Trigger fixing structure

Abstract

The utility model discloses a trigger fixing structure, which comprises a push rod, a trigger arranged at the end part of the push rod and the like, and is mainly characterized in that a mounting hole is arranged at the rear side of the trigger, a mounting groove laterally communicated with the mounting hole is arranged in the trigger, then the end part of the push rod is directionally arranged in the mounting hole to limit the rotation of the trigger relative to the push rod, and a buckle is arranged in the mounting groove. The buckle is clamped and fixed at the end part of the push rod in the mounting hole, so that the trigger can be prevented from being separated; meanwhile, a positioning bulge and a positioning groove which are positioned and assembled are respectively arranged between the end part of the push rod and the mounting hole, and the mounting height of the end part of the push rod which is directionally mounted in the mounting hole is limited by the positioning bulge and the positioning groove which are positioned and assembled; therefore, the trigger which is installed in place can be positioned in three directions, so that the trigger and the end part of the push rod can be prevented from loosening, inclining, breaking and falling off, the fixing strength is improved, the pulling-out force is improved, the trigger can bear high impact strength, the impact strength is increased, the structural reliability is better, and the service life is longer.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fixed structure, specifically a trigger fixed structure suitable for electric tool switch. BACKGROUND

[0002] The operation handle of the conventional hand-held electric tool switch can only be divided into trigger and push rod two parts for split assembling due to the structure, the electric tool switch used in the market adopts generally cylinder sleeve interference fixing, gourd buckle interference fixing and semicircle buckle fixing and the trigger with the fixing structure has small pull-off force and cannot bear large impact strength, when the electric tool switch is applied to high strength electric tools such as electric wrench, impact drill, electric hammer and electric grab, the trigger will be gradually loosened, skewed, broken and fallen off due to large vibration in work, thereby greatly shortening the service life. SUMMARY

[0003] The utility model provides a trigger fixed structure which can avoid trigger loosening, skewing and breaking, improve the fixing strength and pull-off force, bear high impact strength and has long service life.

[0004] The technical problem of the utility model is solved by the following technical scheme.

[0005] A trigger fixed structure, comprising a push rod and a trigger installed at the end of the push rod, the rear side of the trigger is provided with an installation hole, and the trigger is provided with an installation groove which is connected with the installation hole in a lateral direction; the end of the push rod is directionally installed in the installation hole and limits the rotation of the trigger relative to the push rod; a buckle is installed in the installation groove, and the buckle is clamped on the end of the push rod in the installation hole and limits the trigger from being separated.

[0006] Positioning convexes and positioning grooves which are positioned and matched are arranged between the end of the push rod and the installation hole, and the positioning height of the end of the push rod directionally installed in the installation hole is limited by the positioning convexes and the positioning grooves.

[0007] The positioning convexes are drum type ring convexes which are arranged on the outer circumferential surface of the end of the push rod in a circumferential direction, and the corresponding positioning grooves are drum type ring grooves which are arranged on the inner circumferential surface of the installation hole in a circumferential direction.

[0008] The end of the push rod is composed of a polygonal shaft and a circular shaft, the installation hole is composed of a polygonal hole and a circular hole, and positioning convexes and positioning grooves which are positioned and matched are arranged between the circular shaft and the circular hole.

[0009] The polygonal shaft is matched in the polygonal hole, and the end of the push rod is directionally installed in the installation hole.

[0010] The outer circumference of the circular shaft is provided with a circumferential groove, and the buckle is secured in the groove.

[0011] The push rod end is oriented into the mounting hole, and the slot is exposed in the mounting groove and flush with the buckle plane.

[0012] The mounting groove extends through both sides of the trigger and forms a lateral connection with the mounting hole.

[0013] Compared with the prior art, this utility model mainly features a mounting hole on the rear side of the trigger and a mounting groove inside the trigger that connects laterally to the mounting hole. The end of the push rod is then oriented into the mounting hole to restrict the rotation of the trigger relative to the push rod. A buckle is then inserted into the mounting groove and secured to the end of the push rod within the mounting hole to prevent the trigger from detaching. Simultaneously, a positioning protrusion and a positioning groove are provided between the end of the push rod and the mounting hole, respectively, to limit the installation height of the push rod end within the mounting hole. In this way, the trigger, once installed, achieves positioning in three directions, thus preventing loosening, misalignment, breakage, and detachment from the push rod end. This improves the fixing strength and pull-out force, while also enabling it to withstand high impact strength, resulting in increased impact resistance, better structural reliability, and a longer service life. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the present invention.

[0015] Figure 2 for Figure 1 The right view.

[0016] Figure 3 for Figure 1 A three-dimensional exploded view.

[0017] Figure 4 This is a cross-sectional view of the trigger.

[0018] Figure 5 for Figure 4 A bottom view.

[0019] Figure 6 This is a schematic diagram of the push rod structure (the buckle disengages from the slot). Detailed Implementation

[0020] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] like Figures 1-6 As shown, 1. push rod, 11. polygonal shaft, 12. round shaft, 13. positioning protrusion, 14. slot, 2. trigger, 21. pressing surface, 22. mounting hole, 221. polygonal hole, 222. round hole, 23. mounting groove, 24. positioning groove, 3. buckle.

[0022] A trigger retaining structure, such as Figures 1-3 As shown, this mainly relates to a trigger structure for a power tool switch, which includes a push rod 1 and a trigger 2, etc. The trigger is usually mounted on the end of the push rod, specifically on the front end of the push rod. This embodiment uses... Figure 1 The top side of the view shown represents the front end of the push rod or the front side of the trigger, while the bottom side represents the rear end of the push rod or the rear side of the trigger.

[0023] The trigger has a pressing surface 21 on its front side and a mounting hole 22 on its rear side. The trigger also has a mounting groove 23 that laterally connects to the mounting hole. Specifically, the mounting groove passes through both sides of the trigger 2 and forms a lateral connection with the mounting hole 22. At this point, the axis of the mounting groove 23 is perpendicular to the axis of the mounting hole 22. Therefore, when the push rod end is oriented into the mounting hole 22, the rotation of the trigger 2 relative to the push rod 1 will be restricted. Specifically, the push rod end is composed of a polygonal shaft 11 and a round shaft 12, with the round shaft located in front of the polygonal shaft. On the side, the corresponding mounting hole 22 is composed of a polygonal hole 221 and a round hole 222. When the polygonal shaft 11 is fitted into the polygonal hole 221, the push rod end can be oriented into the mounting hole 22. In actual use, the polygonal shaft 11 and polygonal hole 221 that are fitted together can be selected as regular hexagonal shaft and regular hexagonal hole, or regular octagonal shaft and regular octagonal hole. Therefore, the number of sides is not limited. As long as the polygonal shaft 11 and polygonal hole 221 can form an oriented fit and restrict the trigger 2 from rotating relative to the push rod 1, it is acceptable.

[0024] The outer circumferential surface of the circular shaft 12 is provided with a circumferential groove 14. The mounting groove 23 is fitted with a buckle 3, which is secured to the end of the push rod in the mounting hole 22, that is, in the groove 14 of the circular shaft 12, thus preventing the trigger 2 from disengaging. In this embodiment, the buckle 3 is an E-type buckle with a better locking effect. It can not only firmly lock the trigger 2 to prevent the trigger 2 from falling off during the working vibration of the power tool, but also increase the force-bearing area between the push rod 1 and the trigger 2 when the trigger 2 is subjected to accidental impact, thereby avoiding breakage and improving the fixing strength.

[0025] The push rod end and the mounting hole 22 are respectively provided with a positioning convex 13 and a positioning groove 24 in positioning fit, specifically, the positioning convex 13 and the positioning groove 24 in positioning fit are respectively arranged between the circular shaft 12 and the circular hole 222, the positioning convex 13 is a drum-shaped ring convex arranged on the outer circumferential surface of the end of the circular shaft 12, and the corresponding positioning groove 24 is a drum-shaped ring groove arranged on the inner circumferential surface of the mounting hole, i.e. the circular hole 222, so that the positioning convex 13 and the positioning groove 24 in positioning fit can limit the installation height of the push rod end oriented into the mounting hole 22, and generally, after the push rod end is oriented into the mounting hole 22, the clamping groove 14 is exposed in the mounting groove 23 and is flush with the plane of the buckle 3, so that the buckle 3 is conveniently clamped, and the axial movement of the trigger 2 at the end of the push rod is limited after the buckle is clamped in place.

[0026] In this way, the trigger 2 installed in place can form positioning in three directions, so as to avoid loosening, skewing and breaking off between the trigger 2 and the end of the push rod, thereby improving the fixing strength and the pulling force, and being able to withstand high impact strength, that is, increasing the impact resistance, and having better structural reliability and longer service life.

[0027] The above is only a specific embodiment of the present application, and those skilled in the art should understand that any equivalent structural design of the embodiment should be included in the protection scope of the present application.

Claims

1. A trigger fixing structure comprising a push rod (1) and a trigger (2) mounted at the end of the push rod, characterized in that The rear side of the trigger is provided with a mounting hole (22), and the trigger is provided with a mounting slot (23) which is in lateral communication with the mounting hole; the end of the push rod is oriented to be mounted into the mounting hole (22) and restricts the rotation of the trigger (2) relative to the push rod (1); the mounting slot (23) is mounted with a buckle (3) which is clamped to the end of the push rod in the mounting hole (22) to restrict the trigger (2) from being separated.

2. A trigger securing structure according to claim 1, wherein The end of the push rod and the mounting hole (22) are respectively provided with a positioning convex (13) and a positioning slot (24) which are in positioning fit, and the positioning height of the end of the push rod oriented to be mounted into the mounting hole (22) is restricted by the positioning convex (13) and the positioning slot (24).

3. A trigger securing structure according to claim 2, wherein The positioning convex (13) is a drum-type ring convex which is circumferentially arranged on the outer circumferential surface of the end of the push rod, and the corresponding positioning slot (24) is a drum-type ring slot which is circumferentially arranged on the inner circumferential surface of the mounting hole (22).

4. The trigger securing structure of claim 2, wherein The end of the push rod is composed of a polygonal shaft (11) and a circular shaft (12), and the corresponding mounting hole (22) is composed of a polygonal hole (221) and a circular hole (222), and the circular shaft (12) and the circular hole (222) are respectively provided with a positioning convex (13) and a positioning slot (24) which are in positioning fit.

5. A trigger securing structure according to claim 4, wherein The polygonal shaft (11) is fitted into the polygonal hole (221), thereby forming the oriented mounting of the end of the push rod into the mounting hole (22).

6. The trigger securement structure of claim 4, wherein The outer circumferential surface of the circular shaft (12) is provided with a circumferentially-arranged clamping slot (14), and the buckle (3) is clamped into the clamping slot (14).

7. A trigger securing structure according to claim 6, wherein The end of the push rod is oriented to be mounted into the mounting hole (22), and the clamping slot (14) is exposed in the mounting slot (23) and is flush with the plane of the buckle (3).

8. The trigger securement structure of claim 1, wherein The mounting slot (23) is formed by the two side surfaces of the trigger (2) and is in lateral communication with the mounting hole (22).

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