TWI806433B - Electric ratchet wrench - Google Patents

Abstract

The present disclosure provides an electric ratchet wrench including a wrench main shell, a motor, a ratchet shell and a motor securing member. The wrench main shell includes two main shell screwed portions, and the two main shell screwed portions are symmetrically aligned at one end of the wrench main shell. The motor is received in the wrench main shell. The ratchet shell includes an inserting portion, and the inserting portion is inserted into the end of the wrench main shell. The motor securing member is disposed at the wrench main shell and located between the inserting portion and the motor. The motor securing member is configured for the motor to be secured thereon, and the motor securing member is abutted between an edge of the inserting portion and the main shell screwed portions. Therefore, the effect of lowering the structural complexity and improving the assembly easiness can be achieved.

Description

electric ratchet wrench

The present invention relates to a hand tool structure, and in particular to an electric ratchet wrench.

The advancement of technology has led to the development of electric hand tools to improve the convenience of construction. The conventional electric ratchet wrench includes a ratchet head housing and a wrench main housing. The ratchet head housing is locked to a connecting nut by its external thread, and then screwed to the main wrench housing through the connecting nut. The structure is complex and costly. higher.

In view of this, how to improve the structure of the electric ratchet wrench so as to reduce the complexity of its structure and improve the ease of assembly has become the goal of relevant industry players.

In order to solve the above problems, the present invention provides an electric ratchet wrench, which can reduce the structural complexity and improve the ease of assembly through its structural configuration.

According to one embodiment of the present invention, an electric ratchet wrench is provided, which includes a wrench main casing, a motor, a ratchet head casing, and a motor fixing member. The wrench main housing includes two main housing locking parts, the aforementioned two main housing locking parts are symmetrically arranged at one end of the wrench main housing, the motor is accommodated in the wrench main housing, and the ratchet head housing includes a plug-in part. The socket part is inserted into the aforementioned one end of the main casing of the wrench. The motor fixing part is accommodated in the main casing of the wrench and is located between the socket part and the motor. The motor fixing part is used to fix the motor, and the motor fixing part is clamped against one end edge of the socket part and the locking part of the main casing. between.

In this way, through the structural configuration in which the ratchet head housing is inserted into the wrench main housing and the motor fixing part is clamped against the position, the beneficial effects of reducing structural complexity and improving ease of assembly can be achieved.

According to the aforementioned embodiment of the electric ratchet wrench, wherein the wrench main housing may further include a first fitting portion, the first fitting portion is located at the aforementioned one end, and the ratchet head housing further includes a second fitting portion, the second fitting portion The engaging portion is located at the inserting portion and is correspondingly engaged with the first engaging portion.

According to the aforementioned embodiment of the electric ratchet wrench, wherein the wrench main housing may further include two alignment grooves, the aforementioned two alignment grooves are symmetrically arranged at the aforementioned one end of the wrench main housing, and the ratchet head housing further includes two alignment protrusions, Each alignment protrusion is located on the socket part and is used to cooperate with each alignment groove.

According to the electric ratchet wrench of the aforementioned embodiment, the wrench main casing may further include a first shell portion and a second shell portion, and the first shell portion and the second shell portion are assembled to form a tubular accommodating space for accommodating In the motor, the first fitting part includes four snapping protrusions protruding radially inward, two of which are located on the first shell part, and the other two snapping protrusions are located on the second shell part, and the pair of positioning grooves are located on the first shell part and Located between the aforementioned two locking protrusions, the other alignment groove is located in the second shell part and between the aforementioned other two locking protrusions, the second fitting part includes two grooves, and the aforementioned two alignment protrusions are respectively located in the aforementioned two grooves Between, and the extension direction of each alignment protrusion is parallel to the axial direction of the motor.

According to the electric ratchet wrench of the aforementioned embodiment, the motor fixing part may include a plate part, a lower ring part and two clamped parts. The plate portion includes an opening, the lower ring portion is connected to the lower surface of the plate portion and includes a through hole, and the through hole communicates with the opening to form an axis space. The aforementioned two clamped portions radially extend from the lower ring portion and are connected to the lower surface of the plate portion. Each clamped portion includes a concave arc, and the shape of each concave arc corresponds to each locking portion of the main housing.

According to the electric ratchet wrench of the above-mentioned embodiment, wherein, the motor fixing part may further include two motor screw lock parts, which extend radially from the lower ring part and connect the lower surface of the plate part, each motor screw lock part and each clamped part Clamp 90 degrees, and each motor screw lock part is fixed with the motor screw lock.

According to the aforementioned embodiment, the electric ratchet wrench may further include a transmission mechanism, the transmission mechanism is located in the ratchet head housing and includes a ring gear and a connecting shaft. The ring gear is supported by the plate portion, and the connecting shaft is located in the ring gear and protrudes toward the shaft center space and is connected to a motor shaft of the motor. Wherein, the motor fixing part further includes a positioning ring protrusion protruding from an upper surface of the plate portion for positioning the ring gear.

According to the electric ratchet wrench of the aforementioned embodiment, wherein, the motor fixing part may further include two positioning projections, each positioning projection extends radially inward from an inner wall of the positioning ring projection, and the ring gear includes two positioning recesses located on the ring gear At the lower end, each positioning recess is used for each positioning protrusion to be embedded.

According to the electric ratchet wrench of the above-mentioned embodiment, the ratchet head housing and the ring gear can butt against each other.

According to the aforementioned embodiment of the electric ratchet wrench, wherein the ratchet head housing may further include two abutment protrusions, the ring gear further includes two abutment recesses located on the upper end of the ring gear, and each abutment recess fits with each abutment protrusion.

According to the aforementioned embodiment, the electric ratchet wrench may further include a ratchet mechanism, which is located in the ratchet head housing and driven by the transmission mechanism.

Embodiments of the present invention will be described below with reference to the drawings. For the sake of clarity, many practical details are included in the following narrative. However, the reader should understand that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some well-known and commonly used structures and elements will be shown in a simple and schematic manner in the drawings; and repeated elements may be represented by the same or similar numbers.

In addition, terms such as first, second, and third in this article are only used to describe different elements or components, and there is no limitation on the elements/components themselves. Therefore, the first element/component can also be renamed as the second element/component . And the combination of components/components/mechanisms/modules in this article is not a combination that is generally known, conventional or conventional in this field, and whether the component/components/mechanism/module itself is known or not can not be used to determine whether the combination relationship is Easily accomplished by persons of ordinary knowledge in the technical field.

Please refer to Figures 1 and 2, wherein Figure 1 shows a perspective view of an electric ratchet wrench 100 according to an embodiment of the present invention, and Figure 2 shows an exploded view of the electric ratchet wrench 100 according to the embodiment of Figure 1 . The electric ratchet wrench 100 includes a wrench main casing 110 , a motor 120 , a ratchet head casing 130 and a motor fixing member 140 . The wrench main housing 110 includes two main housing locking parts 112, the aforementioned two main housing locking parts 112 are symmetrically arranged at one end of the wrench main housing 110, the motor 120 is accommodated in the wrench main housing 110, and the ratchet head housing 130 includes an insertion portion 131 , and the insertion portion 131 is inserted into the aforementioned end of the wrench main housing 110 . The motor fixing part 140 is accommodated in the wrench main housing 110 and is located between the socket part 131 and the motor 120. The motor fixing part 140 is used to fix the motor 120, and the motor fixing part 140 is clamped against one end of the socket part 131. Edge and the locking part 112 of the main casing.

In this way, through the structural configuration in which the ratchet head housing 130 is inserted into the wrench main housing 110 and the motor fixing member 140 is clipped to a limit, the advantageous effects of reducing the structural complexity of the electric ratchet wrench 100 and improving the ease of assembly can be achieved. Details of the electric ratchet wrench 100 will be described later.

The wrench main housing 110 includes a first shell part 114 and a second shell part 115. After the first shell part 114 and the second shell part 115 are assembled, a tubular accommodation space can be formed for accommodating components such as the motor 120. Each main The housing locking part 112 can be divided into two parts and located at the first housing part 114 and the second housing part 115 respectively. The second shell part 115 is locked and connected.

The wrench main housing 110 may further include a first fitting portion 111, the first fitting portion 111 is located at the aforementioned one end, and the ratchet head housing 130 may further include a second fitting portion 132, the second fitting portion 132 is located at the insertion The connecting portion 131 can be correspondingly fitted to the first fitting portion 111 . Specifically, the first fitting portion 111 is located above the locking portion 112 of the main housing, and the first fitting portion 111 may include four locking protrusions protruding radially inward, of which two locking protrusions are located on the first shell portion 114 , and the other two locking protrusions are located on the second shell part 115 .

The electric ratchet wrench 100 may further include a ratchet mechanism 160 located in the ratchet head housing 130 . Specifically, the ratchet head housing 130 may include a ratchet receiving portion 134 and an inserting portion 131 , the ratchet receiving portion 134 extends from the inserting portion 131 along the axial direction of the motor 120 toward a direction away from the wrench main housing 110 , and the ratchet The receiving portion 134 is provided for the ratchet mechanism 160 and exposes a driving end 161 of the ratchet mechanism 160 for operation. The second interlocking portion 132 includes two grooves, and one groove can correspond to two locking protrusions. Therefore, when the insertion portion 131 of the ratchet head housing 130 is located at the aforementioned end of the wrench main housing 110 , each groove can accommodate each locking protrusion to limit the ratchet head housing 130 to the wrench main housing 110 . It should be particularly noted here that the ratchet mechanism 160 is known and not the focus of improvement of the present invention, and will not be described in detail here.

Moreover, the wrench main housing 110 may further include two alignment grooves 113, the aforementioned two alignment grooves 113 are symmetrically arranged at the aforementioned one end of the wrench main housing 110, and the ratchet head housing 130 further includes two alignment protrusions 133, each alignment The protrusions 133 are located on the insertion portion 131 and are used to match the alignment grooves 113 . One of the alignment grooves 113 can be located in the first shell part 114 and between the two aforementioned protrusions, and the other alignment groove 113 can be located in the second shell part 115 and between the other two protrusions. 133 are respectively located between the two grooves, and the extension direction of each alignment protrusion 133 is parallel to the axial direction of the motor 120, so that the ratchet head housing 130 can be limited in the axial and radial directions, and the stability of the structural connection can be improved. sex. Further, the inserting portion 131 of the ratchet head housing 130 may include radial screw holes to cooperate with the wrench main housing 110 for screw locking, but the present invention is not limited thereto.

Please refer to Fig. 3, Fig. 4 and Fig. 5, and refer to Fig. 1 to Fig. 2 together, wherein Fig. 3 shows a three-dimensional view of the motor fixing part 140 of the electric ratchet wrench 100 of the embodiment in Fig. 1 Schematic diagrams, FIG. 4 shows another perspective view of the motor fixing member 140 of the electric ratchet wrench 100 of the embodiment in FIG. 1 , and FIG. 5 shows a partial cross-sectional schematic diagram of the electric ratchet wrench 100 of the embodiment in FIG. 1 . The motor fixing member 140 may include a plate portion 141 , a lower ring portion 142 and two clamped portions 143 . The plate portion 141 includes an opening 1411 , the lower ring portion 142 is connected to the lower surface of the plate portion 141 and includes a through hole 1421 , and the through hole 1421 communicates with the opening 1411 to form an axis space S1 . The aforementioned two clamped portions 143 radially extend from the lower ring portion 142 and are connected to the lower surface of the plate portion 141. Each clamped portion 143 includes a concave arc 1431, and the shape of each concave arc 1431 corresponds to each locking portion of the main housing. 112. The motor fixing part 140 may further include two motor screw lock parts 147, which extend radially from the lower ring part 142 and connect the lower surface of the plate part 141, each motor screw lock part 147 and each clamped part 143 are clamped at 90 degrees, and Each motor screw lock portion 147 is screw-locked and fixed to the motor 120 .

In detail, the plate part 141 has a disc structure, and the lower ring part 142 has a ring structure, and the two motor screw lock parts 147 and the two clamped parts 143 are arranged in a cross shape around the lower ring part 142, and each is clamped The portion 143 has a notch forming a concave arc 1431 . Each motor screw lock part 147 includes a screw hole axially penetrating to the plate part 141, and the motor 120 may also include a corresponding screw hole, so that the screw can be locked into the motor 120 from the plate part 141 through each motor screw lock part 147 , to fix the motor 120 on the motor fixing member 140 . Further, the motor screw lock portion 147 may include radial screw holes to cooperate with the wrench main housing 110 for screw lock, but this does not limit the present invention.

As shown in FIGS. 2 to 5 , the electric ratchet wrench 100 may further include a transmission mechanism 150 . The transmission mechanism 150 is located in the ratchet head housing 130 and includes a ring gear 151 and a connecting shaft 152 . The ring gear 151 abuts against the top plate 141 . The connecting shaft 152 is located in the ring gear 151 and protrudes toward the shaft center space S1 to connect to a motor shaft 121 of the motor 120 . The ratchet mechanism 160 can be driven by the transmission mechanism 150 . The motor fixing member 140 further includes a positioning ring protrusion 144 protruding from an upper surface of the plate portion 141 for positioning the ring gear 151 . In addition, the motor fixing member 140 may further include two positioning protrusions 145, each positioning protrusion 145 extends radially inward from an inner wall of the positioning ring protrusion 144, the ring gear 151 includes two positioning recesses 1511 located at the lower end of the ring gear 151, Each positioning recess 1511 is used for each positioning protrusion 145 to be embedded.

Specifically, the transmission mechanism 150 is a transmission shaft 162 located in the insertion portion 131 and connected to the ratchet mechanism 160. The transmission mechanism 150 may further include planetary gears. Through the connection shaft 152, the planetary gears and the ring gear 151, the motor 120 The power is transmitted to the ratchet mechanism 160.

The positioning ring protrusion 144 extends upward from the plate portion 141, and the motor fixing member 140 may further include a boss 146 located on the plate portion 141, so that a relative ring groove is formed between the boss 146 and the positioning ring protrusion 144, and the positioning protrusion Block 145 is located in this ring ditch. The ring gear 151 has an annular structure. When the ring gear 151 is positioned in the ring groove, the positioning concave portion 1511 can be positioned with the positioning protrusion 145 , which is more helpful to improve the stability of the structure.

In addition to positioning the ring gear 151 against the motor fixing member 140 , the ratchet head housing 130 and the ring gear 151 may also abut against each other. Wherein, the ratchet head housing 130 may further include two abutment protrusions 135, and the two abutment protrusions 135 are located inside the ratchet head housing 130, and the ring gear 151 further includes two abutment recesses 1512 located at the upper end of the ring gear 151, each abutment The top concave portion 1512 cooperates with each abutting convex portion 135 , so that the ring gear 151 can abut against the motor fixing member 140 and the ratchet head housing 130 .

Therefore, when assembling, the connecting shaft 152 of the motor 120, the motor fixing part 140 and the transmission mechanism 150 is assembled first, and the ratchet head housing 130 is first assembled with the ratchet mechanism 160, and then the transmission mechanism 150, the motor 120, the motor The fixing part 140, the ratchet head housing 130 and the ratchet mechanism 160 are positioned as a whole and put into the wrench main housing 110. At this time, through the cooperation of the first fitting part 111 and the second fitting part 132, and the motor fixing part 140 is clamped by the inserting part 131 and the locking part 112 of the main housing so that all components can be temporarily positioned, so as long as the second shell part 115 is locked with the first shell part 114 again, and the Lock the screws to complete the assembly. In this way, the motor fixing member 140 can serve as a link between the past and the future, that is, the motor fixing member 140 can be positioned with the transmission mechanism 150 and the motor 120, and has axial and radial positioning functions, so as to achieve the beneficial effect of simplifying the structure.

Although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Anyone skilled in this art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be defined by the appended patent application scope.

100: electric ratchet wrench 110: Wrench main housing 111: The first fitting part 112: Main housing locking part 113: Alignment groove 114: First Shell 115: second shell 120: motor 121: Motor shaft 130: ratchet head housing 131: socket part 132: the second fitting part 133: Alignment Convex 134: Ratchet receiving part 135: against the convex part 140:Motor fixing piece 141: Board 1411: opening 142: lower ring part 1421: perforation 143: Clamped part 1431: concave arc 144: positioning ring convex 145: positioning bump 146:Boss 147:Motor screw lock 150: transmission mechanism 151: ring gear 1511: positioning recess 1512: Resist the concave part 152: connecting shaft 160: ratchet mechanism 161: drive end 162: drive shaft S1: axis space

FIG. 1 shows a perspective view of an electric ratchet wrench according to an embodiment of the present invention; Figure 2 shows an exploded view of the electric ratchet wrench of the embodiment in Figure 1; Fig. 3 shows a three-dimensional schematic view of the motor fixing part of the electric ratchet wrench of the embodiment in Fig. 1; Fig. 4 shows another perspective view of the motor fixing part of the electric ratchet wrench of the embodiment in Fig. 1; and Fig. 5 shows a partial cross-sectional schematic diagram of the electric ratchet wrench of the embodiment in Fig. 1 .

100: electric ratchet wrench

111: The first fitting part

112: Main housing locking part

113: Alignment groove

114: First Shell

115: second shell

120: motor

121: Motor shaft

130: ratchet head housing

131: socket part

132: the second fitting part

133: Alignment Convex

134: Ratchet receiving part

135: against the convex part

140:Motor fixing piece

150: transmission mechanism

151: ring gear

1511: positioning recess

1512: Resist the concave part

160: ratchet mechanism

161: drive end

162: drive shaft

Claims (10)

An electric ratchet wrench, comprising: a wrench main casing, including: two main casing locking parts arranged symmetrically at one end of the wrench main casing; a motor accommodated in the wrench main casing; a ratchet head casing body, including a socket part inserted into the end of the wrench main housing; The fixing part is used to fix the motor, and the motor fixing part is clamped and limited between an end edge of the inserting part and the locking part of the main casing. The motor fixing part includes: a plate part including an opening; The lower ring portion is connected to the lower surface of the plate portion and includes a through hole, and the through hole communicates with the opening to form an axial center space; and two clamped portions extend radially from the lower ring portion and connect to the plate portion On the lower surface, each of the clamped portions includes a concave arc, and the shape of each of the concave arcs corresponds to each of the locking portions of the main housing. The electric ratchet wrench according to claim 1, wherein, the main housing of the wrench further includes a first fitting portion, the first fitting portion is located at the end, and the ratchet head housing further includes a second fitting portion , the second fitting portion is located at the insertion portion and correspondingly fits into the first fitting portion. The electric ratchet wrench as described in claim 2, wherein, the The wrench main housing further includes two alignment grooves, and the two alignment grooves are symmetrically arranged at the end of the wrench main housing. The ratchet head housing further includes two alignment protrusions, and each alignment protrusion is located at the insertion part And used to match the alignment grooves. The electric ratchet wrench according to claim 3, wherein, the main casing of the wrench further includes a first casing part and a second casing part, and the first casing part and the second casing part are assembled to form a tubular container A space is provided for accommodating the motor, and the first fitting portion includes four protrusions protruding radially inward, two of which are located on the first shell portion, and the other two are located on the second shell portion, wherein One of the alignment grooves is located on the first shell part and between the two locking protrusions, the other alignment groove is located on the second shell part and is located between the other two locking protrusions, and the second fitting part includes There are two grooves, and the two alignment protrusions are respectively located between the two grooves, and the extension direction of each alignment protrusion is parallel to the axial direction of the motor. The electric ratchet wrench according to claim 1, wherein the motor fixing part further includes: two motor screw lock parts radially extending from the lower ring part and connected to the lower surface of the plate part, each of the motor screw lock parts It is clamped at 90 degrees with each of the clamped parts, and each of the motor screw lock parts is fixed with the motor screw lock. The electric ratchet wrench as described in claim 5 further includes a transmission mechanism, which is located in the ratchet head housing and includes: a ring gear, which is supported by the plate; and a connecting shaft, which is located in the ring gear and Convex towards this axis space and connect A motor shaft of the motor; wherein, the motor fixing part further includes a positioning ring protrusion protruding from an upper surface of the plate portion for positioning the ring gear. The electric ratchet wrench as described in claim 6, wherein the motor fixing member further includes two positioning projections, each of which extends radially inward from an inner wall of the positioning ring projection, and the ring gear includes two positioning projections. The concave portion is located at the lower end of the ring gear, and each positioning concave portion is used for embedding each positioning protrusion. The electric ratchet wrench according to claim 7, wherein the ratchet head housing and the ring gear are against each other. The electric ratchet wrench as described in Claim 8, wherein, the ratchet head housing further includes two abutment protrusions, and the ring gear further includes two abutment recesses located at the upper end of the ring gear, each of the abutment recesses cooperates with each against the convex portion. The electric ratchet wrench as described in Claim 6 further includes: a ratchet mechanism located in the ratchet head housing and driven by the transmission mechanism.

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