Door lock with strong suction feeling

Abstract

The door lock with strong suction feeling comprises a shell, a locking body, a lock hole on the shell, the locking body rotatably arranged in the shell, a clamping groove in the shell, the clamping groove arranged along the direction of the door hook insertion, a supporting shaft on the locking body, the two ends of the supporting shaft matched with the torsional spring, the locking body movably installed on the clamping groove through the supporting shaft, an operating hook on the locking body, and a step body extending towards the side of the lock hole in the shell. When the door hook is inserted into the lock hole, the locking body is driven to rotate, the step body provides a counterforce opposite to the insertion direction of the door hook for the locking body, until the operating hook is separated from the counterforce of the step body, at this time, the locking body moves along the clamping groove towards the insertion direction of the door hook under the action of the torsional spring, and the door locking is completed. The door lock device has small door closing force, large door opening force, large inward stroke during door closing, obvious suction feeling, and better door closing hand feeling.

Description

[Technical Field]

[0001] This invention relates to the technical field of door locks, and in particular to a door lock with a strong suction sensation. [Background Technology]

[0002] Currently, the doors of most household appliances are equipped with door locks, which are activated by a torsion spring mechanism. (See [link / reference]). Figure 1 When closing the door, locking body 2 rotates against the torsion spring force. After rotating to the turning point, the torsion spring force flips, assisting in closing the door. When opening the door, locking body rotates against the torsion spring 3. After rotating to the turning point, the torsion spring force flips, assisting in opening the door. The locking body's axis is fixed to the torsion spring fulcrum A. When torsion spring fulcrum A, torsion spring fulcrum B, and the fixed position of the torsion spring are aligned, the distance between the two lever arms of torsion spring 3 is minimal. When rotating to both sides, the distance between the lever arms of torsion spring 3 increases. When closing the door inwards, it assists in closing after passing the turning point; when opening the door outwards, it assists in opening after passing the turning point.

[0003] The above-mentioned door lock device has the following problems when used in a clothes dryer:

[0004] 1. The door has a strong closing force, and the closing feel is not good.

[0005] 2. After the flip point, the door hook travels inward relatively little, and the suction sensation is not obvious.

[0006] 3. When opening the door, the door opening flip point has a short travel distance. When the clothes are drying, the expansion and twisting may exert force on the door cover, causing the door cover to open a certain distance. At this time, the door lock may have already flipped open the door, thus interrupting the process. [Summary of the Invention]

[0007] The purpose of this invention is to solve the problems in the prior art and to propose a door lock with a strong suction sensation, which provides a noticeable suction sensation when closing the door and a better feel when closing the door.

[0008] To achieve the above objectives, this invention proposes a door lock with a strong suction feel. The door lock includes a housing and a locking body. The housing has a lock hole into which a door hook on a door cover can be inserted. The locking body is rotatably disposed within the housing. A slot is provided within the housing, aligned with the direction of door hook insertion. A support shaft is provided on the locking body. The door lock also includes a torsion spring. Both ends of the support shaft cooperate with the torsion spring. The locking body is movably mounted on the slot via the support shaft. An operating hook is provided on the locking body. A step extending towards the lock hole is provided within the housing. When the door hook is inserted into the lock hole, it drives the locking body to rotate. The step body provides a resisting force to the locking body in the opposite direction to the insertion direction of the door hook, until the operating hook disengages from the resisting force of the step body. At this time, the locking body moves along the slot towards the insertion direction of the door hook under the action of the torsion spring, completing the door closing and locking action. When the door hook is pulled out of the lock hole, the step body provides a force to the locking body to prevent it from rotating back to its original position. The locking body moves towards the door hook pulling direction under the action of the door hook, until the operating hook disengages from the step body. The locking body rotates back to its original position under the action of the torsion spring, completing the door opening action.

[0009] Preferably, the operating hook has a C-shaped structure and an arc surface on its outer wall. When the door hook is inserted into the lock hole, the step body abuts against the arc surface, providing a resisting force to the locking body that is opposite to the direction of the door hook insertion.

[0010] Preferably, the torsion spring includes a first torsion spring arm and a second torsion spring arm symmetrically arranged on both sides of the first torsion spring arm. The first torsion spring arm is fixed in a positioning groove inside the housing, and the second torsion spring arm is movably connected to the support shafts on both sides of the locking body and can move within the slot.

[0011] Preferably, the locking body has a locking hook on one side facing the keyhole and an operating hook on the other side. The locking hook is C-shaped, with a locking tongue at one end and a crank at the other end. When the door hook is inserted into the keyhole, the locking body is rotated by the crank until the step body disengages from the operating hook. At this time, the locking tongue of the locking body presses against the lock head, and the locking body moves along the insertion direction of the door hook under the action of the torsion spring, thus completing the door closing and locking.

[0012] Preferably, the housing includes an upper housing and a lower housing. The upper housing has a lock hole, and the lower housing has a stepped body extending toward the side where the lock hole is located, as well as a positioning groove for fixing the torsion spring. The two sides inside the lower housing also have slots for installing the support shaft.

[0013] The beneficial effects of this invention are:

[0014] 1. The closing force is small, and the opening force is large (to prevent the door from being pushed open during operation).

[0015] 2. The inhalation depth is relatively large, resulting in a noticeable inhalation sensation.

[0016] 3. The door opening distance is large. When the dryer is working, the expansion and twisting of the clothes during drying may exert force on the door cover, causing the door cover to open a certain distance. At this time, the door lock is not fully open. When the dryer rotates again, the clothes are pulled back in, and the door cover returns to its original position under the force of the door lock.

[0017] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. [Attached Image Description]

[0018] Figure 1 This is a schematic diagram of the internal structure of an existing door lock device;

[0019] Figure 2 This is a right view of the internal structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the present invention in the first state of door hook insertion;

[0021] Figure 4 This is a schematic diagram of the internal structure of the present invention in the second state of door hook insertion;

[0022] Figure 5 This is a schematic diagram of the internal structure of the present invention in the locked state with the door hook fully inserted;

[0023] Figure 6 This is a schematic diagram of the internal structure of the present invention when the door hook is pulled out.

[0024] Figure 7 This is a schematic diagram of the internal structure of the present invention in the second state of the door hook being pulled out;

[0025] Figure 8 This is a schematic diagram of the locking body structure of the present invention;

[0026] Figure 9 This is a schematic diagram of the torsion spring of the present invention.

Detailed Implementation Methods

[0027] See Figures 2 to 7 This invention discloses a door lock with a strong suction sensation. The door lock includes a housing 1 and a locking body 2. The housing 1 has a lock hole 10 for a door hook 100 on a door cover to be inserted. The locking body 2 is rotatably disposed inside the housing 1. The housing 1 has a slot 14 disposed in the direction of insertion of the door hook 100. The locking body 2 has a support shaft 4. The door lock also includes a torsion spring 3. The two ends of the support shaft 4 cooperate with the torsion spring 3. The locking body 2 is movably mounted on the slot 14 through the support shaft 4. The locking body 2 has an operating hook 21. The housing 1 has a stepped body 13 extending toward the side where the lock hole 10 is located.

[0028] When the door hook 100 is inserted into the lock hole 10, it drives the locking body 2 to rotate. The step body 13 provides a resistance force to the locking body 2 that is opposite to the insertion direction of the door hook 100 until the operating hook 21 disengages from the resistance force of the step body 13. At this time, the locking body 2 moves along the slot 14 toward the insertion direction of the door hook 100 under the action of the torsion spring 3, thus completing the door closing and locking.

[0029] When the door hook 100 is pulled out of the lock hole 10, the stepped side 131 on one side of the step body 13 provides a force to the locking body 2 to prevent it from rotating back to its original position. Under the action of the door hook 100, the locking body 2 moves in the direction of pulling out the door hook 100 until the end of the operating hook 21 is disengaged from the stepped side 131 of the step body 13. Under the action of the torsion spring 3, the locking body 2 rotates back to its original position, completing the door opening action.

[0030] Further, see Figure 3 , Figure 4 , Figure 5 , Figure 8 The operating hook 21 has a C-shaped structure and an arc surface 211 on its outer wall. When the door hook 100 is inserted into the lock hole 10, the step body 13 abuts against the arc surface 211, providing a resisting force to the locking body 2 opposite to the insertion direction of the door hook 100, so as to prevent the locking body 2 from moving along the slot 14 toward the side where the step body 13 is located, until the locking body 2 rotates and the step body 13 disengages from the arc surface 211, and the end of the operating hook 21 abuts against the stepped side 131 of the step body 13. At this time, the locking body 2 moves toward the insertion direction of the door hook 100 under the action of the torsion spring 3, assisting in closing and locking the door.

[0031] Further, see Figure 9 The torsion spring 3 includes a first torsion spring arm 31 and a second torsion spring arm 32 symmetrically arranged on both sides of the first torsion spring arm 31. The first torsion spring arm 31 is fixed in the positioning groove 15 inside the housing 1. The second torsion spring arm 32 is movably connected to the support shafts 4 on both sides of the locking body 2 and can move in the slot 14.

[0032] Further, see Figure 3 , Figure 4 , Figure 5 , Figure 8 The locking body 2 has a locking hook on one side facing the lock hole 10 and an operating hook 21 on the other side. The locking hook is C-shaped, with a locking tongue 22 at one end and a crank 23 at the other end. When the door hook 100 is inserted into the lock hole 10, the locking body 2 is rotated by the crank 23 until the step body 13 disengages from the operating hook 21. At this time, the locking tongue 22 of the locking body 2 presses against the lock head 100, and the locking body 2 moves along the insertion direction of the door hook 100 under the action of the torsion spring 3 to complete the door closing and locking.

[0033] Further, see Figures 2 to 7 The housing 1 includes an upper housing 11 and a lower housing 12. The upper housing 11 has a lock hole 10. The lower housing 12 has a step body 13 extending toward the side where the lock hole 10 is located, and a positioning groove 15 for fixing the torsion spring 3. The two sides inside the lower housing 12 also have slots 14 for installing the support shaft 4.

[0034] The working process of this invention:

[0035] See Figure 3 After the door hook 100 is inserted, the locking body 2 rotates until the arc surface 211 of the locking body 3 slides out from the stepped body 13 of the lower housing 12. Figure 4 In this state, the resistance of the step body 13 to the locking body 2 disappears, and the locking body 2 moves to the right under the action of the torsion spring 3, pulling the door hook 100. The operating hook 21 of the locking body 2 slides on the step side 131 of the step body 13 until it moves to the desired position. Figure 5 To lock the door, go to the indicated lock position.

[0036] participate Figure 6 When the door hook 100 is pulled, causing the locking body 2 to move to the left, the locking body 2 experiences a clockwise rotational force. The operating hook 21 of the locking body 2 rests on the side 131 of the step body 13, preventing rotation and thus allowing the locking body 2 to move only to the left until the operating hook 21 leaves the side 131 of the step. Figure 6 As shown, the door hook 100 continues to move to the left. (See reference...) Figure 7 The locking body 2 rotates in the opposite direction to reset under the action of the torsion spring 3, the locking hook 22 disengages from the door hook 100, and the operating hook 21 presses against the step body 13, so that the locking body 2 and the support shaft 4 remain in the open state.

[0037] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A door lock with a strong suction feel, the door lock comprising a housing (1) and a locking body (2), the housing (1) having a lock hole (10) into which a door hook (100) on a door cover can be inserted, the locking body (2) being rotatably disposed within the housing (1), characterized in that: The housing (1) is provided with a slot (14) which is arranged along the direction of insertion of the door hook (100). The locking body (2) is provided with a support shaft (4). The door lock also includes a torsion spring (3). The two ends of the support shaft (4) cooperate with the torsion spring (3). The locking body (2) is movably installed on the slot (14) through the support shaft (4). The locking body (2) is provided with an operating hook (21). The housing (1) is provided with a stepped body (13) extending toward the side where the lock hole (10) is located. The torsion spring (3) includes a first torsion spring arm (31) and a second torsion spring arm symmetrically arranged on both sides of the first torsion spring arm (31). The first torsion spring arm (31) is fixed in the positioning groove (15) inside the housing (1), and the second torsion spring arm (32) is movably connected to the support shafts (4) on both sides of the locking body (2) and can move in the slot (14); the housing (1) includes an upper housing (11) and a lower housing (12), the upper housing (11) is provided with a lock hole (10), the lower housing (12) is provided with a step body (13) extending toward the side where the lock hole (10) is located, and a positioning groove (15) for fixing the torsion spring (3), and slots (14) for installing the support shaft (4) are also provided on both sides inside the lower housing (12). When the door hook (100) is inserted into the lock hole (10), the locking body (2) is driven to rotate. The step body (13) provides a resistance force to the locking body (2) in the opposite direction to the insertion direction of the door hook (100) until the operating hook (21) is disengaged from the resistance force of the step body (13). At this time, the locking body (2) moves along the slot (14) towards the insertion direction of the door hook (100) under the action of the torsion spring (3) to complete the door closing and locking. When the door hook (100) is pulled out of the lock hole (10), the step body (13) provides a force to the locking body (2) to prevent it from rotating back to its original position. Under the action of the door hook (100), the locking body (2) moves in the direction of pulling out the door hook (100) until the operating hook (21) is dislodged from the step body (13). Under the action of the torsion spring (3), the locking body (2) rotates back to its original position, completing the door opening action.

2. A door lock with a strong suction sensation as described in claim 1, characterized in that: The operating hook (21) has a C-shaped structure and an arc surface (211) on its outer wall. When the door hook (100) is inserted into the lock hole (10), the step body (13) abuts against the arc surface (211) to provide the locking body (2) with a resisting force opposite to the insertion direction of the door hook (100).

3. A door lock with a strong suction sensation as described in claim 1, characterized in that: The locking body (2) has a locking hook on one side facing the lock hole (10) and an operating hook (21) on the other side. The locking hook is C-shaped, with a locking tongue (22) at one end and a crank (23) at the other end. When the door hook (100) is inserted into the lock hole (10), the locking body (2) is rotated by the crank (23) until the step body (13) disengages from the operating hook (21). At this time, the locking tongue (22) of the locking body (2) presses against the door hook (100), and the locking body (2) moves along the insertion direction of the door hook (100) under the action of the torsion spring (3) to complete the door closing and locking.

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