Door lock durability test tool

Abstract

The utility model discloses a door lock durability test tool, a door lock (10) is provided with a push rod (101) and a lock catch (102), and the door lock durability test tool is characterized in that the door lock durability test tool comprises a base (1) used for placing the door lock (10); the rotating arm (2) is hinged to the base (1) and can rotate from a first position to a second position under the thrust action of a push rod (101) of the door lock (10); the lock hook (3) is installed on the rotating arm (2) and used for being matched with a lock catch (102) of the door lock (10) in a locking mode; and the driving piece (4) is used for driving the rotating arm (2) to rotate from the second position to the first position. Compared with the prior art, the door lock durability test tool is simple in structure.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a door lock durability testing fixture. Background Technology

[0002] With the continuous development of dishwashers, the lifespan requirements for push-rod door locks, as key components of dishwashers, are becoming increasingly stringent. As one of the important assessment items for door locks, the standardization of their testing conditions is becoming increasingly important.

[0003] For example, Chinese patent application CN 202021670568.1, entitled "A Durability Testing Fixture for an Integrated Cooktop Electromagnetic Door Lock," discloses a durability testing fixture for an integrated cooktop electromagnetic door lock. This fixture includes a fixed base, an electromagnetic lock fixing mechanism, a telescopic mechanism, a geared motor, and a mechanical counter. The electromagnetic lock fixing mechanism, telescopic mechanism, geared motor, and mechanical counter are all fixed to the fixed base. The telescopic mechanism includes a bearing, a bushing, and a push rod. The bearing is connected to the fixed base, and the bushing is fitted onto the push rod, with a slidable connection between the bushing and the bearing. One end of the push rod is connected to the geared motor, and the other end has a connecting block with a latch. The other end of the push rod is connected to the mechanical counter's swing arm, and the electromagnetic lock fixing mechanism is located at the other end of the push rod. The telescopic mechanism is divided into three parts: the bearing, the bushing, and the push rod. The bearing serves a fixing function, the push rod serves a transmission function, and the bushing, as a consumable part, connects the two. Using a bushing has the advantages of easy replacement and low replacement cost.

[0004] However, the aforementioned door lock durability testing fixtures have several drawbacks. Firstly, they consist of many components and have a complex structure. Secondly, they can only meet the requirements of conventional lifespan testing and verify the opening and closing lifespan of the lock cylinder. They cannot take into account the effects of door weight and moisture erosion during actual use, and therefore cannot better test the durability of the door lock when used by the user. Utility Model Content

[0005] The first technical problem to be solved by this utility model is to provide a door lock durability testing fixture with a simple structure, in view of the current state of the technology.

[0006] The second technical problem to be solved by this utility model is to provide a door lock durability testing fixture that can truly reflect the durability performance of the door lock during use.

[0007] The technical solution adopted by this utility model to solve the first technical problem mentioned above is: a door lock durability testing fixture, wherein the door lock has a push rod and a latch, characterized in that: the door lock durability testing fixture includes...

[0008] A base for placing the aforementioned door lock;

[0009] The rotating arm, hinged to the base, can rotate from the first position to the second position under the pushing force of the door lock's push rod.

[0010] A locking hook, mounted on the rotating arm, is used to engage with the latch of the door lock for locking; and

[0011] A driving component is used to drive the rotating arm to rotate from the second position to the first position;

[0012] When the rotating arm is in the first position, the push rod retracts inward, and the locking hook engages with the locking buckle.

[0013] With the rotating arm in the second position, the push rod extends outward, and the locking hook and the latch are released from locking.

[0014] In order to enable the driving component to drive the rotating arm, a connecting rod is rotatably connected to the free end of the rotating arm. The driving component is a cylinder with a telescopic pull rod, which is driven by the connecting rod.

[0015] To save effort, the locking hook is located between the free end and the fixed end of the rotating arm.

[0016] In order to achieve the hinge connection of the rotating arm on the base, the rear part of the top side of the base has a hinge seat, and the rear end of the rotating arm is hinged to the hinge seat by a pivot.

[0017] To facilitate the positioning of the door lock under test, the base has a positioning seat for fixing the door lock.

[0018] To facilitate the movement of the tooling and improve portability, the bottom of the base is equipped with multiple spaced casters.

[0019] To facilitate operation of the rotating arm, a handle is provided at the free end of the rotating arm.

[0020] To improve testing efficiency, the number of rotating arms is at least two, and they are arranged at intervals on the base.

[0021] The technical solution adopted by this utility model to solve the second technical problem mentioned above includes at least one of the following two solutions:

[0022] Option 1: It also includes a counterweight block corresponding to the rotating arm, wherein the rotating arm is installed on the top of the base, and the counterweight block is installed on the corresponding rotating arm.

[0023] Option 2: It also includes a water storage box corresponding to the door lock, with the outlet at the bottom of the water storage box facing the corresponding door lock.

[0024] Compared with the prior art, the advantages of this utility model are:

[0025] (1) A door lock durability testing fixture is formed by a base, a rotating arm, a lock hook and a driving component. When the rotating arm is in the first position, the door lock push rod retracts and the lock hook locks with the door lock latch. When the rotating arm is in the second position, the door lock push rod extends and the lock hook unlocks from the door lock latch. The door lock durability can be tested by performing a reciprocating opening and closing action on the door lock. The door lock durability testing fixture has a simple structure.

[0026] (2) By setting up counterweights and water storage boxes, the door lock can be simulated to be subjected to the force of gravity and water vapor erosion during actual use, thus truly reflecting the durability of the door lock during use. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of an embodiment of the door lock durability testing fixture of this utility model;

[0028] Figure 2 for Figure 1 A partial longitudinal sectional view. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0031] like Figures 1 to 2 The image shows a preferred embodiment of the door lock durability testing fixture of this utility model. This door lock durability testing fixture is used to test the durability performance of a door lock 10 and includes a base 1, a rotating arm 2, a lock hook 3, a driving component 4, a counterweight 5, a water storage box 6, and a PLC control interface 7.

[0032] The door lock 10 has a push rod 101 and a latch 102.

[0033] The rear part of the top side of the base 1 has four hinge seats 11 arranged at intervals in the left and right direction; the front part of the upper part of the base 1 has four positioning seats 12 arranged at intervals in the left and right direction for fixing the door lock 10; and universal wheels 13 are installed at the four corners of the bottom of the base 1.

[0034] There are four rotating arms 2, each corresponding to one of the hinge seats 11, and they are arranged at intervals on the top of the base 1. Specifically, the rear end of each rotating arm 2 is hinged to the corresponding hinge seat 11 via a pivot 21, and it can rotate from the first position to the second position under the pushing force of the push rod 101 of the door lock 10; a connecting rod 22 is rotatably connected to the bottom surface of the front end of the rotating arm 2; a handle 23 is provided on the top surface of the front end of the rotating arm 2.

[0035] There are four locking hooks 3, which correspond one-to-one with the rotating arms 2. Each locking hook 3 is installed at the front position of the bottom surface of the rotating arm 2 for locking with the latch 102 of the door lock 10. The locking hook 3 is located between the free end and the fixed end of the rotating arm 2 and is set close to the connecting rod 22 of the corresponding rotating arm 2.

[0036] There are four drive components 4, each corresponding to one of the rotating arms 2, used to drive the corresponding rotating arm 2 to rotate from the second position to the first position. In this embodiment, the drive component 4 is a cylinder with a telescopic pull rod 41, which is drivenly connected to the connecting rod 22 of the corresponding rotating arm 2.

[0037] There are four counterweights 5, which correspond one-to-one with the rotating arms 2. Each counterweight 5 is installed in the front middle part of the bottom surface of the corresponding rotating arm 2.

[0038] There are four water storage boxes 6, which correspond one-to-one with the door locks 10 mentioned above. Each water storage box 6 is installed on the base 1, and its bottom outlet faces the corresponding door lock 10.

[0039] The PLC control interface 7 is installed at the bottom of the base 1. The interface is equipped with start, pause, and clear buttons, as well as setting buttons to control the opening and closing time of the door lock 10 and the dwell time of each point.

[0040] With the rotating arm 2 in the first position, the push rod 101 retracts inward, and the locking hook 3 locks into the locking buckle 102.

[0041] With the rotating arm 2 in the second position, the push rod 101 extends outward, and the locking hook 3 and the lock 102 are released from locking.

[0042] The working principle of this embodiment is as follows:

[0043] (1) Before the test, disconnect the connection between the pull rod 41 and the connecting rod 22, flip the rotating arm 2 upward, and then fix the door lock 10 on the positioning seat 12. At the same time, use the suspension method to measure the center of gravity of the door body, calculate the stress of the door body on the door lock 10, and then convert it into the pressure of the rotating arm 2 on the door lock 10. Equip the rotating arm 2 with a counterweight 5 of the corresponding weight, and finally flip the rotating arm 2 downward to the first position and restore the connection between the pull rod 41 and the connecting rod 22.

[0044] (2) During testing, turn on the switch on PLC control interface 7, set the parameters (rise within a few seconds, stay for a few seconds, then fall within a few seconds), and then start running:

[0045] Initially, rotating arm 2 is in the first position (see...). Figure 2 The rotating arm 2 on the left side of the middle, the push rod 101 retracts inward, and the locking hook 3 and the locking buckle 102 lock together;

[0046] When the door is opened, the push rod 101 of the door lock 10 extends outward and pushes the rotating arm 2 up through the lock hook 3, causing it to flip upward to the second position (see...). Figure 2 The rotating arm 2 on the right side of the middle simultaneously releases the locking hook 3 from the locking buckle 102;

[0047] When the door is closed, the push rod 101 of the door lock 10 falls back, the rotating arm 2 falls back to the top horizontal plane of the door lock 10 under the action of gravity, and then returns to the first position under the pull action of the pull rod 41. The lock hook 3 falls back to restore the locking engagement with the lock latch 102.

[0048] During operation, a water outlet system can be installed on the base 1 to continuously supply water to the water storage box 6, and the water in the water storage box 6 continuously leaks to the door lock 10 through its bottom outlet.

[0049] The above is one working cycle. By performing a reciprocating opening and closing action on the door lock 10, the durability of the door lock 10 can be tested.

[0050] In addition, in this application, the counterweight 5 and water storage box 6 can simulate the door's weight and water vapor erosion during actual use, thus truly reflecting the door lock's durability.

Claims

1. A door lock durability testing fixture, wherein the door lock (10) has a push rod (101) and a latch (102), characterized in that: The aforementioned door lock durability testing fixture includes: The base (1) is used to place the door lock (10); The rotating arm (2) is hinged to the base (1) and can rotate from the first position to the second position under the pushing force of the push rod (101) of the door lock (10); A locking hook (3) is installed on the rotating arm (2) for locking with the latch (102) of the door lock (10); as well as The driving component (4) is used to drive the rotating arm (2) to rotate from the second position to the first position; When the rotating arm (2) is in the first position, the push rod (101) retracts inward, and the locking hook (3) locks into the locking buckle (102). When the rotating arm (2) is in the second position, the push rod (101) extends outward, and the locking hook (3) is unlocked from the lock (102).

2. The door lock durability testing fixture according to claim 1, characterized in that: The free end of the rotating arm (2) is rotatably connected to a connecting rod (22), and the driving component (4) is a cylinder with a telescopic pull rod (41), which is drivenly connected to the connecting rod (22).

3. The door lock durability testing fixture according to claim 2, characterized in that: The locking hook (3) is located between the free end and the fixed end of the rotating arm (2).

4. The door lock durability testing fixture according to claim 1, characterized in that: The rear part of the top side of the base (1) has a hinge seat (11), and the rear end of the rotating arm (2) is hinged to the hinge seat (11) by a rotating shaft (21).

5. The door lock durability testing fixture according to claim 1, characterized in that: The base (1) has a positioning seat (12) for fixing the door lock (10).

6. The door lock durability testing fixture according to claim 1, characterized in that: The base (1) is equipped with a number of spaced casters (13) at its bottom.

7. The door lock durability testing fixture according to claim 1, characterized in that: The free end of the rotating arm (2) is provided with a handle (23).

8. The door lock durability testing fixture according to claim 1, characterized in that: The number of rotating arms (2) is at least two, and they are arranged at intervals on the base (1).

9. The door lock durability testing fixture according to any one of claims 1 to 8, characterized in that: It also includes a counterweight (5) corresponding to the rotating arm (2), the rotating arm (2) is mounted on the top of the base (1), and the counterweight (5) is mounted on the corresponding rotating arm (2).

10. The door lock durability testing fixture according to any one of claims 1 to 8, characterized in that: It also includes a water storage box (6) corresponding to the door lock (10), with the outlet at the bottom of the water storage box (6) facing the corresponding door lock (10).

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