Novel transmission box

Abstract

The utility model discloses a novel transmission box which comprises a box body, the box body is further provided with a transmission cavity, the transmission cavity is provided with an arc-shaped main transmission stroke, the box body in the transmission cavity is in pivot joint with a handle, the handle is connected with a first transmission piece, the first transmission piece is movably connected with the main transmission stroke, and the transmission cavity is provided with a second transmission piece movably connected with the first transmission piece. And the handle rotates to drive the first transmission part to move along the arc-shaped main transmission stroke so as to drive the second transmission part to move, so that the door and window lock is opened or closed. The arc-shaped transmission stroke and the two movable connection transmission pieces are used for achieving the transmission process that rotation of a gear-free rack is changed into linear movement, the transmission stroke is increased, meanwhile, the transmission structure of the transmission box is simplified, the precision requirement of transmission parts of the transmission box is lowered, the transmission box is easier to install and maintain, and cost is saved.

Description

Technical Field

[0001] This utility model relates to a novel transmission box, particularly a transmission box for concealed handles, and belongs to the field of door and window lock technology. Background Technology

[0002] The transmission box is a crucial structure in door and window locks, converting the rotational stroke of the door / window handle into the movement stroke of the transmission components. Existing transmission box structures are mostly gear and rack structures or lever transmission structures. The transmission structures of existing transmission boxes are limited by the internal space of the box, resulting in a limited transmission stroke. Furthermore, existing gear and rack drives and lever drives are prone to wear and tear, leading to transmission failure.

[0003] Therefore, how to further increase the transmission stroke and improve transmission stability within a limited space is a field that needs continuous research and improvement. Utility Model Content

[0004] The purpose of this invention is to solve the problem of limited transmission stroke in existing transmission boxes and to provide a new type of transmission box with a large transmission stroke and stable transmission.

[0005] This utility model is achieved through the following technical solution:

[0006] A novel transmission box includes a box body, characterized in that the box body further comprises a transmission cavity, the transmission cavity having an arc-shaped main transmission stroke, a handle pivotally connected to the box body within the transmission cavity, the handle being connected to a first transmission component, the first transmission component being movably connected to the main transmission stroke, and the transmission cavity having a second transmission component movably connected to the first transmission component. The rotation of the handle drives the first transmission component to move along the arc-shaped main transmission stroke, thereby driving the second transmission component to move, causing door and window locks to open or close.

[0007] The novel transmission box described above is characterized in that the main transmission stroke is a semi-circular arc groove or a U-shaped arc groove, and the pivot point between the handle and the box body is located between the two ends of the arc groove.

[0008] The novel transmission box described above is characterized in that the box body is provided with a receiving cavity, the transmission cavity is formed on the outer wall of the receiving cavity, the main transmission stroke connects the receiving cavity and the transmission cavity, the first transmission member is disposed in the receiving cavity, and the free end of the first transmission member extends from the receiving cavity through the main transmission stroke into the transmission cavity.

[0009] The novel transmission box described above is characterized in that the portion of the first transmission member that moves within the main transmission stroke is a transmission rod, the second transmission member is provided with a transmission groove for the first transmission member to move, and a limiting structure is provided between the first transmission member and the transmission groove.

[0010] The novel transmission box described above is characterized in that the second transmission component is provided with at least one guide member that slides along the surface of the box body, and the box body is provided with at least one guide portion that matches the guide member to form a guide pair.

[0011] The novel transmission box described above is characterized in that the guide slide includes a first guide slide and a second guide slide disposed at both ends of the second transmission slide, and the guide slide portion includes a first guide slide portion and a second guide slide portion respectively matched with the first guide slide and the second guide slide.

[0012] The novel transmission box described above is characterized in that the box body is provided with a cover that covers the transmission cavity, and the inner side of the cover is provided with a secondary transmission stroke corresponding to the main transmission stroke.

[0013] The novel transmission box described above is characterized in that the cover is provided with a secondary guide slide portion that matches the guide slide member.

[0014] The novel transmission box described above is characterized in that the limiting structure includes a limiting protrusion or a limiting groove provided on the first transmission member, and the second transmission member is provided with a limiting recess or a limiting rib surrounding the transmission groove and matching the limiting protrusion or the limiting groove.

[0015] The novel transmission box described above is characterized in that the handle is a hidden handle that can be retracted into the receiving cavity, the handle is pivotally connected to the box body within the receiving cavity, and the first transmission member is a transmission rod disposed at the inner end of the handle.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] This invention utilizes an arc-shaped transmission stroke and two movable connecting transmission components to achieve a transmission process that transforms the rotation of a gearless rack into linear motion. While increasing the transmission stroke, it greatly simplifies the transmission structure of the transmission box, reduces the precision requirements of the transmission components, makes the transmission box easier to install and maintain, and saves costs.

[0018] In this invention, the guide slide of the second transmission component forms a sliding pair with the guide slide of the box body, which improves the transmission speed and smoothness of the transmission structure. The first transmission component moves simultaneously between the two transmission strokes of the box body and the cover body to achieve transmission, which improves the effectiveness of the transmission process and the service life of the transmission box. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is an exploded structural diagram of the present invention;

[0021] Figure 3 This utility model shows a structural schematic diagram of the transmission component at one end of the transmission stroke;

[0022] Figure 4 This utility model presents a structural schematic diagram of the transmission component in the middle of the transmission stroke;

[0023] Figure 5 This is an exploded structural diagram of a portion of the present invention;

[0024] Figure 6 This utility model shows a structural schematic diagram of the transmission component at the other end of the transmission stroke. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to specific embodiments.

[0026] like Figure 1-6 As shown, a novel transmission box includes a box body 1 with a transmission cavity 11 containing a transmission structure. A handle 2 is pivotally connected to the box body 1 within the transmission cavity 11 via a pivot shaft 21. The transmission structure includes an arc-shaped main transmission stroke 3 located at the bottom of the transmission cavity 11. The handle 2 is connected to a first transmission component 4, which is movably connected to the main transmission stroke 3. The transmission cavity 11 has a second transmission component 5 movably connected to the first transmission component 4. Rotation of the handle 2 drives the first transmission component 4 to move along the arc-shaped main transmission stroke 3, thereby moving the second transmission component 5 and opening or closing door / window locks. In this invention, during the rotation of the handle 2, the first transmission component 4 moves within the arc-shaped main transmission stroke 3, thereby driving the second transmission component 5 to move linearly. This transforms the rotation process of the handle 2 into the linear movement process of the second transmission component 5, eliminating the need for gears and racks, simplifying the transmission box structure, and increasing the transmission stroke of the transmission structure.

[0027] Preferably, the main transmission stroke 3 is a semi-circular arc groove or a U-shaped arc groove, and the pivot point between the handle 2 and the housing 1 is located between the two ends of the arc groove. This achieves a compact layout of the transmission structure and maximizes the stroke. More preferably, the housing 1 is provided with a receiving cavity 10, and a transmission cavity 11 is formed on the outer wall of the receiving cavity 10. The main transmission stroke 3 connects the receiving cavity 10 and the transmission cavity 11. The first transmission member 4 is disposed in the receiving cavity 10, and the free end of the first transmission member 4 extends from the receiving cavity 10 through the main transmission stroke 3 into the transmission cavity 11 and connects with the second transmission member 5. The main part of the first transmission member 4 and the second transmission member 5 are separated into different cavities, which is more conducive to the stable movement of the transmission structure and avoids mutual interference.

[0028] In a preferred embodiment of this utility model, the portion of the first transmission member 4 that moves within the main transmission stroke 3 is a transmission rod. The second transmission member 5 is provided with a transmission groove 51 for the first transmission member 4 to move in, and a limiting structure is provided between the first transmission member 4 and the transmission groove 51. The first transmission member 4 moves within the transmission groove 51 while moving in the main transmission stroke 3, thereby driving the second transmission member 5 to reciprocate linearly along the housing 1. Further, the limiting structure includes a limiting protrusion 41 or a limiting groove provided on the first transmission member 4, and the second transmission member 5 is provided with a limiting recess 55 or a limiting rib that surrounds the transmission groove 51 and matches the limiting protrusion 41 or the limiting groove. The limiting structure strengthens the connection between the first transmission member 4 and the second transmission member 5, preventing the first transmission member 4 from disengaging from the transmission groove 51 and the main transmission stroke 3.

[0029] To improve the transmission efficiency of the second transmission component 5 in linear reciprocating motion, the second transmission component 5 is provided with at least one guide member that slides along the surface of the housing 1, and the housing 1 is provided with at least one guide part that matches the guide member to form a guide pair. When the guide member is a track-like structure, the guide part is a matching groove-like structure; when the guide member is a groove-like structure, the guide part is a matching rail-like structure, forming a mortise and tenon guide pair to ensure the stability of the reciprocating linear motion of the second transmission component 5.

[0030] In a preferred embodiment of the guide pair, the guide members include a first guide member 52 and a second guide member 53 disposed at both ends of the second transmission member 5, and the guide portion includes a first guide portion 12 and a second guide portion 13 respectively matching the first guide member 52 and the second guide member 53. Further, the first guide member 52 and the first guide portion 12, the second guide member 53 and the second guide portion 13 are parallel to each other, ensuring the stability of the reciprocating linear motion of the second transmission member 5 from both ends of the transmission groove 51 and preventing the second transmission member 5 from tilting. Specifically, the first guide member 52 and the first guide portion 12 are disposed on the outer wall of the housing 1, and the second guide member 53 and the second guide portion 13 are located within the transmission cavity 11, maintaining the overall simple appearance of the housing 1.

[0031] In a preferred embodiment of this utility model, the length and width of the first guide slide 52 are both greater than the length of the second guide slide 53, and a reinforcing part 54 coaxial with the first guide slide 52 is provided between the second transmission part 5 and the first guide slide 52 to strengthen the transmission connection between the second transmission part 5 and the upper and lower locks of the door and window.

[0032] Furthermore, the box body 1 is provided with a cover 6 that covers the transmission cavity 11, and the inner side of the cover 6 is provided with a secondary transmission stroke 61 corresponding to the main transmission stroke 3. The free end of the transmission rod of the first transmission member 4 extends into the secondary transmission stroke 61. The dual transmission strokes, in conjunction with the rotation of the handle 2, make the transmission more efficient and stable, avoiding tilting and twisting during the transmission process, which would affect the transmission efficiency. The secondary transmission stroke 61 is preferably a groove that does not penetrate the cover 6. After the cover 6 is installed, its outer surface is flush with the surface of the box body 1, maintaining the simple and beautiful appearance of the transmission box and making it easy to install. Of course, the secondary transmission stroke 61 can also be a matching arc-shaped rib, with a matching recessed cavity at the top of the first transmission member 4 to allow for smooth movement.

[0033] Furthermore, the cover 6 is provided with a secondary guide slide portion that matches the guide slide member. In one embodiment, the cover 6 is provided with a first secondary guide slide portion 62 that matches the first guide slide member 52. The first secondary guide slide portion 62 matches the first guide slide portion 12 of the box body 1 on both sides of the first guide slide member 52 and provides guidance and sliding, so that the first guide slide member 52 can be effectively guaranteed not to be misaligned during transmission. Of course, a second secondary guide slide portion and a second guide slide portion 13 can also be provided on the cover 6 at the second guide slide member 53 to guide sliding from both sides of the second guide slide member 53, but this structure is not shown in this utility model.

[0034] This utility model's transmission box can be applied to common handles as well as concealed handles. When the handle 2 is a concealed handle, it is pivotally connected to the box body 1 within the transmission cavity 11 in the receiving cavity 10. One end of the first transmission member 4 is connected to the inner end 20 of the handle 2, and the other end passes through the main transmission stroke 3 and extends into the secondary transmission stroke 61. When the handle 2 rotates from one end of the receiving cavity 10 to the other, one transmission stroke is completed, and the handle 2 is completely retracted into the receiving cavity 10. When the handle 2 is an exposed handle, the first transmission member 4 is fixedly connected to the handle 2 and rotates together with the handle 2 to connect to the box body 1. The first transmission member 4 moves along the main transmission stroke 3 as the handle 2 rotates, completing one transmission stroke.

[0035] The transmission box of this utility model has a simple overall structure, increased transmission stroke, and stable and robust transmission process. It will not fail due to long gear and rack meshing time and loose meshing, thus effectively extending the service life of the transmission box.

Claims

1. A novel transmission box, comprising a box body (1), characterized in that: The box body (1) is also provided with a transmission cavity (11), the transmission cavity (11) is provided with an arc-shaped main transmission stroke (3), the box body (1) inside the transmission cavity (11) is pivotally connected to a handle (2), the handle (2) is connected to a first transmission component (4), the first transmission component (4) is movably connected to the main transmission stroke (3), the transmission cavity (11) is provided with a second transmission component (5) movably connected to the first transmission component (4), the handle (2) rotates to drive the first transmission component (4) to move along the arc-shaped main transmission stroke (3) thereby driving the second transmission component (5) to move, so that the door and window locks open or close.

2. The novel transmission box according to claim 1, characterized in that: The main drive stroke (3) is a semi-circular arc groove or a U-shaped arc groove, and the pivot point between the handle (2) and the box (1) is located between the two ends of the arc groove.

3. A novel transmission box according to claim 2, characterized in that: The box body (1) is provided with a receiving cavity (10), and the transmission cavity (11) is formed on the outer wall of the receiving cavity (10). The main transmission stroke (3) connects the receiving cavity (10) and the transmission cavity (11). The first transmission member (4) is located in the receiving cavity (10). The free end of the first transmission member (4) extends from the receiving cavity (10) through the main transmission stroke (3) into the transmission cavity (11).

4. A novel transmission box according to claim 1, characterized in that... The first transmission member (4) has a transmission rod that moves within the main transmission stroke (3). The second transmission member (5) has a transmission groove (51) for the first transmission member (4) to move. A limiting structure is provided between the first transmission member (4) and the transmission groove (51).

5. A novel transmission box according to any one of claims 1-4, characterized in that... The second transmission component (5) is provided with at least one guide component that slides along the surface of the box body (1), and the box body (1) is provided with at least one guide part that matches the guide component to form a guide pair.

6. A novel transmission box according to claim 5, characterized in that... The guide slide includes a first guide slide (52) and a second guide slide (53) disposed at both ends of the second transmission component (5), and the guide slide portion includes a first guide slide portion (12) and a second guide slide portion (13) respectively matching the first guide slide (52) and the second guide slide (53).

7. A novel transmission box according to claim 5, characterized in that... The box body (1) is provided with a cover (6) that covers the transmission cavity (11), and the inner side of the cover (6) is provided with a secondary transmission stroke (61) corresponding to the main transmission stroke (3).

8. A novel transmission box according to claim 7, characterized in that... The cover (6) is provided with a secondary guide part that matches the guide member.

9. A novel transmission box according to claim 4, characterized in that... The limiting structure includes a limiting protrusion (41) or a limiting groove provided on the first transmission member (4), and the second transmission member (5) is provided with a limiting recess (55) or a limiting rib that surrounds the transmission groove (51) and matches the limiting protrusion (41) or the limiting groove.

10. A novel transmission box according to any one of claims 1-4, characterized in that... The handle (2) is a hidden handle that can be stored in the receiving cavity (10). The handle (2) is pivotally connected to the box body (1) in the receiving cavity (10). The first transmission member (4) is a transmission rod located at the inner end of the handle (2).

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