Hidden handle and transmission assembly

Abstract

The utility model discloses a hidden handle and a transmission assembly, and belongs to the technical field of door and window accessories. A receding groove is formed in the middle of one side of the handle. The shell is provided with a containing groove for containing and rotating the handle, and the middle of one side of the containing groove protrudes towards the bottom wall of the receding groove; the transmission strip is in sliding connection with the shell, and the transmission strip is in transmission connection with the handle; the pre-elastic piece provides elastic force for the transmission strip to push the handle; the release part is used for limiting the handle from popping out of the containing groove. The pre-bouncing piece pushes the handle to be bounced out in an indirect transmission mode, so that the side wall of the containing groove is simple and attractive. The space between the handle and the pre-elastic piece is reasonably and compactly distributed, the overall thickness of the handle can be small under the condition that the quality of the handle is high, the abdicating groove enables the outline of the handle to provide more space for fingers to stretch in on the side where the abdicating groove is located, more handle operation space can be provided in the narrow space, and the handle can be conveniently operated. And the method is particularly suitable for use scenes with limited operation spaces.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window accessories, in particular to a hidden handle and a transmission component. Background Art

[0002] Door and window handles protrude outside the doors and windows and can easily cause injuries to passers-by or damage to objects. Hidden handles that are flush with the installation surface not only have a certain degree of safety but also have a simple appearance and have become an emerging development trend.

[0003] The hidden handle requires a certain operation to make the handle embedded in the installation surface protrude before it can be operated. Generally, this is achieved by setting an elastic member to push the handle out. This structure will be exposed in the groove that accommodates the handle after the handle is popped out, which is easy to damage and unsightly. Utility Model Content

[0004] The purpose of the present utility model is to provide a concealed handle and transmission assembly to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] The technical solution adopted to solve the above technical problems is as follows: a hidden handle, comprising: a handle, a middle part of one side of which is provided with a clearance groove; a shell, a housing groove for accommodating the handle, the handle is rotatably connected to the shell, the middle part of one side of the housing groove protrudes toward the bottom wall of the clearance groove, so that a clearance space is formed on the outside of the shell; a transmission bar, slidably connected to the shell, the transmission bar is transmission-connected to the handle, so that when the handle rotates, the transmission bar can be driven to slide; a pre-elastic part, arranged in the clearance space, the pre-elastic part provides elastic force for the transmission bar to push the handle to pop out of the housing groove; a release part, installed on the shell, the release part is used to limit the handle from popping out of the housing groove, and the restriction on the handle can be released when the release part is operated.

[0006] This technical solution has at least the following beneficial effects: after the release member releases the restriction on the handle, the elastic force of the pre-elastic member can push the transmission bar to move, thereby driving the handle to rotate and causing the handle to pop out of the receiving slot, making it easier to use the handle. The pre-elastic member pushes the handle out through indirect transmission. The pre-elastic member does not directly operate the handle and is not located on the side wall of the receiving slot. The pre-elastic member is not exposed to the surface of the shell and is not easily damaged. At the same time, it also makes the side wall of the receiving slot more simple and beautiful. In addition, the space between the handle and the pre-elastic member is reasonably distributed and compact, which can reduce the overall thickness of the handle while ensuring high quality. The clearance groove in the middle of one side of the handle makes the handle contour provide more space for fingers to enter the side position where the clearance groove is located, which can provide more handle operation space in a narrow space, especially suitable for use scenarios with limited operating space.

[0007] As a further improvement to the above technical solution, the clearance space is provided with an open slot opening toward one side of the housing widthwise, the pre-elasticated member is mounted within the open slot, and the housing is provided with a pressure plate for covering the open slot, on which the transmission bar is slidably mounted. The rational lateral distribution of the transmission bar, pre-elasticated member, and handle significantly reduces the overall thickness, occupies less space, and can be adapted for installation on thinner profiles. This also facilitates the installation of the transmission bar and pre-elasticated member, improving assembly efficiency.

[0008] As a further improvement to the above technical solution, the pre-elastic member includes a slider slidably disposed within the open slot and a first elastic member disposed between the slider and the housing. A push post is disposed at one end of the slider, and a protrusion is formed on one side of the end of the transmission bar, which is located in the clearance space. The first elastic member provides elastic force for the push post to push the protrusion. The housing is provided with a stopper for limiting the position of the slider. The first elastic member provides thrust for the push post, thereby pushing the transmission bar to slide. The stopper limits the handle to only eject to a predetermined angle, so that after ejection, the handle remains in the state it was in before ejection. For example, if the door or window is still unlocked, the user must continue to rotate the handle before unlocking it. This prevents the door or window from being unlocked directly after the handle is ejected, which can easily lead to instability. Furthermore, the push post and the protrusion that drives the transmission bar are arranged side by side along the direction of movement of the transmission bar, fully utilizing the clearance space. The rational distribution design further reduces the overall size.

[0009] As a further improvement to the above technical solution, a tensile block is disposed within the receiving groove, and the handle defines a tensile groove for the tensile block to fit into and rotate. When the handle is rotated to its maximum angle, one side of the handle contacts the sidewall of the receiving groove, and three consecutive adjacent side faces of the tensile block contact the sidewall of the tensile groove. The tensile block limits the rotation angle of the handle, and when the handle is rotated to its maximum angle, the handle is further restricted in three directions by the tensile block, preventing shaking and improving its stability. Furthermore, the tensile block provides a support point for the handle outside of its rotational center, thereby enhancing its tensile strength.

[0010] As a further improvement to the above technical solution, the handle includes a mounting slot that accommodates a second elastic member and a positioning block. The mounting slot and the tensile groove are coextensive in width, and the sidewalls of the receiving slot are provided with auxiliary positioning slots. The second elastic member provides a spring force that partially engages the positioning block within the auxiliary positioning slot. When the positioning block engages within the auxiliary positioning slot, the handle is positioned in a predetermined position. When the handle is rotated to a predetermined position, such as when the handle's position corresponds to the position of the limit block limiting the slider or when the handle is at a predetermined rotation angle, the positioning block is positioned in a position corresponding to the auxiliary positioning slot. The elastic force of the second elastic member allows the positioning block to engage within the auxiliary positioning slot, ensuring the handle maintains stability in the predetermined position. Furthermore, the mounting slot and the tensile groove are coextensive in width, resulting in a compact structure and high space utilization.

[0011] As a further improvement to the above technical solution, the release member includes a button slidably disposed on the housing and a third elastic member disposed between the button and the housing. The handle is provided with a restriction groove, and a drive lock block is slidably disposed on the housing perpendicular to the sliding direction of the button. A fourth elastic member is disposed between the drive lock block and the housing, providing elastic force to engage the drive lock block in the restriction groove. The button and the drive lock block are both provided with matching inclined structures on the sides adjacent to each other. When the button is pressed, the elastic force of the third and fourth elastic members is overcome to push the drive lock block out of the restriction groove, releasing the restriction on the handle. Pressing the button releases the restriction on the handle, allowing the handle to be rotated out under the action of the pre-elastic member, making it easier to grasp and use the handle. This method of pressing the button eliminates the need for the housing surface to provide space for the button to move, thereby making the housing surface relatively simple. The drive lock block restrains the handle from one side, ensuring the stability of the handle restriction.

[0012] As a further improvement of the above technical solution, the drive lock block is provided with a groove for embedding and sliding the key, the inclined surface structure of the drive lock block is located at the inner wall of the groove, the drive lock block is provided with a limiting hole located at the bottom wall of the groove, the shell is provided with a spring column which can slide in the limiting hole, the third elastic member is a third spiral spring which is sleeved at one end of the spring column, and the other end of the third spiral spring is pressed against the shell. The position of the inclined surface structure and the installation position of the third elastic member are designed ingeniously, so that the overall space occupied by the drive lock block, the key and other components is small, the overall thickness of the handle is small, and the transmission process is stable.

[0013] As a further improvement of the above technical solution, the shell is provided with a pressing block, the drive lock block is slidingly arranged in the pressing block, the fourth elastic member is arranged between the drive lock block and the pressing block, and the spring column is arranged in the pressing block. The drive lock block and other components can be assembled with the pressing block first, and then the pressing block is mounted on the shell, so that the assembly of the release member is facilitated and the assembly efficiency is improved.

[0014] A transmission assembly comprises the hidden handle, and further comprises a transmission panel, the handle is provided with gear teeth, the transmission bar is provided with a gear tooth groove for embedding and engaging the gear teeth, a transmission block is protruded from the back side of the transmission bar at a position corresponding to the gear tooth groove, and the transmission panel is provided with a transmission groove for embedding the transmission block. The distribution design of the complementary concave-convex structures of the gear tooth groove structure and the transmission block can limit the profile space of the installation position.

[0015] As a further improvement of the above technical solution, the transmission assembly further comprises a transmission pull strip arranged at the end of the transmission panel, the hidden handle and the transmission pull strip are arranged at the same side of the transmission panel in a staggered manner, the protruding block is located at the end of the transmission bar away from the gear tooth groove, the protruding block is provided with a butt joint groove, and the transmission panel is provided with a butt joint block which can be embedded in the butt joint groove.

[0016] The protruding block and the gear tooth groove are respectively located at the two ends of the transmission bar, and the pre-elastic member is located between the protruding block and the gear size, so that the gear tooth groove structure, the pre-elastic member and the protruding block are distributed in parallel in the longitudinal direction, the position of the space for giving way is fully utilized, and the structure is compact. The butt joint groove for embedding the butt joint block of the transmission panel can be further formed in the protruding block, the transmission connection between the transmission panel and the transmission bar is stable and reliable through the double cooperation between the transmission block and the transmission groove and between the butt joint block and the butt joint groove, the distribution design of the complementary concave-convex structures of the protruding block and the butt joint groove can fully utilize the position of the space for giving way, and the overall thickness of the hidden handle is further reduced. In addition, the transmission pull strip and the hidden handle are located at the same side and are distributed in a staggered manner, the space between the profile and the transmission panel can be fully utilized, and the thickness of the profile which can be adapted for use is smaller. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the front installation of an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the rear installation of an embodiment of the utility model;

[0021] Figure 4 This is a structural diagram of the hidden handle and transmission panel in an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the exploded structure of the embodiment of the utility model from the front view;

[0023] Figure 6 Schematic diagram of partial cross-section at two different viewing angles of the embodiment of the present utility model;

[0024] Figure 7 This is a partial cross-sectional schematic diagram of the handle in the embodiment of the present utility model when it is pre-popped out;

[0025] Figure 8 This is a partial cross-sectional view of the handle in the embodiment of the present utility model when it is fully pulled out;

[0026] Figure 9 This is a schematic diagram of the positions of two auxiliary positioning grooves in the housing in an embodiment of the utility model;

[0027] Figure 10 This is a schematic diagram of the installation structure of the tensile block and the tensile groove in the embodiment of the utility model;

[0028] Figure 11 This is a schematic diagram of the exploded structure of the embodiment of the utility model from a rear view;

[0029] Figure 12 This is a schematic structural diagram of the handle and the release member in an embodiment of the present utility model;

[0030] Figure 13 It is a cross-sectional schematic diagram of the installation structure between the button and the drive lock block in an embodiment of the present utility model.

[0031] 100, handle; 110, limiting groove; 120, giving way groove; 200, housing; 210, receiving groove; 220, rotating shaft; 230, pressing plate; 240, pressing block; 300, transmission bar; 301, protrusion; 310, rack tooth groove; 320, gear teeth; 330, docking groove; 340, transmission block; 400, slider; 410, first elastic member; 420, push column; 430, spring shaft; 440, limiting block;

[0032] 500, first positioning structure; 510, second elastic member; 520, positioning block; 530, auxiliary positioning groove; 540, mounting groove; 600, tensile block; 610, tensile groove; 700, button; 710, third elastic member; 720, limiting member; 730, drive lock block; 740, fourth elastic member; 750, inclined structure; 800, groove; 810, limiting hole; 820, spring column; 900, transmission panel; 910, docking block; 920, transmission groove; 930, transmission pull strip. DETAILED DESCRIPTION

[0033] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0035] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Reference Figure 1-5The concealed handle includes a handle 100 and a housing 200. The housing 200 has a receiving slot 210 on the front side. A rotating shaft 220 is provided at the top of the receiving slot 210. The rotating shaft 220 passes through the top of the handle 100, allowing the handle 100 to rotate relative to the housing 200. The shape of the handle 100 is adapted to the interior space of the receiving slot 210. When the handle 100 is inserted into the receiving slot 210, there is no gap or a small gap between the side walls of the handle 100 and the side walls of the receiving slot 210, and the front side of the handle 100 is flush with the front side of the housing 200.

[0038] Reference Figure 1-8 A transmission bar 300 is mounted on one side of the housing 200, sliding vertically. Two rack tooth grooves 310 are vertically aligned on the top of the transmission bar 300, giving the cross-section through the two rack tooth grooves 310 a rack profile. Three circumferentially distributed gear teeth 320 are formed on the top rear side of the handle 100. These gear teeth 320 fit into the rack tooth grooves 310, allowing the rotation of the handle 100 to drive the transmission bar 300 to slide vertically within the housing 200, achieving a rack-and-pinion transmission connection between the rotation of the handle 100 and the translation of the transmission bar 300.

[0039] None of the four side surfaces of the rack tooth groove 310 penetrates the sidewalls of the transmission bar 300, allowing two opposing side surfaces of the rack tooth groove 310 to limit the axial position of the gear teeth 320 on the rotating shaft 220, thereby improving the stability of the transmission between the transmission bar 300 and the handle 100. The number of rack tooth grooves 310 and gear teeth 320 can be set and adjusted based on the preset rotation angle of the handle 100, the preset translation range of the transmission bar 300, and the preset transmission ratio between the handle 100 and the transmission bar 300. In other embodiments, the transmission connection between the rotation of the handle 100 and the translation of the transmission bar 300 can also be achieved through a connecting rod. Specifically, a connecting rod is rotatably mounted in the middle of the rear side of the handle 100, and the end of the connecting rod away from the handle 100 is rotatably mounted on the transmission bar 300. When the handle 100 is rotated, the connecting rod pulls the transmission bar 300 to move, achieving the transmission connection.

[0040] A pre-elastic element is installed between the housing 200 and the transmission bar 300. The pre-elastic element provides elastic force to the transmission bar 300, causing it to move and drive the handle 100 to rotate, thereby causing the bottom of the handle 100 to pop out of the receiving slot 210. The housing 200 is also equipped with a release element. The release element can restrain the handle 100, preventing it from popping out of the receiving slot 210 due to the elastic force of the pre-elastic element. After the release element is operated, such as by pushing or pressing, the release element releases the restraint on the handle 100, and the handle 100 pops out of the receiving slot 210 due to the elastic force provided by the pre-elastic element, making it easier to grasp and use the handle 100. When the handle 100 is not in use, the bottom of the handle 100 is pressed into the receiving slot 210, and the release element automatically restrains the handle 100, thereby storing and concealing the handle 100.

[0041] Specifically, the pre-elastic component includes a slider 400 and a first elastic member 410. The slider 400 is slidably mounted on the left side of the housing 200 in the vertical direction. A push post 420 is integrally formed at the bottom of the slider 400, and a spring shaft 430 is integrally formed at the top of the slider 400. The axis of the spring shaft 430 coincides with the axis of the push post 420. The first elastic member 410 is a first coil spring, which is sleeved within the spring shaft 430. One end of the first coil spring presses against the housing 200, while the other end contacts the slider 400. The bottom of the transmission bar 300 protrudes forward to form a bump 301. When the release member contacts the restriction on the handle 100, the elastic force of the first coil spring can push the slider 400 downward, and drive the push post 420 downward until it presses against the top of the protrusion 301, thereby pushing the transmission bar 300 downward, and further driving the handle 100 to rotate, causing the bottom of the handle 100 to pop out of the receiving slot 210, making it easier for the user to grasp and use the handle 100. In another embodiment, the first elastic member 410 can also be a curved elastic sheet, with one end of the curved elastic sheet fixed to the housing 200 and the other end pressing against the end of the slider 400 away from the push post 420. The elastic force generated by the curved deformation of the curved elastic sheet provides the downward force for the slider 400.

[0042] The housing 200 is integrally formed with a limit block 440. The limit block 440 is located below the slider 400, and a slot is provided in the middle of the limit block 440 for the push column 420 to pass through. When the first elastic member 410 pushes the slider 400, the first elastic member 410 can only push the slider 400 to a position where it presses against the limit block 440 and then stops. At this time, the transmission bar 300 moves a preset distance, and the handle 100 also rotates a preset angle under the action of the transmission bar 300. That is, after the handle 100 is ejected, it stays in the first preset position. The first preset position is a position where the handle 100 is convenient for grasping while the angle of rotation is small. For example, when the concealed handle is installed on a door or window, when the handle 100 is in the first preset position, it is convenient for grasping the handle 100 while the door or window is not unlocked. The door or window is unlocked only after the user continues to pull the handle 100, preventing the door or window from being unlocked directly after the handle 100 is ejected, causing instability.

[0043] Due to the restriction of the slider 400 by the limit block 440, the first elastic member 410 will not release all of its elastic force. When the slider 400 is about to hit the limit block 440, the push force of the push column 420 on the transmission bar 300 is still relatively large, which can ensure that the handle 100 can smoothly and stably reach the preset swing angle.

[0044] In another embodiment, the pre-elastic component can also be a single coil spring or an arc-shaped elastic sheet. One end of the coil spring is fixed to the shell 200, and the other end can use its own elastic force to directly press the transmission bar 300. One end of the arc-shaped elastic sheet is fixed to the shell 200, and the other end can use the elastic force generated by its own deformation to directly press the transmission bar 300.

[0045] The left side of the housing 200 has an open slot. The slider 400, push post 420, spring shaft 430, and first elastic member 410 are all inserted into the slot from the left side. The transmission bar 300 is then installed. A pressure plate 230 is mounted on the left side of the housing 200 via bolts or rivets. The pressure plate 230 has an elongated hole. A slide bar protrudes from the left side of the transmission bar 300 and is embedded in the elongated hole. When the transmission bar 300 slides up and down relative to the slider 400, the slide bar slides within the elongated hole, limiting the sliding movement and sliding range of the transmission bar 300 while also improving its sliding stability. The provision of the pressure plate 230 also facilitates assembly of the internal structure, improving assembly efficiency.

[0046] The middle part of the left side wall of the receiving groove 210 is protruded toward the right side, so that the internal space of the receiving groove 210 is wide at both ends and narrow in the middle, presenting a C-shape. A clearance groove 120 is provided in the middle part of the left side of the handle 100. The front and rear sides of the clearance groove 120 pass through the handle 100, and the protruding part on the left side of the receiving groove 210 is adapted to the clearance groove 120, so that the handle 100 can be adaptively embedded in the receiving groove 210. The above design allows the outer left side of the shell 200 to have a clearance space, and the pre-elastic part and the protrusion 301 are both placed in the clearance space. It can be understood that the open groove structure is provided in the clearance space, and the slider 400, the first elastic part 410, the push column 420, the spring shaft 430 and the limit block 440 and the transmission bar 300 are all provided in the clearance space. The overall structural design is compact.

[0047] For example, referring to Figure 2 The handle can also be used in a narrow space with an obstruction such as a wall or profile on one side, such as the left side. The clearance groove 120 on one side of the handle 100 is located to the left of the obstruction. When reaching out to grasp the handle 100, the space in the clearance groove 120 allows the fingers more room to extend between the handle 100 and the obstruction, making it easier to grasp and use the handle 100. Similarly, the handle is also suitable for use in a narrow space with an obstruction such as a wall or profile on the right side. The clearance groove 120 on the side of the handle 100 is located to the right of the obstruction. Therefore, the handle can provide more operating space for the handle 100 in a narrow space, making it particularly suitable for use in scenarios with limited operating space.

[0048] Reference Figure 5-10 A first positioning structure 500 is provided between the handle 100 and the housing 200. The first positioning structure 500 can assist in maintaining stability when the handle 100 is in a preset position relative to the housing 200. The first positioning structure 500 includes an auxiliary positioning groove 530, a positioning block 520, and a second elastic member 510. A mounting groove 540 is provided on the outer periphery of the handle 100 near the rotating shaft 220. The second elastic member 510 is a second coil spring embedded in the mounting groove 540. The positioning block 520 is a marble located at the end of the second coil spring away from the bottom wall of the mounting groove 540. The elastic force of the second coil spring presses the marble against the side wall of the receiving groove 210 of the housing 200.

[0049] Two auxiliary positioning slots 530 are defined on the sidewalls of the receiving slot 210. The first auxiliary positioning slot 530 corresponds to the position of the handle 100 when the transmission bar 300 is about to disengage the push post 420. It is understood that when the handle 100 is released from its restraint, the first coil spring pushes the slider 400 to move, causing the push post 420 to push the transmission bar 300 to a predetermined distance. However, due to the restraint of the stop block 440, the push post 420 cannot continue to push the transmission bar 300. At this point, the handle 100 rotates to a predetermined angle, and the positioning block 520 aligns with the position of the first auxiliary positioning slot 530. Under the elastic force of the second coil spring, the marble is partially inserted into the first auxiliary positioning slot 530, allowing the handle 100 to remain stably positioned at the pivoted position where it has just been ejected. This prevents inertia from destabilizing the predetermined opening angle of the handle 100.

[0050] The second auxiliary positioning groove 530 corresponds to the preset rotation angle of the handle 100 after it is pulled out. For example, after the handle 100 is rotated to 90 degrees, one side of the handle 100 just contacts the top inner wall of the receiving groove 210, reaching the limit of the movable range of the handle 100. It can be understood that when the handle 100 is pulled 90 degrees, the positioning block 520 is exactly aligned with the position of the second auxiliary positioning groove 530. Under the elastic force of the second coil spring, the marble is pushed to partially embed in the second auxiliary positioning groove 530, so that the handle 100 can be stably maintained in the position after being rotated 90 degrees, and the handle 100 can be prevented from falling due to gravity in this position.

[0051] In another embodiment, the inner sidewall of the receiving groove 210 may be provided with only the first auxiliary positioning groove 530 or only the second auxiliary positioning groove 530 according to actual needs. In another embodiment, a mounting groove 540 may be provided on the sidewall of the receiving groove 210 to allow the second elastic member 510 and the positioning block 520 to be assembled on the housing 200, while the auxiliary positioning groove 530 is provided on the outer periphery of the handle 100 near the rotating shaft 220.

[0052] In this embodiment, a tensile block 600 is protruding from the accommodating groove 210 of the shell 200 near the rotating shaft 220, and an arc-shaped tensile groove 610 is opened on the outer periphery of one end of the handle 100 near the rotating shaft 220. The tensile groove 610 and the mounting groove 540 are at the same width position, that is, the position in the left and right direction, and the tensile groove 610 and the gear teeth 320 are distributed side by side in the width direction. When the handle 100 is fully inserted into the receiving groove 210 or fully extended from the receiving groove 210, that is, when the front side of the handle 100 is flush with the front side of the receiving groove 210 and the front side of the handle contacts the top inner sidewall of the receiving groove 210, the two sides of the tensile block 600 contact the sidewalls of the tensile groove 610 at both ends, thereby further limiting the rotation range of the handle 100. That is, the handle 100 is restricted at both ends of the rotation range by the sidewalls of the receiving groove 210 and the tensile block 600, which can improve the stability of the handle 100 at both ends of the rotation range. It should be noted that through a reasonable layout structure, the installation groove 540 and the tensile groove 610 can be located in the same normal position perpendicular to the axis of the rotating shaft 220, making the structure compact and small.

[0053] Furthermore, the opening width of the tensile groove 610 gradually decreases from one end to the other. When the handle 100 is within the receiving groove 210, the tensile block 600 is located at the end of the tensile groove 610 with the wider opening, ensuring that the sidewalls of the tensile groove 610 do not interfere with the extension of the handle 100. When the handle 100 is rotated 90 degrees, i.e., fully extended from the receiving groove 210 to its maximum angle, the tensile block 600 is located at the end of the tensile groove 610 with the smaller opening width. This allows the three adjacent side surfaces of the tensile block 600, i.e., the end surface and two side surfaces, to contact the tensile block 600. This secures the handle 100 and prevents it from shaking. Furthermore, the tensile block 600 provides a support point for the handle 100, thereby enhancing its tensile strength.

[0054] In another embodiment, the positions at which the two sides of the tensile block 600 respectively contact the sidewalls of the tensile groove 610 correspond to respective rotation angles of the handle 100, such as 0 degrees and 90 degrees. When the rotation angle of the handle 100 is 0 degrees, the front side of the handle 100 may be slightly behind the front side of the housing 200. When the rotation angle of the handle 100 is 90 degrees, there is still a gap between the front side of the handle 100 and the inner sidewall of the top of the receiving groove 210. The preset rotation angles of the handle 100 corresponding to the positions at which the two sides of the tensile block 600 respectively contact the sidewalls of the tensile groove 610 can be set according to actual needs.

[0055] Reference Figure 6-13Specifically, the release member includes a button 700, a third elastic member 710, and a limiting member 720. A through hole is provided on the front side of the bottom of the housing 200 and extends through the rear side. The button 700 is slidably arranged at the front end of the through hole. The third elastic member 710 is arranged between the button 700 and the housing 200. The third elastic member 710 can provide an elastic force to push the button 700 forward. The side wall of the through hole is provided with a stepped structure, so that the button 700 contacts the stepped structure under the elastic force of the third elastic member 710. At this time, the front side of the button 700 is flush with the front side of the housing 200.

[0056] The limiting member 720 includes a drive lock block 730 and a fourth elastic member 740. The drive lock block 730 is disposed on the bottom rear side of the housing 200 for vertical sliding movement. The drive lock block 730 is positioned behind the button 700. It is understood that the sliding direction of the drive lock block 730 relative to the housing 200 is perpendicular to the sliding direction of the button 700 relative to the housing 200. A groove 800 is defined on the front side of the drive lock block 730. The rear portion of the button 700 is embedded in the groove 800. The vertical length of the groove 800 is greater than the vertical length of the portion of the button 700 embedded in the groove 800, thereby enabling the drive lock block 730 to slide vertically relative to the button 700. Inclined surfaces 750 are provided on the sidewalls of the groove 800 and on one side of the portion of the button 700 embedded in the groove 800. The inclined surface 750 on the drive lock block 730 is arranged to abut against the inclined surface 750 of the button 700. A wedge-shaped protrusion is formed on the top of the drive lock block 730. A limiting groove 110 is defined on the bottom surface of the handle 100. A fourth elastic member 740 is disposed between the drive lock block 730 and the housing 200. The fourth elastic member 740 provides the elastic force that pushes the drive lock block 730 until the wedge-shaped block is embedded in the limiting groove 110, thereby preventing the handle 100 from being rotated out of the receiving groove 210. The front side of the wedge-shaped block is an inclined surface. When the handle 100 is rotated back into the receiving groove 210, the bottom of the handle 100 contacts the inclined surface of the wedge-shaped block, causing the drive lock block 730 to overcome the elastic force of the fourth elastic member 740 and move, re-embedding the wedge-shaped block in the limiting groove 110 and preventing the handle 100 from popping out.

[0057] When the button 700 is pressed against the elastic force of the third elastic member 710, the button 700, through the inclined surface structure 750, pushes the drive lock block 730 to overcome the elastic force of the fourth elastic member 740, thereby extending the wedge block out of the limiting groove 110. This allows the handle 100 to partially pop out of the receiving groove 210 under the action of the pre-elastic member, making it easier to grasp and use the handle 100. Furthermore, the embedded transmission structure between the drive lock block 730 and the button 700 not only ensures transmission stability but also allows the handle to be as thin at the bottom as at the location where the pre-elastic member is installed, making it suitable for thinner profiles and expanding the range of profiles that can be used.

[0058] Because the bottom of the clearance groove 120 does not extend through the bottom surface of the handle 100, the bottom of the handle 100 is wider than the middle. This wider bottom of the handle 100 not only provides ample space for the restriction groove 110 but also facilitates gripping the handle 100, preventing the hand from slipping. Furthermore, the unique contour adds an aesthetic appeal to the handle 100. In other embodiments, the bottom wall of the clearance groove 120 can also extend through the bottom surface of the handle 100, further increasing the clearance space.

[0059] In another embodiment, the button 700 can be a push-pull button, and the limiting member 720 is an insert block installed at the bottom of the button 700, and the insert block is partially embedded in the limiting groove 110. By pushing the button 700 downward, the insert block is synchronously moved downward and disengaged from the limiting groove 110, thereby releasing the restriction on the handle 100.

[0060] A limit hole 810 is formed through the inner bottom wall of the recess 800 of the drive lock block 730. A pressure block 240 is mounted to the rear side of the bottom of the housing 200 via bolts or rivets, and the drive lock block 730 is slidably mounted on the pressure block 240. A spring column 820 is integrally formed on the side of the pressure block 240 facing the housing 200. The spring column 820 is inserted into the limit hole 810 and can slide relative to the limit hole 810 when the drive lock block 730 slides relative to the housing 200. The third elastic member 710 is a third coil spring. The sidewall of the spring column 820 is provided with a stepped structure. One end of the third coil spring is sleeved over the end of the spring column 820 away from the pressure block 240 and abuts against the stepped structure. A circular groove is formed on the side of the button 700 near the drive lock block 730. The other end of the third coil spring extends through the circular groove and is mounted on the inner bottom wall of the circular groove.

[0061] The pressure block 240 has a Z-shaped cross-section. The fourth elastic member 740 is a fourth coil spring, one end of which is mounted on the side wall of the drive lock block 730 and the other end is mounted in the pressure block 240. During installation, the button 700, the third coil spring, the drive lock block 730, the fourth coil spring, and the pressure block 240 are first assembled together, and then the pressure block 240 is installed on the rear side of the bottom of the housing 200. This improves assembly efficiency and also has the advantages of a compact structure and high space utilization.

[0062] In another embodiment, the release member may be a cover plate that slides vertically on the front side of the housing 200. When the cover plate moves downward, it pushes the handle 100 into the receiving groove 210 and prevents the handle 100 from extending out of the receiving groove 210. When the handle 100 is to be used, the cover plate is pushed upward, and the handle 100 extends out of the receiving groove 210 under the elastic force of the pre-elastic member, making it easier to grasp the handle 100 for use.

[0063] Reference Figure 2-5This embodiment also discloses a transmission assembly comprising the aforementioned concealed handle, a transmission panel 900, and two transmission bars 930. The two transmission bars 930 are stacked and mounted on the rear sides of the two ends of the transmission panel 900. The profile of the door or window is provided with a slide groove to allow the two transmission bars 930 to slide up and down, allowing the transmission panel 900 to slide up and down relative to the profile.

[0064] A docking groove 330 is defined on the rear side of the projection 301, while a docking block 910 is positioned in the middle of the front of the transmission panel 900. When the concealed handle is mounted on the profile and assembled with the transmission panel 900, the docking block 910 fits into the docking groove 330, positioning the concealed handle between two transmission bars 930. Pulling the handle 100 to move the transmission bar 300 drives the transmission panel 900 and transmission bar 930 to slide within the profile, thereby operating locks and other components. The complementary concave and convex arrangement of the projection and the docking groove fully utilizes the space available for clearance, further reducing the overall thickness of the concealed handle. Furthermore, the docking block is shorter than the docking groove 330, allowing the transmission bar 300 to move relative to the transmission panel 900 when the handle 100 is pre-extended. When the handle 100 is at the pre-extended angle, the transmission bar 300 does not cause the transmission panel 900 and transmission bar 930 to move, potentially actuating the lock.

[0065] The hidden handle and the transmission strip 930 are both located in the front side of the transmission panel 900, so that the space between the transmission panel 900 and the profile can be fully utilized. The thickness of the profile is affected by the installation position of the transmission strip 930, so that the thickness of the profile can be set smaller.

[0066] A transmission block 340 is formed on the rear side of the top of the transmission bar 300. The protruding setting of the transmission block 340 can provide more space for the recessed structure of the rack tooth groove 310, making the overall thickness of the hidden handle smaller. A transmission groove 920 is provided at the top of the transmission panel 900. When the hidden handle is installed on the profile and assembled with the transmission panel 900, the transmission block 340 is embedded in the transmission groove 920. Similarly, the length of the transmission block 340 is shorter than the length of the transmission groove 920, which facilitates the pre-extraction process of the handle 100. Through the dual cooperation between the transmission block 340 and the transmission groove 920, and between the docking block 910 and the docking groove 330, the transmission connection between the transmission panel 900 and the transmission bar 300 is stable and reliable.

[0067] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A hidden handle, characterized in that: include: The handle has a recess in the middle of one side; The housing is provided with a receiving groove for receiving the handle, the handle is rotatably connected to the housing, and the middle portion of one side of the receiving groove protrudes toward the bottom wall of the clearance groove, so that a clearance space is formed on the outer side of the housing; A transmission bar is slidably connected to the housing, and the transmission bar is in transmission connection with the handle, so that when the handle rotates, the transmission bar can be driven to slide; a pre-elastic member, disposed in the clearance space, the pre-elastic member providing elastic force for the transmission bar to push the handle out of the receiving slot; A release member is mounted on the housing and is used to restrict the handle from popping out of the receiving slot. When the release member is operated, the restriction on the handle can be released.

2. The hidden handle according to claim 1, characterized in that: The clearance space is provided with an opening groove opening toward one side of the shell width direction, the pre-elastic component is installed in the opening groove, the shell is provided with a pressure plate for covering the opening groove, and the transmission bar is slidably arranged on the pressure plate.

3. The hidden handle according to claim 2, characterized in that: The pre-elastic component includes a slider slidingly arranged in the open groove and a first elastic component arranged between the slider and the shell. A push column is provided at one end of the slider, and a protrusion is formed on one side of the end of the transmission bar to be located in the clearance space. The first elastic component provides elastic force for the push column to push the protrusion; the shell is provided with a limit block for limiting the position of the slider.

4. The hidden handle according to claim 1, characterized in that: A tensile block is provided on the inner side of the accommodating groove, and the handle is provided with a tensile groove for the tensile block to be embedded and rotated. When the handle is rotated to the maximum angle position, one side of the handle contacts the side wall of the accommodating groove, and the three consecutive adjacent side surfaces of the tensile block all contact the side wall of the tensile groove.

5. The hidden handle according to claim 4, characterized in that: The handle is provided with an installation groove, which accommodates a second elastic member and a positioning block. The installation groove and the anti-tension groove are at the same width position, and the side wall of the accommodating groove is provided with an auxiliary positioning groove. The second elastic member provides elastic force to partially embed the positioning block into the auxiliary positioning groove. When the positioning block is embedded in the auxiliary positioning groove, the handle is in a preset position.

6. The hidden handle according to claim 1, characterized in that: The release member includes a button slidably arranged on the shell and a third elastic member arranged between the button and the shell, the handle is provided with a limiting groove, the shell is provided with a driving lock block sliding along a direction perpendicular to the sliding direction of the button, and a fourth elastic member is provided between the driving lock block and the shell, the fourth elastic member provides elastic force to embed the driving lock block into the limiting groove, and the button and the driving lock block are both provided with a matching inclined structure on the side close to each other. When the button is pressed, the elastic force of the third elastic member and the fourth elastic member can be overcome to push the driving lock block out of the limiting groove, thereby releasing the restriction on the handle.

7. The hidden handle according to claim 6, characterized in that: The driving lock block is provided with a groove for the button to be embedded and slide, the inclined surface structure of the driving lock block is located on the inner side wall of the groove, the driving lock block is provided with a limiting hole located on the bottom wall of the groove, the shell is installed with a spring column that can slide in the limiting hole, the third elastic member is a third coil spring with one end sleeved on the spring column, and the other end of the third coil spring is pressed against the shell.

8. The hidden handle according to claim 7, characterized in that: The housing is provided with a pressing block, the driving locking block is slidably arranged on the pressing block, the fourth elastic member is installed between the driving locking block and the pressing block, and the spring column is installed on the pressing block.

9. A transmission assembly, characterized in that: It includes a hidden handle as described in claim 3, and also includes a transmission panel, the handle is provided with gear teeth, the transmission bar is provided with gear tooth grooves for the gear teeth to be embedded and engaged, the back side of the transmission bar and the gear tooth groove corresponding positions are protruded to form a transmission block, and the transmission panel is provided with a transmission groove for the transmission block to be embedded.

10. The transmission assembly according to claim 9, characterized in that: It also includes a transmission pull strip installed at the end of the transmission panel, the hidden handle and the transmission pull strip are staggered and installed on the same side of the transmission panel, the protrusion is located at the end of the transmission bar away from the gear tooth groove, the protrusion is provided with a docking groove, and the transmission panel is provided with a docking block that can be embedded in the docking groove.

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