Transmission device of door and window and door and window structure

Abstract

The utility model discloses a door and window transmission device and a door and window structure. The transmission device comprises a shell which is provided with a containing cavity, and the outer side of the shell is provided with an opening part communicated with the containing cavity; the gear and rack mechanism comprises a gear and a rack, the gear is contained in the containing cavity, and a mounting hole corresponding to the opening part is formed in the outer side of the gear and used for mounting the handle; the rack is arranged on the shell and is meshed with the gear; a limiting sliding block is formed on the inner wall of the containing cavity, and a limiting sliding groove is formed in the rack in the length direction. The limiting sliding block is in sliding fit with the limiting sliding groove so as to conduct movement limiting on the rack in the length direction of the rack. And the cover plate covers the rack and is connected with the shell through a connecting piece, so that the cover plate and the shell are relatively fixed, and the cover plate and the rack can move relatively. According to the transmission device, through sliding fit of the limiting sliding block and the limiting sliding groove, movement limiting is conducted on the rack in the length direction of the rack, and therefore the opening and closing safety of the door and window is improved.

Description

Technical Field

[0001] The utility model relates to the field of door and window equipment, in particular to a transmission device for doors and windows and a door and window structure. Background Art

[0002] Aluminum alloy doors and windows have the advantages of beauty, sealing, high strength, etc., and are widely used in home decoration. The existing aluminum alloy doors and windows have no effective limiting measures during the opening and closing process, and there is a risk of damage to the doors and windows due to excessive opening and closing force. Therefore, how to avoid excessive impact force during the closing of the doors and windows and damage the doors and windows has become an important problem. Based on this, it is urgent to design a transmission device that can effectively limit the doors and windows. Summary of the Utility Model

[0003] The utility model provides a transmission device for doors and windows and a door and window structure to improve the safety of opening and closing the doors and windows.

[0004] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0005] In the first aspect of the technical solution of the utility model, a transmission device for doors and windows is provided, including:

[0006] A housing, the housing has a receiving cavity, and an opening is provided on the outer side of the housing and is communicated with the receiving cavity;

[0007] A gear-rack mechanism, including a gear and a rack; wherein, the gear is accommodated in the receiving cavity, and an installation hole corresponding to the opening is provided on the outer side of the gear for installing a handle; the rack is arranged on the housing and meshes with the gear;

[0008] A limiting slider is formed on the inner wall of the receiving cavity, and a limiting sliding groove is provided along the length direction of the rack; the limiting slider is in sliding fit with the limiting sliding groove to limit the movement of the rack in the length direction of the rack;

[0009] A cover plate is covered on the rack and is connected to the housing through a connecting piece, so that the cover plate is relatively fixed to the housing, and the cover plate and the rack can move relatively.

[0010] Preferably, positioning grooves are formed at multiple preset positions of the limiting sliding groove, and an elastic member matching the positioning grooves is provided on the side wall of the limiting slider;

[0011] The limiting slider can slide in the sliding groove along the length direction of the rack, so that the elastic member is engaged with the positioning grooves at different preset positions.

[0012] Preferably, the plurality of preset positions at least include a starting position, an intermediate position and an ending position;

[0013] Among them, the starting position corresponds to the locked position of the door and window, the middle position corresponds to the horizontally opened position of the door and window, and the end position corresponds to the upper hanging position of the door and window.

[0014] Preferably, the elastic member comprises:

[0015] A compression spring is located between the side wall of the limiting slider and the inner wall of the limiting sliding groove, and the first end of the compression spring is fixed to the side wall of the limiting slider, and the compression spring is always in a compressed state;

[0016] A steel ball is fixed to the second end of the compression spring so as to press against the inner wall of the limiting sliding groove under the elastic force of the compression spring;

[0017] Wherein, the positioning groove is an arc groove and matches the size of the steel ball.

[0018] Preferably, the rack has an arc-shaped meshing portion with a preset curve, and the gear is an eccentric gear with a preset eccentricity, and the eccentric gear matches the arc-shaped meshing portion to drive the rack to move at a variable speed along the length direction.

[0019] Preferably, both ends of the inner bottom wall of the accommodating cavity are formed with limiting bosses, and the limiting bosses can abut against the teeth of the eccentric gear at a preset position to limit the rotation of the eccentric gear;

[0020] Wherein, the preset positions at least include the locked position and the upper hanging position of the doors and windows, wherein one of the limit bosses corresponds to the locked position of the doors and windows, and the other limit boss corresponds to the upper hanging position of the doors and windows.

[0021] Preferably, a limiting step is formed on the inner wall of the accommodating cavity, and the rack is supported on the limiting step to limit the relative movement of the rack and the housing in the width direction; wherein the width direction is the width direction of the rack.

[0022] Preferably, a strip groove is provided on the rack along the length direction, a through hole is provided on the cover plate, the connecting member passes through the through hole and the strip groove in sequence and is fixedly connected to the outer shell, and the connecting member can reciprocate in the strip groove, so that the cover plate and the outer shell are relatively fixed, and the cover plate and the rack can move relatively.

[0023] Preferably, the housing comprises:

[0024] A metal inner shell, wherein the accommodating cavity is formed on the metal inner shell, and the opening is opened on the outer wall of the metal inner shell;

[0025] A plastic outer shell is sleeved outside the metal inner shell, and an L-shaped connecting groove is formed on the outer side of the plastic outer shell, and a limiting clamping groove is opened at a position on the outer wall of the metal inner shell corresponding to the L-shaped connecting groove;

[0026] An L-shaped connecting piece is clamped in the L-shaped connecting groove, and a part of the L-shaped connecting piece is clamped into the limiting clamping groove to limit the relative positions of the metal inner shell and the plastic outer shell.

[0027] In the second aspect of the technical solution of the present utility model, a door and window structure is provided, including the above-mentioned transmission device.

[0028] Compared with the prior art, the present utility model has the following beneficial effects:

[0029] 1. By the sliding fit of the limiting slider of the outer shell and the limiting sliding groove of the rack, the rack is limited in movement in the length direction of the rack, thereby improving the safety of opening and closing the door and window.

[0030] 2. The rack has an arc-shaped meshing portion with a preset curve, and the gear is an eccentric gear with a preset eccentricity. By the mutual cooperation of the eccentric gear and the arc-shaped meshing portion, the rack is driven to move variably in the length direction. And, by forming limiting bosses at both ends of the inner bottom wall of the accommodating cavity, the eccentric gear is rotationally limited, so as to further improve the safety of opening and closing the door and window.

[0031] 3. When the limiting slider slides in the limiting sliding groove along the length direction of the rack, the elastic member on the limiting slider is engaged with the positioning grooves at different positions in the limiting sliding groove to help the user judge whether the engagement is in place. This not only avoids damage to the door and window caused by the user's inability to judge whether the movement is in place, but also improves the feel of using the door and window during opening and closing.

[0032] 4. By forming a limiting step on the inner wall of the accommodating cavity, the rack is supported on the limiting step, thereby restricting the relative movement of the rack and the outer shell in the width direction and improving the installation stability of the outer shell and the gear-rack mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of a transmission device of a door and window provided by an embodiment of the present utility model;

[0034] Figure 2 It is an exploded view of a transmission device of a door and window provided by an embodiment of the present utility model;

[0035] Figure 3 It is a schematic diagram of the connection structure between the metal inner shell and the rack in an embodiment of the present utility model;

[0036] Figure 4It is a schematic diagram of the structure of the limiting slide groove and the limiting slider in the embodiment of the utility model;

[0037] Figure 5 It is a schematic diagram of the eccentric gear rotating to the locking position of the door and window in the embodiment of the utility model.

[0038] In the accompanying drawings, each reference numeral represents:

[0039] 1. Shell; 11. Metal inner shell; 12. Plastic shell; 13. L-shaped connector; 111. Accommodating cavity; 112. Opening; 113. Limiting slider; 114. Limiting slot; 115. Elastic member; 116. Limiting boss; 117. Limiting step; 121. L-shaped connecting groove; 1151. Compression spring; 1152. Steel ball;

[0040] 2. Gear rack mechanism; 21. Gear; 22. Rack; 211. Mounting hole; 221. Limiting slide groove; 222. Strip groove; 2211. Positioning groove; 220. Arc meshing portion;

[0041] 3. Cover plate; 301. Connector; 31. Through hole;

[0042] 10. Hold hands. DETAILED DESCRIPTION

[0043] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0044] Since common door and window handles usually require three states: locked, horizontally opened, and suspended; corresponding to the transmission box, they are 0 degrees, 90 degrees, and 180 degrees. Therefore, in order to prevent the doors and windows from being damaged after exceeding the movement range, it is necessary to limit the range of gear rotation and rack movement. The main idea of ​​the embodiment of the utility model is: by limiting the outer shell and the gear rack mechanism, not only the movement limit of the rack is achieved, but also the rotation limit of the gear is achieved to ensure the safety of the opening and closing of the doors and windows.

[0045] like Figure 1 and Figure 2As shown in the figure, a transmission device for doors and windows provided by an embodiment of the present utility model includes a housing 1, a gear-rack mechanism 2, and a cover plate 3. Among them, the housing 1 is used to accommodate the gear 21 of the gear-rack mechanism 2 and is in limit cooperation with the rack 22 of the gear-rack mechanism 2 to limit the rotation range of the gear and the movement range of the rack. The cover plate 3 is covered on the rack and fixedly connected to the housing 1. On the one hand, it is used to connect and fix the housing 1 and the gear-rack mechanism 2, and on the other hand, it is also used to improve the overall aesthetics and dust-proof effect of the transmission device.

[0046] Specifically, as Figure 2 shown, in this embodiment, the housing 1 includes a metal inner housing 11, a plastic outer housing 12, and an L-shaped connecting piece 13. Among them, a receiving cavity 111 for accommodating the gear 21 is formed on the metal inner housing 11, and an opening 112 communicating with the receiving cavity 111 is provided on the outer wall of the metal inner housing 11. And, a limit slider 113 is formed on the inner wall of the receiving cavity 111 for sliding cooperation with the rack 22. The plastic outer housing 12 is sleeved on the outside of the metal inner housing 11, and an L-shaped connecting groove 121 is formed on the outside of the plastic outer housing 12. A limit card slot 114 is provided at a position on the outer wall of the metal inner housing 11 corresponding to the L-shaped connecting groove 121. The L-shaped connecting piece 13 is clamped in the L-shaped connecting groove 121, and a part of the L-shaped connecting piece 13 is clamped into the limit card slot 114 to limit the relative position of the metal inner housing 11 and the plastic outer housing 12.

[0047] As Figure 2 shown, in this embodiment, the gear-rack mechanism 2 includes a gear 21 and a rack 22. Among them, the gear 21 is accommodated in the receiving cavity 111, and a mounting hole 211 corresponding to the opening 112 is provided on the outside of the gear 21 for mounting a handle 10 (as Figure 4 shown). The rack 22 is arranged on the metal inner housing 11 of the housing 1 and meshes with the gear 21. And, as Figure 3 shown, a limit sliding groove 221 is provided on the rack 22 along the length direction (i.e., the X-axis direction in Figure 3 ); the limit slider 113 is in sliding cooperation with the limit sliding groove 221 to perform movement limit on the rack 22 in the length direction of the rack 22.

[0048] It can be understood that when the rack 22 meshes with the gear 21, the limit slider 113 of the metal inner housing 11 is exactly located in the limit sliding groove 221, and as the gear 21 and the rack 22 rotate and cooperate, the limit slider 113 reciprocates in the limit sliding groove 221. Thus, when the limit slider 113 moves to one end of the limit sliding groove 221, it will abut against the end face of the limit sliding groove 221, thereby restricting the continuous movement of the rack 22.

[0049] In the above embodiment, the cover plate 3 is covered on the rack 22 and connected to the housing 1 through the connecting member 301, so that the cover plate 3 and the housing 1 are relatively fixed, and the cover plate 3 and the rack 22 can move relatively. Specifically, the rack 22 is provided with a strip groove 222 along the length direction, and the cover plate 3 is provided with a through hole 31. The connecting member 301 passes through the through hole 31 and the strip groove 222 in sequence and is fixedly connected to the housing 1, and the connecting member 301 can reciprocate in the strip groove 222, so that the cover plate 3 and the housing 1 are relatively fixed, and the cover plate 3 and the rack 22 can move relatively.

[0050] like Figure 4 As shown, in the above embodiment, preferably, a plurality of preset positions of the limiting slide groove 221 are all formed with positioning grooves 2211, and an elastic member 115 matching the positioning grooves 2211 is provided on the side wall of the limiting slider 113. Thus, when the limiting slider 113 slides in the limiting slide groove 221 along the length direction of the rack 22, the elastic member 115 can be engaged with the positioning grooves 2211 at different preset positions to help the user determine whether it is engaged in place.

[0051] Specifically, in the above embodiment, the plurality of preset positions at least include a starting position, an intermediate position and an end position; wherein the starting position corresponds to the locked position of the door and window, the intermediate position corresponds to the horizontally opened position of the door and window, and the end position corresponds to the upper hanging position of the door and window. In addition, the elastic member 115 includes a compression spring 1151 and a steel ball 1152, wherein the compression spring 1151 is located between the side wall of the limiting slider 113 and the inner wall of the limiting slide groove 221, and the first end of the compression spring 1151 is fixed to the side wall of the limiting slider 113 and is always in a compressed state. Accordingly, the steel ball 1152 is fixed to the second end of the compression spring 1151, so as to press against the inner wall of the limiting slide groove 221 under the elastic force of the compression spring 1151, so as to be able to engage with the positioning groove 2211 at different positions during the movement process, and preferably, the positioning groove 2211 is an arc groove and matches the size of the steel ball.

[0052] It is understandable that when the limit slider 113 slides in the limit slot 221 along the length direction of the rack 22, the steel ball 1152 will also slide in the limit slot 221 accordingly. When the steel ball 1152 slides to the starting position, the middle position or the end position, the steel ball 1152 will be pressed against the corresponding arc-shaped positioning groove 2211 under the elastic force of the compression spring 1151, accompanied by a "click" sound to remind the user that the door is in place. In this way, it not only avoids the user from damaging the door and window due to the inability to judge whether it has been moved into place, but also improves the feel of opening and closing the door and window.

[0053] like Figure 2As shown, in the above embodiment, preferably, the rack 22 has an arc-shaped engagement portion 220 with a preset curve, and the gear 21 is an eccentric gear with a preset eccentricity. The eccentric gear 21 matches with the arc-shaped engagement portion 220 to drive the rack 22 to move variably along the length direction. It can be understood that during the rotation of the eccentric gear 21, the size of the pitch circle engaged with the rack 22 is always changing. Therefore, when the rotation speed of the handle 10 remains unchanged, the moving speed of the rack 22 is constantly changing. It can be set as follows: when the locking point is not in contact with the lock seat, the handle is in an unloaded state at this time, and the gear engagement part is a larger pitch circle, and the rack moves faster at this time; after the locking point contacts the lock seat, the gear engagement part is a smaller pitch circle, and the rack moves slower at this time, which can play a role in saving effort.

[0054] As Figure 5 shown, in the above embodiment, preferably, limiting bosses 116 are formed at both ends of the inner bottom wall of the accommodation cavity 111. The limiting bosses 116 can abut against the teeth of the eccentric gear 22 at a preset position to limit the rotation of the eccentric gear 22. Specifically, in this embodiment, the preset position includes at least the closed position of the door or window and the casement position of the door or window. Thus, after the eccentric gear 22 rotates to the closed position of the door or window (i.e., Figure 5 the position shown), one tooth of the eccentric gear 22 just abuts against Figure 5 the left limiting boss in Figure 5 to limit the rotation of the eccentric gear 22. Similarly, when the eccentric gear 22 rotates to the casement position of the door or window, one tooth of the eccentric gear 22 just abuts against

[0055] the right limiting boss in Figure 2 to limit the rotation of the eccentric gear 22. Figure 2 In addition, as

[0056] shown, in the above embodiment, a limiting step 117 is formed on the inner wall of the accommodation cavity 111. The rack 22 is supported on the limiting step 117 to limit the relative movement between the rack 22 and the housing 1 in the width direction (i.e.,

[0057] the Y-axis direction in

[0058] Based on the above embodiment, the embodiment of the present invention further provides a door and window structure. The door and window structure includes the above transmission device, and also includes a door frame, a window sash, and structures such as hardware for connection, fixation and adjustment, caulking strips, window sills, and curtain boxes. The specific structural form is not specifically described herein.

[0057] In summary, a transmission device and a door and window structure of a door and window provided by the embodiment of the present invention have the following beneficial effects:

[0058] 1. The limiting slider 113 of the metal inner shell 11 is slidably engaged with the limiting chute 221 of the rack 22 to limit the movement of the rack 22 in the length direction of the rack 22, thereby improving the safety of opening and closing the doors and windows.

[0059] 2. The rack 22 has an arc-shaped engaging portion 220 with a preset curve, and the gear 21 is an eccentric gear with a preset eccentricity. The eccentric gear 21 and the arc-shaped engaging portion 220 cooperate with each other to drive the rack 22 to move variably in the length direction. Moreover, limiting bosses 116 are formed at both ends of the inner bottom wall of the accommodating cavity 111 to limit the rotation of the eccentric gear 22, thereby further improving the safety of opening and closing the doors and windows.

[0060] 3. When the limiting slider 113 slides in the limiting chute 221 along the length direction of the rack 22, the elastic member 115 on the limiting slider 113 is engaged with the positioning grooves 2211 at different positions in the limiting chute 221 to help the user judge whether the engagement is in place. This not only avoids damage to the doors and windows caused by the user's inability to judge whether the movement is in place, but also improves the feel of using the doors and windows during opening and closing.

[0061] 4. Limiting steps 117 are formed on the inner wall of the accommodating cavity 111, so that the rack 22 is supported on the limiting steps 117, thereby restricting the relative movement of the rack 22 and the outer shell 1 in the width direction and improving the installation stability of the outer shell 1 and the gear-rack mechanism 2.

[0062] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0063] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0064] The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims described above.

Claims

1. A transmission device for doors and windows, characterized in that: include: A shell, wherein the shell has a receiving cavity, and an opening portion communicating with the receiving cavity is formed on the outer side of the shell; A gear rack mechanism, comprising a gear and a rack; wherein the gear is accommodated in the accommodating cavity, and a mounting hole corresponding to the opening is provided on the outer side of the gear for mounting the handle; the rack is arranged on the housing and meshes with the gear; A limit slider is formed on the inner wall of the accommodating cavity, and a limit slot is provided on the rack along the length direction; the limit slider is slidably matched with the limit slot to limit the movement of the rack in the length direction of the rack; A cover plate is disposed on the rack and connected to the housing through a connecting piece, so that the cover plate and the housing are relatively fixed, and the cover plate and the rack can move relatively.

2. The transmission device according to claim 1, characterized in that: Positioning grooves are formed at multiple preset positions of the position-limiting slide groove, and elastic members matching the positioning grooves are provided on the side walls of the position-limiting slide block; The limiting sliding block can slide in the sliding groove along the length direction of the rack, so that the elastic member is engaged with the positioning grooves at different preset positions.

3. The transmission device according to claim 2, characterized in that: The plurality of preset positions at least include a starting position, an intermediate position and an ending position; Among them, the starting position corresponds to the locked position of the door and window, the middle position corresponds to the horizontally opened position of the door and window, and the end position corresponds to the upper hanging position of the door and window.

4. The transmission device according to claim 2, characterized in that: The elastic member comprises: A compression spring is located between the side wall of the limiting slider and the inner wall of the limiting sliding groove, and the first end of the compression spring is fixed to the side wall of the limiting slider, and the compression spring is always in a compressed state; A steel ball is fixed to the second end of the compression spring so as to press against the inner wall of the limiting sliding groove under the elastic force of the compression spring; Wherein, the positioning groove is an arc groove and matches the size of the steel ball.

5. The transmission device according to claim 1, characterized in that: The rack has an arc-shaped meshing portion with a preset curve, and the gear is an eccentric gear with a preset eccentricity. The eccentric gear matches the arc-shaped meshing portion to drive the rack to move at a variable speed along the length direction.

6. The transmission device according to claim 5, characterized in that: Both ends of the inner bottom wall of the accommodating cavity are formed with limiting bosses, and the limiting bosses can abut against the teeth of the eccentric gear at a preset position to limit the rotation of the eccentric gear; Wherein, the preset positions at least include the locked position and the upper hanging position of the doors and windows, wherein one of the limit bosses corresponds to the locked position of the doors and windows, and the other limit boss corresponds to the upper hanging position of the doors and windows.

7. The transmission device according to claim 1, characterized in that: A limiting step is formed on the inner wall of the accommodating cavity, and the rack is supported on the limiting step to limit the relative movement of the rack and the housing in the width direction; wherein the width direction is the width direction of the rack.

8. The transmission device according to claim 1, characterized in that: A strip groove is provided on the rack along the length direction, a through hole is provided on the cover plate, the connecting member passes through the through hole and the strip groove in sequence and is fixedly connected to the shell, and the connecting member can reciprocate in the strip groove, so that the cover plate and the shell are relatively fixed, and the cover plate and the rack can move relatively.

9. The transmission device according to claim 1, characterized in that: The housing comprises: A metal inner shell, wherein the accommodating cavity is formed on the metal inner shell, and the opening is opened on the outer wall of the metal inner shell; A plastic shell is sleeved on the outer side of the metal inner shell, and an L-shaped connecting groove is formed on the outer side of the plastic shell, and a limit slot is provided on the outer wall of the metal inner shell at a position corresponding to the L-shaped connecting groove; The L-shaped connecting piece is clamped in the L-shaped connecting groove, and a part of the L-shaped connecting piece is clamped in the limiting clamping groove to limit the relative position of the metal inner shell and the plastic outer shell.

10. A door and window structure, characterized in that: Comprising a transmission device as claimed in any one of claims 1 to 9.

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