Plane handle, automatic lock and door and window

Abstract

The utility model discloses a plane handle, an automatic lock and a door and window, the plane handle comprises a handle shell, a handle bar, an elastic piece and a gear assembly, the front face of the handle shell is provided with a first containing cavity; the pull handle is arranged in the first accommodating cavity and is provided with a rotary positioning end and a free end, and the rotary positioning end is rotationally connected to two sides of the first accommodating cavity and is provided with a plurality of gear tooth structures; the gear assembly is arranged on the back face of the handle shell and provided with a gear, and the gear is meshed with the gear tooth structure. The elastic piece is connected between the handle shell and the handle bar to force the handle shell and the handle bar to be elastically attached. According to the plane handle, the automatic lock and the door and window, the handle bar is hidden in the handle shell, and the defect that people accidentally collide with the handle is overcome; a rotating gear assembly is arranged on the back face of the shell, and the technical scheme of extremely narrow door and window sash profile hardware linkage in the building industry is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware, in particular to a flat handle, an automatic lock and doors and windows. Background Art

[0002] Existing folding doors are divided into exposed hinge type folding doors and hidden hinge type folding doors with a middle column. Door handles, pull handles, toggle handles, etc. are assembled on the surface of the profiles. The handles or pull handles are in a protruding state, affecting the indoor or outdoor space and being easy to hit people, thus affecting the appearance beauty of the doors and windows.

[0003] In the architectural industry, the design of the profiles of door and window sashes is getting narrower and narrower. A glass groove is provided on one side of the profile, and the glass installation groove has certain depth and width limitations. It is necessary to consider the installation and normal use of the hardware in the limited size space, and a hardware lock solution for extremely narrow sash profiles needs to be provided.

[0004] Therefore, the above technical problems need to be solved. Summary of the Invention

[0005] The utility model aims at the above technical problems and provides a flat handle, an automatic lock and doors and windows. The handle is hidden in the handle housing, solving the defect that people accidentally hit the handle; a rotating gear assembly is arranged on the back of the housing, providing a technical solution for the hardware linkage of door and window sashes with an increasingly narrow design in the architectural industry.

[0006] To achieve the above object, the technical solution of the utility model is as follows:

[0007] A flat handle includes a handle housing, a handle, an elastic member and a gear assembly. A first accommodating cavity is provided on the front surface of the handle housing; the handle is placed in the first accommodating cavity, having a rotating positioning end and a free end. The rotating positioning end is rotatably connected in the first accommodating cavity, and several tooth structures are provided at this end; the gear assembly is arranged on the back of the handle housing and has a gear which meshes with the tooth structures; the elastic member is connected between the handle housing and the handle, forcing the two to be elastically attached.

[0008] The flat handle accommodates the handle in the first accommodating cavity of the handle housing, realizing the hiding of the handle in the handle housing and solving the defect that people accidentally hit the handle; a rotating gear assembly is arranged on the back of the handle housing, enabling the flat handle to be applicable to the installation and use of extremely narrow door sash profiles. The gear assembly can be installed on the left or right side of the handle housing according to specific requirements, and can be translated and reversed by removing the mounting screws above, and can also be installed in the middle. The axis position of the gear is connected to an external transmission rod to form a transmission chain, and the rotation of the gear drives the external transmission rod to move up and down, realizing the opening or closing of the door lock.

[0009] A further optimized solution further includes a handle rotating shaft, which penetrates through the rotation positioning end of the handle and the first accommodation cavity to rotatably connect the two. The handle rotates around the handle rotating shaft, and its free end can swing back and forth within a certain angle. Pulling up and putting down the free end realizes the opening and closing states.

[0010] In a further optimized solution, the elastic member is a torsion spring. A torsion spring installation groove is provided at the rotation positioning end of the handle. The torsion spring is located in the torsion spring installation groove and passes through the handle rotating shaft; one end of the torsion spring is elastically pressed against the inner wall of the torsion spring installation groove, and the other end is elastically pressed against the handle housing. Using a torsion spring as the elastic member is convenient for use and installation, and the torsion spring is hidden and installed in the torsion spring installation groove without being exposed on the surface of the handle, making the appearance beautiful.

[0011] In a further optimized solution, the gear is provided with meshing teeth on a partial circumference. Since the function of the gear only requires a small amount of back-and-forth rotation and does not require a full rotation, the gear can be designed as a partial gear structure with partial meshing teeth, which can save the processing cost of the gear, save the installation space, and make the external structure of the gear assembly more compact.

[0012] In a further optimized solution, the gear assembly further includes a gear seat and a gear seat cover plate. Convex columns are respectively provided at both ends of the gear and are rotatably connected between the gear seat and the gear seat cover plate. The gear is provided with a square hole to connect with an external square convex column to form a transmission chain. Through holes are respectively provided on the gear seat and the gear seat cover plate to install the convex columns at both ends of the gear, and the structure is simple and the installation is convenient.

[0013] A further optimized solution further includes an eccentric lock post and a lock pin. A lock core hole is provided on the front surface of the handle housing, and a second accommodation cavity is provided on its back surface; the eccentric lock post and the lock pin are placed in the second accommodation cavity, and one end of the eccentric lock post passes through the lock core hole; the rotation of the eccentric lock post drives the lock pin to move up and down, and one end of the lock pin is caught in or leaves the position between the two tooth structures. This flat handle can be locked. The eccentric lock post is sleeved into the lock core hole on the front surface of the handle housing, and is rotationally controlled by setting the special-shaped hole on the front surface of the eccentric lock post and the corresponding special-shaped key; it can prevent children from misoperating and has the function of a child lock, and can also be used for anti-theft or meet other safety requirements.

[0014] In a further optimized solution, the eccentric lock post is provided with a guide post deviating from the center line, and the lock pin is provided with a long slot. The guide post is located in the long slot. When the eccentric lock post rotates, its eccentric guide post has a certain range of horizontal and vertical displacements. The long slot of the lock pin cooperates with the guide post to meet the horizontal displacement, so the guide post can drive the lock pin to move up and down.

[0015] For a further optimized solution, the locking pin is provided with a through hole, and positioning steel balls are respectively arranged at both ends inside the through hole, and a positioning spring is arranged in the middle; on both sides of the second accommodation cavity, two pairs of positioning grooves facing each other are respectively provided, and the positioning steel balls are located in the positioning grooves. The two pairs of positioning grooves are respectively in the state of the locking pin being opened or closed. The outer shape structure of the positioning groove is adapted to the positioning steel ball. During the up and down movement of the locking pin, the positioning steel ball is snapped into the positioning groove under the elastic force of the middle positioning spring to realize the positioning of the locking pin.

[0016] For a further optimized solution, one end of the handle housing is provided with an inverted buckle that is snapped into the fixed edge of the profile. The provision of the inverted buckle enables the handle housing to be clamped in the profile, and then at the other end, screw holes are provided on the side, and the handle is completely fixed by screws, which is simple, convenient and fast to operate.

[0017] For a further optimized solution, a soft rubber plug that fits the pull handle is arranged in the first accommodation cavity. The provision of the soft rubber plug enables the pull handle to have a buffering process when rebounding under the action of elastic force, avoiding damage to the surfaces of the contacting parts and also eliminating the sound of mutual collision.

[0018] An automatic lock includes the planar handle as described in any one of the above, and a transmission mechanism is connected to the axis position of the gear, and the transmission mechanism is connected to an automatic locking bolt.

[0019] For a further optimized solution, the automatic locking bolt includes a fixed base, a bolt lock tongue and a compression spring. The fixed base is fixed, one end of the bolt lock tongue is provided with an inclined arc surface or an inclined surface for extrusion and positioning and locking, the bolt lock tongue is provided with a receiving cavity for receiving the fixed base, and the compression spring is arranged in the receiving cavity and pressed against the end surface of the fixed base. The bolt lock tongue moves back and forth relative to the fixed base and is limited in position.

[0020] The fixed base arranged at the bottom of the bolt lock tongue of the automatic locking bolt is fixed in the profile groove by screws, and a compression spring is arranged inside to enable the bolt lock tongue to move up and down within a limited range of activities. The opening of the door and window sash is realized by driving the bolt lock tongue through the handle, and the reset is carried out by the compression spring. When the door and window sash is closed, the bolt automatically locks the door and window.

[0021] A door and window includes a door and window sash, and the above-mentioned automatic lock is installed on the door and window sash.

[0022] The utility model has the following technical advantages compared with the prior art:

[0023] 1. The flat handle, automatic lock and doors and windows accommodate the handle in the first accommodation cavity of the handle housing, realizing the hiding of the handle in the handle housing and solving the defect that people accidentally bump into the handle. A rotating gear assembly is arranged on the back of the handle housing, enabling the flat handle to be suitable for the installation and use of extremely narrow door leaf profiles. The gear assembly can be installed on the left or right side of the handle housing according to specific requirements, and can be translated and reversed by removing the mounting screws above, and can also be installed in the middle.

[0024] 2. The flat handle, automatic lock and doors and windows are designed with a partial gear structure with partially meshing teeth for the gear, which can save the processing cost of the gear, save the installation space, and make the external structure of the gear assembly more compact.

[0025] 3. The flat handle, automatic lock and doors and windows can be equipped with a lock. The eccentric lock post is sleeved into the lock core hole on the front of the handle housing, and is rotationally controlled by setting the special-shaped hole on the front of the eccentric lock post and the corresponding special-shaped key. It can prevent children from accidentally operating and has the function of a child lock, can also be used for anti-theft or meet other safety requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a perspective view of the first embodiment of a flat handle of the present utility model;

[0027] Figure 2 is Figure 1 a perspective view from another direction;

[0028] Figure 3 is Figure 4 the right view of;

[0029] Figure 4 is Figure 1 the front view of;

[0030] Figure 5 is Figure 4 the A-A sectional view of;

[0031] Figure 6 is Figure 4 the top view of;

[0032] Figure 7 is Figure 8 the right view of;

[0033] Figure 8 is Figure 1 the front view of the flat handle with the handle pulled up, i.e., the handle open state;

[0034] Figure 9 is Figure 8 the left view of;

[0035] Figure 10 isFigure 1 Stereogram of the handle of the flat handle being pulled up, i.e., the handle in the open state;

[0036] Figure 11 is Figure 1 Stereogram of the handle housing in

[0037] Figure 12 is Figure 1 Stereogram seen from the back;

[0038] Figure 13 is Figure 1 Exploded view of

[0039] Figure 14 is Figure 1 Another exploded view of

[0040] Figure 15 Stereogram of the second embodiment of the flat handle of the present utility model;

[0041] Figure 16 is Figure 15 Stereogram in another direction;

[0042] Figure 17 is Figure 18 Right view of

[0043] Figure 18 is Figure 15 Front view of

[0044] Figure 19 is Figure 18 Sectional view B - B of

[0045] Figure 20 is Figure 18 Sectional view C - C of

[0046] Figure 21 is Figure 18 Rear view of

[0047] Figure 22 is Figure 17 Sectional view D - D of

[0048] Figure 23 is Figure 24 Right view of

[0049] Figure 24 is Figure 15 Front view of the handle of the flat handle being pulled up, i.e., the handle in the open state;

[0050] Figure 25 is Figure 24 Left view of

[0051] Figure 26 is Figure 15A three-dimensional diagram of a flat handle with the handle pulled up, that is, the handle in an open state;

[0052] Figure 27 yes Figure 15 A three-dimensional view of a handle housing;

[0053] Figure 28 yes Figure 15 Another stereoscopic view of the handle housing;

[0054] Figure 29 yes Figure 15 Exploded diagram of

[0055] Figure 30 yes Figure 15 Another exploded view of

[0056] Figure 31 It is an embodiment of a door and window of the utility model;

[0057] Figure 32 It is an embodiment of an automatic lock of the utility model;

[0058] Figure 33 yes Figure 32 A perspective view of the automatic locking bolt;

[0059] Figure 34 yes Figure 33 Exploded diagram.

[0060] In the figure: the handle housing 1, the first accommodating chamber 1a, the second accommodating chamber 1b, the lock core hole 1c, the positioning groove 1d, the undercut position 1e, the positioning hole 1f, the pull handle 2, the rotating positioning end 2a, the free end 2b, the gear structure 2c, the torsion spring installation groove 2d, the elastic member 3, the gear assembly 4, the gear 4a, the meshing teeth 4a1, the boss 4a2, the square hole 4a3, the gear seat 4b, the gear seat cover 4c, the positioning column 4e, the handle shaft 5, the eccentric lock column 6, the guide column 6a, the lock pin 7, the long hole 7a, the through hole 7b, the positioning steel ball 7c, the positioning spring 7d, the soft rubber plug 8, the handle sleeve 9, the handle housing cover 10, the transmission mechanism 11, the transmission box 11a, the transmission rod 11b, the automatic locking pin 12, the fixed base 12a, the pin lock tongue 12b, the compression spring 12c, the inclined arc surface 12d, and the accommodating chamber 12e. DETAILED DESCRIPTION

[0061] The present invention will be further described in detail below with reference to the embodiments in the accompanying drawings.

[0062] like Figures 1 to 14 As shown, the first embodiment of the flat handle of the utility model is without a lock. Figures 15 to 30 As shown, a second embodiment of the flat handle of the utility model is provided with a lock.

[0063] As Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 11 shown, the flat handle of this embodiment includes a handle housing 1, a handle 2, an elastic member 3 and a gear assembly 4. The front of the handle housing 1 is provided with a first accommodation cavity 1a; the handle 2 is placed inside the first accommodation cavity 1a, having a rotation positioning end 2a and a free end 2b. The rotation positioning end 2a is rotatably connected to both sides of the first accommodation cavity 1a, and several tooth structures 2c are provided at this end; the gear assembly 4 is arranged on the back of the handle housing 1, having a gear 4a, and the gear 4a meshes with the tooth structure 2c; the elastic member 3 is connected between the handle housing 1 and the handle 2 to force them to fit elastically; the hollow position on the back of the handle housing 1 is covered by a handle housing cover plate 10.

[0064] This flat handle accommodates the handle through the first accommodation cavity of the handle housing, realizing the hiding of the handle inside the handle housing and solving the defect that people accidentally bump into the handle; a rotating gear assembly is arranged on the back of the handle housing, so that this flat handle can be suitable for the installation and use of extremely narrow door leaf profiles. The gear assembly can be installed on the left or right side of the handle housing according to specific requirements, and can be translated and reversed by removing the mounting screws above, and can also be installed in the middle. The central position of the gear is connected to an external transmission rod to form a transmission chain, and the rotation of the gear drives the external transmission rod to move up and down, realizing the opening or closing of the door lock.

[0065] As Figure 5 , Figure 13 and Figure 14 shown, this flat handle further includes a handle rotating shaft 5 and two handle shaft sleeves 9. The handle rotating shaft 5 passes through the rotation positioning end 2a of the handle 2 and the first accommodation cavity 1a to rotatably connect the two. The handle shaft sleeves 9 are respectively sleeved into the side holes on both sides of the rotation positioning end 2a of the handle 2 and placed in the side holes on both sides of the first accommodation cavity 1a. One end of the handle rotating shaft 5 has a flange stuck on the handle housing 1, passes through the two handle shaft sleeves 9, and the other end is rotatably riveted on the handle housing 1.

[0066] The handle rotates around the handle rotating shaft as the axis, and its free end can swing back and forth within a certain angle. Pulling up and putting down the free end realizes two states of opening and closing.

[0067] As Figure 7 , Figure 13 and Figure 14As shown, the elastic member 3 is a torsion spring. A torsion spring installation groove 2d is provided in the middle of the rotation positioning end 2a of the pull handle 2. The torsion spring is located in the torsion spring installation groove 2d and passes through the handle rotating shaft 5. One end of the torsion spring is elastically pressed against the inner wall of the torsion spring installation groove 2d, and the other end is elastically pressed against the handle housing 1. Using a torsion spring as the elastic member is convenient for both use and installation. Moreover, the torsion spring is hidden and installed in the torsion spring installation groove, not exposed on the surface of the handle, with a beautiful appearance.

[0068] As Figure 3 , Figure 5 and Figure 14 shown, the gear 4a is provided with meshing teeth 4a1 on a partial circumference. Since the function of the gear only requires a small amplitude of back-and-forth rotation and does not require a full rotation, the gear can be designed as a partial gear structure with partial meshing teeth, which can save the processing cost of the gear and also save the installation space, making the external structure of the gear assembly more compact.

[0069] As Figure 5 and Figure 14 shown, two positioning posts 4e are provided on the gear assembly 4, and two positioning holes 1f are provided on the back of the handle housing 1. The gear assembly 4 is positioned in the positioning holes 1f of the handle housing 1 through the positioning posts 4e.

[0070] As Figure 13 and Figure 14 shown, the gear assembly 4 further includes a gear seat 4b and a gear seat cover plate 4c. Convex posts 4a2 are provided at both ends of the gear 4a and are rotatably connected between the gear seat 4b and the gear seat cover plate 4c. A square hole 4a3 is provided on the gear 4a to connect with the external square convex post 4a2 to form a transmission chain. The gear seat 4b and the gear seat cover plate 4c are respectively provided with holes to sleeve the convex posts 4a2 on both sides of the gear 4a and can rotate. The gear seat cover plate 4c is riveted and fixed on the gear seat 4b. Through holes are respectively provided on the gear seat and the gear seat cover plate to install the convex posts at both ends of the gear, with a simple structure and convenient installation.

[0071] As Figure 12 and 13 shown, an inverted buckle position 1e is provided at one end of the handle housing 1 and is snapped into the fixed edge of the profile. The setting of the inverted buckle position enables the handle housing to be stuck in the profile, and then the other end is provided with screw holes on the side, and the handle is completely fixed through screws, with simple, convenient and fast operation.

[0072] As Figure 10 and 13 shown, a soft rubber plug 8 that fits with the pull handle 2 is provided in the first accommodation cavity 1a. The setting of the soft rubber plug enables a buffering process when the pull handle rebounds under the action of elastic force, avoiding damage to the surfaces of the mutually contacting parts and also eliminating the sound of mutual collision.

[0073] As Figures 7 to 10As shown, the handle 2 of the flat handle is pulled up, and the flat handle is in the open state. After pulling the handle 2 in a certain direction, it automatically rebounds and sinks into the first accommodation cavity 1a of the handle housing 1 under the action of the torsion spring force. For aesthetic reasons, the outer surface of the handle 2 is flush with the outer surface of the handle housing 1. Of course, there can also be other forms, such as the outer surface of the handle 2 is slightly lower than the outer surface of the handle housing 1, but it is not recommended to protrude.

[0074] As Figures 15 to 30 shown, the difference between the flat handle of the second embodiment and the first embodiment is that this flat handle is provided with a lock. The specific differences are as follows: As Figure 15 , Figure 20 , and Figures 27 to 30 shown, this flat handle further includes an eccentric lock post 6 and a lock pin 7. A lock core hole 1c is provided on the front surface of the handle housing 1, and a second accommodation cavity 1b is provided on the back surface thereof; the eccentric lock post 6 and the lock pin 7 are built into the second accommodation cavity 1b, and one end of the eccentric lock post 6 passes through the lock core hole 1c; the rotation of the eccentric lock post 6 drives the lock pin 7 to move up and down, and one end of the lock pin 7 is engaged with or disengaged from the position between the two tooth structures 2c. This flat handle can be provided with a lock. The eccentric lock post is sleeved into the lock core hole on the front surface of the handle housing, and is rotated and controlled by setting the special-shaped hole on the front surface of the eccentric lock post and the corresponding special-shaped key; it can prevent children from accidentally operating and has the function of a child lock, and can also be used for anti-theft or meet other safety requirements.

[0075] As Figure 29 shown, the eccentric lock post 6 is provided with a guide post 6a deviating from the center line, and the lock pin 7 is provided with a long hole 7a. The guide post 6a is located in the long hole 7a. When the eccentric lock post 6 is rotated, its eccentric guide post 6a has a certain range of horizontal and vertical displacements. The long hole 7a of the lock pin 7 cooperates with the guide post 6a to meet the horizontal displacement, so the guide post 6a can drive the lock pin 7 to move up and down.

[0076] As Figure 22 and Figure 30 shown, the lock pin 7 is provided with a through hole 7b. At both ends of the through hole 7b, positioning steel balls 7c are respectively provided, and a positioning spring 7d is provided in the middle; on both sides of the second accommodation cavity 1b, two pairs of positioning grooves 1d facing each other are respectively provided, and the positioning steel balls 7c are located in the positioning grooves 1d. When the eccentric lock post 6 rotates to drive the lock pin 7 to move, the positioning steel balls 7c compress the positioning spring 7d. After the lock pin 7 moves in place, the positioning spring 7d expands and the positioning steel balls 7c are engaged in the positioning grooves 1d to achieve the positioning function.

[0077] The two pairs of positioning grooves are respectively in the open or closed state of the lock pin. The outer shape structure of the positioning groove is adapted to the positioning steel ball. During the up and down movement of the lock pin, the positioning steel ball is engaged in the positioning groove under the elastic force of the middle positioning spring to achieve the positioning of the lock pin.

[0078] AsFigure 31 and Figure 32 As shown in Figure 32 , the present utility model also discloses an automatic lock, which includes a planar handle of any of the above embodiments. A transmission mechanism 11 is connected to the axis position of the gear 4a, and the transmission mechanism 11 is connected to an automatic locking bolt 12. The transmission mechanism 11 includes a transmission box and a transmission rod. The square shaft of the transmission box is connected to the square hole at the axis position of the gear 4a. One end of the transmission rod is connected to the transmission box and the other end is connected to the automatic locking bolt 12.

[0079] As Figure 32 , Figure 33 and Figure 34 As shown in Figure 32 , Figure 33 , and Figure 34 , the automatic locking bolt 12 includes a fixed base 12a, a bolt locking tongue 12b, and a compression spring 12c. The fixed base 12a is fixed. One end of the bolt locking tongue 12b is provided with an inclined arc surface 12d for squeezing into position for locking. The bolt locking tongue 12b is provided with a receiving cavity 12e for receiving the fixed base 12a. A compression spring 12c is provided in the receiving cavity 12e and is pressed against the end face of the fixed base 12a. The bolt locking tongue 12b moves back and forth relative to the fixed base 12a and is limited in position. The bolt locking tongue 12b is connected to the transmission rod of the transmission mechanism 11.

[0080] The fixed base provided at the bottom of the bolt locking tongue of the automatic locking bolt is fixed in the profile groove by screws, and a compression spring is provided inside to connect it so that the bolt locking tongue can move up and down within a limited range of movement. The opening of the door or window fan is realized by driving the bolt locking tongue through the handle. The door or window fan is reset by the compression spring. When the door or window fan is closed, the bolt automatically locks the door or window.

[0081] As Figure 31 As shown in Figure 31 , the present utility model also discloses a door or window, which includes a door or window fan. The above automatic lock is installed on the door or window fan. The above automatic locking bolts are respectively arranged above and below the automatic lock. The inclined arc surfaces of the upper automatic locking bolt and the lower automatic locking bolt are symmetrically arranged. The opening of the door or window fan is realized by pulling up the handle of the planar handle to drive the transmission mechanism to drive the bolt locking tongue. After opening, the handle is put down. Under the action of the torsion spring force, the handle resets and is hidden in the first accommodating cavity of the handle housing. The transmission box and the transmission rod reset together; then the bolt locking tongue resets under the action of the compression spring force. At this time, the bolt locking tongue is in the extended state; when it is necessary to close the door or window, only need to push the door or window so that the inclined arc surface of the bolt locking tongue is pressed. Continuing to apply force, the inclined arc surface causes the bolt locking tongue to receive an inward force and move inward. The bolt locking tongue presses the compression spring and moves inward and finally snaps into the frame of the aluminum profile to be locked; during the process of closing the door or window, the planar handle and the transmission mechanism do not have any movement. When the door or window is closed, the automatic locking bolt automatically locks the door or window; the structure is simple and practical, reducing the complexity of manually operating the door or window lock, and easily and simply realizing the locking of the door or window.

[0082] The operation processes of opening and closing the flat handle are as follows for the above two embodiments:

[0083] 1. Pull the handle;

[0084] 2. The torsion spring is compressed;

[0085] 3. The gear teeth structure on the handle drives the gear to rotate;

[0086] 4. The gear drives the external transmission box to achieve transmission;

[0087] 5. The transmission box drives the transmission rod to act, the bolt is pulled down, and the door or window sash is opened;

[0088] 6. Release the handle, the compressed torsion spring expands, drives the handle to reset, and returns to the first accommodating cavity of the handle housing where the handle sinks;

[0089] 7. When the handle resets, the transmission box and the bolt also reset;

[0090] 8. When the door or window is closed, without operating the handle, directly push the profile or glass of the door or window, and the door or window is locked under the action of the spring compressed by the automatic locking bolt.

[0091] The flat handle, the automatic lock and the door or window accommodate the handle through the first accommodating cavity of the handle housing, realizing the hiding of the handle in the handle housing, and solving the defect that people accidentally bump into the handle; a rotating gear assembly is arranged on the back of the handle housing, so that the flat handle can be applied to the installation and use of extremely narrow door leaf profiles. The gear assembly can be installed on the left or right side of the handle housing according to specific requirements, and can be translated and reversed by removing the mounting screws above, and can also be installed in the middle; the gear is designed as a partial gear structure with partial meshing teeth, which can save the processing cost of the gear, save the installation space, and make the external shape structure of the gear assembly more compact.

[0092] The flat handle, the automatic lock and the door or window can be equipped with a lock. The eccentric lock post is sleeved into the lock core hole on the front of the handle housing, and is rotationally controlled by setting the special-shaped hole on the front of the eccentric lock post and the corresponding special-shaped key; it can prevent children from misoperating and has the function of a child lock, and can also be used for anti-theft or meet other safety requirements.

[0093] In summary, as described in the specification and illustrated content of the present utility model, an actual sample has been made and tested through multiple uses. From the test results, it is proven that the present utility model can achieve the expected purpose, and its practicability is beyond doubt. The above-mentioned embodiments are only used to conveniently illustrate the content of the present utility model and do not impose a formal limitation on it; any equivalent embodiments made by those with common general knowledge in the relevant technical field, without departing from the scope of the technical features and similar features proposed by the present utility model and using the technical content disclosed by the present utility model to make partial modifications or decorations, all fall within the protection scope of the present utility model.

Claims

1. A flat handle, characterized in that: The invention comprises a handle housing (1), a handle (2), an elastic member (3) and a gear assembly (4); the handle housing (1) is provided with a first accommodating cavity (1a) on the front side; the handle (2) is built into the first accommodating cavity (1a) and has a rotating positioning end (2a) and a free end (2b); the rotating positioning end (2a) is rotatably connected to the first accommodating cavity (1a) and is provided with a plurality of gear tooth structures (2c); the gear assembly (4) is provided on the back side of the handle housing (1) and has a gear (4a); the gear (4a) is meshed with the gear tooth structure (2c); the elastic member (3) is connected between the handle housing (1) and the handle (2) to force the two to fit elastically.

2. The flat handle according to claim 1, characterized in that: It also comprises a handle rotating shaft (5), wherein the handle rotating shaft (5) passes through the rotation positioning end (2a) of the pull handle (2) and the first accommodating cavity (1a) to rotationally connect the two.

3. The flat handle according to claim 2, characterized in that: The elastic member (3) is a torsion spring, and the rotation positioning end (2a) of the handle (2) is provided with a torsion spring installation groove (2d). The torsion spring is located in the torsion spring installation groove (2d) and passes through the handle shaft (5); one end of the torsion spring is elastically pressed against the inner wall of the torsion spring installation groove (2d), and the other end is elastically pressed against the handle housing (1).

4. The flat handle according to claim 1, characterized in that: The gear (4a) is provided with meshing teeth (4a1) on a part of its circumference.

5. The flat handle according to claim 1, characterized in that: The gear assembly (4) further comprises a gear seat (4b) and a gear seat cover plate (4c); two ends of the gear (4a) are respectively provided with protruding columns (4a2) which are rotatably connected between the gear seat (4b) and the gear seat cover plate (4c); the gear (4a) is provided with a square hole (4a3) which is connected to an external square protruding column (4a2) to form a transmission chain.

6. The flat handle according to claim 1, characterized in that: It also includes an eccentric lock column (6) and a lock pin (7); the front side of the handle housing (1) is provided with a lock core hole (1c), and the back side thereof is provided with a second accommodating cavity (1b); the eccentric lock column (6) and the lock pin (7) are built in the second accommodating cavity (1b), and one end of the eccentric lock column (6) passes through the lock core hole (1c); the rotation of the eccentric lock column (6) drives the lock pin (7) to move up and down, and one end of the lock pin (7) is stuck in or leaves the position between the two gear structures (2c).

7. The flat handle according to claim 6, characterized in that: The eccentric locking column (6) is provided with a guide column (6a) deviating from the center line, the locking pin (7) is provided with an elongated hole (7a), and the guide column (6a) is located in the elongated hole (7a).

8. The flat handle according to claim 6, characterized in that: The locking pin (7) is provided with a through hole (7b), and positioning steel balls (7c) are respectively provided at both ends of the through hole (7b), and a positioning spring (7d) is provided in the middle; two pairs of positioning grooves (1d) facing each other are respectively provided on both sides of the second accommodating cavity (1b), and the positioning steel balls (7c) are located in the positioning grooves (1d).

9. The flat handle according to claim 1, characterized in that: One end of the handle housing (1) is provided with an undercut snap-in position (1e) for snapping into a fixed edge of the profile.

10. The flat handle according to claim 1, characterized in that: A soft rubber plug (8) that fits the pull handle (2) is provided in the first accommodating cavity (1a).

11. An automatic lock, characterized in that: It comprises the flat handle according to any one of claims 1 to 10, wherein the axis position of the gear (4a) is connected to a transmission mechanism (11), and the transmission mechanism (11) is connected to an automatic locking pin (12).

12. The automatic lock according to claim 11, characterized in that: The automatic locking bolt (12) comprises a fixed base (12a), a bolt tongue (12b) and a compression spring (12c); the fixed base (12a) is fixed; one end of the bolt tongue (12b) is provided with an inclined arc surface (12d) or an inclined surface for squeezing into position and locking; the bolt tongue (12b) is provided with a receiving cavity (12e) for receiving the fixed base (12a); the compression spring (12c) is provided in the receiving cavity (12e) and is pressed against the end surface of the fixed base (12a); the bolt tongue (12b) moves back and forth relative to the fixed base (12a) and is provided with a limit position.

13. A door and window, comprising a door and window leaf, characterized in that: The automatic lock according to claim 11 or 12 is installed on the door and window sashes.

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