Assembly device

Abstract

The utility model provides an assembling device, which is used for installing a limit switch on a bearing plate through a connecting piece, and comprises a bottom plate and two limit columns, a bearing plate clamping position used for clamping the bearing plate is formed on the bottom plate, a long-strip-shaped hole is formed in the bearing plate, and the two limiting columns are connected to the bottom plate, penetrate through the long-strip-shaped hole and are arranged at the two ends of the long-strip-shaped hole respectively; limiting switch clamping positions are formed in the positions, on the two sides of each limiting column, of the bottom plate, contacts of the limiting switches on the limiting switch clamping positions on the two sides of each limiting column abut against the side face of the limiting column, and the thickness of each limiting column is the sum of the compression amount of the contacts of the two limiting switches on the two sides. And penetrating holes through which the connecting pieces can penetrate are formed in the positions, corresponding to the connecting pieces, of the bottom plate. According to the utility model, not only can the compression amount of the limit switch be accurately positioned, but also the assembly efficiency can be obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of limit switch installation, especially an assembling device. BACKGROUND

[0002] The limit switch is an electrical control element, which is driven by the displacement of a mechanical device to actuate the switch, so as to realize the connection or disconnection of the circuit to control the position or stroke of the mechanical movement. When installing the limit switch, the accurate control of the compression amount is crucial. Too large or too small compression amount may cause the normally open or normally closed contact of the limit switch to fail to act effectively, thereby causing signal transmission errors.

[0003] At present, in the related art, the compression amount of the limit switch is usually judged by the personal experience of the installer. However, the compression amount controlled by the manual experience has a large error, which may cause the normally open or normally closed contact of the limit switch to fail to act normally after installation, such as the limit switch failing to act reliably due to too small compression amount, or the switch being damaged due to too large compression amount. This not only has serious safety hazards, but also causes the installation of the limit switch to be reworked, wasting a large amount of manual time. In addition, the service life of the limit switch may be shortened due to too large compression amount. SUMMARY

[0004] Therefore, the utility model provides an assembling device to at least solve part of the above problems.

[0005] The embodiment of the present application provides an assembling device for installing a limit switch to a bearing plate through a connecting piece. The assembling device comprises a bottom plate and two limiting columns. The bottom plate is formed with a bearing plate clamping position for clamping the bearing plate. The bearing plate is provided with a long strip-shaped hole. The two limiting columns are connected to the bottom plate and are arranged in the long strip-shaped hole and are respectively arranged at two ends of the long strip-shaped hole. The bottom plate is formed with a limit switch clamping position on each side of the limiting column along the width direction of the long strip-shaped hole. The contact of the limit switch on each side of the limiting column is in abutment with the side surface of the limiting column. The thickness of each limiting column in the width direction of the long strip-shaped hole is the sum of the compression amounts of the contacts of the two limit switches on both sides. The bottom plate is provided with a through hole corresponding to the connecting piece at a position corresponding to the connecting piece.

[0006] Further, in the above-mentioned assembling device, each limiting column is cylindrical. The long strip-shaped hole is a long circular hole. The two limiting columns are respectively abutted to the semicircular holes at the two ends of the long circular hole.

[0007] Further, in the above-mentioned assembling device, the side surface of the limiting column for abutting with the contacts of the limit switches on both sides is a plane.

[0008] Further, in the above assembly device, further comprising: two vertical plates and six limit pieces connected to the bottom plate; wherein the two vertical plates are connected to the bottom plate and placed on both sides of the limit post, and parallel to the line connecting the two limit posts; three limit pieces are arranged between each vertical plate and the limit post, and each limit piece is arranged staggered with the limit post; the area surrounded by the adjacent two limit pieces and the corresponding vertical plate is the limit switch clamping position, the vertical plate is used to abut the rear side of the limit switch, the adjacent two limit pieces are used to abut the left side and the right side of the limit switch respectively, and the contact is arranged on the front side of the limit switch; the area between the limit pieces on both sides of the limit post is the clamping position of the bearing plate, and the limit piece is used to abut the bearing plate.

[0009] Further, in the above assembly device, the three limit pieces between each vertical plate and the limit post are arranged on a straight line and equidistantly arranged, and the straight line is parallel to the two vertical plates.

[0010] Further, in the above assembly device, the distance between the adjacent two limit pieces is 30.5mm, the distance between the vertical plate and the limit post is 40mm, and the thickness of the limit post in the width direction of the long strip-shaped hole is 5.5mm.

[0011] Further, in the above assembly device, the bottom plate is provided with four long strip-shaped mounting holes perpendicular to the long strip-shaped hole of the bearing plate, and each long strip-shaped mounting hole is arranged on each long strip-shaped mounting hole.

[0012] Further, in the above assembly device, the connecting piece is a bolt and a nut, and the width of the long strip-shaped mounting hole is greater than the outer diameter of the bolt cap of the bolt.

[0013] Further, in the above assembly device, the width of the long strip-shaped mounting hole is 7mm.

[0014] As can be seen from the above scheme, the assembly device in the embodiment of the present application can install the limit switch on the bearing plate. During installation, the limit switch is accurately positioned through the limit switch clamping position, and the compression amount of the limit switch can also be accurately controlled through the limit post, thereby ensuring reliable action of the limit switch, eliminating the risk of rework caused by improper compression amount (too large or too small), and improving the assembly efficiency. In addition, the problem of shortening the service life of the limit switch caused by excessive compression amount is also avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] The preferred embodiments of the present application will be described in detail below with reference to the drawings, so that the above and other features and advantages of the present application can be more clearly understood by those skilled in the art. In the drawings:

[0016] Figure 1 A structural schematic view of a limit switch suitable for the embodiments of the present application;

[0017] Figure 2 A three-dimensional schematic view of a mounting structure of a limit switch and a bearing plate suitable for the embodiments of the present application;

[0018] Figure 3 A planar schematic view of a mounting structure of a limit switch and a bearing plate suitable for the embodiments of the present application;

[0019] Figure 4 A side schematic view of a mounting structure of a limit switch and a bearing plate suitable for the embodiments of the present application;

[0020] Figure 5 A three-dimensional structural schematic view of an assembling device provided by the embodiments of the present application;

[0021] Figure 6 A planar structural schematic view of an assembling device provided by the embodiments of the present application;

[0022] Figure 7 A side structural schematic view of an assembling device provided by the embodiments of the present application;

[0023] Figure 8 A three-dimensional structural schematic view of an assembling device for mounting a limit switch and a bearing plate provided by the embodiments of the present application;

[0024] Figure 9 A planar structural schematic view of an assembling device for mounting a limit switch and a bearing plate provided by the embodiments of the present application;

[0025] Figure 10 A bottom view of an assembling device for mounting a limit switch and a bearing plate provided by the embodiments of the present application;

[0026] In the drawings, the reference signs are as follows:

[0027] Limit switch 100; body 110; wiring cable 120; contact 130; rear side 140; left side 150; right side 160; front side 170; connecting hole 180, bearing plate 200; long strip-shaped hole 210; connecting piece 220; assembling device 300; bottom plate 310; bearing plate clamping position 311; limit switch clamping position 312; long strip-shaped mounting hole 313; two limiting columns 320; side surface 321; vertical plate 330; limiting piece 340. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions and advantages of this utility model clearer, the following embodiments are provided to further illustrate this utility model in detail.

[0029] The following describes the embodiments of this application in detail, taking the installation of limit switches applied to surge arresters as an example.

[0030] See Figure 1 , Figure 1 The limit switch 100 shown includes a body 110, four wiring cables 120 connected to the body 110, and contacts 130. The wiring cables 120 and contacts 130 are respectively connected to opposite ends of the body 110. Figure 1 (See the upper and lower ends shown). The wiring cable 120 is used to connect to the circuit, and the contact 130 is used to perform the switching action. When the contact 130 is compressed, the limit switch 100 is activated.

[0031] It is understood that the switching state of the surge arrester can be controlled by an operating lever. When the operating lever moves to the first position, the surge arrester is in the open state; when the operating lever moves to the second position, the surge arrester switches to the closed state. This control process can be implemented by a control mechanism that can control the operating lever to switch between the first and second positions. To precisely control the movement position of the operating lever, a limit mechanism can also be set, i.e., limit switches are installed in both the first and second positions (for example, using...). Figure 1 The limit switch shown is a micro switch. When the operating lever reaches the first and second positions, it can activate the corresponding limit switch, causing it to move. The activation of the limit switch will be fed back to the control mechanism, thereby ensuring that the travel of the operating lever is accurately controlled.

[0032] Specifically, see Figures 2 to 4 The limiting mechanism includes a support plate 200 and four limit switches 100. The support plate 200 has an elongated hole 210 through which an operating rod passes and can slide relative to each other. When the operating rod is at one end of the elongated hole 210, it corresponds to the first position and the second position of the operating rod, respectively. Two limit switches 100 are respectively installed opposite each other at both ends of the elongated hole 210, and the contacts 130 of the two limit switches 100 are arranged opposite each other. When the operating rod contacts the contacts of the two limit switches 100, the operating rod pushes the contacts of the two limit switches 100 to compress, the two limit switches 100 are activated, and the operating rod stops moving.

[0033] In practice, the limit switch 100 can be mounted on the support plate 200 via a connector 220 (e.g., bolts and nuts).

[0034] It should be noted that the above is only an example of using the operating lever to control the surge arrester switch. In actual implementation, the operating lever can also be used in other instruments. This embodiment does not limit the specific application.

[0035] See Figures 5 to 10 An assembly device 300 according to one embodiment of this application includes a base plate 310 and two limit posts 320. The assembly device 300 is used to mount four limit switches 100 to a support plate 200 via connectors 220.

[0036] The base plate 310 has a bearing plate engaging position 311 for engaging the bearing plate 200. The bearing plate 200 has an elongated hole 210. Both limiting posts 320 are connected to the base plate 310. Specifically, one end of the limiting post 320 is connected to the bearing plate 320, and the other end is a free end.

[0037] When the support plate 200 is installed in the snap-fit ​​position 311, the two limiting posts 320 pass through the elongated hole 210 and are respectively placed at both ends of the elongated hole 210, that is, the two limiting posts 320 correspond to the first position and the second position of the operating rod respectively.

[0038] The base plate 310 is positioned along the width of the elongated hole 210 at each limiting post 320. Figure 9 Both sides of the limit switch latching position 312 (as shown in direction A) are formed. The contact 130 of the limit switch 100 on the limit switch latching position 312 on both sides of each limit post 320 abuts against the side 321 of the limit post 320. The thickness of each limit post 320 in the width direction of the elongated hole 210 is the sum of the compression of the two limit switch 100 contacts on both sides.

[0039] In other words, when the limit switch 100 is installed on the limit switch latching position 312, the contact 130 of the limit switch 100 is in a compressed state, and the thickness of the elongated hole 210 is the sum of the compression of the contacts 130 of the two limit switches 100.

[0040] For example, see Figure 8 and Figure 9 Limit switch latching positions 311 are formed on both sides of the limit post 320 placed above. Each limit switch latching position 311 is equipped with a limit switch 100. The contacts 130 of the limit switch 100 abut against the side 321 of the limit post 320. The thickness d of the limit post 320 in direction A is the sum of the compression of the contacts 130 of the two limit switches 100, that is, the thickness d is the distance between the contacts 130 of the two limit switches 100 after compression.

[0041] For example, the limit switch of model LXW20-11M has a contact compression range of 2.5±1mm, and the thickness d of the limit post 320 can be 5.5mm, i.e., the compression of each limit switch 100 is 2.75mm.

[0042] The bottom plate 310 has a through hole corresponding to the connecting piece 220, through which the connecting piece 220 can pass. Specifically, each limit switch 100 has two connecting holes 180 (see Figure 1 ), and correspondingly, the bearing plate 100 has two mounting holes corresponding to each limit switch 100 on both sides of the long hole 210, and the connecting piece 220 passes through the mounting hole and the connecting hole 180 to fix the limit switch 100 on the bearing plate 200. Since the connecting piece 220 can pass through the through hole on the bottom plate 310, the bearing plate 200 on which the limit switch 100 is installed can be taken off from the bottom plate 310 of the assembly device 100.

[0043] When the operating rod of the lightning arrester moves to the position where the upper limit post 320 is located (see Figure 8 ), the contacts of the limit switches 100 on both sides of the limit post 320 are compressed, the limit switches 100 act, and a feedback signal is sent to the control mechanism of the operating rod, and the control mechanism controls the operating rod to stop moving.

[0044] Similarly, the limit posts 320 located in the middle and below Figure 8 and Figure 9 have the same structure as the above-described limit posts, and thus are not described in detail.

[0045] When the operating rod moves to the position where the lower limit post 320 is located, the limit switches 100 on both sides of the limit post 320 are actuated, and the limit switches 100 send a feedback signal to the control mechanism to stop the operating rod from moving.

[0046] It can be seen that the four limit switches 100 can limit two positions of the operating rod.

[0047] The assembly device in the embodiment of the utility model can install the limit switch 100 on the bearing plate 200. During installation, the limit switch 100 is accurately positioned by the limit switch clamping position 312, and the compression of the limit switch 100 can also be accurately controlled by the limit post 320, so that the reliable action of the limit switch 100 can be ensured, the rework risk caused by improper compression (too large or too small) is eliminated, and the assembly efficiency is improved. In addition, the problem of shortening the service life of the limit switch 100 caused by excessive compression is also avoided.

[0048] In some embodiments, each limit post 320 is cylindrical, and the long strip-shaped hole 210 is a long circular hole, i.e., the two ends of the long strip-shaped hole are semicircular, and the two limit posts 320 are respectively abutted to the semicircular holes at the two ends of the long circular hole, so that the limit posts 320 are in more sufficient contact with the two ends of the long strip-shaped hole 210, thereby ensuring that the operating rod can be in more sufficient contact with the two ends of the long strip-shaped hole 210, improving the stability of the limit post 320, and more accurately controlling the compression amount of the limit switch 100.

[0049] In some embodiments, referring to Figure 5 , Figure 8 and Figure 9 , the side surface 321 of the limit post 320 for abutting against the contact 130 of the limit switch 100 on both sides is a plane, which is vertically arranged with the contact 130 of the limit switch 100, so that the contact 130 of the limit switch 100 is better abutted against the limit post 320, enhancing the overall stability of the limit switch 100, and thereby more accurately controlling the compression amount of the limit switch 100.

[0050] Referring to Figures 5 to 9 , in some embodiments, further comprising two vertical plates 330 and six limit pieces 340. Among them, the two vertical plates 330 and the six limit pieces 340 are connected to the bottom plate 310. The two vertical plates 310 are arranged on both sides of the limit post 320 (along the width direction A of the long strip-shaped hole 210), and the connecting line of the two limit posts 320 is parallel to the two vertical plates 310. In one example, the vertical plate 310, the length direction axis of the long strip-shaped hole 210, and the connecting line of the two limit posts 320 are all arranged in parallel.

[0051] Referring to Figure 9 , three limit pieces 340 are arranged between each vertical plate 330 and the limit post 320, and each limit piece 340 is arranged in a staggered manner with each limit post 320; the area surrounded by the two adjacent limit pieces 340 and the corresponding vertical plate 330 along the length direction of the long strip-shaped hole 210 is a limit switch contact position 312, and the vertical plate 330 is used for abutting against the rear side 140 of the limit switch 100 (for the limit switch whose four wiring cables 120 extend out of the rear side 140, the vertical plate 330 abuts against the wiring cable 120), and the two adjacent limit pieces 340 are used for abutting against the left side 150 and the right side 160 of the limit switch, and the contact 130 is arranged on the front side 170 of the limit switch 100. Among them, the rear side 140, the left side 150, the right side 160 and the front side 170 are all relative to the state shown in Figure 8 . When the limit switch 100 is placed in the limit switch contact position 312, the contact 130 has the required compression amount for action.

[0052] The area between the limiting members 340 on both sides of the limiting column 320 is a clamping position 311 of the bearing plate, and the limiting members 340 are used to abut the side surface of the bearing plate 200.

[0053] In some embodiments, the three limiting members 340 between each vertical plate 330 and the limiting column 320 are arranged on a straight line and are equidistantly arranged, and the straight line is parallel to the two vertical plates 330. The distance between the limiting column 320 and the adjacent four limiting members 340 can be equal.

[0054] In one example, referring to Figure 6 For the limiting switch of the LXW20-11M type, the distance e between the two adjacent limiting members 340 along the length direction of the vertical plate 330 can be 30.5 mm, so as to be matched with the width 30 mm of the limiting switch 100 in the direction. The distance f between the vertical plate 330 and the side surface 321 of the limiting column 320 can be 40 mm, so as to be matched with the length 40 mm of the limiting switch 100 in the direction. The thickness d of the limiting column 320 can be 5.5 mm, and by limiting the 5.5 mm and 40 mm, the compression amount of the limiting switch 100 is controlled to be 2.75.

[0055] Referring to Figure 6 and Figure 10 In some embodiments, the bottom plate 310 is provided with four long strip-shaped mounting holes 313 perpendicular to the long strip-shaped holes of the bearing plate 200, and each through hole is arranged on each long strip-shaped mounting hole 313, that is, the connecting member 220 used for mounting the limiting switch 100 to the bearing plate 200 can be arranged in the long strip-shaped mounting hole 313.

[0056] In a specific implementation, the connecting member 220 is a bolt and a nut, and the width g of the long strip-shaped mounting hole 313 is greater than the outer diameter of the bolt cap. For example, the width g of the long strip-shaped mounting hole 313 can be 7 mm, which is greater than the outer diameter of the bolt cap. After the limiting switch 100 is mounted, the bolt cap can be taken out of the long strip-shaped mounting hole 313 when the bearing plate 200 and the limiting switch 100 are taken out of the assembly device 300.

[0057] In the embodiment, the bolt cap used for fixing the limiting switch 100 can be fixed by using a wrench, and the efficiency of assembly is improved.

[0058] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An assembly device for mounting a limit switch (100) to a carrier plate (200) by means of a connecting piece (220), characterized in that The assembly device comprises: a bottom plate (310) and two limiting columns (320); wherein, the bottom plate (310) is formed with a bearing plate clamping position (311) for clamping a bearing plate (200), the bearing plate (200) is provided with an elongated hole (210), and the two limiting columns (320) are connected to the bottom plate (310) and pass through the elongated hole (210), and are respectively arranged at two ends of the elongated hole (210); the bottom plate (310) is formed with a limiting switch clamping position (312) on each side of the limiting column (320) along the width direction of the elongated hole (210), the contact (130) of the limiting switch (100) on each side of the limiting switch clamping position (312) of each limiting column (320) abuts against the side surface (321) of the limiting column (320), and the thickness of each limiting column (320) in the width direction of the elongated hole (210) is the sum of the compression amount of the contacts (130) of the two limiting switches on both sides; the bottom plate (310) is provided with a through hole corresponding to the connecting piece (220) at a position corresponding to the connecting piece (220), and the connecting piece (220) can pass through the through hole.

2. The assembly device according to claim 1, wherein, each limiting column (320) is cylindrical; the elongated hole (210) is an oblong hole; the two limiting columns (320) abut against semicircular holes at two ends of the oblong hole.

3. The assembly device according to claim 2, wherein, the side surface of the limiting column (320) for abutting against the contacts (130) of the limiting switches on both sides is a plane.

4. The assembly apparatus of any one of claims 1 to 3, wherein, Further comprising: two vertical plates (330) connected to the bottom plate (310) and six limiting pieces (340); wherein, the two vertical plates (330) are connected to the bottom plate and arranged on both sides of the limiting column (320), and are parallel to the connecting line of the two limiting columns (320); three limiting pieces (340) are arranged between each vertical plate (330) and the limiting column (320), and each limiting piece (340) is arranged in a staggered manner with each limiting column (320); the area surrounded by the two adjacent limiting pieces (340) and the corresponding vertical plate (330) is the limiting switch clamping position (312), the vertical plate (330) is used for abutting against the back side of the limiting switch (100), the two adjacent limiting pieces (340) are respectively used for abutting against the left side and the right side of the limiting switch, and the contact (130) is arranged on the front side of the limiting switch (100); the area between the limiting pieces (340) on both sides of the limiting column (320) is the bearing plate clamping position (311), and the limiting pieces (340) are used for abutting against the bearing plate (200).

5. The assembly device according to claim 4, wherein, Three limiting members (340) between each of the vertical plates (330) and the limiting post (320) are arranged on a straight line and equidistantly, and the straight line is parallel to the two vertical plates (330).

6. The assembling device of claim 4, wherein, The distance between two adjacent limiting members (340) is 30.5 mm, the distance between the vertical plate (330) and the limiting post (320) is 40 mm, and the thickness of the limiting post (320) in the width direction of the long strip-shaped hole is 5.5 mm.

7. The assembling device of any one of claims 1 to 3, wherein, The bottom plate (310) is provided with four long strip-shaped mounting holes (313) perpendicular to the long strip-shaped hole (210) of the bearing plate (200), and each of the penetrating holes is arranged on each of the long strip-shaped mounting holes (313).

8. The assembling device of claim 7, wherein, The connecting member (220) is a bolt and a nut, and the width of the long strip-shaped mounting hole (313) is greater than the outer diameter of the bolt cap of the bolt.

9. The assembling device of claim 8, wherein, The width of the long strip-shaped mounting hole (313) is 7 mm.

Images