Safety door fence comprising door lock device

Abstract

The utility model belongs to the field of child safety protection products, and particularly relates to a safety door fence comprising a door lock device, the safety door fence comprises a frame, a door leaf and the door lock device installed on the door leaf, and the door lock device comprises a spring bolt assembly and a shell. The door lock device further comprises a button and a push button, the button is an unlocking switch, and the push button is an unlocking switch. A positioning tenon is arranged on the push button, the positioning tenon is clamped in the first positioning mortise when no external force exists, and the push button cannot slide in the unlocking direction; when the button is pressed, the positioning tenon moves into the second positioning mortise, and the push button can slide in the unlocking direction. The door lock device can be opened only by simultaneously pressing the button and sliding the push button. According to the utility model, the unlocking operation is constructed into a fine action which needs to simultaneously apply force in the horizontal direction and the vertical direction, so that infants and pets are prevented from mistakenly touching or imitating sliding unlocking.

Description

Technical Field

[0001] The utility model belongs to the field of children's safety protection products, and particularly relates to a safety gate including a door lock device. Background Art

[0002] In families with infants or pets, in order to restrict the activities of infants or pets to a safe area, safety gates need to be set at aisles, doorways, partitions, etc. In order to effectively play the blocking function, on the one hand, the safety gate should have a firm locked state to prevent it from being opened by infants or pets pushing; on the other hand, an appropriate unlocking method should be set, which should not only prevent infants or pets from unlocking, but also should not cause inconvenience to the entry and exit activities of adults. Chinese Patent CN 218438797 U discloses a safety gate, the door lock device of which includes a locking member and a locking hole member. The locking member is provided with a retractable locking tongue, and the locking member is provided with a first switch and a second switch for jointly controlling the locking tongue. The first switch is a feed switch for controlling the retraction and extension of the locking tongue, and the second switch is a locking switch for controlling the retraction and extension of the locking tongue. This invention controls the door lock through the combined use of two switches to prevent children or pets from accidentally touching the switch and causing the gate to open by mistake; a person can conveniently operate it with one hand, and the force-applying part conforms to the human force-applying habit, which is simple and convenient. Content of the Utility Model

[0003] The utility model provides another safety gate with a firm locked state, and its unlocking action is a fine action that infants and pets cannot complete, but adults can easily do.

[0004] To achieve the above object, the technical solution of the utility model is as follows:

[0005] A door lock device includes a locking tongue assembly and a housing, and is characterized in that the door lock device further includes:

[0006] A button, on which a positioning tenon is provided;

[0007] A first elastic reset assembly, connected to the button;

[0008] A linkage member for pulling the locking tongue assembly to make it retract and extend;

[0009] A sliding groove, the sliding direction corresponding to the sliding groove conforms to the retraction and extension movement direction of the locking tongue assembly, and intersects with the retraction and extension movement direction of the first elastic reset assembly;

[0010] A first positioning mortise, when the positioning tenon is located in the first positioning mortise, a limiting structure for restricting the sliding of the button in the sliding groove is formed;

[0011] A second positioning mortise, when the positioning tenon is in the second positioning mortise, a sliding channel for the button is formed in the sliding groove;

[0012] The positioning tenon sequentially passes through the first positioning mortise and the second positioning mortise along the compression direction of the first elastic reset component.

[0013] Preferably, the first positioning mortise has a position relatively fixed to the housing.

[0014] Preferably, the linkage member has a first end for pulling the lock tongue assembly and a second end for connecting to the second elastic reset component; the second positioning mortise is formed on the linkage member.

[0015] The linkage member is provided with a guiding groove, and the lock tongue assembly includes a guiding block which is engaged in the limiting area of the guiding groove.

[0016] Preferably, the door lock device further includes a push button and a limiting groove, the push button is connected to the linkage member and is engaged in the limiting area of the limiting groove.

[0017] Preferably, the button is nested in the push button.

[0018] Preferably, the lock tongue assembly further includes a lock tongue and a third elastic reset component, one end of the third elastic reset component is connected to the lock tongue, and the other end is connected to a position relatively fixed to the housing; the direction of the guiding groove is the same as the pulling direction of the third elastic reset component on the lock tongue.

[0019] Preferably, the movement of the positioning tenon in the direction of the rebound of the first elastic reset component is limited by the push button.

[0020] Preferably, the lock tongue assembly further includes an inner limiting boss which fits with the inner surface of the linkage member and limits the movement of the lock tongue assembly in the telescopic direction of the first elastic reset component inside the linkage member.

[0021] The present utility model further provides a safety door barrier, including a frame and a door leaf, the door leaf is hinged to the frame, and is characterized in that the door leaf is further installed with a door lock device having any one of the above characteristics.

[0022] The utility model provides two engaging relationships between a positioning tenon and a first positioning mortise, and a positioning tenon and a second positioning mortise in the vertical direction, corresponding to the locked state and the unlocked state respectively. The first elastic reset component applies a continuous thrust to the positioning tenon. Unless there is a continuous external force to resist the thrust, the positioning tenon will be fixed in the first positioning mortise, and the door lock device will spontaneously return to or maintain the locked state, ensuring that the safety railing is normally closed and locked when no one is operating, and effectively playing the blocking function. The utility model provides a segmented transmission relationship between a push button and a linkage member, and a linkage member and a lock tongue assembly in the horizontal direction. A third elastic reset device is arranged in the lock tongue assembly, allowing the lock tongue assembly to have an independent movement track when the linkage member is stationary. With the guiding effect of the guiding slope, the final effect is that when closing the door, only any position of the door leaf needs to be pushed without manual unlocking, and it will not unlock automatically after being locked. On the one hand, the push button constitutes a limiting structure for the positioning tenon in the locked state. On the other hand, through its nesting with the button, the dynamic association of the utility model in the vertical and horizontal directions is realized, and the unlocking operation is constructed as a delicate action that requires simultaneous force in the horizontal and vertical directions, preventing infants and pets from accidentally touching or imitating the sliding unlocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the door lock device of the present utility model;

[0024] Figure 2 is Figure 1 Schematic diagram of the door lock device with the push button hidden on the basis of

[0025] Figure 3 is Figure 2 Schematic diagram of the door lock device with part of the housing hidden on the basis of

[0026] Figure 4 is Figure 2 Schematic diagram of the door lock device with part of the housing and the linkage member hidden on the basis of

[0027] Figure 5 Schematic diagram of the installation of the safety railing of the present utility model.

[0028] LEGEND DESCRIPTION:

[0029] 1. Door lock device; 1.1. Lock tongue hole; 1.2. Guiding slope;

[0030] 2. Frame;

[0031] 3. Door leaf; 3.1. Stopper;

[0032] 4. Housing; 4.1. Limiting groove; 4.2. Sliding groove; 4.3. First positioning mortise;

[0033] 5. Button; 5.1. Positioning tenon; 5.2. First elastic reset component;

[0034] 6. Push button;

[0035] 7. Linkage member; 7.1 Linkage plate; 7.11 Second positioning mortise; 7.12 Guide groove; 7.2 Second elastic reset component;

[0036] 8. Lock tongue assembly; 8.1 Lock tongue; 8.2 Outer limit boss; 8.3 Inner limit boss; 8.4 Guide block; 8.5 Third elastic reset component. Detailed implementation manner

[0037] The following further describes the present utility model in conjunction with the specification drawings and specific embodiments. Those of ordinary skill in the art will be able to implement the present utility model based on these descriptions. In addition, the embodiments of the present utility model involved in the following description are usually only a part of the embodiments of the present utility model, rather than all the embodiments. Therefore, all other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present utility model shall fall within the protection scope of the present utility model. Embodiment

[0038] Please refer to Figure 1 and Figure 2 , the operating parts of the door lock device 1 are a horizontally slidable push button 6 and a pressable button 5. A limit groove 4.1 is provided on the surface of the housing 4, and the sliding distance of the push button 6 is limited in the limit groove 4.1. A chute 4.2 with the same direction is opened inside the limit groove 4.1, and a first positioning mortise 4.3 is provided on the edge of the chute. The button 5 is a cylindrical body that sequentially penetrates the push button 6, the chute 4.2 and the inside of the housing 4 from outside to inside, and a protruding positioning tenon 5.1 is provided on its side wall. When the door lock device 1 is in the locked state, the movement of the positioning tenon 5.1 in the direction of the chute 4.2 is limited by the first positioning mortise 4.3, and the button 5 cannot slide along the direction of the chute 4.2. At this time, when trying to slide the push button 6, since the sliding of the button 5 is blocked, the push button 6 also fails to slide.

[0039] Please refer to Figure 3 , the cylindrical part of the button inside the housing penetrates the linkage plate 7.1 of the linkage member 7, and a second positioning mortise 7.11 is opened at the penetration position. When the button 5 is pressed, the positioning tenon 5.1 breaks away from the restriction of the first positioning mortise 4.3 and enters the second positioning mortise 7.11. At this time, when trying to slide the push button 6, since there is a connection relationship between the push button 6 and the linkage member 7, the push button 6 will drive the button 5 and the linkage member 7 to slide in the same direction together.

[0040] Please refer to Figure 3 and Figure 4, one end of the linkage 7 is connected to the locking tongue assembly 8. Specifically, the linkage 7 is nested with the inner limit boss 8.3, and the linkage plate 7.1 is provided with a guide groove 7.12, and the guide block 8.4 on the surface of the locking tongue is engaged in the guide groove 7.12; the final effect is that the locking tongue 8.1 retracts into the housing 4 as the linkage 7 is pulled. In a more preferred embodiment, the length dimension of the guide block 8.4 in the pulling direction should be greater than its length dimension in other directions. This quantitative relationship can optimize the stress structure of the guide block and prevent the guide block 8.4 from breaking due to the long-term pulling force of the linkage plate 7.1.

[0041] See also Figure 4 , a first elastic reset component 5.2 connected to the button 5 is provided in the pressing direction thereof, and the thrust direction of the first elastic reset component 5.2 on the button 5 is opposite to the pressing direction; a second elastic reset component 7.2 connected to the linkage member 7 is provided in the sliding direction thereof, and the thrust direction of the second elastic reset component 7.2 on the linkage member 7 is opposite to the unlocking sliding direction. Therefore, a continuous external force must be applied for the door lock device to maintain an unlockable state; once the external force is removed, the second elastic reset component 7.2 will immediately push the linkage member 7 to rebound, and the first elastic reset component 5.2 will then push the button, so that the positioning tenon 5.1 returns from the second positioning tenon 7.11 to the first positioning tenon 4.3, and the door lock device 1 returns to the locked state.

[0042] See also Figure 4 The lock tongue 8.1 is located on one side of the housing 4 and is connected to a telescopic end of a third elastic reset assembly 8.5. The other telescopic end of the third elastic reset assembly 8.5 is connected to a relatively fixed position relative to the housing. In this embodiment, the connection position is the vertical rod surface of the door leaf 3. The sliding direction corresponding to the guide groove 7.12 is the same as the contraction direction of the third elastic reset assembly. When the lock tongue 8.1 is pushed into the housing by an external force, the guide block 8.4 also slides back along the guide groove. At this time, the third elastic reset assembly 8.5 is compressed to generate resistance. After the external force is removed, the third elastic reset assembly 8.5 pushes the lock tongue 8.1 out. Due to the blocking of the housing 4 to the external limit boss 8.2, the lock tongue assembly 8 will not be separated from the housing 4.

[0043] See also Figure 5, when used at home, the safety door barrier remains closed most of the time, and the door lock device 1 is in the locked state. When an infant or pet accidentally touches or tries to imitate the sliding door opening action, since the engagement relationship between the positioning tenon 5.1 of the button 5 and the first positioning mortise 4.3 does not change, the push button 6 is limited by the button 5 and cannot slide, and the linkage member 7 connected to the push button 6 cannot pull back the lock tongue assembly 8 either. The correct door opening operation is to slide the push button 6 while pressing the button 5. At this time, the positioning tenon 5.1 is engaged with the second positioning mortise 7.11, and the displacement of the push button 6 is transmitted to the linkage member 7 and the lock tongue assembly 8 through the connection relationship. The lock tongue 8.1 retracts into the housing 4, and the door lock device 1 is successfully unlocked. At this time, the door leaf 3 can be opened forward or backward, and the maximum opening angle is 90°. When closing the door, a force that causes it to rotate and reset can be applied to the door leaf 3 at any position; since the lower edge of the door leaf 3 is provided with a stop block 3.1, the door leaf 3 will be blocked when it rotates to the locked position. The lock tongue 8.1 is gradually pushed back into the housing by the guiding slope 1.2, and the first elastic reset assembly 5.2 contracts accordingly. The guiding block 8.4 slides in the guiding groove 7.12 along the contraction direction of the first elastic reset assembly 5.2. After the lock tongue 8.1 is aligned with the lock tongue hole 1.1, the first elastic reset assembly 5.2 rebounds and pushes the lock tongue 8.1 into the lock tongue hole 1.1, and the door lock device 1 returns to the locked state.

Claims

1. A door lock device, comprising a latch assembly (8) and a housing (4), characterized in that, The door lock device further includes: A button (5) provided with a positioning tenon (5.1); A first elastic reset component (5.2) connected to the button (5); A linkage member (7) for pulling the lock tongue component (8) to make it extend and retract; A chute (4.2), the sliding direction corresponding to the chute (4.2) conforms to the extending and retracting movement direction of the lock tongue component (8), and intersects with the extending and retracting movement direction of the first elastic reset component (5.2); A first positioning mortise (4.3), when the positioning tenon (5.1) is located in the first positioning mortise (4.3), a limiting structure for restricting the sliding of the button (5) in the chute (4.2) is formed; A second positioning mortise (7.11), when the positioning tenon (5.1) is in the second positioning mortise (7.11), a sliding channel for the button (5) is formed in the chute (4.2); The positioning tenon (5.1) sequentially passes through the first positioning mortise (4.3) and the second positioning mortise (7.11) along the compression direction of the first elastic reset component (5.2).

2. The door lock device according to claim 1, characterized in that: The first positioning mortise (4.3) has a position relatively fixed to the housing (4).

3. The door lock device according to claim 1, characterized in that: The linkage member (7) has a first end for pulling the lock tongue component (8) and a second end for connecting the second elastic reset component (7.2); the second positioning mortise (7.11) is opened on the linkage member (7).

4. The door lock device according to claim 3, characterized in that: The linkage member (7) is provided with a guiding groove (7.12), the lock tongue component (8) includes a guiding block (8.4), and the guiding block (8.4) is engaged in the limiting area of the guiding groove (7.12).

5. The door lock device according to claim 3, characterized in that: The door lock device (1) further includes a push button (6) and a limiting groove (4.1), the push button (6) is connected to the linkage member (7) and is engaged in the limiting area of the limiting groove (4.1).

6. The door lock device according to claim 5, characterized in that: The button (5) is nested in the push button (6).

7. The door lock device according to claim 4, characterized in that: The lock tongue component (8) further includes a lock tongue (8.1) and a third elastic reset component (8.5), one end of the third elastic reset component (8.5) is connected to the lock tongue (8.1), and the other end is connected to a position relatively fixed to the housing (4); the direction of the guiding groove (7.12) is the same as the pulling direction of the third elastic reset component (8.5) on the lock tongue (8.1).

8. The door lock device according to claim 5, characterized in that: When the positioning tenon (5.1) is located in the first positioning mortise (4.3), the push button (6) limits the movement of the positioning tenon (5.1) in the rebounding direction of the first elastic reset component (5.2).

9. The door lock device according to claim 1, characterized in that: The locking tongue assembly (8) further includes an inner limiting boss (8.3), the inner limiting boss (8.3) is attached to the inner surface of the linkage member (7), and limits the movement of the locking tongue assembly (8) in the telescopic direction of the first elastic reset assembly (5.2) within the linkage member (7).

10. A safety railing, comprising a frame (2) and a door leaf (3), wherein the door leaf (3) is hinged to the frame (2), characterized in that, The door leaf (3) is further provided with the door lock device according to any one of claims 1 to 9.

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