Clamping type fixing device and window sash anti-falling device

Abstract

The utility model provides a clamping type fixing device and a window sash anti-drop device, the clamping type fixing device comprises: an anti-drop seat, which comprises a first plate-shaped part and a rope drum, the first plate-shaped part is provided with a first locking hole, and the first locking hole penetrates through the upper surface and the lower surface of the first plate-shaped part; the clamping block comprises a second plate-shaped part, a second locking hole corresponding to the first locking hole in position is formed in the second plate-shaped part, and the second locking hole penetrates through the upper surface and the lower surface of the second plate-shaped part; and the movable connecting piece is used for assembling the second plate-shaped part below the first plate-shaped part, the first plate-shaped part and the second plate-shaped part are movably connected with the movable connecting piece, and the first plate-shaped part and the second plate-shaped part move relatively to enable the clamping type fixing device to be clamped in the C-shaped groove. According to the anti-falling device, the anti-falling seat and the clamping block cannot be separated all the time, and it is guaranteed that the clamping block cannot fall off or be lost.

Description

Technical Field

[0001] The utility model relates to the field of hardware building materials, and more specifically, to a clamping fixing device and a window sash anti-detachment device. Background Art

[0002] Existing anti-detachment devices for preventing doors and windows from falling generally adopt screw fixing and clamping fixing. Among them, screw fixing will damage the window profiles, and for clamping fixing, the clamping block is separated from the anti-detachment device during installation. After the clamping block is inserted into the window profile, clamping fixing installation is carried out. At this time, if not noticed, the clamping block is likely to fall off or be lost (especially when it is installed on the vertical door and window profiles), resulting in the inability to install the anti-detachment device. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a clamping fixing device and a window sash anti-detachment device for the problem that the clamping block of the existing clamping-fixed anti-detachment device is likely to fall off or be lost.

[0004] The technical solution of the utility model to solve the above technical problem is to provide a clamping fixing device for installing into the C-shaped groove of a window sash or window frame. The clamping fixing device includes:

[0005] An anti-detachment seat, including a first plate-shaped part and a rope barrel fixedly connected to the first plate-shaped part and used for assembling an anti-falling rope. The first plate-shaped part has a first locking hole, and the first locking hole penetrates the upper surface and the lower surface of the first plate-shaped part;

[0006] A clamping block, including a second plate-shaped part. The width of the second plate-shaped part is smaller than the width of the C-shaped groove, and the second plate-shaped part has a second locking hole corresponding to the position of the first locking hole. The second locking hole penetrates the upper surface and the lower surface of the second plate-shaped part;

[0007] A movable connecting piece for assembling the second plate-shaped part below the first plate-shaped part. The first plate-shaped part and the second plate-shaped part are respectively movably connected to the movable connecting piece, and the first plate-shaped part and the second plate-shaped part are clamped in the C-shaped groove by relative movement.

[0008] As a further improvement of the utility model, the first plate-shaped part has a first movable mounting hole, the second plate-shaped part has a second movable mounting hole, and the position of the second movable mounting hole corresponds to the position of the first movable mounting hole. The movable connecting piece passes through the first movable mounting hole and the second movable mounting hole to movably connect the anti-detachment seat and the clamping block.

[0009] As a further improvement of the present utility model, the movable connecting member is composed of a rivet passing through the first movable mounting hole and the second movable mounting hole. The rivet includes a head, a gear portion, and a columnar portion axially connected in sequence. And the movable connecting member is rotationally connected to the first plate-shaped portion by inserting the gear portion into the first movable mounting hole, and is rotationally connected to the second plate-shaped portion by inserting the columnar portion into the second movable mounting hole;

[0010] The radial dimension of the first movable mounting hole is greater than the radial dimension of the gear portion. The radial dimension of the second movable mounting hole is adapted to the radial dimension of the columnar portion. The edge of the first movable mounting hole has teeth meshing with the gear portion. And during the rotation of the rivet, the first plate-shaped portion is pushed to move relative to the second plate-shaped portion in the width direction by the cooperation of the gear portion and the teeth.

[0011] As a further improvement of the present utility model, the anti-detachment seat includes a convex foot located below the first plate-shaped portion and facing the first side edge in the width direction of the first plate-shaped portion. And when the clamping fixing device is placed in the C-shaped groove, both the convex foot and the second plate-shaped portion are located below the notch of the C-shaped groove; the clamping fixing device is clamped in the C-shaped groove by the convex foot and the edge of the second plate-shaped portion away from the convex foot.

[0012] As a further improvement of the present utility model, the axial dimension of the gear portion is greater than the thickness of the first plate-shaped portion, and the radial dimension of the gear portion is greater than the radial dimension of the second movable mounting hole; the anti-detachment seat includes two ear plates, and the two ear plates are respectively connected below the first plate-shaped portion and are respectively perpendicular to the length direction of the first plate-shaped portion. Each ear plate has one convex foot, and the convex foot includes a hook portion and an inclined surface located below the hook portion;

[0013] The second plate-shaped portion is located between the two ear plates. There are several convex heads at the side adjacent to the convex foot on the upper surface of the second plate-shaped portion. And when the clamping fixing device is placed in the C-shaped groove, the convex heads are located within the notch of the C-shaped groove.

[0014] As a further improvement of the present utility model, the rope drum is located at the first side edge in the width direction on the upper surface of the first plate-shaped portion and is arranged along the length direction of the first plate-shaped portion.

[0015] As a further improvement of the present utility model, the clamping fixing device includes a locking member, and the locking member passes through the first locking hole and the second locking hole to lock and fix the first plate-shaped portion and the second plate-shaped portion.

[0016] As a further improvement of the present utility model, the locking member is a screw, the first locking hole is formed by an oblong hole, the second locking hole is formed by a circular screw hole, and the long axis direction of the oblong hole is parallel to the width direction of the first plate-shaped part.

[0017] As a further improvement of the present utility model, the first plate-shaped part includes two first locking holes distributed along the length direction of the first plate-shaped part, and the first movable mounting hole is located between the two first locking holes;

[0018] The second plate-shaped part includes two second locking holes distributed along the length direction of the second plate-shaped part, and the second movable mounting hole is located between the two second locking holes.

[0019] The present utility model also provides a window sash anti-detachment device, which includes a first fixing component, a second fixing component and an anti-falling rope, and at least one of the first fixing component and the second fixing component is constituted by the above-mentioned clamping type fixing device.

[0020] The present utility model has the following beneficial effects: By the movable connecting piece being respectively movably connected with the anti-detachment seat and the clamping block, during the process of assembling the clamping type fixing device into the C-shaped groove of the window sash or window frame profile, the anti-detachment seat and the clamping block will never separate, ensuring that the clamping block will not fall off and be lost. Description of the Drawings

[0021] Figure 1 is an exploded structural schematic diagram of the clamping type fixing device provided by an embodiment of the present utility model.

[0022] Figure 2 is a sectional structural schematic diagram of the clamping type fixing device provided by an embodiment of the present utility model.

[0023] Figure 3 is a schematic diagram of the profile for assembling the clamping type fixing device provided by an embodiment of the present utility model.

[0024] Figure 4 is a schematic diagram of the clamping type fixing device provided by an embodiment of the present utility model being inserted into the C-shaped groove.

[0025] Figure 5 is a schematic diagram of the relative movement between the first plate-shaped part and the second plate-shaped part in the clamping type fixing device provided by an embodiment of the present utility model.

[0026] Figure 6 is a schematic diagram of the process of assembling the clamping type fixing device provided by an embodiment of the present utility model into the C-shaped groove.

[0027] Figure 7 is a schematic diagram of the window sash anti-detachment device provided by an embodiment of the present utility model.

[0028] 10 Anti - detachment base 11 First plate - shaped part

[0029] 111 First locking hole 112 First movable mounting hole

[0030] 1121 Tooth profile 12 Rope drum

[0031] 121 Rope - threading hole 13 Convex foot

[0032] 14 Ear plate 20 Clamping block

[0033] 21 Second plate - shaped part 211 Second locking hole

[0034] 212 Second movable mounting hole 22 Convex head

[0035] 30 Movable connecting piece 31 Head part

[0036] 32 Gear part 33 Columnar part

[0037] 40 Locking piece 50 Profile

[0038] 51 C - shaped groove 60 First fixing component

[0039] 70 Second fixing component 80 Anti - falling rope Detailed implementation manners

[0040] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0041] As Figure 1 shown, it is a schematic structural diagram of a clamping - type fixing device provided by an embodiment of the present utility model. This clamping - type fixing device can be applied to a window - sash anti - detachment device and can be installed into the C - shaped groove of a window sash or window frame profile as Figure 3 shown. The clamping - type fixing device of this embodiment includes an anti - detachment base 10, a clamping block 20 and a movable connecting piece 30. The above - mentioned anti - detachment base 10 and clamping block 20 can be respectively processed from metal materials such as aluminum alloy or sheet metal. The anti - detachment base 10 and the clamping block 20 are assembled together through the movable connecting piece 30. The assembled anti - detachment base 10 and clamping block 20 can move relative to each other and are assembled as a whole into the C - shaped groove of a window sash or window frame profile.

[0042] The above-mentioned anti-disengagement seat 10 includes a first plate-shaped portion 11 and a rope cylinder 12. A rope passing hole 121 for the anti-falling rope to pass through is provided on the rope cylinder 12, and the rope cylinder 12 is fixedly connected to the first plate-shaped portion 11, that is, the anti-disengagement seat 10 is connected to the anti-falling rope through the rope cylinder 12. The overall shape of the first plate-shaped portion 11 is flat, and a plurality of first locking holes 111 are provided on the first plate-shaped portion 11, and each first locking hole 111 penetrates the upper surface and the lower surface of the first plate-shaped portion 11. In an embodiment of the present utility model, the rope cylinder 12 is connected to the upper surface of the first plate-shaped portion 11. Of course, in practical applications, the rope cylinder 12 can also be connected to the side portion, the end portion or other positions of the first plate-shaped portion 11.

[0043] The above-mentioned clamping block 20 includes a second plate-shaped portion 21, and the width of the second plate-shaped portion 21 is smaller than the width B1 of the C-shaped groove 51 on the profile 50, so as to facilitate the inclined placement of the clamping fixing device into the C-shaped groove 51, as Figure 4 shown. In particular, to facilitate the second plate-shaped portion 21 to be conveniently placed into the C-shaped groove 51, the width of the second plate-shaped portion 21 can be less than or equal to the notch width B2 of the C-shaped groove. A plurality of second locking holes 211 are provided on the second plate-shaped portion 21, and each second locking hole 211 penetrates the upper surface and the lower surface of the second plate-shaped portion 21, and the number and positions of the second locking holes 211 on the second plate-shaped portion 21 correspond to the number and positions of the first locking holes 111 on the first plate-shaped portion 11.

[0044] The above-mentioned first plate-shaped portion 11 and second plate-shaped portion 21 are assembled together through a movable connecting member 30. The second plate-shaped portion 21 is located below the first plate-shaped portion 11, and the first plate-shaped portion 11 and the second plate-shaped portion 21 are respectively movably connected to the movable connecting member 30. The above-mentioned movable connection means that the assembled first plate-shaped portion 11 and second plate-shaped portion 21 can move relative to each other, and the first plate-shaped portion 11 and the second plate-shaped portion 21 are clamped in the C-shaped groove 51 by relative movement.

[0045] The above-mentioned clamping fixing device is movably connected to the anti-disengagement seat 10 and the clamping block 20 respectively through the movable connecting member 30. Thus, during the process of assembling the clamping fixing device into the C-shaped groove of the window sash or window frame profile, the anti-disengagement seat 10 and the clamping block 20 will never separate. Compared with the existing clamping anti-disengagement device, it can ensure that the clamping block 20 will not fall off and be lost during the assembly process.

[0046] In an embodiment of the present utility model, a first movable mounting hole 112 is provided on the first plate-shaped portion 11, a second movable mounting hole 212 is provided on the second plate-shaped portion 21, and the position of the second movable mounting hole 212 corresponds to the position of the first movable mounting hole 112. The movable connecting member 30 passes through the first movable mounting hole 112 and the second movable mounting hole 212 to movably connect the anti-detachment seat 10 (i.e., the first plate-shaped portion 11) and the clamping block 20 (i.e., the second plate-shaped portion 21). Specifically, the radial dimension of one end of the movable connecting member 30 is greater than the radial dimension of the first movable mounting hole 112, the radial dimension of the other end of the movable connecting member 30 is greater than the radial dimension of the second movable mounting hole 212, and the radial dimension of the middle portion of the movable connecting member 30 is respectively adapted to the radial dimensions of the first movable mounting hole 112 and the second movable mounting hole 212. The matching structure of the first movable mounting hole 112, the second movable mounting hole 212 and the movable connecting member 30 is relatively simple, which is convenient for assembling the first plate-shaped portion 11 and the second plate-shaped portion 21 together.

[0047] In an embodiment of the present utility model, the above-mentioned movable connecting member 30 is composed of a rivet passing through the first movable mounting hole 112 and the second movable mounting hole 212. The rivet includes a head 31, a gear portion 32 and a columnar portion 33. The above-mentioned head 31, gear portion 32 and columnar portion 33 are axially connected in sequence (the head 31 may have a hexagonal groove), and the rivet is rotationally connected to the first plate-shaped portion 11 by inserting the gear portion 32 into the first movable mounting hole 112 and rotationally connected to the second plate-shaped portion 21 by inserting the columnar portion 33 into the second movable mounting hole 212. In addition, the rivet further includes a tail, which may specifically be composed of a screw threadedly connected to the tail end of the columnar portion, or formed by directly deforming the columnar portion under pressure. The radial dimension of the head 31 of the rivet is greater than the radial dimension of the first movable mounting hole 112, and the radial dimension of the tail is greater than the radial dimension of the second movable mounting hole 212. When the first plate-shaped portion 11 and the second plate-shaped portion 21 are movably connected by the rivet, the head of the rivet protrudes from the upper surface of the first plate-shaped portion 11, and the tail protrudes from the lower surface of the second plate-shaped portion 21.

[0048] The radial dimension of the above-mentioned first movable mounting hole 112 is greater than the radial dimension of the gear portion 32, the radial dimension of the second movable mounting hole 212 is adapted to the radial dimension of the columnar portion 33 (that is, the radial dimension of the second movable mounting hole 212 is equal to or slightly greater than the radial dimension of the columnar portion 33, as long as it is ensured that the columnar portion 33 can rotate in the second movable mounting hole 212), the edge of the first movable mounting hole 112 has teeth 1121 meshing with the gear portion 32, and during the rotation of the rivet, the first plate-shaped portion 11 is pushed to move relative to the second plate-shaped portion 21 in the width direction (i.e., Figure 1 the X direction) by the cooperation of the gear portion 32 and the teeth 1121. For example, in the initial state, as Figure 5As shown in (a), the gear part 32 abuts against the rightmost side of the first movable mounting hole 112; when the rivet is turned clockwise, since the radial dimension of the second movable mounting hole 212 is adapted to the radial dimension of the columnar part 33, the gear part 32 pushes the first plate part 11 to move rightward relative to the second plate part 21 through the teeth 1121, as Figure 5 shown in (b), until the gear part 32 abuts against the leftmost side of the first movable mounting hole 112, as Figure 5 shown in (c).

[0049] Through the above structure, the movable connecting member 30 can drive the first plate part 11 and the second plate part 21 to move relatively in the width direction while realizing the movable connection between the first plate part 11 and the second plate part 21, so as to facilitate the clamping fixing device to be clamped in the C-shaped groove.

[0050] In an embodiment of the present utility model, the anti-detachment seat 10 includes a convex foot 13 located below the first plate part 11 and facing the first side edge in the width direction X of the first plate part 11, and when the clamping fixing device is placed in the C-shaped groove 51, both the convex foot 13 and the second plate part 21 are located below the notch of the C-shaped groove 51. By turning the rivet, the first plate part 11 and the second plate part 21 are pushed to move relatively, so that the distance between the edge of the second plate part 21 away from the convex foot 13 and the convex foot 13 is greater than the width B2 of the notch of the C-shaped groove 51, so that the clamping fixing device is clamped in the C-shaped groove 51.

[0051] Specifically, the axial dimension of the gear part 32 of the above rivet is greater than the thickness of the first plate part 11, and the radial dimension of the gear part 32 is greater than the radial dimension of the second movable mounting hole 212. In this way, when the first plate part 11 and the second plate part 21 are movably connected by the rivet, there is a gap between the first plate part 11 and the second plate part 21, thereby reducing the friction force when the first plate part 11 and the second plate part 21 move relatively. Correspondingly, the anti-detachment seat 10 further includes two ear plates 14, and the two ear plates 14 are respectively connected below the first plate part 11 and are respectively perpendicular to the length direction Y of the first plate part 11. Each ear plate 14 has a convex foot 13, and the convex foot 13 includes a hook part and an inclined surface located below the hook part.

[0052] When the first plate part 11 and the second plate part 21 are movably connected, the second plate part 21 is located between the two ear plates 14, and there are several convex heads 22 at the side adjacent to the convex foot 13 on the upper surface of the second plate part 21, and when the clamping fixing device is placed in the C-shaped groove 51, the convex heads are located in the notch of the C-shaped groove 51. Through the above structure, the first plate part 11 and the rope drum 12 can be located above the notch of the C-shaped groove 51, which is convenient for the clamping fixing device to clamp the profile 50.

[0053] Combined with Figure 4As shown, when assembling the above clamping fixing device to the C-shaped groove 51 (at this time, the distance between the side of the second plate-shaped part 21 away from the convex foot 13 and the convex foot 13 is in the closest state, as Figure 5 (a) shown), the clamping fixing device can be tilted slightly first, and the inclined surface is used to guide the convex foot 13 to pass through the notch of the C-shaped groove 51 and be embedded into the C-shaped groove 51 first, and then the side of the second plate-shaped part 21 away from the convex foot 13 is passed through the notch of the C-shaped groove 51 and embedded into the C-shaped groove 51. At the same time, the convex head 22 on the second plate-shaped part 21 abuts against the notch of the C-shaped groove 51, as Figure 6 (a) shown. At this time, by turning the rivet, the first plate-shaped part 11 moves to the right until the convex foot 13 abuts against the right side wall of the C-shaped groove 51, as Figure 6 (b) shown. Continue to turn the rivet. Under the pushing force of the reaction force of the rivet, the columnar part 33 of the rivet pushes the second plate-shaped part 21 to move left until the left edge of the second plate-shaped part 21 abuts against the left side wall of the C-shaped groove 51, as Figure 6 (c) shown, so that the clamping fixing device is clamped in the C-shaped groove 51.

[0054] In an embodiment of the present utility model, the above clamping fixing device further includes a locking member 40, and the locking member 40 passes through the first locking hole 111 and the second locking hole 211 to lock and fix the first plate-shaped part 11 and the second plate-shaped part 21. That is, after the clamping fixing device is clamped in the C-shaped groove 51, the first plate-shaped part 11 and the second plate-shaped part 21 are locked and fixed by the locking member 40, so as to prevent the first plate-shaped part 11 and the second plate-shaped part 21 from moving in the reverse direction and disengaging from the C-shaped groove 51.

[0055] Specifically, the above locking member 40 can be a screw. And the first locking hole 111 can be formed by an oval hole, the second locking hole 211 is formed by a circular screw hole, and the long axis direction of the oval hole is parallel to the width direction X of the first plate-shaped part 11. During assembly, the screw can be passed through the oval hole and threadedly connected to the circular screw hole of the second plate-shaped part 21 (not tightened, the first plate-shaped part 11 and the second plate-shaped part 21 can still move along the long axis direction of the oval hole), and then the screw is tightened after the first plate-shaped part 11 and the second plate-shaped part 21 are adjusted in place to lock and fix the first plate-shaped part 11 and the second plate-shaped part 21. The above structure facilitates the locking and fixing operation of the first plate-shaped part 11 and the second plate-shaped part 21.

[0056] Specifically, the first plate-shaped portion 11 includes two first locking holes 111 distributed along the length direction Y of the first plate-shaped portion 11, and the first movable mounting hole 112 is located between the two first locking holes 111; correspondingly, the second plate-shaped portion 21 includes two second locking holes 211 distributed along the length direction Y of the second plate-shaped portion 21, and the second movable mounting hole 212 is located between the two second locking holes 211. With the above structure, the locking stability of the first plate-shaped portion 11 and the second plate-shaped portion 21 can be improved.

[0057] In an embodiment of the present invention, the rope drum 12 is located at the first side edge in the width direction on the upper surface of the first plate-shaped portion 11, that is, the rope drum 12 is located above the convex foot 13 and is arranged along the length direction of the first plate-shaped portion 11. With this structure, it is convenient to improve the structural strength of the clamping type fixing device after connecting the anti-falling rope.

[0058] As Figure 7 shown, the present invention also provides a window sash anti-detachment device, which includes a first fixing component 60, a second fixing component 70 and an anti-falling rope 80. The first fixing component 60 is used to be fixed to a window frame (such as a window frame profile), the second fixing component 70 is used to be fixed to a window sash (such as a window sash profile), the first fixing component 60 and the second fixing component 70 are respectively connected to the anti-falling rope 80, and at least one of the first fixing component 60 and the second fixing component 70 is composed of the above-mentioned clamping type fixing device. This window sash anti-detachment device can effectively prevent the window sash from falling due to accidentally losing connection with the window frame.

[0059] As mentioned above, only the specific preferred embodiments of the present invention are described, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A clamping fixture for mounting to a C-shaped groove of a window sash or window frame, characterized in that: The clamping fixture comprises: The anti-fall seat comprises a first plate-shaped portion and a rope drum fixedly connected to the first plate-shaped portion and used for assembling an anti-fall rope, wherein the first plate-shaped portion has a first locking hole, and the first locking hole passes through the upper surface and the lower surface of the first plate-shaped portion; The clamping block comprises a second plate-shaped portion, wherein the width of the second plate-shaped portion is smaller than the width of the C-shaped groove, and the second plate-shaped portion has a second locking hole corresponding to the position of the first locking hole, and the second locking hole passes through the upper surface and the lower surface of the second plate-shaped portion; The movable connecting member is used to assemble the second plate-shaped part under the first plate-shaped part. The first plate-shaped part and the second plate-shaped part are movably connected to the movable connecting member respectively, and the first plate-shaped part and the second plate-shaped part can move relative to each other so that the clamping fixing device is clamped in the C-shaped groove.

2. The clamping fixing device according to claim 1, characterized in that: The first plate-shaped portion has a first movable mounting hole, the second plate-shaped portion has a second movable mounting hole, and the position of the second movable mounting hole corresponds to the position of the first movable mounting hole. The movable connecting member passes through the first movable mounting hole and the second movable mounting hole to movably connect the anti-disengagement seat and the clamping block.

3. The clamping fixing device according to claim 2, characterized in that: The movable connecting member is composed of a rivet passing through the first movable mounting hole and the second movable mounting hole, the rivet includes a head, a gear portion and a columnar portion which are axially connected in sequence, and the movable connecting member is inserted into the first movable mounting hole through the gear portion and is rotatably connected to the first plate-shaped portion, and is inserted into the second movable mounting hole through the columnar portion and is rotatably connected to the second plate-shaped portion; The radial dimension of the first movable mounting hole is larger than the radial dimension of the gear portion, the radial dimension of the second movable mounting hole is matched with the radial dimension of the columnar portion, the edge of the first movable mounting hole has gear teeth meshing with the gear portion, and during the rotation of the rivet, the gear portion and the gear teeth cooperate to push the first plate-like portion to move relative to the second plate-like portion in the width direction.

4. The clamping fixing device according to claim 3, characterized in that: The anti-slip seat includes a protruding foot located below the first plate-like portion and facing the first side edge in the width direction of the first plate-like portion, and when the clamping fixing device is placed in the C-shaped groove, the protruding foot and the second plate-like portion are both located below the notch of the C-shaped groove; the clamping fixing device is clamped in the C-shaped groove through the protruding foot and the edge of the second plate-like portion away from the protruding foot.

5. The clamping fixing device according to claim 4, characterized in that: The axial dimension of the gear portion is greater than the thickness of the first plate-shaped portion, and the radial dimension of the gear portion is greater than the radial dimension of the second movable mounting hole; the anti-slip seat comprises two ear plates, the two ear plates are respectively connected to the bottom of the first plate-shaped portion and are respectively perpendicular to the length direction of the first plate-shaped portion, each ear plate has a convex foot, and the convex foot comprises a hook portion and an inclined surface located below the hook portion; The second plate-shaped portion is located between the two ear plates, and a plurality of protrusions are provided on the upper surface of the second plate-shaped portion at the side adjacent to the protruding feet, and when the clamping fixture is placed in the C-shaped groove, the protrusions are located in the notch of the C-shaped groove.

6. The clamping fixing device according to claim 4, characterized in that: The rope drum is located on a first side edge in a width direction of an upper surface of the first plate-shaped portion and is disposed along a length direction of the first plate-shaped portion.

7. The clamping fixing device according to any one of claims 1 to 6, characterized in that: The clamping type fixing device comprises a locking member, and the locking member passes through the first locking hole and the second locking hole to lock and fix the first plate-shaped portion and the second plate-shaped portion.

8. The clamping fixing device according to claim 7, characterized in that: The locking member is a screw, the first locking hole is composed of a waist-shaped hole, the second locking hole is composed of a circular screw hole, and the long axis direction of the waist-shaped hole is parallel to the width direction of the first plate-shaped portion.

9. The clamping fixing device according to claim 2, characterized in that: The first plate-shaped portion comprises two first locking holes distributed along the length direction of the first plate-shaped portion, and the first movable mounting hole is located between the two first locking holes; The second plate-shaped portion includes two second locking holes distributed along the length direction of the second plate-shaped portion, and the second movable mounting hole is located between the two second locking holes.

10. A window sash anti-drop device, characterized in that: It comprises a first fixing component, a second fixing component and an anti-fall rope, and at least one of the first fixing component and the second fixing component is composed of the clamping fixing device described in any one of claims 1-9.

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