A device for testing mechanical properties of locks and latches in furniture

Abstract

The invention discloses a mechanical performance testing device for locks and latches in furniture, comprising: a frame; a plurality of movable brackets, the top and bottom of which are movably arranged on the frame respectively; a lock durability performance testing component, a latch mechanical performance testing component and a force loading component which are correspondingly arranged on the movable brackets; wherein the lock durability performance testing component comprises: a first connecting plate, a motor fixing plate, a first disc, a connecting shaft, a sensor and a motor; the first connecting plate is connected to the motor fixing plate; the motor is fixed on one side of the motor fixing plate; the first disc is fixed on the other side of the motor fixing plate and is provided with two sensor support seats; a pair of sensors are respectively arranged on the two sensor support seats; the input end of the connecting shaft is connected to the output shaft of the motor, and the output end is connected to the lock, a second disc is sleeved at the middle position thereof, a small hole is provided on the second disc, and the sensor can face the small hole to trigger a signal for controlling the start and stop of the motor and the forward and reverse rotation, so that the connecting shaft rotates forward and reversely.

Description

Technical Field

[0001] The invention relates to a testing device, in particular to a testing device for mechanical properties of locks and latches in furniture. Background Art

[0002] At present, similar testing devices have the disadvantages of low automation, single testing items or low integration, and lack of real-time tracking and storage functions for relevant parameters of the testing process. Existing equipment generally only uses electric cylinders for force loading, and cannot accurately control the telescopic displacement, loading force and holding time of the electric cylinder piston cylinder, and does not have the force tracking, feedback and recording functions. In addition, the electric cylinder piston rod is prone to overshoot under the action of air pressure. Once the test piece is stuck, the equipment continues to move, which is easy to damage the test piece or equipment.

[0003] Therefore, a comprehensive and wide-ranging mechanical properties testing device for furniture locks and latches is needed. Summary of the invention

[0004] The purpose of the present invention is to provide a mechanical properties testing device for locks and latches in furniture, which integrates mechanical properties testing items for furniture locks, latches and push-pull components, can be freely combined and installed as needed, and is flexible to operate, greatly improving the integration level of the equipment. The testing machine introduces a stepper motor and an electric cylinder, which is controlled by a PLC, thereby improving the automation level of the equipment and realizing precise control of force loading and displacement.

[0005] In order to achieve the above objectives, the present invention is implemented by the following technical solutions:

[0006] A mechanical performance testing device for locks and latches in furniture, characterized by comprising:

[0007] frame;

[0008] A plurality of movable brackets, the top and bottom of which are movably arranged on the frame;

[0009] A lock durability performance test component, a latch mechanical performance test component and a force loading component are correspondingly arranged on the movable bracket;

[0010] The lock durability test components include:

[0011] A first connecting plate, a motor fixing plate, a first disc, a connecting shaft, a sensor and a motor;

[0012] The first connecting plate is connected to the motor fixing plate;

[0013] The motor is fixed to one side of the motor fixing plate;

[0014] The first disc is fixed to the other side of the motor fixing plate and is provided with two sensor support seats;

[0015] A pair of sensors, which are respectively arranged on two sensor support seats;

[0016] The input end of the connecting shaft is connected to the output shaft of the motor, and the output end is connected to the lock. A second disc is sleeved at the middle position, and a small hole is opened on the second disc. The sensor can face the small hole to trigger the start and stop forward and reverse rotation signal of the control motor, so that the connecting shaft can reverse forward and reverse.

[0017] The connecting shaft comprises: a first connecting member, a second connecting member and a third connecting member which are sequentially connected, the first connecting member is connected to the motor output shaft, a second disc is sleeved on the second connecting member, and the output end of the third connecting member is connected to a lock.

[0018] The forward and reverse rotation of the connecting shaft is used to control the opening and closing actions of the lock.

[0019] The position of the sensor support seat on the circumference of the first disk is adjusted to change the rotation angle of the motor.

[0020] The latch mechanical properties testing assembly comprises:

[0021] A second connecting plate;

[0022] A connecting rod, which is fixed to the second connecting plate, wherein the connecting rod is provided with a sliding groove;

[0023] A sliding seat, which is movably arranged in the sliding groove of the connecting rod;

[0024] A first electric cylinder is vertically arranged on a sliding seat;

[0025] The L-shaped connecting plate is fixed to the output shaft of the first electric cylinder.

[0026] The connecting rod and the second connecting plate form an angle α, and the angle α is 0 to 45 degrees.

[0027] The force loading assembly comprises:

[0028] Fixed seat;

[0029] A sector plate fixed to a fixing seat;

[0030] An electric cylinder locking component, which is fixed to the fan-shaped plate and is used to lock the second electric cylinder;

[0031] A guide seat and a guide rod, wherein the guide seat is located at one end of the second electric cylinder, and the guide rod passes through the guide seat and is connected to the output shaft of the second electric cylinder through a third connecting plate;

[0032] The mechanical sensor is connected to the output shaft of the second electric cylinder through an adapter.

[0033] The electric cylinder locking component comprises:

[0034] A rotating plate, which is fixed on the fan-shaped plate;

[0035] A locking plate, which is arranged on the rotating plate;

[0036] The fourth connecting plate is connected to the locking plate.

[0037] Compared with the prior art, the present invention has the following advantages:

[0038] The present invention integrates mechanical property testing items for furniture locks, latches and push-pull components, and can be installed in combination as needed. The operation is flexible, which greatly improves the integration level of the equipment. The testing machine introduces a stepper motor and an electric cylinder, which are controlled by PLC, thus improving the automation level of the equipment and realizing precise control of force loading and displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of a mechanical performance testing device for locks and latches in furniture according to the present invention;

[0040] Figure 2 for Figure 1 Schematic diagram of the structure of the middle lock durability performance test assembly;

[0041] Figure 3 for Figure 1 Schematic diagram of the structure of the middle pin mechanical properties test assembly;

[0042] Figure 4 for Figure 1 Schematic diagram of the structure of the medium-force loading component. DETAILED DESCRIPTION

[0043] The present invention will be further described below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0044] like Figure 1 As shown, a mechanical performance testing device for locks and latches in furniture comprises: a frame 1; a plurality of movable brackets 2, the top and bottom of which are movably arranged on the frame 1; a lock durability performance testing component 3, a latch mechanical performance testing component 4 and a force loading component 5 which are correspondingly arranged on the movable brackets.

[0045] Specifically, casters are provided at the bottom of the frame 1, and the casters can be locked; the top and bottom of the movable bracket 2 are respectively connected to the linear shaft on the frame 1 through linear bearings, and similar movable brackets are also provided on the other two sides of the frame; the lock durability performance test component 3, the latch mechanical performance test component 4 and the force loading component 5 are all connected to the linear shaft on the movable bracket 2 through linear bearings.

[0046] like Figure 2 As shown, the lock durability performance test assembly includes: a first connecting plate 31, a motor fixing plate 32, a first disc 33, a connecting shaft, a sensor 38 and a motor 39; the first connecting plate 31 is connected to the motor fixing plate 32;

[0047] The motor 39 is fixed to one side of the motor fixing plate 32;

[0048] The first disc 33 is fixed to the other side of the motor fixing plate 32 and is provided with two sensor support seats 34;

[0049] A pair of sensors 38 are respectively disposed on the two sensor support seats 34 . In a specific embodiment, the sensors 38 may be infrared sensors.

[0050] The input end of the connecting shaft is connected to the output shaft of the motor, and the output end is connected to the lock. A second disc 310 is sleeved at the middle position. A small hole 311 is opened on the second disc 310. The sensor 38 can face the small hole 311 to trigger the start and stop forward and reverse rotation signal of the control motor 39, so that the connecting shaft can be reversed forward and reversed.

[0051] The connecting shaft includes: a first connecting member 35, a second connecting member 36 and a third connecting member 37 which are sequentially connected, the first connecting member 35 is connected to the motor output shaft, a second disc 310 is sleeved on the second connecting member 36, and the output end of the third connecting member 37 is connected to a lock.

[0052] The forward and reverse rotation of the connecting shaft is used to control the opening and closing actions of the lock.

[0053] In a specific embodiment, the position of the sensor support seat 34 on the circumference of the first disk 33 can also be adjusted to change the rotation angle of the motor 39.

[0054] Furthermore, the third connecting member 37 of the lock durability performance test assembly is connected to the handle of the key inserted into the lock, and the starting position of the motor rotation, i.e., the angle of the motor rotation, is controlled through two sensors 38 and the small hole 311 on the second disc 310. The angle is consistent with the rotatable angle of the key in the lock. The sensor 38 is aligned with the small hole 311 to trigger a motor start / stop forward / reverse rotation signal. The second connecting member 36 and the first connecting member 35 rotate with the rotation of the motor 39. The first disc 33, the sensor support seat 34, and the sensor 38 do not rotate, and the position of the sensor support seat 34 on the first disc 33 can be adjusted. The assembly opens and closes the lock at a rate of 6-15 times per minute.

[0055] like Figure 3 As shown, the latch mechanical property test assembly 4 includes: a second connecting plate 41; a connecting rod 42, which is fixed to the second connecting plate 41, and the connecting rod 42 is provided with a slide groove; a sliding seat 43, which is movably arranged in the slide groove of the second connecting plate; a first electric cylinder 44, which is vertically arranged on the sliding seat 43; and an L-shaped connecting plate 45, which is fixed to the output shaft of the first electric cylinder 44.

[0056] The connecting rod 42 and the second connecting plate 41 form an angle α, and the angle α is 0 to 45 degrees.

[0057] Further, the latch on the furniture is connected to the hole on the end of 45, and the latch is opened and closed at a rate of 6-15 times per minute by the first electric cylinder 44. The first electric cylinder 44 can accurately control the stroke of the latch opening.

[0058] like Figure 4 As shown, the force loading assembly 5 includes: a fixed seat 510; a fan-shaped plate 59, which is fixed to the fixed seat 510; an electric cylinder locking component, which is fixed to the fan-shaped plate 59 and is used to lock the second electric cylinder 511; a guide seat 54 and a guide rod 53, wherein the guide seat 54 is located at one end of the second electric cylinder 511, and the guide rod 53 passes through the guide seat 54 and is connected to the output shaft of the second electric cylinder 511 through a third connecting plate 52; a mechanical sensor 58, which is connected to the output shaft of the second electric cylinder 511 through an adapter 51.

[0059] Specifically, the electric cylinder locking component includes: a rotating plate 57, which is fixed on the fan-shaped plate 59 (in addition to the locking position shown in the figure, it can also be deflected by ±30 degrees to be fixed); a locking plate 56, which is arranged on the rotating plate 57; and a fourth connecting plate 55, which is connected to the locking plate 56.

[0060] The force loading component tests the strength of locks and latches. When the locks and latches on the furniture are locked, the force values ​​are loaded by the electric cylinder in five directions: 90 degrees to the drawer or door panel, 30 degrees upward, downward, left, and right.

[0061] This component is also used to test the strength of the interlocking device. When the furniture has an interlocking device, the force value can be applied to each push-pull component in turn.

[0062] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A device for testing the mechanical properties of furniture locks and latches, characterized in that: include: frame; A plurality of movable brackets, the top and bottom of which are movably arranged on the frame; A lock durability performance test component, a latch mechanical performance test component and a force loading component are correspondingly arranged on the movable bracket; The lock durability test components include: A first connecting plate, a motor fixing plate, a first disc, a connecting shaft, a sensor and a motor; The first connecting plate is connected to the motor fixing plate; The motor is fixed to one side of the motor fixing plate; The first disc is fixed to the other side of the motor fixing plate and is provided with two sensor support seats; A pair of sensors, which are respectively arranged on two sensor support seats; The input end of the connecting shaft is connected to the output shaft of the motor, and the output end is connected to the lock. A second disc is sleeved at the middle position, and a small hole is opened on the second disc. The sensor can face the small hole to trigger the start and stop forward and reverse rotation signal of the control motor, so that the connecting shaft can be reversed forward and reversed; The latch mechanical properties testing assembly comprises: A second connecting plate; A connecting rod, which is fixed to the second connecting plate, wherein the connecting rod is provided with a sliding groove; A sliding seat, which is movably arranged in the sliding groove of the connecting rod; A first electric cylinder is vertically arranged on a sliding seat; An L-shaped connecting plate, which is fixed to the output shaft of the first electric cylinder; The force loading assembly comprises: Fixed seat; A sector plate fixed to a fixing seat; An electric cylinder locking component, which is fixed to the fan-shaped plate and is used to lock the second electric cylinder; A guide seat and a guide rod, wherein the guide seat is located at one end of the second electric cylinder, and the guide rod passes through the guide seat and is connected to the output shaft of the second electric cylinder through a third connecting plate; The mechanical sensor is connected to the output shaft of the second electric cylinder through an adapter.

2. The mechanical properties testing device for furniture locks and latches according to claim 1, characterized in that: The connecting shaft comprises: a first connecting member, a second connecting member and a third connecting member which are sequentially connected, the first connecting member is connected to the motor output shaft, a second disc is sleeved on the second connecting member, and the output end of the third connecting member is connected to a lock.

3. The mechanical properties testing device for furniture locks and latches according to claim 1, characterized in that: The forward and reverse rotation of the connecting shaft is used to control the opening and closing actions of the lock.

4. The mechanical properties testing device for furniture locks and latches as claimed in claim 3, characterized in that: The position of the sensor support seat on the circumference of the first disk is adjusted to change the rotation angle of the motor.

5. The mechanical properties testing device for furniture locks and latches according to claim 1, characterized in that: The connecting rod and the second connecting plate form an angle α, and the angle α is 0 to 45 degrees.

6. The mechanical properties testing device for furniture locks and latches according to claim 1, characterized in that: The electric cylinder locking component comprises: A rotating plate, which is fixed on the fan-shaped plate; A locking plate, which is arranged on the rotating plate; The fourth connecting plate is connected to the locking plate.

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