Magnetic handle structure of three-glass double-cavity hollow glass with built-in shutter

Abstract

The utility model relates to built-in louver hollow glass handle technical field discloses a kind of magnetic attraction handle structure of three glass two cavity built-in louver hollow glass, including indoor handle, intermediate handle and internal handle, the top of the internal handle is provided with wire clamping component, the rear side of indoor handle, intermediate handle and internal handle is provided with linkage mechanism, the inside of linkage mechanism is provided with quick mounting mechanism;The linkage mechanism includes T-shaped rod, the left side of T-shaped rod is fixedly connected in the outer wall right side of indoor handle, the rear side of the outer wall of indoor handle is provided with two installation grooves one, the inner wall of two The installation grooves one is magnetically connected with magnet one with fixed connection. In the utility model, through the cooperation of T-shaped rod of indoor handle and guide rail, the mutual attraction of magnet between each handle, and the cooperation of wire clamping component connection louver window rope cable and other structures, the problem that angle of louver window cannot be quickly and accurately adjusted, convenience and efficiency are low in prior art is improved.

Description

Technical Field

[0001] This utility model relates to the field of handle technology for insulated glass with built-in louvers, and more particularly to a magnetic handle structure for a triple-glazed, double-cavity insulated glass with built-in louvers. Background Technology

[0002] Triple-glazed, double-cavity, insulated glass with built-in blinds is a type of architectural glass material with highly efficient heat and sound insulation properties. It consists of three layers of glass, forming two air chambers, and a louvered structure is installed inside the glass. In order to adjust the angle of the internal louvers to control light and privacy without compromising the airtightness of the glass, a magnetic handle was developed.

[0003] The magnetic handle uses magnetic force to allow operators to operate the internal blinds from the outside of the glass, maintaining the airtightness of the glass cavity and avoiding sealing risks caused by mechanical transmission components penetrating the glass.

[0004] Existing magnetic handle structures mainly consist of an inner handle and a central handle. Their working principle involves installing magnets on these two handles. By moving the central handle, the magnetic interaction drives the central handle to move up and down, thereby adjusting the blinds. However, due to the large thickness of the triple-glazed double-cavity insulated glass, the distance between the central and central handles is relatively large. The magnetism generated by the magnets installed on the two handles is relatively weak at a distance. This results in a slow response speed of the central handle to the action of the central handle when adjusting the blinds, leading to a poor user experience. It is impossible to quickly and accurately adjust the blinds to the desired angle, reducing the convenience and efficiency of use. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a magnetic handle structure for triple-glazed, double-cavity, insulated glass with built-in blinds, aiming to improve the problem in the prior art that the blinds cannot be quickly and accurately adjusted to the desired angle, thus reducing the convenience and efficiency of use.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a magnetic handle structure for triple-glazed, double-cavity, insulated glass with built-in blinds, including an indoor handle, a middle handle and an inner handle, wherein a wire clamping assembly is provided on the top of the inner handle, and a linkage mechanism is provided on the rear side of the indoor handle, the middle handle and the inner handle, and a quick-installation mechanism is provided inside the linkage mechanism.

[0007] The linkage mechanism includes a T-shaped rod. The left side of the T-shaped rod is fixedly connected to the right side of the outer wall of the indoor handle. Two mounting slots are opened on the rear side of the outer wall of the indoor handle. Magnets are fixedly connected to the inner walls of the two mounting slots. Mounting slots are opened on the front side of the outer wall of the inner handle and the front and rear sides of the outer wall of the middle handle. Magnets are slidably connected to the inner walls of the multiple mounting slots. Reserved slots are opened on the front side of the outer wall of the inner handle and the front and rear sides of the outer wall of the middle handle. Rotating rods are provided on the inner walls of the multiple reserved slots. Rotating wheels are rotatably connected to the outer walls of the multiple rotating rods.

[0008] As a further description of the above technical solution:

[0009] The quick-installation mechanism includes multiple insert rods, each fixedly connected to the outer wall of a corresponding rotating rod. Slots are provided on the left and right sides of the inner walls of the multiple reserved grooves. The insert rods are slidably connected to their corresponding slots. Multiple sliding grooves are provided on the rear side of the outer wall of the inner handle and the front and rear sides of the outer wall of the middle handle. Pressing plates are slidably connected to the inner walls of the multiple sliding grooves. Springs are fixedly connected to the opposite sides of the pressing plates, and each spring is fixedly connected to its corresponding sliding groove. Locking blocks are fixedly connected to adjacent sides of the pressing plates. Locking slots are provided on the opposite sides of the outer walls of the multiple insert rods, and the locking blocks engage with their corresponding locking slots.

[0010] As a further description of the above technical solution:

[0011] The wire clamping assembly includes a wire clamp, the bottom of which is fixedly connected to the top of the inner handle. The wire clamp has wire through holes on both the left and right sides of its inner wall. A clamping plate is slidably connected to the inner wall of the wire through hole on the right side. A screw is threadedly connected to the right front end of the outer wall of the wire clamp, and the rear end of the screw is rotatably connected to the front end of the clamping plate.

[0012] As a further description of the above technical solution:

[0013] Anti-slip pads are fixedly connected to the left and right sides of the inner walls of the multiple mounting slots, and multiple anti-slip grooves are opened on the adjacent side of the multiple anti-slip pads.

[0014] As a further description of the above technical solution:

[0015] Each of the multiple insertion rods has a guide block fixedly connected to its top, and each of the multiple slots has a guide groove on its inner wall top. The multiple guide blocks are slidably connected to the corresponding guide grooves.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this utility model, the T-shaped rod of the indoor handle cooperates with the guide rail, the magnets between each handle attract each other, and the cable clamping assembly connects the blind rope, etc., to achieve efficient adjustment of the blinds. In particular, the rotating wheel reduces the friction of the handle movement, making the middle handle and the inner handle move smoothly. This improves the problems of the inability to quickly and accurately adjust the blind angle, and the low convenience and efficiency in the prior art, allowing users to easily adjust the blinds to the desired angle.

[0018] 2. In this utility model, during installation, the insert rod is inserted into the slot and squeezes the locking block, causing the spring to store energy. When the locking slot is aligned with the locking block, the spring releases energy and pushes the locking block into the slot. This design improves the problems of complex and time-consuming traditional installation methods, greatly improves the installation efficiency of the rotating wheel, ensures the stability of the rotating wheel during use, and provides a guarantee for the smooth adjustment of the louvers. Attached Figure Description

[0019] Figure 1 This is a perspective view of a magnetic handle structure for a triple-glazed, double-cavity, hollow glass unit with built-in blinds, as proposed in this utility model.

[0020] Figure 2 This is a front view of the magnetic handle structure of a triple-glazed, double-cavity, hollow glass unit with built-in blinds proposed in this utility model.

[0021] Figure 3 This is a partial structural breakdown diagram of a magnetic handle structure for a triple-glazed, double-cavity, hollow glass unit with built-in blinds, as proposed in this utility model.

[0022] Figure 4 A split view of the rotating wheel of a magnetic handle structure for a triple-glazed, double-cavity, insulated glass unit with built-in blinds, as proposed in this utility model;

[0023] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 This is a partial structural exploded view of the quick-installation mechanism of a magnetic handle structure for a triple-glazed, double-cavity, hollow glass unit with built-in blinds, as proposed in this utility model.

[0025] Figure 7 A partial cross-sectional view of the internal handle of a magnetic handle structure for a triple-glazed, double-cavity, hollow glass unit with built-in blinds, as proposed in this utility model.

[0026] Figure 8 This is an exploded view of the clamping assembly of a magnetic handle structure for a triple-glazed, double-cavity, hollow glass unit with built-in blinds, as proposed in this utility model.

[0027] Figure 9 This is an exploded view of the anti-slip pad of a magnetic handle structure for a triple-glazed, double-cavity, hollow glass unit with built-in blinds, as proposed in this utility model.

[0028] Legend:

[0029] 1. Indoor handle; 2. Linkage mechanism; 201. T-shaped rod; 202. Mounting slot one; 203. Magnet one; 204. Mounting slot two; 205. Magnet two; 206. Reserved slot; 207. Rotating rod; 208. Rotating wheel; 3. Quick-installation mechanism; 301. Insert rod; 302. Slot; 303. Sliding groove; 304. Press plate; 305. Spring; 306. Locking block; 307. Locking groove; 4. Middle handle; 5. Inner handle; 6. Wire clamping assembly; 601. Wire clamp; 602. Wire threading port; 603. Clamping plate; 604. Screw; 7. Anti-slip pad; 8. Anti-slip groove; 9. Guide block; 10. Guide groove. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 3 , Figure 4 and Figure 5 This utility model provides an embodiment of a magnetic handle structure for a triple-glazed, double-cavity, insulated glass unit with built-in blinds. The structure includes an interior handle 1, a middle handle 4, and an inner handle 5. A wire clamping assembly 6 is located at the top of the inner handle 5. The interior handle 1, located on the interior side, provides the user with a direct point of force for operation. The middle handle 4 serves as a transition connecting the interior handle 1 and the inner handle 5. The inner handle 5 is directly connected to the blinds and is responsible for the actual adjustment of the blinds. A linkage mechanism 2 is located at the rear of the interior handle 1, middle handle 4, and inner handle 5 to achieve coordinated action among the three handles, ensuring that the operation of the interior handle 1 is accurately transmitted to the inner handle 5, thereby achieving effective adjustment of the blinds. A quick-installation mechanism 3 is located inside the linkage mechanism 2, facilitating rapid assembly of the components, improving installation efficiency, and reducing installation time and labor costs.

[0032] The linkage mechanism 2 includes a T-shaped rod 201. The left side of the T-shaped rod 201 is fixedly connected to the right side of the outer wall of the indoor handle 1, allowing the indoor handle 1 to stably cooperate with the external indoor handle 1 guide rail, ensuring the stability and smoothness of the indoor handle 1 during operation. Two mounting slots 202 are provided on the rear side of the outer wall of the indoor handle 1 to provide mounting positions for magnets 203, ensuring that magnets 203 can be securely mounted on the indoor handle 1. Magnets 203 are fixedly connected to the inner walls of both mounting slots 202, and through magnetic action, cooperate with magnets on other components to achieve non-contact linkage between the handles. Mounting slots 204 are provided on the front side of the outer wall of the inner handle 5 and the front and rear sides of the outer wall of the middle handle 4 for mounting magnets 205, allowing magnets 205 to slide to a certain extent to adapt to different working conditions. Magnets 205 are slidably connected to the inner walls of multiple mounting slots 204, attracting magnets 203, thereby achieving magnetic linkage between the indoor handle 1, the middle handle 4, and the inner handle 5. Both the front side of the outer wall of the inner handle 5 and the front and rear sides of the outer wall of the middle handle 4 are provided with reserved grooves 206 to provide installation space for the rotating rod 207 and ensure that the rotating rod 207 can be stably installed in them. The inner walls of the multiple reserved grooves 206 are provided with rotating rods 207, providing support and a base for the rotating wheel 208 to rotate, ensuring that the rotating wheel 208 can rotate normally. The outer walls of the multiple rotating rods 207 are rotatably connected to the rotating wheel 208, which reduces friction during the movement of the handle, making the movement of the middle handle 4 and the inner handle 5 smoother and improving the efficiency of the entire magnetic handle structure for adjusting the blinds.

[0033] Specifically, the indoor handle 1 serves as the operating end, and its right outer wall is fixed with a T-shaped rod 201 for engaging with the guide rail of the indoor handle 1, allowing the indoor handle 1 to slide stably. The magnet 203 in the mounting slot 202 on the rear side of the indoor handle 1 magnetically attracts the magnet 205 in the mounting slot 204 on the front side of the intermediate handle 4, thus moving the intermediate handle 4. The intermediate handle 4 acts as a transition link; the magnets 205 in the mounting slots 204 on its front and rear sides are attracted not only by the magnet 203 of the indoor handle 1 but also by the magnet 205 in the mounting slot 204 on the front side of the inner handle 5, thereby moving the inner handle 5. The rotating rod 207 and rotating wheel 208 in the reserved slot 206 on the intermediate handle 4 reduce its own friction and ensure smooth movement. The inner handle 5 directly affects the adjustment of the louvers; the magnet 205 in the mounting slot 204 on its front side attracts the intermediate handle 4 to achieve linkage, and the rotating rod 207 and rotating wheel 208 in the reserved slot 206 also reduce movement resistance. The entire linkage mechanism 2, through the cooperation of its various components, utilizes magnetic linkage and the drag reduction of the rotating wheel 208 to solve the problem of inconvenient adjustment in the existing technology, thereby improving the convenience and efficiency of louver adjustment.

[0034] Reference Figure 1 , Figure 6 and Figure 7 The quick-installation mechanism 3 includes multiple insertion rods 301 for quick installation in conjunction with other components. Each insertion rod 301 is fixedly connected to the outer wall of its corresponding rotating rod 207, forming a single unit with the rotating rod 207 for coordinated operation during subsequent installation. Slots 302 are provided on the left and right sides of the inner walls of multiple pre-drilled slots 206, providing space and guidance for the insertion rods 301 to ensure accurate installation. Each insertion rod 301 is slidably connected to its corresponding slot 302, allowing for smooth insertion and easy position adjustment during installation. Multiple sliding grooves 303 are provided on the rear outer wall of the inner handle 5 and the front and rear outer walls of the middle handle 4, providing a sliding track for the pressing plate 304, enabling it to move in a specific direction. The inner walls of the sliding grooves 303 are slidably connected to the pressing plate 304, allowing for the fixing or loosening of the insertion rods 301 through their movement. Multiple pressing plates 304 are each fixedly connected to a spring 305 on their opposite sides, providing elastic force to the pressing plates 304 so that they can return to their initial or specific positions after being subjected to external force. Each spring 305 is fixedly connected to a corresponding sliding groove 303, ensuring the stability of the spring 305 and enabling it to reliably provide elastic support to the pressing plates 304. Each adjacent side of the multiple pressing plates 304 is fixedly connected to a locking block 306. Each opposite side of the outer wall of multiple insertion rods 301 has a locking groove 307. Each locking block 306 engages with a corresponding locking groove 307. The locking groove 307 and the locking block 306 are mutually compatible; when the locking block 306 engages with the locking groove 307, the insertion rod 301 is fixed.

[0035] Specifically, the insertion rod 301 is fixed to the outer wall of the rotating rod 207 and slidably connected to the slot 302 on the inner wall of the reserved groove 206, providing installation positioning for the rotating rod 207 and the rotating wheel 208, enabling them to quickly align and initially fix in the installation position. The sliding grooves 303 on the inner handle 5 and the middle handle 4 provide sliding space for the pressing plate 304. The spring 305 connected to one side of the pressing plate 304 can store elastic potential energy when compressed and release it at the appropriate time. The locking block 306 fixed to the other side of the pressing plate 304 cooperates with the locking groove 307 on the outer wall of the insertion rod 301. During installation, the insert rod 301 is inserted into the slot 302, and the pressing block 306 compresses the pressing plate 304 to compress the spring 305. When the slot 307 is aligned with the pressing block 306, the spring 305 pushes the pressing plate 304, allowing the pressing block 306 to engage with the slot 307, thus achieving quick and stable installation of the rotating wheel 208 and the rotating rod 207, facilitating the overall assembly and use of the quick-installation mechanism 3.

[0036] Reference Figure 2 , Figure 3 and Figure 6 The cable clamp assembly 6 includes a cable clamp 601, which provides a base carrier for fixing the blinds' cables. The bottom of the cable clamp 601 is fixedly connected to the top of the internal handle 5. Both the left and right sides of the inner wall of the cable clamp 601 have cable entry holes 602 for the cable to pass through, providing a channel for cable fixing and positioning. A clamping plate 603 is slidably connected to the inner wall of the right cable entry hole 602, allowing for clamping or loosening of the cable passing through the cable entry hole 602, thereby controlling the cable's fixing state. A screw 604 is threadedly connected to the right front end of the outer wall of the cable clamp 601, allowing precise control of the movement of the clamping plate 603 by rotating the screw 604. The rear end of the screw 604 is rotatably connected to the front end of the clamping plate 603.

[0037] Specifically, the wire clamp 601 is fixed to the top of the internal handle 5, providing a carrier for securing the cable. The cable pass-through port 602 is used to pass through the louver cable. Turning the screw 604 pushes the clamp plate 603 to move within the cable pass-through port 602, thereby clamping or releasing the cable, achieving the fixation and adjustment of the louver cable, and ensuring that the internal handle 5 can effectively control the louvers.

[0038] Reference Figure 2 , Figure 8 and Figure 9 Multiple mounting slots 204 have anti-slip pads 7 fixedly connected to their inner walls on both sides to increase friction with the parts installed in the mounting slots 204. Multiple anti-slip grooves 8 are provided on the adjacent side of the multiple anti-slip pads 7 to further enhance the anti-slip effect of the anti-slip pads 7, making it less likely for the parts installed in the mounting slots 204 to slide. Multiple insertion rods 301 have guide blocks 9 fixedly connected to their tops. Multiple slots 302 have guide grooves 10 provided on the top of their inner walls, which cooperate with the guide blocks 9 to ensure that the insertion rods 301 can be accurately inserted into the slots 302 in a predetermined direction. Multiple guide blocks 9 are slidably connected to the corresponding guide grooves 10, which not only ensures the smoothness of the insertion process of the insertion rods 301, but also positions the insertion rods 301 during insertion, making the connection between the insertion rods 301 and the slots 302 more precise and stable.

[0039] Specifically, the anti-slip pad 7 and anti-slip groove 8 on the inner wall of the second slot 204 increase the friction with the second magnet 205 and prevent it from sliding. The guide block 9 at the top of the insertion rod 301 slides into the guide groove 10 at the top of the inner wall of the slot 302, guiding the insertion rod 301 into the slot 302, making the installation more precise and smooth, and ensuring that the connection of each component is stable and the operation is convenient.

[0040] Working Principle: Before use, installation preparation is required. Insert the T-shaped rod 201 on the indoor handle 1 into the guide rail of the indoor handle 1, ensuring the indoor handle 1 is securely installed and can move smoothly. Place the middle handle 4 between the indoor glass and the middle glass, and the inner handle 5 between the middle glass and the outdoor glass, laying out the necessary steps for subsequent linkage operations. Simultaneously, thread the cable from the louver through the threading port 602 on the cable clamp 601, and tighten the screw 604 to push the clamp plate 603 to clamp the cable, thus connecting the handle to the louver. During use, moving the indoor handle 1 causes the T-shaped rod 201 fixedly connected to its right side to move along with it. At this time, the magnet 203 in the mounting groove 202 on the rear side of the outer wall of the indoor handle 1, through magnetic attraction, drives the magnet 205 slidably connected in the mounting groove 204 on the front side of the middle handle 4, causing the middle handle 4 to move synchronously with the indoor handle 1. Because the magnet 205 in the mounting groove 204 on the rear side of the middle handle 4 attracts the magnet 205 in the mounting groove 204 on the front side of the inner handle 5, the movement of the middle handle 4 drives the movement of the inner handle 5. The up and down movement of the inner handle 5 can realize the raising, lowering and angle adjustment of the blinds. In addition, the rotating wheel 208 connected to the rotating rod 207 in the reserved groove 206 on the middle handle 4 and the inner handle 5 reduces the friction during the movement of the handles, making the movement of the middle handle 4 and the inner handle 5 smoother, allowing users to quickly and accurately adjust the blinds to the desired angle, greatly improving the convenience and efficiency of use;

[0041] The operation procedure for installing multiple rotating wheels 208 is as follows: First, align multiple insert rods 301 with the slots 302 opened on the left and right sides of the inner wall of the reserved groove 206. When inserting the insert rod 301 into the corresponding slot 302, the outer wall of the insert rod 301 will press the corresponding locking block 306. Since the locking block 306 is fixed on the pressing plate 304, after being pressed, the pressing plate 304 will move into the sliding groove 303, thereby pressing the spring 305. At this time, the spring 305 stores elastic potential energy. As the insert rod 301 continues to be inserted, when the locking groove 307 opened on the opposite side of the outer wall of the insert rod 301 aligns with the locking block 306, the previously compressed spring 305 begins to release elastic potential energy. Under the elastic force of the spring 305, the spring 305 pushes the pressing plate 304 closer to the insert rod 301, so that the locking block 306 can be smoothly locked into the corresponding locking groove 307. In this way, the quick fixing of the insert rod 301 and the rotating wheel 208 is completed.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A magnetic handle structure for a triple-glazed, double-cavity, insulated glass unit with built-in blinds, comprising an indoor handle (1), a middle handle (4), and an internal handle (5), characterized in that: The top of the inner handle (5) is provided with a wire clamping assembly (6), and the rear side of the indoor handle (1), the middle handle (4) and the inner handle (5) is provided with a linkage mechanism (2), and the interior of the linkage mechanism (2) is provided with a quick-installation mechanism (3). The linkage mechanism (2) includes a T-shaped rod (201). The left side of the T-shaped rod (201) is fixedly connected to the right side of the outer wall of the indoor handle (1). Two mounting slots (202) are opened on the rear side of the outer wall of the indoor handle (1). Magnets (203) are fixedly connected to the inner walls of the two mounting slots (202). Mounting slots (204) are opened on the front side of the outer wall of the inner handle (5) and the front and rear sides of the outer wall of the middle handle (4). Magnets (205) are slidably connected to the inner walls of the multiple mounting slots (204). Reserved slots (206) are opened on the front side of the outer wall of the inner handle (5) and the front and rear sides of the outer wall of the middle handle (4). Rotating rods (207) are provided on the inner walls of the multiple reserved slots (206). Rotating wheels (208) are rotatably connected to the outer walls of the multiple rotating rods (207).

2. The magnetic handle structure of a triple-glazed, double-cavity, insulated glass unit with built-in blinds according to claim 1, characterized in that: The quick-installation mechanism (3) includes multiple insert rods (301), which are fixedly connected to the outer wall of the corresponding rotating rod (207). The inner walls of the multiple reserved slots (206) are provided with slots (302) on both the left and right sides. The multiple insert rods (301) are slidably connected to the corresponding slots (302). The rear outer wall of the inner handle (5) and the front and rear outer walls of the middle handle (4) are provided with multiple sliding grooves (303). Each of the inner walls is slidably connected with a pressing plate (304), and each pressing plate (304) is fixedly connected with a spring (305) on the opposite side. Each spring (305) is fixedly connected to the corresponding sliding groove (303). Each pressing plate (304) is fixedly connected with a locking block (306) on the adjacent side. Each of the outer walls of the insert rods (301) is provided with a locking groove (307) on the opposite side. Each locking block (306) engages with the corresponding locking groove (307).

3. The magnetic handle structure of a triple-glazed, double-cavity, insulated glass unit with built-in blinds according to claim 1, characterized in that: The wire clamping assembly (6) includes a wire clamp (601), the bottom of which is fixedly connected to the top of the inner handle (5). The wire clamp (601) has wire through holes (602) on both the left and right sides of its inner wall. A clamping plate (603) is slidably connected to the inner wall of the wire through hole (602) on the right side. A screw (604) is threadedly connected to the right side of the front end of the outer wall of the wire clamp (601). The rear end of the screw (604) is rotatably connected to the front end of the clamping plate (603).

4. The magnetic handle structure of a triple-glazed, double-cavity, insulated glass unit with built-in blinds according to claim 1, characterized in that: Anti-slip pads (7) are fixedly connected to the left and right sides of the inner walls of the multiple mounting grooves (204), and multiple anti-slip grooves (8) are opened on the adjacent side of the multiple anti-slip pads (7).

5. The magnetic handle structure of a triple-glazed, double-cavity, insulated glass unit with built-in blinds according to claim 2, characterized in that: Each of the multiple insertion rods (301) has a guide block (9) fixedly connected to its top, and each of the multiple slots (302) has a guide groove (10) opened on its inner wall top. Each of the multiple guide blocks (9) is slidably connected to the corresponding guide groove (10).

Images