Transmission lock for casement window

Abstract

The utility model provides a casement window transmission lock which is characterized in that an insertion groove is formed in a cover plate strip, and two first long-strip-shaped holes are formed in the cover plate strip; the transmission rod is arranged in the inserting groove in a penetrating mode, two second long-strip-shaped holes are formed in the transmission rod, and a transmission rack is arranged between the two second long-strip-shaped holes. One ends of the two locking points penetrate through the two first strip-shaped holes and are vertically connected with the transmission rod; the transmission lock box is connected to the end face of one side of the transmission rod, a transmission gear meshed with the transmission rack is arranged in the transmission lock box, and a connecting shaft hole penetrating through the transmission lock box is formed in the axial center of the transmission gear. Compared with the prior art, the transmission lock has the advantages that the cover plate strip, the transmission rod, the lock point and the transmission lock box are pre-assembled into a whole, a structure for independently assembling spare and accessory parts is omitted, the transmission lock box can be directly and fixedly mounted in a mounting hole in a window sash, and the cover plate strip directly abuts against and is attached to a sash groove of the window sash, so that the transmission lock can be integrally mounted when the window sash is assembled; installation procedures can be effectively simplified, installation efficiency of the window sash is improved, and installation is convenient and fast.

Description

Technical Field

[0001] This utility model relates to the technical field of door and window hardware accessories, specifically to a casement window transmission lock. Background Technology

[0002] The transmission lock part of a household casement window generally consists of a transmission lock box, locking point, lock seat and transmission rod. It is used as a hardware accessory for casement windows. The transmission lock box, transmission rod and locking point are installed on the window sash profile, and the lock seat is installed on the window frame profile.

[0003] In existing technologies, the transmission lock box, connecting rod, and locking point are mostly separate structures. The connecting rod needs to be pre-inserted into the window sash groove before the window sash is assembled. After the window sash is assembled, the transmission lock box is then installed on the window sash and connected to the connecting rod. This results in a large number of parts to be assembled, making the assembly relatively complex and not conducive to improving assembly efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a casement window transmission lock, which aims to solve the problem that the components of the casement window transmission lock need to be assembled sequentially on the window sash profile, which is relatively complicated and not conducive to improving assembly efficiency.

[0005] To achieve the above objectives, this utility model provides a casement window transmission lock, comprising: a cover strip, the inside of which is provided with a slot, and two first elongated holes spaced apart on the cover strip; a transmission rod, which passes through the slot, and has two second elongated holes spaced apart on the transmission rod, the two second elongated holes being located between the two first elongated holes, and a transmission rack being provided between the two second elongated holes; two locking points, one end of each locking point passing through the two first elongated holes and perpendicularly connected to the transmission rod; and a transmission lock box, connected to one end face of the transmission rod, the transmission lock box containing a transmission gear meshing with the transmission rack, and the axial center of the transmission gear having a connecting hole penetrating the transmission lock box.

[0006] Furthermore, the transmission lock box includes a mounting base, the transmission gear, and a side plate. A screw fixing piece is fitted on the mounting base, and the hole of the screw fixing piece is aligned with the hole of the second elongated hole. A screw passes through the cover strip and connects to the screw fixing piece. The mounting base has a gear mounting hole, and the transmission gear is disposed in the gear mounting hole. Both ends of the transmission gear have bosses extending axially. The side plates are symmetrically stacked and fixed to the two end faces of the mounting base, and the side plates have boss connecting holes that connect with the bosses.

[0007] Furthermore, the mounting base includes two symmetrically spaced mounting blocks, each with a mounting notch at one end. The screw fixing piece is engaged with the mounting block, and the two mounting blocks are fixedly connected between the symmetrically arranged side plates by a connector. The gear mounting hole is formed at the mounting notch of the two mounting blocks.

[0008] Furthermore, the transmission lock box also includes a positioning connector. Both the mounting block and the side plate are provided with a positioning hole. One end of the positioning connector passes through the positioning hole on the mounting block and the side plate, and the other end of the positioning connector is fixed to the end face of one of the side plates.

[0009] Furthermore, the transmission rack includes a rack plate, on which a plurality of toothed holes are spaced apart along its length.

[0010] Furthermore, the transmission rod is provided with a strip mounting hole, and the strip is fixedly installed in the strip mounting hole.

[0011] Furthermore, the strip is welded and fixed in the strip mounting hole, and one end face of the strip is flush with one end face of the transmission rod.

[0012] Furthermore, the transmission rod is provided with detachable extension rods at both ends, and one end of the locking point passes through the first elongated hole and is perpendicularly connected to the extension rod.

[0013] Furthermore, the two ends of the cover strip are provided with sealing end caps that are inserted into the slots.

[0014] The casement window transmission lock provided by this utility model, compared with the prior art, integrates the cover strip, transmission rod, locking point and transmission lock box into one unit, eliminating the need for separate assembly of parts. The transmission lock box can be directly installed and fixed in the mounting hole on the window sash, and the cover strip directly abuts and fits into the window sash groove. This allows the transmission lock to be installed as a whole during window sash assembly, which can effectively simplify the installation process, improve the installation efficiency of the window sash, and make installation convenient and quick. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a casement window transmission lock according to the present invention;

[0016] Figure 2 This is an exploded view of a casement window transmission lock according to the present invention;

[0017] Figure 3 This is a schematic diagram of the connection structure between transmission gears in a casement window transmission lock according to the present invention;

[0018] Figure 4This is a schematic diagram of the transmission rack on the transmission rod in a casement window transmission lock according to this utility model.

[0019] Explanation of reference numerals in the attached figures

[0020] 10-Cover strip; 11-Slot; 12-First elongated hole; 13-Sealing end cap;

[0021] 20-Drive rod; 201-Strip mounting hole; 21-Second long strip hole; 22-Drive rack; 221-Strip; 222-Tooth hole; 23-Extension rod;

[0022] 30-lock point;

[0023] 40-Transmission lock box; 41-Transmission gear; 411-Boss; 42-Mounting block; 421-Mounting notch; 422-Screw fixing piece; 43-Side plate; 431-Boss connecting hole; 44-Positioning connector; 45-Positioning connecting hole. Detailed Implementation

[0024] The present invention will be described in detail below with reference to specific embodiments.

[0025] In this utility model, when directional terms appear, they are used to facilitate the description of this utility model and simplify the description, rather than indicating or implying that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, when terms such as "set in," "connected," or "linked" appear, these terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] like Figures 1 to 4 As shown, a casement window transmission lock includes a cover plate 221, a transmission rod 20, two locking points 30, and a transmission lock box 40.

[0028] The cover strip 10 has a slot 11 inside, and two first elongated holes 12 spaced apart on the cover strip 10. A transmission rod 20 passes through the slot 11, and two second elongated holes 21 spaced apart on the transmission rod 20 are located between the two first elongated holes 12. A transmission rack 22 is located between the two second elongated holes 21. One end of each of the two locking points 30 passes through one of the two first elongated holes 12 and is perpendicularly connected to the transmission rod 20. A transmission lock box 40 is connected to one end face of the transmission rod 20. The transmission lock box 40 contains a transmission gear 41 that meshes with the transmission rack 22. The axial center of the transmission gear 41 has a connecting hole that penetrates the transmission lock box 40.

[0029] In practical implementation, the cover strip 10, transmission rod 20 and transmission lock box 40 are stacked together in sequence. The transmission rod 20 passes through the slot 11 of the cover strip 10 and is installed in the sash groove of the window sash together with the cover strip 10. One end of the two locking points 30 passes through the first elongated hole 12 on the cover strip 10 and is connected to the transmission rod 20. The two locking points 30 can move simultaneously with the transmission rod. The first elongated hole 12 restricts the movement of the locking points 30 on the cover strip 10. The transmission lock box 40 is installed in the lock mounting hole of the window sash. The transmission lock box 40 passes sequentially through the cover strip 10 and the second elongated hole 21 on the transmission rod 20 via a connector, connecting the transmission lock box 40 to one end face of the transmission rod 20. The transmission gear 41 inside the transmission lock box 40 meshes with the rack on the transmission rod 20 for transmission. By rotating the transmission gear 41, the transmission rod 20 moves within the cover strip 10, thereby moving the locking point 30 connected to the transmission rod 20 within the first elongated hole 12. The transmission gear 41 is a 304 stainless steel precision-cast gear, which will not break under a torque of 25 N / m.

[0030] In this embodiment, the transmission lock box 40 includes a mounting base, a transmission gear 41, and a side plate 43. A screw fixing piece 422 is mounted on the mounting base. The hole of the screw fixing piece 422 is aligned with the hole of the second elongated hole 21, and a screw passes through the cover strip 10 and is connected to the screw fixing piece 422. The mounting base is provided with a gear mounting hole, and the transmission gear 41 is disposed in the gear mounting hole. Both ends of the transmission gear 41 are provided with bosses 411 extending axially. The side plates 43 are symmetrically stacked and fixed on the two end faces of the mounting base. The side plates 43 are provided with boss connecting holes 431 that connect to the bosses 411.

[0031] In practical implementation, the connecting parts between the transmission lock box 40, the cover strip 10, and the transmission rod 20 are screws. The screw fixing piece 422 on the mounting base is the fastening connection end of the screw. The transmission gear 41 is set on the mounting base, and the transmission gear 41 is fixed to prevent it from falling off by two symmetrically arranged side plates 43.

[0032] Specifically, the mounting base includes two symmetrically spaced mounting blocks 42. Each mounting block 42 has a mounting notch 421 at one end, and a screw fixing piece 422 is engaged with it. The two mounting blocks 42 are fixedly connected between symmetrically arranged side plates 43 via a connector, and the gear mounting holes are formed at the mounting notches 421 of the two mounting blocks 42. The connector used to fix the mounting blocks 42 and the side plates 43 is a rivet, making the connection between the mounting blocks 42 and the side plates 43 more secure and less prone to loosening.

[0033] In this embodiment, the transmission lock box 40 also includes a positioning connector 44. The mounting block 42 and the side plate 43 are both provided with connection positioning holes. One end of the positioning connector 44 passes through the positioning connection hole 45 on the mounting block 42 and the side plate 43, and the other end of the positioning connector 44 is fixed to the end face of one of the side plates 43.

[0034] In practical implementation, the positioning connection hole 45 is a square hole, and the positioning connector 44 is used to play a positioning role to prevent swaying when the two mounting blocks 42 and the two side plates 43 are assembled and spliced, so that the installation accuracy between the two mounting blocks 42 and the two side plates 43 is more accurate and the assembly is more convenient.

[0035] In this embodiment, the transmission rack 22 includes a strip 221, on which a plurality of toothed holes 222 are spaced apart along its length. The transmission rack 22 is a stamped part, formed by stamping a plurality of toothed holes 222 at intervals on the strip 221. The transmission rack 22 has a low manufacturing cost and saves manufacturing costs.

[0036] In this embodiment, the transmission rod 20 is provided with a strip plate 221 mounting hole 201 for mounting the transmission rack 22, and the strip plate 221 is fixedly installed in the strip plate 221 mounting hole 201.

[0037] Specifically, the strip 221 is welded and fixed inside the mounting hole 201 of the strip 221, and one end face of the strip 221 is flush with one end face of the transmission rod 20. This ensures that the transmission rod 20 can move smoothly in the slot 11, and allows the transmission gear 41 to better mesh and connect on the other side.

[0038] In this embodiment, the transmission rod 20 has detachable extension rods 23 at both ends, and one end of the locking point 30 passes through the first elongated hole 12 and is perpendicularly connected to the extension rod 23. The interval between the two locking points 30 can be adjusted according to different window sash sizes, making it widely applicable.

[0039] In this embodiment, the two ends of the cover strip 10 are provided with sealing end caps 13 with insertion slots 11, which can achieve a flat and beautiful appearance, and can also seal dust.

[0040] The casement window transmission lock provided by this utility model, compared with the prior art, integrates the cover strip 10, transmission rod 20, locking point 30 and transmission lock box 40 into a pre-assembled whole, eliminating the need for separate assembly of parts. The transmission lock box 40 can be directly installed and fixed in the mounting hole on the window sash, and the cover strip 10 directly abuts and fits into the window sash groove. This allows the transmission lock to be installed as a whole during window sash assembly, which can effectively simplify the installation process, improve the installation efficiency of the window sash, and make installation convenient and quick.

[0041] Where there is no conflict, the above embodiments and features can be combined with each other.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A casement window transmission lock, characterized in that, include: A cover strip, wherein the cover strip has a slot inside and two first elongated holes are spaced apart on the cover strip; A transmission rod is inserted into the slot, and two second elongated holes are provided on the transmission rod at intervals. The two second elongated holes are located between the two first elongated holes, and a transmission rack is provided between the two second elongated holes. Two locking points, one end of each of the two locking points passing through the two first elongated holes and perpendicularly connected to the transmission rod; A transmission lock box is connected to one end face of the transmission rod. The transmission lock box contains a transmission gear that meshes with the transmission rack. The axial center of the transmission gear has a connecting hole that passes through the transmission lock box.

2. The casement window transmission lock according to claim 1, characterized in that, The transmission lock box includes a mounting base, the transmission gear, and side plates. A screw fixing piece is fitted on the mounting base, and the hole of the screw fixing piece is aligned with the hole of the second elongated hole. A screw passes through the cover strip and connects to the screw fixing piece. The mounting base has a gear mounting hole, and the transmission gear is disposed in the gear mounting hole. Both ends of the transmission gear have bosses extending axially. The side plates are symmetrically stacked and fixed to the two end faces of the mounting base, and the side plates have boss connecting holes that connect to the bosses.

3. A casement window transmission lock according to claim 2, characterized in that, The mounting base includes two symmetrically spaced mounting blocks. Each mounting block has a mounting notch at one end. The screw fixing piece is engaged with the mounting block. The two mounting blocks are fixedly connected between the symmetrically arranged side plates by a connector, and the gear mounting hole is formed at the mounting notch of the two mounting blocks.

4. A casement window transmission lock according to claim 3, characterized in that, The transmission lock box also includes a positioning connector. Both the mounting block and the side plate are provided with a positioning hole. One end of the positioning connector passes through the positioning hole on the mounting block and the side plate, and the other end of the positioning connector is fixed to the end face of one of the side plates.

5. A casement window transmission lock according to claim 1, characterized in that, The transmission rack includes a rack plate, on which a plurality of toothed holes are spaced apart along its length.

6. A casement window transmission lock according to claim 5, characterized in that, The transmission rod is provided with a strip mounting hole, and the strip is fixedly installed in the strip mounting hole.

7. A casement window transmission lock according to claim 6, characterized in that, The strip is welded and fixed in the mounting hole of the strip, and one end face of the strip is flush with one end face of the transmission rod.

8. A casement window transmission lock according to claim 1, characterized in that, The transmission rod has detachable extension rods at both ends, and one end of the locking point passes through the first elongated hole and is perpendicularly connected to the extension rod.

9. A casement window transmission lock according to claim 1, characterized in that, Both ends of the cover strip are provided with sealing end caps that can be inserted into the slots.

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