Blind bolt for plastic steel door

Abstract

The utility model relates to the field of blind bolts, and discloses a blind bolt for a plastic-steel door, which comprises a blind bolt body and a spring bolt, and a driving part for driving the spring bolt to stretch in the blind bolt body is arranged between the blind bolt body and the spring bolt. The driving part comprises a sliding plate which is arranged in the blind bolt body in a sliding manner and drives the spring bolt to partially extend out of the blind bolt body or retract into the blind bolt body when moving; one end of the bolt body is hinged to the bolt body, and when the bolt body rotates to a first position, the bolt body drives the spring bolt to partially extend out of the bolt body; when the rotating plate rotates to the first position, the sliding plate drives the spring bolt to retract towards the interior of the blind bolt body, and when the rotating plate rotates to the second position, the limiting component limits the rotating plate to rotate in the blind bolt body. The spring bolt can stretch out and draw back in the blind bolt body by sliding the sliding plate in the blind bolt body. And the probability of deformation of the spring bolt during stretching is reduced, so that the service life of the blind bolt is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of concealed latches, and more particularly to a concealed latch for PVC doors. Background Technology

[0002] Chinese Patent No. CN214170252U discloses a concealed latch, including a housing and a latch rod. The latch rod extends or retracts from the housing. The housing includes a front panel and a bottom plate. The front panel has a first groove in the middle, which penetrates the front panel. The bottom of the front panel overlaps with the first groove. The bottom plate is connected to the front panel via a connecting plate. One end of the latch rod has lugs on both sides. The bottom plate has a second groove, and the edge of the second groove has several latching devices. The lugs match the latching devices. A button and a connecting rod are arranged in the space enclosed by the connecting plate, the first groove, and the bottom plate. One end of the connecting rod is connected to the button, and the other end is connected to the lug end on the latch rod. The latching device includes several notches formed in the second groove for the lugs to be inserted.

[0003] In the above structure, when the plug needs to extend or retract into the box, the button can be pressed first to deform the plug by pressing the button. When the plug is deformed, the lug at one end of the plug will come out of the notch. Then, sliding the button in the first groove can drive the plug to extend or retract into the box. However, after long-term use, the plug will gradually bend due to the pressure of the button, which will gradually reduce the limiting effect of the lug at one end of the plug on the plug, thus affecting the service life of the concealed plug. Utility Model Content

[0004] This invention addresses the drawback of existing concealed bolts, which gradually bend due to pressure from buttons after prolonged use, thus reducing the limiting effect of the lug and notch at one end of the bolt and affecting its service life. It provides a concealed bolt for PVC doors that can improve the service life of concealed bolts.

[0005] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0006] A concealed bolt for PVC doors includes a concealed bolt body and a latch tongue telescopically disposed within the concealed bolt body. A driving component is disposed between the concealed bolt body and the latch tongue to drive the latch tongue to extend and retract within the concealed bolt body. The driving component includes a sliding plate that slides within the concealed bolt body, causing the latch tongue to partially extend out of the concealed bolt body or retract into the concealed bolt body when it moves. The concealed bolt body is provided with a rotating plate, one end of which is hinged to the concealed bolt body and drives the latch tongue to remain partially extended out of the concealed bolt body when it rotates to a first position, and allows the sliding plate to drive the latch tongue to retract into the concealed bolt body when it rotates to a second position. A limiting component restricts the rotation of the rotating plate within the concealed bolt body when the rotating plate rotates to the first position.

[0007] Using the above solution, the sliding plate installed inside the concealed bolt body can drive the bolt to extend and retract within the concealed bolt body during movement. The rotating plate, when rotated to the first position, restricts the sliding plate's movement within the concealed bolt body, thus keeping the bolt partially extended outside the concealed bolt body. When the rotating plate rotates to the second position, the sliding plate can slide within the concealed bolt body. The movement of the sliding plate within the concealed bolt body drives the bolt to extend and retract within the concealed bolt body, making the concealed bolt more convenient to use. Simultaneously, pushing and pulling the sliding plate within the concealed bolt body enables the bolt to extend and retract within the concealed bolt body, reducing the probability of bending and deformation of the bolt during extension and retraction, thereby increasing the service life of the concealed bolt.

[0008] Preferably, the limiting component includes an insertion hole provided on the sliding plate, a through hole provided on the rotating plate that is directly opposite the insertion hole when the rotating plate is rotated to the first position, and a pin that restricts the rotation of the rotating plate within the concealed pin body after being inserted through the through hole into the insertion hole.

[0009] Using the above scheme, the set pin can be inserted into the through hole on the rotating plate and the insertion hole on the sliding plate when the rotating plate is rotated to the first position. At this time, the pin will limit the rotation of the rotating plate. When the rotating plate is limited to the first position, the sliding plate cannot move in the concealed pin body. At this time, the locking tongue remains partially extended outside the concealed pin body.

[0010] Preferably, a positioning component is provided between the rotating plate and the concealed pin body to position the rotating plate when it is in its first position, so that the operator can insert the pin into the through hole and the insertion hole.

[0011] Preferably, the positioning component includes a receiving groove on the concealed pin body, a steel ball telescopically disposed in the receiving groove, a resetting component disposed between the receiving groove and the steel ball, which drives the steel ball to partially extend out of the receiving groove after the steel ball retracts into the receiving groove, and a positioning groove on the rotating plate for partial insertion of the steel ball.

[0012] Using the above solution, the steel ball telescopically installed in the storage slot can be inserted into the positioning slot on the rotating plate when the rotating plate rotates to the first position. At this time, the through hole on the rotating plate will be aligned with the insertion hole on the sliding plate, which makes it easy for the operator to insert the pin to limit the rotation of the rotating plate and keep the latch partially extended into the concealed pin body.

[0013] Preferably, the reset component includes a reset spring disposed between the receiving groove and the steel ball, with both ends of the reset spring abutting against the surface of the receiving groove and the surface of the steel ball, respectively.

[0014] Using the above solution, the reset spring set between the storage slot and the steel ball can drive the steel ball, which has retracted into the storage slot, to extend out of the storage slot, thereby inserting the steel ball into the positioning slot on the rotating plate, positioning the rotating plate, and making it convenient for the operator to insert the pin into the through hole and the insertion hole.

[0015] Preferably, a linkage component is provided between the rotating plate and the sliding plate to drive the sliding plate to slide within the concealed pin body when the rotating plate rotates.

[0016] Preferably, the linkage component includes a linkage shaft protruding from one end of the sliding plate near the rotating plate and an oblong groove provided on the rotating plate for the linkage shaft to be inserted into and for the linkage shaft to slide in when the rotating plate rotates.

[0017] With the above solution, the linkage shaft set on the sliding plate can move in the medicated groove when the rotating plate rotates, thereby causing the linkage shaft to drive the sliding plate to slide on the concealed pin body, realizing the extension and retraction of the lock tongue. The linkage shaft causes the rotating plate to rotate, which in turn drives the sliding plate to move, making the movement of the sliding plate more convenient.

[0018] This utility model, by adopting the above technical solution, has significant technical effects: the sliding plate set inside the concealed bolt body can drive the bolt tongue to extend and retract within the concealed bolt body during movement; the rotating plate, when rotated to the first position, restricts the movement of the sliding plate within the concealed bolt body, thus keeping the bolt tongue partially extended outside the concealed bolt body; when the rotating plate rotates to the second position, the sliding plate can slide within the concealed bolt body. The movement of the sliding plate within the concealed bolt body drives the bolt tongue to extend and retract within the concealed bolt body, making the concealed bolt more convenient to use. At the same time, pushing and pulling the sliding plate within the concealed bolt body enables the bolt tongue to extend and retract within the concealed bolt body, reducing the probability of bending and deformation of the bolt tongue during extension and retraction, thereby improving the service life of the concealed bolt. Attached Figure Description

[0019] Figure 1 This is an isometric view of the latch extending out of the body of the concealed pin in this embodiment;

[0020] Figure 2This is an isometric view of the latch retracting into the concealed pin body in this embodiment;

[0021] Figure 3 This is an isometric view of the latch and drive component in this embodiment;

[0022] Figure 4 This is an isometric view of the sliding plate in this embodiment;

[0023] Figure 5 This is an isometric view of the concealed pin body in this embodiment;

[0024] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0025] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Concealed pin body; 2. Lock tongue; 3. Sliding plate; 4. Rotating plate; 5. Connecting plate; 6. Insertion hole; 7. Through hole; 8. Pin; 9. Storage slot; 10. Steel ball; 11. Positioning slot; 12. Return spring; 13. Linkage shaft; 14. Waist-shaped slot. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0027] Example

[0028] A concealed bolt for a PVC door, reference Figures 1-3 The device includes a concealed bolt body 1 and a latch 2 telescopically disposed within the concealed bolt body 1. A driving component is provided between the concealed bolt body 1 and the latch 2 to drive the latch 2 to extend and retract within the concealed bolt body 1. The driving component includes a sliding plate 3 that slides within the concealed bolt body 1, which, when moved, causes the latch 2 to partially extend outside the concealed bolt body 1 or retract inside the concealed bolt body 1. In this embodiment, a connecting plate 5 is provided between the sliding plate 3 and the latch 2. The two ends of the connecting plate are respectively connected to the sliding plate 3 and the latch 2, and the connecting plate 5 can move with the sliding plate 3. The concealed bolt body 1 is provided with a rotating plate 4, one end of which is hinged to the concealed bolt body 1 and drives the latch 2 to remain partially extended outside the concealed bolt body 1 when it rotates to the first position, and allows the sliding plate 3 to drive the latch 2 to retract into the concealed bolt body 1 when it rotates to the second position. A limiting component restricts the rotation of the rotating plate 4 within the concealed bolt body 1 when the rotating plate 4 rotates to the first position.

[0029] refer to Figures 1-6The limiting components include an insertion hole 6 on the sliding plate 3, a through hole 7 on the rotating plate 4 that is directly opposite the insertion hole 6 when the rotating plate 4 rotates to the first position, and a pin 8 that, after passing through the through hole 7 and being inserted into the insertion hole 6, restricts the rotation of the rotating plate 4 within the concealed pin body 1. A positioning component is provided between the rotating plate 4 and the concealed pin body 1 to position the rotating plate 4 when it rotates to the first position, facilitating subsequent insertion of the pin 8 into the through hole 7 and the insertion hole 6 by the operator. The positioning component includes the concealed pin. The main body 1 has a storage groove 9, a steel ball 10 that is telescopically disposed in the storage groove 9, a reset component disposed between the storage groove 9 and the steel ball 10 that drives the steel ball 10 to partially extend out of the storage groove 9 after it retracts into the storage groove 9, and a positioning groove 11 disposed on the rotating plate 4 for partial insertion of the steel ball 10. The reset component includes a reset spring 12 disposed between the storage groove 9 and the steel ball 10, with both ends of the reset spring 12 abutting against the surfaces of the storage groove 9 and the steel ball 10, respectively.

[0030] refer to Figures 1-2 A linkage component is provided between the rotating plate 4 and the sliding plate 3, which drives the sliding plate 3 to slide within the concealed pin body 1 when the rotating plate 4 rotates. The linkage component includes a linkage shaft 13 protruding from one end of the sliding plate 3 near the rotating plate 4 and an oblong groove 14 provided on the rotating plate 4 for the linkage shaft 13 to be inserted and for the linkage shaft 13 to slide within it when the rotating plate 4 rotates.

[0031] In this embodiment, the first position refers to the position of the rotating plate 4 when the linkage shaft 13 is located in the waist-shaped groove 14 near one end of the latch 2; the second position refers to the position of the rotating plate 4 when the linkage shaft 13 is located in the waist-shaped groove 14 away from one end of the latch 2.

[0032] The specific extension and retraction process of the latch 2 is as follows: When the latch 2 retracts into the concealed pin body 1, firstly, the pin 8 is pulled out from the through hole 7 and the insertion hole 6. Then, the rotating plate 4 is rotated, causing the linkage shaft 13 on the sliding plate 3 to move away from the latch 2 within the waist-shaped groove 14 on the rotating plate 4. At this time, the sliding plate 3 will move horizontally within the concealed pin body 1 in a direction away from the latch 2. When the sliding plate 3 moves, it will drive the latch 2 to retract into the concealed pin body 1 through the connecting plate 5. When the latch 2 needs to extend outward from the concealed pin body 1, firstly, the rotating plate 4 is rotated to the first position. At this time, the linkage shaft 13 on the sliding plate 3 will move towards the latch 2 within the waist-shaped groove 14 on the rotating plate 4. The direction moves horizontally. When the sliding plate 3 moves, it will drive the locking tongue 2 to extend outward to the concealed pin body 1 through the connecting plate 5. When the rotating plate 4 rotates to the first position, the steel ball 10 set in the storage groove 9 will extend outward to the storage groove 9 under the action of the return spring 12. At this time, the steel ball 10 will be partially inserted into the positioning groove 11 on the rotating plate 4, thereby limiting the position of the rotating plate 4. Finally, the pin 8 is inserted into the through hole 7 on the rotating plate 4 and the insertion hole 6 on the sliding plate 3 to restrict the rotation of the rotating plate 4 in the concealed pin body 1. At the same time, when the rotating plate 4 is limited by the pin after rotating to the first position, the rotating plate 4 will restrict the sliding plate 3 from sliding in the concealed pin body 1. At this time, the locking tongue 2 will remain partially extended outward to the concealed pin body 1.

[0033] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A concealed bolt for a PVC door, comprising a concealed bolt body (1) and a latch (2) telescopically disposed within the concealed bolt body (1), wherein a driving component for driving the latch (2) to telescopically extend and retract within the concealed bolt body (1) is provided between the concealed bolt body (1) and the latch (2), characterized in that: The driving component includes a sliding plate (3) that slides within the concealed pin body (1) and drives the latch (2) to partially extend out of the concealed pin body (1) or retract into the concealed pin body (1) when it moves. The concealed pin body (1) is provided with a rotating plate (4) that is hinged to the concealed pin body (1) at one end and drives the latch (2) to remain partially extended out of the concealed pin body (1) when it rotates to the first position, and allows the sliding plate (3) to drive the latch (2) to retract into the concealed pin body (1) when it rotates to the second position. The rotating plate (4) is also a limiting component that restricts the rotation of the rotating plate (4) within the concealed pin body (1) when it rotates to the first position.

2. A concealed mortise lock for plastic doors according to claim 1, characterized in that: The limiting component includes a socket (6) provided on the sliding plate (3), a through hole (7) provided on the rotating plate (4) that is directly opposite the socket (6) when the rotating plate (4) is rotated to the first position, and a pin (8) that restricts the rotation of the rotating plate (4) within the concealed pin body (1) after being inserted through the through hole (7) into the socket (6).

3. A concealed mortise lock for plastic steel doors according to claim 2, characterized in that: A positioning component is provided between the rotating plate (4) and the concealed pin body (1) to position the rotating plate (4) when it is in its first position, so that the operator can insert the pin (8) into the through hole (7) and the insertion hole (6).

4. A concealed mortise lock for plastic steel doors according to claim 3, characterized in that: The positioning component includes a receiving groove (9) provided on the concealed pin body (1), a steel ball (10) telescopically provided in the receiving groove (9), a resetting component provided between the receiving groove (9) and the steel ball (10) to partially extend out of the receiving groove (9) after the steel ball (10) retracts into the receiving groove (9), and a positioning groove (11) provided on the rotating plate (4) for partial insertion of the steel ball (10).

5. A concealed mortise lock for plastic steel doors according to claim 4, characterized in that: The reset component includes a reset spring (12) disposed between the receiving groove (9) and the steel ball (10), with the two ends of the reset spring (12) abutting against the surfaces of the receiving groove (9) and the steel ball (10), respectively.

6. A concealed mortise lock for plastic steel doors as defined in claim 1, wherein: A linkage component is provided between the rotating plate (4) and the sliding plate (3) to drive the sliding plate (3) to slide within the concealed pin body (1) when the rotating plate (4) rotates.

7. A concealed mortise lock for plastic steel doors according to claim 6, characterized in that: The linkage component includes a linkage shaft (13) protruding from one end of the sliding plate (3) near the rotating plate (4) and an oblong groove (14) provided on the rotating plate (4) for the linkage shaft (13) to be inserted and for the linkage shaft (13) to slide in when the rotating plate (4) rotates.

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