Window closing device with temperature limiting friction force

Abstract

The utility model discloses a window closing device with temperature limit friction force, which comprises a first component, a second component and a support rod, the first component comprises a support body, a sliding rack and a first self-closing mechanism, the sliding rack is slidably connected to the support body, a first end of the support rod is hinged to the support body, and a second end of the support rod is hinged to the second component. Meanwhile, a gear or semi-gear structure is formed at the first end of the supporting rod so that the first end of the supporting rod can be meshed with the sliding rack, and the first self-closing mechanism comprises a sliding block, a locking mechanism and a driving component. According to the window closing device, after a fire occurs, the locking mechanism can unlock the sliding block, the sliding rack is driven by the driving component to slide, the supporting rod is driven to swing in the process, the first component and the second component are close to each other, and finally a window sash is closed, so that the fireproof self-closing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of door and window hardware accessories, in particular to a window closer with temperature limiting friction force. Background Art

[0002] For building doors and windows, fireproof windows play an important role in preventing major losses when a fire occurs, slowing the spread of fire, including open flames, high temperatures, and thick smoke, and buying time for fire rescue. Many buildings have ordinary hinges installed on their windows, without fireproof automatic window closing function components; after the existing fireproof automatic window closing components on the market are installed, there is resistance to opening the window, and the elderly and children need a lot of effort to open the window; there is no resistance to opening the window, and in strong winds, the window sash is easily blown closed by the wind pressure, causing an impact. The Chinese patent with the patent number CN110374438A discloses a temperature-controlled door and window closing device, including a guide component; a rack component, which can reciprocate along the guide component; a rocker arm, one end of which is provided with a first rotating shaft and a gear structure meshing with the rack component; a slider, which can drive the rack component to reset along the guide component after being released; a power storage component, which is connected to the slider; a locking mechanism, including a first support seat, a second support seat, a flipping component and a temperature-sensitive glass ball, the temperature-sensitive glass ball is supported between the first support seat and the flipping component, the flipping component clamps the slider on the second support seat and makes the slider avoid the stroke of the rack component. When a fire occurs, the temperature-sensitive glass ball breaks, the locking mechanism releases the slider, and the slider drives the rack component to reset along the guide component under the action of the power storage component, and the rack component drives the rocker arm to rotate through the gear rack meshing transmission, so as to realize automatic driving of the door and window to close in the event of a fire. However, the above-mentioned closing device cannot achieve the effect of arbitrary positioning, and only relies on one set of temperature sensing units to achieve self-closing. If the temperature sensing unit fails, the fire prevention self-closing function cannot be achieved. In response to the above problems, a window closer with temperature limit friction is developed. The force value of the window sash opening or closing can be adjusted during normal use, and the window sash can be positioned arbitrarily when opened, without adding a set of independent limit wind braces; in the event of a fire, the temperature sensing element is broken by the high temperature, and the window closer generates power to automatically close the window sash, which is not affected by the conventional fine-tuning resistance during automatic closing. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and to provide a window closer with temperature-limiting friction force which is novel in technology and can realize the fire-proof self-closing function and has high reliability.

[0004] In order to achieve the above objectives, the technical solution adopted by the utility model is: a window closer with temperature limiting friction, comprising a first component, a second component and a support rod, the first component is fixedly connected to the first component, the second component is connected to the second component, the first component and the second component are respectively a window sash and a window frame, the first component comprises a support body, a sliding rack and a first self-closing mechanism, the sliding rack is slidably connected to the support body, the first end of the support rod is hinged to the support body, and the first end of the support rod is formed with a gear or a half-gear structure to enable the first end of the support rod to mesh with the sliding rack, the first self-closing mechanism comprises a slider, a locking mechanism and a driving component, the slider is slidably connected to the support body and is locked by the locking mechanism under normal conditions, the locking mechanism releases the lock of the slider in the event of fire, and the driving component drives the sliding rack to slide after the slider is unlocked to drive the support rod to swing along the closing direction of the window sash.

[0005] The beneficial effect of the utility model is that when the window closer of the utility model encounters a fire, its locking mechanism will release the lock on the slider, and the sliding rack will slide under the drive of the driving component and drive the support rod to swing in the process so that the first component and the second component are close to each other and finally the window sash is closed, thereby achieving a fire-proof self-closing effect.

[0006] Preferably, when the slider is in a locked state, a space is left between the slider and the sliding rack at the travel limit point in the direction close to the slider; the end of the support body is bolted with a pipe plug, and the pipe plug is provided with an escape groove for the sliding rack to extend out. With the above structure, the slider will not limit the sliding rod rack under normal conditions, so that the sliding rack can slide freely within its travel range. At the same time, the escape groove on the pipe plug can also allow the sliding rack to partially extend out of the support body within a certain range, thereby expanding the travel range of the sliding rack.

[0007] Preferably, the locking mechanism includes a hook, a first resistance member and a first temperature sensing unit. The hook is pivotally connected to the slider and the support body is provided with a buckle groove that is buckled with the hook. The first resistance member and the slider are slidably matched. When the slider is in a locked state, the first end of the first temperature sensing unit is in contact with the first resistance member, and the first resistance member is in contact with the hook so that the hook remains buckled with the buckle groove. Under normal circumstances, the first temperature sensing unit supports and resists the first resistance member, so that the first resistance member can resist the hook, so that the hook remains buckled with the groove. At this time, the position of the slider in the support body remains fixed, that is, the slider is in a locked state. When encountering a fire, the first temperature sensing unit is ruptured by the high temperature. After losing the support of the first temperature sensing unit, the resistance and support effect of the first resistance member on the hook also disappears. Since the hook and the slider are pivotally connected, the hook can rotate relative to the slider to escape from the buckle groove, and the locking state of the slider is released.

[0008] Preferably, the locking mechanism further includes a second abutment and a first adjustment screw, wherein the second abutment is slidably matched with the slider, the front end of the second abutment contacts the second end of the first temperature sensing unit, and the rear end of the second abutment is formed with a first guiding slope, the first adjusting screw is connected to the slider with an oblique thread and contacts the first guiding slope of the second abutment, and the support body is provided with an operating hole for exposing the first adjusting screw. By turning the first adjusting screw, the second abutment can be driven to slide along the support to adjust the pressure between the second abutment and the first temperature sensing unit to ensure that the two can contact and press each other. Since the first adjusting screw is oblique and the support body is provided with an operating hole, the first adjusting screw can be conveniently turned to rotate without disassembling the support body.

[0009] Preferably, the hook and the slider are pivotally connected via a pin, the first abutment member is provided with a waist-shaped groove, and the pin also penetrates the waist-shaped groove of the first abutment member. The cooperation between the waist-shaped groove and the pin enables the first abutment member to slide and adjust relative to the support member within a certain range.

[0010] Preferably, the driving component is a spring.

[0011] Preferably, the first component further includes a positioning block disposed between the slider and the driving component, the positioning block having a first positioning hole, and the support body having a second positioning hole, and the first positioning hole and the second positioning hole are aligned with each other when the slider is in a locked state. When the first positioning hole and the second positioning hole are aligned with each other, a pin or the like can be inserted into the first positioning hole and the second positioning hole at the same time to lock the positioning block in the current position, thereby temporarily blocking the thrust of the driving component on the slider, so as to facilitate the disassembly and installation or debugging of the driving component and the slider, and after completion, the pin inserted into the first positioning hole and the second positioning hole at the same time is pulled out to release the locking of the positioning block.

[0012] Preferably, the second component includes a sliding seat and a second self-closing mechanism, the sliding seat is slidably matched with the mounting groove of the second component, the second self-closing mechanism includes a friction resistance block, a push block, a second adjustment screw and a second temperature sensing unit, the friction resistance block is in close contact with the mounting groove and forms a friction force between the two to prevent the sliding of the sliding seat, the push block conflicts with the friction resistance block, the second adjustment screw is threadedly connected to the sliding seat, and the second temperature sensing unit is arranged between the second adjustment screw and the push block. Under normal conditions, the friction resistance block is in close contact with the mounting groove and forms a friction force between the two to prevent the sliding of the sliding seat, so that the second component is fixedly installed on the second component, thereby realizing the arbitrary positioning of the second component. When the second temperature sensing unit breaks in the event of fire, the resistance effect on the push block is cancelled, and the friction resistance block loses the resistance support effect of the push block, and the friction resistance between the friction resistance block and the mounting groove is reduced or even disappears. At this time, the second component can slide freely along the mounting groove to further ensure that the window sash can be closed after the fire.

[0013] Preferably, the friction resistance block includes a friction portion and a guide portion, the friction resistance block is formed with a second guide slope and a third guide slope on both sides in the X-axis direction, the push block is formed with a fourth guide slope that matches the second guide slope, the sliding seat is formed with a fifth guide slope that matches the third guide slope, and the friction portion presses the installation groove of the second component along the Y-axis direction. When the push block pushes the friction resistance block along the X-axis direction, the second guide slope and the fourth guide slope and the third guide slope and the fifth guide slope cooperate with each other, so that the friction resistance block moves along the Y-axis direction and finally presses the installation groove of the second component in the Y-axis direction to form friction resistance.

[0014] Preferably, the sliding seat is provided with a cover body buckled on the upper side of the sliding seat, the cover body is provided with a guide groove, and the guide groove is slidably matched with the push block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an assembly drawing of the utility model with the first component and the second component.

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 3 It is an exploded view of the utility model.

[0018] Figure 4 It is an exploded view of the slider of the utility model.

[0019] Figure 5 It is an exploded view of the second component of the utility model.

[0020] Figure 6 It is a three-dimensional structural schematic diagram of the pipe plug of the utility model.

[0021] Figure 7 It is a side sectional view of the first component of the utility model.

[0022] Figure 8 This is a top cross-sectional view of the first component and the support rod of the utility model in a normal state.

[0023] Fig. 9 It is a top sectional view of the first component of the utility model and the support rod in the self-closing state when encountering fire.

[0024] Fig.10 It is a side sectional view of the second component of the utility model.

[0025] Among them, 1-first component, 11-support body, 111-pipe plug, 1111-avoidance groove, 112-buckle groove, 113-operation hole, 114-second positioning hole, 12-sliding rack, 131-slider, 132-driving component, 133-hook, 134-first resistance member, 1341-waist groove, 135-first temperature sensing unit, 136-second resistance member, 1361-first guide slope, 137-first adjusting screw, 14-positioning block, 141- First positioning hole, 15-pin shaft, 2-second component, 21-sliding seat, 211-fifth guide slope, 22-friction resistance block, 221-friction part, 222-guide part, 2221-second guide slope, 2222-third guide slope, 23-push block, 231-fourth guide slope, 24-second adjusting screw, 25-second temperature sensing unit, 26-cover body, 261-guide groove, 3-support rod, 4-first component, 5-second component, 51-installation groove. DETAILED DESCRIPTION

[0026] The technical solution claimed for protection of the present utility model will now be further described in detail in conjunction with the accompanying drawings and specific embodiments.

[0027] See also Figures 1 to 10 As shown, the window closer in this embodiment includes a first component 1, a second component 2 and a support rod 3. The first component 1 is fixedly connected to a first component 4, and the second component 2 is connected to a second component 5. In this embodiment, the first component 4 is a window frame, and the second component 5 is a window sash.

[0028] The first component 1 includes a support body 11, a sliding rack 12 and a first self-closing mechanism.

[0029] The sliding rack 12 is slidably connected to the support body 11, and the first end of the support rod 3 is hinged to the support body 11. At the same time, the first end of the support rod 3 is formed with a gear or a half gear structure to enable the first end of the support rod 3 to engage with the sliding rack 12; the end of the support body 11 is bolted with a pipe plug 111, and the pipe plug 111 is provided with an avoidance groove 1111 for the sliding rack 12 to extend out.

[0030] The first self-closing mechanism includes a slider 131, a locking mechanism, a positioning block 14 and a driving component 132. In this embodiment, the driving component 132 is a spring.

[0031] The slider 131 is slidably connected to the support body 11 and is locked by a locking mechanism under normal conditions. In the present embodiment, when the slider 131 is in a locked state, a spacing space is left between the sliding rack 12 and the slider 131 at the travel limit point in the direction close to the slider 131; the slider 131 will not limit the sliding rod rack under normal conditions, so that the sliding rack 12 can slide freely within its travel range. At the same time, the avoidance groove 1111 on the pipe plug 111 can also allow the sliding rack 12 to partially extend out of the support body 11 within a certain range, thereby expanding the travel range of the sliding rack 12.

[0032] The locking mechanism includes a hook 133, a first abutment 134, a first temperature sensing unit 135, a second abutment 136 and a first adjusting screw 137. The hook 133 is pivotally connected to the slider 131, and the support body 11 is provided with a buckle groove 112 that is engaged with the hook 133, and the first abutment 134 is slidably engaged with the slider 131. Specifically, the hook 133 is pivotally connected to the slider 131 through a pin 15, and the first abutment 134 is provided with a waist-shaped groove 1341, and the pin 15 also passes through the waist-shaped groove 1341 of the first abutment 134. The first end of the first temperature sensing unit 135 abuts against the first abutment 134, and the first abutment 134 abuts against the hook 133 so that the hook 133 remains engaged with the buckle groove 112. The second abutment 136 is slidably matched with the slider 131, and the front end of the second abutment 136 abuts against the second end of the first temperature sensing unit 135. At the same time, the rear end of the second abutment 136 is formed with a first guiding inclined surface 1361. The first adjusting screw 137 is connected to the slider 131 with an oblique thread and abuts against it. The first guiding inclined surface 1361 of the second abutment 136 can drive the second abutment 136 to slide along the support member by turning the first adjusting screw 137 to adjust the pressure between the second abutment 136 and the first temperature sensing unit 135 to ensure that the two can abut against each other and press each other. In addition, since the first adjusting screw 137 is oblique and the support body 11 is provided with an operating hole 113, the first adjusting screw 137 can be conveniently turned to rotate without disassembling the support body 11.

[0033] The positioning block 14 is arranged between the slider 131 and the driving component 132. The positioning block 14 has a first positioning hole 141. The support body 11 has a second positioning hole 114. When the slider 131 is in a locked state, the first positioning hole 141 and the second positioning hole 114 are aligned with each other. When the first positioning hole 141 and the second positioning hole 114 are aligned with each other, a pin or the like can be inserted into the first positioning hole 141 and the second positioning hole 114 at the same time to lock the positioning block 14 in the current position, thereby temporarily blocking the thrust of the driving component 132 on the slider 131, so as to facilitate the disassembly, installation or debugging of the driving component 132 and the slider 131. After completion, the pin inserted into the first positioning hole 141 and the second positioning hole 114 at the same time is pulled out to release the locking of the positioning block 14.

[0034] The second component 2 includes a sliding seat 21 and a second self-closing mechanism. The sliding seat 21 is slidably matched with the mounting groove 51 of the second component 5. The second self-closing mechanism includes a friction resistance block 22, a push block 23, a second adjustment screw 24 and a second temperature sensing unit 25. The sliding seat 21 is provided with a cover body 26 that is buckled on the upper side of the sliding seat 21. The cover body 26 is provided with a guide groove 261, and the guide groove 261 is slidably matched with the push block 23.

[0035] The friction resistance block 22 is in close contact with the mounting groove 51 and a friction force is formed therebetween to prevent the sliding seat 21 from sliding. The push block 23 is in contact with the friction resistance block 22. The second adjustment screw 24 is threadedly connected to the sliding seat 21. The second temperature sensing unit 25 is arranged between the second adjustment screw 24 and the push block 23. Specifically, the friction resistance block 22 includes a friction portion 221 and a guide portion 222. The friction resistance block 22 is formed with a second guide inclined surface 2221 and a third guide inclined surface 2222 on both sides in the X-axis direction. The push block 23 is formed with a fourth guide inclined surface 231 that matches the second guide inclined surface 2221. The sliding seat 21 is formed with a fifth guide inclined surface 211 that matches the third guide inclined surface 2222. The friction portion 221 presses the mounting groove 51 of the second component 5 along the Y-axis direction. By turning the second adjusting screw 24, the push block 23 can be pushed to be squeezed in the direction of the friction resistance block 22. When the push block 23 pushes the friction resistance block 22 along the X-axis direction, the second guide bevel 2221 and the fourth guide bevel 231 and the third guide bevel 2222 and the fifth guide bevel 211 cooperate with each other, so that the friction resistance block 22 moves along the Y-axis direction and finally presses the installation groove 51 of the second component 5 in the Y-axis direction to form friction resistance.

[0036] When in normal state, the first temperature sensing unit 135 of the first component 1 supports and resists the first resisting member 134, so that the first resisting member 134 can resist the hook 133, so that the hook 133 keeps buckling with the groove, and the position of the slider 131 in the support body 11 remains fixed at this time, that is, the slider 131 is in a locked state, and the driving component 132 cannot push the slider 131 to slide in the direction of the sliding rack 12, and the sliding rack 12 can slide freely within its travel range without being restricted by the slider 131. The friction resistance block 22 of the second component 2 is pushed and resisted by the push block 23 and is tightly attached to the installation groove 51, and a friction force is formed between the two to prevent the sliding seat 21 from sliding, so that the second component 2 is fixedly installed on the second member 5.

[0037] When encountering fire, the first temperature sensing unit 135 of the first component 1 is ruptured by high temperature. After losing the support of the first temperature sensing unit 135, the first resistance member 134 also loses its resistance and support function on the hook 133. Since the hook 133 is pivotally connected to the slider 131, the hook 133 can rotate relative to the slider 131 to escape from the buckle groove 112, and the locking state of the slider 131 is released. Under the driving action of the driving component 132, the slider 131 pushes toward the sliding rack 12 and causes the sliding rack 12 to slide. In this process, the support rod 3 engaged with the sliding rack 12 will swing in the direction of closing the window sash and finally drive the window sash to close. The rupture of the second temperature sensing unit 25 cancels the resistance effect on the push block 23, and the friction resistance block 22 loses its resistance and support function. The friction resistance between the friction resistance block 22 and the mounting groove 51 is reduced or even disappears. At this time, the second component 2 can slide freely along the mounting groove 51 to further ensure that the window sash can be closed after encountering fire.

[0038] The embodiments described above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any technician familiar with the field can use the above disclosed technical content to make more possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, all equivalent and equivalent changes made according to the idea of ​​the present invention without departing from the content of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A window closer with temperature-limiting friction force, comprising a first component (1), a second component (2) and a support rod (3), wherein the first component (1) is fixedly connected to a first component (4), the second component (2) is connected to a second component (5), the first component (4) and the second component (5) are a window sash and a window frame respectively, and characterized in that: The first component (1) comprises a support body (11), a sliding rack (12) and a first self-closing mechanism, wherein the sliding rack (12) is slidably connected to the support body (11), the first end of the support rod (3) is hinged to the support body (11), and the first end of the support rod (3) is formed with a gear or a half-gear structure so that the first end of the support rod (3) is meshed with the sliding rack (12), the first self-closing mechanism comprises a slider (131), a locking mechanism and a driving component (132), the slider (131) is slidably connected to the support body (11) and is locked by the locking mechanism under normal conditions, the locking mechanism unlocks the slider (131) in the event of fire, and the driving component (132) drives the sliding rack (12) to slide after the slider (131) is unlocked, so as to drive the support rod (3) to swing along the closing direction of the window sash.

2. A window closer with temperature-limiting friction according to claim 1, characterized in that: When the slider (131) is in a locked state, a space is left between the slider (131) and the sliding rack (12) at a travel limit point in a direction close to the slider (131); a pipe plug (111) is bolted to the end of the support body (11), and the pipe plug (111) is provided with an avoidance groove (1111) for the sliding rack (12) to extend out.

3. The window closer with temperature-limiting friction according to claim 1, characterized in that: The locking mechanism comprises a hook (133), a first resisting member (134) and a first temperature sensing unit (135); the hook (133) is pivotally connected to the slider (131) and the support body (11) is provided with a buckling groove (112) for buckling with the hook (133); the first resisting member (134) and the slider (131) are slidably matched; when the slider (131) is in a locked state, the first end of the first temperature sensing unit (135) abuts against the first resisting member (134), and the first resisting member (134) abuts against the hook (133) so that the hook (133) and the buckling groove (112) remain buckled.

4. A window closer with temperature-limiting friction according to claim 3, characterized in that: The locking mechanism further comprises a second abutment member (136) and a first adjusting screw (137), wherein the second abutment member (136) is slidably matched with the slider (131), the front end of the second abutment member (136) abuts against the second end of the first temperature sensing unit (135), and the rear end of the second abutment member (136) is formed with a first guiding inclined surface (1361), the first adjusting screw (137) is connected to the slider (131) with an oblique thread and abuts against the first guiding inclined surface (1361) of the second abutment member (136), and the support body (11) is provided with an operating hole (113) for exposing the first adjusting screw (137).

5. The window closer with temperature-limiting friction according to claim 3, characterized in that: The hook (133) and the slider (131) are pivotally connected via a pin shaft (15); the first abutment member (134) is provided with a waist-shaped groove (1341); and the pin shaft (15) also penetrates the waist-shaped groove (1341) of the first abutment member (134).

6. The window closer with temperature-limiting friction according to claim 1, characterized in that: The driving component (132) is a spring.

7. The window closer with temperature-limiting friction according to claim 1, characterized in that: The first component (1) further comprises a positioning block (14) arranged between the slider (131) and the driving component (132), the positioning block (14) having a first positioning hole (141), and the support body (11) having a second positioning hole (114), and when the slider (131) is in a locked state, the first positioning hole (141) and the second positioning hole (114) are aligned with each other.

8. The window closer with temperature-limiting friction according to claim 1, characterized in that: The second component (2) comprises a sliding seat (21) and a second self-closing mechanism. The sliding seat (21) is slidably matched with the mounting groove (51) of the second component (5). The second self-closing mechanism comprises a friction resistance block (22), a push block (23), a second adjustment screw (24) and a second temperature sensing unit (25). The friction resistance block (22) is tightly attached to the mounting groove (51) and a friction force is formed therebetween to prevent the sliding seat (21) from sliding. The push block (23) is in contact with the friction resistance block (22). The second adjustment screw (24) is threadedly connected to the sliding seat (21). The second temperature sensing unit (25) is arranged between the second adjustment screw (24) and the push block (23).

9. The window closer with temperature-limiting friction according to claim 8, characterized in that: The friction resistance block (22) comprises a friction portion (221) and a guide portion (222); the friction resistance block (22) is formed with a second guide bevel (2221) and a third guide bevel (2222) on both sides in the X-axis direction; the push block (23) is formed with a fourth guide bevel (231) that cooperates with the second guide bevel (2221); the sliding seat (21) is formed with a fifth guide bevel (211) that cooperates with the third guide bevel (2222); and the friction portion (221) presses the mounting groove (51) of the second component (5) along the Y-axis direction.

10. The window closer with temperature-limiting friction according to claim 8, characterized in that: The sliding seat (21) is provided with a cover body (26) buckled on the upper side of the sliding seat (21), and the cover body (26) is provided with a guide groove (261), and the guide groove (261) is slidably matched with the push block (23).

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