A pressing travel switch and its travel adjustment method

Abstract

The present invention belongs to the technical field of manufacturing push switches, and specifically relates to a push travel switch and a travel adjustment method thereof. It includes a housing, in which a micro switch is fixedly arranged. Above the micro switch in the housing, there is a pressing member. The outer side wall of the pressing member is vertically slidably connected to the inner side wall of the housing. A chute is horizontally arranged on the lower surface of the pressing member, and both ends of the chute extend outside the pressing member. A sliding block that slides on the length direction line of the chute is arranged in the chute. A number of steps are sequentially arranged on the lower surface of the sliding block along the axis direction of the chute, and the height difference between two adjacent steps is 0.1 mm. Two coaxial through holes are arranged on the side wall of the housing. The lower surface of the sliding block abuts against the top end of the pressing part (14) of the micro switch, solving the problem that after the micro switch is assembled in the housing of the travel switch, the sum of the height error of the micro switch and the height error of the pressing member of the travel switch will exceed the height error range of the whole travel switch.

Description

Technical Field

[0001] The present invention belongs to the technical field of manufacturing push switches, and specifically relates to a push travel switch and a travel adjustment method thereof. Background Art

[0002] Currently, when manufacturing travel switches, in order to pursue aesthetics and uniformity, the height of the upper surface of the pressing member of the travel switch needs to be flush with the upper surface of the outer housing of the travel switch. However, during the manufacturing process of the pressing portion of the travel switch, there is an allowable error device in the manufacturing of the pressing member. Similarly, the height of the pressing portion of the micro switch inside the travel switch also has an error value. As a result, after the micro switch is assembled into the outer housing of the travel switch, the sum of the height error of the micro switch and the height error of the pressing member of the travel switch will exceed the overall height error of the travel switch, thereby affecting the aesthetics and uniformity of the travel switch. Summary of the Invention

[0003] Aiming at the shortcomings of the prior art, the present invention designs a push travel switch and a travel adjustment method thereof by adopting a method of arranging a sliding block with several steps on its lower surface in the housing of the travel switch to cooperate with the pressing portion of the micro switch. It can adjust the relationship between the height error of the pressing portion of the micro switch and the height error of the pressing member of the entire travel switch according to the actual situation during the assembly process of the travel switch, and solves the problem that after the micro switch is assembled into the outer housing of the travel switch, the sum of the height error of the micro switch and the height error of the pressing member of the travel switch will exceed the overall height error range of the travel switch.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A push travel switch, comprising a housing, a micro switch is fixedly arranged in the housing, a pressing member is arranged directly above the micro switch in the housing, the outer side wall of the pressing member is vertically slidably connected with the inner side wall of the housing, a chute is transversely arranged on the lower surface of the pressing member, both ends of the chute extend outside the pressing member, a sliding block that slides on the length direction line of the chute is arranged in the chute, several steps are sequentially arranged on the lower surface of the sliding block along the axis direction of the chute, the height difference between two adjacent steps is 0.1 mm, two coaxial through holes are arranged on the side wall of the housing, the through holes are coaxial with the chute, and the lower surface of the sliding block abuts against the top end of the pressing portion of the micro switch.

[0006] Preferably, a telescopic limiting member is provided directly above the pressing portion on the pressing member. The lower end of the telescopic limiting member extends into the sliding groove. Dented grooves that cooperate with the telescopic limiting member are provided on the upper surface of the sliding block corresponding to each of the steps. The shape of the dented grooves is conical, and the bottom of the dented grooves is the apex of the conical shape.

[0007] Preferably, the lower surface of the telescopic limiting member is an arc-shaped structure.

[0008] Preferably, the telescopic limiting member includes a limiting pin. The lower end of the limiting pin cooperates with the dented groove. A cavity is provided on the lower surface of the pressing member corresponding to the limiting pin. The upper section of the limiting pin extends into the cavity, and a spring is connected between the inner top wall of the cavity and the top end of the limiting pin.

[0009] Preferably, the projection of the upper surface of the pressing portion on the lower surface of the pressing member is within the sliding groove.

[0010] Preferably, rib strips parallel to the axis of the sliding groove are provided on the side wall of the sliding groove. Grooves that are slidably connected to the rib strips are provided on the side wall of the sliding block. The lower surface of the sliding block is located outside the sliding groove.

[0011] A method for adjusting the stroke of the above-mentioned pressing travel switch

[0012] 1) When the height of the pressing portion of the micro switch during manufacturing is greater than the preset height of the pressing portion, find the through hole at one end where there is a gap between the lower surface of the housing facing the sliding block and the upper surface of the pressing portion of the micro switch; then insert a strip-shaped hard jig with a cross-sectional area smaller than the area of the through hole into the through hole at one end where there is a gap between the lower surface of the housing facing the sliding block and the upper surface of the pressing portion of the micro switch to push the sliding block until the sliding block is pushed to the step directly above the pressing portion of the micro switch and just contacts the upper surface of the pressing portion of the micro switch in the normal state.

[0013] 2) When the height of the pressing portion of the micro switch during manufacturing is less than the preset height of the pressing portion, find the through hole at one end where there is a gap between the lower surface of the housing facing away from the sliding block and the upper surface of the pressing portion of the micro switch; then insert a strip-shaped hard jig with a cross-sectional area smaller than the area of the through hole into the through hole at one end where there is a gap between the lower surface of the housing facing away from the sliding block and the upper surface of the pressing portion of the micro switch to push the sliding block until the sliding block is pushed to the step directly above the pressing portion of the micro switch and just contacts the upper surface of the pressing portion of the micro switch in the normal state.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The present invention designs a push travel switch and its travel adjustment method by arranging a sliding block with several steps on its lower surface in the housing of the travel switch to cooperate with the pressing part of the micro switch. This can adjust the relationship between the height error of the pressing part of the micro switch and the height error of the pressing part of the entire travel switch during the assembly process of the travel switch, and solves the problem that after the micro switch is assembled in the housing of the travel switch, the sum of the height error of the micro switch and the height error of the pressing part of the travel switch will exceed the height error range of the entire travel switch.

[0016] 2. Through the arranged telescopic limiting member, after the sliding block is pushed to slide, the lower end of the telescopic limiting member enters the recessed groove, playing a role in limiting the sliding block and preventing the sliding block from sliding when the force applied to the sliding block is insufficient, for example, when the housing shakes or tilts, the sliding block may slide.

[0017] 3. In the present invention, ribs parallel to the axis of the chute are provided on the side wall of the chute, and grooves slidably connected to the ribs are provided on the side wall of the sliding block. The lower surface of the sliding block is located outside the chute. In this way, when manufacturing the micro switch, it is not necessary to consider the area of the upper surface of the pressing part, as long as it is ensured that the micro switch can be installed in the housing. Since the lower surface of the sliding block is located outside the chute, the upper surface of the pressing part of the micro switch can always contact the lower surface of the sliding block, reducing the manufacturing limiting conditions, and thus can improve the production efficiency to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is Figure 1 a schematic structural diagram after removing the housing;

[0020] Figure 3 is Figure 2 a schematic structural diagram after separating the sliding block in;

[0021] Figure 4 is Figure 2 a sectional view of;

[0022] Figure 5 is a schematic diagram for adjusting the travel of the push travel switch.

[0023] Wherein, 1. Housing; 2. Micro switch; 3. Pressing part; 4. Chute; 5. Sliding block; 6. Step; 7. Through hole; 8. Recessed groove; 9. Limit pin; 10. Cavity; 11. Spring; 12. Rib; 13. Groove; 14. Pressing part; 15. Strip-shaped hard jig. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] See Figures 1-5 As shown, a push travel switch includes a housing 1. A micro switch 2 is fixedly arranged in the housing 1. Above the micro switch 2 in the housing 1, there is a pressing member 3. The outer side wall of the pressing member 3 is vertically slidably connected to the inner side wall of the housing 1. A chute 4 is horizontally arranged on the lower surface of the pressing member 3. Both ends of the chute 4 extend outside the pressing member 3. A sliding block 5 that slides on the length direction line of the chute 4 is arranged in the chute 4. A plurality of steps 6 are sequentially arranged on the lower surface of the sliding block 5 along the axis direction of the chute 4. The height difference between two adjacent steps 6 is 0.1 mm. Two coaxial through holes 7 are arranged on the side wall of the housing 1. The through holes 7 are coaxial with the chute 4. The lower surface of the sliding block 5 abuts against the top end of the pressing part 14 of the micro switch 2.

[0025] In this embodiment, during manufacturing, directly manufacture the height of the pressing member 3 on the housing within the error range of the entire push travel switch according to the process requirements. Then, during the assembly process, no matter what the height value of the pressing part 14 of the micro switch 2 is made, a strip-shaped hard jig 15 is inserted into the through hole 7 to push the sliding block 5 to slide, so that the lower surface of the sliding block 5 can contact the upper surface of the pressing part 14 of the micro switch 2 in the normal state. In this way, the relationship between the height error of the pressing part 14 of the micro switch 2 and the height error of the pressing member 3 of the entire travel switch can be adjusted according to the actual situation during the assembly process of the travel switch.

[0026] As a preferred way, a telescopic limiting member is arranged above the pressing part 14 on the pressing member 3. The lower end of the telescopic limiting member extends into the chute 4. Dented grooves 8 that cooperate with the telescopic limiting member are arranged on the upper surface of the sliding block 5 corresponding to each step 6. The shape of the dented groove 8 is conical, and the bottom of the dented groove 8 is the conical apex of the conical shape. By arranging the telescopic limiting member, after pushing the sliding block 5 to slide, the lower end of the telescopic limiting member enters the dented groove 8 to play a role in limiting the sliding block 5, preventing the sliding block 5 from sliding when the force applied to the sliding block 5 is insufficient. For example, when the housing 1 shakes or tilts, the sliding block 5 may slide.

[0027] As a preferred way, the lower surface of the telescopic limiting member is of an arc-shaped structure. The arc-shaped structure can cooperate with the conical shape of the dented groove 8, so that when the sliding block 5 is pushed, the telescopic limiting member can easily slide out of the dented groove 8.

[0028] As a preferred embodiment, the telescopic limiting member includes a limiting pin 9, the lower end of the limiting pin 9 is engaged with the recessed groove 8, a cavity 10 is provided on the lower surface of the pressing member 3 corresponding to the limiting pin 9, the upper section of the limiting pin 9 extends into the cavity 10, and a spring 11 is connected between the inner top wall of the cavity 10 and the top end of the limiting pin 9.

[0029] As a preferred embodiment, the projection of the upper surface of the pressing portion 14 on the lower surface of the pressing member 3 is within the sliding groove 4.

[0030] As a preferred embodiment, rib strips 12 parallel to the axis of the sliding groove 4 are provided on the side wall of the sliding groove, grooves 13 slidably connected to the rib strips 12 are provided on the side wall of the sliding block 5, and the lower surface of the sliding block 5 is located outside the sliding groove 4. In this way of setting, when manufacturing the microswitch 2, it is not necessary to consider the area of the upper surface of the pressing portion 14, as long as it is ensured that the microswitch 2 can be installed in the housing 1. Since the lower surface of the sliding block 5 is located outside the sliding groove 4, the upper surface of the pressing portion 14 of the microswitch 2 can always contact the lower surface of the sliding block 5.

[0031] A method for adjusting the stroke of the above-mentioned pressing travel switch, as Figure 5 shown

[0032] 1) When the height of the pressing portion 14 of the manufactured microswitch is greater than the preset height of the pressing portion 14, find the through hole 7 at one end of the housing 1 facing the lower surface of the sliding block 5 and the upper surface of the pressing portion 14 of the microswitch 2 where there is a gap; then insert a strip-shaped hard jig 15 with a cross-sectional area smaller than the area of the through hole 7 into the through hole 7 at one end facing the lower surface of the sliding block 5 and the upper surface of the pressing portion 14 of the microswitch 2 where there is a gap to push the sliding block 5 until the sliding block 5 is pushed to the step 6 directly above the pressing portion 14 of the microswitch 2 just contacts the upper surface of the pressing portion 14 of the microswitch 2 in the normal state;

[0033] 2) When the height of the pressing portion 14 of the manufactured microswitch 2 is less than the preset height of the pressing portion 14, find the through hole 7 at one end of the housing 1 facing away from the lower surface of the sliding block 5 and the upper surface of the pressing portion 14 of the microswitch 2 where there is a gap; then insert a strip-shaped hard jig 15 with a cross-sectional area smaller than the area of the through hole into the through hole 7 at one end facing the lower surface of the sliding block 5 and the upper surface of the pressing portion 14 of the microswitch 2 where there is a gap to push the sliding block 5 until the sliding block 5 is pushed to the step 6 directly above the pressing portion 14 of the microswitch 2 just contacts the upper surface of the pressing portion 14 of the microswitch 2 in the normal state.

Claims

1. A push travel switch, characterized in that, It includes a housing (1), inside which a microswitch (2) is fixedly arranged. Above the microswitch (2) inside the housing (1), there is a pressing member (3). The outer sidewall of the pressing member (3) is vertically slidably connected to the inner sidewall of the housing (1). Horizontally arranged on the lower surface of the pressing member (3) is a sliding groove (4), and both ends of the sliding groove (4) extend outside the pressing member (3). Inside the sliding groove (4), there is a sliding block (5) that slides along the length direction line of the sliding groove (4). On the lower surface of the sliding block (5), several steps (6) are successively arranged along the axis direction of the sliding groove (4), and the height difference between two adjacent steps (6) is 0.1 mm. On the sidewall of the housing (1), there are two coaxial through holes (7), and the through holes (7) are coaxial with the sliding groove (4). The lower surface of the sliding block (5) abuts against the top end of the pressing part (14) of the microswitch (2). On the pressing member (3), directly above the pressing part (14), there is an expansion and contraction limiting member. The lower end of the expansion and contraction limiting member extends into the sliding groove (4). On the upper surface of the sliding block (5), at positions corresponding to each of the steps (6), there are concave grooves (8) that cooperate with the expansion and contraction limiting member. The shape of the concave groove (8) is conical, and the bottom of the concave groove (8) is the conical apex of the conical shape. During the assembly process, a bar-shaped rigid jig (15) is inserted into the through hole (7) to push the sliding block (5) to slide, so that the lower surface of the sliding block (5) can contact the upper surface of the pressing part (14) of the microswitch (2) in the normal state.

2. The push travel switch according to claim 1, wherein, The lower surface of the expansion and contraction limiting member is of an arc-shaped structure.

3. The push travel switch according to claim 1, wherein The expansion and contraction limiting member includes a limit pin (9). The lower end of the limit pin (9) cooperates with the concave groove (8). On the lower surface of the pressing member (3), at the position corresponding to the limit pin (9), there is a cavity (10). The upper section of the limit pin (9) extends into the cavity (10), and between the inner top wall of the cavity (10) and the top end of the limit pin (9), there is a spring (11) connected.

4. A push travel switch according to claim 1, characterized in that, The projection of the upper surface of the pressing part (14) on the lower surface of the pressing member (3) is inside the sliding groove (4).

5. A push travel switch according to claim 1, characterized in that On the sidewall of the sliding groove, there are rib strips (12) parallel to the axis of the sliding groove (4). On the sidewall of the sliding block (5), there are grooves (13) that are slidably connected to the rib strips (12), and the lower surface of the sliding block (5) is located outside the sliding groove (4).

6. The travel adjustment method of the pressing travel switch according to any one of claims 1 - 5, characterized in that: 1) When the height of the pressing part (14) of the microswitch is greater than the preset height of the pressing part (14), find the through hole (7) at one end where there is a gap between the lower surface of the housing (1) facing the sliding block (5) and the upper surface of the pressing part (14) of the microswitch (2); then insert a strip-shaped rigid jig (15) with a cross-sectional area smaller than the area of the through hole (7) into the through hole (7) at one end where there is a gap between the lower surface of the housing (1) facing the sliding block (5) and the upper surface of the pressing part (14) of the microswitch (2) to push the sliding block (5) until the step (6) located directly above the pressing part (14) of the microswitch (2) just contacts the upper surface of the pressing part (14) of the microswitch (2) in the normal state; 2) When the height of the pressing part (14) of the microswitch (2) is less than the preset height of the pressing part (14), find the through hole (7) at one end where there is a gap between the lower surface of the housing (1) facing away from the sliding block (5) and the upper surface of the pressing part (14) of the microswitch (2); then insert a strip-shaped rigid jig (15) with a cross-sectional area smaller than the area of the through hole into the through hole (7) at one end where there is a gap between the lower surface of the housing (1) facing the sliding block (5) and the upper surface of the pressing part (14) of the microswitch (2) to push the sliding block (5) until the step (6) located directly above the pressing part (14) of the microswitch (2) just contacts the upper surface of the pressing part (14) of the microswitch (2) in the normal state.

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