Outer tool rest locking device of reciprocating type tool bit

Abstract

According to the scheme, the outer tool rest locking device of the reciprocating type tool bit is provided, the reciprocating type tool bit comprises an outer tool rest with a containing groove, an outer tool installed on the outer tool rest and an inner tool assembly which is arranged in the containing groove of the outer tool rest and driven by a driving piece to move in a reciprocating mode, and the portion, at the lower bottom of the outer tool rest, of the containing groove is in an opening shape. A plurality of lock catch devices are arranged on the opening, are symmetrically distributed on the left side and the right side of the driving piece and are far away from the driving piece, and comprise lock catch pieces for at least partially closing the opening of the accommodating groove in the lower bottom of the outer knife rest; and the lock catch piece is movably connected with the two transverse walls at the lower bottom of the outer knife rest through a clasp groove matching structure. After the lock catch piece is buckled with the outer tool rest, the buckling part is flat and invisible, a better space utilization rate is provided for a whole machine, and coordinated operation between tool bit units is guaranteed. The lock catch piece provides stable support for the transverse wall of the outer knife rest. The lock catch piece and the outer knife rest are of a split connecting structure, and assembling, maintaining, replacing and cleaning are convenient.

Description

Technical Field

[0001] The utility model relates to a reciprocating razor blade head, in particular to a fixed connection mechanism for an outer blade holder of a reciprocating razor blade head. Background Art

[0002] Personal care products, such as shaving devices, include a blade head and a handle. The cutting operation is achieved by the relative movement of the inner and outer blades in the blade head. The inner and outer blades are respectively installed on their own blade holders. Generally, the inner blade holder for the inner blade is installed in the accommodation groove of the outer blade holder, and the fixation of the inner core of the blade head in the outer housing is realized through the connection between the outer blade holder and the outer housing of the blade head. However, for the inner core of the blade head, the positional relationship between the inner and outer blade holders is very crucial. Existing razors, especially reciprocating razors, generally install the components of the inner core of the blade head one by one directly in the outer housing, that is, fix and assemble them one by one from bottom to top. There are various directions and different connection relationships between the components, making maintenance and cleaning very troublesome. The unitary blade head core is only used in rotary razors. In reciprocating razors, the unitary structure will bring factors such as cumbersome components, complex connections, insufficient space, high noise, and insufficient stability and balance, so it is often not adopted. Summary of the Invention

[0003] The utility model provides a lock device for an outer blade holder of a reciprocating blade head with a simple structure, firm connection, convenient processing and assembly, and overall beauty.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions: A lock device for an outer blade holder of a reciprocating blade head. The reciprocating blade head includes an outer blade holder with an accommodation groove, an outer blade installed on the outer blade holder, and an inner blade assembly placed in the accommodation groove of the outer blade holder and driven to reciprocate by a driving member. The accommodation groove is open at the bottom of the outer blade holder, and a plurality of lock devices are provided at the opening. The plurality of lock devices are symmetrically distributed on both sides of the driving member and far away from the driving member. The lock device includes a lock member for at least partially closing the opening of the accommodation groove at the bottom of the outer blade holder. The lock member is movably connected to two transverse walls through a hook groove matching structure at the bottom of the outer blade holder.

[0005] As an improvement: The lock member includes a base surface, and two upwardly curved wings are formed by bending upward from the front and rear edges of the base surface. First matching members with a hook groove matching structure are respectively arranged on the two upwardly curved wings. The width of the base surface is adapted to the width of the accommodation groove. Embedding grooves for the upwardly curved wings to be embedded and matched are opened at the lower parts of the inner / outer walls of the two transverse walls of the outer blade holder, and second matching members with a hook groove matching structure are integrally arranged in the embedding grooves. The first matching member and the second matching member are hooked and matched to form a hook groove matching structure, so as to realize the limit connection between the lock member and the outer blade holder.

[0006] As an improvement: the first fitting or the second fitting is a protruding hook member, and the upper end of the hook member is hooked back to form a claw portion, and the claw portion is clamped by a buckle groove that cooperates with the hook member, so as to realize the anti-disengagement of the buckle groove fitting structure.

[0007] As an improvement: the locking member further includes at least one elastic rib formed by bending upward from the left / right side edge of the base surface, and the free end of the elastic rib presses against the left / right inner wall of the receiving groove.

[0008] As an improvement: the locking member further includes a top rib formed by bending upward from the left / right side edge of the base surface for sleeving a pre-tightening spring, and the upper end of the warning spring presses against the inner knife assembly.

[0009] As an improvement: the locking member further includes a top rib formed by bending upward from the left / right side edge of the base surface for sleeving a pre-tightening spring, and the upper end of the warning spring presses against the inner knife assembly, and the free end of the top rib is far from the free end of the elastic rib.

[0010] As an improvement: the locking member further includes a supporting edge formed by bending upward from the left / right side edge of the base surface and having the same inner width as the two transverse walls of the outer tool rest.

[0011] The beneficial effects provided by the present invention are: the bottom of the receiving groove can be at least partially closed by the locking device to form a unitary cutter head inner core, and the completed cutter head inner core can be directly assembled into the cutter head housing as a whole. Since the buckle groove fitting structure on the outer tool rest is located in the embedding groove, after the locking member is buckled with the outer tool rest, the buckling part is flat and invisible, which is beneficial to subsequent unit combination assembly, i.e., the whole machine modular assembly, provides better space utilization for the whole machine, and ensures the coordinated operation between cutter head units. The locking member provides a stable support for the transverse wall of the outer tool rest. The locking member and the outer tool rest are of a split connection structure, which is convenient for assembly, maintenance, replacement and cleaning.

[0012] The present invention will be further described in detail below with reference to the drawings and embodiments. Brief Description of the Drawings

[0013] Figure 1 is a schematic view of the overall structure of an embodiment of the outer tool rest locking device of the reciprocating cutter head provided by the present invention.

[0014] Figure 2 is Figure 1 the exploded structure diagram of.

[0015] Figure 3 is a schematic view of the structure of the locking member. Detailed Description of the Embodiment

[0016] Such as Figure 1 、 Figure 2 、 Figure 3As shown in the figure, an embodiment of the outer tool holder locking device of the reciprocating tool head of the present utility model is described. The reciprocating tool head includes an outer tool holder 1 with a receiving groove 11, an outer tool 2 installed on the outer tool holder 1, and an inner tool assembly placed in the receiving groove 11 of the outer tool holder 1 and driven to reciprocate by a driving member. The inner tool assembly includes an inner tool holder 8 driven to reciprocate by the driving member and an inner tool 7 installed on the inner tool holder 8 and cooperating with the outer tool to form a cutting operation. The receiving groove 11 of the outer tool holder 1 is open at the bottom of the outer tool holder 1. In this embodiment, two locking devices are provided at this opening. Of course, it can also be set with multiple pairs of locking devices. A plurality of locking devices are symmetrically distributed on both sides of the driving member and away from the driving member, so as not to affect the movement of the driving member. The locking device of this example is realized by using a locking member 5 that partially closes the receiving groove 11 at the opening of the bottom of the outer tool holder 1. The locking member 5 is movably connected to the two transverse walls through a hook groove matching structure at the bottom of the outer tool holder 1.

[0017] To ensure stable locking connection, the locking member 5 of this embodiment includes a base surface 51, two upwardly bent upper winglets 52 formed by bending upward from the front and rear edges of the base surface 51, at least one elastic rib 53 formed by bending upward from one side edge of the base surface 51, a top rib 54 for sleeving and pre-tightening a spring, and a support edge 55 formed by bending upward from the other side edge of the base surface 51 and having the same inner width as the two transverse walls of the outer tool holder 1.

[0018] The first fitting 57 with a hook groove matching structure is respectively arranged on the two upper winglets. The width of the base surface 51 is adapted to the width of the receiving groove. In this embodiment, the lower parts of the outer walls of the two transverse walls of the outer tool holder 1 are provided with embedding grooves 12 for the upper winglets to be embedded and matched. Of course, the embedding grooves 12 can also be opened on the inner walls of the transverse walls. Considering the influence on the inner tool assembly when the embedding grooves 12 are opened on the inner walls of the transverse walls, it is more reasonable to open them on the outer walls. Moreover, the outer wrapping and buckling type of the locking member can prevent the outer collapse of the transverse walls. This embodiment combines the anti-inward collapse support of the support edge 55, so that the two transverse walls and even the outer tool holder do not deform during assembly, and even do not deform during long-term use, greatly extending the service life. The second fitting with a hook groove matching structure is integrally arranged in the embedding groove 12. In this embodiment, the first fitting is a buckle groove, and the second fitting is a protruding hook member. The first fitting and the second fitting are hooked and matched to form a hook groove matching structure, realizing the limit connection between the locking member and the outer tool holder. The upper end of the hook member is hooked back to form a claw part, and the claw part is fixed by the buckle groove cooperating with the hook member, thereby realizing the anti-disengagement of the hook groove matching structure. Of course, the scheme with the first fitting being a hook member and the second fitting being a buckle groove can also be adopted.

[0019] On the left / right side of the base surface 51 of the locking fastener 5, two elastic edge stoppers 53 are formed by bending upwards, and a top edge 54 is arranged in the middle therebetween. The free end of the top edge 54 is far from the free end of the elastic edge stopper 53. The free end of the elastic edge stopper 53 presses against the left / right inner wall of the receiving groove. The elastic edge stopper 53 can not only ensure the limit connection of the locking fastener in the transverse direction, but also play a shock-absorbing role and improve the hand feeling. The top edge 54 is used for sleeving a pre-tightening spring 6, and the upper end of the warning spring presses against the inner tool holder of the inner tool assembly. A lower convex column for positioning the abutting end of the pre-tightening spring 6 is arranged on the inner tool holder 4 corresponding to the position where the pre-tightening spring 6 abuts. The locking fastener 5 not only plays a role in locking, but also plays a connecting role. The locking fastener 5 supports the pre-tightening spring 6 to form a tensioning force, and pushes the inner tool holder 4, so that the inner tool above the inner tool holder reliably abuts against the lower surface of the outer tool 2, and the cutting is cleaner and more efficient, greatly improving the efficiency and feel.

[0020] On the left / right other side of the base surface 51 of the locking fastener 5, a support edge 55 with the same inner width as the two transverse walls of the outer tool holder 1 is formed by bending upwards. The support edge 55 is configured to enter the receiving groove, that is, the support edge 55 supports between the two transverse walls, which can effectively ensure the distance between the two transverse walls, that is, ensure the width of the receiving groove, and prevent the two transverse walls from caving in.

[0021] Although the present utility model has been disclosed above with specific embodiments, it is not intended to limit the present utility model. Any person skilled in the art can still make some changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the scope of the appended claims.

Claims

1. An outer tool holder locking device for a reciprocating cutter head. The reciprocating cutter head includes an outer tool holder (1) with a receiving groove (11), an outer tool (2) mounted on the outer tool holder (1), and an inner tool assembly that is driven to reciprocate by a driving member and is placed in the receiving groove (11) of the outer tool holder (1). It is characterized in that: The described accommodation groove (11) is open at the bottom of the outer tool rest (1). A number of locking devices are provided on this opening. The number of locking devices is symmetrically distributed on both sides of the driving member and far away from the driving member. The locking device includes a locking member (5) that at least partially closes the opening of the accommodation groove (11) at the bottom of the outer tool rest (1). The locking member (5) is movably connected to the two transverse walls of the outer tool rest (1) through a hook groove matching structure at the bottom of the outer tool rest (1).

2. The outer tool rest locking device of the reciprocating cutter head according to claim 1, characterized in that: The locking member (5) includes a base surface (51), and two upwardly bent wings (52) are formed by bending upward from the front and rear edges of the base surface (51). First fitting members of the hook groove matching structure are respectively arranged on the two upwardly bent wings. The width of the base surface (51) is adapted to the width of the accommodation groove. Embedding grooves (12) for the upwardly bent wings to be embedded and fitted are opened at the lower parts of the inner / outer walls of the two transverse walls of the outer tool rest (1). Second fitting members of the hook groove matching structure are integrally arranged in the embedding grooves (12). The first fitting member and the second fitting member are in hook groove matching to form a hook groove matching structure, realizing the limit connection between the locking member and the outer tool rest.

3. The outer tool rest locking device of the reciprocating cutter head according to claim 2, characterized in that: The first fitting member or the second fitting member is a protruding hook member. The upper end of the hook member is bent back to form a claw part. The claw part is fixed by clamping a buckle groove that cooperates with the hook member, thereby realizing the anti-disengagement of the hook groove matching structure.

4. The outer cutter head locking device of the reciprocating cutter head according to claim 2 or 3, characterized in that: The locking member (5) further includes at least one elastic edge stop (53) formed by bending upward from the left / right side edge of the base surface (51). The free end of the elastic edge stop (53) presses against the left / right inner wall of the accommodation groove.

5. The outer tool rest locking device of the reciprocating cutter head according to claim 2 or 3, characterized in that: The locking member (5) further includes a top edge (54) formed by bending upward from the left / right side edge of the base surface (51) for sleeving a pre-tightening spring. The upper top end of the warning spring presses against the inner tool assembly.

6. The outer cutter head locking device of the reciprocating cutter head according to claim 4, characterized in that: The locking member (5) further includes a top edge (54) formed by bending upward from the left / right side edge of the base surface (51) for sleeving a pre-tightening spring. The upper top end of the warning spring presses against the inner tool assembly. The free end of the top edge (54) is far away from the free end of the elastic edge stop (53).

7. The outer tool rest locking device of the reciprocating cutter head according to claim 2 or 3, characterized in that: The locking member (5) further includes a support edge (55) formed by bending upward from the left / right side edge of the base surface (51) and having the same inner width as the two transverse walls of the outer tool rest (1).

8. The outer tool rest locking device of the reciprocating cutter head according to claim 4, characterized in that: The locking member (5) further includes a support edge (55) formed by bending upward from the opposite side edge of the base surface (51) where the elastic edge stop (53) is located and having the same inner width as the two transverse walls of the outer tool rest (1).

9. The outer cutter head lock device of the reciprocating cutter head according to claim 5, characterized in that: The locking member (5) further includes a support edge (55) formed by bending upward from the left / right side edge of the base surface (51) and having the same inner width as the two transverse walls of the outer tool rest (1).

10. The outer cutter head locking device of the reciprocating cutter head according to claim 6, characterized in that: The locking member (5) further includes a support edge (55) formed by bending upward from the opposite side edge of the base surface (51) where the elastic edge stop (53) is located and having the same inner width as the two transverse walls of the outer tool rest (1).

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