An extremely narrow lock box

Abstract

The utility model relates to an extremely narrow lock box, comprising a box body, wherein the box body is linked with a transmission rod, wherein the transmission rod is provided with a rack in the box body, wherein a transmission gear meshing with the rack is also provided in the box body, wherein the transmission gear is an incomplete gear, wherein a plurality of standard latching teeth are provided on one side of the transmission gear linked with the rack, wherein a side of the gear close to the box body is an arc surface, wherein a first compact latching tooth and a second compact latching tooth are provided at the last meshing position of the transmission gear and the rack after clockwise or counterclockwise rotation, wherein the first compact latching tooth and the second compact latching tooth are smaller than the standard gear, wherein a standard latching tooth is provided on one side of the transmission gear meshing with the rack in the box body and linked with the latching tooth, wherein a side close to the box body is an arc surface, wherein the width of the box body does not need to be considered when producing the transmission gear, wherein the length of the latching teeth close to one end of the box body is reduced, wherein the width of the box body is reduced, the applicability of the lock box is expanded, and the installation is also more convenient.

Description

Technical Field

[0001] The utility model relates to the field of hardware door and window accessories, in particular to an extremely narrow lock box. Background Art

[0002] The main function of the door and window transmission lock box is to transmit the power of the handle to achieve unlocking and locking. By rotating or operating the handle, the power is transmitted through the gears, limit pins and other mechanical structures inside the lock box, thereby driving the doors and windows to open or close. The lock box can improve the stability of doors and windows, especially in occasions with wind pressure resistance requirements. The number and layout of locking points are determined according to the local wind pressure standard value and the height of the floor to ensure the safety and stability of doors and windows.

[0003] Publication No.: CN110043117A discloses a door and window transmission lock box including a box body, a first transmission rod, a second transmission rod, a driving wheel and a driven wheel. The box body is arranged on one side of the first transmission rod, and the width of the outer side of the box body matches the width of the C-shaped notch of the standard window sash profile. The second transmission rod, the driving wheel and the driven wheel are located on the inner side of the box body. The driving wheel for connecting the handle is installed on the box body, and the driven wheel is installed on the second transmission rod. The two ends of the first transmission rod are respectively provided with connecting columns for connecting the transmission bar in the sash, and the first transmission rod is provided with a first rack on one side surface, and the second transmission rod is provided with a first rack on one side surface. A second rack is arranged on the surface, a third rack is arranged on the inner surface of the box body, the first rack and the second rack are arranged at intervals along the length direction of the first transmission rod, the first rack and the third rack are arranged opposite to each other, the driving wheel is meshed with the second rack, and the driven wheel is meshed with the first rack and the third rack at the same time, so that it can be installed quickly without grooving, but this technology uses standard gears for transmission, and the standard gear structure will widen the box body and cannot be applied to the installation grooves of all doors and windows. During installation, there is a situation where the door and window installation grooves or the lock box body need to be processed secondary before installation, so this technology still has a certain room for modification. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide an extremely narrow lock box in view of the deficiencies of the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an extremely narrow lock box, comprising a box body, a transmission rod is provided in linkage with the box body, a rack is provided in the box body, and a transmission gear meshing with the rack is also provided in the box body, characterized in that: the transmission gear is an incomplete gear, a plurality of standard latch teeth are provided on the side where the transmission gear is linked with the rack, the side of the gear close to the box body is an arc surface, and a first compact latch tooth and a second compact latch tooth are provided at the last meshing position of the transmission gear and the rack when rotating clockwise or counterclockwise, and the first compact latch tooth and the second compact latch tooth are smaller than the standard gear.

[0006] By adopting the above technical scheme, a transmission gear in the box body that is linked to the rack and meshes with the rack is provided with a standard tooth on one side, and the side close to the box body is an arc surface. The width of the box body does not need to consider the length of the tooth close to one end of the box body, which can greatly shorten the width of the box body and make the box body more compact. The transmission gear needs to rotate in the box body. The rotation angle of the transmission gear currently on the market includes but is not limited to 90° clockwise rotation or 90° counterclockwise rotation. The first compact tooth and the second compact tooth are both smaller than the standard gear, which avoids the first compact tooth and the second compact tooth in the opposite direction of the transmission gear rotating. The rigid contact with the inner wall of the box body will become an obstacle to the rotation of the transmission gear, and at the same time, the width of the gear close to the box body will not increase after rotation.

[0007] The above-mentioned extremely narrow lock box can be further configured as follows: a stable latch tooth is provided at the meshing position between the rack and the first compact latch tooth and the second compact latch tooth, the first compact latch tooth is smaller than the standard latch tooth, and the second compact latch tooth is smaller than the first compact latch tooth.

[0008] By adopting the above technical solution, when the transmission gear is rotated, the second compact tooth will be basically perpendicular to the box body to avoid conflict with the box body. The second compact tooth is made as small as possible, and the first compact tooth is inclined to the box body and will only partially conflict with the box body. The first compact tooth only needs to be smaller than the standard tooth. Since the volume of the first compact tooth and the second compact tooth is reduced, the distance between the first compact tooth and the second compact tooth becomes larger. In order to ensure the stable meshing of the transmission gear, the rack is provided with a stable tooth that cooperates with the meshing position of the first compact tooth and the second compact tooth to ensure the stable meshing of the transmission gear.

[0009] The above-mentioned extremely narrow lock box can be further configured as follows: the box body includes an upper box body and a lower box body, the upper box body and the lower box body are symmetrically provided with slide grooves, and sliding ends are provided on both sides of the transmission rod, and the sliding ends are embedded in the slide grooves.

[0010] By adopting the above technical solution, the box body is divided into an upper box body and a lower box body. The upper box body and the lower box body are provided with a slide groove. The transmission rod is embedded in the slide groove through the sliding ends arranged on both sides, so that the transmission rod can be slidably arranged in the box body. When the external handle drives the transmission gear in the box body to rotate, the transmission gear drives the connecting rod to slide through the rack, so that the connected doors and windows can produce different states.

[0011] The above-mentioned extremely narrow lock box can be further configured as follows: limiting grooves are provided at both ends of the transmission rod, and limiting blocks abutting against the limiting grooves are provided on the box body toward both ends of the limiting grooves.

[0012] By adopting the above technical solution, limit grooves are provided on both sides of the transmission rod. When the transmission gear drives the transmission rod to slide through the rack, the transmission gear cannot mesh with the rack due to the arc surface on the side facing the box body. In order to prevent the transmission gear from exceeding the linkage range with the rack, limit blocks are provided at both ends of the limit grooves facing the box body. When the transmission gear rotates to a certain range, the limit blocks abut against the limit grooves, so that the transmission gear cannot rotate, thereby preventing the transmission gear and the rack from exceeding the linkage range and thus failing to link.

[0013] The above-mentioned extremely narrow lock box can be further configured as follows: the upper box body and the lower box body are both provided with circular connecting holes at the transmission gear, the transmission gear is provided with a circular connecting end facing the connecting hole, the circular connecting end is passed through the circular connecting hole, and the transmission gear abuts against the box body on the side away from the circular connecting end.

[0014] By adopting the above technical solution, the transmission gear passes through the circular connecting end through the circular connecting hole of the upper box body or the lower box body, and the side of the transmission gear away from the circular connecting end abuts against the box body, so that the transmission gear is rotatably connected to the box body, making it convenient for the transmission gear to drive the rack and the transmission rod to move in linkage.

[0015] The above-mentioned extremely narrow lock box can be further configured as follows: the transmission gear is provided with a first mounting hole for connecting an external handle at the circular connecting hole.

[0016] By adopting the above technical solution, the external handle is inserted into the first mounting hole, so that the handle can drive the transmission gear to rotate, and the rack drives the transmission rod to make the installed doors and windows have different usage states.

[0017] The above-mentioned extremely narrow lock box can be further configured as follows: the lower box body is provided with a plurality of installation cavities for installing door and window handles, the door and window handles are provided with connecting blocks, the upper box body and the lower box body are both provided with second installation holes for connecting the connecting blocks, the second installation holes are connected to the installation cavities, and the connecting blocks are provided with third installation holes fixedly connected to external connecting parts.

[0018] By adopting the above technical solution, the door and window handle is installed in the installation cavity, the connecting block provided on the door and window handle is installed through the second installation hole, and the third installation hole provided on the connecting block enables the door and window handle to be fixedly connected to the external connecting piece.

[0019] The above-mentioned extremely narrow lock box can be further configured as follows: the lower box body is provided with a fixed plug-in block, and the upper box body is provided with a slot for the fixed plug-in block to be inserted.

[0020] By adopting the above technical solution, when the upper box body and the lower box body are installed, the setting of the fixing plug and the slot can help the upper box body and the lower box body to be positioned and installed, making the product installation easier.

[0021] The beneficial effects of the utility model are as follows: a standard latching tooth is arranged on one side of the transmission gear in the box body that is linked with the rack and the latching tooth, and a curved surface is provided on the side close to the box body, so that the width of the box body does not need to be considered in production, the length of the latching tooth close to one end of the box body, the width of the box body is reduced, the applicability of the lock box is expanded, and the installation is also easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is the internal structure diagram of the utility model;

[0024] Figure 3 It is the transmission gear structure of the utility model;

[0025] Figure 4 This is the internal structure diagram of the lower shell of the utility model;

[0026] Figure 5 It is a rear view of the lower shell of the utility model;

[0027] Figure 6 This is the internal structure diagram of the upper shell of the utility model;

[0028] Figure 7 It is the door and window handle of the utility model;

[0029] Label notes: 1-box body, 2-transmission rod, 3-rack, 4-transmission gear, 5-upper box body, 6-lower box body, 7-slide groove, 8-sliding end, 9-limiting groove, 10-limiting block, 11-circular connecting hole, 12-door and window handle, 13-installation cavity, 14-connecting block, 15-second mounting hole, 16-third mounting hole, 17-fixing plug, 18-slot, 301-stable tooth, 401-standard tooth, 402-arc surface, 403-first compact tooth, 404-second compact tooth, 405-circular connecting end, 406-first mounting hole. DETAILED DESCRIPTION

[0030] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0031] like Figure 1-4The utility model provides the following technical solution: an extremely narrow lock box, comprising a box body 1, a transmission rod 2 is provided in linkage with the box body 1, the transmission rod 2 is provided with a rack 3 in the box body 1, and a transmission gear 4 meshing with the rack 3 is also provided in the box body 1, characterized in that: the transmission gear 4 is an incomplete gear, a side of the transmission gear 4 meshing with the rack 3 is provided with a plurality of standard latch teeth 401, a side of the gear close to the box body 1 is an arc surface 402, a first compact latch tooth 403 and a second compact latch tooth 404 are provided at the last meshing position of the transmission gear 4 and the rack 3 when rotating clockwise or counterclockwise, the first compact latch tooth 403 and the second compact latch tooth 404 are smaller than the standard gear, a transmission gear 4 meshing with the rack 3 in the box body 1 is provided with a standard latch tooth 401 on the side meshing with the rack 3, and the transmission gear 4 meshing with the rack 3 is provided with a standard latch tooth 401, and the transmission gear 4 meshing with the rack 3 is provided with a standard latch tooth 401. The side close to the arc surface 402, the width of the box body 1 does not need to consider the length of the tooth close to one end of the box body 1, which can greatly shorten the width of the box body 1 and make the box body 1 more compact. The transmission gear 4 needs to rotate in the box body 1. The rotation angle of the transmission gear 4 currently on the market includes but is not limited to 90° clockwise rotation or 90° counterclockwise rotation. The first compact tooth 403 and the second compact tooth 404 are both smaller than the standard gear, so as to avoid the first compact tooth 403 and the second compact tooth 404 in the opposite direction from becoming obstacles to the rotation of the transmission gear 4 when the transmission gear 4 rotates, and at the same time, the width of the gear close to the box body 1 will not increase after the rotation. The meshing position of the rack 3 and the first compact tooth 403 and the second compact tooth 404 is provided with a stable tooth 301. The first compact latch tooth 403 is smaller than the standard latch tooth 401, and the second compact latch tooth 404 is smaller than the first compact latch tooth 403. When the transmission gear 4 is rotated, the second compact latch tooth 404 will be basically perpendicular to the box body 1 to avoid conflict with the box body 1. The second compact latch tooth 404 is made as small as possible, and the first compact latch tooth 403 is inclined to the box body 1 and will only partially conflict with the box body 1. The first compact latch tooth 403 only needs to be smaller than the standard latch tooth 401. Due to the reduction in the volume of the first compact latch tooth 403 and the second compact latch tooth 404, the distance between the first compact latch tooth 403 and the second compact latch tooth 404 will become larger. In order to ensure the stable meshing of the transmission gear 4, the rack 3 is provided with a stable latch tooth 301 that cooperates with the meshing position of the first compact latch tooth 403 and the second compact latch tooth 404 to ensure The transmission gear 4 is stably engaged, the box body 1 includes an upper box body 5 and a lower box body 6, and the upper box body 5 and the lower box body 6 are symmetrically provided with slide grooves 7. Sliding ends 8 are provided on both sides of the transmission rod 2, and the sliding ends 8 are embedded in the slide grooves 7. The box body 1 is divided into an upper box body 5 and a lower box body 6. The upper box body 5 and the lower box body 6 are provided with slide grooves 7. The transmission rod 2 is embedded in the slide grooves 7 through the sliding ends 8 provided on both sides, so that the transmission rod 2 can be slidably set in the box body 1. When the external handle drives the transmission gear 4 in the box body 1 to rotate, the transmission gear 4 drives the connecting rod to slide through the rack 3, so that the connected doors and windows can produce different states. Limiting grooves 9 are provided at both ends of the transmission rod 2, and limiting blocks 10 abutting against the limiting grooves 9 are provided at both ends of the box body 1 facing the limiting grooves 9. Limiting grooves 9 are provided on both sides of the transmission rod 2.When the transmission gear 4 drives the transmission rod 2 to slide through the rack 3, the transmission gear 4 cannot mesh with the rack 3 due to the arc surface 402 on the side facing the box body 1. In order to prevent the transmission gear 4 from exceeding the linkage range with the rack 3, limit blocks 10 are set at both ends of the box body 1 facing the limit groove 9. When the transmission gear 4 rotates to a certain range, the limit blocks 10 abut against the limit groove 9, so that the transmission gear 4 cannot rotate, thereby preventing the transmission gear 4 and the rack 3 from exceeding the linkage range and thus failing to link. The upper box body 5 and the lower box body 6 are located at the transmission gear Circular connecting holes 11 are provided at 4 locations, and the transmission gear 4 is provided with a circular connecting end 405 facing the connecting hole, and the circular connecting end 405 is penetrated through the circular connecting hole 11, and the side of the transmission gear 4 away from the circular connecting end 405 abuts against the box body 1. The transmission gear 4 penetrates the circular connecting hole 11 of the upper box body 5 or the lower box body 6 through the circular connecting end 405, and the side of the transmission gear 4 away from the circular connecting end 405 abuts against the box body 1, so that the transmission gear 4 is rotatably connected to the box body 1, so that the transmission gear 4 drives the rack 3 and the transmission rod 2 to move in linkage.

[0032] like Figure 4-7 The extremely narrow lock box shown in the figure has a transmission gear 4 located at a circular connection hole 11 and provided with a first mounting hole 406 for connecting an external handle. The external handle is inserted into the first mounting hole 406, so that the handle can drive the transmission gear 4 to rotate, thereby the rack 3 drives the transmission rod 2 to make the installed doors and windows have different usage states. The lower box body 6 is provided with a plurality of mounting cavities 13 for installing door and window handles 12. The door and window handles 12 are provided with a connecting block 14. The upper box body 5 and the lower box body 6 are both provided with a second mounting hole 15 for connecting the connecting block 14. The second mounting hole 15 is in conduction with the mounting cavity 13, and the connection The block 14 is provided with a third mounting hole 16 fixedly connected to an external connecting piece, the door and window handle 12 is installed in the mounting cavity 13, and the connecting block 14 provided for the door and window handle 12 is installed through the second mounting hole 15. The third mounting hole 16 provided for the connecting block 14 enables the door and window handle 12 to be fixedly connected to the external connecting piece, the lower box body 6 is provided with a fixed plug-in block 17, and the upper box body 5 is provided with a slot 18 for plugging the fixed plug-in block 17. When the upper box body 5 and the lower box body 6 are installed, the setting of the fixed plug-in block 17 and the slot 18 can help the positioning and installation of the upper box body 5 and the lower box body 6, making the product installation easier.

[0033] The beneficial effects of the utility model are as follows: a standard latching tooth 401 is provided on one side of the transmission gear 4 linked with the rack 3 in the box body 1 and linked with the latching tooth, and a curved surface 402 is provided on the side close to the box body 1, so that the width of the box body 1 does not need to be considered when producing the width of the latching tooth close to one end of the box body 1, thereby reducing the width of the box body 1, expanding the applicability of the lock box, and making installation easier.

Claims

1. An extremely narrow lock box, comprising a box body, the box body being linked with a transmission rod, the transmission rod being provided with a rack in the box body, and the box body being provided with a transmission gear meshing with the rack, characterized in that: The transmission gear is an incomplete gear. A plurality of standard latch teeth are provided on one side of the transmission gear linked with the rack. The side of the gear close to the box body is an arc surface. The first compact latch teeth and the second compact latch teeth are provided at the last meshing point of the transmission gear and the rack when rotating clockwise or counterclockwise. The first compact latch teeth and the second compact latch teeth are smaller than the standard gear.

2. The extremely narrow lock box according to claim 1, characterized in that: The meshing position of the rack with the first compact latching tooth and the second compact latching tooth is provided with a stable latching tooth, the first compact latching tooth is smaller than the standard latching tooth, and the second compact latching tooth is smaller than the first compact latching tooth.

3. The extremely narrow lock box according to claim 2, characterized in that: The box body comprises an upper box body and a lower box body, wherein the upper box body and the lower box body are symmetrically provided with slide grooves, and sliding ends are provided at both sides of the transmission rod, and the sliding ends are embedded in the slide grooves.

4. The extremely narrow lock box according to claim 3, characterized in that: The transmission rod is provided with limiting grooves at both ends, and the box body is provided with limiting blocks abutting against the limiting grooves towards both ends of the limiting grooves.

5. The extremely narrow lock box according to claim 4, characterized in that: The upper box body and the lower box body are both provided with circular connecting holes at the transmission gear, the transmission gear is provided with a circular connecting end facing the connecting hole, the circular connecting end is penetrated through the circular connecting hole, and the transmission gear abuts against the box body on the side away from the circular connecting end.

6. An extremely narrow lock box according to any one of claims 1 to 5, characterized in that: The transmission gear is provided with a first mounting hole for connecting an external handle at the circular connecting hole.

7. The extremely narrow lock box according to claim 3, characterized in that: The lower box body is provided with a plurality of installation cavities for installing door and window handles, and the door and window handles are provided with connecting blocks. The upper box body and the lower box body are both provided with second installation holes for connecting the connecting blocks, and the second installation holes are connected to the installation cavities. The connecting block is provided with a third installation hole fixedly connected to an external connecting piece.

8. The extremely narrow lock box according to claim 3, characterized in that: The lower box body is provided with a fixed plug-in block, and the upper box body is provided with a slot for the fixed plug-in block to be plugged in.

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