Bolt lock for doors and windows

Abstract

The utility model relates to the technical field of door and window accessories, in particular to a bolt lock for doors and windows, a gear piece is rotatably arranged in a lock base, four positioning grooves and a plurality of convex teeth are annularly arranged on the outer curved surface of the gear piece, positioning balls abutting against the positioning grooves are symmetrically arranged in the lock base, and the convex teeth are arranged on the outer curved surface of the gear piece. The positioning ball is elastically connected to the lock base through a spring, a rack is arranged at one end of the sliding plate, the other end of the sliding plate is connected to the plug pin, a polygonal groove is formed in the gear piece in a sunken mode, a connecting hole is formed in the bottom of the polygonal groove, the handle is provided with a connecting column matched with the polygonal groove, and a first through hole is formed in the connecting column. The lever handle penetrates through the first through hole through a screw and is fixedly connected with the connecting hole, so that connection and transmission of the lever handle and the gear piece are tighter, the phenomena of loosening and slipping during rotation of the lever handle are prevented, meanwhile, the lever handle is prevented from deviating from the original position, pause buffering can be achieved every time the lever handle rotates by 90 degrees, the gears can be clearly fed back to the human hand, and the operation texture of the bolt lock is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of door and window accessories, and in particular to a bolt lock for doors and windows. Background Technology

[0002] Door and window bolt locks are devices used for locking doors and windows. Their working principle is simple and effective; the insertion and removal of the bolt locks the doors and windows. With the rapid development of the door lock industry, the types and structures of bolts have become increasingly diversified, with top and bottom bolts being one of them. Existing top and bottom bolt locks all use a two-way transmission box drive, with a linkage structure consisting of either a gear and rack or a connecting rod and crank. In particular, the gear and rack linkage structure includes a handle, a gear, and a rack. The handle is directly connected to the gear by screws, and the gear meshes with the rack, driving the rack to move up and down. The screw connection between the handle and the gear is not tight enough, and there is a gap between the handle and the gear. Especially after repeated use, the rotation is prone to loosening and slippage. At the same time, the gear and rack positions mostly require the handle to rotate 180 degrees. However, due to the lack of a positioning structure in the current transmission box, the handle does not stop during rotation and is prone to deviating from its original position. The feedback of the position to the hand during rotation is not obvious. Utility Model Content

[0003] The present invention provides a bolt lock for doors and windows, which makes the connection and transmission between the handle and the gear more tight, while the handle is less likely to shift and the gear feedback is clear.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a door and window latch lock, comprising a lock base, a gear component, a sliding plate component, a latch, and a handle. The gear component is rotatably disposed within the lock base. The outer curved surface of the gear component is provided with four positioning grooves and multiple protruding teeth in an annular arrangement. Positioning beads are symmetrically arranged within the lock base, abutting against the positioning grooves. The positioning beads are elastically connected to the lock base by springs. One end of the sliding plate component is provided with a rack that meshes with the protruding teeth, and the other end is connected to the latch. The side of the gear component facing the handle has a recessed polygonal groove. A connecting hole is provided at the bottom of the polygonal groove. The handle is provided with a connecting post that matches the polygonal groove. The connecting post has a first through hole penetrating the handle. The handle is fixedly connected to the connecting hole by a screw passing through the first through hole.

[0005] Furthermore, the lock base includes a faceplate, the handle is disposed on the front of the faceplate, and the faceplate is provided with a second through hole for the connecting post to pass through.

[0006] Furthermore, the lock base has two symmetrical grooves inside, and the groove openings correspond to the gear components. The positioning bead and the spring are both disposed in the grooves.

[0007] Furthermore, the cover plate is provided with a baffle for positioning the gear component, centered on the second through hole.

[0008] Furthermore, the sliding plate is connected to the pin via a transmission bar.

[0009] Furthermore, the lock base, sliding plate, transmission bar, and pin are all provided with protruding insert plates, and the lock base is provided with set screws.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: the multi-sided groove on the gear component allows the connecting post of the handle to be inserted, and the connecting post is provided with a first through hole. The bottom of the multi-sided groove is provided with a connecting hole. The screw passes through the first through hole and connects with the connecting hole on the gear component. The double connection structure makes the connection and transmission between the handle and the gear component tighter, preventing the handle from becoming loose or slipping during rotation. At the same time, a positioning bead is provided, which works with the four positioning grooves arranged in a ring on the gear component to prevent the handle from deviating from its original position. The handle can stop and buffer every 90 degrees of rotation, and the gear position can be clearly fed back to the user, improving the operation quality of the latch lock. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 This is an exploded view of the present invention.

[0013] Figure 3 This is a schematic diagram showing the connection between the sliding plate and the pin in this utility model.

[0014] Figure 4 This is a perspective view of the lock base in this utility model.

[0015] Figure 5 This is a perspective view of the gear component in this utility model from the frontal view angle.

[0016] Figure 6 This is a perspective view of the gear component from the rear side angle in this utility model.

[0017] Figure 7 This is a perspective view of the handle in this utility model.

[0018] Figure 8 This is a perspective view of the cover plate of this utility model.

[0019] Figure 9 This is an installation diagram of the present invention.

[0020] In the diagram: 1. Lock base; 2. Gear component; 3. Sliding plate component; 4. Pin; 5. Handle; 10. Face cover plate; 11. Positioning bead; 12. Groove; 21. Positioning slot; 22. Raised tooth; 30. Rack; 31. Transmission bar; 44. Insert plate; 51. Connecting post; 100. Set screw; 102. Second through hole; 111. Spring; 123. Baffle; 201. Polygonal groove; 202. Connecting hole; 400. Sound-absorbing adhesive; 500. First through hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] As shown in the attached diagram, this utility model discloses a bolt lock for doors and windows, comprising a lock base 1, a gear component 2, a sliding plate 3, bolts 4, and a handle 5. It should be noted that the bolt lock is entirely housed within the profile and equipped with two bolts 4, which are positioned vertically at opposite ends. The bolts 4 are also fitted with sound-absorbing adhesive. Locking is achieved by the bolts 4 extending from both ends of the profile and connecting to the frame. The gear component 2 is rotatably mounted within the lock base 1. The outer curved surface of the gear component 2 has four positioning grooves 21 and multiple protruding teeth 22 arranged in a ring. A groove edge protrudes between adjacent positioning grooves 21. Positioning beads 11 are symmetrically arranged within the lock base 1, abutting against the positioning grooves 21. Figure 2As shown, two positioning beads 11 are symmetrically arranged vertically within the lock base 1. The positioning beads 11 are elastically connected to the lock base 1 by springs 111. Two sliding plates 3 are provided, corresponding to the pins 4. One end of each sliding plate 3 is engaged with a tooth 22, and the other end is connected to the pin 4. Specifically, one end of each sliding plate 3 has a rack 30 engaged with the tooth 22, and the rack 30 is located inside the lock base 1. The gear 2 has a polygonal groove 201 recessed on the side facing the handle 5. A connecting hole 202 is provided at the bottom of the polygonal groove 201. The handle 5 has a connecting post 51 matching the polygonal groove 201. The end of the connecting post 51 is also polygonal, inserted into the polygonal groove 201, and the other end is cylindrical and passes through the second through hole 102. A first through hole 500 is provided through the handle 5. The handle 5 is fixedly connected to the connecting hole 202 by a screw passing through the first through hole 500. In the open state, the handle 5 faces upward. At this time, the two positioning beads 11 cooperate with the two positioning grooves 21 located in the longitudinal direction of the gear component 2. People drive the gear component 2 to rotate by the handle 5, and the gear component 2 drives the sliding plate 3 to move up and down, so that the pin 4 protrudes or retracts from the fan-shaped material to achieve locking or unlocking. While the gear component 2 is rotating, the positioning beads 11 exit from the original positioning groove 21 and compress the spring 111 until the positioning beads 11 correspond to the transverse positioning groove 21. Under the action of the spring 111, they protrude again into the corresponding positioning groove 21. At this time, the rotation is 90 degrees. After rotating 90 degrees again, the positioning beads 11 exit the positioning groove 21 and re-cooperate with the longitudinal positioning groove 21.

[0023] This utility model discloses a door and window bolt lock. A polygonal groove 201 on the gear component 2 allows the connecting post 51 of the handle 5 to be inserted. The connecting post 51 has a first through hole 500, and the bottom of the polygonal groove 201 has a connecting hole 202. A screw passes through the first through hole 500 and connects to the connecting hole 202 on the gear component 2. This double connection structure makes the connection and transmission between the handle 5 and the gear component 2 tighter, preventing the handle 5 from loosening or slipping during rotation. A positioning bead 11 is also provided, which works in conjunction with the four positioning grooves 21 arranged in a ring on the gear component 2 to prevent the handle 5 from deviating from its original position. Every 90 degrees the handle 5 rotates, the positioning bead 11 engages with the corresponding positioning groove 21, achieving a pause and buffering effect. The position is clearly responsive to the user, improving the operational feel of the bolt lock.

[0024] In this embodiment, the lock base 1 includes a face plate 10, and the handle 5 is disposed on the front of the face plate 10. The face plate 10 is provided with a second through hole 102 for the connecting post 51 to pass through. The lock base 1 and the face plate 10 are connected. The connecting post 51 of the handle 5 enters the interior of the lock base 1 through the second through hole 102 and cooperates with the gear component 2. The connecting post 51 is constrained by the second through hole 102 to prevent the handle 5 from rotating and deviating.

[0025] In this embodiment, the lock base 1 is provided with two symmetrical grooves 12 inside, and the groove opening of the groove 12 corresponds to the gear component 2. The positioning bead 11 and the spring 111 are both set in the groove 12. The positioning bead 11 and the spring 111 can be placed into the groove 12 of the lock base 1 first, and then the cover plate 10 is installed to close the groove 12, leaving only the groove opening corresponding to the gear component 2. One end of the spring 111 abuts against the bottom of the groove 12, and the other end abuts against the positioning bead 11. The positioning bead 11 and the spring 111 both move in the groove 12.

[0026] In this embodiment, the cover plate 10 is provided with a baffle 123 for positioning the gear component 2, with the second through hole 102 as the center, to prevent the gear component 2 from shifting when rotating, and to facilitate the rotation of the center of the gear component 2.

[0027] In this embodiment, the sliding plate 3 is connected to the pin 4 via the transmission bar 31. Since the pin 4 is locked by protruding from the end face of the profile and being inserted into the frame, the transmission bar 31 can effectively extend the pin 4.

[0028] In this embodiment, the lock base 1, sliding plate 3, transmission bar 31, and pin 4 are all provided with protruding insert plates 44. The lock base 1 is provided with a set screw 100. The insert plate 44 is slidably connected to the hardware groove of the profile. That is, the lock base 1, sliding plate 3, transmission bar 31, and pin 4 can all slide up and down on the profile using the insert plate 44. The sound-silencing adhesive is also provided with a corresponding insertion part to the hardware groove. The set screw 100 is screwed from the cover plate 10 toward the lock base 1 until it hits the bottom of the hardware groove of the profile. The set screw 100 is used to lift the lock base 1, so that the insert plate 44 of the lock base 1 is tightly pressed against the hardware groove, thereby realizing the fixed connection between the lock base 1 and the profile. At this time, the handle 5 is inserted and installed from the surface of the profile. To further illustrate, the lock base 1 and the cover plate 10 are fixed structures. The pin 4, transmission bar 31, and sliding plate 3 slide linearly in the profile with the rotation of the gear 2.

[0029] The above embodiments are preferred embodiments of this utility model. All structures similar to this utility model and equivalent changes thereof should fall within the protection scope of this utility model.

Claims

1. A bolt lock for doors and windows, characterized in that: The device includes a lock base, a gear component, a sliding plate, a pin, and a handle. The gear component is rotatably mounted within the lock base. The outer curved surface of the gear component has four positioning grooves and multiple protruding teeth arranged in a ring. The lock base has symmetrically arranged positioning beads that abut against the positioning grooves. The positioning beads are elastically connected to the lock base by springs. One end of the sliding plate is provided with a rack that meshes with the protruding teeth, and the other end is connected to the pin. The side of the gear component facing the handle has a recessed polygonal groove. The bottom of the polygonal groove has a connecting hole. The handle has a connecting post that matches the polygonal groove. The connecting post has a first through hole that penetrates the handle. The handle is fixedly connected to the connecting hole by a screw passing through the first through hole.

2. A bolt lock for doors and windows according to claim 1, characterized in that: The lock base includes a face plate, the handle is disposed on the front of the face plate, and the face plate is provided with a second through hole for the connecting post to pass through.

3. A bolt lock for doors and windows according to claim 2, characterized in that: The lock base has two symmetrical grooves inside, and the groove openings correspond to the gear components. The positioning beads and springs are both located in the grooves.

4. A bolt lock for doors and windows according to claim 2, characterized in that: The cover plate is provided with a baffle for positioning the gear component, with the second through hole as the center.

5. A bolt lock for doors and windows according to claim 1, characterized in that: The sliding plate is connected to the pin via a transmission bar.

6. A bolt lock for doors and windows according to claim 5, characterized in that: The lock base, sliding plate, transmission bar, and pin are all provided with protruding insert plates, and the lock base is provided with a set screw.

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