Mounting structure and mounting method of limit switch sensor

Abstract

The invention discloses a mounting structure and a mounting method of a limit switch sensor, the mounting structure comprises a base, a load plate and a plurality of elastic pieces, and one end of the base is provided with a mounting part for mounting the limit switch sensor; a contact probe is arranged at one end of the load plate close to the mounting part; the elastic member is mounted between opposite surfaces of the base and the load plate to form a mounting gap between the limit switch sensor and the contact probe. According to the invention, the limit switch sensor and the measured object are designed to be in elastic limit contact, so that the mounting structure can retract under the elastic acting force when being in contact with the measured object, and the mounting gap between the limit switch sensor and the contact probe is compressed to an effective limit stroke range of the limit switch sensor; therefore, the position or the formed action of the moving part can be locked, and the locking requirement of a non-metal product can be met.

Description

Technical Field

[0001] The invention relates to the technical field of assembly and debugging of electromechanical products, in particular to a mounting structure of a limit switch sensor and a mounting structure thereof. Background Art

[0002] The limit switch sensor is a commonly used low-current master electrical appliance that can be installed on relatively static objects (such as fixed frames, door frames, etc., referred to as static objects) or moving objects (such as vehicles, doors, etc., referred to as animals). The collision of mechanical moving parts is used to make the contact action to realize the round-trip or segmented control circuit to achieve a certain control purpose. Usually, this type of switch is used to limit the position or form the action of mechanical moving parts, so that the mechanical moving parts stop at the specified position or form the action. At present, the installation method of the limit switch sensor plays a decisive role in the motion state control to be achieved by the limit switch sensor. Therefore, the limit switch sensor has high requirements for the installation method, which is mainly reflected in the base structure characteristics, structural morphology control and other aspects. If the installation structure does not meet the requirements, or the installation method is incorrect, the limit switch sensor will fail, resulting in contact errors in the output of the limit switch sensor, which will ultimately cause the limit switch sensor to fail to meet the motion control requirements.

[0003] However, traditional limit switch sensors need to contact the limit switch with a metal probe to implement the action stop command. When the object to be measured is a non-metallic product, it is difficult for the limit switch to achieve the stop requirement. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a mounting structure and a mounting structure of a limit switch sensor to solve the technical problems mentioned in the prior art.

[0005] A mounting structure for a limit switch sensor, the mounting structure comprising:

[0006] A base having a mounting portion at one end for mounting a limit switch sensor;

[0007] A load plate, one end of which is close to the mounting portion and is provided with a contact probe, wherein the contact probe contacts the limit switch sensor so that the limit switch sensor realizes a stopping action;

[0008] a plurality of elastic members installed between the base and the opposite surface of the load plate to form an installation gap between the limit switch sensor and the contact probe;

[0009] The load plate or the base contacts the object to be measured to compress the elastic member to eliminate the installation gap.

[0010] Optionally, two groups of elastic members are provided, and the two groups of elastic members are symmetrically arranged on opposite sides of the limit switch sensor.

[0011] Optionally, the elastic member includes:

[0012] A box-type module is arranged on the base and is provided with a first through hole along the extension direction of the elastic member;

[0013] A positioner is disposed on the load plate and is provided with a second through hole along the extension direction of the center line of the first through hole;

[0014] An optical axis is disposed between the box-type module and the positioner, and has limiting portions respectively passing through the first through hole and the second through hole at both ends;

[0015] The spring is arranged on the optical axis, and two ends thereof are respectively in contact with the opposite surfaces of the box-type module and the positioner.

[0016] Optionally, the box-type module is detachably mounted on the base;

[0017] And / or, the positioner is detachably mounted on the load plate.

[0018] Optionally, at least one end of the optical axis contracts inwardly to form a step surface, and a thread groove is provided on the step surface. The thread groove is threadedly connected to the limiting portion on the corresponding side to adjust the deformation amount of the installation gap.

[0019] Optionally, the deformation amount of the installation gap is greater than or equal to the pre-travel of the limit switch sensor.

[0020] Optionally, a plurality of groups of mounting holes are arranged side by side on the mounting portion along the extension and contraction direction of the elastic member.

[0021] Optionally, the base and the load plate are both forged aluminum alloy plates.

[0022] A method for installing a limit switch sensor, using the above-mentioned installation structure to install the limit switch sensor, the installation method comprises the following steps:

[0023] Install the base or the load plate to a preset position facing the object to be measured, so that the telescopic direction of the telescopic member is consistent with the movement direction of the object to be measured;

[0024] The limit switch sensor is mounted on the mounting portion, and the pre-travel of the limit switch sensor is adjusted to within a preset range.

[0025] Optionally, the preset position is arranged on the stationary part or the moving part.

[0026] The beneficial effects that the present invention can produce include:

[0027] The present invention provides a mounting structure and mounting structure of a limit switch sensor. By designing an elastic limit contact between the limit switch sensor and the object to be measured, the mounting structure can retract under the elastic force when contacting the object to be measured, thereby compressing the mounting gap between the limit switch sensor and the contact probe to within the effective limit stroke range of the limit switch sensor, so as to lock the position or form the action of the moving part, and can be suitable for the stopping requirements of non-metallic products; at the same time, the limit switch sensor does not directly contact the moving part, which can avoid damage to the moving part when it collides with the limit switch sensor for a long time, and under the action of the spring, it can buffer the impact force between the limit switch sensor and the contact probe, further improving the service life of the limit switch sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the installation structure of a limit switch sensor of the present invention;

[0029] Figure 2 For the present invention Figure 1 A schematic diagram of a structure in which an optical axis has a thread groove;

[0030] In the figure: 1. base, 2. mounting part, 3. load plate, 4. contact probe, 5. mounting gap, 6. box module, 7. positioner, 8. optical axis, 9. spring, 10. threaded groove, 11. limit part, 12. mounting hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1As shown, the present invention provides a mounting structure of a limit switch sensor, the mounting structure comprising a base 1, a load plate 3 and a plurality of elastic members, one end of the base 1 is provided with a mounting portion 2 for mounting a limit switch sensor (such as an SN04 series limit switch sensor) to fix the limit switch sensor on the base 1; an end of the load plate 3 close to the mounting portion 2 is provided with a contact probe 4, the contact probe 4 adopts a metal block matching the position of the limit switch sensor, and the contact probe 4 contacts the limit switch sensor to enable the limit switch sensor to achieve a stopping action; the elastic member is installed between the opposite surfaces of the base 1 and the load plate 3 to form an installation gap 5 between the limit switch sensor and the contact probe 4; the load plate 3 or the base 1 contacts the object to be measured to compress the elastic member to eliminate the installation gap 5. In the above, by designing an elastic limit contact between the limit switch sensor and the object to be measured, the mounting structure can retract under the elastic force when it contacts the object to be measured, thereby compressing the mounting gap 5 between the limit switch sensor and the contact probe 4 to within the effective limit stroke range of the limit switch sensor, so as to lock the position or movement of the moving part, which can be suitable for the stopping requirements of non-metallic products; at the same time, the limit switch sensor is not in direct contact with the moving part, which can avoid damage to the moving part when it collides with the limit switch sensor for a long time, and under the action of the spring 9, it can buffer the impact force between the limit switch sensor and the contact probe 4, further improving the service life of the limit switch sensor.

[0033] In this embodiment, two groups of elastic members are provided, and the two groups of elastic members are symmetrically arranged on opposite sides of the limit switch sensor to balance the impact force exerted on the base 1 or the load plate 3 and transmit it along the expansion and contraction direction of the elastic members to avoid squeezing and deforming the elastic members, thereby ensuring the normal use of the installation structure. Specifically, the elastic member includes a box module 6, a positioner 7, an optical axis 8 and a spring 9. The box module 6 is arranged on the base 1 and is provided with a first through hole along the extension direction of the elastic member; the positioner 7 is arranged on the load plate 3 and is provided with a second through hole along the extension direction of the center line of the first through hole; the optical axis 8 is arranged between the box module 6 and the positioner 7, and the two ends are respectively penetrated through the first through hole and the second through hole with a limit portion 11; the spring 9 is arranged on the optical axis 8, and the two ends are respectively in contact with the opposite surfaces of the box module 6 and the positioner 7, so that when the base 1 or the load plate 3 is subjected to an impact load, the corresponding box module 6 or positioner 7 connected thereto is driven to slide along the surface of the optical axis 8 and compress the spring 9, thereby compressing the installation gap 5 between the limit switch sensor and the contact probe 4 to within the effective limit stroke range of the limit switch sensor, thereby realizing the stopping action; when the stopping action of the moving part fails, under the action of the elastic restoring force of the spring 9, the installation gap 5 between the limit switch sensor and the contact probe 4 is restored to its original state, so as to perform a stopping operation on the next moving part.

[0034] In this embodiment, the box-type module 6 is detachably mounted on the base 1; the positioner 7 is detachably mounted on the load plate 3, so as to facilitate the removal and replacement of the elastic member. Figure 2 As shown, at least one end of the optical axis 8 is contracted inward to form a step surface, and a thread groove 10 is provided on the step surface, and the thread groove 10 is threadedly connected with the limit portion 11 on the corresponding side to adjust the deformation of the installation gap 5. Specifically, the deformation of the installation gap 5 is greater than or equal to the pre-stroke of the limit switch sensor, wherein the pre-stroke refers to the stroke before the limit switch sensor is started, that is, a distance before the start, usually a few millimeters before the limit switch sensor is triggered. The pre-stroke can avoid the loss caused by the long-term operation of the limit switch sensor, and can also improve the working accuracy and reliability of the limit switch sensor.

[0035] In this embodiment, a plurality of mounting holes 12 are arranged side by side on the mounting portion 2 along the extension and contraction direction of the elastic member to install limit switch sensors of different types, and the pre-travel size of the limit switch sensor can be adjusted by the front and rear position relationship of the mounting holes 12.

[0036] In this embodiment, the base 1 and the load plate 3 are both forged aluminum alloy plates, and the forged aluminum alloy plates are subjected to artificial aging treatment, which can ensure the performance stability of the installation structure.

[0037] The present invention also provides a method for installing a limit switch sensor, and the limit switch sensor is installed using the above-mentioned installation structure. The installation method includes the following steps: installing the base 1 or the load plate 3 to a preset position toward the object to be measured, so that the telescopic direction of the telescopic member is consistent with the movement direction of the object to be measured; then the limit switch sensor is fixedly installed on the installation portion 2 by bolts, and the pre-travel of the limit switch sensor is adjusted to within a preset range. In the above, the preset position can be set on a stationary part or a moving part, which has a wide range of applicability.

Claims

1. A mounting structure for a limit switch sensor, characterized in that: The mounting structure comprises: A base (1) having a mounting portion (2) at one end for mounting a limit switch sensor; A load plate (3) is provided with a contact probe (4) at one end close to the mounting portion (2), wherein the contact probe (4) contacts the limit switch sensor so that the limit switch sensor realizes a stopping action; A plurality of elastic members are installed between the base (1) and the opposite surfaces of the load plate (3) to form an installation gap (5) between the limit switch sensor and the contact probe (4); The load plate (3) or the base (1) contacts the object to be measured to compress the elastic member to eliminate the installation gap (5).

2. The installation structure of a limit switch sensor according to claim 1, characterized in that: The elastic members are provided in two groups, and the two groups of elastic members are symmetrically arranged on opposite sides of the limit switch sensor.

3. The installation structure of a limit switch sensor according to claim 1, characterized in that: The elastic member comprises: A box-type module (6) is arranged on the base (1) and is provided with a first through hole along the extension and contraction direction of the elastic member; A positioner (7) is disposed on the load plate (3) and is provided with a second through hole along the extension direction of the center line of the first through hole; An optical axis (8) is arranged between the box-type module (6) and the positioner (7), and has limiting portions (11) at both ends thereof respectively penetrating the first through hole and the second through hole; The spring (9) is arranged on the optical axis (8), and two ends thereof are respectively in contact with the opposite surfaces of the box-type module (6) and the positioner (7).

4. The installation structure of a limit switch sensor according to claim 3, characterized in that: The box-type module (6) is detachably mounted on the base (1); And / or, the positioner (7) is detachably mounted on the load plate (3).

5. The installation structure of a limit switch sensor according to claim 3, characterized in that: At least one end of the optical axis (8) contracts inwardly to form a step surface, and a thread groove (10) is provided on the step surface. The thread groove (10) is threadedly connected to the limiting portion (11) on the corresponding side to adjust the deformation amount of the installation gap (5).

6. The installation structure of a limit switch sensor according to claim 1, characterized in that: The deformation amount of the installation gap (5) is greater than or equal to the pre-travel of the limit switch sensor.

7. The installation structure of a limit switch sensor according to claim 1, characterized in that: The mounting portion (2) is provided with a plurality of groups of mounting holes (12) arranged side by side along the expansion and contraction direction of the elastic member.

8. The installation structure of a limit switch sensor according to claim 1, characterized in that: The base (1) and the load plate (3) are both forged aluminum alloy plates.

9. A method for installing a limit switch sensor, characterized in that: The limit switch sensor is installed by using the installation structure described in any one of claims 1 to 8, and the installation method comprises the following steps: The base (1) or the load plate (3) is installed at a preset position toward the object to be measured, so that the telescopic direction of the telescopic member is consistent with the movement direction of the object to be measured; The limit switch sensor is mounted on the mounting portion (2), and the pre-travel of the limit switch sensor is adjusted to within a preset range.

10. A method for installing a limit switch sensor according to claim 9, characterized in that: The preset position is arranged on the stationary part or the moving part.

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