Sensing head full-angle adjustable travel switch

Abstract

The utility model discloses a full-angle adjustable travel switch of a sensing head, which comprises the sensing head, a rotating shaft and a connecting socket which are arranged outside a shell, and a cam, a torsion spring, a torsion spring limiting rod and a microswitch which are arranged in the shell, the sensing head is connected with the rotating shaft, the rotating shaft extends into the shell, the torsion spring and the cam are arranged on the rotating shaft, the torsion spring limiting rod is arranged above the rotating shaft in the same direction, and the microswitch is arranged in the shell. Spring arms at the two ends of the torsion spring are arranged on the two sides of the torsion spring limiting rod respectively, the cam can abut against a reed contact of a microswitch installed on the side, and the microswitch is connected with a connecting socket installed on the outer side of the shell through an electric wire. The utility model has the advantages of compact and reasonable structure and good pressing effect; and meanwhile, the sensing head can be adjusted in position by 360 degrees and slightly adjusted at a small angle, so that the mounting requirements of different environments are met.

Description

Technical Field

[0001] The utility model relates to the field of mechanical position sensors, in particular to a travel switch with full-angle adjustable sensing head. Background Art

[0002] Mechanical position sensors use input pressure to trigger the elastic element of the pressure switch to form elastic deformation to obtain signals. This device is widely used in automatic detection and automatic control technology. The accuracy of sensor signal acquisition and the life of the trigger times are important performance parameters of the device. In addition, the equipment installation environment is complex and diverse, and the installation angle requirements of the pressure point are different. Designing a travel switch that can be installed according to local conditions has a good market prospect. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a sensor head with a full-angle adjustable travel switch, which has a compact and reasonable structure and good touch and pressure effect. At the same time, the sensor head can adjust the position 360 degrees and fine-tune at small angles to meet the installation requirements of different environments.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The sensor head has a full-angle adjustable travel switch, comprising a sensor head, a rotating shaft, a connecting socket outside a shell, and a cam, a torsion spring, a torsion spring limit rod, and a micro switch inside the shell. The sensor head is connected to the rotating shaft, the rotating shaft extends into the shell, the torsion spring and the cam are installed on the rotating shaft, a torsion spring limit rod is installed in the same direction above the rotating shaft, the spring arms at both ends of the torsion spring are respectively on both sides of the torsion spring limit rod, the cam can contact the reed contact of the micro switch installed on the side, and the micro switch is connected to the connecting socket installed on the outside of the shell with electric wires.

[0006] A further improvement is that a retaining spring is provided on the inner side of the rotating shaft extending into the housing, and the retaining spring is installed to tighten the rotating shaft to prevent the rotating shaft from moving in series.

[0007] A further improvement is that the rotating shaft is provided with a baffle on the outer side of the shell, a notch is provided on the baffle, and a limiting protrusion is provided on the shell within the range corresponding to the notch. The rotation range of the rotating shaft plays a limiting role.

[0008] A further improvement is that the cam and the micro switch are provided in two groups, so as to improve the acquisition accuracy and prevent one group from malfunctioning.

[0009] A further improvement is that the sensor head includes a columnar contact connected to a connecting block with a connecting rod, a center hole is formed in the connecting block, a side hole is formed on the side of the connecting block and communicates with the center hole, a thread groove is formed on the outer peripheral surface of the rotating shaft, the thread groove of the rotating shaft is inserted into the center hole, and a bolt extends from the side hole into the center hole and connects with the thread groove. By adjusting the bolt, the sensor head can be adjusted to different angles to adapt to the installation environment.

[0010] A further improvement is that two side holes are provided, and the bolts in the holes on both sides are screwed and fixed in opposite directions.

[0011] A further improvement is that the contact of the sensor head is connected to the connecting rod and the connecting block to form a "7" shape.

[0012] A further improvement is that the micro switch is fixed in the housing via a switch bracket.

[0013] A further improvement is that a round shaft is mounted on the reed contact of the micro switch, and the cam can contact the circumference of the round shaft.

[0014] A further improvement is that the cam is connected to a pressure rod, which is located between two spring arms of the torsion spring. Beneficial Effects

[0015] 1. The sensor head is touched and pressed, the shaft rotates to drive the cam to rotate, the cam touches the reed contact of the micro switch, the micro switch receives the signal and transmits it through the connection socket, and the torsion spring plays a reset role. The structure is simple and reasonable, and the purpose is achieved accurately.

[0016] 2. The center hole of the sensor head is connected to the rotating shaft by bolts. The installation angle of the sensor head can be adjusted 360 degrees. At the same time, the bolts are locked with the thread grooves. The angle can be fine-tuned by adjusting the bolts to meet the needs of complex installation environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view schematic diagram of the utility model;

[0018] Figure 2 The internal structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 3 This is a three-dimensional diagram of the sensor head of the utility model;

[0020] Figure 4 This is a three-dimensional diagram of the rotating shaft of the utility model;

[0021] Figure 5 A stereogram of the sensor head and shaft assembly;

[0022] Figure 6 The internal structure of the utility model is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0023] like Figures 1 to 5As shown, the utility model includes a sensor head 2, a rotating shaft 3, a baffle 10, a connecting socket 4 outside a shell 1 and a cam 5, a torsion spring 6, a torsion spring limit rod 7, a micro switch 8, and a retaining spring 9 inside the shell. The sensor head 2 is connected to the rotating shaft 3, and the rotating shaft 3 extends into the shell and is locked with the retaining spring 9 to prevent the rotating shaft from moving in series. The torsion spring 6 and the cam 5 are installed on the rotating shaft 3. The cam 5 is connected to a pressure rod 15, and the pressure rod 15 is located between two spring arms of the torsion spring. A torsion spring limit rod 7 is installed in the same direction above the rotating shaft 3. The spring arms at both ends of the torsion spring 6 are respectively on both sides of the torsion spring limit rod 7. The micro switch 8 is fixed to the side of the cam 5 in the shell through a switch bracket 14. A round shaft 82 is installed on the reed contact 81 of the micro switch. The cam 5 can contact the circumference of the round shaft 82. The micro switch 8 is connected to the connecting socket 4 installed on the outer side of the shell by electric wires. The baffle 10 is arranged on the rotating shaft 3 outside the housing, a notch 11 is provided on the baffle 10, and a limiting protrusion 12 is provided on the housing 1 within the range corresponding to the notch, which plays the role of limiting the rotation of the rotating shaft.

[0024] Working process: The sensor head is touched and pressed, the shaft rotates to drive the cam to rotate, the cam touches the reed contact of the micro switch, the micro switch obtains the signal and transmits it through the connecting socket, and the torsion spring plays a resetting role.

[0025] The sensor head 2 includes a columnar contact 21 connected to a connecting block 23 by a connecting rod 22, forming a "7" shape. The connecting block 23 has a central hole 24, and two side holes 25 are provided on the side of the connecting block to communicate with the central hole 24. A thread groove 31 is provided on the outer peripheral surface of the rotating shaft 3, and the thread groove 31 of the rotating shaft is inserted into the central hole 24. The bolt 13 extends from the side hole 25 into the central hole 24 and connects with the thread groove 31. The bolts in the holes on both sides are screwed in reverse to fix. The connection structure between the sensor head and the rotating shaft allows the installation angle of the sensor head to be adjusted 360 degrees, and the angle can also be fine-tuned by bolts to meet the needs of complex installation environments.

[0026] like Figure 6 As shown, the cam 5 and micro switch 8 are provided in two groups, and the rest is the same as the above embodiment.

[0027] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. The sensor head has a full-angle adjustable travel switch, which features: The invention comprises a sensor head (2), a rotating shaft (3), a connecting socket (4) outside a housing (1), and a cam (5), a torsion spring (6), a torsion spring limiting rod (7), and a micro switch (8) inside the housing. The sensor head (2) is connected to the rotating shaft (3), the rotating shaft (3) extends into the housing, the torsion spring (6) and the cam (5) are mounted on the rotating shaft (3), a torsion spring limiting rod (7) is mounted in the same direction above the rotating shaft (3), the spring arms at both ends of the torsion spring (6) are respectively on both sides of the torsion spring limiting rod (7), the cam (5) can abut against a reed contact (81) of a micro switch (8) mounted on the side, and the micro switch (8) is connected to the connecting socket (4) mounted on the outer side of the housing by electric wires.

2. The sensor head full-angle adjustable travel switch according to claim 1 is characterized in that: The rotating shaft (3) extends into the inner side of the housing and is provided with a clamping spring (9).

3. The sensor head full-angle adjustable travel switch according to claim 1 is characterized in that: The rotating shaft (3) is provided with a baffle (10) on the outer side of the shell, a notch (11) is formed on the baffle (10), and a limiting protrusion (12) is provided on the shell (1) within a range corresponding to the notch.

4. The sensor head full-angle adjustable travel switch according to claim 1 is characterized in that: The cam (5) and micro switch (8) are provided in two groups accordingly.

5. The sensor head full-angle adjustable travel switch according to claim 1 is characterized in that: The sensor head (2) comprises a columnar contact (21) connected to a connecting block (23) by a connecting rod (22); the connecting block (23) has a central hole (24); a side hole (25) is formed on a side surface of the connecting block and communicates with the central hole (24); a thread groove (31) is formed on the outer end circumference of the rotating shaft (3); the thread groove (31) of the rotating shaft is inserted into the central hole (24); and a bolt (13) extends from the side hole (25) into the central hole (24) and connects with the thread groove (31).

6. The sensor head full-angle adjustable travel switch according to claim 5 is characterized in that: Two side holes (25) are provided, and bolts are screwed in opposite directions to fix them in the holes on both sides.

7. The sensor head full-angle adjustable travel switch according to claim 5 is characterized in that: The contact of the sensor head (2) is connected to the connecting rod and the connecting block in a "7" shape.

8. The sensor head full-angle adjustable travel switch according to claim 1 is characterized in that The micro switch (8) is fixed in the housing via a switch bracket (14).

9. The sensor head full-angle adjustable travel switch according to claim 1 is characterized in that: A circular shaft (82) is mounted on the reed contact (81) of the micro switch, and the cam (5) can contact the circumference of the circular shaft (82).

10. The sensor head full-angle adjustable travel switch according to claim 1, characterized in that: The cam (5) is connected to a pressure rod (15), and the pressure rod (15) is located between two spring arms of the torsion spring.

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