Door and window transmission box

Abstract

The utility model discloses a door and window transmission box which comprises a shell and a box body, a linkage mechanism is arranged in the shell, a driving mechanism for driving the linkage mechanism to work is arranged in the box body, the driving mechanism comprises a driving rotating shaft connected with a handle rotating shaft and a transmission piece connected with the linkage mechanism, and the transmission piece is provided with a transmission groove. The driving rotating shaft is provided with a shifting block capable of extending into the transmission groove, the shifting block abuts against the inner wall of the transmission groove when the driving rotating shaft rotates so that the transmission piece can move left and right in the box body, the box body is provided with a limiting stroke matched with the moving stroke of the transmission piece, and the two ends of the shifting block are provided with limiting parts matched with the limiting stroke to limit rotation of the driving rotating shaft. According to the transmission box, the limiting stroke on the box body is matched with the limiting part on the shifting block to limit the rotation of the driving rotating shaft, the limiting strength is good, the driving rotating shaft is effectively prevented from being overturned due to overlarge stress and excessive rotation, and detection and use of the transmission box are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a door and window transmission box belongs to door and window hardware fittings technical field. BACKGROUND

[0002] In the driving mechanism of the existing door and window transmission box, the power shaft is generally driven by the gear or the swing block and the transmission part driving linkage mechanism. When the transmission block moves left and right through the power shaft, a protrusion or an obstacle is usually arranged in the box body on both sides of the gear or the swing block to prevent the swing block from rotating excessively and separating from the transmission part. However, the small size of the swing block makes it slide and swing excessively and separate from the transmission part after being used too much.

[0003] Therefore, there is a need for a door and window transmission box with good and stable limiting effect. SUMMARY

[0004] The utility model aims at solving the problems of insufficient power shaft limiting and insufficient stability of the existing transmission box, and provides a door and window transmission box capable of effectively limiting the excessive rotation of the power shaft, and the linkage mechanism of the door and window transmission box is stable.

[0005] The utility model is implemented by the following technical solutions:

[0006] A door and window transmission box comprises a shell and a box body, the shell is internally provided with a linkage mechanism, the box body is internally provided with a driving mechanism for driving the linkage mechanism to work, and the driving mechanism comprises a driving shaft connected with a handle shaft and a transmission part connected with the linkage mechanism.

[0007] The door and window transmission box as described above is characterized in that the limiting stroke is an arc-shaped groove, and the limiting part is a protruding column extending into the arc-shaped groove.

[0008] The door and window transmission box as described above is characterized in that the driving shaft is provided with a reinforcing part surrounding the push block and located outside the transmission groove, and the driving shaft, the push block, the limiting part and the reinforcing part are integrally formed.

[0009] The door and window transmission box as described above is characterized in that the reinforcing part is a plate parallel to the surface of the transmission part.

[0010] The door and window transmission box as described above is characterized in that the head of the push block is a cylindrical body, and the reinforcing part surrounds the middle part of the outer periphery of the cylindrical body.

[0011] The door and window transmission box has the characteristics that the box body comprises a first panel and a second panel, and the first panel and the second panel are both provided with a limiting stroke.

[0012] The door and window transmission box has the characteristics that the box body further comprises a first connecting piece connecting the box body and the door and window and a second connecting piece connecting the first panel and the second panel, the second connecting piece forms a rotating accommodating position of the driving shaft, and the thickness of the peripheral wall of the rotating accommodating position exposed to the driving shaft is greater than the thickness of the peripheral wall in the rotating accommodating position.

[0013] The door and window transmission box has the characteristics that the first panel and the second panel are structurally identical, and a guide block limiting the movement of the transmission member is arranged at both ends of the limiting stroke.

[0014] The door and window transmission box has the characteristics that the linkage mechanism comprises a main transmission rack connected with the transmission member, the transmission member is provided with a first gear and a second gear at both ends of the movement stroke in the housing, the main transmission rack is provided with a first toothed part and a second toothed part meshing with the first gear and the second gear respectively, and the first toothed part and the second toothed part are respectively located on both sides of the axial direction of the main transmission rack.

[0015] The door and window transmission box has the characteristics that the main transmission rack comprises a rack main body and a connecting part connected with the transmission member, the rack main body is provided with an accommodating groove accommodating the second gear, the second toothed part is located on the inner wall of the accommodating groove, and the rack main body and the first toothed part are respectively located at both ends of the connecting part.

[0016] Compared with the prior art, the door and window transmission box has the following advantages:

[0017] The limiting stroke on the box body and the limiting part on the push block are matched to limit the rotation of the driving shaft, the limiting strength is good, the driving shaft is effectively prevented from being excessively rotated and turned over due to excessive stress, and the detection and use of the transmission box are facilitated.

[0018] The reinforcing part is arranged on the outer periphery of the push block, the stress strength of the driving shaft is improved, the transmission process is more stable and powerful, and the use life of the transmission box is prolonged.

[0019] The first toothed part and the second toothed part of the transmission rack meshing with the two gears are axially opposite and staggered, the stability of the transmission process of the transmission rack and the gear is improved, the uniformity of the stress of the transmission rack is improved, and the use life of the transmission box is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1A three-dimensional structure schematic view of the utility model;

[0021] Figure 2 A partial exploded structure schematic view of the utility model;

[0022] Figure 3 A structure schematic view of the driving shaft and the pushing block of the utility model;

[0023] Figure 4 A partial exploded structure schematic view of the transmission member, the driving shaft and the box body of the utility model. DETAILED DESCRIPTION

[0024] The utility model will be further explained in detail in combination with specific embodiments.

[0025] As Figures 1-4 shown, a door and window transmission box, including casing 1 and box body 2, be equipped with linkage mechanism 3 in casing 1, be equipped with the driving mechanism 4 of driving linkage mechanism 3 work in box body 2, the driving mechanism 4 includes with the driving shaft 41 of handle shaft connection and the transmission member 42 of connecting linkage mechanism 3, transmission member 42 is equipped with transmission groove 421, driving shaft 41 is equipped with the pushing block 411 that can be extended into transmission groove 421, pushing block 411 when driving shaft 41 rotates pushes the inner wall of transmission groove 421 and makes transmission member 42 move left and right in box body 2, box body 2 is equipped with the limit stroke 21 of matching the moving stroke of transmission member 42, the both ends of pushing block 411 are equipped with the limit part 412 of cooperating limit stroke 21 and limiting driving shaft 41 rotation. Limit part 412 cooperates with limit stroke 21 and limits the rotation end point of driving shaft 41, prevents driving shaft 41 from turning over and damaging in detection or use process, improves the transmission stability of transmission box.

[0026] One preferred embodiment of the utility model, limit stroke 21 is arc-shaped groove, and limit part 412 is the convex column that extends into arc-shaped groove. The both ends of arc-shaped groove surround at least half of the outer periphery of convex column, and the limiting effect is powerful and stable, and the structure is simple and low in cost. Of course, limit part 412 can also be an arc-shaped groove with two open ends, limit stroke 21 is designed as an arc-shaped convex part and is enlarged at the end, as the movement end point of arc-shaped groove.

[0027] One preferred embodiment of the utility model, driving shaft 41 is equipped with the reinforcing part 413 that surrounds pushing block 411 and is located outside transmission groove 421, and driving shaft 41, pushing block 411, limit part 412 and reinforcing part 413 are integrally formed, to improve the strength of driving member.

[0028] In order to further improve the strength, the reinforcing part 413 is a plate parallel to the surface of the transmission member 42, and also limits and guides the cooperation movement of the pushing block 411 and the transmission groove 421.

[0029] In an embodiment of the utility model, the box body 2 comprises a first panel 22 and a second panel 23, the first panel 22 and the second panel 23 are both provided with a limiting stroke 21; the box body 2 further comprises a first connecting piece 24 connecting the box body 2 and the door and window and a second connecting piece 25 connecting the first panel 22 and the second panel 23, a rotating accommodating position 26 of the driving shaft 41 is formed between the two second connecting pieces 25, and the thickness of the peripheral wall of the rotating accommodating position 26 is greater than the thickness of the peripheral wall inside the rotating accommodating position 26. The middle hole of the driving shaft 41 is a square hole, and the half of the peripheral wall of the driving shaft 41 connecting the pushing block 411 is thickened, so as to further enhance the strength of the driving member.

[0030] In order to facilitate the installation of the transmission box without distinguishing the front and back sides, the first panel 22 and the second panel 23 are of the same structure; preferably, a guide block 27 limiting the movement of the transmission member 42 is arranged at both ends of the limiting stroke 21, so as to facilitate the rapid reciprocating movement of the transmission member 42.

[0031] In an embodiment of the utility model, the linkage mechanism 3 comprises a main transmission rack 31 connected with the transmission member 42, the transmission member 42 is provided with a first gear 32 and a second gear 33 at both ends of the moving stroke in the shell 1, the main transmission rack 31 is provided with a first toothed part 311 and a second toothed part 312 meshing with the first gear 32 and the second gear 33 respectively, the first toothed part 311 and the second toothed part 312 are respectively located at both sides of the axial direction of the main transmission rack 31, and the transmission is guided from both sides of the axial direction respectively, so that the transmission movement is more stable.

[0032] Further, the main transmission rack 31 comprises a rack main body 310 and a connecting part 313 connected with the transmission member 42, the rack main body 310 is provided with an accommodating groove 314 accommodating the second gear 33, the second toothed part 312 is located on the inner wall of the accommodating groove 314, and the rack main body 310 and the first toothed part 311 are respectively located at both ends of the connecting part 313. The main transmission rack 31 is integrally formed, so as to ensure the strength, and the two gears are driven, so that the transmission movement is more smooth.

[0033] In the use, the handle rotating rod is inserted into the middle square hole of the driving rotating shaft 41, when rotating, the pushing block 411 moves left and right in the transmission groove 421 to push the transmission part 42, thereby driving the main transmission rack 31 and the transmission of the first gear 32 and the second gear 33, the driven rack 34 also moves correspondingly, realizing the bidirectional transmission of the linkage mechanism 3, in the transmission process, the limiting stroke 21 limits the end point of the limiting part 412, thereby limiting the rotating end point of the pushing block 411, avoiding that the driving rotating shaft 41 rotates excessively and separates from the transmission part 42.

Claims

1. A door and window transmission box, comprising a housing (1) and a box body (2), wherein the housing (1) is provided with a linkage mechanism (3), and the box body (2) is provided with a drive mechanism (4) for driving the linkage mechanism (3) to work, characterized in that: The driving mechanism (4) comprises a driving shaft (41) connected with the handle rotating shaft and a transmission member (42) connected with the linkage mechanism (3), the transmission member (42) is provided with a transmission groove (421), the driving shaft (41) is provided with a pushing block (411) capable of extending into the transmission groove (421), the pushing block (411) pushes the inner wall of the transmission groove (421) when the driving shaft (41) rotates, so that the transmission member (42) moves left and right in the box body (2), the box body (2) is provided with a limiting stroke (21) matched with the moving stroke of the transmission member (42), and the two ends of the pushing block (411) are provided with limiting portions (412) matched with the limiting stroke (21) to limit the rotation of the driving shaft (41).

2. A transmission box for doors and windows according to claim 1, characterized in that The limiting stroke (21) is an arc-shaped groove, and the limiting portion (412) is a convex column extending into the arc-shaped groove.

3. A transmission box for doors and windows according to claim 1, characterized in that The driving shaft (41) is provided with a reinforcing portion (413) surrounding the pushing block (411) and located outside the transmission groove (421), and the driving shaft (41), the pushing block (411), the limiting portion (412) and the reinforcing portion (413) are integrally formed.

4. A transmission box for doors and windows according to claim 3, characterized in that The reinforcing portion (413) is a plate parallel to the surface of the transmission member (42).

5. A transmission box for doors and windows according to claim 3, characterized in that The head of the pushing block (411) is a cylinder, and the reinforcing portion (413) surrounds the middle part of the outer periphery of the cylinder.

6. A door and window transmission box according to claim 1, characterized in that The box body (2) comprises a first panel (22) and a second panel (23), and the first panel (22) and the second panel (23) are both provided with limiting strokes (21).

7. A transmission box for doors and windows according to claim 6, characterized in that The box body (2) further comprises a first connecting member (24) connecting the box body (2) and the door and window and a second connecting member (25) connecting the first panel (22) and the second panel (23), the second connecting member (25) forms a rotating accommodating position (26) of the driving shaft (41), and the thickness of the peripheral wall of the driving shaft (41) exposed to the rotating accommodating position (26) is greater than the thickness of the peripheral wall in the rotating accommodating position (26).

8. A transmission box for doors and windows according to claim 6, characterized in that The first panel (22) and the second panel (23) are structurally identical, and a guide block (27) limiting the movement of the transmission member (42) is arranged at the two ends of the limiting stroke (21).

9. A door and window transmission box according to claim 1, characterized in that The linkage mechanism (3) comprises a main transmission rack (31) connected with the transmission member (42), the transmission member (42) is provided with a first gear (32) and a second gear (33) at the two ends of the moving stroke in the shell (1), the main transmission rack (31) is provided with a first toothed portion (311) and a second toothed portion (312) meshing with the first gear (32) and the second gear (33) respectively, and the first toothed portion (311) and the second toothed portion (312) are located on the two sides of the axial direction of the main transmission rack (31) respectively.

10. A door and window transmission box according to claim 9, characterized in that The main transmission rack (31) comprises a rack body (310) and a connecting part (313) connected with the transmission part (42), the rack body (310) has a containing groove (314) containing the second gear (33), the second tooth part (312) is located on the inner wall of the containing groove (314), and the rack body (310) and the first tooth part (311) are respectively located at two ends of the connecting part (313).

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