Double locking device for sash door

Abstract

Disclosed is a double locking device for a sash door, including: a first locking device having a first operation function for restricting a movement of a door and a second operation function for releasing the first operation function; and a second locking device having a third operation function for restricting the second operation function and a fourth operation function for releasing the third operation function. According to the dual locking device for a sash door, an external intrusion can be prevented even only by the first locking device, but the interior thereof becomes more safe from an external intrusion by the second locking device for restricting an operation of the first locking device. Moreover, a door can be locked for each section within the opening / closing range of the door and thus the door can be opened enough to prevent not only outside intruders but also infants from entering or exiting, to simultaneously satisfy ventilation and safety and, particularly, to prevent infants from falling during ventilation since the door is narrowly opened.

Description

Double locking device for sash door

[0001] The present invention relates to a double locking device for a sash door, which comprises a first locking device having a section-by-section door locking function and a second locking device that controls the operation of the first locking device, thereby improving prevention of external intrusion.

[0002]

[0003] Construction of apartment complexes in Korea began to increase in the 1960s and has since become a prominent housing type. As of 2016, apartments accounted for over 60% of all housing units, meaning that there are over 10 million households nationwide, or 48.6% of all households.

[0004] Since the 2000s, various certification systems related to apartment complexes, including the Green Building Certification System, have been implemented, and since 2015, the application of Crime Prevention Through Environmental Design (CPTED) has been mandatory for apartment complexes with 500 or more households completed in Korea.

[0005] CPTED theory is a theory that asserts the possibility of crime prevention through environmental design, and is currently the most widely used and continuously developing theory among various environmental criminology theories.

[0006] CPTED (Crime Prevention Through Environmental Design) is defined by the National Crime Prevention Institute (NCPI) in the United States as "the prevention of crime, reduction of fear of crime, and improvement of quality of life through appropriate design and effective use of the built environment." Crowe (T.) also defined it as "a technique for reducing the fear and scope of crime and improving quality of life through appropriate design and effective use of the built environment." CPTED is a comprehensive crime prevention strategy that fundamentally reduces the opportunity for crime to occur through defensive design and appropriate management of areas in the urban environment, such as architectural design and urban planning, thereby preventing crime, reducing people's fear of crime, and ultimately improving the quality of life. The theoretical origins of CPTED begin with Jacobs (Jacobs, J.). In his 1961 book, "The Death and Life of Great American Cities," Jacobs predicted the tragedy of urban redevelopment, arguing that as urban redevelopment progressed, traditional areas were destroyed and crime problems began to arise. Jacobs emphasized informal social control, natural surveillance, and territorial identity to prevent crime through the environment, and in particular, he talked about natural surveillance based on the concept of "the eyes on the street" as a major deterrent to criminal activity. In this way, Jacobs was the first to systematize the concept of CPTED, which aims to prevent crime by improving the physical environment of buildings, regions, or cities. The term CPTED was coined by Jeffery, R.) was first introduced in 1971 when he published a book titled 'Crime Prevention Through Environmental Design' explaining the relationship between urban design and crime. Jeffrey pointed out that the social system related to crime prevention and punishment lacked consideration of human behavior and environmental factors, and argued that crime could be prevented through physical environmental design based on criminal behavior and tendencies. CPTED theory emphasizes the comprehensive consideration of various matters related to the formation of residential areas, such as physical environment, housing design and environmental design, resident participation, and administrative support. Through this, it is argued that crime can be prevented in each area from micro-units such as houses to macro-units such as urban streets and communities, and a city with a low fear of crime can be created.

[0007] CPTED theory received substantial development when O. Newman introduced the concept of "defensible space." Using crime-related data from the New York City Housing Authority, Newman examined environmental factors for crime prevention and verified them through field research. Based on defensible space theory, he focused on how architecture, as a physical environment, contributes to deterring criminal behavior, rather than on criminals themselves and their motivations. Newman discussed territoriality, natural surveillance, image, and milieu as physical design elements for creating defensible spaces against crime. Furthermore, Newman divided neighborhood spaces into private space, reflective space, semi-public space, and public space. Newman explains that spaces within neighborhoods should be included as much as possible in the scope of private space to ensure natural visibility and enable protection and surveillance by residents, and that planning and design that includes and utilizes reflective and private areas as much as possible when planning public and semi-public spaces are effective in preventing crime.

[0008] In the 1980s, CPTED theories and principles, driven by the "Broken Windows Theory" and empirical research, emphasized the importance of "maintenance" of buildings and the environment. They argued that crimes tend to occur in areas that are inadequately cared for or neglected by society, and that if communities are free of *?**?*broken windows*?**?*, crime will continually decrease and eventually disappear completely. The importance of this maintenance was particularly highlighted by Coleman's 1985 study of council housing estates in the UK. Coleman compared high-rise buildings with other styles and concluded that there was a correlation between architectural style and crime rates and antisocial behavior. Coleman concluded that the physical environment itself was responsible for the high crime rates in those areas.

[0009] In the 2000s, Crowe (T.) systematized CPTED's practical strategies based on existing research. In addition to the crime prevention principles derived from Newman's defensible space theory, he also conducted research on situational crime prevention, focusing on the management and use of space, a concept not addressed in defensible space theory. Through this work, Crowe organized CPTED techniques into six basic principles: natural surveillance, access control, enhanced territoriality, enhanced clarity, increased usability, and maintenance.

[0010] The core of CPTED theory is that the impact of the urban environment on human behavior can ultimately reduce the occurrence of crime and the fear of crime. This "impact on behavior" refers to reducing the environment and factors that can trigger criminal activity. However, this "environment" does not simply refer to the physical environment or urban / architectural design, but rather encompasses a broader, comprehensive concept encompassing social science, law enforcement, behavioral awareness, and local communities. Based on this definition, the basic principles of crime prevention through environmental design can be divided into natural surveillance, access control, territorial enhancement, activity enhancement, and maintenance. These principles are not independent domains, but rather overlap and mutually influence each other. The five principles of CPTED are detailed below.

[0011] Natural Surveillance

[0012] Natural surveillance refers to all measures designed to deter criminals from committing crimes by making street surveillance easier, such as adjusting streetlight brightness and height to enhance visibility for those going about their daily lives, or by placing windows, walls, and fences within sight. This requires ensuring visibility through "eyes on the street" from residents or other people. Natural surveillance reduces the likelihood of criminal activity by creating conditions where intruders can be easily observed, allowing residents to easily distinguish between the activities of neighbors and strangers and take appropriate action, such as reporting a crime if suspected.

[0013] Access Control

[0014] Access control involves deploying facilities, equipment, and personnel to block criminals from entering a targeted location, making it difficult for potential criminals to gain access. Furthermore, in the case of apartment complexes or multi-family housing complexes, access control systems are installed to prevent unauthorized entry while minimizing the number of entrances and exits for the convenience of residents. The principle behind this approach is to discourage criminals from entering residential areas. To strengthen access control, specialized personnel, such as security guards, can be combined with physical measures such as locks, advanced access control devices, and unmanned security systems.

[0015] Territoriality

[0016] Territoriality has the function of distinguishing public and private spaces and indicating land boundaries. To this end, physical features expressing ownership, such as fences, signs, landscaping, lighting, and road pavement design, are used. Those who operate or use the area in question have a positive sense of control over the area, while potential criminals perceive the area as an isolated area, which reduces their desire to commit crime. Territoriality also encompasses features that can define the distinction between private and public spaces and the boundaries of land.

[0017] Activity Support

[0018] By installing and utilizing complex facilities such as parks and open spaces where residents can participate, natural surveillance activities can occur. This means encouraging and stimulating active use by the general public, thereby strengthening natural surveillance through their eyes, reducing crime risks in nearby areas and fostering a sense of security. Rather than exclusively allowing a single group, such as youth or seniors, to utilize diverse spaces like parks, downtown areas, and plazas, one option is to create play facilities and various recreational facilities that families or local residents can use jointly, based on time and location.

[0019] Maintenance and Management

[0020] Creating and improving an organized and clean environment can deter crime by conveying to potential criminals the impression that the location is unsuitable for crime. This is consistent with the "broken windows theory," which states that public spaces that appear dilapidated or abandoned can degenerate into places of disorder and crime by signaling a lack of control or attention from users. Proper maintenance, such as removing objects that attract criminals, keeping gardens neat and tidy, not littering, and keeping houses and warehouses in good repair, is essential. Furthermore, installing "crime watch area" signs to create a visible image of thorough crime management and control within the area can enhance the crime prevention effect.

[0021]

[0022] The purpose of the present invention is to provide a product that has intrusion prevention performance, which is a CPTED element, as a security device for windows*?*balconies, which are private areas of domestic apartment complexes. In particular, even if the principle of the safety locking device of the applicant's registered patent No. 10-2359308 is understood when the sash door is opened, the present invention provides a double locking device for a sash door that has the function of exhibiting additional defense performance by adding a locking device that locks or unlocks the operation of the safety locking device.

[0023]

[0024] The above-described object of the present invention can be achieved by a double locking device for a sash door, which includes a first locking device having a first operation function for limiting movement of a door and a second operation function for releasing the first operation function; and a second locking device having a third operation function for limiting the second operation function and a fourth operation function for releasing the third operation function.

[0025] Here, the first locking device includes a rail portion and an operating portion, wherein the rail portion is configured such that a plurality of connecting portions are formed continuously in the longitudinal direction and is mounted on one side of the sash, and the operating portion includes a handle configured such that a main body is mounted on the door, an opening portion that is rotatably coupled from the main body and has a return means, and a rotational shaft that rotates in conjunction with the rotation of the opening portion, a locking gear that raises and lowers a connecting member connected to one side in conjunction with the rotation of the rotational shaft, and a stopper that is coupled with the connecting member and engaged or released from the engaging portion, and when the first operating function is performed, the stopper may be engaged with the engaging portion, and when the second operating function is performed, the stopper may be released from the rail portion.

[0026] In addition, the second locking device may include a fixed piece that is interposed between the main body and the opening part on one side, and a clip that is mounted on one side of the main body and provides rotation and rotation return of the fixed piece, and when the third operating function is performed, the fixed piece is interposed in the gap between the main body and the opening part to limit rotation of the opening part, and when the fourth operating function is performed, the fixed piece may be rotated by the clip so that one side is released from the gap between the main body and the opening part, thereby enabling rotation of the opening part.

[0027]

[0028] According to the present invention, external intrusion can be prevented even with the first locking device, but the interior becomes more secure from external intrusion by the second locking device that restricts the operation of the first locking device.

[0029] In addition, since the door is locked section by section within the door opening range, the door can be opened to a degree that prevents entry by infants and toddlers, as well as external intruders, thereby satisfying both ventilation and safety. In particular, the narrow opening can prevent infants and toddlers from falling during ventilation.

[0030] Meanwhile, the present invention has a positive effect on access control, one of the basic theories of Crime Prevention Through Environmental Design (CPTED), and thus reduces the anxiety and scope of crime, improves the quality of life, and shows additional effects such as preventing falls and deaths of infants and toddlers.

[0031] The advantages and effects obtainable from the present invention are not limited to the advantages and effects mentioned above, and other advantages and effects not mentioned will be clearly understood by a person having ordinary skill in the art to which the present invention pertains from the description below.

[0032]

[0033] Figure 1 is a drawing showing a sash to which a double locking device according to the present invention is applied.

[0034] Figure 2 is a drawing showing the configuration of a double locking device according to the present invention;

[0035] Figures 3 to 5 are drawings showing the operational relationship of the double locking device according to the present invention.

[0036] Figures 6 and 7 are drawings showing the configuration and operational relationship of a locking gear according to the present invention.

[0037]

[0038] The present invention is capable of various modifications and embodiments. Specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention, as well as the methods for achieving them, will become clearer with reference to the embodiments described in detail below, along with the drawings. However, the present invention is not limited to the embodiments disclosed below and can be implemented in various forms.

[0039] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same reference numerals and redundant descriptions thereof will be omitted.

[0040] Referring to Fig. 1, a double locking device for a sash door (hereinafter, a double locking device) includes a first locking device having a first operation function for limiting movement of a door (2) and a second operation function for releasing the first operation function, and a second locking device having a third operation function for limiting the second operation function and a fourth operation function for releasing the third operation function.

[0041] The above first locking device includes a rail portion (10) and an operating portion.

[0042] Referring to Fig. 2, the rail portion (10) is formed with a concave portion (10b) and a plurality of connecting portions (10c) formed continuously in the longitudinal direction of the body, and can be installed on the upper side of the sash (1). At this time, the length, width, and height of the rail portion (10) can be changed according to the specifications of the sash (1), and the connecting portion (10c) can be formed in the shape of a right triangle so that the stopper (21) cannot move in a set direction and can move freely in the opposite direction.

[0043] When the connecting portion (10c) is formed as a right triangle, the side in the opening direction among the surfaces forming the connecting portion (10c) is formed as a right angle, and the side in the closing direction is formed as an acute angle. At this time, since the height of the right angle side in the opening direction is 1.5 to 3.0 cm, the stopper (21) is deeply fixed, so that even if an impact is applied to the door (2) from the outside, the stopper (21) does not easily come off from the connecting portion (10c).

[0044] Meanwhile, a catch (10)a) may be formed on one side of the rail portion (10). This catch (10a) is formed in a rectangular shape, unlike the connecting portion (10c). This means that even if the stopper (21) moves freely in the closing direction, when it reaches the catch (10a), it is restricted from moving in the closing direction by the catch (10a), so the catch (10a) is useful in preventing fingers from getting caught.

[0045] The above operating part is a configuration including a handle (30) which is composed of a handle body (31) mounted on a door (2), an opening part (32) which is rotatably connected from the handle body (31) and has a return means, and a rotation shaft (33) which rotates in conjunction with the rotation of the opening part (32), a locking gear (100) which raises and lowers a connecting member (22) connected to one side in conjunction with the rotation of the rotation shaft (33), and a stopper (21) which is coupled with the connecting member (22) and is engaged or released from the engaging member (10c), and when the first operating function is performed, the stopper (21) is engaged with the engaging member (10c), and when the second operating function is performed, the stopper (21) is released from the rail part (10).

[0046] Referring to FIGS. 3 and 4, the second locking device includes a locking means for restricting or releasing the restriction on the operation of the handle. Here, the locking device includes a fixed piece (210) that is interposed between the handle body (31) and the opening (32) on one side, and a clip (230) that provides rotation and rotation return of the fixed piece (210) and is mounted on one side of the handle body (31). When the third operation function of the second locking device is performed, the fixed piece (210) is interposed in the gap between the handle body (31) and the opening (32) to restrict the rotation of the opening (32), and when the fourth operation function of the second locking device is performed, the fixed piece (210) is rotated by the clip (230) so that one side is removed from the gap between the handle body (31) and the opening (32). As a result, the opening (32) becomes rotatable.

[0047] Referring to FIGS. 6 and 7, the locking gear (100) is fixedly installed on the inside of the door (2) so as to be connected to the rotation axis (33) of the handle (30).

[0048] The above locking gear (100) is connected to the end of the connecting member (22) connected to the stopper (21) and converts the rotational motion of the handle (30) into linear motion. Therefore, the connecting member (22) connected to the locking gear (100) can be raised and lowered, and in normal times, the stopper (21) and the connecting member (22) are kept upward so that the stopper (21) can always be engaged with the connecting member (10c) of the rail portion (10). To this end, the locking gear (100) includes a case (110), a handle connecting member (120), a driving unit (130), and a spring (140).

[0049] The case (110) is formed with fixing pieces (113) on both sides so that it can be fixedly installed on the inside of the door (2) on which the handle (30) is installed by a fixing member such as a bolt, and is fixed to one side of the door (2) by the fixing pieces (113) and the fixing member. Here, the case (110) is hollow on the inside, and a plurality of partition walls (111) are formed in the hollow inside to divide the compartments, and a handle connection hole (120), a driving unit (130), and a spring (140) are provided in the hollow inside divided by the partition walls (111), and a through hole (112) is formed on the upper side of the case (110), that is, one side connected to the connecting member (22), so as to communicate with the hollow inside.

[0050] In addition, on both inner sides of the case (110), when the pressing step (131) is pressed by the pressing projection (122) of the handle connection (120), it is driven downward, and a guide groove (114) is formed so that the pressing step (131) driven downward can move to a set position, and the guide groove (114) is formed to be curved so that the pressing step (131) moves according to the rotation radius of the handle connection (120).

[0051] The above handle connection (120) is formed in the compartmented interior of the case (110) and a joining hole (121) is formed so that the rotation axis (not shown) of the handle (3) is joined. The joining hole (121) is also formed on one side of the case so that the rotation axis of the handle (3) passes through and is joined.

[0052] Here, a push projection (122) is formed protrudingly on one outer side of the handle connection member (120), and the push projection (122) rotates in accordance with the rotation of the handle (3), and by the rotation of the handle connection member (120), the push projection (122) acts as a lever to push the push step (131) of the drive unit (130), thereby driving the drive unit (130) downward.

[0053] The above driving unit (130) is formed in the compartmented interior of the case (110) and is driven up and down. A pressing step (131) is formed protruding at the lower end so that it is driven downward by the pressing projection (122) of the handle connecting member (120).

[0054] Here, the pressing step portion (131) is formed at the lower end of the driving unit (130), and when pressed by the pressing projection (122) of the handle connecting member (120) and driven downward, one side is formed to be curved so that it can be easily driven in accordance with the rotation radius of the handle connecting member (120).

[0055] And, a connecting portion (132) is formed protrudingly on the upper part of the driving unit (130) to be connected to the connecting member (22), and the upper part of the connecting portion (132) is formed on the side of the through hole (112) inside the case (110) to be connected to the end of the connecting member (22), and a connecting groove (not shown) is formed so as to be connected, and the method of connecting the driving unit (130) and the connecting member (2) is similar to the method of connecting the stopper (21) and the connecting member (22).

[0056] That is, a through hole (not shown) is formed on the outside of the connecting portion (132) where the connecting groove is formed, and the through hole is formed to penetrate both sides of the connecting portion (132), and a fixing member such as a pin or bolt is inserted through the through hole, and then the connecting member (22) inserted into the connecting groove is penetrated to fix the connecting member (22) to the driving unit (130). That is, the connecting member (22) can be attached or detached from the driving unit (130) by the fixing member.

[0057] Additionally, an insertion groove (133) is formed in the stop portion of the driving unit (130) so that a spring (140) supported on one side by the bulkhead (111) of the case (110) is inserted.

[0058] The above spring (140) is installed in the insertion groove (133) of the driving unit (130) and drives the driving unit (130) by pushing it upward. One side of the spring (140) is supported by the partition wall (111) of the case (110), and the other side is supported by the insertion groove (133) of the driving unit (130), thereby pushing the driving unit (130) upward by elastic force.

[0059] Below, the overall operation relationship of the double locking device is described with reference to FIGS. 1 to 7.

[0060] The core components of the double locking device, namely, a rail portion (10), a stopper (21), a connecting rod (22), and a locking gear (100), are installed in a built-in manner on the sash (1) and the door (2), and a handle (30) is installed on the surface of the door (2) on which the locking gear (100) is installed. At this time, it is preferable that the core components be installed at the part where the doors (2) meet, i.e., the middle part of the sash (1), as shown in FIG. 1. This is because the first operation function for limiting the movement of the door (2), the second operation function for releasing the first operation function, the third operation function for limiting the second operation function, and the fourth operation function for releasing the third operation function are performed in the handle (30), and therefore, it must be in a location that is not easily accessible to external intruders.

[0061] When the core components of the double locking device are installed in the sash (1) and the door (2), the basic operation is that the stopper (21) is engaged with the connecting portion (10c) and movement of the door (2) in any direction is locked, which means the first operation function. In addition, as a basic operation, the fixed piece (210) restricts the rotation of the opening portion (32), which means the third operation function.

[0062] In order to release the first operation function of the door (2), the opening part (32) of the handle (30) must be rotated (second operation function), but before that, in order to release the third operation function, the fixed part (210) is first detached from the handle (30) (fourth operation function), and by rotating the opening part (32) (second operation function), the stopper (21) is detached from the coupling part (10c), thereby releasing the first operation function.

[0063] That is, when the fixed piece (210) is rotated as shown in Fig. 3, the opening part (32) becomes rotatable, and accordingly, when the opening part (32) is rotated, the rotation of the rotation shaft (33) is converted into vertical movement by the locking gear (100), and the connecting member (22) and stopper (21) connected to the locking gear (100) are separated from the connecting member (10c), thereby releasing the restriction on the movement of the door (2). The important point is that the rotational state of the fixed piece (210) and the opening part (32) must be maintained in order to open the door (2).

[0064] When the force for rotating the opening portion (32) and the fixed portion (210) disappears, the opening portion (32) and the fixed portion (210) are returned by the return means, whereby the stopper (21) and the connecting portion (10c) are engaged, so that movement of the door (2) in the opening direction is restricted, and movement of the door (2) in the closing direction becomes free. This operational relationship is effective in preventing unauthorized intrusion from the outside.

[0065] Although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains can make various modifications and variations based on this description.

[0066] For example, the opening (32) of the handle (30) is presented as being rotated vertically with respect to the inner surface of the door (2), but may be modified to rotate parallel to the inner surface. In addition, the fixed member (210) and clip (220) that limit the rotation of the opening (32) may be replaced with other configurations.

[0067] Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims described below but also by equivalents of the claims.

Claims

1. A first locking device having a first operation function for limiting the movement of the door and a second operation function for releasing the first operation function; A double locking device for a sash door, comprising a second locking device having a third operation function for restricting the second operation function and a fourth operation function for releasing the third operation function.

2. In paragraph 1, The above first locking device includes a rail portion and an operating portion, The above rail portion is configured such that one or more connecting portions are formed continuously in the longitudinal direction and is mounted on one side of the sash. The above operating part is configured to include a handle mounted on the door, a locking gear linked to the movement of the handle, and a stopper linked to the locking gear and engaged or disengaged from the engaging part. A double locking device for a sash door in which the stopper is engaged with the coupling portion when the first operation function is performed, and the stopper is released from the rail portion when the second operation function is performed.

3. In paragraph 2, A double locking device for a sash door, wherein the second locking device includes a locking means for restricting or releasing the operation of the handle.

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