Multipurpose housings for hand tools

Abstract

A disclosed multipurpose bearing pedestal applied to a hand-held tool comprises a support which is provided with a main through hole, and the support is provided with a positioning body at the outer side of the main through hole, and also is provided with an auxiliary through hole at the outer side of the main through hole; the support is in the shape of a flat plate, and the support, the main through hole and the auxiliary through hole are formed through one-time coining; the main through hole and the auxiliary through hole are respectively provided with a main seat body and an auxiliary seat body through injection molding, and the main seat body and the auxiliary seat body are respectively provided with a main installation hole and an auxiliary installation hole; and the internal side walls of the main through hole and the auxiliary through hole both form multiple support bodies by extending to the corresponding center directions, the extension outer end faces of the multiple support bodies on the main through hole are disposed at the internal circumferential surface of the main installation hole, and the extension outer end faces of the multiple support bodies on the auxiliary through hole are disposed at the internal circumferential surface of the auxiliary installation hole. The beneficial effects comprise that the multipurpose bearing pedestal is simple in structure, convenient to manufacture, high in finished-product qualified rate and low in manufacture cost, and is not deformed because of raising of temperature during usage, thereby guaranteeing the transmission precision of a transmission mechanism, reducing transmission sound and prolonging the service life of a transmission member.

Description

technical field

[0001] The invention relates to a bearing seat, in particular to a multi-purpose bearing seat for hand tools. Background technique

[0002] The electric hammer is an electric hand-held tool integrating hammer, chisel and drill. The gear shifting mechanism is used to toggle the transmission switching device to change the meshing relationship between multiple gear sets in the transmission mechanism so as to realize the multiple functions of the electric hammer. conversion between each other. A plurality of transmission shafts arranged in parallel is a necessary condition for the change of the meshing relationship between multiple gear sets. In order to simplify the structural arrangement of the transmission mechanism, the multi-purpose bearing housing in the prior art is usually cast into a connected bracket and Multiple bearing housings. Due to the large thickness difference between the bracket and the bearing seat, the multi-purpose bearing seat makes it wa...

Examples

Embodiment

[0023] Example: such as Figure 1 to Figure 4 As shown, a multi-purpose bearing seat for hand-held tools includes a bracket 1, a main through hole 2 is provided on the bracket 1, and the bracket 1 is also provided on the outside of the main through hole 2 to communicate with the main through hole 2 through a communication groove 4. There are two secondary through holes 3, the outer edge of the bracket 1 is provided with three guide grooves 5 matching the three guide ribs of the hand tool, and the inner side wall of the main through hole 2 extends in the direction of the three guide grooves 5 respectively. Groove 6, the extension end of the bar-shaped groove 6 is located near the guide groove 5, and the inner side walls of the main through hole 2 and the two auxiliary through holes 3 respectively extend a plurality of support bodies 7 toward the center direction, and the injection molding machine will wear high The strength material forms the main seat body 8 on the main throug...

technical field

[0001] The invention relates to a bearing seat, in particular to a multi-purpose bearing seat for hand tools. Background technique

[0002] The electric hammer is an electric hand-held tool integrating hammer, chisel and drill. The gear shifting mechanism is used to toggle the transmission switching device to change the meshing relationship between multiple gear sets in the transmission mechanism so as to realize the multiple functions of the electric hammer. conversion between each other. A plurality of transmission shafts arranged in parallel is a necessary condition for the change of the meshing relationship between multiple gear sets. In order to simplify the structural arrangement of the transmission mechanism, the multi-purpose bearing housing in the prior art is usually cast into a connected bracket and Multiple bearing housings. Due to the large thickness difference between the bracket and the bearing seat, the multi-purpose bearing seat makes it wa...

Examples

Embodiment

[0023] Example: such as Figure 1 to Figure 4 As shown, a multi-purpose bearing seat for hand-held tools includes a bracket 1, a main through hole 2 is provided on the bracket 1, and the bracket 1 is also provided on the outside of the main through hole 2 to communicate with the main through hole 2 through a communication groove 4. There are two secondary through holes 3, the outer edge of the bracket 1 is provided with three guide grooves 5 matching the three guide ribs of the hand tool, and the inner side wall of the main through hole 2 extends in the direction of the three guide grooves 5 respectively. Groove 6, the extension end of the bar-shaped groove 6 is located near the guide groove 5, and the inner side walls of the main through hole 2 and the two auxiliary through holes 3 respectively extend a plurality of support bodies 7 toward the center direction, and the injection molding machine will wear high The strength material forms the main seat body 8 on the main throug...

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