Hardness testing machine for automobile door handle

Abstract

The utility model relates to the technical field of automobile door handles, in particular to an automobile door handle hardness testing machine which comprises a machine base, a hydraulic cylinder installed at the upper right end of the machine base, a hydraulic rod in transmission connection with the lower end of the hydraulic cylinder, and a pressure block installed at the lower end of the hydraulic rod and used for moving downwards to be pressed on the end wall of a handle. A rectangular inner groove is formed in the right end wall of the machine base in a penetrating mode, a rectangular transverse plate is arranged on the right end wall of the machine base, an arc opening used for being attached to the end wall of a handle is formed in the lower end wall of the pressure block, a screw hole is vertically formed in the center of the transverse plate in a penetrating mode, and a screw rod is installed in the screw hole. A side opening is correspondingly formed in the position, close to the side end wall of the screw hole, of the transverse plate, a side disc is installed on the inner side of the side opening, and a semicircular disc notch is formed in the top end wall of the side disc. Due to the design of the arc opening in the lower end wall of the pressure block, the pressure block can be better attached to the end wall of the handle, and sufficient force can be better applied to the handle.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile door handles, in particular to an automobile door handle hardness testing machine. Background Art

[0002] Car doors are equipped with handles, which are used to open the car doors. After the handles are manufactured, they will be tested for hardness. This hardness testing machine is used to test the hardness of the handles to ensure that there will be no damage when the handles are put into use.

[0003] When testing car door handles, a common press is used. The common press has a simple structure. The handle is placed on the press, and a hydraulic cylinder drives a hydraulic rod, which in turn drives a downward pressure block to squeeze the handle to test the handle's compression resistance and hardness. However, due to the arc shape of the handle's surface, a simple downward pressure test cannot fully test the handle's compression resistance or hardness. Utility Model Content

[0004] The utility model aims to provide a car door handle hardness testing machine.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A car door handle hardness testing machine includes a machine base, a hydraulic cylinder installed at the upper right end of the machine base, a hydraulic rod connected to the lower end of the hydraulic cylinder, a pressure block installed at the lower end of the hydraulic rod for downward movement and pressing on the handle end wall, a rectangular inner groove is passed through the right end wall of the machine base, a rectangular cross plate is placed on the right end wall of the machine base, an arc opening for fitting the handle end wall is opened at the lower end wall of the pressure block, a screw hole is vertically passed through the center of the cross plate, a screw is installed in the screw hole, a side opening is correspondingly opened at the side end wall of the cross plate close to the screw hole, a side plate is installed on the inner side of the side opening, and a semicircular plate notch is opened on the top wall of the side plate.

[0007] Preferably, the hydraulic cylinder drives the hydraulic rod to move downward, so that the pressure block is pressed down on the end wall of the handle.

[0008] Preferably, the arc opening of the pressure block is matched with the arc-shaped end wall of the handle, so that when the pressure block moves downward, the arc opening of the pressure block is in close contact with the end wall of the handle.

[0009] Preferably, the machine base and the hydraulic cylinder are fixedly connected, and the hydraulic rod is divided into two sections, an upper section and an lower section, and a pressure sensor is fixed between the upper and lower sections of the hydraulic rod.

[0010] Preferably, the machine base and the transverse plate are fixedly connected, and the transverse plate is threadedly connected to the screw rod through a screw hole. When the screw rod is rotated, the screw rod moves upward along the screw hole and protrudes out from the top of the screw hole.

[0011] Preferably, the transverse plate is provided with two side openings and a side plate, and the side openings and the side plate are threadedly connected.

[0012] The utility model has at least the following beneficial effects:

[0013] 1. The arc design at the lower end wall of the pressure block allows the pressure block to fit better with the end wall of the handle, exerting sufficient force on the handle;

[0014] 2. The screw design at the screw hole is used to perform small node contact detection on the handle and test the high-strength hardness resistance. The side plate design at the side opening allows the handle to be lifted up and the bottom to be hollowed out, so that the handle can be more fully stressed and the handle can be observed more fully after the force is applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A schematic diagram of the present utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the screw holes and screw rods on the horizontal plate;

[0018] Figure 3 for Figure 1 A top view of the screw holes and screw rods at the horizontal plate;

[0019] Figure 4 for Figure 1 Schematic diagram of the side view of the pressure block and arc opening.

[0020] In the figure: 1. Machine base; 2. Hydraulic cylinder; 3. Hydraulic rod; 4. Pressure block; 5. Arc mouth; 6. Inner groove; 7. Horizontal plate; 8. Screw hole; 9. Screw; 10. Side mouth; 11. Side plate; 12. Plate notch. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] See also Figure 1-4 The utility model provides a technical solution for a car door handle hardness testing machine:

[0023] like Figure 1-4 As shown, a car door handle hardness testing machine includes a machine base 1, a hydraulic cylinder 2 installed at the upper right end of the machine base 1, a hydraulic rod 3 connected to the lower end of the hydraulic cylinder 2, and a pressure block 4 installed at the lower end of the hydraulic rod 3 for downward movement and pressing on the handle end wall. The machine base 1 and the hydraulic cylinder 2 are fixedly connected, and the hydraulic rod 3 is divided into two sections, an upper and a lower section, with a pressure sensor fixed between the upper and lower sections of the hydraulic rod 3. The hydraulic cylinder 2 drives the hydraulic rod 3 to move downward, so that the pressure block 4 presses down on the handle end wall.

[0024] like Figure 3 and Figure 4 As shown, a rectangular inner groove 6 is formed on the right end wall of the machine base 1, and a rectangular horizontal plate 7 is placed on the right end wall of the machine base 1. An arc opening 5 for fitting the handle end wall is formed on the lower end wall of the pressure block 4. The arc opening 5 of the pressure block 4 is adapted to the arc-shaped end wall of the handle so that when the pressure block 4 moves downward, the arc opening 5 of the pressure block 4 is in close contact with the handle end wall.

[0025] like Figure 1 、 Figure 2 and Figure 3 As shown, a screw hole 8 is vertically passed through the center of the horizontal plate 7, a screw rod 9 is installed in the screw hole 8, a side opening 10 is correspondingly opened at the side end wall of the horizontal plate 7 near the screw hole 8, a side plate 11 is installed inside the side opening 10, and a semicircular plate notch 12 is opened on the top wall of the side plate 11. The machine base 1 and the horizontal plate 7 are fixedly connected, and the horizontal plate 7 is threadedly connected to the screw rod 9 through the screw hole 8. When the screw rod 9 is rotated, the screw rod 9 moves up along the screw hole 8 and protrudes from the top of the screw hole 8. Two side openings 10 and a side plate 11 are provided on the horizontal plate 7. The side openings 10 and the side plate 11 are threadedly connected. When the screw 9 is rotated, the screw 9 moves up. At this time, the handle is placed On the horizontal plate 7, when the hydraulic cylinder 2 is driven and the pressure block 4 is pressed down on the handle, the handle is brought into contact with the small-sized screw 9. The contact point is small and the pressure on the handle is large, so a high-intensity hardness test is performed on the handle. When the screw 9 is retracted in the screw hole 8, the handle can be placed directly on the horizontal plate 7, or the side plate 11 can be rotated and moved upward, and the plate notches 12 of the two side plates 11 are made to face each other. At this time, the side end of the handle is carried at the plate notch 12, and the bottom of the handle is suspended. The hydraulic cylinder 2 is driven and the pressure block 4 is pressed down on the handle. The state observation of the handle when it is pressed down is more intuitive, and it can be clearly observed whether there are cracks or cracks on the end wall of the handle.

[0026] Working principle: Test the handle according to the requirements:

[0027] When the handle needs to be tested for high strength and small node hardness, the screw rod 9 is rotated and moved upward. At this time, the screw rod 9 abuts against the handle end wall placed on the horizontal plate 7. The hydraulic cylinder 2 operates, driving the hydraulic rod 3 and the pressure block 4 downward, so that the pressure block 4 is squeezed against the handle end wall, applying a downward pressure to the handle. The handle contacts the small contact point of the screw rod 9 end wall to test the hardness of the handle.

[0028] When the hardness of the handle needs to be quickly tested, the handle is simply placed on the horizontal plate 7, or the side plate 11 in the side opening 10 is rotated to move the side plate 11 upward and the plate notches 12 on the side plate 11 are positioned opposite each other. At this time, the two ends of the handle are respectively placed in the two plate notches 12, so that the handle is raised to a certain height and the bottom is hollowed out to better observe the shape changes of the handle during the hardness test. During the test, the hydraulic cylinder 2 is operated to drive the hydraulic rod 3 and the pressure block 4 to move downward, so that the pressure block 4 is squeezed on the end wall of the handle to perform the hardness test on the handle;

[0029] The arc opening 5 of the pressure block 4 is designed to better fit the lower end surface of the pressure block 4 with the arc-shaped end wall of the handle, so that when the pressure block 4 presses down on the handle, the force applied is more sufficient.

[0030] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A car door handle hardness testing machine, comprising a machine base (1), a hydraulic cylinder (2) installed at the upper right end of the machine base (1), a hydraulic rod (3) connected to the lower end of the hydraulic cylinder (2), and a pressure block (4) installed at the lower end of the hydraulic rod (3) for downward movement and pressing on the handle end wall, characterized in that: A rectangular inner groove (6) is provided on the right end wall of the machine base (1), a rectangular horizontal plate (7) is arranged on the right end wall of the machine base (1), an arc opening (5) for fitting the handle end wall is provided on the lower end wall of the pressure block (4), a screw hole (8) is vertically passed through the center of the horizontal plate (7), a screw rod (9) is installed in the screw hole (8), a side opening (10) is correspondingly provided on the side end wall of the horizontal plate (7) close to the screw hole (8), a side plate (11) is installed on the inner side of the side opening (10), and a semicircular plate notch (12) is provided on the top wall of the side plate (11).

2. The automobile door handle hardness testing machine according to claim 1, characterized in that: The hydraulic cylinder (2) drives the hydraulic rod (3) to move downward, so that the pressure block (4) is pressed downward on the handle end wall.

3. The automobile door handle hardness testing machine according to claim 1, characterized in that: The arc opening (5) of the pressure block (4) is adapted to the arc-shaped end wall of the handle, so that when the pressure block (4) moves downward, the arc opening (5) of the pressure block (4) is in close contact with the end wall of the handle.

4. The automobile door handle hardness testing machine according to claim 1, characterized in that: The machine base (1) and the hydraulic cylinder (2) are fixedly connected, and the hydraulic rod (3) is divided into two sections, an upper section and an lower section, and a pressure sensor is fixed between the upper and lower sections of the hydraulic rod (3).

5. The automobile door handle hardness testing machine according to claim 1, characterized in that: The machine base (1) and the transverse plate (7) are fixedly connected, and the transverse plate (7) is threadedly connected to the screw rod (9) through the screw hole (8). When the screw rod (9) is rotated, the screw rod (9) moves upward along the screw hole (8) and protrudes out from the top of the screw hole (8).

6. The automobile door handle hardness testing machine according to claim 1, characterized in that: The transverse plate (7) is provided with two side openings (10) and a side disc (11), and the side openings (10) and the side disc (11) are threadedly connected.

Images