CN209855510U - Concealed window closer - Google Patents

Abstract

The utility model provides a hidden window closer; the window closer is arranged between a door and window frame and a door and window sash and comprises a fixed seat, a moving part, a rocker arm, an elastic element and a temperature sensing part; the movable part is connected with the fixed seat to form a movable pair, and a rack is arranged on the side wall of the movable part; one end of the elastic element is connected with the movable part, and the other end of the elastic element is arranged on the fixed seat; the rocker arm is hinged with the fixed seat, and a gear part meshed with the rack is arranged at the hinged position; the temperature sensing piece is arranged in a clamping groove formed after the movable piece and the fixed seat move relatively; when the temperature is higher than the preset temperature, the temperature sensing piece deforms, the elastic element returns to enable the moving piece to move relative to the fixed seat, and the gear piece drives the rocker arm to rotate to close the door and window, so that the window closing device has universality, can adapt to door and window installation of various scenes, and does not need to damage or change the profile structure.

Description

Concealed window closer

Technical Field

The utility model relates to a fire prevention door and window field, in particular to hidden window closer.

Background

For building doors and windows, especially for fire windows installed on outer walls, the requirements for flue gas blocking and flame performance of the fire windows are high, and the fire window is prevented from causing great loss when a fire disaster happens. In order to have better fireproof performance, the fireproof window is required to have the function of automatically closing when a fire disaster happens. Meanwhile, the fireproof window is required to be flexibly opened and closed in the daily use process, and the operation is convenient.

At present, most of fireproof doors and windows in the market adopt an external window closer or a hidden window closer, and the structure of a profile needs to be destroyed and changed during installation so as to realize automatic closing in case of fire; and the existing window closer has low universality and can only adapt to partial door and window installation.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the above-mentioned technology to a certain extent. Therefore, the present invention is directed to a hidden window closer. The hidden window closer is simple in structure, universal, capable of adapting to door and window installation of various scenes and free of damage and change of a profile structure.

In order to achieve the above object, an embodiment of the present invention provides a hidden window closer, which is disposed between a door and window frame and a door and window sash, and comprises:

the fixed seat is arranged on the door and window frame or the door and window sash;

the movable piece is connected with the fixed seat to form a moving pair, and a rack is arranged on the side wall of the movable piece;

one end of the elastic element is connected with the movable piece, and the other end of the elastic element is arranged on the fixed seat; when the movable piece moves relative to the fixed seat, the elastic element is compressed or stretched;

one end of the rocker arm is hinged with the fixed seat, and a gear part meshed with the rack is arranged at the hinged position; when the fixed seat is installed on the door and window frame, the other end of the rocker arm is connected with the door and window sash; when the fixed seat is installed on the door and window sash, the other end of the rocker arm is connected with the door and window frame;

the temperature sensing piece is arranged in a clamping groove formed after the movable piece and the fixed seat move relatively; when the temperature is higher than the preset temperature, the temperature sensing piece deforms, the elastic element returns to enable the moving piece to move relative to the fixed seat, and the gear piece drives the rocker arm to rotate to close the door window.

When the hidden window closer provided by the embodiment of the utility model is used, for example, when a door or a window is opened, the moving part is driven to move by the rotation of the rocker arm to form a clamping groove with the fixed seat, the temperature sensing part is placed in the clamping groove, and at the moment, the elastic element connected with the moving part is compressed or stretched; when the temperature of the temperature sensing piece is higher than the preset temperature, namely when a fire breaks out, the temperature sensing piece deforms, so that the elastic element releases the elastic force to return, and the rocker arm is driven to rotate to close the door and window sash through the movement of the moving piece; so that the device has fewer components to complete the flexible opening and closing of the door and the window. The movement of the movable part is converted into the rotation of the rocker arm through the rack and the gear piece, or the rotation of the rocker arm is converted into the movement of the movable part, so that the rotation direction of the rocker arm can be changed, the installation positions of the door and window sash can be diversified, and for example, the change of the position of the clamping groove, the change of the orientation of the rack and the like can be realized; therefore, the universality of the hidden window closer is improved, the hidden window closer can adapt to the installation of doors and windows in various scenes, and the structure of the profile does not need to be damaged or changed.

In addition, according to the hidden window closer provided by the above embodiments of the present invention, the hidden window closer may further have the following additional technical features:

according to the embodiment of the utility model provides a, be equipped with a lug on the gear spare, the lug with the rocking arm offsets, so that the rocking arm with gear spare one-way synchronous revolution.

According to the embodiment of the present invention, the clamping groove has a fixed inner wall disposed on the fixed seat and a movable inner wall disposed on the movable member; and the fixed inner wall is provided with an adjusting screw for adjusting the distance between the fixed inner wall and the movable inner wall.

According to the utility model discloses, the draw-in groove sets up the moving part is close to the one end of rack or setting are in the moving part is kept away from the one end of rack.

According to the embodiment of the utility model provides a, the temperature-sensing spare is temperature-sensing glass ball or fusible metalwork.

According to the utility model discloses embodiment, elastic element is extension spring or spring.

According to the embodiment of the present invention, the fixing base has a first side end and a second side end which are oppositely disposed, and both the first side end and the second side end are parallel to the horizontal axis of the fixing base; the tooth tips on the rack face the first side end or the second side end; when the tooth tips on the rack face to the first side end, the door and window sash connected with the rocker arm is positioned at the second side end; when the tooth tips on the rack face to the second side end, the door and window sash connected with the rocker arm is positioned at the first side end.

According to the utility model discloses the gear piece includes master gear and drive gear, the master gear sets up articulated department, drive gear part with the rack toothing, part with the master gear meshing, in order to transmit power between the master gear with the rack.

According to an embodiment of the invention, the main gear and the transmission gear are on the same horizontal axis, and the teeth of a partial area on the main gear are eliminated, the partial area being opposite to the side where the rack is located.

According to the utility model discloses the embodiment, the master gear with the inclination sets up between the drive gear.

Drawings

Fig. 1 is a schematic view of a first hidden window closer according to embodiment 1 of the present invention;

fig. 2 is a schematic view of a second concealed window closer according to embodiment 1 of the present invention;

fig. 3 is a schematic view of a third hidden window closer according to embodiment 1 of the present invention;

fig. 4 is a schematic view of a fourth hidden window closer according to embodiment 1 of the present invention;

fig. 5 is a schematic view of a first hidden window closer according to embodiment 2 of the present invention;

fig. 6 is a schematic view of a second hidden window closer according to embodiment 2 of the present invention;

fig. 7 is a schematic view of a third hidden window closer according to embodiment 2 of the present invention;

fig. 8 is a schematic view of a fourth hidden window closer according to embodiment 2 of the present invention;

fig. 9 is a schematic view of a fifth hidden window closer according to embodiment 2 of the present invention;

fig. 10 is a schematic view of a sixth hidden window closer according to embodiment 2 of the present invention;

fig. 11 is a schematic view of a seventh hidden window closer according to embodiment 2 of the present invention;

fig. 12 is a schematic view of an eighth hidden window closer according to embodiment 2 of the present invention;

fig. 13 is a schematic view of a first hidden window closer according to embodiment 3 of the present invention;

fig. 14 is a schematic view of a second concealed window closer according to embodiment 3 of the present invention;

fig. 15 is a schematic view of a third hidden window closer according to embodiment 3 of the present invention;

fig. 16 is a schematic view of a fourth hidden window closer according to embodiment 3 of the present invention;

fig. 17 is a schematic view of a hidden window closer according to embodiment 4 of the present invention;

description of reference numerals: the concealed window closer 1, the fixed seat 11, the boss 111, the flange 112, the first side end 113, the second side end 114, the head end 115, the tail end 116, the movable member 12, the rack 121, the rocker arm 13, the temperature sensing member 14, the compression spring 15, the gear member 16, the projection 161, the main gear 162, the transmission gear 163, the slot 17, the adjusting screw 171, and the tension spring 18.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In order to better understand the technical scheme, the technical scheme is described in detail in the following with reference to the accompanying drawings 1-17 of the specification and a specific embodiment.

Example 1

As shown in fig. 1 to 4, a hidden window closer 1 according to an embodiment of the present invention is disposed between a window and door frame and a window and door sash in a door or a window; the hidden window closer 1 comprises a fixed seat 11, a movable piece 12, a rocker arm 13, a temperature sensing piece 14, a pressure spring 15, a gear piece 16 and a clamping groove 17. The fixed seat 11 can be arranged on a door and window frame and can also be arranged on a door and window sash; in the present embodiment, the fixing seat 11 is mounted on the door and window frame; the movable piece 12 is connected with the fixed seat 11 to form a moving pair, and a rack 121 is arranged on part of the side wall of the movable piece 12; one end of the pressure spring 15 is connected with the movable part 12, and the other end is arranged on the fixed seat 11; when the movable piece 12 moves relative to the fixed seat 11, the compression spring 15 is compressed; one end of the rocker arm 13 is connected with the door and window sash, the other end of the rocker arm is hinged with the fixed seat 11, and a gear piece 16 meshed with the rack 121 is arranged at the hinged position; the temperature sensing element 14 is arranged in a clamping groove 17 formed after the moving element 12 and the fixed seat 11 move relatively; when the temperature is higher than the preset temperature, the temperature sensing piece 14 deforms, the pressure spring 15 releases the elastic force to return, the movable piece 12 moves relative to the fixed seat 11, and the gear piece 16 drives the rocker arm 13 to rotate to close the door and window sash.

Specifically, the fixing seat 11 is a long stainless steel or aluminum alloy block, a boss 111 is convexly arranged on the side wall of the fixing seat 11 of the stainless steel or aluminum alloy block along the length direction, and the boss 111 enables the top surface of the fixing seat 11 to form a step-shaped structure; then, the fixed seat 11 is provided with a flange 112 on the side wall opposite to the boss 111, and the flange 112 and the boss 111 enclose the fixed seat 11 as a track capable of slidably connecting the movable member 12, so that the movable member 12 and the fixed seat 11 are slidably connected to form a moving pair. In the present embodiment, the movable member 12 has a certain height, the rack 121 is disposed on a side of the movable member 12 close to the flange 112, and the gear member 16 is disposed on the boss 111, so that the rack 121 can be always engaged with the gear member 16.

The gear member 16 may be a gear structure in this embodiment, and the gear is disposed on the boss 111 coaxially with the rocker arm 13, so that the rocker arm 13 may drive the gear member 16 to rotate or the gear member 16 may drive the rocker arm 13 to rotate. In order to ensure that the gear member 16 and the rocker arm 13 can rotate synchronously in one direction, a projection 161 is arranged on the gear member 16, and the projection 161 abuts against the rocker arm 13, so that when the rocker arm 13 rotates, the gear member 16 is driven to rotate by the side wall of the rocker arm 13 abutting against the projection 161, and the rocker arm 13 and the gear member 16 rotate synchronously in one direction.

The swing arm 13 is a connection between the door and window frames and the door and window sashes for supporting the door and window when opened. One end of the rocker arm 13 is arranged on the door and window sash through a sliding block, the other end of the rocker arm is hinged on the fixed seat 11, and the other end of the rocker arm 13 is provided with a side wall which is abutted against the convex block 161.

The movable member 12 and the fixed member 11 move relatively to each other to form a slot 17 for placing the temperature sensing element 14. Specifically, the clamping groove 17 has a fixed inner wall arranged on the fixed seat 11 and a movable inner wall arranged on the movable member 12; the fixed inner wall is provided with an adjusting screw 171 for adjusting the distance between the fixed inner wall and the movable inner wall; the temperature sensing member 14 can be adapted to various models by setting the adjusting screw 171.

The temperature sensing member 14 is clamped in the card slot 17 in this embodiment. When the temperature is higher than the preset temperature, the temperature sensing part 14 deforms to release the elasticity of the pressure spring 15, and the temperature sensing part 14 can be a temperature-sensitive glass ball or a fusible metal part. Temperature sensing glass ball or fusible metalwork can the temperature-sensing when the conflagration breaks out, when the temperature is greater than preset temperature, can blast, or melt for the activity inner wall does not have the barrier force, and through the elasticity release of pressure spring 15, drive moving part 12 removes, thereby makes rocking arm 13 rotatory door and window of closing.

When the hidden window closer 1 is used, a door and a window are manually pushed and opened by a person, at the moment, one end of the rocker arm 13 slides along a track on a door and window sash, the other end of the rocker arm rotates at a hinged position and drives the gear piece 16 to rotate, so that the rack 121 drives the moving piece 12 to move, the moving piece 12 and the fixed seat 11 form a clamping groove 17 after relative movement, and at the moment, the pressure spring 15 is compressed until the temperature sensing piece 14 is manually clamped in the clamping groove 17; at this time, the door and window sash is fixed and in an open state. When a fire disaster happens, the indoor temperature rises, and when the preset temperature of the temperature sensing piece 14 is reached, the temperature sensing piece 14 is exploded or melted, so that the movable inner wall loses the blocking force, the movable piece 12 is driven to move under the elastic action of the pressure spring 15, the movable piece 12 drives the gear piece 16 to rotate through the rack 121, and then the rocker arm 13 is driven to rotate to close the door and window sash.

In the present embodiment, the fixing base 11 has a first side end 113 and a second side end 114 disposed oppositely, and a head end 115 and a tail end 116 disposed oppositely, and the first side end 113 and the second side end 114 are both parallel to the horizontal axis of the fixing base 11. The tip of the rack gear 121 may be disposed toward the first side end 113, and at this time, the boss 111 is disposed at the first side end 113 and the door window sash connected to the swing arm 13 is disposed at the second side end 114; the point of the rack 121 may also be disposed toward the second side end 114, where the boss 111 is disposed and the door sash connected to the swing arm 13 is located at the first side end 113. In addition, the locking groove 17 may be disposed at an end of the movable member 12 close to the rack 121, i.e., the head end 115 of the fixed seat 11; or at the end of the movable member 12 remote from the rack 121, i.e. at the rear end of the fixed seat 11. When the clamping groove 17 is arranged at the head end 115, one end of the movable member 12, which is far away from the rack 121, is directly connected with the pressure spring 15, at this time, the movable inner wall is arranged on the end surface of one end of the movable member 12, which is close to the rack 121, and the pressure spring 15 is compressed from the head end 115 to the tail end 116, so that the movable inner wall is separated from the fixed inner wall to form the clamping groove 17; when the clamping groove 17 is arranged at the tail end 116, one end of the movable piece 12, which is far away from the rack 121, is connected with the pressure spring 15 through the connecting rod, at this time, the movable inner wall is arranged on the end surface of the connecting rod, and the pressure spring 15 is compressed from the tail end 116 to the head end 115, so that the movable inner wall and the fixed inner wall are separated to form the clamping groove 17.

With reference to fig. 1, the concealed window closer 1 is mounted on the upper edge of a window and door with the window and door frame in the direction of the first side end 113. The slot 17 is arranged at the head end 115, the boss 111 is arranged at the first side end 113, and the door and window sash connected with the rocker arm 13 is arranged at the second side end 114; thus, the door sash is mounted on a vertical line perpendicular to the horizontal axis of the fixing base 11, and in the direction of the rear end 116. With reference to fig. 2, the concealed window closer 1 is mounted on the upper edge of a window and door with the window and door frame in the direction of the first side end 113. The slot 17 is arranged at the tail end 116, the boss 111 is arranged at the first side end 113, and the door window sash connected with the rocker arm 13 is arranged at the second side end 114; thus, the door sash is mounted in the direction of the head end 115 on a vertical line perpendicular to the horizontal axis of the fixing base 11. With reference to fig. 3, the concealed window closer 1 is mounted on the upper edge of a window and door with the window and door frame in the direction of the second side end 114. The clamping groove 17 is arranged at the head end 115, the boss 111 is arranged at the second side end 114, and the door window sash connected with the rocker arm 13 is arranged at the first side end 113; thus, the door sash is mounted on a vertical line perpendicular to the horizontal axis of the fixing base 11, and in the direction of the rear end 116. With reference to fig. 4, the concealed window closer 1 is mounted on the upper edge of a window and door with the window and door frame in the direction of the second side end 114. The slot 17 is arranged at the tail end 116, the boss 111 is arranged at the second side end 114, and the door window sash connected with the rocker arm 13 is arranged at the first side end 113; thus, the door sash is mounted in the direction of the head end 115 on a vertical line perpendicular to the horizontal axis of the fixing base 11. Therefore, the rotating direction of the rocker arm 13 can be changed through the rack 131 and the gear piece 16, and the installation positions of the door and window sashes can be diversified, so that the universality of the hidden window closer is improved, the hidden window closer can adapt to the installation of doors and windows in various scenes, and the structure of a section bar does not need to be damaged or changed.

Example 2

As shown in fig. 5 to 12, the present embodiment is substantially the same in structure and principle as embodiment 1, and the same points are not described, and only different points are described, except that the gear member 16 adopts a double gear structure, specifically, the gear member 16 includes a main gear 162 and a pinion gear 163, the main gear 162 is disposed at the hinge, and the pinion gear 163 is partially engaged with the rack gear 121 and partially engaged with the main gear 162 to transmit power between the main gear 162 and the rack gear 121. That is, the main gear 162 and the transfer gear 163 are both provided on the boss 111, and the main gear 162 is coaxially hinged with the rocker arm 13, and the transfer gear 163 is provided at a side of the main gear 162. In the present embodiment, the main gear 162 and the transfer gear 163 may be on the same horizontal axis; the main gear 162 may also be disposed at an oblique angle to the transfer gear 163.

With reference to fig. 5, the concealed window closer 1 is mounted on the upper edge of a window and door with the window and door frame in the direction of the first side end 113. The slot 17 is arranged at the head end 115, the boss 111 is arranged at the first side end 113, the door and window sash connected with the rocker arm 13 is arranged at the second side end 114, the main gear 162 is inclined to the transmission gear 163, and the main gear 162 is arranged at the left side of the transmission gear 163; thus, the door sash is mounted in the direction of the head end 115 on a vertical line perpendicular to the horizontal axis of the fixing base 11. With reference to fig. 6, the concealed window closer 1 is mounted on the upper edge of a window and door with the window and door frame in the direction of the first side end 113. The slot 17 is arranged at the tail end 116, the boss 111 is arranged at the first side end 113, the door and window sash connected with the rocker arm 13 is arranged at the second side end 114, the main gear 162 is inclined to the transmission gear 163, and the main gear 162 is arranged at the left side of the transmission gear 163; thus, the door sash is mounted on a vertical line perpendicular to the horizontal axis of the fixing base 11, and in the direction of the rear end 116. With reference to fig. 7, the concealed window closer 1 is mounted on the upper edge of a window and door with the window and door frame in the direction of the first side end 113. The clamping groove 17 is arranged at the head end 115, the boss 111 is arranged at the first side end 113, the door and window sash connected with the rocker arm 13 is positioned at the second side end 114, the main gear 162 and the transmission gear 163 are positioned on the same horizontal axis, and the main gear 162 is positioned at the right side of the transmission gear 163; thus, the door sash is mounted in the direction of the head end 115 on a vertical line perpendicular to the horizontal axis of the fixing base 11. With reference to fig. 8, the concealed window closer 1 is mounted on the upper edge of a window and door with the window and door frame in the direction of the first side end 113. The slot 17 is arranged at the tail end 116, the boss 111 is arranged at the first side end 113, the door and window sash connected with the rocker arm 13 is positioned at the second side end 114, the main gear 162 and the transmission gear 163 are positioned on the same horizontal axis, and the main gear 162 is positioned at the right side of the transmission gear 163; thus, the door sash is mounted on a vertical line perpendicular to the horizontal axis of the fixing base 11, and in the direction of the rear end 116. With reference to fig. 9, the concealed window closer 1 is mounted on the upper edge of a window and door with the window and door frame in the direction of the second side end 114. The slot 17 is arranged at the head end 115, the boss 111 is arranged at the second lateral end 114, the door and window sash connected with the rocker arm 13 is positioned at the first lateral end 113, the main gear 162 is inclined to the transmission gear 163, and the main gear 162 is positioned at the left side of the transmission gear 163; thus, the door sash is mounted in the direction of the head end 115 on a vertical line perpendicular to the horizontal axis of the fixing base 11. With reference to fig. 10, the concealed window closer 1 is mounted on the upper edge of a window and door with the window and door frame in the direction of the second side end 114. The slot 17 is arranged at the tail end 116, the boss 111 is arranged at the second lateral end 114, the door and window sash connected with the rocker arm 13 is positioned at the first lateral end 113, the main gear 162 is inclined to the transmission gear 163, and the main gear 162 is positioned at the left side of the transmission gear 163; thus, the door sash is mounted on a vertical line perpendicular to the horizontal axis of the fixing base 11, and in the direction of the rear end 116. With reference to fig. 11, the concealed window closer 1 is mounted on the upper edge of a window and door with the window and door frame in the direction of the second side end 114. The clamping groove 17 is arranged at the head end 115, the boss 111 is arranged at the second side end 114, the door and window sash connected with the rocker arm 13 is positioned at the first side end 113, the main gear 162 and the transmission gear 163 are positioned on the same horizontal axis, and the main gear 162 is positioned at the right side of the transmission gear 163; thus, the door sash is mounted in the direction of the head end 115 on a vertical line perpendicular to the horizontal axis of the fixing base 11. With reference to fig. 12, the concealed window closer 1 is mounted on the upper edge of a window and door with the window and door frame in the direction of the second side end 114. The clamping groove 17 is arranged at the tail end 116, the boss 111 is arranged at the second side end 114, the door and window sash connected with the rocker arm 13 is positioned at the first side end 113, the main gear 162 and the transmission gear 163 are positioned on the same horizontal axis, and the main gear 162 is positioned at the right side of the transmission gear 163; thus, the door sash is mounted on a vertical line perpendicular to the horizontal axis of the fixing base 11, and in the direction of the rear end 116. Therefore, the installation mode of the door and window sash can be further increased through the double-gear structure, the universality of the hidden window closer is improved, the hidden window closer can adapt to door and window installation of various scenes, and the structure of the section bar does not need to be damaged or changed.

Example 3

As shown in fig. 13 to 16, the structure and principle of the present embodiment are substantially the same as those of embodiment 2, and the same points are not described, but only different points are described, except that a dual gear structure is provided, in order to prevent the main gear 162 from contacting the rack 121 or the flange 112 and interfering with the rotation of the main gear 162, a space of the boss 111 is increased so that the main gear 162 is inclined at an angle to the transmission gear 163, thereby avoiding interference with the main gear 162; in the case of the structure in which the main gear 162 and the transfer gear 163 are disposed in the same horizontal line, the tooth space is increased, thereby causing various disadvantages. For this, the main gear 162 of this embodiment has a partial region where the teeth are removed, the partial region being opposite to the side end where the rack gear 121 is located, and the length of the rack gear 121 being cut off to the pinion gear 163; thus, the main gear 162 is engaged with the transmission gear 163, and the main gear 162 is prevented from contacting the rack 121; the running of the gear piece 16 is ensured under the condition of not increasing the space of the fixed seat 11 and not increasing the space between the teeth.

Example 4

As shown in fig. 17, the structure and principle of the present embodiment are substantially the same as those of embodiment 1, and the same points are not described, but only different points are described, wherein the elastic element in the present embodiment is a tension spring 18, and the tension spring 18 is directly connected with one end of the movable member 12 away from the rack 121 or is connected with one end of the movable member 12 away from the rack 121 through a connecting rod; so that the moving part 12 moves to drive the tension spring 18 to stretch, and the elastic force of the tension spring 18 releases the return to drive the moving part 12 to move.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. Hidden window closer, set up between door and window frame and door and window fan, its characterized in that, hidden window closer includes:

the fixed seat is arranged on the door and window frame or the door and window sash;

the movable piece is connected with the fixed seat to form a moving pair, and a rack is arranged on the side wall of the movable piece;

one end of the elastic element is connected with the movable piece, and the other end of the elastic element is arranged on the fixed seat; when the movable piece moves relative to the fixed seat, the elastic element is compressed or stretched;

one end of the rocker arm is hinged with the fixed seat, and a gear part meshed with the rack is arranged at the hinged position; when the fixed seat is installed on the door and window frame, the other end of the rocker arm is connected with the door and window sash; when the fixed seat is installed on the door and window sash, the other end of the rocker arm is connected with the door and window frame;

the temperature sensing piece is arranged in a clamping groove formed after the movable piece and the fixed seat move relatively; when the temperature is higher than the preset temperature, the temperature sensing piece deforms, the elastic element returns to enable the moving piece to move relative to the fixed seat, and the gear piece drives the rocker arm to rotate to close the door window.

2. The hidden window closer of claim 1, wherein a protrusion is provided on the gear member, the protrusion abutting against the rocker arm to allow the rocker arm and the gear member to rotate synchronously in one direction.

3. The hidden window closer of claim 1, wherein the slot has a fixed inner wall disposed on the fixed base and a movable inner wall disposed on the movable member; and the fixed inner wall is provided with an adjusting screw for adjusting the distance between the fixed inner wall and the movable inner wall.

4. The concealed window closer of claim 1, wherein the catch is disposed at an end of the movable member proximate to the rack or at an end of the movable member distal from the rack.

5. The concealed window closer of claim 1, wherein the temperature-sensitive member is a temperature-sensitive glass sphere or a fusible metal member.

6. The hidden window closer of claim 1, wherein the elastic element is a tension spring or a spring.

7. The hidden window closer of claim 1, wherein the fixed base has a first side end and a second side end disposed opposite to each other, the first side end and the second side end being parallel to a horizontal axis of the fixed base; the tooth tips on the rack face the first side end or the second side end; when the tooth tips on the rack face to the first side end, the door and window sash connected with the rocker arm is positioned at the second side end; when the tooth tips on the rack face to the second side end, the door and window sash connected with the rocker arm is positioned at the first side end.

8. The concealed window closer according to claim 1, wherein the gear member includes a main gear provided at the hinge, and a transmission gear partially engaged with the main gear to transmit power between the main gear and the rack gear.

9. The concealed window closer of claim 8, wherein the main gear and the transmission gear are on the same horizontal axis, and wherein a partial region of the main gear, which is opposite to the side end where the rack is located, has teeth eliminated.

10. The concealed window closer of claim 8, wherein the main gear and the transmission gear are disposed at an oblique angle.