 73 to be fitted with play is provided in the pair of connection pieces 111b, the fourth hole 111c for fastening is provided in the recess 111 at the Z-axis direction one end portion along the X-axis direction, and the receiving portion 111d extending along the Z-axis direction is formed, the protrusion 112 is capable of being received in the receiving portion 111d of the recess 111, both of the one end and the other end of the tension member 8 are fixed to the protrusion 112, and the fixing piece 112b having the fifth hole 112a capable of communicating with the fourth hole 111c of the recess 111 is provided extending from the Z-axis direction one end portion to the Z-axis direction one side.

Description

Technical Field

[0001] This invention relates to a wiring structure for tension components of screen devices such as curtains, blinds, light-blocking mechanisms, dimming mechanisms, screens, and partitions. Background Technology

[0002] Conventionally, such screen devices have been known to have the following structure, which generally includes: a screen that can be freely unfolded and retracted; a pair of frames that are arranged opposite each other in the X-axis direction when the unfolding and retraction directions of the screen are set to the X-axis direction among three orthogonal axes, namely the X-axis, Y-axis, and Z-axis, such that at least one of the frames can slide freely along the X-axis direction, and the pair of frames consists of a first frame and a second frame that are longer and hollow in the Z-axis direction; a first guide portion and a second guide portion that are pulled out from the interior of the freely sliding frame in the X-axis direction to the other side when the freely sliding frame slides in the X-axis direction, and when the freely sliding frame slides in the X-axis direction... When sliding to the other side, it is housed inside a freely sliding frame and has a free end at one end; and a tension member, which is housed inside the freely sliding frame in a manner arranged along the Z-axis direction, connects the free ends of the first guide portion and the second guide portion to form a ring, one end of the screen in the X-axis direction is fixed to the first frame, the other end of the screen in the X-axis direction is fixed to the second frame, and a portion of the first guide portion pulled out from inside the freely sliding frame extends in a straight line along the X-axis direction between the Z-axis direction ends of the pair of frames, and a portion of the second guide portion pulled out from inside the freely sliding frame extends in a straight line along the X-axis direction between the Z-axis direction ends of the pair of frames (see, for example, Patent Document 1).

[0003] In the screen device described in Patent Document 1, the first guide portion is formed by connecting multiple first guide units. Each first guide unit includes: a pair of first sidewalls arranged opposite each other in the Y-axis direction when the first guide portion is pulled out from the interior of the freely sliding frame, and a bottom wall connecting the two first sidewalls. In the first guide portion, one of the two adjacent first guide units is pivotally supported by the other first guide unit. By means of this pivot support, the first guide portion bends to the other side in the Z-axis direction and maintains straightness in the X-axis direction. The Z-axis end of the unfolded screen is inserted between the two first sidewalls of each first guide unit in the part of the first guide portion that is pulled out from the interior of the freely sliding frame.

[0004] In addition, a pair of first pins facing outward in the opposite direction are provided at one end of the two first sidewalls of each first guide unit in the X-axis direction, and a pair of first openings are provided at the other end in the X-axis direction. The two adjacent first guide units are connected by fitting the first pins of the other first guide unit into the first openings of one first guide unit in a manner with clearance. The two first pins form a pivot, and each first guide unit can pivot freely.

[0005] Furthermore, the second guide portion is formed by connecting multiple second guide units, each second guide unit having: a pair of second sidewalls, which are arranged opposite each other in the Y-axis direction and shorter in the Z-axis direction than the first sidewall of the first guide unit when the second guide portion is pulled out from the interior of the freely sliding frame; and an upper wall that connects the two second sidewalls on the other side in the Z-axis direction. In the second guide portion, one of the two adjacent second guide units is pivotally supported on the other second guide unit. Through this pivotal support, the second guide portion bends towards the Z-axis direction and maintains straightness in the X-axis direction. The other end of the unfolded screen in the Z-axis direction is inserted between the two second sidewalls of each second guide unit in the portion of the second guide portion that is pulled out from the interior of the freely sliding frame.

[0006] In addition, a pair of second pins facing outward in the opposite direction are provided at one end of the two second sidewalls of each second guide unit in the X-axis direction, and a pair of second openings are provided at the other end in the X-axis direction. The two adjacent second guide units are connected by fitting the second pins of the other second guide unit into the second openings of one second guide unit in a manner with clearance. The two second pins form a pivot, and each second guide unit can pivot freely.

[0007] Furthermore, in the screen device described in Patent Document 1, the interior of the freely sliding frame is divided into a first storage part that stores the first guide part on one side in the X-axis direction and a second storage part that stores the second guide part on the other side in the X-axis direction. Both the first storage part and the second storage part can allow the tension member to be inserted.

[0008] Furthermore, a direction conversion member is provided at one end of the first storage section of the freely sliding frame in the Z-axis direction and at the other end in the Z-axis direction, respectively, for the tension member to hook and for the tension member to change direction in the Z-axis direction.

[0009] Existing technical documents

[0010] Patent documents

[0011] Patent Document 1: Japanese Patent Application Publication No. 2014-91980 Summary of the Invention

[0012] In the screen device described in Patent Document 1, the length of the two second sidewalls of each second guide unit forming the second guide portion in the Z-axis direction is shorter than the length of the two first sidewalls of each first guide unit forming the first guide portion. Therefore, the width of the second storage portion accommodating the second guide portion in the X-axis direction is smaller than that of the first storage portion. As a result, the width of the freely sliding frame in the X-axis direction, i.e., its overall dimensions, can be reduced.

[0013] On the other hand, the length of the two side walls of each first guide unit in the Z-axis direction is longer than that of the two side walls of each second guide unit. Therefore, in order to smoothly pivot each first guide unit, the first guide part is stored and pulled out relative to the interior of the freely sliding frame. As a result, the curvature of the first guide part when it bends is greater than that of the second guide part when it bends. The first storage part for storing the first guide part is arranged on one side of the freely sliding frame in the X-axis direction.

[0014] Here, regarding the tension member that connects the free ends of the first guide portion and the second guide portion to form a ring, the retracted length and extended length of the first retracted portion relative to the first guide portion are the same as the retracted length and extended length of the second retracted portion relative to the second guide portion, which helps to reliably and parallelly slide the freely sliding frame relative to another frame. Furthermore, the aforementioned tension member also helps to achieve parallel sliding of the freely sliding frame even if the user performs a closing operation at any point in the Z-axis direction of the freely sliding frame.

[0015] Such a tension member typically uses a rope or the like. The tension member is fixed at the free end of the first guide part in the middle of its length direction, and hooked to a direction conversion member provided at one end of the Z-axis direction and the other end of the freely sliding frame. One end and the other end of the tension member are fixed to the free end of the second guide part, and are inserted into the first and second storage parts inside the freely sliding frame for wiring.

[0016] Regarding the wiring of such tension members, since the tension members are hooked to direction-changing members respectively provided at one end of the freely sliding frame in the Z-axis direction and the other end in the Z-axis direction, the wiring is performed inside the freely sliding frame. The X-axis end of the screen is fixed to the other end of the freely sliding frame in the X-axis direction, so the X-axis end of the freely sliding frame is set as an open end, and the wiring of the tension members is performed through this open end in the first and second storage sections inside the freely sliding frame. However, since the first storage section is arranged on the open end side of the freely sliding frame, the second storage section moves away from the open end of the freely sliding frame away from the first storage section, fixing both one end and the other end of the tension member. The free end of the second guide section stored in the second storage section is also located away from the open end of the freely sliding frame. Therefore, wiring the tension member, which is attached to the direction conversion member at one end of the freely sliding frame in the Z-axis direction and the other end of the tension member, and whose free end is fixed to the free end of the second guide, is not easy to do and requires skill.

[0017] In view of the above-mentioned problems, the present invention aims to provide a wiring structure for the tension component of a screen device that facilitates wiring operations for the tension component.

[0018] To address the aforementioned issues, the screen device of the present invention comprises: a screen capable of being freely unfolded and retracted; a pair of frames arranged opposite each other in the X-axis direction, wherein at least one of the frames is freely slidable along the X-axis direction when the unfolding and retraction directions of the screen are set to the X-axis direction among three orthogonal axes, namely the X-axis, Y-axis, and Z-axis, and wherein the pair of frames is composed of a first frame and a second frame that are longer and hollow in the Z-axis direction; a first guide portion and a second guide portion, wherein when the freely slidable frame slides to one side in the X-axis direction, the first guide portion and the second guide portion are pulled out from the interior of the freely slidable frame to the other side in the X-axis direction, and in When the freely sliding frame slides to the other side in the X-axis direction, it is housed inside the freely sliding frame and has a free end at one end; and a tension member, which is housed inside the freely sliding frame in a manner arranged along the Z-axis direction, connects the free ends of the first guide and the second guide to form a ring, one end of the screen in the X-axis direction is fixed to the first frame, the other end of the screen in the X-axis direction is fixed to the second frame, and a portion of the first guide pulled out from inside the freely sliding frame extends linearly along the X-axis direction between the two ends of the frames in the Z-axis direction, and a portion of the second guide pulled out from inside the freely sliding frame extends linearly along the X-axis direction between the two ends of the frames in the Z-axis direction. The ends extend in a straight line along the X-axis direction. The first guide portion is formed by connecting multiple first guide units. Each first guide unit includes: a pair of first sidewalls disposed opposite each other in the Y-axis direction, and a bottom wall connecting the two first sidewalls. In the first guide portion, one of two adjacent first guide units is pivotally supported by the other first guide unit. Through this pivotal support, the first guide portion bends to the other side in the Z-axis direction while maintaining straightness in the X-axis direction. One end of the unfolded screen in the Z-axis direction is inserted between the two first sidewalls of each first guide unit in the portion of the first guide portion that is pulled out from the interior of the freely sliding frame. Each first guide unit has a pair of first pins at one end of the two first sidewalls in the X-axis direction facing outward in the opposite direction of the two sidewalls, and a pair of first openings at the other end in the X-axis direction. Two adjacent first guide units are connected by fitting the first pins of the other first guide unit into the first openings of one first guide unit in a manner with clearance. The two first pins form a pivot, and each first guide unit can pivot freely. The second guide part is formed by connecting multiple second guide units. Each second guide unit has a pair of second sidewalls that are arranged opposite each other in the Y-axis direction and whose length in the Z-axis direction is shorter than that of the first sidewalls of the first guide unit.And the upper wall, which connects the two second side walls on the other side in the Z-axis direction. In the second guide section, one of the two adjacent second guide units is pivotally supported by the other second guide unit. Through this pivot support, the second guide section bends towards the Z-axis direction and maintains straightness in the X-axis direction. The other end of the unfolded screen in the Z-axis direction is inserted between the two second side walls of each second guide unit in the part of the second guide section that is pulled out from the inside of the freely sliding frame. One end of the sidewall in the X-axis direction is provided with a pair of second pins facing outwards in the opposing direction of the two second sidewalls, and a pair of second openings are provided at the other end in the X-axis direction. The two adjacent second guide units are connected by fitting the second pins of the other second guide unit into the second openings of one second guide unit in a manner with clearance. The two second pins form a pivot, and each second guide unit can pivot freely. The interior of the frame that can slide freely is divided into a first storage part that stores the first guide part on one side in the X-axis direction. The first and second storage portions are designed to accommodate the second guide portion on the other side of the X-axis direction. Both the first and second storage portions allow the tension member to pass through. A direction-changing member is provided at one end of the first storage portion in the Z-axis direction and the other end in the Z-axis direction for the tension member to hook onto and for changing the direction of the tension member in the Z-axis direction. The characteristic feature is that a second guide unit is connected to the second guide portion located at one end of the second guide portion in the Z-axis direction within the second storage portion of the freely sliding frame, and in the Z-axis direction... The longer connector forms the free end of the second guide portion. The connector has: a recess with a pair of connecting pieces facing each other in the Y-axis direction at the other end in the Z-axis direction, a third opening on the pair of connecting pieces for fitting each second pin of the second guide unit located at one end in the Z-axis direction in the second receiving portion with clearance, and a fourth opening for fastening at one end in the Z-axis direction along the X-axis direction, and a hollow receiving portion extending along the Z-axis direction and open at least one end in the X-axis direction.The connector also includes a protrusion that is formed to be separate from the recess and can be received within the recess, and a fixing plate extending from one end in the Z-axis direction to the Z-axis side is provided to fix one end and the other end of the tension member. The fixing plate has a fifth opening along the X-axis direction that can communicate with the fourth opening of the recess. The connector's protrusion has a pair of claws protruding to the other side in the Z-axis direction at both ends in the Y-axis direction at the other end in the Z-axis direction. On the connector's protrusion, a first slit extending toward the Z-axis side is formed at the other end in the Z-axis direction, and a slit extending from the other end in the Z-axis direction toward one end in the Z-axis direction is also formed. The elongated hole has a window opening at one end in the Z-axis direction, and a second slit extending from one end of the window opening toward the Z-axis end of the protrusion is formed. At the other end of the receiving portion of the connector recess in the Z-axis direction, a pair of locking holes are formed to allow the claws of the connector protrusion to engage. With the tension member in the first receiving portion of the freely sliding frame fixed to the free end of the first guide portion, one end portion of the tension member hooked onto one direction conversion member located at one end of the freely sliding frame in the Z-axis direction, and the other end portion of the tension member hooked onto the other direction conversion member located at the other side of the freely sliding frame in the Z-axis direction... Both parts are pulled outward from the X-axis end of the first storage section of the freely sliding frame. A knot is formed at the front ends of both sides of the tension member, on one end and the other. The knot on one end of the tension member passes through the window of the connector's protrusion and inserts into the interior of the second slit, hooking onto the Z-axis end of the protrusion and securing it. The knot on the other end of the tension member wraps around the X-axis end of the head of the first screw from the other side of the Z-axis direction. The knot on the other end of the tension member inserts into the interior of the first slit of the protrusion and hooks onto the other Z-axis end of the first slit and secures it. The first screw is inserted into the elongated hole and temporarily tightened. A nut is fixed to the portion protruding from the elongated hole to the other side of the protrusion in the X-axis direction. The protrusion passes through the first receiving portion of the freely sliding frame and inserts into the second receiving portion. Each claw of the protrusion is received in the second receiving portion and inserts into and locks into the locking holes of the receiving portion of the recess of the connector connected to the second guide unit located at one end in the Z-axis direction. The protrusion is then received in the receiving portion of the recess. In this received state, the fourth opening of the recess communicates with the fifth opening of the protrusion. The second screw is tightened from the fifth opening toward the fourth opening, thus securing the protrusion to the recess. The first screw is moved along the elongated hole in the Z-axis direction to adjust the tension applied to the tensioning member, and the first screw is then formally fixed to the nut.

[0019] According to the present invention, when wiring a tension member, both ends of the tension member can be pulled outward from the open end (X-axis direction) of the freely sliding frame while hooked onto direction conversion members provided at one end and the other end of the freely sliding frame in the Z-axis direction. After being pulled out, both ends of the tension member can be fixed to the protrusion of the connector forming the free end of the second guide portion outside the freely sliding frame. Furthermore, the protrusions to which both ends of the tension member are fixed can be received and fixed to the receiving portion of the recess of the connector fixed to the second guide unit, which is located at the Z-axis direction end of the second guide portion received in the second receiving portion. Therefore, fixing one end of the tension member to the free end of the second guide portion is easy, and in summary, wiring the tension member is easy. As a result, wiring the tension member does not require special skill. Attached Figure Description

[0020] Figure 1 This is a partial cross-sectional view of a screen device showing the wiring structure of the tension member of the screen device to which the present invention is applied.

[0021] Figure 2 It means Figure 1 A perspective view of one aspect of the first guide section shown.

[0022] Figure 3 (a) means Figure 1 A perspective view of one aspect of the second guide section shown, (b) is a representation of... Figure 1 A three-dimensional view of the second guiding unit shown.

[0023] Figure 4 (a) means Figure 1 (a) is a partial three-dimensional diagram showing the wiring structure of the tension component, and (b) is a partial three-dimensional diagram showing the wiring state of the tension component. Detailed Implementation

[0024] Reference Figure 1 The screen unit SD includes a screen 1 that can be freely unfolded and retracted. For example, it is installed at an opening such as a window frame or door frame, and the screen 1 allows the opening to be opened and closed horizontally. That is, in the screen unit SD, the unfolding and retraction direction of the screen 1 is set as the X-axis direction among three orthogonal axes: the X-axis, Y-axis, and Z-axis. The X-axis direction corresponds to the horizontal direction. Figure 1 The left and right directions), the Z-axis direction corresponds to the vertical direction ( Figure 1(The vertical direction). Therefore, in the following description, one side of the X-axis direction is left, the other side of the X-axis direction is right, one side of the Z-axis direction is down, and the other side of the Z-axis direction is up.

[0025] The screen device SD includes: a hollow first frame 2, which slides freely in the left-right direction through the opening and is longer in the vertical direction; and a hollow second frame 3, which is arranged opposite to the first frame 2 in the left-right direction, fixed to the right end of the opening, and longer in the vertical direction, forming a pair of frames. The left end of the screen 1 is fixed to the first frame 2, and the right end of the screen 1 is fixed to the second frame 3. Specifically, the left end of the screen 1 is fixed to the right end of the first frame 2, and the right end of the screen 1 is fixed to a portion of the outer periphery of a hollow roller tube 31 in the vertical direction. The roller tube 31 is rotatably housed inside the second frame 3 and is longer in the vertical direction. When the user of the screen device SD performs a closing operation by sliding the first frame 2 to the left, the screen 1 is released from the outer periphery of the roller tube 31 and unfolds into the opening. When the user stops closing the screen, the screen 1 is rolled up around the outer periphery of the roller tube 31 and stored inside the second frame 3. At this time, the first frame 2 automatically slides to the right, and when its right end contacts the left end of the second frame 3, the sliding of the first frame 2 to the right automatically stops.

[0026] To achieve automatic retraction of the screen 1 into the second frame 3, a helical spring 31a is installed inside the roller tube 31. When the first frame 2 slides to the left, the roller tube 31 rotates clockwise inside the second frame 3, releasing the screen 1. The helical spring 31a then twists around the rotation axis of the roller tube 31, generating and accumulating elastic force. When the user stops closing the screen, the accumulated elastic force is released, causing the roller tube 31 to rotate counter-clockwise inside the second frame 3, thus winding the screen 1 around the outer periphery of the roller tube 31.

[0027] Furthermore, to facilitate smooth sliding of the first frame 2 in the left and right directions, an upper guide rail 4 is provided at the upper end of the opening of the screen device SD, and a lower guide rail 5 is provided at the lower end of the opening of the screen device SD. The upper guide rail 4 is a hollow component with a U-shaped cross-section in the vertical direction, and the upper end of the first frame 2 is inserted into the upper guide rail 4. The lower guide rail 5 is a long, straight component in the left and right direction. A wheel (not shown) is provided at the lower end of the first frame 2, and this wheel rotates on the lower guide rail 5. In this way, the left and right sliding of the first frame 2 is guided by the upper guide rail 4 and the lower guide rail 5, thus enabling smooth sliding.

[0028] Furthermore, the screen device SD includes a first guide portion 6 and a second guide portion 7 that are pulled out from inside the first frame 2 when the first frame 2 slides to the left, and are housed inside the first frame 2 when the first frame 2 slides to the right. The first guide portion 6 and the second guide portion 7 each have a free end 61 and 71 at one end, respectively. The portions 62 and 72 that are pulled out from inside the first frame 2 maintain a straight line in the left-right direction and extend in a straight line between the lower and upper ends of the first frame 2 and the second frame 3, which are a pair of frames, respectively. In addition, the screen device SD includes a tension member 8 that is housed inside the first frame 2 and connects the free ends 61 and 71 of the first guide portion 6 and the second guide portion 7. The tension member 8 forms a non-intersecting loop and is arranged in the vertical direction.

[0029] Reference Figure 2 A first guide portion 6 is formed by connecting multiple first guide units 63. Each first guide unit 63 includes: a pair of side walls 63a, 63a arranged opposite each other in the Y-axis direction; and a bottom wall 63b connecting the two side walls 63a, 63a. In the first guide portion 6, one of the two adjacent first guide units 63, 63a is pivotally supported on the other first guide unit 63. Through this pivot support, the first guide portion 6 maintains straightness in the left-right direction and bends upward. In addition, at the upper left end of the side walls 63a, 63a of each first guide unit 63, corresponding to the upper end of the first guide portion 6 pulled out from the inside of the first frame 2, a pair of first pins 63c, 63c are provided facing outward in the opposite direction of the side walls 63a, 63a, and a pair of first openings 63d, 63d are provided at the upper right end.

[0030] Specifically, each of the sidewalls 63a of the first guide unit 63 and the periphery of each first pin 63c is provided with a first recess 63a1 that is recessed inward in the opposite direction of the sidewalls 63a, 63a. The length of each first pin 63c is the same as the amount of recess in the first recess 63a1, and the outer diameter of each first pin 63c and the inner diameter of each first opening 63d are such that each first pin 63c can be fitted into each first opening 63d with clearance. In addition, on each sidewall 63a, a first defect 63a2 is formed by cutting the periphery of each first opening 63d while retaining the upper edge of each sidewall 63a, and the upper edge is formed into a protrusion 63e extending to the right. Furthermore, a raised hill 63f is provided at the lower right end of the first recess 63a1. Furthermore, at the left end of each sidewall 63a, a second recess 63a3 is formed, similar to the first recess 63a1, recessed inward in the opposing direction of the two sidewalls 63a, 63a. Moreover, in each first guide unit 63, the bottom wall 63b is positioned corresponding to the lower end of each of the second recesses 63a3 on the two sidewalls 63a, 63a, and has a length extending from the left end of the second recess 63a3 to below the left end of the first defect 63a2.

[0031] In the first guide section 6, two adjacent first guide units 63, 63 are connected by inserting the inner sides of the opposing direction of the side walls 63a, 63a of the right end of one first guide unit 63 into the left ends of the side walls 63a, 63a of the other first guide unit 63, and by fitting the first pins 63c of the other first guide unit 63 into the first openings 63d of the first guide unit 63 with clearance. At this time, the two first pins 63c, 63c form a pivot. The first guide section 6 is formed by repeatedly performing such connection. The pivoting range of the two adjacent first guide units 63, 63 is as follows: starting from the position where the right end of the lower end of the side walls 63a, 63a of one first guide unit 63 contacts the left end of the lower end of the side walls 63a, 63a of the other first guide unit 63, and ending at the position where each protrusion 63e of the side walls 63a, 63a of one first guide unit 63 contacts each hill 63f of each first recess 63a1 formed on the side walls 63a, 63a of the other first guide unit 63. The pivoting range of each first guide unit 63 is the same, and the pivoting of each first guide unit 63 within the aforementioned pivoting range is as follows: Figure 1 As shown, when the first guide part 6 is housed inside the first frame 2, it bends toward the upper end of the first frame 2, and when it is pulled out from inside the first frame 2, it returns to its original state toward the right.

[0032] In the first guide section 6, the pivot is located at the upper end of the first guide unit 63. Therefore, the pivot is configured to extend upwards from the lower end of the opening where the screen device SD is installed. As a result, the pivot is less susceptible to the effects of dust, sand, dirt, etc., which can easily accumulate at the lower end of the opening. Combined with the smooth bending of the first guide section 6, the user can easily and stably perform the closing operation of the first frame 2.

[0033] Furthermore, on each of the two side walls 63a, 63a of the first guide unit 63, a recess 63g is provided, extending in the same direction as the portion 62 of the first guide portion 6 that is pulled out from the interior of the first frame 2 and extends in the left-right direction, and recessed inward in the opposite direction. A second recess 63a3 is located at the left end of the two side walls 63a, 63a where the recess 63g is provided, and is recessed inward in the opposite direction of the two side walls 63a, 63a compared to the recess 63g. Additionally, at the right end of each side wall 63a where the recess 63g is provided, the inner surface in the opposite direction is cut to form a second defect 63a4.

[0034] When the first guide portion 6 is pulled out from the interior of the first frame 2, and each of the first guide units 63 pivots, the second defect portion 63a4 of the pivoting first guide unit 63 coincides with the second recess portion 63a3 of the adjacent first guide unit 63 that has finished pivoting. Through this coincidence, and the contact between the right end of the lower end of the two side walls 63a, 63a of the pivoting first guide unit 63 and the left end of the two side walls 63a, 63a of the first guide unit 63 that has finished pivoting, the straightness of the portion 62 of the first guide portion 6 pulled out from the interior of the first frame 2 is maintained.

[0035] return Figure 1The right end of the first guide section 6 is fixed to the lower end of the second frame 3, and the right end of the first guide section 6 is a fixed end. Furthermore, the free end 61 of the first guide section 6 is always housed inside the first frame 2. Specifically, the free end 61 is located at the upper end of the adjuster 9, which moves vertically inside the first frame 2. The adjuster 9 is connected to the first guide unit 63 located at the upper end when the first guide section 6 is housed inside the first frame 2. A block-shaped hammer 91, which is longer vertically, is mounted on the adjuster 9. When the weight of the hammer 91 acts on the portion of the first guide section 6 housed inside the first frame 2, causing the first frame 2 to slide to the left, the spring force of the coil spring 31a built into the roller tube 31 is overcome, assisting in smoothly pulling the first guide section 6 out to the right from inside the first frame 2, providing a sense of ease and stability for the user's closing operation. Furthermore, the gravity acting on the hammer 91, when causing the first frame 2 to slide to the right and the screen 1 to be housed inside the second frame 3, provides appropriate resistance to the first guide 6 as it is housed inside the first frame 2. This resistance prevents the screen 1 from rapidly winding around the outer periphery of the roller tube 31 due to the release of the elastic force stored in the helical spring 31a.

[0036] At the lower end of frame 1, and in Figure 1 A pair of opposing inner surfaces (not shown) along the Y-axis are provided with curved protrusions 10 that bend at a predetermined curvature. The curved protrusions 10 guide the retraction and extraction of the first guide portion 6 relative to the interior of the first frame 2 by inserting into the recesses 63g of each of the first guide units 63. That is, the curved protrusions 10 bend at a predetermined curvature that allows the first guide portion 6 to bend smoothly upwards within the first frame 2 and to return to the right side within the first frame 2. Therefore, smoother retraction and extraction of the first guide portion 6 relative to the interior of the first frame 2 can be achieved.

[0037] In the screen device SD, when the first guide portion 6 is pulled out from the inside of the lower end of the first frame 2 to the right as the first frame 2 slides to the left, the lower end of the screen 1 is inserted between the two side walls 63a, 63a of each of the first guide units 63 of the pulled-out portion 62 of the first guide portion 6.

[0038] Furthermore, each of the first guide units 63 can be a one-piece molded product made of rigid resin. Considering weight reduction, the screen 1 can be made of fabric, mesh, or the like made of woven resin fibers. Additionally, the curved protrusions 10 can be formed of a material that prevents the first guide units 63 from wearing down even when repeatedly inserted into their recesses 63g.

[0039] Reference Figure 3(a) and (b), the second guide portion 7 is formed by connecting multiple second guide units 73. Each second guide unit 73 includes: a pair of sidewalls 73a, 73a disposed opposite each other in the Y-axis direction; and an upper wall 73b connecting the two sidewalls 73a, 73a. The vertical length of the two sidewalls 73a, 73a of each second guide unit 73 is shorter than [missing information]. Figure 2 The vertical lengths of the two side walls 63a, 63a of each of the first guide units 63 shown.

[0040] In the second guide portion 7, one of the two adjacent second guide units 73, 73 is pivotally supported by the other second guide unit 73. This pivotal support maintains the straightness of the second guide portion 7 in the left-right direction and causes it to curve downwards. Specifically, a recess 73a1 is formed in the left half of each side wall 73a from the center to the left end of each second guide unit 73, recessed inwards in the opposite direction of the side walls 73a, 73a. The left end of each recess 73a1 is formed in an arc shape, and the right end is formed in a semi-circular shape. Furthermore, a pair of second pins 73c, 73c are provided in the center of each recess 73a1, facing outwards in the opposite direction of the side walls 73a, 73a. The length of each second pin 73c is the same as the amount of recess in the recess 73a1. Furthermore, in each recess 73a1, a defect 73d is formed by cutting the portion from each second pin 73c to the left end and the portion from each second pin 73c to the lower end. The defect 73d has: one end face 73d1 extending linearly to the left; and another end face 73d2 extending linearly downward.

[0041] Furthermore, in each of the second guide units 73, a pair of second openings 73e, 73e extending through the Y-axis are formed in the right half of the right side wall 73a, extending from the center to the right end. The inner diameter of each second opening 73e is such that each second pin 73c can be fitted into the opening 73e with clearance. In addition, on the inner side of the opposing direction of each of the two side walls 73a, 73a of each of the second guide units 73, a protrusion 73f is provided adjacent to each second opening 73e. In each protrusion 73f, the upper surface 73f1 is a plane extending linearly to the right, and the lower surface 73f2 is an inclined surface inclined relative to the upper surface 73f2. The inclination angle of the lower surface 73f2 relative to the upper surface 73f1 can be, for example, about 30°.

[0042] In the second guide section 7, two adjacent second guide units 73, 73 are connected by inserting the inner sides of the opposing direction of the side walls 73a, 73a of the right half of one second guide unit 73 into the left half of the side walls 73a, 73a of the other second guide unit 73, and by fitting the second pins 73c of the other second guide unit 73 into the second openings 73e of the first second guide unit 73 with clearance. At this time, the two second pins 73c, 73c form a pivot. The second guide section 7 is formed by repeatedly performing such connection. The pivoting range of the two adjacent second guide units 73, 73 is as follows: starting from the position where the upper surface 73f1 of the protrusion 73f of one second guide unit 73 contacts one end face 73d1 of the defect 73d of the other second guide unit 73, and ending at the position where the lower surface 73f2 of the protrusion 73f contacts the other end face 73d2 of the defect 73d (for example, approximately 60°). The pivoting range of each second guide unit 73 is the same. Through the pivoting of each second guide unit 73 within the aforementioned pivoting range, such as... Figure 1 As shown, when the second guide portion 7 is housed inside the first frame 2, it bends toward the lower end of the first frame 2. When it is pulled out from inside the first frame 2, it returns to its original state to the right and the pulled-out portion 72 maintains a straight line.

[0043] The right end of the second guide portion 7, like the right end of the first guide portion 6, is fixed to the lower end of the second frame 3 as a fixed end. Furthermore, the free end 71 of the second guide portion 7 is always housed inside the first frame 2. Specifically, the free end 71 is located at the lower end of the connector 11, which moves vertically within the first frame 2.

[0044] Furthermore, in the screen device SD, the first guide portion 6 and the second guide portion 7, housed inside the first frame 2, are housed in different areas within the first frame 2. Specifically, on a pair of opposing inner surfaces along the Y-axis of the first frame 2, except for the upper and lower ends of the first frame 2, guide portions 21 extending along the long side of the first frame 2 and protruding inwards in opposing directions of the two inner surfaces are provided. Through the two guide portions 21, the interior of the first frame 2 is divided into a first storage portion 22 for housing the first guide portion 6 and a second storage portion 23 for housing the second guide portion 7. The first storage portion 22 is located on one side (left side) of the interior of the first frame 2 along the X-axis, and the second storage portion 23 is located on the other side (right side) of the interior of the first frame 2 along the X-axis. The left end of the first storage portion 22, i.e., the left end of the first frame 2, is an open end. This open end can be closed by a cover (not shown).

[0045] In this way, by dividing the storage areas of the first guide portion 6 and the second guide portion 7 of the first frame 2 into a first storage portion 22 and a second storage portion 23, the first guide portion 6 and the second guide portion 7 stored inside the first frame 2 will not collide and can be staggered inside the first frame 2. Therefore, the total length of the first guide portion 6 and the second guide portion 7 can be set to a size corresponding to the left-right dimension of the opening of the screen device SD. In addition, each first guide unit 63 of the first guide portion 6 is less susceptible to the influence of dust, sand, dirt, etc. that easily accumulate at the lower end of the opening of the screen device SD, so the bottom wall 63b is positioned away from the lower guide rail 5 in the portion 62 pulled out from the first storage portion 22. Therefore, the vertical dimension of each first guide unit 63 of the first guide portion 6 is larger. Therefore, by being located on the left side inside the first frame 2, the first storage section 22 allows the first guide section 6 to have a larger curvature when being stored or pulled out relative to the first storage section 22, thereby enabling the first guide section 6 to be stored in the first storage section 22 and pulled out from the first storage section 22 more smoothly.

[0046] Furthermore, the protruding ends of the two guide pieces 21, 21 are arranged apart from each other in the Y-axis direction, and the tension member 8 can be inserted into both the first storage portion 22 and the second storage portion 23. In addition, the two guide pieces 21, 21 guide the raising and lowering of the adjuster 9 of the first guide portion 6, and the second guide unit 73, which is connected to the lower end of the second guide portion 7 when it is stored in the second storage portion 23, guides the raising and lowering of the connector 11, which forms the free end 71 of the second guide portion 7 and is longer in the vertical direction.

[0047] Furthermore, in the screen device SD, a curved guide portion 12 with a curved surface 121 that bends at a predetermined curvature is provided at the upper end of the second storage portion 23 of the first frame 2. The curved surface 121 of the curved guide portion 12 can contact the upper wall 73b of each second guide unit 73 forming the second guide portion 7. Through the contact between the curved surface 121 and the upper wall 73b of each second guide unit 73, the curved guide portion 12 causes each second guide unit 73 to pivot, causing the second guide portion 7 to bend downwards and return in the left-right direction, thereby smoothly realizing the storage and pulling out of the second guide portion 7 relative to the second storage portion 23 as the first frame 2 slides in the left-right direction. The predetermined curvature of the curved surface 121 can be appropriately set considering such bending and returning of the second guide portion 7.

[0048] Furthermore, in the screen device SD, pulleys and other direction-changing components 13 are provided at the upper and lower ends of the first storage section 22 of the first frame 2. By hooking the tension member 8 to each direction-changing component 13, each direction-changing component 13 causes the tension member 8 to change direction in the Z-axis direction and applies a specified tension to the tension member 8.

[0049] Reference Figure 4 (a) and (b), connector 11 includes: a recess 111, which is connected to a second guide unit 73, the second guide unit 73 being housed in... Figure 1 The lower end of the second guide portion 7 in the second storage portion 23 of the first frame 2 shown; and the protrusion 112, one end and the other end of the tension member 8 are both fixed to the protrusion 112, and the protrusion 112 is formed separately from the recess 111 in a manner that can be fastened to the recess 111.

[0050] The recess 111 has a pair of connecting pieces 111b facing each other in the Y-axis direction at its upper end. A third opening 111a is provided on the connecting piece 111b to allow the second pins 73c of the second guide unit 73 to be fitted with clearance. The recess 111 also has a fourth opening 111c for fastening the protrusion 112 in the left-right direction at its lower end. Furthermore, a hollow receiving portion 111d extending in the vertical direction and opening in the left-right direction is formed on the recess 111. The protrusion 112 can be received in the receiving portion 111d of the recess 111. A fixing piece 112b extends downward from its lower end on the protrusion 112, and a fifth opening 112a communicating with the fourth opening of the recess 111 is provided on the fixing piece 112b in the left-right direction. Additionally, the protrusion 112 has a pair of upwardly protruding claws 112c at its two ends in the Y-axis direction at its upper end. Furthermore, on the protrusion 112, a first slit 112d extending downward is formed at the upper end, and an elongated hole 112e extending from the upper end to the lower end is provided. Additionally, on the protrusion 112, a window hole 112f that is longer in the Y-axis direction is provided at the lower end, and a second slit 112g extending downward from the lower end of the window hole 112f is formed. Moreover, a pair of locking holes 111e are formed at the upper end of the receiving portion 111d of the recess 111, allowing each claw 112c of the protrusion 112 to engage.

[0051] When proceeding Figure 1During wiring operations, such as when a tension member 8, which utilizes a rope or similar material, is arranged inside the first frame 2 of the screen device SD, before the second guide 7 is housed in the second housing 23 of the first frame 2, each second pin 73c is pre-fitted into each third opening 111a with clearance, thereby connecting the recess 111 of the connector 11 to the second guide unit 73 located at the lower end when housed in the second housing 23. In this state, the second guide 7 is not housed in the second housing 23 of the first frame 2, but is pre-positioned on the outside. Then, wiring operations for the tension member 8 are performed.

[0052] In the wiring operation of the tension member 8, firstly, in the first storage section 22 of the first frame 2, one end portion 81 of the tension member 8 is pulled into the first storage section 22 through the left end, i.e., the open end, of the first frame 2. After it is wrapped around the direction conversion member 13 located at the lower end from left to right, one end portion 81 of the tension member 8 is pulled outward from the first storage section 22 through the open end. Then, a knot 83 is formed at the front end of one end portion 81 of the tension member 8. Moreover, on the outside of the open end of the first frame 2, the knot 83 located at one end of the tension member 8 is inserted into the inside of the second slit 112g of the protrusion 112 of the connector 11 through the window hole 112f. The knot 83 is hooked and fixed at the lower end of the protrusion 112.

[0053] Next, the other end portion 82 of the tension member 8 is wrapped from left to right around the direction conversion member 13 located on the other side of the upper end of the first storage portion 22, and the other end portion 82 of the tension member 8 is pulled out from the first storage portion 22 through the open end toward the outside of the first frame 2. Then, a knot 84 is formed at the front end of the other end portion 82 of the tension member 8. Then, the other end portion 82 of the tension member 8 is wrapped from above around the portion to the right of the head of the first screw 14, and the knot 84 is inserted into the inside of the first slit 112d of the protrusion 112. The knot 84 is hooked and fixed at the lower end of the first slit 112d. In this state, the first screw 14 is inserted into the elongated hole 112e of the protrusion 112, and the first screw 14 is temporarily fastened to the square nut 15 disposed at the right end of the elongated hole 112e. With one end portion 81 and the other end portion 82 of the tension member 8 fixed to the protrusion 112 of the connector 11, a suitable portion located between one end portion 81 and the other end portion 82 of the tension member 8 is pressed to the left using a screw or the like to secure it. Figure 1 The free end 61 of the first guide section 6 shown.

[0054] Next, the second guide portion 7 of the recess 111 to which the connector 11 is connected is housed with the recess 111 located at the lower end. Figure 1The second receiving portion 23 of the first frame 2 is shown. Then, the protrusion 112 of the connector 11, which is in the above state, is inserted into the second receiving portion 23 through the open end of the first frame 2, passing through the first receiving portion 22. At this time, each claw 112c of the protrusion 112 is inserted and locked into each locking hole 111e of the receiving portion 111d of the recess 111, and the protrusion 112 is received in the receiving portion 111d of the recess 111. In this received state, the fourth opening 111c of the recess 111 communicates with the fifth opening 112a opened on the fixing piece 112b of the protrusion 112. Moreover, a second screw 16, such as a self-tapping screw, is tightened from the fifth opening 112a toward the fourth opening 111c, and the protrusion 112 is fastened to the recess 111. Then, the tension applied to the tension member 8 is adjusted by moving the first screw 14, which is temporarily fastened, up and down along the elongated hole 112e, and the first screw 14 is then formally fastened to the nut 15.

[0055] As described above, when wiring the tension member 8, with the direction conversion members 13, 13 respectively provided at the lower and upper ends of the first storage portion 22 of the first frame 2, both one end portion 81 and the other end portion 82 of the tension member 8 can be pulled outward from the left end, i.e., the open end, of the first frame 2. After being pulled out, both ends of the tension member 8 can be fixed to the protrusion 112 of the connector 11 that forms the free end 71 of the second guide portion 7 on the outside of the first frame 2. Furthermore, the protrusion 112 on which both ends of the tension member 8 are fixed can be stored and fixed to the receiving portion 111d of the recess 111 of the connector 11 fixed on the second guide unit 73, which is located at the lower end of the second guide portion 7 stored in the second storage portion 23. Therefore, it is easy to fix one end of the tension member 8 and the other end to the free end 71 of the second guide 7, and in general, it is easy to perform wiring work on the tension member 8. As a result, wiring work on the tension member 8 does not require special skills.

[0056] While the present invention has been described above using the embodiments described above, the present invention is not limited to the embodiments described above. For example, the screen device SD can be an automatic retraction device that utilizes the elastic force of the helical spring 31a as described in the above embodiments, or it can be an automatic opening and closing device that has a motor and utilizes the torque of the motor rotation when the screen 1 is unfolded and retracted, or it can be a manual opening and closing device that allows the screen 1 to be unfolded and retracted manually. In addition, the screen 1 can be a screen with multiple foldable pleats. Furthermore, in the case of the manual opening and closing screen device SD described above, the second frame 3 may not be fixed to the opening, but may slide freely in the left and right direction like the first frame 2, making the screen device SD a double-opening screen device. Moreover, the Z-axis direction is not limited to the vertical direction, as long as it is a direction orthogonal to the X-axis direction. For example, the screen device SD may also be provided in an opening that is inclined relative to the vertical plane. Furthermore, the receiving portion 111d of the recess 111 of the connector 11 does not necessarily need to be through in the X-axis direction, as long as at least one end is open in the X-axis direction. The receiving portion 111d of the recess 111 can be a recess that is recessed to the other side in the X-axis direction, as long as the protrusion 112 can be fixed to the recess 111 by the locking of each locking claw 112c and the thread tightening of the second screw 16. Furthermore, in the wiring operation of the tension member 8, as long as one end portion 81 and the other end portion 82 of the tension member 8 are fixed to the protrusion 112 of the connector 11 on the outside of the freely sliding frame such as the first frame 2, and the protrusion 112 with the one end portion 81 and the other end portion 82 of the tension member 8 are passed through the first storage portion 22 of the freely sliding frame and stored in the second storage portion 23, and are fastened to the recess 111 of the connector 11 which is connected to the second guide portion 7 stored in the second storage portion 23, the order of the wiring operation is not particularly limited.

[0057] Explanation of reference numerals in the attached figures

[0058] SD…screen assembly; 1…screen; 2…first frame; 22…first storage section; 23…second storage section; 3…second frame; 6…first guide section; 61…free end of the first guide section 6; 62…part of the first guide section 6 pulled out from the inside of the first frame 2; 63…first guide unit; 63a…side wall; 63b…bottom wall; 63c…first pin; 63d…first opening; 7…second guide section; 71…free end of the second guide section 7; 72…part of the second guide section 7 pulled out from the inside of the first frame 2; 73…second guide unit; 73a…side wall; 73b…top wall; 73c…second pin; 73e…second… 8… opening; 8… tension member; 81… one end of tension member 8; 82… the other end of tension member; 83, 84… dead knot; 11… connector; 111… recess; 111a… third opening; 111b… connecting piece; 111c… fourth opening; 111d… receiving part; 111e… locking hole; 112… protrusion; 112a… fifth opening; 112b… fixing piece; 112c… claw; 112d… first slit; 112e… elongated hole; 112f… window; 112g… second slit; 13… direction conversion member; 14… first screw; 15… nut (square nut); 16… second screw.

Claims

1. A wiring structure for a tension member of a screen device, the screen device comprising: a screen capable of being freely unfolded and retracted; a pair of frames arranged opposite each other in the X-axis direction, such that at least one of the frames can freely slide along the X-axis direction when the unfolding and retraction directions of the screen are set to the X-axis direction among three orthogonal axes, namely the X-axis, Y-axis, and Z-axis, and the pair of frames being composed of a first frame and a second frame that are longer and hollow in the Z-axis direction; a first guide portion and a second guide portion, wherein when the freely sliding frame slides to one side in the X-axis direction, the first guide portion and the second guide portion are pulled out from the interior of the freely sliding frame to the other side in the X-axis direction, and are retracted into the interior of the freely sliding frame when the freely sliding frame slides to the other side in the X-axis direction, and have a free end at one end; and a tension member, wherein the tension member is retracted into the freely sliding frame in a manner arranged along the Z-axis direction, and the free ends of the first guide portion and the second guide portion are connected to form a loop. One end of the screen along the X-axis is fixed to the first frame, and the other end is fixed to the second frame. A portion of the first guide, which can be pulled out from the inside of the freely sliding frame, extends in a straight line along the X-axis between the two ends of the frame along the Z-axis. Similarly, a portion of the second guide, which can be pulled out from the inside of the freely sliding frame, extends in a straight line along the X-axis between the two ends of the frame along the Z-axis. The first guide section is formed by connecting multiple first guide units. Each first guide unit includes a pair of first sidewalls disposed opposite each other in the Y-axis direction and a bottom wall connecting the two first sidewalls. In the first guide section, one of two adjacent first guide units is pivotally supported by the other first guide unit. Through this pivotal support, the first guide section bends to the other side in the Z-axis direction while maintaining straightness in the X-axis direction. The Z-axis end of the unfolded screen is inserted between the two first sidewalls of each first guide unit in the portion of the first guide section that is pulled out from the interior of the freely sliding frame. A pair of first pins facing outwards in the opposite direction are provided at one end of the two first sidewalls of each first guide unit in the X-axis direction, and a pair of first openings are provided at the other end in the X-axis direction. Two adjacent first guide units are connected by fitting the first pins of the other first guide unit into the first openings of one first guide unit in a manner with clearance. The two first pins form a pivot, and each first guide unit can pivot freely. The second guide section is formed by connecting multiple second guide units. Each second guide unit includes: a pair of second sidewalls, which are arranged opposite each other in the Y-axis direction and whose length in the Z-axis direction is shorter than that of the first sidewall of the first guide unit; and an upper wall that connects the two second sidewalls on the other side in the Z-axis direction. In the second guide section, one of two adjacent second guide units is pivotally supported by the other second guide unit. Through this pivotal support, the second guide section bends towards the Z-axis direction while maintaining straightness in the X-axis direction. The other end of the unfolded screen in the Z-axis direction is inserted between the two second sidewalls of each second guide unit in the portion of the second guide section that is pulled out from the interior of the freely sliding frame. A pair of second pins facing outwards in the opposite direction are provided at one end of the two second sidewalls of each second guide unit in the X-axis direction, and a pair of second openings are provided at the other end in the X-axis direction. Two adjacent second guide units are connected by fitting the second pins of the other second guide unit into the second openings of one second guide unit in a manner with clearance. The two second pins form a pivot, and each second guide unit can pivot freely. The interior of the freely sliding frame is divided into a first storage section that houses the first guide portion on one side in the X-axis direction, and a second storage section that houses the second guide portion on the other side in the X-axis direction. Both the first and second storage sections allow the tension member to be inserted. At one end of the first storage section of the freely sliding frame in the Z-axis direction and at the other end in the Z-axis direction, there are direction conversion components for the tension component to hook onto and for the tension component to change direction in the Z-axis direction. Its features are, A connector that connects to a second guide unit located in the second storage section of a frame that can slide freely, and is longer in the Z-axis direction, forms the free end of the second guide. The connector has: a recess having a pair of connecting tabs facing each other in the Y-axis direction at one end in the Z-axis direction, the pair of connecting tabs having a third opening for fitting a second pin of a second guide unit located at one end in the Z-axis direction in the second receiving portion with clearance; the recess having a fourth opening for fastening at one end in the Z-axis direction along the X-axis direction, and having a hollow receiving portion extending in the Z-axis direction and open at least one end in the X-axis direction; and a protrusion formed as a separate part from the recess, capable of being fixed to the receiving portion of the recess, and having a fixing tab extending from one end in the Z-axis direction towards one side in the Z-axis direction, the fixing tab having a fifth opening in the X-axis direction that communicates with the fourth opening of the recess, and fixing one end and the other end of the tension member. The connector's protrusion has a pair of claws protruding towards the other side of the Z-axis at both ends in the Y-axis direction, located at the other end in the Z-axis direction. A first slit extending towards one side of the Z-axis direction is formed on the connector's protrusion at the other end in the Z-axis direction, and an elongated hole extending from the other end in the Z-axis direction towards one end in the Z-axis direction is formed. Furthermore, a window is provided at one end in the Z-axis direction, and a second slit extending from one end of the window in the Z-axis direction towards one end of the protrusion in the Z-axis direction is formed. At the other end of the receiving portion of the connector's recess in the Z-axis direction, a pair of locking holes are formed for the claws of the connector's protrusion to engage. With the tension member in the first storage section of the freely sliding frame fixed to the free end of the first guide section, one end portion of the tension member hooked onto one direction conversion member located at one end of the freely sliding frame in the Z-axis direction, and the other end portion of the tension member hooked onto the other direction conversion member located at the other end of the freely sliding frame in the Z-axis direction, are pulled outward from one end of the first storage section of the freely sliding frame in the X-axis direction. A knot is formed at the front end of both the one end portion and the other end portion of the tension member. The knot at one end portion of the tension member passes through the window of the connector protrusion and inserts into the interior of the second slit, hooking onto one end of the protrusion in the Z-axis direction and being fixed. The other end portion of the tension member wraps around the head of the first screw in the X-axis direction from the other side of the Z-axis direction. The dead knot on the other side of the end is inserted into the interior of the first slit of the protrusion and hooked onto the other end of the first slit in the Z-axis direction and fixed thereon. The first screw is inserted into the elongated hole and temporarily fastened to the nut disposed on the part protruding from the elongated hole to the other side of the protrusion in the X-axis direction. The protrusion passes through the first receiving part of the freely sliding frame and is inserted into the second receiving part. Each claw of the protrusion is received in the second receiving part and inserted into and locked in the locking holes of the receiving part of the recess of the connector connected to the second guide unit located at one end in the Z-axis direction. The protrusion is received in the receiving part of the recess. In the state where the protrusion is received in the receiving part of the recess, the fourth opening of the recess communicates with the fifth opening of the protrusion. The second screw is tightened from the fifth opening toward the fourth opening, and the protrusion is fastened to the recess. The first screw is moved along the elongated hole in the Z-axis direction to adjust the tension applied to the tension member, and the first screw is finally fixed to the nut.

Images